Rubber belt conveyor works

Mainly by the two endpoints cylinders and closed on its sleeve belt components. Driven conveyor rollers rotating drum called a drive (drive roller); Another is to change only the direction of movement of the Telescopic belt conveyor drum called a bend pulley. Driven by a motor through reducer drive rollers, conveyor and plastic chain conveyor drive roller rely on friction between the drag. Usually the drive rollers are mounted at the discharge end, to increase traction conducive drag. Material from the feed end of the feed, the rotating conveyor fall, relying friction drive conveyor transported to the discharge end of unloading.

A belt conveyor is widely used in the coal industry

Conveyor coal industry widely used in a belt conveyor for conveying bulk, long distance in powder, granular, or finished mine conveyors  material delivery device. Widely in metallurgy, mining, coal, power plants, chemical plants, building materials, ports and other industries. According to the different transport processes can be check weigher  stand-alone, multi-level multi-machine Relay transport. Depending on the installation location can be arranged horizontally, tilted arrangement, plus tilt the level layout and other forms.

Belt conveyors in the present state of economic development situation

Conveyor belt under the state 's current economic development situation , opportunities and challenges , the need to constantly innovative technologies to meet the challenges ,

seize opportunities. As the state is expected to strengthen the railways, highways, airports , docks and city bucket elevators public investment in infrastructure and other projects , the

country

The market demand for construction machinery products will be improved . Although this year's production increase will be lower than last year, but the annual construction

machinery industry will maintain a moderate growth.

In recent years, the Turn conveyor country has continued to increase investment in agriculture , the development of agriculture in a country's stability is always a top priority . Development

of agricultural mechanization are moving in large-scale direction. Therefore, the development prospects of agricultural belt conveyor is quite impressive, it

For saving the rural labor resources, and improve labor productivity are of great strategic significance.

In industry , the application of the belt conveyor is widespread in all factories and enterprises in the assembly line , the conveyor belt is one of the essential transport

machinery and equipment . Belt conveyors in the use of industrial enterprises , for enterprises to expand production scale , improve labor productivity, savings

The cost of great significance.

Belt conveyor manufacturer's distribution is very much , so the competition is very intense , so the need to constantly improve themselves in order to win customer acceptance ,

thus long-term survival and development .

Food security equipment conveyor belt conveyor for conveying materials for

Conveyor belt conveyors transporting the material for direct contact with the material most direct site . For different operating environment, material properties, belt

conveyors need to install a different Elevator conveyor conveyor belt. Roller device is a conveyor belt, belt Cheng care unit , adjust the position of the roller

, Is an effective solution to avoid vertical conveyor the conveyor belt conveyor deviation of . Adjusting tensioning device can effectively improve the slippage phenomenon . In addition ,

cleaning equipment , fixtures feed conveyor can be cleared , effectively extending the service life of the conveyor belt .


   Regular and effective maintenance of the various components of the conveyor belt , you can extend the life of the conveyor to ensure its efficiency and reduce failure.

Principles of food security equipment and conveyor drive pulley friction coefficient

   The calculation results with different belt conveyor design may vary , the most critical parameter is the value of the running resistance coefficient and the coefficient of

friction . Changes in mine production Incline Belt conveyor system , change the belt conveyor running resistance coefficient and the coefficient of friction and other environmental conditions.

Therefore , the actual measurement

Results found in the data sheet Flat belt conveyor and field a considerable difference , which is calculated from the selected parameters of any conventional large result .
    The power of hypothesis-driven traction rollers , to overcome all the running resistance , the ideal tape friction drive mechanism , friction and heat is not considered to

bring about the change .
    Principles running drag coefficient : belt conveyor is running, the motor load input power and input current measurement . A single motor drives the belt conveyor load

operation , electrical power measurements , calculated shaft power ( eg motor efficiency can be measured , reducer coupling efficiency and effectiveness

Yi , the calculated value is accurate, on-site experience is based on the universal values ​​) , based on the relationship between shaft power, traction and running between the

drag coefficient can be calculated resistance operation.
    Principles of food security equipment and conveyor drive pulley coefficient of friction : the sliding friction test method key determination. Will be placed in the

electrical parameters of the no-load belt conveyor is running , multi-drive conveyor unit of measure to alleviate ( the best is to open a single motor and other machines

EMU temporarily out ) , control power , the drive roller张力刚slide , pull the rope taut record read ( depending on the tensioning device , specific conditions ) , and then

slightly tighten the slip state, when the tense recording program , and motor power .

What is the food conveyor

Grain conveyor is mainly used for bulk WAREHOUSE Jincang job. Mainly by transport grain conveyor parts, steering parts and walking part . Mainly for large and medium-sized food

warehouses Jincang job.
Conveyor speed : increase transmission speed can Plastic belt conveyor increase transmission capacity . When the conveyor belt for traction to transport large pieces and length of the growing

transport speed increases . But high-speed operation of the belt conveyor to note vibration, noise and start rubber belt conveyor braking problems. As the traction member is a chain transmission

Sending machine , conveyor speed is not too large , in order to prevent increased power load. Simultaneous operation of conveyor technology , transmission speed should be

required to determine the production process .
Transmission capacity : conveying capacity of the conveyor is the amount of material fed per unit time . In the transportation of bulk materials , quality or volume of material

transported per hour is calculated ; conveying items into when to calculate the number of pieces delivered per hour .

Belt conveyor can transport items into

Belt Conveyor is a friction drive in a continuous manner for material transport machinery. It can be transported granular materials , can also be transported into pieces items.

It can be applied to the material in belt conveyor manufacturer a conveying line , between the feed from the initial point to the discharge point to form a final

Material transport processes. In addition to the purely material handling , but also can be used with various industrial production processes required in the process of

cooperating to form a rhythmic flow portable conveyor transport line . So the belt conveyor is widely used in modern industrial enterprise. In mine

Underground tunnel , mine ground transportation systems , open pit and concentrator , the widely used conveyor . It is used for horizontal or inclined transportation transport .

Very easy to use .

Plus rotary sieve grain conveyors can be used not only in the kiln workshop

Before the screw conveyor grain plus rotary kiln screen not only can be used in the workshop , finished workshop can also be used to prevent cement debris into the packaging

machine packing machine cause damage , Belt conveyor does not work . Kiln rotary screw conveyor installation screen , pre-wet mixer blades should be replaced every month from 1 to 2 times

After each replacement blades need emergency repair work two , stop the kiln 2 ~ 3h. According to incomplete statistics , the annual replacement of mixing leaves this one direct

loss of nearly 10,000 yuan , 30,000 yuan belt conveyor design more indirect losses plus rotary screen .1994 due to damage to equipment containing debris reasons phenomenon did not happen, thereby

increasing the operating rate ,

Calcining kiln to ensure the normal station to further improve and yield when we applied the screw conveyor rotary screen , with a diameter of 500mm, length 450mm. Rotary screen

available raw mill old rotary screen or welded steel punching volume , should be based on the length and diameter inlet and hoist

Screw shell width to determine . Sift Heads with four thick 3mm, width 50mm, length 196mm bearing iron skeleton , with the tail end cap sieve support . Spiral axis welding on

the inner rear cover open a hole Φ50mm , the rotary screen when working from the raw material to the discharge port spiral leaf goes into

Into a rotary screen , through the sieve into the hoist and then sent to the inlet shaft kiln via a transfer device. Rotates with the rotary screen , the screen on the debris

chute fall Yang Angle formed in the rear end cap , axis along the spiral trough waste fell from the hole . because the former rotary screen , the back-end are welded spiral

shaft.

Packing Scale Weighing PLC signal into a signal which can be recognized

1, the control principle

The use of load cells , weighing instruments, roller conveyor weighing transmitter weighing PLC signal into a signal that can be identified , re-use programmable PLC programming we need to get

a variety of actions .

2 , the mechanical Flexible Roller Conveyor structure

Rational use of mechanical design , machining, sheet metal technology and surface treatment technologies in the production of actuators form a perfect combination with the

control system .

Mobile Packing Scale Application and features

Mobile Packing Scale Application and features: Our latest double bucket, dual metering , filling , inspection, transportation , packaging scales as one stitch . Meter precision,

simple operation, to fill the gaps in roller chain conveyor the industry , greatly improving productivity . If the bag can be 60 kg , a reasonable reduction, you can

Standard reductions set to bag a plastic chain conveyor few pounds , so no irrigation lost every hoarding grain, food shortages, less food. Example of a grain, made ​​out of a hoard of about 300 tons of

grain , artificial irrigation bags , small scales seized pounds per ton piece , workers hands high , hands low , summarized the child allowed to play , the last one hoarding

lost 2-3 t not ask

Problems.

Packing Scale check whether the certificate

    First, examine the quantitative packing scale has a valid certificate , dividing the value and effectiveness of weighing whether to meet the requirements.

    Second, the technical status check is in the normal scale ; components should be complete , not damaged ; metering lever , bearing units can swing freely.

    Third, each weighing , known mass of the object chain conveyor shall not exceed the maximum capacity of the scale , but also can not weigh less than weighing objects.

    Fourth, weighing as much as possible so that objects placed on the loading platform in the middle drag chain conveyor position , when the vehicle enters the weighing platform , the speed shall

not exceed 5km / h, and the brakes gently .

    Fifth, the vehicle stop, the first prediction of its weight , the first move to open the main tour thallium revelation calibrator , and then move to adjust the balance Vice

swim thallium , and close readings showing calibrator record .

    Six continuous weighing, check weighing empty zero drift and calibration every 10 to 20 times.

    Seven in the weighing process , shall not affect the weighing accuracy of the moving parts, such as balance adjustment and thallium .

Belt conveyors used in industrial enterprises

Conveyor belt under the state 's current economic development situation , opportunities and challenges , the need to constantly innovative technologies to meet the challenges ,

seize opportunities. As the state is expected to strengthen the railways, highways, airports , docks and city Power Roller Conveyor public investment in infrastructure and other projects , the

country

The market demand for construction machinery products will be improved . Although this year's production increase will be lower than last year, but the annual construction

machinery industry will maintain a moderate growth.

The country has powered roller conveyor continued to increase investment in agriculture , agricultural development and stability of a country is always a top priority . Development of agricultural

mechanization are moving in large-scale direction. Therefore, the development prospects of agricultural conveyor belt is quite considerable , which saves farmers

Village labor resources, and improve labor productivity are of great strategic significance.

In industry , the application of the belt conveyor is widespread in all factories and enterprises in the assembly line , the conveyor belt is one of the essential transport

machinery and equipment . Belt conveyors in the use of industrial enterprises , for enterprises to expand production scale , improve labor productivity, savings

The cost of great significance

Analysis of spiral grain conveyor usage kiln workshop

    Before the screw conveyor grain plus rotary kiln screen not only can be used in the workshop , finished workshop can also be used to prevent cement debris into the packaging

machine packing machine cause damage , does not work . Kiln rotary screw conveyor installation screen , pre-wet mixer blades should be replaced every month from 1 to 2

Times, each time to replace the blades Gravity roller conveyor need emergency repair work two , stop the kiln 2 ~ 3h. According to incomplete statistics , the annual replacement of mixing leaves it a

direct loss of nearly 10,000 yuan , 30,000 yuan more indirect losses plus Rotary .1994 after the screening , due to damage to equipment containing debris reasons phenomenon did

not happen , resulting in improved heavy duty conveyor equipment operation

Rate, to ensure the normal calcination kiln station to further improve and yield when we applied the screw conveyor rotary screen , with a diameter of 500mm, length 450mm.

Rotary screen available raw mill old rotary screen or welded steel plate punching together, the length of the inlet diameter should hoist according

And to determine the width of the screw conveyor housing . Sift Heads with four thick 3mm, width of 50mm, 196mm long iron skeleton support , with the tail end cap sieve support

. Opening on the rear cover spiral welded inner shaft 1 a Φ50mm hole, when the rotary screen work , raw material leaves the spiral goes to the discharge port

Into the rotary sieve, through the sieve into the hoist and then sent to the inlet shaft kiln via a transfer device. Rotates with the rotary screen , the screen on the debris

chute fall Yang Angle formed in the rear end cap , axis along the spiral trough waste fell from the hole . because the former rotary screen , the back-end are welded spiral

shaft

Adjust the length of the belt conveyor installation tips

 When we use the conveyor belt, the installation procedure is particularly important. To ensure correct installation of the belt can not only avoid unnecessary defects, and also

allows the belt to work better .
    When installing the conveyor advance roller conveyor for the entire conveyor belt to be installed careful planning calculations, whether new or old belt replacement belt installed ,

otherwise it is likely to cause the situation to take a long conveyor belt , is a direct consequence weight ( weight counterweight ) hits the ground,

Lead to start slipping. Although there was no problem , no problem test , but the position of the lower configuration , running two or three months later , with heavy drooping,

hit the ground when starting . This is because the installation process does not take into account Flexible Roller Conveyor the elastic deformation and plastic deformation of the belt . Conveyor Safety

When loading or too short , you should leave a margin for future maintenance. If the length of the minimum basic tension in the spiral . Joint problems after a period of use ,

the conveyor belt margin is not sufficient to redo the joints, had to re- install the new belt. This makes our conveyor cause

The white waste. While enabling enterprises subject to certain unnecessary losses. This is what we want to see the production situation . Ideal conveyor installation is that

after installing the conveyor belt of moderate length ( we should take into account summer and winter temperature differences affect the expansion of the conveyor belt ).

Best to reserve a margin joints , which can effectively prevent the installation length of inappropriate questions .

Sealing food conveyor idlers

Grain conveyor idlers seal : roller often work in dusty premise load roller slime water sometimes still running, on both sides of the outdoor groove roller conveyor also because

of rain along the shaft gap penetration, roller chain conveyor cause bearing dust cover and cage rust, grease deterioration. Improved dense

Seal structure is an effective measure progress roller life . With automatic tensioning device with the use of self-moving tail , can be achieved in the context of the conveyor

downtime , for mobile plastic chain conveyor and telescopic belt conveyor tail , and greatly improve the transport efficiency of the conveyor . Automatic tensioning device winch

By the pressure sensor automatically controlled tensioning size , fluid pressure in the hydraulic tensioning device produced by the hydraulic cylinders on the conveyor belt by a

tensile force required tight belt conveyor operating conditions , operating conditions can be based on the tape machine need to adjust the tension of size.

Grain conveyor bearings: bearing failure is mainly due to moisture, dust or foreign invasion, bearing corrosion, deterioration caused by grease . Increase the diameter of the

ball , using the open -sided nylon cage, increasing the axial clearance of roller bearings can effectively prevent bearing seizure .

Its life is more than five times the ordinary bearings , power consumption can be reduced by about 18%.

Food conveyor outer cylinder : the salt spray corrosion resistance material such places severe corrosion of the outer cylinder surface , the surface of the conveyor will

accelerate corrosion and wear , is to solve this problem , the development of anti -static 160mm reinforced nylon outer tube is prevent corrosion of the outer cylinder to break

a new path. Hand roller conveyor

Grease , roller should use lithium grease , its high dropping point , fat loss is not easy , but also non-perishable caking extend roller life, reduce friction drag.

Sieving grain conveyor is a professional food equipment

Screening of food grain conveyors professional equipment , which can effectively remove impurities in food , food like skin , remove corn bran , grain removing stones , more

effective screening inside chain conveyor the moldy grain and immature tablets. Machinery and equipment simple and easy to use .

The clean-up screen for the three sieve bottom , go through the initial screening prior to the big screen and the fine soil and miscellaneous small miscellaneous cleaned , and

then there is the main winnowing drag chain conveyor fan for final clean-up before discharge , cleaning and then there are in most the front of the small distance projectile throwing bread machine

, and ultimately achieve clean up moldy food and

Food containing pebbles ! The small clear grain machine to solve the troubles of other food vibrating sieve after delivery , not only for you to solve the troubles of

transportation , better for the clean-up of food brought satisfactory results , which eliminates the need for unnecessary screening machine conveyor equipment investment , small

footprint, mobile

Easy to repair it
Large Dimensions: 4900 * 1850 * 1680
This machine is a large clean grain screening machine, used to clear leaves grain , bran shell, shriveled grain dust and other debris . Its organic impurity removal rate of 90%

, 92% inorganic impurity , it has a beautiful appearance , compact structure, easy to move, obviously dust cleaning efficiency , low energy consumption , easy to use

Rely on , etc., and the screen can be freely exchanged in accordance with user requirements, for different varieties of materials . Each part of the national food pipe , grain

and oil processing units and food storage service first cleaning equipment.

Transportation trends machine

Development trends of the conveyor are: ① continue to large-scale development. Several aspects of large-scale , including a large transmission capacity , large single length

and large transmission angle and so on. Length of the hydraulic transport device has reached 440 km or more. Single belt rubber belt conveyor conveyor length of nearly 15 km , and has appeared

Composed by a number of sets of contact between the two places and B " belt conveyor track ." Many countries are exploring long-distance, large capacity continuous feed conveyor

structure and better Incline Belt conveyor materials . ② expanding the use of conveyors . Can develop at high temperatures , low temperatures , corrosive , radioactive and flammable

Substances in the work environment , and can transport hot , explosive, agglomerate , viscous material conveyor. ③ so that the conveyor configuration control automation system

satisfies requirements for material handling single raised . If the post office sorting parcels used automatic car conveyor should be able to fill

Foot sorting operation requirements. ④ reduce energy consumption to save energy has become an important aspect of the research work in the field of transportation technology .

Has one ton of material handling one kilometer of energy consumed as an important indicator of the conveyor selection . ⑤ reduce the variety of conveyor job

Dust emissions generated , noise and emissions

Caesar feed belt conveyor

Caesar feed belt conveyor is a common problem , the reasons are multi-faceted . But the focus is to strengthen the routine care and maintenance .
1 point spread material reproduced reprinted material at the point spread mainly in the fall hoppers, chutes , etc. . If severe overload belt conveyor , belt conveyor chute

gauge damage rubber apron , rubber portable conveyor apron far longer at the material chute plate design material from the belt out of the lead

Slot. The above situation can be in control of the transport capacity , strengthen the maintenance to be resolved on maintenance.
2 Caesar feed concave section concave section belt vacant belt when the interval when the concave radius Plastic belt conveyor of curvature smaller segment will generate vacant belt , then the belt

into the groove circumstances change , because the belt has left the trough idlers , general groove angle becomes smaller, so that part of the material spread out . Therefore ,

in the design

Phase should be possible to count with a larger radius of curvature of the concave section to prevent the occurrence of such situations. As the mobile mechanical loading machine

, stacker-reclaimer machines and equipment in order to shorten the trailer is designed to be recessed section here no arc transition interval, when the degree of belt width is

smaller than the choice easier

Caesar feed .
3 material spreading spreading material of the belt when the deviation when the deviation is due to the two edges of the belt runs the height changes , the high side and the

other side is low, the spreading material from the lower side , the processing method is to adjust belt deviation.

Part of the screw conveyor

Usually consists of a screw conveyor screw machine body , and out of the device , drive three major components. Screw machine body from head section , the middle section and

tail section three kinds of components. Under normal circumstances, the middle section of the factory assembly in heat exchange manufacturers order of priority according to the length , the longest in the

middle section near the head

The middle section of the same length is put together , if there are special requirements, in the order given in the sort order. In the first section built with support thrust

bearing axial force in the middle air to water heat exchanger section and tail section of useful built- bearing screw axis , in addition, in the tail section is also equipped with an axially movable Trail

Bearing in error and to compensate for the length of the screw shaft to adapt to temperature changes . Have a physical form helical spiral surface (S system of law ) and with

spiral (D Method ) two. Between the screw shaft flange connection, ensuring the interchangeability coupling shaft for easy maintenance. Cover for the tile style

And clamped a lid on the housing deduction , For improved sealing performance, the user can cover and chassis between plus waterproof canvas . Jin, a device has a feed opening ,

square spout , hand-push spout , spout rack four. In the opening scene by the user using welded on body

. Arrangement of inlet and outlet port position should be taken to ensure that the distance between the ends of the discharge port , while avoiding filling spout and hanging

bearing cups , casing flange connection , such as touching the base . There ZQ series reducer drives + Y series motor , YTC gear motors two kinds.

Conveyor use can be divided into several

1 , bulk material handling machinery ( such as: conveyor screw conveyor bucket elevator steep conveyor , etc.)
( 1 ) by a drive belt conveyor conveyor belt tensioning device composed of the central frame and roller conveyor as traction and bearing member , whereby continuous conveyor

into pieces scattered and fragmentary automated sorting machine materials or goods .
A friction drive conveyor transported materials in a continuous mechanical . Apply it, the material can be transported in a certain line, from the initial feed point to the

final discharge point between hot water heat exchanger the formation of a material transport processes . It can deliver a granular material can also be

For delivery into items . In addition to the purely material handling , but also can be used with various industrial production processes required in the process of cooperating

to form a rhythmic flow transport line . So the belt conveyor is widely used in modern industrial enterprise.
Underground tunnel in the mine , mine ground transportation systems , open pit and concentrator , the widely used conveyor . It is used for horizontal or inclined transportation

transport .
Universal conveyor from the conveyor belt, roller , roller and drive , brake , tension , bend , loading, unloading , cleaning and other device components.
① conveyor
There are two commonly used with rubber bands and plastic . Rubber band applied between the working environment temperature -15 ~ 40 ° C. Mass temperature does not exceed 50 °

C. Transported upward inclination of Granules 12 ° ~ 24 °. Delivery available for large angle tread rubber band . Plastic belt with oil, acids,

Bases , etc., but for the poor climatic adaptability , slippery and aging. Bandwidth is the main technical parameters of belt conveyors.
② roller
Of single drum ( tape wrap angle on the drum 210 ° ~ 230 °), double drum ( wrap angle of 350 °) and multi- cylinder ( for power ) and so on . There grooved rollers , flat -

shaped roller , spherical roller, roller buffer . Grooved roller ( 2 to 5 of the roller component ) support bearing branch

For conveying granular materials ; aligning roller to adjust the lateral position of the band , to avoid deviation ; buffer roller mounted in place by the material in order to

reduce the impact of the band 's material .
③ drum
Minute drive rollers and idler pulley . Drive rollers of the main power transmission member . Of single drum ( tape wrap angle on the drum 210 ° ~ 230 °), double drum ( wrap

angle of 350 °) and multi- cylinder ( for power ) and so on .
④ tensioning device
Its role is to enable the belt to achieve the necessary tension to prevent slipping on the drive roller, and to the conveyor belt between the deflection roller to ensure within

a predetermined range .

Crusher

Conveying Machinery Network:
Widely used in mining , smelting, building material, highway , railway, water conservancy and chemical industry. There are currently used gravel mechanical jaw crusher , impact

crusher , winnowing mill, hammer Flat belt conveyor crusher , impact crusher , roll crusher , compound crusher

Machines. Jaw crusher ( jaw crusher ) , with a crushing ratio, even granularity , simple structure , reliable operation, easy maintenance, operating costs and economic

characteristics . 90 degree turn conveyor PF-I series impact crusher can process side length of 100 to 500 mm below the material , the maximum compressive strength

Up to 350 MPa , with a crushing ratio, cubic particles after crushing materials , etc. ; PF-II series crusher is suitable for crushing hard materials, such as cement limestone

crusher , has a large capacity , the material the advantages of small particle size .

Works rib belt conveyor resolved

Corrugated sidewall conveyor belt conveyor , also known as the edge , which is in the plane of the conveyor belt vulcanizing a princess with both sides of the bulkhead and can

shrink the corrugated ribs excel at one,rubber belt conveyor  like a bucket-shaped cross-section , the machine English to FLexowell, meaning flexible bucket . When turning the corner on the drum

, Wall corrugated tape can stretch their sides , and in the straight run time and still intact.
The machine works the Incline Belt conveyor same as bucket elevators , that the force balance by internal friction angle equal to the angle between the horizontal plane and the material
Thus , the material surface force balance position is a fixed position , the material surface in this position , often referred to limit the material surface , in the promotion,

limit the material over the surface of materials affected by the decline in G , and below the surface of the material in this relatively still fighting , the material together

with corrugated ribs on the belt

Duplexes roller conveyor

Duplexes roller conveyor bottom is suitable for transporting flat articles , the main part of the oil roller ,Weight Sorter  frame , frame, legs , and the drive unit of the drive means . With

throughput , running light, high efficiency , to achieve a variety of line shunt transport , suitable for the

Heavy goods transport . Roller conveyor can be divided indeed acting and plot- two.
From the structure is divided into :  hot water heat exchanger linear conveyor, turning conveyor, lifting transfer machine , road fork points, merging conveyors and other forms.
Divided from the roll material : metal roller , steel roller and so on. Thus can be applied to a variety of different materials and goods transport environments.
From the frame material is divided into : carbon paint, carbon steel , stainless steel profiles, aluminum profiles , etc.

Auger resolved

Commonly known as auger screw conveyor for conveying granular or powdered material level , the inclined conveyor , vertical transportation and other forms . Transmission

distance varies according to deformity , usually from 2 meters to 70 meters .
Transport principles : rotating spiral blades will be the passage of the screw conveyor transported materials . automated sorting machine So that the material does not rotate together with the screw

conveyor blade force is the material of its own weight and the screw conveyor cabinet friction materials .
Features: Screw rotating shaft is welded helical blade , blade surface transport of materials depending on the type of entities face, belt face, the blade surface type and other

types. Screw terminal helical check weighers axis in the direction of movement of the material has thrust bearings with material to spiral

Axial reaction force , the longer the captain , should be added to the intermediate hanger bearings .
There are two pairs of screw conveyor is welded to the screw conveyor shaft of rotation of the rotary blade . To put it plainly , is to organically combine two screw conveyor ,

consisting of a screw conveyor .
Screw rotation shaft rotation determines the conveying direction of materials, but generally in the design of the screw conveyor is designed according to the individual rotating

conveyor blade . When the reverse transport , will greatly reduce the life of the conveyor .

Knowledge of mechanical transport silicone cloth Product Introduction

Silica cloth series
Silicone rubber coated fiberglass cloth is high temperature, corrosion , high strength glass fiber cloth, impregnated with silicone rubber calendar or made ??, is a high

performance , multi-composite 90 degree turn conveyor materials and new products. Has been widely used in aerospace , chemical, oil , large-scale power generation equipment, machinery, metallurgy ,

electrical insulation and construction.
Silicone rubber fiberglass cloth main performance characteristics:
1 for cryogenic temperature between -70 ℃ to 280 ℃. Good insulation properties .
2 . Resistance to ozone , oxygen, light and weathering , excellent weatherability field use , life up to 10 years
3 has a high insulation properties, dielectric constant 3-3.2 , breakdown voltage 20-50KV/MM
4 good chemical resistance : 90 degree conveyor resistance to oil, water [ scrub ]
5 High intensity: both soft and malleable, cut processing
Main purpose :
1 Electrical Insulation : Silicone fabric has a high level of electrical insulation and can withstand high voltage load , can be made of insulating cloth , casing and other

products.
2 Non-metallic compensator : silica cloth can be used for flexible pipe connected devices, which can solve the thermal expansion and contraction of pipe damage , silica cloth

with high temperature resistance , corrosion resistance, aging resistance , good elasticity and flexibility It can be widely used in petroleum , chemical, cement , energy and

other fields.
3 corrosion aspects: Silicone rubber coated fiberglass cloth can be used as pipes, savings and external corrosion layer , excellent corrosion resistance , high strength, is an

ideal anti-corrosion materials .
Four other areas : Silicone rubber coated fiberglass membrane materials can be used as sealing materials, high temperature corrosion resistant conveyor belt, packing materials.
Color: silver , gray, red, black , white, transparent color , orange and so on.
Coating: Single or double-sided coating

Transportation machinery knowledge nylon pulley Product Description

Nylon pulleys as crane accessories already widely used in various lifting equipment , with its unique advantages gradually replace the old metal pulleys.
Use nylon pulleys advantages:
1, light weight, easy installation at Incline Belt conveyor high altitude .
2 , wear resistance and long service life.
3, the protective wire, Flat belt conveyor extend the service life of the rope . ( And steel wire rope pulley ratio to extend the service life of 8 times )
4 , does not produce friction sparks, strong safety performance.
5 , to meet the requirements of long-term outdoor operation.

Simple diagnostic methods provide transportation machinery gear vibration

Continuous engagement with teeth can transmit motion and power on the rim of the mechanical components . Gear is capable of engaging each other toothed machine parts , gears in

the transmission of the application appeared very early . Of the 19th century , the principle developed into gear cutting method and use of this principle of special machine

tools and gear cutting tool

Have appeared , along with the heat exchange manufacturers development of production, gears smooth functioning attention .
Simple gear vibration diagnostic methods
Simple diagnostic purpose is to quickly determine the gear is in normal working condition, in an abnormal working condition for further precision gear diagnostic analysis or

take other measures. air to water heat exchanger Of course, in many cases, the basis of a simple analysis of the vibration can also be diagnosed some

Apparent failures .
Simple diagnostic gear including noise diagnostics, vibration and shock pulse level diagnostic method (SPM) diagnostic method most commonly used is the vibration level

diagnostics .
Zhenping diagnostic method is the use of vibration to determine the strength of gear gear is in normal working condition of diagnostic methods . According to the determination

of different indicators and standards , determine the method can be divided into the absolute and relative value judgment method.
1 . The absolute determination method
The absolute determination method is the use of the gearbox parts amplitude values ??measured at the same measuring point directly evaluated as an indicator of operating status

. The absolute determination gear state identification method , must be based on a different gearbox , different requirements to develop appropriate criteria .

Based primarily on the development of the absolute criteria gear as follows: 1 ) A theoretical study of abnormal vibration phenomena ; ( 2 ) According to the analysis done by

the experimental vibration phenomena ; ( 3 ) to evaluate the measured data of the statistics ; ( 4 ) Reference domestic outside the relevant standards .

In fact , there is applied to the absolute value of all the gear determination standard, when the size of gear type, etc. , while its naturally different criteria . When a

parameter determined by the vibration of broadband judgment , the standard value must be changed depending on the frequency . Frequency

At 1kHz or less , according to the speed of vibration to determine ; frequencies above 1kHz , vibration judged by acceleration . The actual standard but also according to

specific circumstances .
2 -phase method of determining a time when
In practical applications , the criteria have not yet worked out the absolute value of the gear , you can take advantage of on-site measurement data for statistical average ,

relative to formulate appropriate criteria , using this standard determination method called relative value judgment . Relative criteria requirements

The same parts in the gear box at different times the amplitude of the measuring point measured by the amplitude compared to the normal state , and when the measured value is

compared with the normal value to a certain extent , a certain state is determined . For example , the relative value of the criteria specified actual value reaches 1.6 to 2

times the normal time to arouse

Note , it means danger , such as reaching 2.56 to 4 times. As used in accordance with the specific grading 1.6 times or 2 times in accordance with the grading depends on the

requirements of the gearbox may be higher rough devices ( e.g., mining machinery ) generally use multiple classification. Actual

In order to achieve the best results , you can also employ the two methods in order to compare contrast , a comprehensive evaluation .

Conveyor encyclopedic knowledge Daquan

Conveyor (Conveyor)
Conveyor is in a certain line of material handling machinery continuous delivery of materials , also known as continuous conveyor. Conveyor can be horizontal, inclined conveyor

- Shanghai Mechanical provides Dongyu
And the vertical conveyor can also automated sorting machine be composed of the space of the transfer line , the transfer line is typically fixed. Conveyor transport capacity , long distance , but also

in the transportation process to complete a number of process operations simultaneously , it is widely used .
Can be a single conveyor can also composed several other transportation equipment or horizontal or inclined conveyor system to meet the different needs of arrangement of the

operating line .
Transportation machinery by hot water heat exchanger works can be divided into: 1: Conveyor 2: Screw 3: bucket elevator
The main parameters of the conveyor
General material handling system according to the requirements , various conditions of material handling location , characteristics related to the production process and the

like to determine the material of the primary parameters . ① transmission capacity : conveying capacity of the conveyor is the amount of material fed per unit time . In

conveying bulk

When the material to the mass or volume of material transported per hour is calculated ; into items when in transport , in order to calculate the number of pieces delivered per

hour . ② Conveyor speed : increase transmission speed can increase transmission capacity . When the conveyor belt for traction to transport large pieces and length ,

transmission speed date

Trend increases. But high-speed operation of the belt conveyor to note vibration, noise and start braking problems. As for pulling pieces of a chain conveyor, conveyor speed is

not too large , in order to prevent an increase in the power load. Simultaneously process operation conveyor transport speed should be produced

Process requirements identified . ③ component size : the size of the conveyor components including conveyor width , slat width , hopper volume , pipe diameter and vessel size.

These components have a direct impact on the size of transmission capacity conveyor. ④ conveyor length and inclination : transmission lines

Direct effect on the length and inclination of the conveyor and the total resistance of the power required .

Screw safety rules

Screw conveyor equipment has become an important part of the entire production . Advanced structure, strong adaptability, low resistance , long life, easy maintenance ,

protection devices is a significant feature of the screw conveyor .
Before running the Pharmaceutical metal detector , first make sure the screw conveyor equipment, personnel, goods being transported are in a good state of security ; Second, check all moving

parts normally no foreign body , check all electrical wiring is normal, normal to the belt conveyor put into operation.

Finally, to check the difference between the supply voltage and the rated voltage does not exceed ± 5%.
1 passed an examination automatic checkweigher and operating permit holders who are allowed to operate the equipment. The operator must strictly observe safety shift system .
2 Check before starting the various parts of the connecting bolts are loose. Tighten if loose in a timely manner .
3 Check all lubrication points , to add a good lubricant ( grease ) , reducer oil line should be in the range of tick marks .
4 artificial prices moving motor couplings should rotate easily square with the start condition.
5 Check the slot machines and card cover , should be sealed well to prevent leakage of ash and dust flying.
6 boot sequence :
( 1 ) starting device or other device related subject material .
( 2 ) start the screw conveyor .
( 3) The starting material for equipment and installations
7 must be uniform feed to maintain uniform loading .
8 is strictly prohibited and hard particles of iron , screw conveyor to feed the people , to prevent damage , stuck equipment.
9 operation is forbidden to remove the cover to view the body of material handling situations , to prevent accidents .
10. Maintenance equipment must be shut down state , and instructions listed at the switch , to prevent accidents .
11 running machine head bearings and machine tail bearing temperature rise should not exceed 60 ℃.
12. Nose, tail bearing grease should be added once every 4h , 2-3h hanging bearing lubrication once and cut pay attention to the oil flow.
13 before stopping for the stop ( feeding ) feeding device or equipment , before walking down the empty upon the material , so that no load shut down, no-load power .
14 Keep equipment clean and hygienic.
15. Fill out the relevant records as required .
In the screw conveyor operation, must comply with the provisions of articles designed to be transported in goods , comply with screw conveyor design capability. Secondly, we

must pay attention to all categories of personnel not touch moving parts of the conveyor belt , non-professionals are not free to contact with electrical components, control

buttons

And so on. Finally, screw conveyor can not run the inverter stage circuit, such as determining maintenance needs , it must be carried out in order to run the stop frequency ,

otherwise possible damage to the inverter.
Screw run stop , press the stop button until the system can only cut off the power supply after all the stops.

Tubular conveyor installation debugging knowledge

Tubular belt conveyor is designed to introduce patented technology for a variety of complex terrain conditions for a variety of bulk materials transport density 0-2.5t/m3 ,

using ordinary tubular tape Operating ambient temperature range -25 to +40 ℃; any special requirements , with special specifications transportation

Allowable working environment with temperatures up to +160 ℃. Tubular belt conveyor application basically industrial belt conveyor no restrictions , no material transport can be employed , the typical

material handling are: ore , coal, coke , limestone, gravel , shale and alluvial soil . Some get very tricky materials, such as : steel thick

Shrink , petroleum coke , clay, slag, concrete, metal waste, wet fly ash, tailings , bauxite and dust , etc., can also be a tubular belt conveyor . The product can be widely

used in electricity ,material handling conveyor  building materials , chemicals , mining, metallurgy , port, harbor , coal, grain and other

Industry material handling systems. Because of its unique properties , widely used in foreign countries , the application is still relatively small in our country .
Tubular belt conveyor as a new way of transporting coal , has been widely used in foreign countries , because of its unique approach and superior general characteristics of the

belt in the country are increasingly being used in many power plants. Introduced the tubular belt conveyor installation and commissioning of construction technology and methods

for

Future coal belt conveyor installation and commissioning of accumulated experience .
Debugging tubular belt conveyor
Tubular belt conveyor to be installed, after acceptance , and the need for lubrication of the gear portion fill up empty load debugging. Observe the operation of reducer, motor,

rollers, belts and other equipment to record good reducer, motor , roller heat and vibration conditions . Special

Do not over- section belts to observe the operation , see section can put excessive volumes of tubular belt flat belt , flat belt into the tubular belt , when does not work,

stick to adjust excessive care segment . When the overlap is not part of the six tubular belt idlers are upper PSK , the PSK to be adjusted

Idlers .
After commissioning requirements:
1 , the overlapping portions of the belt rollers are in the upper six PSK .
2 , tubular belt turn the snake does not occur .
3, PSK care stick good contact with the belt .
4 , gear, motor vibration, temperature to meet the requirements.
5 , when to start and stop , tensioning device is working properly, the tape without skidding .
6 , not a scratch tape and do not allow the existence of the phenomenon of friction .
7 , when the coal, the entire roller should be flexible rotation .
8, the bearing operating temperature should be stable , bearing temperature <65 ℃, Rolling temperature <80 ℃.
9 , bearing and rotating parts no abnormal state.
10 , no oil spills, oil phenomenon .
11, the control system is properly flexible running operation .
12 , to contribute up to standard.
13 , interlocks and various accidents buttons work well .
14 , the gap chute between rubber apron and tape appropriate .
15, a hydraulic coupling without fever phenomenon .

Convex segments belt conveyor Troubleshooting

First, the convex cross section of the central conveyor belt camber
Convex segments belt conveyor belt section often occurs in the direction of the Central bagging, both central bulge. And to make the belt discount, folded after entering bend

pulley or belt drive roller interval belt conveyor design after the extent of damage will intensify . The main reason is bagging with discount transection of the belt

Surface of the central and lateral force per unit length on the value of the difference is belt conveyor manufacturer too large, the central part of the belt slide bagging or discount. Force per unit

length on the size of the difference value and the radius of curvature of the convex sections , roller groove angle. Groove angle, the smaller the radius of curvature of the

convex sections , the more severe camber and discounts .

When the belt conveyor trough angle of greater than or equal to 40 degrees, even in the straight section of the belt conveyor roller head or tail groove angle transition zone

bagging and discounts can also occur at this time should be reduced groove angle or lengthen the transition interval length the distance the belt groove angle slow transition .

For convex segments skin

Belt conveyors should be possible to increase the radius of curvature of the convex sections and transmission capacity to meet the conditions of reduced roller groove angle .
Second, the convex segments snap flat belt conveyor roller and oblique rolls
Belts snap onto rolls of flat roll and helical roller situation generally occurs between the moving bulk materials transport machinery. Such as ship loaders , stackers and

reclaimers . Such equipment cantilever is bent from the root position of the boom are susceptible to this phenomenon. At this time there is also equivalent to a belt convex

segments ,

Due to the geometry size restrictions , it is difficult to achieve a satisfactory transition radius of curvature of the convex section of the required size , the belt conveyor

is located at the root of the cantilever if only through a set of rollers to form two convex segments occurs when the belt Cards nursery rollers inclined flat roll and roller.

The solution

Here is the original one roller group formed two convex segments to forty-five or more groups .

Conveyor belt temperature Protection Act introduced

Roller and belt conveyor belt friction , its temperature measuring instrument , proximity detection roller mounted devices ( transmitters ) issued over-temperature signal , the

received signal is received by heat exchange manufacturers the three -second delay as part of the implementation of the action , cutting off the motor power supply, automatic conveyor stop switch , played a Thermal protection.
Head and mining conveyor coal level protection . If a conveyor operation or an accident can not be blocked or coal bunker is full , parking lots or other reasons , the head of

the pile of coal , coal- contact position sensor corresponding position DL and coal , coal bit to take immediate action to protect the circuit, so that biography

Conveyor belt stops immediately . Then air to water heat exchanger continue to the coal face , the back end of the heap of coal transported by the station in the rotation after the occurrence of an

appropriate stop until the loader automatically stop running .
Each type of conveyor should be in the right place , multi- belt will easily break . At this time, we should pay attention to maintenance .
Mine belt conveyor belt , if it fails, for example, the motor burned, damaged mechanical transmission parts , belt or chain broke , belt slippage , the belt is installed on the

unexpected magnetic switch passive components can not be turned off or the Secretary is not closed, then the normal speed

Control .

Tips for failure judgment conveyor

1, according to the sound operation of the gear unit determine their work status
Near the conveyor with the ear to listen or a screwdriver reducer touch Kazuya reducer housing , with the ear against the wood stick to listening reducer gears and bearings

running sound , sound reducer automated sorting machine normal operation is relatively balanced , when periodic abnormal sound heard , indicating that the teeth of the gear reducer

Deformation caused by the backlash smaller or interdental mixed metallic foreign body ; when the gearbox bearing abnormal sound heard at frequent irregular , indicating beads

bearing hot water heat exchanger frame damage or damage ; When you feel the vibration reducer often left , indicating that the entire meshing gears poor or loose bolts . Abnormal situation must be

Timely manner.
2, check the operational status of idlers
( A ) in the belt conveyor is running, observe the upper and lower rollers and idlers are flexible buffer
( 2 ) self-aligning roller, vertical roll and rotary parts of the conveyor belt deviation , is it flexible rotation .
( 3 ) The idlers and idler and the middle frame between whether jamming things .
( 4 ) The roller damage, abnormal sound, whether the lack of oil .
( 5 ) whether the lack of roll .
( 6 ) The roller is good contact with the belt .
3 , according to the judgment of belt conveyor load operating current situation
At rated current and rated current conveyor is running, proven conveyor running at rated load , belt conveyor working properly ; when the current exceeds the rating , indicating

overloading belt run ; when the current suddenly rises , much higher than the rated current,

Can be jamming things stuck conveyor belt, because immediately stop checking.

Conveyor equipment electrically common sense can not be ignored

For electrical aspects conveyor equipment maintenance , please note the following aspects of the problem .
( 1 ) the required use environment using conveyors electrical equipment.
( 2 ) Always check the tightness of the electrical components .
( 3 ) Check the tightness of the wiring terminal elements , too loose is bad , easy ignition and burn components.
( 4 ) Always check the mine conveyors electrical actuation components ( such as electric motors , relays, etc. ) of fever cases , that if there are unusual circumstances, the case should be

based on timely heat treatment, with the greatest degree of reduction of losses.
( 5 ) Check the electrical wiring insulation condition , so well insulated to ensure the safety of persons and equipment .
( 6 ) Once the ignition , smoke , insulation extensive damage etc., should be immediately shut down, Airport conveyor power off and dealt with accordingly , otherwise it may expand the scope of

failure .
( 7 ) When performing maintenance , conveyor equipment and should be marked or wiring electrical schematic completed in strict accordance with the wiring diagram , not free

random access or short , in order to avoid significant damage to electrical equipment ( such as inverter, etc. ) .
Attention to these details of common sense

Scraper conveyor nose and tail frame repair and overhaul standards

First, conveyor nose, tail , the transition slot , over the bridge should be no open welding , should be closely linked . On both sides of the plate rack vertical degree of

tolerance not more than material handling conveyor 2 mm . Rack mounted gear positioning surface , holes and other documents should meet the technical requirements .
Secondly, the head frame , tail frame and slot connections transitional remember to close . Staggered up and down about the distance should be less than 3 mm .
Again , the pressure chain attached firmly , wear should not exceed 6 mm. Over time , the available welding or thermal spraying methods be repaired.
Next, the overall food conveyor sprocket assembly , blind shaft installed in accordance with the technical documentation requirements. When using the split sprocket structure , semi- cylinder

, half- sprocket combinations gap should meet the design requirements , the general should be in the range of 1 to 3 mm .
Finally, the head shaft , tail shaft rotation flexibility, the phenomenon can not touch a card .

Conveyor installation work steps

Conveyor installation steps:
Crossed and check the civil construction , view embedded steel anchor bolts and conditions and the location of the various components of the conveyor ;
Then install the industrial conveyor bolt truss ;
Installation and adjustment of equipment ( including upper and lower rollers, wipers , drives , etc. ) ;
Were installed sequentially belt hoist , telescopic head , guide trough, tensioning devices and all electrical parts bracket ;
Then tape industrial belt conveyor cutting and curing connections.
Electrical part of the conveyor installation steps :
1 Install cable ducts ;
2 Install limit switches , protective devices , cabinet , etc. ;
3 Install lighting and cabling ;
4 Finally connect the wires .

Sand the next five years with the development trend of the belt conveyor (Ⅲ)

Thus, the former needs to be perfect, the latter shall develop. But for self-moving tail requirement is common, both to meet the normal working hours skid conveyor requirements,

but also to meet the conveyor Food conveyor downtime to achieve rapid self-shift. ⑺ efficient storage belt and tensioner seal of use

Closed storage winch red tight band structure and the main tension easily derailed car, conveyor Yi deviation, telescopic conveyor belt when the car is not self-moving roller,

the need to manually hot water heat exchanger goes overhaul trouble. Adopt foreign advanced structure with open storage devices and high-precision, high-torque, large stroke automatic tensioning design

Equipment, roller conveyor with telescopic trolley can automatically place. Conveyor belt Yi deviation, the phenomenon does not appear derailment. ⑻ conveyor varieties models

fewer species, rubber belt conveyor single function, the use of limited scope and can not give full play to its performance, such as the expansion of transport people, or two-way haul transport and

other functions, so

A multi-purpose machine; addition, China coal mine geological conditions vary widely, the layout of the transport system often some special requirements, such as bending, large

angle (> +25 °) until the vertical lifting, etc., should develop a special type of dedicated machines kind of belt conveyors. 3.3 reliability, life on

The gap between the tensile strength of China's production of conveyor ⑴ whole flame retardant fabric conveyor belt up to 2500 N / mm, foreign to 3150 N / mm. Flame retardant

conveyor belt rope up to 4000 N / mm, foreign to 7000 N / mm. ⑵ joint strength conveyor belt joint strength for the mother country

With 50% to 65%, up to mastering foreign 70% to 75%. ⑶ idler roller life of our existing technology and foreign comparative, short life, low speed, resistance, while the United

States such as the use of new oiling roller, its running resistance, bearings lubricated with thin oil, greatly improve the care roll

Life, and can be used as a high-speed roller conveyor, the use of a wide range of significant economic benefits. Our conveyor idler life 20000 h, life abroad roller 5 to 90,000

h, domestic roller life expectancy was only 30% of foreign products to 40%. ⑷ conveyor reducer life I

State conveyor reducer life 20000 h, foreign reducer life 70,000 h. ⑸ conveyor running up and down on the control system reliability is poor gap ⑴ 3.4 drive speed of the fluid

coupling and hard gear reducer drive abroad diverse ways, such as the BOSS system, CST can

Control and drives, and control accuracy.
Monitoring devices have been using high-grade foreign conveyor programmable controller PLC, developed advanced primary and comprehensive program of soft power relay control

technology and data admissible, processing, storage, transmission, fault diagnosis and automatic monitoring system such as a complete query. Only our mining conveyor

With a mid-range programmable controller to control the conveyor starts, normal operation, shutdown and other works. Although with controllable Kai (system) support device used

in conjunction to achieve controllable Kai (system) moving with speed synchronization, power balance and other functions, but it does not automatically close device without it

Fault diagnosis and inquiries. ⑶ abroad conveyor belt in addition to installing protective devices to prevent belt running, slipping, tearing, too full blockage, automatic

sprinkler dust and other protective devices, in recent years has developed a lot of new monitoring devices: drive pulley, change the drum and the temperature of roller group

Degree of monitoring systems; smoke alarm and automatic fire extinguishing equipment; fiber woven belt longitudinal tear and joint monitoring system; proof electronic belt scale

automatic metering system. These new protection system of China's basic in the blank. And our existing skid pile of coal, Coal Chute Mancang protection

, Anti-deviation, over-temperature sprinklers, smoke alarm device reliability, sensitivity, life expectancy is relatively low.
Coal belt conveyor technology trends 4.1 large-scale equipment, improve transport capacity in order to meet the needs of high yield and efficiency of intensive production, belt

conveyor to increase transmission capacity. Long distance, high belt speed, large capacity, high power is the inevitable trend of future development, but also

High-yield and efficient mine transportation technology development direction. 10a in the future within the throughput will be increased to 3000 ~ 4000 t / h, but also speed

increased to 4 ~ 6m / s, the length of the telescopic conveyor belt to reach 3000m. Powerful for steel cord conveyor in order to be extended to 5000m

, The stand-alone drive power required to reach 1000 ~ 1500 kW, belt tensile strength of 6000 N / mm (rope core) and 2500 N / mm (steel cord). Especially coal mine conveyor

trough scalable technology development, along with the emergence of high-yield and coal face of technology is not

Breaking development, the original telescopic belt conveyor, whether it is the main parameter, or operating performance are difficult to adapt to the requirements of high-

yielding and efficient face, the main parameters of the mine site needed a larger, more advanced technology, more reliable performance over long distances, large capacity,

high-power trough retractable belt transmission

Sending machine, in order to improve the level of conveyor technology is designed to fill the gaps, proximity and industrial countries to catch up with international advanced

level of technology. It contains seven key technology areas: ⑴ belt dynamic analysis and monitoring techniques; ⑵ soft start and power balancing technology; ⑶ in

Between the drive technology; ⑷ automatic tensioning technology; ⑸ new high-speed roller life technology; ⑹ quick self-moving tail technology; ⑺ efficient storage tape

technology. Component parts to improve performance and reliability of equipment operation rate depends primarily on the high and low performance and reliability of component

parts.
In addition to further improve and enhance existing metadata component performance and reliability, but also continue to research and development of new technologies and

component parts, such as high performance controlled soft start technology, dynamic analysis and monitoring technology, and efficient storage tape devices, rapid self- Move the

tail, high roller, so that the belt

The performance of the conveyor is further improved. 4.3 expand functionality of a machine of expanding transport people, or two-way haul transport and other functions, so a

machine, so as to maximize economic benefits. Development of special type, such as curved belt conveyors, inclined or vertical lift and so on.

Sand the next five years with the development trend of the belt conveyor (Ⅱ)

Conveyor Conveyor reducer reducer life life of 20,000 h, foreign reducer life 70,000 h. ⑸ conveyor running up and down on the control system reliability is poor gap ⑴ 3.4

drive speed of the fluid Conveyor System coupling and hard gear reducer and abroad Transmission

Diversity, such as the BOSS system, CST controllable transmission, and control accuracy. ⑵ monitoring device has been adopted abroad conveyor grade programmable logic

controller PLC, the development of advanced primary and comprehensive program of soft power relay control technology and data admissible, processing, storage, transmission,

Fault diagnosis and automatic monitoring system such as a complete query. Our conveyor using only mid-range Belt conveyor programmable controller to control the conveyor starts, normal

operation, shutdown and other works. Although with controllable Kai (system) support device used in conjunction to achieve controllable Kai (system) moving with speed

Synchronization, power balance and other functions, but it does not automatically close device, there is no fault diagnosis and inquiries. ⑶ abroad conveyor belt in addition to

installing protective devices to prevent belt running, slipping, tearing, too full blockage, automatic sprinkler dust and other protective devices, in recent years has developed

a

Many new monitoring devices: drive pulley, change the drum and idlers temperature monitoring system; smoke alarm and automatic fire extinguishing equipment; fiber woven belt

longitudinal tear and joint monitoring system; proof electronic belt scale automatic metering system. These new protection system of China's basic

In the blank. And our existing skid pile of coal, Coal Chute warehouse full protection, anti-deviation, over-temperature sprinklers, smoke alarm device reliability, sensitivity,

life expectancy is relatively low.
Coal belt conveyor technology trends 4.1 large-scale equipment, improve transport capacity in order to meet the needs of high yield and efficiency of intensive production, belt

conveyor to increase transmission capacity. Long distance, high belt speed, large capacity, high power is the inevitable trend of future development, but also

High-yield and efficient mine transportation technology development direction. 10a in the future within the throughput will be increased to 3000 ~ 4000 t / h, but also speed

increased to 4 ~ 6m / s, the length of the telescopic conveyor belt to reach 3000m. Powerful for steel cord conveyor in order to be extended to 5000m

, The stand-alone drive power required to reach 1000 ~ 1500 kW, belt tensile strength of 6000 N / mm (rope core) and 2500 N / mm (steel cord). Especially coal mine conveyor

trough scalable technology development, along with the emergence of high-yield and coal face of technology is not

Breaking development, the original telescopic belt conveyor, whether it is the main parameter, or operating performance are difficult to adapt to the requirements of high-

yielding and efficient face, the main parameters of the mine site needed a larger, more advanced technology, more reliable performance over long distances, large capacity,

high-power trough retractable belt transmission

Sending machine, in order to improve the level of conveyor technology is designed to fill the gaps, proximity and industrial countries to catch up with international advanced

level of technology. It contains seven key technology areas: ⑴ belt dynamic analysis and monitoring techniques; ⑵ soft start and power balancing technology; ⑶ in

Between the drive technology; ⑷ automatic tensioning technology; ⑸ new high-speed roller life technology; ⑹ quick self-moving tail technology; ⑺ efficient storage tape

technology. Component parts to improve performance and reliability of equipment operation rate depends primarily on the high and low performance and reliability of component

parts.
In addition to further improve and enhance existing metadata component performance and reliability, but also continue to research and development of new technologies and

component parts, such as high performance controlled soft start technology, dynamic analysis and monitoring technology, and efficient storage tape devices, rapid self- Move the

tail, high roller, so that the belt

The performance of the conveyor is further improved. 4.3 expand functionality of a machine of expanding transport people, or two-way haul transport and other functions, so a

machine, so as to maximize economic benefits. Development of special-type belt conveyor, such as bending conveyor, inclined or vertical

Enhance the conveyor. ⑵ reliable controllable soft start technology and power equalization techniques long distance and large capacity belt conveyor as power, long distance and

multi-motor drives, soft start mode must be used to reduce the transmission mechanism of dynamic tension, especially when multi-motor drive . To reduce the power

Net impact of the soft starter should have timeshare slow start; also control the conveyor starting acceleration 0.3 ~ 0.1 m/s2, solve bearing belt and the drive belt and

conveyor belt speed synchronization problems swell phenomenon, reducing dollar the impact member. Due to manufacturing errors and electrical characteristics of the error, the

drive

Fixed point of power will appear uneven, once a motor power is too large will cause burning motor accidents, therefore, the power balance between the motors should be

controlled, and improve balance accuracy. China has a large number of application speed fluid coupling to achieve the soft start conveyor and power level

Balance, to solve the long-distance belt conveyor starter and power balance and synchronization issues. But its regulation accuracy and reliability compared with other countries

there is a certain gap. In addition, long-distance high-power requirements of a coal conveyor belt speed in addition, we also need an inspection belt belt speed, adjusting

Although speed fluid couplings soft-start and power balance, but no need to develop suitable long-distance grade hydraulic speed control device. When a single power> 500 kW, the

controllable CST soft starter to demonstrate its superiority. As is controlled soft starter ring gear planetary gear reducer with wet grinding

Rub clutch combination (ie viscous drive). Through the proportional valve and control system to achieve the soft start and power balance, the adjustment accuracy of up to 98%.

But the price is expensive, need localization.
Technical performance gap with our main performance parameters of the belt conveyor can not meet the needs of high-yield and efficient mine, especially trough belt conveyor

scalable key components and their functions, such as self-moving tail, belt and efficient storage tensioning device has such a big gap with foreign countries.

⑴ installed power of working face telescopic belt conveyor maximum installed power of 4 × 250 kW, foreign products up to 4 × 970 kW, belt conveyor domestic foreign products

installed power of approximately 30% to 40% fixed belt conveyors installed power greater difference. ⑵ transport

Maximum volume output capacity of belt conveyor is 3000 t / h, abroad reached 5500 t / h. ⑶ maximum width of conveyor belt of 1400 mm, maximum abroad 1830 mm. ⑷ with speed

limits as trustee roller speed, our conveyor belt speed of 4m / s, country

Outside of 5m / s or more. ⑸ transport length of working face is 3000 m, foreign to 7300m. ⑹ self-moving tail with high yield emerging face, requiring trough belt conveyor

tail with retractable face rapid advance rapidly since the shift. Domestic self-moving tail main

To rely on imports, mainly two kinds: (a) moving together with the loader self-moving tail unit. (B) self-moving tail unit. The former is only a propulsion cylinder, the latter

has two forward cylinders. Claiming bandwidth of tail for a 1.2 m in the country on the conveyor, the disadvantage is self-moving tail lose

The deviation is too small conveyor belt, correcting weak, poor rigidity. German production of self-moving tail better than the former in domestic use, horizontal, vertical, two

cylinders of offset each direction, correction ability.

LS screw conveyor structure description

    The general structure of the LS screw conveyor drives, the first section , the standard curve conveyor sections , optional sections , tail sections. Screw conveyor drive is a typical

constant torque load , mainly by motor and reducer . Selection of the motor is calculated according to the actual use to determine its power speed , determine the model ;

reducer through a fixed transmission ratio selection models.
    The first Heat Exchanger section , the standard sections , matching the main part of the section and tail section are almost all contain organic grooves and spiral ( spirochetes are mainly

composed of helical blades and screw axes ) . The difference is : the first section contains a first end of the front axle and bearings , chassis has opened a discharge port :

standard sections and optional sections are substantially the same structure , mainly of different sizes and contain unique suspension bearings ( hanging bearing ) ; the tail

section contains some tail shaft and tail bearings , chassis on the opening inlet ( screw conveyor can be set to multi-point and multi-point feeding the material , you can have

multiple inlet and discharge port ) .

LS300 screw conveyor drive and structural preparation

    LS300 screw conveyor drive unit is the whole of the power source . It drives a ZQ series reducer + Y series motor , YTC two kinds of gear motors .
    Drive by a Y-shaped motor , Airport conveyor series reducer and drive frame components. Preganglionic department head with thrust bearings . Transportation of materials can withstand

axial force generated when . Standards are set to the middle section of a suspension bearing , the end portion with postganglionic roll ( plain ) bearings and the base for

supporting the spiral Metal detector for food coil and the compensation error of the length , starting from the head of the screw conveyor should be installed , in sequence . In general arrangement

should pay attention to the feed inlet should not be set bearing in hanging above the spout should not be located at the base or chassis flange connections . If for open spout

and can not affect the base of the arrangements to follow this principle , the use of units should draw screw machine General Plan .

Prevent large angle conveyor belt deviation method

     Inclined belt conveyor belt used by the baseband traditional wavy , ribs and divisions. Baseband appearance with ordinary conveyor belt, sidewall is wavy . In the

production practice , the traditional large angle belt conveyor has a fatal weakness: belt ribs long and turn the platen , edger serious friction between the baseband ,

resulting in a shorter working hours after gravity conveyor the belt ribs wear rupture occurred and baseband tearing , greatly reducing the corrugated sidewall belt life . In the past the main

measures to prevent the belt deviation is controlled by the vertical roller belt position baseband guarantee to achieve, so turning roller and the belt at least one side wall

contact industrial belt conveyor friction , causing the belt gradually wears rupture.
 In order to prevent large angle belt conveyor belt deviation shall organize its structure in accordance with the following methods :
    1, in the corrugated wall of the belt 2 by the air side of the overall increase of vulcanized belt guide , in turn, processed on the platen a respective guide groove , the

guide groove of the guide belt is fitted to ensure that the belt ribs are not turn in direct contact with the platen .
    2, in the middle of the fuselage with a plurality of small pinch roller guide groove belt deviation limit , abolished the vertical roll , avoiding the sides of the vertical

roll with baseband baseband side squeeze caused tearing, to ensure the integrity of the baseband to improve the life of the belt and the machine .

Belt conveyor applications and features

    Belt conveyor is a continuous conveying equipment in the most efficient, most commonly used as a model . As a simple structure, less noise during operation , widely used in

mining , metallurgy, hydropower construction sites , ports and industrial enterprises within the assembly line . In China loading and unloading of bulk cargo ports collection ,

the belt has become Crushing equipment a necessary device in the handling and transportation of coal , bulk grain , ore and other professional pier used a lot of long distance, high production

efficiency, fixed belt conveyor , as well as belt conveyor machine as the main ship loaders , unloaders , reclaimers and stacker machines.
    Comparison with the intermittent operation of the crane , belt conveyor has the following advantages :
    1 ) belt conveyor roller chain conveyor can be kept in the same direction for the transport of materials , loading and unloading without stopping , can be transported at high speed , with high

productivity. And this high productivity is far from intermittent crane can be compared. For this reason , the weight and cost of the device are the same, much less than the

productivity of the crane belt machine productivity .
    2 ) As the feed belt uniform , while its speed and relatively stable , and therefore , in the course of which the power consumption is not changed ; the intermittent

operation of the crane of the wide variations in power consumption . Therefore, the calculation of power and belt conveyor drives in terms of weight and cost less than most of

the intermittent work cranes.
    3 ) For the same reason, the maximum load of the conveyor belt and the difference between average loading cranes generally small and the load difference is very significant.

Screw contrast abroad

    The main properties of the screw conveyor and parameters have not meet the demand for high-yield and efficient mine , especially trough screw conveyor scalable key

components and their functions , such as self-moving tail, efficient storage and belt and tensioning devices abroad has a big gap. Main differences are the following:
    ( 1 ) Installed power : vertical conveyor My working face retractable screw machine maximum installed power of 4X250KW, foreign products up 4X970KW, screw machine -made foreign products

installed power of approximately 30% -40% .
    ( 2 ) transport capacity : the maximum volume of screw conveyor is 3000 t / h, abroad reached 5500 t / h.
    ( 3 ) Maximum Belt Width : My screw machine is 1400mm, the largest foreign to 1830mm.
    ( 4 ) with speed : As trustee roller speed limit , our spiral conveyor belt speed of 4 meters 90 degree turn conveyor per second, is 5 meters or more foreign
    ( 5 ) working face Transport Length : our country is 3000m, foreign to 7300m.
    ( 6 ) self-moving tail: As the face of the emerging high-yield , scalable requested trough screw conveyor tail With the rapid advance of face and fast self-moving . Domestic

self-moving tail mainly rely on imports .
    ( 7 ) Efficient storage belt and tensioning device : the band structure of a closed reservoir mainly tensioning easily derailed car , conveyor Yi deviation, telescopic

conveyor belt when the car is not self-moving roller , need manual goes on, overhaul trouble. Adopt foreign advanced structure with open storage devices and high-precision ,

high-torque , large stroke automatic tensioning device , roller conveyor with telescopic trolley can automatically place. Conveyor belt Yi deviation, the phenomenon does not

appear derailment .
    ( 8 ) Conveyor varieties: varieties of small models , single function , the use of limited scope and can not give full play to its performance, in addition , China's coal

mine geological conditions vary widely, the layout of the transport system often some special requirements, such as bending , large angle until the vertical lifting , etc.,

should be developed machines of special type of screw conveyor .

Slow screw conveyor application characteristics

    When the conveyor speed is low , the spiral surface material by the gravitational influence of far greater impact by centrifugal force , thus turning the material

continuously along the spiral Flexible Roller Conveyor facing down , so will produce an axial displacement of the screw conveyor .
    The filling coefficient of screw machine is generally less than 0.5 . Because excessive filling , the material is not slid along the spiral surface , but it was stirred over

the helical screw shaft set , powered roller conveyor and can not get the maximum axial velocity . Since slow screw conveyor material influenced by gravity , obviously it can not be used for vertical

screw conveyor or a larger tilt angle upward transport situation .
     Slow conveyor transport capacity, but in the transportation of the material during rolling is always in a state free of loose , less subject to extrusion, suitable caking ,

large abrasive materials. When using standard screws, not only to maintain a rapid slide down the speed, and on the inclined conveyor has a certain ability to adapt ( generally

less than 20 °inclination )

LS series screw conveyor main structural features

    Screw conveyor equipment in China has a history of decades of application , in this long process , the spiral machine equipment constant technical innovation, improve and

perfect , now screw Extendable conveyor machine equipment can be completed in horizontal, inclined , vertical, mobile conveyor , also developed a shaft helical screw shaft and twin-screw , under

which there are a variety of different specifications, in order to have the most extensive helical axis , drag chain conveyor the main representative of the level of screw conveyor LS series , the

series of spiral machine is mainly used for mining , metallurgy, building materials, construction, chemical , laboratories and other occasions , the main structural advantages :
    ( 1 ) using high quality imported high-strength wear-resistant steel making continuous helical blade , made ​​after forming the blade pitch error less than 5mm and smooth

surface to ensure uniform material handling , stability, thus ensuring the material measurement repeatability.
    ( 2 ) continuous spiral blade when making use of cold work hardening of the surface treatment, hardness and wear resistance than ordinary double blades around the outer edge

of hardness up to HB240.
    ( 3 ) before and after the festival spiral blade is sparse , dense two kinds of pitch , effectively prevent plugging . Commonly known as " eat less , spit fast ." Blades

ensures high precision material handling system to do when the tube is full , users from the screw conveyor inlet suction flat canvas sleeve case will be able to judge the

merits of the screw conveyor .
    ( 4 ) screw machine axis are set within a certain distance with intermediate support hanging bearing an inner shaft rotation, hanging in the middle bearing cast steel or

cast aluminum multi-use , single cantilevered bearing body joint of the front section of the blade interrupt spacing is smaller, material overcurrent section maximized and that

material flow smoothly without hindrance .
    ( 5 ) Screw the inlet port to connect with cement silo is divided into : ball joint flange rigidly connected and hanging tarpaulins soft connection plus two forms . Visual

equipment disassembly frequently decide interface forms.
    ( 6 ) before mounting body specially designed to enable normal operation helical axis force is pulling its tension by former bearings, thrust bearings commitment to prevent

the lifting gear and shaft seat pressure, under pressure to avoid the bolt shaft phenomenon generated sweep chamber .

Tube and trough screw conveyor difference

     Previous article described a shaft and shaftless screw conveyor distinction generally made ​​in the form of spiral slot machines and tube are two types , today on the tube

and trough screw conveyor plastic chain conveyor differences are described below:
    Tubular screw conveyor can also be called screw feeder , tubular screw conveyor inlet is added at the feed end of a feed, or feed hopper, while the trough screw conveyor is

part of the spiral tube body Restructuring the groove, the use of two kinds of screw conveyor is the difference between : a tubular screw conveyor machine

Smaller amount , and heavy duty conveyor the transmission distance is shorter than the trough screw conveyor , feeding amount is also somewhat different , tubular screw conveyor feeding amount less

than the trough screw conveyor . But the former also has a unique advantage: you can easily move , which can be welded to the tubular body casters, convenient and mobile ,

flexible and convenient

. And can communicate with each other vibrating screen supporting the use of screening equipment , to reduce production costs , improve production efficiency effect. Fully

enclosed screw conveyor screw conveyor and easy to clean surface , can ensure environmental sanitation and the delivery of materials from contamination, does not leak, torque,

energy

Consumption is low , due shaftless spiral , material clogging , the discharge opening is not blocked, which can lower speeds , smooth transmission, reduce energy consumption and

transmission capacity . Throughput is the same as a conventional shaft screw diameter 1.5 times . Long distance transport . Single conveyor lengths up to 60 m .

According to user needs , the use of multi-level series -mounted , ultra- long-distance transportation of materials . Can flex .

Mine belt conveyors in the production line application

    Belt conveyor is a continuous conveying equipment, has applications in many occasions , such as supermarkets , workshops , etc. These occasions can be said of the belt

conveyor is a relatively small bucket elevators belt conveyor. In coal mines, sand and gravel quarry , metallurgy, chemical industry, construction , building materials and other fields

Together have applied a standard mine belt conveyor , belt conveyor of this type in the production process assume a major role , belongs to a large transportation equipment,

typically used to silo or shaker 90 degree conveyor next affected device transportation of materials, can be up to a few kilometers away , should primarily

With a series of belt conveyor stationary belt conveyor TD75 , DT and large angle belt conveyor belt conveyor .
    TD75 belt conveyor widely used in the coal industry as a belt conveyor is used for conveying bulk , powder, granular or finished material handling equipment over long

distances . Widely applied in metallurgy, mining, coal , power plants, chemical plants, building materials, ports and other industries. Based on the input

Send different processes can stand-alone, multi-level multi-machine Relay transport .
    DT is the original type fixed belt conveyor TD75 type machine , DX two series of belt conveyors unified , replacement new product can be widely used in metallurgy, mining,

coal, ports, power plants , building materials , chemical industry , light industry, petroleum and other industries.
    DJ inclined belt conveyor is a kind of material can be inclined conveyor conveying equipment , conveyor angle ranging from 0 ° ~ 90 ° range. With corrugated sidewall

conveyor belt using the belt and transverse bulkhead in underground mining engineering , open pit mining , large-scale self-unloading peers and have adopted

The belt conveyor equipment can be used for coal, chemical, metallurgy, electric power, light industry, construction , ports and other industries ,