Belt conveyor related knowledge

Function of belt conveyor speed protection deviceThe function of the speed protection device is to stop the belt conveyor automatically when the speed of the conveyor belt is inconsistent with the design value and overspeed or under speed occurs.Magnet type: install the magnet on the side of the driven drum, and the speed sensor shall be installed on the support corresponding to the magnet. When the drum speed of the belt conveyor is lower than the set value and maintained for 5 seconds, the belt conveyor will automatically power off and stop.Roller type anti-skid protection: the sensor is installed on the lower adhesive tape and fixed on the H-frame.Ten protective devices to be installed on belt conveyor1. Speed protection;2. Coal stacking protection;3. Deviation protection;4. Temperature protection;5. Smoke protection;6. Overtemperature automatic sprinkler;7. Tear protection device;8. Emergency stop protection device along the line;9. Guard rails and warning signs shall be set at the head, tail, drive drum and guide drum, and bridges shall be set at the places where pedestrians cross the belt conveyor;10. The belt conveyor in the main transportation roadway also needs to be equipped with tension drop protection device.

Belt conveyor PrinciplePrinciple of operation:A belt conveyor is simply an endless strap of flexible material stretched between two drums and supported at intervals on idler rollers. When the drum rotated by the driving motor, the belt will move with roller due to frictional resistance, there by the material placed on the belt will be transported from one place to other.Majority of belt conveyors are equipped with flat belts. Troughing the belt or fitting sidewalls will increase the carrying capacity. Fitting the transverse slats or texturing the surface of the belt will help to operate the belt conveyor for steep inclined application. The end of the conveyor where transported material is loaded is termed as ‘tail end’ or ‘feed end’ and the other end, from which the load is discharged, is called as ‘head end’.Belts: Belts may be flat or fitted with a pattern of cleats or flights molded into its surface to reduce the tendency for the conveyed material to slip. The belts may be constructed with vertical sidewalls, which may be supported by transverse slats to operate much steeper incline than the normally accepted. Two methods are employed i.e. vulcanized splice and mechanical fasteners at the ends of the belt to make the belt endless. The expensive vulcanized splice gives a much stronger and longer lasting joint. The cheaper mechanical fasteners tend to restrict the working conditions of the belt.Idlers: The carrying capacity of the flat belt is increased by modifying the cross sectional profile of belt so that it forms a trough. This is achieved by troughing idler, which consists two to five rollers.Drive arrangements: The drive may be at either end of the conveyor, but prefers to drive the head end drum since the smallest amount of belt being subjected to the maximum tension. The effectiveness of the conveyor drive is dependent upon the difference in tension between the ‘tight side’ and the ‘slack side’ of the belt, the friction between the belt and the drive drum and the angle of wrap or arc of contact of the belt to drum. The power that can be transmitted from the driving drum to the belt is limited by the point at which the belt begins to slip. In order to increase the power either coefficient of friction to be increased by applying a rubber lagging to the surface of the drum or to increase the angle of wrap by ‘snubbing’ the drum or by providing a multiple drive.Belt slip: In the belt drive there will inevitably be a certain amount of belt ‘creep’ resulting from the varying tension in the belt as it passes around the drum. The term ‘creep’ refers to the relative movement between the belt and the surface of the drum that happens as the stretch in the belt decreases with the reduction in tension. The arc of the drum surface over which creep occurs will tend to increase as the tight side tension increases, for example as a result of increasing the load on the belt, and if the ‘angle of creep’ approaches the ‘angle of wrap’ the belt will be on the point of slipping. For this reason that a certain inherent tension should be maintained, even in the slack side of the belt.Belt tensioning: The needed tension can be provided in a number of ways by suitable arrangement like pulling back the tail drum or idler pulley and also by providing ‘drop-weight’ or ‘gravity take-up’ device. Hydraulically or electrically powered automatic take-ups are also available which relay on a load-sensitive device to move the tensioning pulley in response to change in operating conditions of the belt.Belt cleaners: When transporting bulk materials that have the tendency to stick to the surface of the belt, the belt conveyors will be equipped with some kind of cleaning technique at the head end to minimize the build-up of material on snub pulleys and return idlers. Theses cleaning methods are such as rotary brushes or scrapper blades of steel or rubber, which may be spring loaded or counterweighted to bear against the surface of the belt.

4 Ways to Reduce Conveyor Belt DamageConveyor belts are both the most important and most expensive conveyor component. To help you reduce damage to your conveyor belt and the potential costly exercise of a belt replacement, we discuss below four ways to reduce belt damage.1. Appropriate Belt Type ​​The type of material and the environment of your conveying will greatly affect the service life of your conveyor belt as the specification of belt will wear more quickly if it isn’t suited to the application.  There are multiple grades of rubber conveyor belting, each of which have special properties that ensure their suitability.For example,If your conveyor requires the use of Grade A, but you instead installed a general-purpose N grade rubber belt you would find that the N grade belt would be more susceptible to wear from the abrasive material. Thus, the service life would be reduced and the belt will require replacement sooner than a Grade A belt.2. Cleaning & MaintenanceTo reduce carryback and the associated wear on the conveyor belt, it’s important to keep the belt as clean as possible during operation. Cleaning of the belt can be effectively achieved with the appropriate belt scraper, v-plows, spray bars and brush cleaners.3. Impact ProductionWhen large and heavy material impacts the conveyor belt, especially at the impact zones, damage can occur to the belt. Impact damage can include tears in the belt or, if the velocity of the impacting material is high enough, the objects can puncture holes in the belt.3.Prevention of Mis-trackingThe conveyor belt can be prone to mis-tracking for various reasons, examples include worn conveyor pulley and material build up. When the belt mis-tracks, it is prone to damage and additional wear, especially along the edge of the belt where unwanted contact with surrounding structure may occur.

In mineral processing production, the transportation of mining equipment is an important problem. There are many kinds of transportation forms of mining equipment, such as automobile transportation, railway transportation, cableway transportation, belt conveyor transportation and so on. Among them, belt conveyor transportation is a common form of transportation.Belt conveyor is divided into two types: ordinary type and special type. Special type can be divided into steel core belt conveyor, steel rope traction belt conveyor, rubber wheel drive belt conveyor, linear friction drive belt conveyor and displacement belt conveyor.Belt conveyor realizes the continuity of transportation process. It has the advantages of large conveying capacity, strong climbing performance, simple operation, safe and reliable, high degree of automation, easy maintenance and repair of equipment. Compared with automobile and railway transportation, it can shorten the transportation distance, reduce the cost and reduce energy consumption. In the mines with large mining depth, long transportation distance and large ore and rock transportation volume, high-strength belt conveyor is an ideal means of transportation.Belt conveyor and automobile or railway transportation, generally through the crushing transfer station, form a combined transportation system, to transport ore (rock) from stope to concentrator, stope to dump and so on. Crushing transfer station can be divided into three types: fixed, semi fixed and mobile. It is generally composed of ore bin, feeding, crushing and discharging devices. The technological process of combined transportation is to transport the ore (rock) from the stope to the crushing bin by car or railway, discharge the qualified block size by the crusher, and transport it to the concentrator and dump by belt conveyor.According to the nature of the conveying materials and local climate conditions, the belt conveyor shall be of open, semi open, fully closed type or only capped on the driving station. But it is necessary to ensure the normal operation of belt conveyor and the requirements of material transportation.

Pipe belt conveyor is suitable for conveying various bulk materials with density of 0 ~ 250kg / m3 under various complex terrain conditions. It is widely used in the material conveying system of electric power, building materials, chemical industry, mining, metallurgy and other industries. The main performance characteristics of tubular belt conveyor are as follows.1.Airtight conveying of materialsThe material is completely enclosed in the tubular belt, and the return belt is turned 180 degrees, so the material will not be scattered and flying, and will not be affected by the external environment. In this way, not only the external environment pollution caused by the scattering of materials is avoided, but also the external environment pollution to materials is avoided. It can also be used in places requiring thermal insulation.2.The conveyor can be arranged along the space curveThe tubular belt conveyor has the ability of small radius bending, which can realize three-dimensional spiral bending arrangement. The conveyor does not need to set up transfer point, and also saves the required additional drum, hopper, dust removal equipment, transfer station civil engineering foundation and power distribution, so as to save the cost of transfer station and multi drive, reduce the failure point and material loss, and avoid the maintenance problem of transfer point.3.Large angle conveying capacityThe friction coefficient between material and belt is much larger than that of ordinary belt conveyor, which can realize large angle transportation, reduce conveying length, save space position and reduce equipment cost. The larger the inclination angle, the shorter the conveyor length, the more economical.4.The width of the middle conveying section is smallThe frame of tubular belt conveyor is only 1 / 2 of the width of belt. In the case of the same conveying capacity, the cross-section width of the round pipe part of the conveyor is only about 1 / 2 of that of the ordinary conveyor. In the case of long-distance transportation, it can greatly save the area and space, and reduce the cost of the trestle.

Advantages of  mobile belt conveyor 1.The mobile belt conveyor can be used in any place, no matter indoor or outdoor, it can work normally to minimize the operation in rainy days.2.The mobile performance is good, under normal circumstances, an adult man to move without any problems. It can be used in loading, material transfer and other occasions directly, and also suitable for logistics loading and unloading.3.Easy to operate, the machine is equipped with a control box, including a main control switch, a lifting switch. No need to be on duty, the machine can be started.

The characteristic of the wire rope traction belt conveyor is that the wire rope traction belt conveyor is a powerful belt conveyor. The characteristic of this kind of conveyor is that the steel wire rope is used as the traction mechanism, and the belt only plays a bearing role, not the traction force.The components of the belt conveyor are mainly composed of the transmission device, the upper and lower rollers, the intermediate frame, the reversing roller, the tensioning device, the cleaning device and the safety protection device.Belt conveyor is widely used in household appliances, electronics, electrical appliances, machinery, tobacco, injection molding, post and telecommunications, printing, food and other industries, assembling, testing, debugging, packaging and transportation of objects Wait. Line conveying can be selected according to process requirements: ordinary continuous operation, rhythm operation, variable speed operation and other control methods; line body is selected according to local conditions: linear, curved, slope and other line-type conveying equipment includes: belt conveyor, also called belt type Conveyor or belt conveyor, etc., are economical logistics conveying equipment that is indispensable for forming a rhythmic assembly line. Belt conveyors can be divided into heavy belt conveyors such as mining belt conveyors according to their conveying capacity, and light belt conveyors such as those used in electronic plastics, food, light industry, chemical and pharmaceutical industries. The belt conveyor has strong conveying capacity, long conveying distance, simple structure and easy maintenance, and can conveniently implement programmed control and automatic operation. The continuous or intermittent movement of the conveyor belt is used to transport articles under 100KG or powdery or granular articles. It runs at high speed, smoothly, with low noise, and can be transported up and down.SKE machinery is focusing on various belt conveyors design and manufacturing, please feel free to contact us if you have any interest.

The multi-point drive belt conveyor is also known as the middle power multi-point drive belt conveyor. In addition to the pulley drive device at the head of the machine, several sets driving devices are set in the middle of the conveyor. The characteristic of multi-point belt conveyor is that it can reduce the traction force of conveyor belt, and use ordinary braided conveyor belt to achieve the purpose of increasing the conveying distance.There are two types of multi-point drive belt conveyor: (1) linear friction multi-point drive belt conveyor: it is to add one or more ordinary belt conveyors (auxiliary machines) under the original conveyor (host) belt to support the synchronous operation of the main conveyor belt, and reduce the traction force of the main conveyor belt by friction; (2) the multi-point drive belt conveyor with intermediate drum unloading type: it is installed in the A driving point is added in the middle of the original belt of a telescopic belt conveyor to reduce the traction force of the belt.

Belt conveyors, as a bulk material handling solution, are now more and more popularly used in many different fields;  How to install a belt conveyor is quite important, SKE machinery company as professional belt conveyor manufacturer and supplier in Shanghai,China, has many years experience in installation engineering; The installation of belt conveyor is generally carried out in the following stages. 1. The installation of the rack frame of the belt conveyor starts from the head frame, then the middle frames of each section are installed in sequence, and finally the tail frame is installed. Before installing the rack, the center line must be drawn over the entire length of the conveyor. Since keeping the center line of the conveyor in a straight line is an important condition for the normal operation of the conveyor belt, it is necessary to install each section of the rack. Align the center line, and at the same time set up a rack to level it. The allowable error of the rack to the center line is ±0.1mm per meter. However, the error of the center of the frame over the overall length of the conveyor shall not exceed 35mm. After all the single sections are installed and identified, the single sections can be connected.2. When installing the drive device, you must pay attention to make the drive shaft of the belt conveyor perpendicular to the center line of the belt conveyor, so that the center of the width of the drive pulley coincides with the center line of the conveyor, and the axis of the reducer and the drive axis parallel. At the same time, all shafts and rollers/pulleys should be leveled. The horizontal error of the shaft is allowed within the range of 0.5-1.5 mm according to the width of the conveyor. While installing the drive device, you can install the tail wheel and other tensioning devices. The roller/pulley axis of the tensioning device should be perpendicular to the center line of the belt conveyor.3,Install the idlers.  After the frame, transmission device and tensioning device are installed, theidler racks of the upper and lower idlers can be installed, so that the conveyor belt has a curved arc that changes slowly, and the distance between the idler racks in the turning section is normal. 1/2～1/3 of the idler frame spacing. After the idler is installed, make its rotation flexible and brisk.4. The final alignment of the belt conveyor In order to ensure that the conveyor belt always runs on the center line of the idler and pulley, the following requirements must be met when installing the idler, frame and pulleys:1) All idlers must be arranged in a row, parallel to each other, and kept horizontal.2) All the pulleys are arranged in a row, parallel to each other.3) The supporting structure frame must be straight and keep horizontal. For this reason, after the installation of the drive pulley and the supporting idler frame, the final correction should be made to the center line and level of the conveyor.5. Then fix the rack on the foundation or floor. After the belt conveyor is fixed, feeding and unloading devices can be installed.6. Hanging the conveyor belt When hanging the conveyor belt, first spread the conveyor belt strips on the idlers of the unloaded section, enclose the driving pulley, and then lay them on the idlers of the heavy-duty section. The 0.5-1.5 tons hand winch can be used for hanging the belt. When tightening the belt for connecting, the pulley of the tensioning device should be moved to the limit position, and the trolley and the spiral tensioning device should be pulled toward the transmission device; and the vertical picking device should move the pulley to the top . Before tightening the conveyor belt, the reducer and motor should be installed, and the braking device should be installed on the inclined conveyor.7. After the belt conveyor is installed, a non-loading test  is required. During the test, pay attention to whether there is deviation phenomenon in the operation of the conveyor belt, the operating temperature of the driving part, the activity of the idler during operation, the degree of contact between the cleaning device and the guide plate and the surface of the conveyor belt, etc. Make necessary adjustments, and the test with load can be carried out after all parts are normal. If a screw-type tensioning device is used, the tightness must be adjusted again when running the test machine with load.

A tubular belt conveyor system includes a conveyor belt having a cross-sectionally closed, curvilinear, tubular configuration including a zone of overlapping edge portions. A plurality of support and guide assemblies for the conveyor are situated along the conveyor path. Each assembly includes a plurality of support and guide rollers held about the cross-sectionally closed conveyor belt in a contacting relationship therewith. In each assembly one roller is in engagement with the cross-sectionally closed conveyor belt at the edge overlap. The closed tubular configuration in each length portion of the conveying path has an oval cross section. The support and guide rollers force the conveyor belt into the closed tubular configuration of oval cross section. The first support and guide roller of each assembly is settable onto the zone of overlapping edge portions.There are some advantages and disadvantages for the tubular pipe belt conveyors, SKE team will show you more as below:Advantages:1) The conveyor belt selected for tubular pipe belt conveyor is similar to the general conveyor belt, so it is suitable for the user's habits and is easy to be accepted by the user. The conveyor belt selected for other types of enclosed conveyor belt conveyors is not the same as the general belt type, which has big difference. 2) It can prevent external debris from being mixed into the transported materials, and can also prevent the materials from being exposed to rain or sun.  It can complete the carrying section and the return section completely closed and transported. In principle, it can avoid material leakage and spilling, which can meet environmental protection requirement.    3) It can complete flexible layout planning, can complete small-radius three-dimensional space turning, avoid the establishment of intermediate transfer stations and the capital and maintenance costs of corresponding auxiliary equipment!  Especially suitable for transportation lines in a small space or a messy environment such as obstacles Construction shortens the transportation interval and reduces the total cost of the project.   4) It can complete transportation at a large inclination angle. Generally, trough-angle belt conveyors can only increase the viewpoint to about 18° at most. However, because the conveying belt encloses the materials in the tube, the pipe belt conveyor increases  the friction between the material and conveying belt, and the transportation viewpoint can be further improved. The round tube belt conveyor that has been put into normal use can reach a maximum of 30° inclined transportation, and there is also a proposal to choose a round tube belt conveyor for vertical elevation. 5) It can easily complete the two-way material transportation, because the tubular tube belt conveyor uses closed tubes for transportation in the load-bearing section and the return section. If the feeding point is installed in the return section, the return section can still transport materials, and the intermediate feeding can be completed by opening and closing the conveyor belt at any point6) The width of the frame is small, and the tubular pipe belt conveyor uses a circular cross-section to transport materials, and obtains the same effective transport area with a lower bandwidth. According to statistics, in the case of the same transportation section, the use of tube pipe belt conveyors can be reduced by 1/3 of the original in the width direction, and then reduce the space requirement during civil construction, reduce the consumption of structural materials such as steel, and reduce related costs and Working hours. Disadvantages 1) The raw materials and production requirements are relatively high. Although the conveyor belt selected for the tubular pipe belt conveyor is still a flat conveyor belt, it is necessary to guide the conveyor belt into a round tube shape and require sealing at the same time, so the margin of the conveyor belt is different from the general belt conveyor . In order to guide the conveyor belt into a circular tube shape and maintain the circular tube shape during the operation of the conveyor, the rigidity requirements of the conveyor belt are also different, which requires special consideration in planning and production. 2) Because the material is enclosed in the tube during the operation of the conveyor, the squeezing force between the material and the conveyor belt is increased, so the operating resistance coefficient of the conveyor is larger than the general belt conveyor.3) Compared with general belt conveyors, the conveying volume is small under the same belt speed and bandwidth. For example, when the bandwidth is 1000mm, the maximum cross-sectional area of the material of the universal belt conveyor is 0.0944m2. The idler groove angle is 35° and the accumulation angle is 10°, while the material cross-sectional area of the tube belt conveyor is only 0.0409m2.4) Design calculations are troublesome. Because the structure of the tube belt conveyor is more messy than the general belt conveyor, its planning and accounting are more messy. In particular, it should be pointed out that the running resistance of the tube belt conveyor increases with the increase of the running speed, and it is difficult to select the running resistance coefficient in the practical planning.5) From the structural point of view, the "tubular pipe belt conveyor will not cause the belt deviation problem like the general belt conveyor, but there is a problem of changing the conveyor belt. In severe cases, the edge of the conveyor belt will enter the two idlers. In the gap, causing damage to the conveyor belt.

Belt conveyors are widely used in underground, road transportation systems, open-pit mines and mineral ore processing plant, for horizontal or inclined transportation. Regarding upward inclined transportation, the maximum allowable inclination anlge β is caculated for different materials. If the β value exceeds the specified value, due to insufficient friction between the material and the conveyor belt and between the material and the material (that is, the inclination angle is greater than the friction angle), the material will slide, roll down, and fall, which will affect the normal operation of the conveyor belt and reduce the conveying capacity.Belt conveyor is a friction-driven continuous material conveying machine. By using it, a material conveying process can be formed between the initial feeding point and the final unloading point on a certain conveying system. It can not only transport scraps, but also transport finished products. In addition to pure material transportation, it can also meet the technological requirements in the production process of various industrial enterprises to form a rhythmic assembly line. Therefore, belt conveyors have been widely used in modern industrial enterprises.The belt conveyor has excellent performance: first of all, it runs reliably. Belt conveyors are used in many important production devices that require continuous operation, such as coal transportation in power plants, bulk material transportation in steel and cement plants, and port ship loading and unloading. If you shut down under these conditions, the loss will be huge. When necessary, the belt conveyor can work continuously.According to the requirements of the technological process, the belt conveyor is very flexible and can receive materials from one or   several points. It can also discharge material from multiple points or sections. When the belt conveyor is sent to the conveyor belt at multiple points at the same time (such as the conveyor under the coal bunker of the coal preparation plant) or is conveyed to the conveyor at any point along the length of the belt conveyor through uniform feeding equipment, it becomes the main trunk line.

Idlers are used to support the conveyor belt and the materials on the conveyor belt to ensure the stable operation of the conveyor belt. Different types of idlers can be used for different industry applications.  So what are the types of belt conveyor idlers? There are many different types conveyor idlers which can be used in many different application; SKE machinery will show you in detail.According to the classification of idlers’ manufacturing materials, conveyor idlers can be divided into the following types: rubber idlers, ceramic idlers, nylon idlers and insulation idlers.1. Ceramic idler:  it can be used in extremely harsh environment, no static electricity, No sparks when rubbing, and is very suitable for coal-well and other operations, and it can effectively prevent belt deviation, fork pulling, heating and fire. 2. Nylon idler: no necessary oil injection, corrosion resistance, anti-aging, acid and alkali resistance, light weight, high waterproof performance, it is suitable for different occasions in the dust environment of material delivery.The conveyor idlers can be known as the below types according to the function classification;1. Troughed idler: the troughed idler is generally composed of two side idlers and a flat idler, with a groove angle of 30-35 degrees. For a detachable belt conveyor, the three idlers are hinged to each other, hence it is called the articulated idler. It is mainly used for carrying branch conveying bulk materials.2.Parallel idlers: the parallel idler is generally one long idler; parallel upper idlers, which are used to carry the branch transportation of articles. It is installed at the lower end of the bearing pressure, so it is called the lower idler. The parallel lower idler is used for the return branch to support the conveyor belt.3.Self-aligning idler: used to adjust the deviation of conveyor belt, prevent hunting and ensure the stable operation of conveyor belt. The front inclined groove roller also plays the role of Self-aligning and centering.4.Impact idlers: installed under the loading section of the conveyor to reduce the impact on the conveyor belt and extend the service life of the conveyor belt.5. Return idler: it is used to support the conveyor belt in the lower section. There are parallel, V-shaped and anti-v-shaped rollers. V-shaped and anti-v-shaped idlers can reduce the possibility of deviation of the conveyor belt. When V-shape and anti-v-shape are used together to form diamond section, it can effectively prevent the belt from daviating.6. Cleaning idler: comb idler and spiral idler can remove the sticky material on the conveyor keep the belt surface clean.7. Transition idler: it is installed between the pulley and the first group of idlers. The conveyor belt can be used to gradually form a groove or spread the material from the groove. 

Long-distance belt conveyors range from a few kilometers to tens of kilometers. In the design process of long-distance belt conveyors, it is particularly necessary to pay attention to the economy and flexibility of the entire conveyor system. So what are the design considerations for long-distance belt conveyors? Some unremarkable problems in belt conveyors used in several kilometers in general, such as the selection of idler diameter, spacing and quantity, become a big problem in long-distance belt conveyor. Conveyor belt selection for Long-distance belt conveyor:The cost of the conveyor belt of the long-distance conveyor accounts for more than 1/2 of the total cost of the belt conveyor, so it is very important to choose the appropriate conveyor belt. The safety factor and the joint method directly affect the cost of the entire machine.Long-distance conveyor drive mode selection:Whether the driving mode is single drive, multi-point multi-drive, or intermediate friction drive, it is of great significance to decide whether to reduce the strength of the conveyor belt . If single head drive is selected, the power of the head is as high as several kilowatts, a high-voltage motor must be used, and the strength of the conveyor belt must be a steel rope core or an aramid core. If the intermediate friction drive method is selected, the belt conveyor can be up to tens of kilometers, and high-strength nylon belt or aramid belt should be used. In addition, whether the motor is a variable-speed DC motor or a hydraulic coupling plus an AC motor, the two prices differ greatly.Long distance belt conveyor idler selection:The selection of idlers, especially the diameter and spacing of idlers for long distance belt conveyors is more important. The total weight of the idlers accounts for about 30% of the weight of the whole machine. For example, if the distance between the idlers is changed from 1.5m to 2m, or the diameter of 133mm is changed to a larger level, it will determine the cost of the idlers and reduce the running resistance coefficient. For example, the 20km belt conveyor of Cana Iron Mine in Australia was changed from 133mm to 178mm diameter idlers , and the distance between idlers was changed from 1.75m to 2m,As a result, the running resistance coefficient decreased from 0.03 to 0.0098;

The idler, which is one of the core components of belt conveyors, will eventually be installed in various conveying equipment. The installation of conveyor idlers requires calculation of the spacing distance between the idlers. So how to confirm and design the spacing distance between the idlers of belt conveyors? The spacing distance between the idlers should be designed to take into account various factors such as the sag of the conveyor belt, the bearing capacity of the idler bearings, the charactor of the material, the width of the conveyor belt, the inclination of the conveyor, and the actual operation. The method for determining the spacing distance between the idlers of the belt conveyor is described in detail below.Table of common idler distances between carrying idlers and return idlers common idler spacing distance tableBulk density (t.m-3)Spacing distance of carrying idlers mmSpacing of return idlers  mm12003000 1.610003000How to confirm the distance between the idlers of the belt conveyor?idler spacing Selection for bulk material belt conveyorThe belt conveyor is used to transport bulk materials has a distance between the supporting idlers about 0.8-1.5m and a distance of the return  idlers  of the rollers of about 2-3m.Idlers spacing Selection for overland belt conveyorFor long-distance belt conveyors (overland belt conveyor), the method of increasing the spacing between the idlers is generally adopted some manufacturers to reduce the total resistance. The spacing distance between the upper carrying idlers can be increased to 2.5 to 5.0m, and the spacing distance between the lower return idlers can be increased to 5 to 10m. However, this design must be based on sufficient dynamic analysis to ensure reliable conveyor operation.Idlers spacing Selection finished goods conveyor Generally speaking, when conveying finished goods with a weight of more than 20kg, the distance between the idlers is changed not more than 1/2 of the length of the finished goods (along the conveying direction). The distance between the idlers of the finished goods less than 20kg can be 1m.Dtue to the different tension and volume of each point of the belt conveyor, the maximum allowable distance between the idlers is also different, and the arrangement of the idlers at equal intervals does not consider the specific conditions of each conveyor part, it can meet the real application by using different spacing idlers on the same belt conveyor. Unequally spaced belt conveyors can effectively reduce conveyor investment costs.SKE is a professional supplier of complete sets of belt conveyor system solutions. We provide complete sets of belt conveyor system design, installation, commissioning, maintenance and other services. At the same time, it provides the supply service of accessories for conveyor equipment motors,pulleys, idlers, and conveyor belts.