Component of belt conveyors

Belt Conveyor Roller Introduction What is a belt conveyor roller?Conveyor rollers are parts of a conveyor belt which is used to move products or loose bulk goods such as coal, sand or iron ore. The conveyor rollers are part of this installation and are essential to enable transport.The conveyor belt is the carrier of the materials and passes around the pulleys and rollers as a loop. The conveyor pulleys drive the belt, tension it and guide it in the required direction.  The conveyor rollers carry the conveyor belt from drum to drum. They serve purely to support the belt.How does a conveyor roller work?Conveyor rollers are therefore an essential part of the conveyor belt. How does a conveyor roller work? As described above, the conveyor roller is responsible for supporting the conveyor belt. Because the conveyor belt revolves around the pulleysas an endless loop, the conveyor belt has an outward section and a return section.

Because the belt conveyor has the advantages of long conveying distance, large traffic volume, continuous conveying, large conveying capacity, simple structure, convenient maintenance, low cost and strong versatility, it has been widely used in mine production.Characteristics of belt conveyorBelt conveyor is an ideal transportation equipment in coal mine. Compared with other transportation equipment, it has the advantages of long transportation distance, large capacity, continuous transportation, reliable operation, easy to realize automation and centralized control. Especially for high-capacity mines, belt conveyor has become the key equipment of mechatronics technology and equipment in coal mining. Its main feature is that the fuselage can be easily retracted and retracted, with a belt storage bin, the tail can be extended or shortened with the advance of the coal mining face, and the structure is compact. It can be directly laid on the roadway floor without foundation, and the rack is light and convenient for disassembly and assembly. When the conveying capacity and distance are large, the intermediate driving device can be equipped to meet the requirements. According to the requirements of the conveying process, the material can be transported by a single machine, or by a combined horizontal or inclined conveying system for many times. According to the requirements of the technological process, the belt conveyor can receive materials from one or more points flexibly, and also incline to multiple points or several sections.Structures of belt conveyorThe universal belt conveyor is composed of conveyor belt, idler, roller and drive, brake, tension, change direction, loading, unloading, cleaning and other devices. Belt width is the main technical parameter of belt conveyor. Idler is divided into single roller, double roller and multi roller, including trough roller, flat roller, centering roller and buffer roller. The trough roller supports the load branch, which is used to transport the granular materials; The self-aligning idler is used to adjust the transverse position of the belt to avoid deviation; The buffer idler is installed at the material receiving position to reduce the impact of the material on the belt. The drum is divided into driving drum and steering drum. The driving drum is the main part of power transmission, which is divided into single drum, double drum and multi drum. The function of the tensioning device is to make the conveyor belt reach the necessary tension, so as to avoid slipping on the driving drum, and ensure the deflection of the conveyor belt between the idlers within the specified range.

In order to ensure the normal operation of the conveyor, the tensioning device is one of the indispensable devices; To know the belt conveyor tensioning device's function and select the right tensioning device for conveyor system is very important. SKE is showing you some about the tension device.Function:1. To ensure sufficient tension of the separation point of belt conveyor driving pulley, so as to ensure that the driving device relies on the frictional traction force that must be transmitted by the friction transmission to drive the conveyor to operate normally. 2. It must be ensured that the most arrogant lithium battery carrying tension must be tensioned, limit the sag of the conveyor belt between the idlers, and ensure the normal operation of the belt conveyor, so as not to cause slippage and deviation due to the slack of the conveyor belt. 3. Compensation for plastic deformation and changes in elongation of conveyor belts in transitional conditions. Because the load change will cause the conveyor belt to change in length, and the creep phenomenon will also cause the conveyor belt to elongate, so the tension force changes, and the position of the tension roller must be adjusted frequently to ensure the normal operation of the belt conveyor. 4. Make the necessary travel preparation for the conveyor belt to rejoin. Each belt conveyor has a number of joints, which may cause problems on the street at a certain time. It must be truncated and redone. At this time, it can be solved by loosening the tensioning device and rejoining.Types of the tension device1. Heavy weight take-up tensioning device:2 Screw tensioner3. Steel rope winch tensionerSKE machinery supplies ordinary belt conveyors, horizontal stacking conveyors, long-distance conveyors, cement plants, coal power plants etc belt conveyor systems and corresponding tensioning devices; For more information about the design of belt conveyors, please welcome to contact us; 

Without a tension take-up device, there would be no pressure on the drive pulley and the conveyor belt would stop or slip. How many different belt conveyor tension devices are normally used in belt conveyor, SKE machinery engineer will show you more:(1) Heavy weight tensioner The tail reversing pulley is fixed on the trolley, and the vertically suspended weight is connected to the trolley. Since the weight of the weight can be a certain value, the belt tension and tension force are constant. Compensation for the extension of the belt, but it requires a large space, a large part, and often cannot be used due to space restrictions. It is easy to use on a fixed long-distance conveyor.(2) Spiral tensioning deviceThe bearing seat of the tension pulley is installed on the movable frame. The movable frame can slide on the guide rail, and the screw rod is rotated to advance and retreat the nut on the movable frame and the movable frame together to achieve the purpose of tension and relaxation. Its structure is simple, but the stroke is too small, only suitable for short-distance conveyors, and when the belt stretches on its own, it cannot be automatically tensioned.(3) Steel rope winch tensionerThis tensioning device uses a small winch for tensioning. The winch generally uses a worm gear reducer to drive th epulley to wind the steel rope to tension the belt. The advantage of this tensioning device is its small size and high tension, so it is widely used in underground belt conveyors, but it cannot be tensioned by itself.

In order to ensure the normal operation of the cement application SKE belt conveyor, the belt conveyor tensioning device is an indispensable part of the conveyor. Its main functions are:1. Ensure that the separation point of the conveyor driving pulley of the cement application conveyor has enough tension. Thus, it can ensure that the driving device relies on the traction that must be transmitted by friction drive to drive the normal operation of the conveyor.2. Ensure the necessary tension of the minimum tension point of the bearing branch, limit the sag of the conveyor belt between the idlers, ensure the normal operation of the cement application conveyor, and avoid slipping, deviation and other phenomena caused by the relaxation of the conveyor belt.3. Compensate for the change of belt elongation under plastic deformation and transition conditions. Due to the change of load, the length of conveyor belt will change, and the creep phenomenon will also cause the extension of conveyor belt. The tension is variable. The position of tension pulley must be adjusted frequently to ensure the normal operation of cement application conveyor.4. Make necessary travel preparation for belt re- joint. Each cement application conveyor has several joints, which may cause problems at a certain time. It must be cut off and redone. The tensioning device has prepared the conveyor belt other than the load for the cement conveyor, so that the joint failure can be solved by loosening the tensioning device and re- jointing

The size of the diameter of the transmission pulley of the belt conveyor accessories directly affects the additional bending stress of the belt when passing around the pulley and the specific pressure of the belt on the pulley. In order to obtain a reasonable transmission pulley diameter, the following four aspects should be considered.1. In order to avoid excessive bending stress caused by the conveyor belt passing through the pulley, the pulley used for the steel wire core conveyor belt is generally selected according to the ratio of the diameter of the pulley to the diameter of the rope greater than 150. The radius of the pulley used for the woven core conveyor belt is the same as the canvas layer conveyor belt of the same strength.2. In order to reduce the surface specific pressure of the conveyor belt and prevent the covering rubber of the conveyor belt from falling off, the transmission  pulley should meet the requirements of the fabric core belt and the steel rope core belt.3. When the bending frequency of the conveyor belt is relatively high, the diameter of the pulley is correspondingly larger, so that the bending stress of the conveyor belt can be reduced, and the reduction of the bending fatigue life caused by it is compensated.4. In addition, in order to make the conveyor belt have the function of automatic centering when it passes around the pulley, the surface of the pulley can be made into a waist drum shape, and the diameter of the middle part is 8mm larger than the diameter of the two ends.

Different type idlers of model for different application:Ordinary idler: grain, loading and transportationTrough idler: coal, cement, power，aggregatesGroove type self-aligning idler: smelting metal,Mine, electric power, cement, chemical industry, building materials, steel plant, transportation equipment.Ground roller: applicable to mining industryStop roll, vertical roll: belt conveyorSuspend idler: applicable range belt conveyorBackstop idler: suitable for metallurgy,Mine, electric power, cement, chemical industry, building materials, steelScrew idler:1) Spiral lower idler: applicable to coal, electric power, metallurgy, chemical industry, building materials2) Spiral cleaning idler: applicable to coal mine machinery3) Two direnction spiral rubber idler: applicable object conveyor, packaging machinery, food machinery, mining equipment, othersParallel idler:1) Parallel upper supporting roller (supporting conveyor belt and material weight): parallel lower supporting roller: application scope: port transportation terminal, mine transportation, mechanical equipment2) Parallel upper center idler/ Parallel lower Center idler: scope of application to prevent belt deviationComb idler: mine, wharf, coal, power plant, coking;Tapered idler:1) Tapered upper Aligning idler: application fields: port, electric power, coal mine, machinery plant, grain transportation, chemical industry2) Tapered Lower Aligning idler: application fields: port, power, coal mine, machinery plant, grain transportation, chemical industryFriction idler: metallurgy, chemical industry, coal, building materialsFriction upper Aligning idler/Friction lower Aligning idler: applicable range conveying machineryBuffer(Impact) idler: applicable to power plant and cement plantRubber ring buffer (impact)idler: special for idlerParallel buffer (impact)idler: applicable to coal mineAdjustable groove angle double spring buffer (impact) idler set: application scope: port transport terminal, mine transport, mechanical equipment;