The carrying idler is a special conveyor idler Impact idler buffer carrying idler used in belt conveyor by where the slow blanking the impact on the conveyor belt, mainly for coal, coking plant, chemical plant and other corrosive environment and developed a kind of carrying idler, it itself has the toughness is 10 times more than ordinary metals, life expectancy of traditional column shoes five times, corrosion resistant flame retardant, antistatic, light weight and other characteristics, widely used in mining. High polymer material for carrying idler body of idler, its mechanical property is similar to bronze, has good wear resistance, and has good self-lubricating property, and does not hurt the belt. Cushioning carrying idler has superior anti-corrosion performance. Roller body and seals are made of high polymer materials, corrosion resistant. When used in corrosive environment, the service life can reach more than 5 times of the ordinary carrying idler. Carrying idlers are light in weight and have little rotation inertia. The weight of the special polymer material for idlers is light, and its specific gravity is one seventh of the steel. The idlers made of this material are about one half of the weight of the ordinary idlers, with small rotational inertia and small friction between idlers and belts.
The cushion idler is installed in the lower part of the guide trough below the receiving section of the conveyor to reduce the impact of the materials on the conveyor belt during blanking, so as to extend the service life of the conveyor belt. Buffer carrying idler spacing is generally 100-600 mm. The carrying idler is a rubber ring added on the basis of the ordinary steel carrying idler, which can protect the fart greatly.
Buffer carrying idler in the installation of the first is to improve the density of installation; The second is to regularly check and replace the damaged idlers in time. It is recommended to install buffer lock air device for the conveyor belt with large blanking difference, and replace buffer idler with buffer punch press. According to the characteristics of the cushioning carrying idler, the following points for attention are put forward: radial runout of the carrying idler, flexibility of the carrying idler, axial flow momentum, dust-proof, water-proof, axial bearing performance of the carrying idler, impact resistance of the carrying idler, etc.
Analysis of damage causes of cushion idlers:
1. Because of the large dust at the blanking point, the poor sealing performance of the buffer supporting carrying idler is easy to be polluted and cause damage to the bearing;
2, the buffer rubber ring is basically produced by recycled rubber, not only poor elasticity, wear resistance, tear resistance, aging resistance are very poor, impact hours, service life is only about 1 year, when the impact is large, more than ten days will break off, causing serious damage to the tape. IN the case of the helpless, a lot of belt machines began to use expensive buffer presses.
Cushioning carrying idler protection
(1) Buffer carrying idler temperature protection
When the temperature exceeds the limit due to the friction between the belt and the carrying idler of the belt conveyor, the detection device installed next to the carrying idler will send an overtemperature signal. After receiving the signal, after 3s delay, the receiver will make the execution part act, cut off the power supply of the motor, and the conveyor will stop automatically, thus playing a role of temperature protection.
(2) Speed protection of idlers
If there are obstacles of the conveyor, such as motor burned, mechanical transmission parts damage, belt or chain snap, belt creep, etc., installed on the conveyor passive parts of accident sensor magnetic control switch in the SG cannot be closed or not according to normal speed closed when the control system will be effected according to the inverse time characteristics after a certain delay, speed protection circuit, make the part of the action, to cut off the motor power supply, in order to avoid accidents.
(3) Protection of coal level in the coal bunker with buffer supporting carrying idler
Two high and low coal level electrodes are set in the bunker. When the bunker is unable to draw coal due to no empty truck, the coal level will gradually rise. When the coal level rises to the high electrode, the coal level protection action will start from the first belt conveyor, and each conveyor will stop successively due to the coal pile at the tail of the engine. How to choose the right cushion idler:
The application of belt conveyor is very important. It supports the belt and bears the weight of materials. Thus, it can be seen that the role of the idler is very important. Therefore, the structural performance of idlers is more important.
The weight of the carrying idler made of this material is about half that of the ordinary parts of the carrying idler. The rotation inertia is small, and the friction between the carrying idler and the belt is small, which can effectively reduce the friction between the carrying idler and the belt. Reducing the distance between idlers can reduce the simulated friction coefficient, but the total value of resistance will increase. Do not increase the density of idlers except at the unloading point for the outer bearing section of the protective tape. IN addition, the rubber ring of the cushion idler is abrasion resistant and has a long service life. conveyor idler body special polymer material, its continuous performance is similar to bronze, has good wear resistance, and has good self-lubrication performance, does not hurt the belt. There are also many types of carrying idlers, such as spring plate, buffer ring, strong buffer, and so on. So, at the time of the choice must choose appropriate. When selecting the idler, attention should be paid to the radial runout of the idler, the flexibility of the idler, and the axial channeling momentum. In the place where the difference of material is more than 6 meters, we should choose the cushion idler, which can not only effectively reduce the impact and wear of belt material, but also prevent the belt from being torn by hard objects.
It can be seen that the idler is very important to the belt conveyor. Select a good carrying idler, can ensure the normal production, can better improve efficiency.
We, Henan Excellent Machinery Co., Ltd, are a professional manufacturer of conveyor idler. We adopt advanced technology and strict quality control to make sure that the idler is made in conformity with the specifications. We produce a variety of idlers for belt machines, including ordinary steel idlers, carrying idler, return idler, Impact idler, Self-aligning idler, Comb idler, Spiral Idler and so on. To learn more, please visit our website: www.exctmach.com.