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China Suppliers Factory Rubber Buffer Idler Roller for Corrosive Environments in Mining and Processing Industries
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China Suppliers Factory Rubber Buffer Idler Roller for Corrosive Environments in Mining and Processing Industries
The Impact Idler is an innovative solution specifically designed for harsh environments such as coal washing plants, coking plants, and chemical facilities. Manufactured by top China Suppliers, this idler is strategically placed at the feeding point of belt conveyors to mitigate the impact of falling materials, protecting the conveyor belt from damage, Featuring over ten times the toughness of conventional metals and five times the lifespan of traditional column shoes, this product offers exceptional corrosion resistance, flame retardancy, and anti-static properties, all while being lightweight, Our advanced polymer material, crafted for the roller body, exhibits mechanical properties comparable to bronze, outstanding wear resistance, and excellent self-lubricating performance—ensuring that the belt remains intact. The buffering roller also boasts superior anti-corrosion capabilities, as both the roller body and sealing components are made from durable polymer materials, In corrosive settings, this Impact Idler from our factory can achieve a service life that exceeds five times that of standard rollers, making it an ideal choice for mining and heavy industrial applications. Choose our Impact Idler to enhance the efficiency and longevity of your conveyor systems
The buffer roller is lightweight and has low rotational inertia. The specialized polymer material for rollers is lightweight, with a specific gravity of one seventh that of steel. Rollers made from this material weigh about half of ordinary rollers, have low rotational inertia, and low friction between rollers and belts.
Purpose
Buffer rollers are installed below the receiving section of the conveyor to reduce the impact of materials on the conveyor belt during material dropping, thereby extending the service life of the conveyor belt. The spacing between buffer rollers is generally 100–600 millimeters.
Standard Diameter Parameters
According to the Chinese national conveyor industry standards, there are four standard types of buffer roller diameters for belt conveyors with a belt width of 500mm–1400mm:
⌀ 89 mm
⌀ 108 mm
⌀ 133 mm
⌀ 159 mm
With the emergence of wide belt conveyors, the diameter of buffer rollers has also shown an increasing trend.
Installation and Selection
In terms of installation, the buffer roller is designed to increase the density of installation. It is also important to regularly inspect and replace damaged rollers in a timely manner. For conveyor belts with large drop heights, it is recommended to install buffer air locks and replace the buffer rollers with buffer beds.
In terms of purchasing, the following precautions should be taken based on the characteristics of the buffer roller:
🔄 Radial Runout
🌀 Roller Flexibility
↔️ Axial Displacement
💧 Dust & Water Resistance
⬆️ Axial Bearing Capacity
💥 Impact Resistance
Protection
1
Buffer Roller Temperature Protection
When the temperature of the belt conveyor drum exceeds the limit due to friction with the belt, the detection device installed closely to the drum sends an overtemperature signal. After receiving the signal, the receiver delays for 3 seconds, causing the execution part to act, cutting off the power supply to the motor, and the conveyor automatically stops running, providing temperature protection.
2
Roller Group Speed Protection
If the conveyor malfunctions — such as the motor burning out, the mechanical transmission part being damaged, the belt or chain being pulled apart, or the belt slipping — the magnetic switch in the accident sensor SG installed on the driven part of the conveyor cannot be closed or cannot be closed at normal speed. At this time, the control system will follow the inverse time characteristic and after a certain delay, the speed protection circuit will take effect, causing the executing part to act and cutting off the power supply to the motor to avoid the accident from expanding.
3
Buffer Roller Coal Bunker Coal Level Protection
There are two coal level electrodes in the coal bunker — high and low. When there is no empty car in the bunker, the coal level will gradually rise. When the coal level reaches the high level electrode, the coal level protection will be activated. Starting from the first belt conveyor, each conveyor will stop one by one due to the stacking of coal at the tail of the machine.
Frequently Asked Questions
Q
What is a buffer roller and what is it used for?
A buffer roller is a specialized conveyor component installed beneath the receiving section of a belt conveyor. Its primary purpose is to absorb the impact force of materials dropping onto the belt, significantly reducing belt wear and extending the overall service life of the conveyor system.
Q
What are the main advantages of polymer buffer rollers over steel rollers?
Polymer buffer rollers offer several key advantages: they weigh approximately half as much as conventional steel rollers due to a specific gravity one-seventh that of steel. This results in lower rotational inertia, reduced friction between the roller and the belt, and ultimately lower energy consumption and operating costs.
Q
What are the standard diameter sizes for buffer rollers?
According to Chinese national conveyor industry standards, the four standard buffer roller diameters for belt widths of 500mm–1400mm are: ⌀ 89mm, ⌀ 108mm, ⌀ 133mm, and ⌀ 159mm. As wide belt conveyors become more common, larger diameter rollers are also being developed and used.
Q
What should be considered when selecting buffer rollers for a conveyor system?
When selecting buffer rollers, key factors to evaluate include: radial runout of the roller, roller flexibility, axial displacement tolerance, dust and water resistance, axial bearing capacity, and overall impact resistance. For conveyors with large material drop heights, it may also be advisable to replace standard buffer rollers with buffer beds for enhanced protection.
Q
How does the temperature protection system for buffer rollers work?
A detection device is mounted close to the conveyor drum. If the drum temperature exceeds safe limits due to belt friction, the device sends an overtemperature signal to a receiver. After a 3-second delay, the system cuts power to the motor and automatically stops the conveyor, preventing heat damage and potential hazards.
Q
What is the recommended spacing between buffer rollers during installation?
The recommended spacing between buffer rollers is generally between 100mm and 600mm, depending on the application and the weight of materials being conveyed. Higher-impact applications typically require closer spacing to better distribute the load and protect the conveyor belt.
Boao Rubber
