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China Suppliers Factory Rubber Buffer Idler Roller for Corrosive Environments - Impact Resistance and Durability
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China Suppliers Factory Rubber Buffer Idler Roller for Corrosive Environments - Impact Resistance and Durability
Introducing the Impact Idler, an innovative product designed specifically for corrosive environments like coal washing plants, coking plants, and chemical plants. Manufactured in China by leading suppliers, this idler effectively reduces the impact of falling materials at the feeding point of belt conveyors, ensuring the longevity and efficiency of your conveyor system, Crafted from a specialized polymer material, the Impact Idler boasts more than 10 times the toughness of ordinary metals and offers exceptional corrosion resistance, flame retardancy, and anti-static properties. With a lifespan up to five times longer than traditional column shoes, this lightweight component is ideal for mining applications, The roller body possesses mechanical properties similar to bronze, delivering outstanding wear resistance and excellent self-lubricating performance that safeguards your conveyor belt. With superior anti-corrosion capabilities, the roller body and sealing components are made entirely from advanced polymer materials. When deployed in corrosive settings, the service life of the Impact Idler can exceed five times that of standard rollers, making it a reliable choice for businesses seeking durability and performance. Explore our factory's offerings and enhance your operations with the Impact Idler today
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:
Ø 89 mmØ 108 mmØ 133 mmØ 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 RunoutRoller FlexibilityAxial DisplacementDust & Water ResistanceAxial Bearing CapacityImpact 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 material are buffer rollers made from, and why does it matter?
Buffer rollers are made from a specialized polymer material with a specific gravity of about one-seventh that of steel. This results in rollers that weigh approximately half as much as ordinary steel rollers, providing low rotational inertia and reduced friction between the roller and the belt — improving efficiency and reducing wear.
Q
What is the recommended spacing between buffer rollers?
The spacing between buffer rollers is generally 100 to 600 millimeters. The exact spacing depends on the conveyor belt width, the drop height of materials, and the intensity of the impact load at the receiving section.
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 conveyors with belt widths of 500mm–1400mm are: Ø 89mm, Ø 108mm, Ø 133mm, and Ø 159mm. As wide belt conveyors become more common, larger diameters are increasingly being used.
Q
What should I check when purchasing buffer rollers?
When selecting buffer rollers, you should evaluate six key characteristics: radial runout of the roller, flexibility of the roller, axial displacement tolerance, dust and water resistance, axial bearing capacity, and impact resistance. These factors directly affect the service life and performance of the roller in real-world operating conditions.
Q
How does temperature protection work on a buffer roller system?
A detection device mounted close to the conveyor drum monitors operating temperature. If the drum temperature exceeds the set limit due to belt friction, an overtemperature signal is triggered. After a 3-second delay, the control system cuts power to the motor and stops the conveyor automatically to prevent damage.
Q
What happens when the coal bunker reaches a high coal level?
When coal in the bunker reaches the high-level electrode, the coal level protection system is activated. Starting from the first belt conveyor in the chain, each conveyor is stopped one by one in sequence to prevent coal from stacking further at the tail of the machine and causing equipment damage or overflow.
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