The buffer roller is used to reduce the impact of the blanking on the conveyor belt at the receiving place of the belt conveyor, and is mainly developed for a corrosive environment such as a coal washing plant, a coking plant and a chemical plant, and has the toughness of ordinary Metals more than 10 times the life expectancy of five times the traditional column shoes, corrosion-resistant flame retardant, anti-static, light weight and other characteristics, are widely used in mining. Roller-specific polymer materials, its mechanical properties similar to bronze, has good wear resistance, but also has good self-lubricating properties, not to hurt the belt. Anti-corrosion buffer roller superior performance. Roller body and seals are made of polymer materials, corrosion-resistant. Used in corrosive occasions, the service life can reach more than 5 times of ordinary roller.
Buffing roller light weight, small rotation inertia. Roller-specific polymer materials, light weight, the proportion of steel is one-seventh, with this material made of roller, the weight is about one-half of ordinary roller, rotary inertia is small, between roller and belt Small friction.
The cushioning roller is installed below the receiving section of the conveyor to reduce the impact of the material on the conveyor belt when the material is discharged, so as to prolong the service life of the conveyor belt. The spacing of the buffer rollers is generally 100-600mm.
First, the installation of buffer roller in the installation to improve the density; Second, frequent inspections, timely replacement of damaged rollers. It is recommended to install a buffer air locker for the conveyor belt with larger drop gap, and replace the buffer roller with a buffer bed. In the purchase of cushioning roller according to the characteristics of what are the points to note: the amount of roller radial runout, roller flexibility, the amount of axial movement, roller dust performance, waterproof performance, roller bearing capacity, Impact resistance roller and so on.
(1) buffer roller temperature protection
Belt conveyor belt and friction roller so that the temperature exceeds the limit, close to the drum mounted detection device sends over-temperature signal, the receiver receives the signal, after 3s delay, so that the implementation of some action, cut off the motor power supply, automatic conveyor Stall, play a role in temperature protection.
(2) roller speed protection
If the conveyor failure, such as motor burnout, mechanical transmission part of the damage, the belt or chain pull off, belt slippage, etc. installed in the passive conveyor conveyor accident sensor SG in the magnetic switch can not be closed or can not be closed at normal speed At this time, the control system will reverse the time characteristic by a certain delay, the speed protection circuit to work, so that the implementation of part of the action, cut off the motor power supply to prevent the accident from expanding.
(3) Buffer roller coal bunker protection
In the coal bunker, two coal-level electrodes are set in the coal bunker. Since the coal bunker can not set coal when there is no vacant car, the coal level will gradually increase. When the coal level rises to the upper electrode, the coal level protection action starts from the first belt conveyor , Each conveyor due to tail pile of coal in turn parking.
