Conveyor belt scraper control

摘要

A scraper control system for conveyor belt cleaning includes a pair of elongated scraper elements mounted at opposed ends to a pair of spring-biased arms. The sraper mounting arms are attached to a separate shaft at each side of the belt. Each shaft is torqued by one of an identical pair of torque activator units. Each torque activator unit includes an extensible bellows member adapted to be placed into communication with a regulated, high pressure source of water, such as mine waste water. The bellows member has a mounting are fixed relative to the frame of the conveyor and a moveable torque are connected at one end to the bellows member and fixed at a seond end to the shaft. High pressure water preferably mine waster water is regulated between 15 to 100 psig and introduced into the bellows member to cause the torque arm to exert a force on the shaft which, in turn, transmits the force through the spring-biased mounting arms to the scraper elements. A water supply line to the bellows members includes a bladder-type accumulator to dampen any shock loading effects which may be present.