Conveyor Belt System
28th May 2019
The efficiency of CHP is depending upon availability and reliability of conveyor belt system. A single conveyor can run at close to 100% reliability, but as the number of conveyor increases, the reliability of the conveyor belt system is mostly depend upon its control system. The control system has sensing device like zero speed sensing, receiving conveyor position sensing. It has also facility for selection to operate conveyor avoiding control system i.e. manual run mod. In some CHP there is facility of three type of selection. One is for start or stop plant with auto mode. In this mod each conveyor will operate sequentially after selecting the stream. Second which is in all CHP for start or stop of plant with manual mod. Third is operating the system without any protection or interlock.
Operating Principle Of Industrial Conveyor Belt System
Before starting conveyor belt system it is necessary to start first receiving conveyor and then start feeding conveyor i.e. operating logic is from down stream to upstream. For stopping of conveyor system the operation will be opposite i.e. from upstream to down stream. So it is necessary if any conveyor is stopped in the system all the upstream conveyor should stop automatically. The existing system takes care of this logic. This is known as conveyor sequential operation. If due to any problem the rotation of conveyor becomes slow or towards zero it’s necessary to stop the conveyor. This is known as zero speed protection. Existing system takes care of it and stops the conveyor and further stop the upstream system sequentially. The dust suppression system should be operating when there is coal flow. This is done by sensing via simple mechanical under belt switch. The measurement of coal flow is done by using load cell.