Stop: press the stop button to disconnect the operation of the coal feeder; according to the sequence of 5 × 4 × 3 × 2 × 1 × 1, successively pull out the belt conveyor and stop the operation of each belt conveyor. Emergency stop: press the emergency stop button (emergency state), the belt conveyor will be shut down immediately after power failure, and the brake will be braked; the backstop will stop.