Apparatus and method for controlling the rotary airlocks in...

Details Apparatus and method for controlling the rotary airlocks in... Apparatus and method for controlling the rotary airlocks in...

B - Operations, Transporting

65

G

B65G 29/00 (2006.01) B65G 47/74 (2006.01) C10B 33/12 (2006.01) C10L 5/00 (2006.01)

Patent

CA 2178682

An improvement to a coal processing system where hard materials found in the coal may cause jamming of either inflow or outflow rotary airlocks, each driven by a reversible motor. The instantaneous current used by the motor is continually monitored and compared to a predetermined value. If an overcurrent condition occurs, indicating a jamming of the airlock, a controller means starts a "soft" reverse rotation of the motor thereby clearing the jamming . Three patterns of the motor reversal are provided .

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