RECOVERY CONTROLLER USING SWITCH FOR WET GRAVITATIONAL SORTING MACHINE WITH UNDER-SCREEN AIR CHAMBER

摘要

PROBLEM TO BE SOLVED: To provide a recovery control technique in a wet gravitational sorting machine with an under-screen air chamber, which can execute excellent classification irrespective of the type of collected substances.;SOLUTION: A recovery controller comprises a proximity switch installed in a specified position within a classification chamber or a plurality of proximity switches installed with an interval in the vertical and/or horizontal direction within the classification chamber and an arithmetic operation control unit connected with the proximity switch. The arithmetic operation control unit is provided with a chattering judgment circuit for outputting a control signal to activate a motor when an ON signal is transmitted twice from the proximity switch within a chattering judgment time set in advance.;COPYRIGHT: (C)2008,JPO&INPIT