DEVICE FOR AUTOMATIC CONTROLLING OF AIR MODE OF JIGGING MACHINE Russian patent published in 1994 - IPC

FIELD: automatic control systems in mine industry. SUBSTANCE: device has valve-type pulsers provided with inlet and outlet valves, system for controlling operation of pulsers, unit for diagnosing control unit, reserve control unit and gadget for activating this unit when basic unit fails. Compressed air pressure transducers-relays for measuring pressure in collectors and receivers for controlling operation of inlet and outlet valves are brought into the device additionally, as well as control air reserve receiver and reserve air distributor mounted onto the receiver, seven valves (cocks), mounted at inputs of receivers and outputs of air distributors, control unit supply current transducers-relays, counter e.m.f. pulse detectors-relays of INLET and OUTLET valves electromagnetic coils, galvanic decoupling unit, two switches, unit for evaluation of readiness of the device, to analysis, unit for diagnosing operation of air distributors, control and signalling elements, AND gates, OR gates, NOT gates, INHIBITION gates and unit for accounting time. Continuous diagnosing may be provided due to these units brought newly into the device of operation of air distributors and electromagnetic valves. Structure redundancy and its reconfiguration may be provided for restoration of operation of the device at failures. Objective account of operation time of spare equipment may be provided, as well as blocking which prevents spare equipment to be turned at fault load. EFFECT: improved reliability of operation; improved efficiency. 3 cl, 5 dwg