COMPRESSED AIR DRYING APPARATUS Russian patent published in 1997 - IPC

FIELD: compressed air drying equipment, may be used in pneumatic air-supply systems. SUBSTANCE: apparatus has distributing device for changing-over compressed air flows. Distributing device has normally open two-way pneumatic distributing valve 7 and normally closed two-way pneumatic distributing valve 8. Inlet channels 13 and 14 of valves 7 and 8 are connected with associated outlet channels 11 and 12 of five-way pneumatic distributing valve 6. Change-over control channels 15 of valves are connected with output line 16 for transmitting signal generated by control unit 9. Change-over delay throttle 10 is built in control channels 15 of five-way valve 6. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 1 dwg