FIVE-LINE TWO-POSITION VALVE-TYPE PNEUMATIC DISTRIBUTOR Russian patent published in 2004 - IPC

Abstract RU 2241144 C2

FIELD: pneumatic control systems.

SUBSTANCE: proposed pneumatic distributor has housing, two spring-loaded valves with four "valve-seat" type shutoff elements arranged in parallel, two valve control pneumatic devices and system of working channels and pneumatic lines connecting valves and actuating mechanism. Through stepped cylindrical bore with minimum step difference is made in housing for each valve. Disconnecting bushing with outer ring groove is secured by means of plug in larger step. Said ring groove connected radial channels with inlet space. Bushing is provided with seals on outer seat surface and end face flat seats installed concentrically and contacting with flexible ring seals of shutoff elements, one of which is arranged from side of smaller step bore and is made in form of self-aligning differential piston movably secured on valve rod by cylindrical pin with ring clearance for simultaneous contact with surface of cylindrical bore and seat surface of disconnecting bushing. Space between steps of bore in housing limited by disconnecting bushing and different piston in one of valves communicates with pressure channel.

EFFECT: simplified design.

1 dwg

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RU 2 241 144 C2

Authors

Red'Ko P.G.

Tarkaev S.V.

Ambarnikov A.V.

Chugunov A.S.

Nakhamkes K.V.

Volkov A.V.

Dates

2004-11-27—Published

2000-05-12—Filed