Disk valve

Details Disk valve Disk valve

1995-05-16

1997-09-09

Rivell, John

Valves and valve actuation

Balanced valves

Rotary

251208, F16K 310, F16K 3904

Patent

active

056647611

ABSTRACT:
A disk valve for a fluid under pressure, inside a housing (10), and comprising one, fixed plate cam (26), which has one port (32). A second, rotatable plate cam (34) which also has a port (36) is mounted above the fixed disk cam (26). The ports (32, 36) are eccentric to the axis of rotation of the rotating disk cam (34) such that they can be brought from an aligned open position into a misaligned closed position by rotating the rotating plate cam (34). A pressure relief surface (44, Ae), concentric to the axis of rotation, is provided on the rotating plate cam (34) and this surface is in contact with the outlet pressure of the fluid, in the closed position at least. To compensate the tilting moment which is exerted on the rotating plate cam (34) due to the off-centre position of the port (32) in the fixed plate cam (26), a slot (74) is made in the upwards facing surface of the fixed plate cam (26) which, in its position and shape, is approximately symmetrical to the cross-sectional form of the port (32) and, for its part, is in contact with the outlet pressure, in the closed position at least.

REFERENCES:
patent: 2384318 (1945-09-01), Le Bleu
patent: 3363651 (1968-01-01), Boyd
patent: 3707169 (1972-12-01), Friedrichs

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