Disc valve
First Claim
Patent Images
1. A disc valve, which comprises:
- (a) a housing having an inlet and an outlet, and having formed in it a disc chamber in communication with the inlet and the outlet,(b) fixed and rotatable control discs which are arranged in the disc chamber, the discs being in contact with one another via cooperating sealing faces and each of the control discs being provided with at least one control opening, the control openings of the two control discs being continuously adjustable between an aligned open position and a non-aligned closed position,(c) a device for biasing the rotatable control disc towards the fixed control disc, the biasing device comprising;
(i) a piston which acts on the side of the rotatable control disc remote from the sealing face and which extends in a cylinder bore of the housing, and (ii) a connecting line which connects an operating space of the biasing device, defined by the cylinder bore and the piston, to the outlet of the housing.
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Accused Products
Abstract
A disc valve, in which the rotatable control disc (34) is securely held against the fixed control disc (26) with limited forces even when the pressure differences are great. For that purpose, a piston (44) is integrally formed on the rear side of the rotatable control disc (26), which piston is acted upon via a housing channel (66, 72) by the pressure prevailing at the valve outlet (14). The effective pressure-loaded surface area of the piston (44) is slightly smaller than the surface areas of the rotatable control disc (34) that are acted upon by pressure passing through the fixed control disc (26).
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Citations
14 Claims
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1. A disc valve, which comprises:
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(a) a housing having an inlet and an outlet, and having formed in it a disc chamber in communication with the inlet and the outlet, (b) fixed and rotatable control discs which are arranged in the disc chamber, the discs being in contact with one another via cooperating sealing faces and each of the control discs being provided with at least one control opening, the control openings of the two control discs being continuously adjustable between an aligned open position and a non-aligned closed position, (c) a device for biasing the rotatable control disc towards the fixed control disc, the biasing device comprising;
(i) a piston which acts on the side of the rotatable control disc remote from the sealing face and which extends in a cylinder bore of the housing, and (ii) a connecting line which connects an operating space of the biasing device, defined by the cylinder bore and the piston, to the outlet of the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification