Valve, in particular pressure reducing valve
First Claim
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1. A valve, comprising:
- a casing of ceramic material having a cylindrical cavity formed therein with a peripheral cavity surface and end faces, an inflow duct for a pressurized medium communicating with said cavity and an outflow duct for the medium flowing out with reduced pressure communicating with said cavity;
a rotor of ceramic material received in said cylindrical cavity;
said rotor being a cylindrical body with end faces and a peripheral rotor surface formed with a multiplicity of recesses at a spacing distance from one another in a direction of rotation, said peripheral rotor surface, in regions thereof between said recesses, sealingly bearing against said peripheral cavity surface in said casing, and said end faces of said rotor sealingly bearing against said end faces of said casing.
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Abstract
The valve, which is particularly suitable as a pressure reducing valve, has a housing, with a cylindrical chamber for a rotor, an inlet for a pressurized medium, and an outlet for the escaping reduced pressure medium. The housing and the rotor are made from a ceramic material and the rotor is a cylindrical body, which has, on the outer surface thereof, a number of recesses which are arranged at a distance from each other, in the direction of flow. The areas of the outer surface of the rotor, between the recesses and the inner surface of the cavity, within the housing and the end surfaces of the rotor and the end surfaces of the housing together form a seal.
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Citations
9 Claims
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1. A valve, comprising:
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a casing of ceramic material having a cylindrical cavity formed therein with a peripheral cavity surface and end faces, an inflow duct for a pressurized medium communicating with said cavity and an outflow duct for the medium flowing out with reduced pressure communicating with said cavity;
a rotor of ceramic material received in said cylindrical cavity;
said rotor being a cylindrical body with end faces and a peripheral rotor surface formed with a multiplicity of recesses at a spacing distance from one another in a direction of rotation, said peripheral rotor surface, in regions thereof between said recesses, sealingly bearing against said peripheral cavity surface in said casing, and said end faces of said rotor sealingly bearing against said end faces of said casing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification