Zero-leakage sealing structure of hydraulic valve
The utility model provides a zero-leakage sealing structure of a hydraulic valve. The zero-leakage sealing structure aims to solve the problem that a valve seat and a conical sealing surface of the valve seat are smooth surfaces. And a single wide annular sealing belt is formed on the conical sealin...
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Sprache: | chi ; eng |
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Zusammenfassung: | The utility model provides a zero-leakage sealing structure of a hydraulic valve. The zero-leakage sealing structure aims to solve the problem that a valve seat and a conical sealing surface of the valve seat are smooth surfaces. And a single wide annular sealing belt is formed on the conical sealing surfaces of the spherical valve core and the valve seat under the action of the spring, so that sealing is realized. After frequent use, the conical sealing surface of the valve seat is subjected to plastic deformation and abrasion or impurities enter the conical sealing surface of the valve seat, so that the sealing reliability is reduced. The ball valve is characterized by comprising a spherical valve element, a valve seat and a conical sealing face of the valve seat, the conical sealing face of the valve seat is a plurality of convex-concave annular belts, and the convex-concave annular belts refer to two or more convex annular belts and concave annular belts. The sealing structure has the advantages that a pl |
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