Self-sealing eccentric half-ball valve

A self-sealing, hemispherical valve technology, applied in the direction of valve devices, cocks including cut-off devices, mechanical equipment, etc., can solve problems such as shortening and increasing valve plate life, leakage or leakage of ball valves, etc., to prolong service life and open The effect of small torque, not easy to leak or leak
CN105508646AActive Publication Date: 2016-04-20AQUA CASTING INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AQUA CASTING INC
Publication Date
2016-04-20

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Abstract

The invention discloses a self-sealing eccentric half-ball valve which comprises a valve body, wherein a liquid inlet cavity is arranged in the valve body; one end of the valve body is provided with a water inlet communicated with the liquid inlet cavity, and the other end is provided with a water outlet communicated with the liquid inlet cavity; the top of the valve body is connected with a valve cap; the valve cap is connected with a main valve shaft; the bottom of the valve body is provided with an auxiliary valve shaft; a half ball valve plate connected to the main valve shaft and auxiliary valve shaft is arranged in the liquid inlet cavity; the surface of the half-ball valve plate is coated with an elastic sealing layer; the elastic sealing layer of the sealing surface of the half-ball valve plate and the inner port position of the water inlet form a contact fit to form an axial sealing pair capable of implementing axial sealing; and the elastic sealing layer on the sealing surface of the half-ball valve plate and the wall of the water inlet form a contact fit to form a radial sealing pair with radial self-sealing effect. The self-sealing eccentric half-ball valve has the dual effects of axial sealing and radial sealing, can not easily cause seepage or leakage, and has the advantages of small opening torque and longer service life.
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Description

technical field

[0001] The invention relates to a self-sealing eccentric hemispherical valve. Background technique

[0002] At present, the known eccentric hemispherical valve includes a valve body, the valve body is provided with a liquid inlet chamber, one end of the valve body is provided with a water inlet hole communicating with the liquid inlet chamber, and the other end is provided with a water outlet hole communicated with the liquid inlet chamber. The top is connected with the valve cover, the valve cover is connected with the main valve shaft, the bottom of the valve body is provided with the auxiliary valve shaft, and the liquid inlet chamber is provided with a hemispherical valve plate connected to the main valve shaft and the auxiliary valve shaft, and a hemispherical valve plate. The surface is covered with an elastic sealing layer. The sealing is realized by squeezing the elastic sealing layer to deform it through the cooperation between the hemispherical val...

Claims

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