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ball valve

A ball valve and valve seat technology, which is applied in the direction of valve devices, cocks including cut-off devices, engine components, etc., can solve the problem that the moving distance of the valve seat sealing ring is too long, the moving distance of the valve seat sealing ring is shortened, and the valve seat and the ball cannot be realized. Sealing and other issues to achieve the effect of ensuring reliability

Active Publication Date: 2017-02-01
NEWAY VALVE SUZHOU
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] For this reason, the technical problem to be solved by the present invention is that the unreasonable structural design of the existing high-temperature top-entry ball valve causes the moving distance of the sealing ring of the valve seat to the valve body and the sphere to be too long, which eventually leads to the inability to realize the gap between the valve seat and the sphere. Sealing; the invention shortens the moving distance of the sealing ring of the valve seat by rationally designing the structure of the valve seat, and realizes the reliable sealing performance of the ball valve

Method used

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Embodiment Construction

[0027] figure 1 Shown is a ball valve provided by the embodiment of the present invention, which includes a retainer 3 arranged between the valve body 1 and the ball 2, and the retainer 3 and the valve body 1 are sealed and connected by the first sealing material 5, and also includes a 3 and the valve seat 4 between the sphere 2, the valve seat 4 and the sphere 2 are sealed and connected, and the valve seat 4 and the retainer 3 are sealed and connected through the second sealing material 8; A limiting member 6 for the axial movement of the retainer 3 ; an elastic member 7 for exerting an axial elastic force is provided between the retainer 3 and the valve seat 4 , for pressing the valve seat 4 against the ball 2 . The assembly process of the ball valve of the present invention is: first install the first sealing material 5 on the holder 3, and place the stopper 6 on the outer surface of the holder 3 close to the ball 2, and put the holder 3 into the holder. In the valve body ...

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Abstract

The invention relates to a ball valve. The ball valve comprises a fixing apparatus and a valve seat, wherein the fixing apparatus is arranged between a valve body and a ball body; the fixing apparatus is connected with the valve body in a sealing manner through a first sealing material; the valve seat is positioned between the fixing apparatus and the ball body; the valve set is connected with the ball body in a sealing manner; the valve seat is connected with the fixing apparatus in a sealing manner through a second sealing material; a limiting part is arranged between the fixing apparatus and the valve body and used for limiting axial movement of the fixing apparatus; and an elastic part is also arranged between the fixing apparatus and the valve seat and used for applying axial elastic force and pressing the valve seat to the ball body. As the elastic part is positioned between the fixing apparatus and the valve seat, the sealing between the valve seat and the ball body is realized through the second sealing material by only pushing the valve seat to the ball body due to the axial elastic force of the elastic part after the fixing apparatus is limited by the limiting part between the fixing apparatus and the valve body, so that the elastic part is low in performance requirement in assembly and disassembly processes; and meanwhile, the fixing apparatus in the valve body is connected with the valve body in a sealing manner through the second sealing material, so that the sealing effect of the ball valve is guaranteed.

Description

technical field [0001] The invention relates to the field of valve manufacturing, in particular to a ball valve. Background technique [0002] Ball valve has become one of the most widely used valves due to its reliable sealing, simple structure and convenient maintenance. Among the ball valves, the top entry ball valve has the advantages of less external leakage points, no influence of pipeline stress on the middle flange, and online maintenance, etc., and is widely used. [0003] When assembling the existing top-entry ball valve, the retainers on both sides of the valve ball are usually slid along the inner wall of the valve to leave a space for the valve ball to be put in, and then the valve ball is installed. The disassembly process is opposite to the assembly process. For large-diameter ball valves, due to the large volume of the valve ball and the retainer, it is difficult to disassemble the ball valve. For example, the Chinese patent document CN202402694U discloses ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/06F16K5/20
CPCF16K5/201F16K5/202
Inventor 高云川陈鉴刘远祥
Owner NEWAY VALVE SUZHOU
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