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Sealing structure for valve seat and globe

A technology of sealing structure and sphere, which is applied to valve devices, cocks including cut-off devices, engine components, etc., can solve problems such as unbearable, high medium temperature, operating temperature restrictions, etc., and achieve good sealing effect.

Inactive Publication Date: 2016-05-18
XINUOWEI VALVE CONTROL SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The conventional soft-sealed ball valve is limited by the sealing material, its service temperature is limited, and it cannot withstand higher medium temperature

Method used

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  • Sealing structure for valve seat and globe

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Embodiment Construction

[0011] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0012] The technical scheme of concrete implementation of the present invention is:

[0013] Such as figure 1 As shown, a sealing structure between the valve seat 2 and the sphere 1 includes the valve seat 2 and the sphere 1. The end surface corresponding to the valve seat 2 and the sphere 1 is provided with an annular first assembly groove, and the assembly in the above-mentioned first assembly groove There is a PEEK sealing ring 3, the outer wall of the PEEK sealing ring 3 is provided with an annular second assembly groove, the second assembly groove is equipped with an O-ring 4, and the end of the first assembly groove is provided with a retaining ring ...

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Abstract

The invention relates to the technical field of ball valves, and discloses a sealing structure for a valve seat and a globe. The sealing structure for the valve seat and the globe comprises a valve seat and the globe, wherein an annular first assembling groove is formed in an end surface, corresponding to the globe, of the valve seat, a PEEK sealing ring is assembled in the first assembling groove, an annular second assembling groove is formed in the outer side wall of the PEEK sealing ring, an O-shaped ring is assembled in the second assembling groove, a check ring is arranged at the end part of the first assembling groove, a limiting groove is formed in a side wall of the PEEK sealing ring, and the limiting groove corresponds to the check ring. The sealing structure provided by the invention can bear high temperature, high pressure and corrosion conditions.

Description

technical field [0001] The invention relates to the technical field of ball valves, in particular to a sealing structure between a valve seat and a ball. Background technique [0002] The ball valve is a valve in which the opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. The ball valve came out in the 1950s. With the rapid development of science and technology, the continuous improvement of production technology and product structure, it has rapidly developed into a major valve category in just 50 years. In western industrially developed countries, the use of ball valves is increasing year by year. [0003] Conventional soft-sealed ball valves are limited by sealing materials, and their service temperature is limited, so they cannot withstand higher medium temperatures. Contents of the invention [0004] The purpose of the present invention is to provide a sealing structure between the valve seat and the ball, whi...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K5/20
CPCF16K5/0689F16K5/201
Inventor 韩泽海
Owner XINUOWEI VALVE CONTROL SUZHOU CO LTD
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