Wear-free spherical check valve

A non-return valve, wear-free technology, applied in the direction of valve devices, control valves, functional valves, etc., can solve the problems of poor wear resistance of the valve core, affecting the service life and performance of the valve, and wear of the valve core and valve body. Achieve good sealing performance, good anti-backflow effect and long service life of the valve

Inactive Publication Date: 2017-07-07
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary spherical check valves have poor wear resistance due to frequent contact between the valve core and the valve body or their contact points are not treated, resulting in wear and tear on the valve core and valve body, affecting the service life and performance of the valve

Method used

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  • Wear-free spherical check valve

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Embodiment Construction

[0013] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:

[0014] Such as figure 1 As shown, the present invention provides a non-wearing spherical check valve, comprising a side valve body 7, the left end of the side valve body 7 is connected to the right end of the valve body 1 through bolts 4 and nuts 5, which is convenient for installation, debugging and maintenance of the valve; The left end of the valve body 7 is provided with a deflector 6, and a gasket 8 is installed between the deflector 6, the valve body 1 and the side valve body 7, and the gasket 7 is made of flexible graphite material to enhance the sealing performance of the valve; The plate 6 is equipped with a spherical cylinder valve core 2, the spherical cylinder valve core 2 and the middle part of the valve body 1 form a sealing surface 14, and the sealing surface 14 is surfacing welded with Stellite alloy with a thickness ≥ 2mm to enhance the perf...

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PUM

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Abstract

The invention discloses a wear-free spherical check valve, which comprises a valve body, a spherical cylindrical valve core, a spring, a guide plate, a side valve body, and a gasket, and is characterized in that: the left end of the side valve body is connected to the right end of the valve body Connection, the left end of the side valve body is provided with a deflector plate, and gaskets are installed between the deflector plate, the valve body and the side valve body, and a spherical cylinder valve core is installed in the deflector plate, and the spherical cylinder valve core It forms a sealing surface with the middle part of the valve body. A guide rod is set on the spherical cylinder spool, and the guide rod is in the shape of three steps. Contact guide, a compression spring is installed between the spherical cylindrical valve core and the deflector, and the sealing surface is surfacing with Stellite alloy. The invention utilizes the spring to press the spherical cylindrical valve core, the spherical cylindrical valve core and the deflector plate are contacted and guided at two places, the neutrality is good, the structure is reasonable, the seal is not dislocated, the sealing performance is good, and the anti-backflow effect is good. The body valve core and the valve body are surfacing welded with stellite alloy, which has good wear resistance and long service life of the valve.

Description

technical field [0001] The present invention relates to a check valve, more specifically, it relates to a wear-free spherical check valve. Background technique [0002] Check valve is the basic element of fluid control engineering. It can determine the direction of fluid flow, protect other fluid machinery and pipeline safety by preventing fluid reverse flow. It is widely used in petroleum, metallurgy, chemical industry, electric power, construction, heat, Water treatment and other industries. Ordinary spherical check valves have poor wear resistance due to frequent contact between the valve core and the valve body or their contact points are not treated, resulting in wear of the valve core and valve body, which affects the service life and performance of the valve. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a non-abrasive spherical check valve, which uses stellite alloy surfacing at the contact point ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/04
CPCF16K15/044
Inventor 伍国果金容
Owner CHONGQING UNIV OF ARTS & SCI
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