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Swing vortex check valve

A check valve, swing type technology, applied in the direction of lift valve, valve detail, control valve, etc., can solve the problems of high-density medium backflow, high processing cost, complex process, etc., to achieve high processing technology, low cost, high technology easy effect

Inactive Publication Date: 2012-01-18
ZHEJIANG GENERAL VALVE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of valve generally has the defects of complex process and high processing cost, and this structure is not easy to obtain good sealing performance, and it is easy to cause backflow of high-density medium, so the requirements for structural design and process manufacturing of check valves must be continuously improved , especially the development of structural design, so that the valve process is simple, low cost, high-precision sealing, etc.

Method used

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Examples

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Embodiment Construction

[0015] A check valve, comprising a valve body 1, a valve cover 2 and a valve plate 3, the upper and lower inner walls of the inlet part 11 of the valve body 1 are of asymmetric structure, the upper inner wall is a slope, the lower inner wall is a plane, the fluid flows from the inlet part 11 After entering, a vortex field is formed to increase the sealing torque on the valve plate 3, the sealing effect of the valve plate is better, and the service life is longer.

[0016] Furthermore, the upper end of the valve plate 3 is connected with an integrated shaft 31, the shaft 31 and the valve plate 3 are of an integral structure, and the shaft 31 is parallel to the plane of the valve plate 3, and the inside of the valve cover 2 on the valve body 1 is provided with a placement shaft. The groove 4, the groove 4 is located at the top of the fluid outlet part 12, there is a raised edge 13 beside the groove 4, and there is a gap on the edge, the connecting piece between the valve plate sh...

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Abstract

The invention discloses a swing vortex check valve. The valve comprises a valve body, a valve cover, a valve flap and a valve plate, wherein the upper and lower inner walls of an inlet part of the valve body have an asymmetric structure, and the front side of the valve flap is provided with an oval concave surface, so that fluid forms a vortex field to increase seal moment. The invention has the advantages that: the swing vortex check valve has new breakthrough in aspects of mechanisms and processes, and the characteristic that the check valve can realize seal pressurization by means of backflow of a medium is achieved; and through implementation, compared with the conventional product, the swing vortex check valve has incomparable advantages in aspects of cost price and performance.

Description

technical field [0001] The invention relates to a valve, in particular to a swing type vortex check valve. Background technique [0002] Existing check valve is made up of valve body, valve flap, pin, valve cover, and valve body is arc-shaped symmetry up and down, and valve flap is plane. This kind of valve generally has the defects of complex process and high processing cost, and this structure is not easy to obtain good sealing performance, and it is easy to cause backflow of high-density medium, so the requirements for structural design and process manufacturing of check valves must be continuously improved , especially the development of structural design, so that the valve process is simple, low cost, high-precision sealing, etc. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention provides a swing type vortex check valve with low processing cost and good sealing performance. [0004] In order to achieve the above object, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/03F16K27/02F16K1/36
Inventor 何向军
Owner ZHEJIANG GENERAL VALVE CO LTD
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