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Shuttle type check valve

A check valve and shuttle type technology, applied in the field of one-way valves, can solve the problems of short service life, complex structure, leakage, etc., and achieve the effect of increasing selectivity and easy disassembly and assembly

Inactive Publication Date: 2008-07-16
WINJET HIGH TECH INVESTMENT BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The structure of the existing shuttle check valve is complex, the disassembly accuracy and sealing reliability of the valve core and the shell, the valve core assembly are not high, resulting in short service life and leakage of the valve

Method used

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  • Shuttle type check valve

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] The inner cavity of the flange at the right end of the housing 4 is threadedly connected with the precision fitting ring 7, and the connection length is greater than 20mm. The valve sleeve 1 is integrated with the precision fit ring 7 and forms a closed cavity with the valve disc 3. In the cavity, a spring 2 is set on the valve shaft 9, and the valve shaft 9 is dynamically matched with the shaft sleeve 5 connected to the central hole of the valve sleeve 1. The precision fit section length between the shaft sleeve 5 and the valve shaft 9 is greater than 20 mm. A through hole 10 is arranged on the valve sleeve 1 . A lock nut 6 is arranged on the axle sleeve 5 . The sealing method between the valve seat 8 and the disc 3 can be selected as follows:

[0018] ① O-ring flexible seal on the disc end face;

[0019] ② O-ring flexible seal on valve disc cylindrical surface;

[0020] ③Metal hard seal on the disc end face;

[0021] ④ Metal hard seal on the end face of the valve...

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PUM

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Abstract

The invention provides a shuttle-typed check valve, which solves the problem that the existing shuttle-typed check valve has low assembly and disassembly precision and poor reliability. A valve sleeve (1) and a valve flap (3) in a shell (4) form an enclosed chamber which is internally provided with a spring (2); the valve sleeve is provided with a hole (10); a valve shaft (9) is connected with the valve flap (3) and movably matched with a shaft sleeve (5) in the central hole of the valve sleeve (1); the shaft sleeve (5) is matched with a central hole thread and provided with a locking nut (6); the valve sleeve is connected with a precise matching ring (7) which is matched with a flow passage internal hole thread at one end of the shell (4); the end surface and / or the cylindrical surface of the valve flap (3) is hermetically matched with a valve seat (8) at the other end of the shell (4).

Description

Technical field: [0001] The present invention relates to check valves. Background technique: [0002] The structure of the existing shuttle check valve is complicated, and the disassembly accuracy and sealing reliability of the spool and the shell and the spool assembly are not high, resulting in short service life and leakage of the valve. Invention content: [0003] The object of the present invention is to provide a shuttle check valve with simple structure, high assembly precision and reliable sealing. [0004] The present invention is achieved like this: [0005] In the shuttle check valve of the present invention, the valve sleeve 1 and the valve disc 3 in the housing 4 form a closed cavity, and there is a spring 2 in the cavity, and a hole 10 is provided on the valve sleeve, and the valve shaft 9 is connected with the valve disc 3 and connected with the valve sleeve 1. The shaft sleeve 5 in the center hole is in motion fit, the shaft sleeve 5 is matched with the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/06
CPCF16K15/063
Inventor 曾祥炜
Owner WINJET HIGH TECH INVESTMENT BEIJING
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