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Shuttle type reducing check valve

A check valve and reducing technology, applied in the direction of control valve, valve device, functional valve type, etc., can solve the problems of low disassembly and assembly accuracy and sealing reliability of valve core components, short service life, complex structure, etc. Light weight, easy disassembly and assembly, small size effect

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

[0003] 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 reducing check valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The inner cavity of the shuttle check valve with different diameters starts from the end face of the valve seat, and is connected to the flange at the other end as a streamlined diffusion cone. The two ends are channels and flanges with different diameters, which meet the different diameter connection requirements of the system. Require.

[0021] The outlet flange of the water pump is connected to the small flange end (inlet end) of the different diameter check valve, and the delivery pipe

[0022] The pipe is connected to the large flange end (outlet end) of the reducing check valve. This not only realizes the non-return function, but also

[0023] Realized the function of different diameter connection.

[0024] The inner cavity of the flange at the right end of the housing 8 is threadedly connected with the lining ring 3, and the valve sleeve 11 is connected with the lining ring 3 to form a closed cavity with the valve disc 13. There are springs 4 sleeved on the val...

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Abstract

The invention provides a shuttle-typed reduced check valve, which solves the problem that the existing check valve has single function, low disassembly and assembly precision and poor sealing performance. One end of a shell (8) is a large calibre passage flange (2) and the other end thereof is a small calibre passage flange (1) which has the same axes as the large calibre passage flange (2); the internal end of the flow passage of the small calibre passage flange (1) is provided with a valve seat (12) which is hermetically matched with a valve flap (13) which is connected with a valve shaft (5) which is movably matched with a valve shaft sleeve (10) in the internal hole of the valve sleeve (11); the valve sleeve is internally provided with a spring which is connected with the valve flap (13); the valve sleeve (11) is provided with a hole (14); a streamline cone internal chamber (9) is arranged between the valve seat (12) and the large calibre passage flange (2).

Description

Technical field: [0001] The present invention relates to check valves. Background technique: [0002] In the fluid control system, pipes of different calibers are generally connected by different-diameter pipes. In some systems, the front or rear ends of the different-diameter pipes need to be connected with check valves. For example: the pump outlet must be connected to the check valve at the front end, then connected to a different diameter pipe, and then connected to the delivery pipeline. The system needs must be fulfilled by two components. [0003] 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: [0004] The object of the present invention is to provide a shuttle-type different-diameter check valve with simple structure, multiple functions, no independent d...

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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