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Elasticity driven check valve

A technology of check valve and driving ring, which is applied in the direction of control valve, valve device, function valve type, etc., and can solve the problem of not being allowed to use

Inactive Publication Date: 2008-08-13
R CONRADER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It follows that the use of a single elastomeric ring component may not permit the use of ring shapes and materials that are optimal for both elastic actuation and sealing

Method used

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  • Elasticity driven check valve
  • Elasticity driven check valve
  • Elasticity driven check valve

Examples

Experimental program
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Embodiment Construction

[0048] Referring to the figures, like reference numerals are used to indicate the same or corresponding parts throughout the embodiments and figures. Variations of specific embodiments of the corresponding parts will be denoted by lowercase letters and / or single or multiple designators plus reference numerals.

[0049]Fig. 1 is an exploded perspective view of a check valve 20a of the present invention, showing an external view of a valve body 22a. Valve assembly 24a includes elastomeric sealing ring 26a, drive ring 28a and plug 30a. The plug 30a includes a shaft 32a having a plurality of grooves 33a positioned to serve as air passages when the plug 30a is inserted into a valve cavity 34a of the valve body 22a. The valve body 22a includes upstream threads 36a on the inlet end 38a of the valve body 22a and downstream threads 40a on the outlet end 42a of the valve body 22a. Upstream threads 36a and downstream threads 40a allow connection to other components of the fluid system ...

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PUM

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Abstract

A check valve is for use in a fluid system. A valve body has an inlet end (38A), a valve cavity (34A), and an outlet end (42A). A valve enables a valve assembly to control the flow of fluid therethrough. A plug (30A) of the valve assembly includes tapered and non-tapered sections, the tapered section having a cross section that increases in diameter in a direction that is downstream from the inlet end of the valve body. A sealing ring (26A) is mounted to reciprocate on the non-tapered section and an elastomeric actuation ring (28A) is mounted along the tapered section. The tapered section biases the actuation ring to a normal position, at which the actuation ring contacts and positions the sealing ring in contact with the valve body and the valve assembly to prevent fluid from flowing out the outlet end of the valve body.

Description

technical field [0001] The present invention relates to a valve, in particular a spring actuated check valve for use in a fluid system. Background technique [0002] Check valves are used in various applications within fluid systems to allow one-way passage of upstream pressurized fluid, ie, an outlet of the check valve, beyond a certain preselected threshold pressure level. Expandable O-ring type check valves may include an elastomeric ring that can fit over a conical, conical surface of the valve. The elastic ring typically has a memory shape and is mounted to compress the tapered surface, biasing the elastic ring to a normal position on the tapered surface having the smaller cross-sectional diameter. When the elastomeric ring is in this normal position, the elastomeric ring generally seals the valve body against fluid flow through the valve. [0003] If the fluid pressure downstream of the elastomeric ring is greater than the fluid pressure upstream of the elastomeric r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K15/02
CPCF16K15/142Y10S137/903Y10T137/7905Y10T137/7922
Inventor J·P·康韦尔
Owner R CONRADER
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