Check valve of double non-return device with cylindrical diaphragm of rubber

A kind of technology of check device and rubber diaphragm, applied in valve device, control valve, functional valve type and other directions, can solve the problems of large closing water hammer, large resistance and large quality, etc.

Inactive Publication Date: 2006-07-05
SHANGHAI SHANGLONG VALVE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The disc used in the existing check valve has larg

Method used

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  • Check valve of double non-return device with cylindrical diaphragm of rubber

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Embodiment Construction

[0005] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0006] In the figure, the present invention is composed of a valve body 1, a first-stage check device 2, and a second-stage check device 3; wherein, a fixed sleeve 12 is arranged in the valve body and is fixed by a support rib 11, and the first-stage check device is provided with At the inlet section of the valve body, the second-stage check device is arranged at the outlet section of the valve body; the second-stage check device is composed of a cylindrical rubber diaphragm valve disc 31 and a support net cover 32; the front end of the rubber diaphragm cylinder valve disc 31 It is fixed in the fixed sleeve 12 of the valve body, and the closing tension of the rubber diaphragm cylinder 31 is supported on the outside by the support net cover 32 fixed on the valve body, and forms a sealing pair; when flowing downstream, the pressure on the outside...

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Abstract

A check valve of double no ¿C return units with rubber diaphragm barrel is composed of valve body, the first non ¿C return unit and the second non ¿C return unit. It is featured as setting fixed bush being fixed by support rib plate in valve body, setting the second non ¿C return unit at outlet section of valve, forming outlet section by barrel ¿C type rubber diaphragm valve clack and support screen case, fixing front end of said valve clack in fixed bush of valve body and fixing support screen case at internal side of valve body.

Description

Technical field: [0001] The invention belongs to the technical field of valves, in particular to a check valve with double check devices with a rubber diaphragm cylinder. Background technique: [0002] The disc used in the existing check valve has large mass, large shut-off water hammer and large resistance. Invention content: [0003] The purpose of the present invention is to provide a double-stage check device valve with a synchronous sealing adjustment device which can effectively overcome the above-mentioned defects, and both check devices can be reliably sealed at the same time. In order to achieve the above purpose, the technical solution adopted in the present invention is: a check valve with double check devices with a rubber diaphragm cylinder, which is mainly composed of a valve body, a first-stage check device and a second-stage check device, Its characteristics are: there is a fixed sleeve in the valve body, which is fixed by the supporting rib plate, and the...

Claims

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Application Information

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IPC IPC(8): F16K15/00F16K15/14
Inventor 季能平
Owner SHANGHAI SHANGLONG VALVE FACTORY
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