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Anti-backflow valve

A technology for anti-backflow valves and discs, which is applied in the direction of control valves, valve devices, and functional valve types, etc., and can solve problems such as increased liquid flow power, energy consumption, and increased resistance

Inactive Publication Date: 2014-12-24
SHANGHAI PANDA MACHINEGRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, in order to prevent the backflow of the liquid in the pipeline, it is generally realized by installing a check valve in the pipeline. The check valve makes the liquid only flow in one direction through the action of the valve disc and the spring. Blocking in the middle of the pipeline increases the resistance when the liquid flows, resulting in an increase in the power to promote the flow of the liquid and consumes energy

Method used

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  • Anti-backflow valve

Examples

Experimental program
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Embodiment Construction

[0007] Such as figure 1 The shown anti-backflow valve includes: a valve body 1, a valve disc 2, a sealing ring 3, and a hinge 4. The valve body 1 includes a valve plate 7 and an inlet and outlet flange 8. There is an overflow valve on the valve plate 1. Hole 5, there is a sealing groove 6 on the valve plate 1, the sealing ring 3 is embedded in the sealing groove 6, the valve disc 2 is connected with the valve plate 1 through the hinge 4, the direction of the arrow in the figure is the direction of liquid flow, press the The anti-backflow valve is installed in the system pipeline in the direction of liquid flow. When the liquid flows through the pipeline, the thrust of the liquid pushes the valve disc 2, and the valve disc 2 drives the hinge 4 to rotate upwards to open the anti-backflow valve, so that the liquid flows through. Anti-backflow valve, when the liquid does not need to flow, its thrust disappears. At this time, the valve disc 2 drives the hinge 4 to rotate downward d...

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Abstract

Disclosed is an anti-backflow valve. When in use, the anti-backflow valve is mounted inside a pipe requiring backflow prevention; by means of thrust force of liquid, valve flaps can be opened, and the fluid flows through the anti-backflow valve; when the liquid does not need to flow, the thrust force of the liquid can be stopped, the valve flaps can drive hinges to rotate downwards by gravity and can be adhered to a sealing ring, so that the aim of preventing backflow of the liquid flowing through the anti-backflow valve. Due to the fact that the valve flaps can rotate to a direction parallel to the flowing direction of the liquid, the radial resistance to the liquid can be reduced.

Description

technical field [0001] The invention relates to an anti-backflow valve, in particular to a pipeline fluid backflow prevention valve. Background technique [0002] In the prior art, in order to prevent the backflow of the liquid in the pipeline, it is generally realized by installing a check valve in the pipeline. The check valve makes the liquid only flow in one direction through the action of the valve disc and the spring. Blocking in the middle of the pipeline will increase the resistance when the liquid flows, resulting in an increase in the power to promote the flow of the liquid and consume energy. Contents of the invention [0003] The object of the present invention is to design an anti-backflow valve with a rotatable disc, which can reduce the resistance when the liquid flows and achieve the purpose of energy saving. [0004] The present invention adopts the following structure to achieve the above object. The anti-backflow valve is composed of a valve body, a val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/03
CPCF16K15/03
Inventor 池学聪谭红全
Owner SHANGHAI PANDA MACHINEGRP CO LTD