Self-sealing swing soft seal check valve

A swing-type, soft-sealing technology, applied in the direction of lifting valves, control valves, valve devices, etc., can solve the problems of small deformation of the elastic sealing layer under pressure, valve leakage, leakage, etc., to achieve simple structure, not easy to leak or The effect of the leak

Active Publication Date: 2017-10-31
AQUA CASTING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the check valve with the above structure is that when the fluid pressure is low, the elastic sealing layer on the sealing end face is less deformed under pressure, which may easily cause leakage or leakage of the valve.

Method used

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  • Self-sealing swing soft seal check valve
  • Self-sealing swing soft seal check valve
  • Self-sealing swing soft seal check valve

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Experimental program
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Embodiment Construction

[0027] The self-sealing swing-type soft-sealing check valve of the first structure is as follows: figure 1 and figure 2 As shown, including the valve body 1, the valve body 1 is provided with a liquid inlet chamber 2 and a liquid outlet chamber 3 that communicate with each other, the outer port of the liquid inlet chamber 2 is the liquid inlet port, and the outer port of the liquid outlet chamber 3 is the liquid outlet port . A valve shaft 12 is hinged on the valve body 1, and a rocker 4 is fixedly connected to the valve shaft 12. A valve plate 5 is connected to the rocker 4. The outer surface of the valve plate 5 is coated with an elastic sealing layer 6, and the elastic sealing layer 6 is a sealing layer made of rubber, a sealing layer made of polytetrafluoroethylene or an elastic sealing layer made of other materials. One end surface of the valve plate 5 is a connection end surface for connecting with the rocker 4 , and the other end surface is a sealing end surface that...

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PUM

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Abstract

The invention discloses a self-sealing swing-type soft-sealed check valve, which comprises a valve body in which a liquid inlet chamber and a liquid outlet chamber communicated with each other are arranged in the valve body. A rocker is hinged in the valve body and is connected with a movable The valve plate that blocks the liquid inlet chamber and the liquid outlet chamber, the outer surface of the valve plate is covered with an elastic sealing layer; one end face of the valve plate is a connection end face for connecting with the rocker, and the other end face is a sealing end face; The inner end surface of the cavity wall of the liquid inlet chamber is provided with a counterbore so that a transitional step is formed between the liquid inlet chamber and the counterbore; the elastic sealing layer on the sealing end surface of the valve plate contacts and cooperates with the transitional step to form a shaft. Axial sealing pair for radial sealing; after the elastic sealing layer on the outer peripheral surface of the valve plate contacts and cooperates with the hole wall of the counterbore, a radial sealing pair for realizing radial sealing can be formed. The check valve has a simple structure, has dual effects of axial sealing and radial sealing, and is not easy to cause leakage or leakage even when the fluid pressure is low.

Description

technical field [0001] The invention relates to a self-sealing swing-type soft-sealing check valve. Background technique [0002] At present, the known swing-type soft-sealed check valve includes a valve body, which is provided with a liquid inlet chamber and a liquid outlet chamber that communicate with each other. The outer surface of the valve plate blocked by the liquid outlet chamber is covered with an elastic sealing layer; one end surface of the valve plate is a connection end surface for connecting with the rocker, and the other end surface is a sealing end surface. The sealing principle is that the valve plate rotates around the pin shaft in the valve body, and the sealing end surface of the valve plate seals the inner port of the liquid inlet chamber, and the elastic sealing layer on the sealing end surface is compressed and deformed by the fluid pressure and the self-weight of the valve plate to realize the sealing. Block the liquid inlet and outlet chambers. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K15/03F16K15/18F16K1/36
CPCF16K1/36F16K15/033F16K15/1821
Inventor 张海若张建成陈波
Owner AQUA CASTING INC
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