Impact-resistance vacuum interface valve

Abstract

The invention discloses an impact-resistance vacuum interface valve. The valve comprises a valve body and a piston diaphragm arranged in the valve body, a first inlet and a first outlet are formed inthe valve body, and the valve is characterized in that the piston diaphragm forms a damping cavity. The vacuum interface valve further comprises a damping system and a vacuum driving system, the damping system comprises damping liquid, a damping liquid chamber, a first one-way valve and a second one-way valve, a driving diaphragm is arranged in the vacuum driving system, the driving diaphragm is fixedly connected with the piston diaphragm through a connecting rod, the damping cavity is filled with the damping liquid, the piston diaphragm in the vacuum interface valve has the impact resistance,the service life of the piston diaphragm can be prolonged, and the reliability of the interface valve can be prolonged.

Description

【Technical field】

[0001] The invention relates to the technical field of valves, in particular to an impact-resistant interface valve. 【Background technique】

[0002] Now in the field of drainage, the stepped spool or tapered spool slides in the valve body to realize the opening or closing of the fluid. In this context, people have developed a vacuum interface valve, which has the advantages of high response speed, high throughput and high sealing.

[0003] However, in the vacuum interface valve in the prior art, due to the fast switching speed between vacuum and standard atmospheric pressure in the vacuum chamber, the piston diaphragm in the interface valve will be subjected to strong impact when it is opened and closed, which is very easy to cause fatigue damage to the piston diaphragm , reducing the reliability of the interface valve.

[0004] Therefore, there is an urgent need to develop a shock-resistant vacuum interface valve. 【Content of invention】

[0005] The p...

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