Angle type differential slow closing non-return valve

Abstract

The invention discloses an angle type differential slow closing non-return valve. The angle type differential slow closing non-return valve comprises a valve body, a valve flap, a cavity, a guide rod,a piston and a valve cover, wherein the inner top of the valve body is provided with the cavity, the inner top of the cavity is provided with the valve flap, the lower portion of the valve flap is connected with the guide rod, the tail end of the guide rod is provided with the piston, the valve flap is connected with the piston through the guide rod, and the tail end of the valve body is providedwith the valve cover. The beneficial effects achieved by the angle type differential slow closing non-return valve are that when the outer circle of the piston generates a matching stage with the inner diameter of the cavity, a damping effect will be generated, this moment, the valve flap will perform speed-reducing moving to achieve the purpose of slow closing until the valve flap is in contactwith a valve seat, a medium is closed, the non-return effect is achieved, the reliability and tightness of contacting between the valve flap and a valve seat seal pair are enhanced, the impact force between the valve flap and the valve seat seal pair is reduced, and the service life of the valve can be prolonged.

Description

technical field [0001] The invention relates to a check valve, in particular to an angle differential slow-closing check valve, which belongs to the technical field of check valves. Background technique [0002] The reliability and tightness of the contact between the disc of the traditional check valve and the sealing pair of the valve seat are not strengthened, it is difficult to reduce the impact force between the disc and the sealing pair of the valve seat, and the service life of the valve is short. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an angle differential slow-closing check valve. [0004] In order to solve the problems of the technologies described above, the present invention provides the following technical solutions: [0005] An angle differential slow-closing check valve of the present invention includes a valve body, a valve clack, a cavity, a gui...

AI Technical Summary

Problems solved by technology

[0002] The reliability and sealing performance of the contact between the disc and the sealing pair of the valve seat of the traditional check valve cannot be strengthened, and it is difficult to reduce the impact force between the disc and the sealing pair of the valve seat, and the service life of the valve is short

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