Duplex type hydraulic control one-way valve

Abstract

The invention discloses a duplex type hydraulic control one-way valve, which comprises a valve body and a main valve core and is characterized in that a valve cavity is arranged in the valve body, the main valve core is arranged in the valve cavity, a spring connected with the top of the valve body is arranged inside the main valve core, an axial small hole is formed in the lower end of the main valve core, a radial hole communicated with the axial small hole is formed in the outer circle of the main valve core, the axial small hole is sealed through an unloading valve core push rod, an unloading valve core is arranged at the upper end of the unloading valve core push rod, a control opening is formed in the bottom of the valve body, a piston is arranged in the valve cavity arranged at the upper end of the control opening, a push rod is connected with the upper end of the piston, and the push rod can push the unloading valve core push rod to upwards move. The duplex type hydraulic control one-way valve solves the problems that the one-way valve can only realize the one-way flowing, the stable reverse flowing cannot be realized, the use function is single, in addition, the damage can easily occur, and the service life is short. The provided duplex type hydraulic control one-way valve has the advantages that the structure is simple, the use is convenient, the two-way flowing can be fast and stably realized, in addition, the damage cannot easily occur, and the service life is long.

Description

technical field [0001] The invention relates to a one-way valve, in particular to a compound hydraulic control one-way valve. Background technique [0002] One-way valve is also called check valve or check valve. Used in hydraulic systems to prevent reverse flow of oil flow, or used in pneumatic systems to prevent reverse flow of compressed air. The current one-way valve can only flow in one direction and cannot realize relatively stable reverse flow. It has single function, complex structure, low safety performance, easy damage and short service life. Contents of the invention [0003] In order to solve the problems in the prior art that the one-way valve can only flow in one direction, cannot realize relatively stable reverse flow, has a single function, complex structure, low safety performance in use, is easy to be damaged, and has a short service life, the present invention provides A compound hydraulic control check valve with simple structure, convenient use, fast...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems in the prior art that the one-way valve can only flow in one direction, cannot realize relatively stable reverse flow, has a single function, complex structure, low safety performance in use, is easy to be damaged, and has a short service life, the present invention provides A compound hydraulic control check valve with simple structure, easy to use, fast and stable two-way flow, not easy to damage and long service life was developed.

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