Hydraulic one-way valve

Abstract

The invention discloses a hydraulic one-way valve which comprises a valve body (1), a main valve plug (2) and a top rod (3), wherein the valve body (1) is provided with a liquid inlet (4), a liquid outlet (5), a control liquid inlet (6) and a liquid discharge channel; the main valve plug (2) and the top rod (3) are arranged in the valve body (1); the outer diameter of the upper end head part of the valve body (1) is greater than the outer diameter of the part below the head part; the part below the head part of the valve body (1) is provided with outer screw threads; the valve wall of the part below the head part of the valve body is provided with a plurality of transverse channels; the valve body is through up and down; the upper part of the top rod (3) is provided with a control piston (7); the control piston is also provided with a spring II (8); and one end of the spring II is fixed on the control piston (7), and the other end of the spring II is fixed on the valve body (1). By adopting the hydraulic one-way valve provided by the invention, the hydraulic components and pipelines can be connected, thus an articulated bolt and the hydraulic one-way valve can be integrated.

Description

Technical field [0001] The invention relates to the field of valves, in particular to a hydraulically controlled one-way valve. Background technique [0002] Hydraulic control check valve The hydraulic control check valve is a valve that can open the check valve by controlling the pressure of the liquid. The prior art hydraulically controlled one-way valve generally includes a valve body, a valve core and a top rod. The valve body is provided with a liquid inlet, a liquid outlet, a control liquid inlet and a liquid discharge channel. The valve core and The ejector rod is set in the valve body; by adjusting the liquid pressure of the control liquid inlet, that is, the pushing force on the ejector rod, when the one-way valve needs to be opened, the liquid pressure of the control liquid inlet is increased to push the ejector rod, and the ejector rod pushes and Open the spool to open the one-way valve. [0003] Since hydraulic control check valves are generally used in hydraulic syst...

AI Technical Summary

Problems solved by technology

[0003] Since the hydraulic control check valve is generally used in the hydraulic system, and the hydraulic parts and pipelines in the hydraulic system often need hollow hinged bolts to connect, when the hydraulic control check valve needs to be used, it needs to be installed in the pipeline. An additional hydraulic control check valve is installed on the road, that is, the hydraulic control check valve and the hinged bolts are separated, and they need to be installed and positioned separately during installation and use. The process is relatively troublesome. At this time, the failure rate is also high, which is not conducive to maintenance. Inconvenience

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