Hydraulic control one-way valve

Abstract

The invention discloses a hydraulic control one-way valve, which comprises a valve body and a guide valve, a valve seat and a valve sleeve hermetically arranged in the valve body, wherein the valve seat is arranged between the guide valve and the valve sleeve; the inside of the guide valve is provided with a valve core; the end of the valve core is pressed against the valve seat; a piston is hermetically arranged in the valve sleeve; the end of the piston penetrates into the valve seat and is opposite to the front end of the valve core; a first spring is connected between the piston and the end face of the valve seat in a pressing way; the valve body is respectively provided with at least one first interface, one second interface and one third interface; the first interface is communicated with the guide valve; the second interface is communicated with the valve seat; and the third interface is communicated with the valve sleeve; the characteristic is that a pre-compression device is arranged in the valve core; and the advantages are that: since the pre-compression device is arranged in the valve core, the hydraulic control one-way valve reduces the impact force of hydraulic pressure on a subsequent connecting piece in the starting process, stabilizes the startup and reset of the subsequent connecting piece and reduces the hydraulic pressure required for starting.

Description

technical field [0001] The invention relates to a valve, in particular to a hydraulic control check valve. Background technique [0002] The hydraulic control check valve is a component widely used in machine tools, engineering machinery, ships and military technical equipment. It can allow the hydraulic pressure to flow in reverse after it is opened. This type of check valve is mainly used in hydraulic circuits. isolation. When the hydraulic control check valve is working, rely on the hydraulic pressure to push the valve core on the valve seat first, and then push the follow-up parts connected to the outlet of the hydraulic control check valve to move. When the follow-up parts want to reset, use the valve body The piston in the valve pushes away the valve core on the valve seat, so that the liquid that pushes the follow-up parts backflows to reset the follow-up parts. The impact force of the parts is relatively large, which makes the starting of the subsequent parts unsta...

AI Technical Summary

Problems solved by technology

When the hydraulic control check valve is working, rely on the hydraulic pressure to push the valve core on the valve seat first, and then push the follow-up parts connected to the outlet of the hydraulic control check valve to move. When the follow-up parts want to reset, use the valve body The piston in the valve pushes away the valve core on the valve seat, so that the liquid that pushes the follow-up parts backflows to reset the follow-up parts. The impact force of the components is relatively large, which makes the starting of the subsequent components unstable, and the hydraulic pressure (ie power) required for starting is relatively large

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