Hydraulic control one-way valve

A hydraulic control check valve and valve body technology, applied in the field of hydraulic control valves, can solve the problem that the valve opening of the hydraulic control check valve cannot be fine-tuned and controlled, and achieve the effect of fine-tuned flow control

Active Publication Date: 2016-06-22
广西中源机械有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a hydraulically controlled check valve capable of fine-tuning the opening of the valve port in view of the problem that the opening of the valve port of the existing hydraulically controlled check valve cannot be fine-tuned and controlled.

Method used

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  • Hydraulic control one-way valve

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Embodiment Construction

[0016] The specific implementation will be described below in conjunction with the accompanying drawings.

[0017] The hydraulic control check valve in the present invention includes a valve body 16, and a working oil passage 19 is arranged in the valve body. The flow from the working port to the working C2 oil port is forward flow, and the flow from the working C2 oil port to the working V2 oil port is reverse flow. The main spool 1 is arranged on the working oil passage 19, and the main spool 19 is located in the valve body. Axial slide is made in 16, and this axial direction is defined as left-right direction, main spool moves to the left, and working oil passage 19 times main spool cuts off and closes, and main spool moves to the right, and working oil passage 19 is opened.

[0018] A valve sleeve 6 is arranged in the valve body 1, and the valve sleeve 6 is inserted into the valve body 16 through a threaded connection. 4, pressure regulating spring 5, adjusting screw 9. ...

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Abstract

The invention relates to a hydraulic control one-way valve, aims to solve the problem of incapability of finely adjusting and controlling the openness of a a traditional hydraulic control one-way valve, and provides the hydraulic control one-way valve. Oil ports V2 and C2 are formed in a valve body; a main valve element, a pilot valve element, a return spring, a spring base axially sliding, a pressure adjusting spring and a spiral adjusting structure for adjusting the pretightening elastic force of the pressure adjusting spring are arranged in the valve body; a cavity S2 on the left side of the main valve element is communicated with the oil port C2 by a first oil way; the pilot valve element is that the diameter of the left end of a step shaft is smaller than the diameter of the right end; in the step position and a cavity S4 of the pilot valve element, the cavity S4 is communicated with a pilot control oil port; a small-diameter shaft of the pilot valve element is matched with a blind hole in the right end of the main valve element; a cavity S5 is formed between the pilot valve element and the spring base, and is communicated with an oil return port; the return spring is positioned in the cavity S5; and a through hole is formed in the pilot valve element as a pressure relief oil way for communicating the blind hole of the main valve element with the cavity S2. The one-way valve can be opened forwards and reversely, and can realize fine adjustment and control of the flow.

Description

technical field [0001] The invention relates to a hydraulic control 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, which usually allows reverse flow after the hydraulic pressure is opened. This type of valve is used for the isolation of the part of the hydraulic circuit, that is, to prevent the load from falling when the pipeline fails and the load drops slowly due to the leakage of the spool. It is relatively difficult to control the opening of the valve port in the existing hydraulic control check valve, and cannot perform the function of fine-tuning the opening of the valve port. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a hydraulically controlled check valve capable of fine-tuning the opening of the valve port in view of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/18F16K31/12F15B13/02
CPCF15B13/027F16K31/12F16K15/1826
Inventor 朱庆轩王宜前蒋拓
Owner 广西中源机械有限公司
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