Non-return valve with valve housing

A technology of one-way valve and valve sleeve, which is applied in the field of hydraulic control valves, can solve the problems affecting the service life of the cone valve, small guide, poor motion stability, etc., and achieve the effect of enhanced life, less leakage and good sealing

Inactive Publication Date: 2009-07-01
SHANGHAI LIXIN HYDRAULIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a large diameter reduction ratio between the head of the traditional cone valve and the cone valve stem, and there is stress concentration at the shoulder of the cone valve, which will affect the service life of the cone valve
Due

Method used

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  • Non-return valve with valve housing
  • Non-return valve with valve housing

Examples

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Example Embodiment

[0026] Examples:

[0027] Such as figure 1 As shown in the figure, when hydraulic oil flows in from port P1 and flows out from port P2, the plate check valve shown in the figure is in a closed state, and the oil drain port 13 communicates with the oil outlet port P2, and the hydraulic oil enters from the P1 cavity. When the opening pressure of the spring 7 is higher than the opening pressure of the spring 7, the valve core 9 moves to the right against the opening pressure of the spring 7, so that the P1 and P2 chambers communicate. As the valve core moves to the right, the area of ​​the oil ports of the P1 and P2 chambers increases until the valve The right end surface of the core 9 is in contact with the left end surface of the spring seat 11, the area of ​​the oil passage is the largest, the valve core 9 stops moving, and the two chambers are fully communicated. When the pressure of the oil into the oil chamber is less than the opening pressure of the spring 7, the valve core 9...

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PUM

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Abstract

A check valve with a valve pocket, relating to the field of hydraulic control valve, comprises a valve body, a main hole is opened in the center of the valve body, the right end of the main hole of the valve body is sealedly fixed by using a screw plug, characterized in that, an oil inlet P1 and an oil outlet P2 are opened on the bottom of the valve body and communicated with the main hole, the valve pocket is arranged in the main hole, and between the oil inlet P1 and the oil outlet P2, the inner cavity of the valve pocket is arranged with a valve core the inner cavity of which is sleeved with a spring, one end of the spring is connected with the inner wall of the valve core, the other end of which is fixed on a spring base which is connected with the screw plug for sealing at the right end of the valve body. The check valve with a valve pocket has the beneficial effect that, due to connect the valve body and the valve core through the valve pocket, the impact vibration force is directly applied on the valve pocket, the impact vibration to the valve body is reduced, so the service life of the valve body is prolonged. The structure of the valve core is changed from the cone valve to cone pocket, the contact area in the movement process of the valve core is increased, thereby improving the movement stability of the valve core.

Description

Technical field: [0001] The invention relates to the field of hydraulic control valves, in particular to a plate-type one-way valve for controlling one-way flow of an oil circuit. Background technique: [0002] At present, the valve core of the traditional plate check valve is a cone valve structure, the valve core is in direct contact with the valve body, and the head of the cone valve has a large impact and vibration on the valve body, which reduces the service life of the valve body. There is a large diameter reduction ratio between the head of the traditional cone valve and the cone valve stem, and there is stress concentration at the shoulder of the cone valve, which will affect the service life of the cone valve. Due to the small contact surface between the spool and the valve body of the traditional plate check valve, the guide is small and the stability of the movement is poor, so it is not suitable for applications where the opening and closing are frequent. Inven...

Claims

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Application Information

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IPC IPC(8): F16K15/02F15B13/02
Inventor 袁才富朱剑根张妮沈至伟
Owner SHANGHAI LIXIN HYDRAULIC
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