Unlock instant, AI-driven research and patent intelligence for your innovation.

A precision pressure regulating type direct acting overflow valve

A technology of direct-acting relief valve and pressure regulation, which is applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problems of controlling oil pressure changes and affecting the pressure control accuracy of relief valves, and achieves Reliable work, simple structure, overcome the effect of controlling pressure fluctuations

Inactive Publication Date: 2016-12-28
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the overflow flow of the overflow valve seriously affects the pressure control accuracy of the overflow valve, because: when the overflow flow of the overflow valve changes, the opening of the valve changes accordingly, and the compression of the spring changes accordingly. The spring force changes, resulting in a change in the actual control oil pressure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A precision pressure regulating type direct acting overflow valve
  • A precision pressure regulating type direct acting overflow valve
  • A precision pressure regulating type direct acting overflow valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the precision pressure regulating direct-acting overflow valve of the present invention includes a valve seat 1, a valve core 2, a fixed screw rod 3, a yoke 4, a nut 5, a permanent magnet 6, a nut 7, a spring 8, and a spring seat 9 , Valve body 10 and pressure regulating screw 11, etc. The yoke 4 is a magnetic conductor made of a magnetic permeable material.

[0020] The shell of the valve seat 1 is provided with an oil inlet P and an oil return port O. The valve core 2 can slide along the inner cavity of the valve seat 1. Under the action of the spring 8 in the initial state, the shoulder 22 of the valve core 2 is limited to The step 21 of the valve seat 1; the right end surface of the valve core 2 is rigidly connected with the yoke 4, and the yoke 4 is a magnetically permeable material, which provides a magnetic circuit for the per...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a precise pressure regulating type direct acting overflow valve, which comprises a valve seat (1), a valve core (2), a fixed screw (3), a magnetic yoke (4), a permanent magnet (6), a spring ( 8), spring seat (9), valve body (10) and pressure regulating screw (11), the valve core (2) slides along the inner cavity of the valve seat (1), the right end surface of the valve core (2) Connected with the yoke (4), the permanent magnet (6) is fixed on the fixed screw (3), the fixed screw (3) is connected with the valve core (2), and the pressure regulating screw (11) is connected with the valve body (10) , the pressure regulating screw (11) is in rigid contact with the right end face of the spring seat (9); the left end face of the spring seat (9) is in rigid contact with the right end face of the spring (8), and the left end face of the spring (8) is in contact with the The right end face of the spool (2) is in rigid contact. The invention overcomes the fluctuation of the control pressure caused by the change of the overflow flow of the direct-acting overflow valve, and realizes the precise control of the oil pressure.

Description

technical field [0001] The invention relates to an overflow valve in a fluid control system, in particular to a precise pressure-regulating direct-acting overflow valve. Background technique [0002] In the hydraulic control system, the direct-acting relief valve realizes the control of the oil pressure through the balance of the oil pressure and the spring force. Invention patent 200380110003.0 discloses a direct control overflow valve with a seat piston in the longitudinal bore of the valve sleeve, the piston is guided radially in its guide area by two circular guide elements spaced apart from each other. In the longitudinal drilling, the vibration and noise of the piston when the valve port is opened and closed is reduced, and the service life is increased. However, the overflow flow of the overflow valve seriously affects the pressure control accuracy of the overflow valve, because: when the overflow flow of the overflow valve changes, the opening of the valve changes a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
Inventor 李其朋王新华
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY