A Valve Sleeve with Automatic Gap Compensation

A gap compensation and valve sleeve technology, applied in the direction of lift valves, valve devices, engine components, etc., can solve the problems of high water rigidity, easy leakage of hydraulic components, low viscosity, etc., to reduce leakage, overcome difficult processing, Simple and convenient processing effect

Active Publication Date: 2015-10-28
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high rigidity and low viscosity of water, hydraulic components are inevitably prone to leakage

Method used

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  • A Valve Sleeve with Automatic Gap Compensation
  • A Valve Sleeve with Automatic Gap Compensation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] figure 1 It is a structural diagram of the present invention, which includes a valve sleeve base (1), an elastic sleeve (2), an annular groove (3), and a circumferential hole (4); the elastic sleeve (2) is an elastic element, which is injected into the valve The sleeve base (1) makes the two form an assembly, and the valve core (5) is inserted into the elastic sleeve to fit with the gap; the inner surface of the valve sleeve base (1) has an annular groove (3), and on the valve sleeve base (1) There are four evenly distributed circumferential holes (4) connected with the annular groove (3) along the circumferential direction. With the increase of the number of circumferential holes (4), the force of the elastic sleeve (2) will be more uniform. The elastic sleeve (2) is an engineering plastic elastic element, and its material is PEEK.

[0014] When working, the fluid medium enters the annular groove (3) through the circumferential hole (4). The circumferential hole and t...

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PUM

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Abstract

The invention relates to a valve sleeve with an automatic clearance compensation function. The valve sleeve is particularly applicable to a cartridge valve of hydraulic media such as seawater and fresh water, can also be used for a cartridge valve using the traditional hydraulic oil as the medium and solves the problem of the sealing between a valve sleeve and a valve core of a traditional hydraulic cartridge valve. The valve sleeve comprises a valve sleeve base body, an elastic sleeve, an annular groove and circumferential holes, wherein the elastic sleeve is an elastic element, and during the processing, the elastic sleeve is arranged on the base body through injection molding so that the elastic sleeve and the base body become an assembly. During the assembly, the small clearance matching is adopted, the valve core is arranged in the valve sleeve, the annular groove is formed in the inner surface in the valve sleeve base body, in addition, four uniformly distributed small holes are formed in the valve sleeve in the circumferential direction, and the communication of axial holes and the annular groove is realized. The valve sleeve realizes the sealing effect in the work process of the cartridge valve, the leakage quantity at the matching part of the valve sleeve and the valve core of the cartridge valve is reduced, the ring-free sealing is realized, in addition, the processing is easy, and the practicability is high.

Description

technical field [0001] A valve sleeve with automatic clearance compensation, especially suitable for cartridge valves with hydraulic media such as seawater and fresh water, and can also be used for cartridge valves with traditional hydraulic oil as the medium to reduce the valve core (5) and valve sleeve The purpose of the joint leakage belongs to the field of fluid transmission and control. Background technique [0002] Pure water hydraulic technology is a new technology that replaces traditional mineral oil with natural fresh water or sea water as the working medium of the hydraulic system. In recent years, as people pay more and more attention to safety and sanitation, energy conservation and environmental protection, and marine development, pure water hydraulic technology has become a frontier research direction in the international hydraulic industry. However, due to the high rigidity and low viscosity of water, the hydraulic components are inevitably prone to leakage....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/32
Inventor 聂松林陈明辉刘向阳潘娜张小军张振华
Owner BEIJING UNIV OF TECH
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