Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Insertion type pre-pressing valve

A pre-pressure valve and cartridge-type technology, which is applied in the direction of lift valves, valve devices, engine components, etc., can solve the problems of poor pressure resistance, easy sticking of the valve core, large volume, etc., and achieve small volume, reliable operation, and communication strong streaming effect

Active Publication Date: 2019-01-18
TAIZHONG GRP YUCI HYDRAULIC IND
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of the existing preload valve, such as large volume, easy jamming of the valve core, poor pressure resistance and easy damage during installation and disassembly, and provide a cartridge type preload valve

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
  • Insertion type pre-pressing valve
  • Insertion type pre-pressing valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] Such as figure 1 and figure 2 As shown, a cartridge preload valve in this embodiment includes a valve seat 1, a valve core 2, a guide sleeve 3, a first spring seat 4, a spring 5, a second spring seat 6 and a wire retaining ring 7 , the valve seat 1 is a hollow cylinder, the inner hole is a through hole with the same diameter, the upper edge of the inner hole of the valve seat 1 is kept sharp and cooperates with the taper surface of the valve core 2 to form a line seal to achieve oil sealing, the The lower end of the outer side of the valve seat 1 is provided with an outer circular step, so that it can be limited in the valve body; the valve core 2 is composed of a conical truncated cone and a hollow cylindrical guide rod, and the hollow cylindrical guide rod is arranged at the center of the top surface of the conical truncated The hollow hole ...

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 relates to an insertion type pre-pressing valve, belongs to the technical field of control valves, and mainly solves the technical problem that an existing pre-pressing valve is large involume, has an easily stuck valve element, is poor in pressure resistance and easily damaged during installation and disassembly. According to the technical scheme, the insertion type pre-pressing valve comprises a valve seat, the valve element, a guide sleeve, a first spring seat, a spring, a second spring seat and a wire retaining ring, wherein the valve seat is a hollow cylinder, the lower endof the outer side of the valve seat is provided with an excircle step, so that the valve seat is limited in a valve body; the valve element is composed of a cone frustum and a hollow cylinder guide rod, and the valve element is arranged at the upper end of the valve seat; the guide sleeve is a hollow cylinder, the hollow cylinder guide rod of the valve element is arranged in a guide hole in the lower middle portion of the guide sleeve, the first spring seat is arranged at the top end of the hollow cylindrical guide rod of the valve element, the spring is arranged on the first spring seat, thesecond spring seat is arranged on the spring, and the wire retaining ring is arranged in a retaining ring groove formed in the upper portion of a spring mounting hole of the guide sleeve.

Description

technical field [0001] The invention relates to a plug-in pre-pressure valve, which belongs to the technical field of control valves. Background technique [0002] Directional valves are widely used and are indispensable control elements in hydraulic systems. In the hydraulic system, the pilot-operated reversing valve is often used in the large-flow system. If the main oil circuit has no pressure and there is no separate pilot oil supply circuit, a pre-pressure valve is installed at this time to establish the minimum pilot pressure and manipulate the main valve core. Make the main oil circuit work. [0003] The currently commonly used preload valve is a split-type cartridge structure, or the valve body is directly processed into the valve seat, which mainly has the following disadvantages: 1. The volume is large, and the application occasions are limited; 2. The valve core is easy to open and close. 3. The material strength of the valve body is not high, and the pressure r...

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 Applications(China)
IPC IPC(8): F16K1/38F16K1/42
CPCF16K1/38F16K1/42
Inventor 李广珍李东海
Owner TAIZHONG GRP YUCI HYDRAULIC IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com