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

Magnetorheological pilot-operated overflow valve

A pilot-operated relief valve and magneto-rheological technology, applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problem of small damping force, achieve good anti-wear performance, improve magnetic induction intensity, reduce noise effect

Inactive Publication Date: 2012-03-14
KUNMING UNIV OF SCI & TECH
View PDF6 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing magneto-rheological valves are all direct-acting valves, and the damping force generated by them is relatively small. As a relief valve, they can only be used in hydraulic systems with low pressure and small flow.

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
  • Magnetorheological pilot-operated overflow valve
  • Magnetorheological pilot-operated overflow valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the content of the present invention is not limited to the stated scope.

[0020] Implementation column 1: As shown in the figure, a magneto-rheological pilot relief valve consists of a pilot valve body 8, a damping block 10, a spring 12, a guide rod 14, a main valve sleeve 15, a main valve core 16, and a main valve seat 18, main valve body 19, damper 20, plug 21 form main valve. A pilot valve is also connected to the outlet of the main valve.

[0021] The pilot valve includes an end cover 1 , a magneto-rheological valve casing 3 , a coil 4 , an iron core 5 and a valve core 7 . The iron core 5 is installed in the magneto-rheological valve housing 3. The core 5 has a through-hole structure on which the coil 4 is wound. The valve core 7 is inserted into the hole of the iron core 5. The iron core 5 and the valve core 7 A working gap 6 is formed betwee...

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 provides a magnetorheological pilot-operated overflow valve belonging to the technical field of hydraulic drive. The magnetorheological pilot-operated overflow valve comprises an end cover, an end cover seal ring, a magnetorheological valve housing, a coil, an iron core, a valve core, a pilot-operated valve body, a pilot-operated seal ring, a damp piece, a main valve housing seal ring, a spring, a guide rod seal ring, a guide rod, a main valve housing, a main valve core, a main valve seat insert, a main valve seat, a main valve body and a damper. The main valve core is in a parabolic ball shape, and the half cone angle of the valve core is larger than that of the valve seat, thus, the pressure difference between an inlet and an outlet of a cone valve can be effectively reduced; the minimum negative pressure moves backwards along a liquid flow direction, appears at the back of the valve core and is avoided appearing in the valve seat, thus, the possibility of gas etching is reduced, noise is reduced, key parts of the valve core and the valve seat are protected, and the service life of the magnetorheological pilot-operated overflow valve is prolonged.

Description

technical field [0001] The invention relates to a magneto-rheological pilot overflow valve, which belongs to the technical field of hydraulic transmission. Background technique [0002] Magnetorheological fluid is a functional fluid, which has both the fluidity of fluid and the plasticity of solid, and can realize the transition between solid and liquid in a very short time. By adjusting the magnitude of the applied magnetic field strength, the rheological properties such as viscosity and elasticity of the magnetorheological fluid can be changed rapidly. This transformation is reversible, and the viscosity can be changed steplessly with the change of the magnetic field strength. The size changes the magnetic field strength, thereby realizing the control of its mechanical properties. The magnetorheological valve designed according to the rheological characteristics of magnetorheological fluid can realize the intelligent control of pressure and flow. At present, the exis...

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): F15B13/02
Inventor 王京涛吴张永杨文勇王娴吴喜王庆辉温成卓刘云韩曲金涛高晓艳
Owner KUNMING UNIV OF SCI & TECH
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