Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Switching mechanism of safety valve

A technology of opening and closing mechanism and safety valve, which is applied in the direction of mining equipment, earthwork drilling, mine roof support, etc. It can solve the problems of small liquid hole diameter, reduced service life of safety valve, small discharge flow, etc., and achieve axial Effects of reduced deformation, reduced pressure fluctuations, and increased flow

Inactive Publication Date: 2016-03-23
JULONG GROUP WUHU XINGLONG HYDRAULIC
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The overflow channel of the existing safety valve adopts the liquid passage hole arranged around the side wall of the valve core. The diameter of the liquid passage hole is small, resulting in small discharge flow and large flow loss. The seat bears the axial force exerted by the return spring, which leads to poor stress on the valve core and large pressure fluctuations during the working process, which leads to generally unsatisfactory closing pressure of the safety valve, and eventually leads to failure of the hydraulic components connected to the safety valve. Such as excessive loss of oil in the high-pressure cylinder, resulting in waste
The sealing effect between the spool and the valve sleeve is not ideal, and the processing accuracy of the groove on the surface of the spool for installing the seal is not easy to control
In addition, the spring cavity inside the valve housing is in an open state, and the dustproof, waterproof and rustproof effects are poor, which reduces the service life of the safety 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
  • Switching mechanism of safety valve
  • Switching mechanism of safety valve
  • Switching mechanism of safety valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The following describes the specific implementation of the present invention in further detail through the description of the embodiments with reference to the accompanying drawings. The purpose is to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and Contribute to its implementation.

[0034] Such as Figure 1 to Figure 10 Shown is a safety valve using the opening and closing mechanism of the present invention. The safety valve includes a valve body 3 with a drain hole 31, a liquid inlet connector 8 with a liquid inlet hole 84, and a valve housing 9 connected with the valve body 3. And the reset mechanism arranged inside the valve housing 9, the liquid inlet 84 communicates with the liquid discharge hole 31 through the unloading cavity 32 inside the valve body 3, and the three form an overflow channel of the safety valve. In order to solve the problems in the prior a...

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 switching mechanism of a safety valve. The switching mechanism comprises a liquid inlet connector with a liquid inlet hole, and a valve element assembly capable of moving relative to the liquid inlet connector and used for controlling the opening and closing of the liquid inlet hole, wherein the valve element assembly comprises a sliding seat, a swivel nut arranged in the sliding seat, and a valve pad arranged in the swivel nut. According to the switching mechanism of the safety valve, the movable valve element assembly is arranged to be matched with the liquid inlet connector; the valve element assembly can be used for controlling the on-off of an oil path from the liquid inlet hole to a liquid discharge hole, after the valve element assembly is far away from the liquid inlet connector, mass-flow overflow can be realized, the flow rate of the safety valve is greatly increased, quick overflow in a short time can reduce the axial displacement of the valve element assembly, the axial displacement reduction of the valve element assembly can decrease the axial deformation of a reset spring, and finally pressure surge can be lowered.

Description

Technical field [0001] The invention belongs to a hydraulic support for fully mechanized coal mining. Specifically, the invention relates to an opening and closing mechanism of a safety valve. Background technique [0002] With the large-scale implementation and development of hydraulic supports for fully mechanized coal mining, the requirements for hydraulic supports for fully mechanized mining are becoming more and more stringent. This puts further requirements on the safety valves of the hydraulic cylinders of the supports, especially the safety valves. There are further requirements for the service life and reliability of the stent. When the pressure from the top of the hydraulic support causes being driven, whether the safety valve can withstand high pressure, unloading fully and stably in a short time and in a timely manner directly affects the service life of the support And support safety. It not only damages seals, pipes and hydraulic components, but also causes vibrati...

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): E21D23/16
CPCE21D23/16
Inventor 李福洪朱述群谢瑞李子昂林文彬陶兴陈伟奚光荣高俊强
Owner JULONG GROUP WUHU XINGLONG HYDRAULIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products