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Valve element assembly of high-flow safety valve

A technology of large-flow safety valve and spool assembly, which is applied in mining equipment, earthwork drilling, pillars/brackets, etc., can solve problems such as safety valve failure and seal ring damage, and achieve weakened erosion, improved sealing effect, and improved Effect of Seal Reliability and Service Life

Active Publication Date: 2014-11-19
JULONG GROUP WUHU XINGLONG HYDRAULIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of safety valve adopts a straight-through unloading method, which is sealed by a single O-ring. The valve core moves back and forth. valve failure

Method used

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  • Valve element assembly of high-flow safety valve
  • Valve element assembly of high-flow safety valve
  • Valve element assembly of high-flow safety valve

Examples

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Effect test

Embodiment Construction

[0040] The specific embodiment of the present invention will be described in further detail by describing the embodiments below with reference to the accompanying drawings, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and contribute to its implementation.

[0041] like figure 1 Shown is a large flow safety valve adopting the spool assembly of the present invention, which includes a valve casing 9, a valve sleeve 5, a valve core 6, a joint 4, a pressure regulating screw 1, a return spring 2 and a spring seat 3, and a valve sleeve 5 And the spool 6 constitutes a spool assembly.

[0042] like Figure 1 to Figure 14 As shown, the valve casing 9 of the large flow safety valve is a cylindrical member with open ends and a hollow interior. The pressure regulating screw 1 and the joint 4 are threadedly connected to the valve casing 9 at opposite ends of the...

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PUM

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Abstract

The invention discloses a valve element assembly of a high-flow safety valve. The valve element assembly comprises a valve sleeve and a valve element, and the safety valve further comprises a connector and a valve casing. One end of the valve sleeve is inserted into the connector, the other end of the valve sleeve is inserted into the valve casing, the valve sleeve is provided with a first liquid through hole and a second liquid through hole, and the valve element is inserted into the valve sleeve. A first sealing structure is arranged between the valve element and the valve sleeve, is positioned between the first liquid through hole and the second liquid through hole, and comprises a first sealing ring and a second sealing ring, the valve element is sleeved with the first sealing ring, and the first sealing ring is sleeved with the second sealing ring. The valve element comprises a large-diameter body and a small-diameter body inserted into the large-diameter body. According to the valve element assembly, the sealing structure formed by two matched sealing rings is arranged between the valve element and the valve sleeve, the first sealing ring is a special-shaped ring with a positioning groove formed in the circumference of the external circle, the second sealing ring is embedded into the positioning groove to extrude the first sealing ring, therefore, the first sealing ring is in tighter contact with the valve element, and sealing effect between the valve element and the valve sleeve is improved.

Description

technical field [0001] The invention relates to a coal mine fully mechanized mining hydraulic support, in particular to a valve core assembly of a large-flow safety valve. Background technique [0002] With the large-scale implementation and development of coal mine fully mechanized mining hydraulic supports, fully mechanized mining work has more and more stringent requirements for hydraulic supports, so there are further requirements for the safety valve of the hydraulic cylinder of the protection support, especially for the safety valve There are further requirements for the service life and reliability of the hydraulic support. When the pressure from the top of the hydraulic support causes passive force, whether the safety valve can unload in a short time, fully and stably under the condition of high pressure directly affects the service life of the support. and support security. It will not only damage seals, pipes and hydraulic components, but also cause vibration and ...

Claims

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Application Information

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IPC IPC(8): E21D15/51E21D23/16
Inventor 李福洪朱述群
Owner JULONG GROUP WUHU XINGLONG HYDRAULIC
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