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Valve element assembly of safety valve

A technology of valve core components and safety valves, applied in safety valves, lift valves, balance valves, etc., can solve the problems of small liquid hole diameter, reduced service life of safety valves, small discharge flow, etc., to achieve axial deformation reduction Small, reduce pressure fluctuation, reduce the effect of axial displacement

Inactive Publication Date: 2016-05-25
JULONG GROUP WUHU XINGLONG HYDRAULIC
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  • Abstract
  • Description
  • Claims
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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

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  • Valve element assembly of safety valve
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  • Valve element assembly of safety valve

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Embodiment Construction

[0030] 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.

[0031] Such as Figure 1 to Figure 8 As shown, it is a safety valve adopting the spool assembly of the present invention, the safety valve includes a valve sleeve 3 with a liquid discharge hole 31, a liquid inlet joint 8 with a liquid inlet hole 84, and a valve housing 10 connected to the valve sleeve 3 With the reset mechanism arranged inside the valve casing 10, the liquid inlet hole 84 communicates with the liquid discharge hole 31 through the unloading chamber 32 inside the valve sleeve 3, and the three form an overflow channel of the safety valve. In order to solve the problems in the prior ...

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Abstract

The invention discloses a valve element assembly of a safety valve. The valve element assembly comprises a movable nut and a valve element which is arranged in the nut and is used for controlling the on / off of a liquid feeding hole of the safety valve; the valve element is provided with a plug capable of being inserted into the liquid feeding hole of the safety valve. The valve element assembly disclosed by the invention is applied to the safety valve, and can be used for controlling the on / off of an oil path from the liquid feeding hole to a liquid discharging hole; when the valve element assembly is far away from a liquid feeding connector, large-flow overflowing can be realized and the flow of the safety valve is greatly improved; axial displacement of the valve element assembly can be shortened by rapid overflowing within short time; the axial displacement of the valve element assembly is shortened so that axial deformation of a resetting spring can be reduced; finally, pressure fluctuation can be reduced.

Description

technical field [0001] The invention belongs to coal mine fully mechanized mining hydraulic support, in particular, the invention relates to a valve core assembly of a 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 vibr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/06F16K17/164F16K1/42F16K1/36F16K29/00E21D15/51
CPCE21D15/512F16K1/36F16K1/42F16K17/06F16K17/164F16K29/00
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
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