Plug-in mounting stand column hydraulic control one-way valve

A hydraulically controlled one-way valve, plug-in technology, applied in the direction of pillars/supports, mining equipment, earthwork drilling and mining, etc., can solve the problem of low service life and adaptability, difficult maintenance, high hydraulic impact of column hydraulically controlled one-way valves, etc. problems, to achieve the effect of easy installation and maintenance, long service life and high reliability

Inactive Publication Date: 2011-07-20
JULONG GROUP WUHU XINGLONG HYDRAULIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a plug-in column hydraulic control check valve to solve the problems of high h

Method used

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  • Plug-in mounting stand column hydraulic control one-way valve
  • Plug-in mounting stand column hydraulic control one-way valve

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Example Embodiment

[0010] Such as figure 1 Shown. The structure of the invention is suitable for the column control of the large-scale support in the medium and thick coal seams, and includes a joint 1, a compact-structure plane sealing valve body 2 and a plug-in hydraulic valve core assembly. There is a piston 3 in the plug-in hydraulic valve core assembly. The piston is fixed on the ejector rod 4 by a shaft with a retaining ring to form an assembly. The ejector rod assembly is integrated with the inlet valve sleeve 6 through a large spring 5 to form a ejector rod recovery cavity. When the control pressure liquid is closed and stopped, the ejector rod 4 is reset in time, the inlet valve sleeve 6 and the large valve core 7 contacting it form a metal hard seal, and the inside of the large valve core 7 is in contact with the pilot unloading small valve core 8 . The end of the small valve core 8 forms a pressure recovery cavity with the screw sleeve 10 through the spring 9 to close the working cav...

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Abstract

The invention discloses a plug-in mounting stand column hydraulic control one-way valve, which comprises a valve body, wherein a connector is arranged at one end of the valve body, and a threaded sleeve is arranged at the other end of the valve body; a threaded plug is arranged outside the threaded sleeve; a plug-in mounting hydraulic valve core component is arranged in the valve body, and comprises a liquid inlet valve sleeve, an ejector rod, a piston and a large spring; a large valve core and a small valve core are formed in the threaded sleeve; and a spring is arranged at the rear end of the small valve core. The hydraulic control one-way valve has a simple structure, high system integrated level and reliability and long service life, is easy to install and maintain, and is repaired directly, simply, conveniently and reliably by replacing plug-in mounting hydraulic valve core component.

Description

technical field [0001] The invention relates to the field of column hydraulic control one-way valves, in particular to a plug-in column hydraulic control one-way valve used for hydraulic circuits of hydraulic supports in coal mines with medium and thick coal seams. Background technique [0002] Since the beginning of fully mechanized mining in coal mines, due to the different coal mining environments, there have been stricter requirements on hydraulic supports and supporting equipment. In recent years, the coal mining industry has gradually improved, and the application of large supports has become more and more extensive. As a manufacturer with more than 30 years of experience in the production of hydraulic support valves, through independent development, it has launched a reliable, long service life, maintenance-free The convenient column hydraulic control one-way valve adopts the pilot unloading method, which can adapt to the working conditions of high pressure and large ...

Claims

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Application Information

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