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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  • Summary
  • Abstract
  • Description
  • Claims
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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 hydraulic shock, low service life and adaptability and difficult maintenance of the column hydraulic control check valve in the prior art

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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Embodiment Construction

[0010] Such as figure 1 shown. The structure of the present invention is suitable for the column control of the large support in the middle and thick coal seams, including a joint 1, a compact flat sealing valve body 2 and a plug-in hydraulic valve core assembly. There is a piston 3 in the plug-in hydraulic spool assembly, and the piston is fixed on the ejector rod 4 by the shaft retainer ring to form an assembly. The ejector rod assembly is integrated with the liquid inlet valve sleeve 6 through a large spring 5 to form a ejector rod recovery chamber. When the control pressure liquid is closed and stopped, the ejector rod 4 is reset in time, the liquid inlet valve sleeve 6 and the large valve core 7 in contact with it form a metal hard seal, and at the same time, the inside of the large valve core 7 is in contact with the small valve core 8 that is unloaded by the pilot . The end of the small spool 8 forms a pressure recovery chamber through the spring 9 and the screw sleev...

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PUM

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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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