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Hydraulic control check valve

A hydraulically controlled one-way valve and valve sleeve technology, applied in the field of hydraulic components, can solve problems such as waste, pollution of the underground environment, and poor versatility, and achieve the effects of improving compactness, improving versatility, and facilitating disassembly and assembly

Inactive Publication Date: 2018-03-27
HONGDA INTELLIGENT MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the pressure rises beyond the working pressure setting value of the hydraulic control check valve, it can only rely on the external overflow valve (ie safety valve) to relieve the pressure, and the outflowing liquid is discharged outside the hydraulic system, which not only pollutes the underground environment, but also causes waste
Moreover, the working pressure of the existing hydraulic control check valve cannot be adjusted, and cannot adapt to the working requirements of different pressures, and has poor versatility.

Method used

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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] Such as Figure 1 to Figure 12 As shown, the present invention provides a hydraulically controlled one-way valve, including a valve body 2, a push rod, a screw sleeve 5, a liquid inlet sleeve 3, a valve seat 11, a valve sleeve 4, a first spring 12, a second spring 13, The large spool 9 arranged inside the valve sleeve 4, the small spool 10 arranged inside the large spool 9, and the movable differential spool arranged inside the valve sleeve 4 and used to control the movement of the large spool 9 7 and a pressure regulating mechanism arranged inside the valve sleeve 4 and used to apply elas...

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Abstract

The invention discloses a hydraulic control check valve. The hydraulic control check valve comprises a valve body, a thread sleeve, a liquid inlet sleeve, a valve seat, a valve sleeve, a large valve core arranged in the valve sleeve, a small valve core arranged in the large valve core, a differential-motion valve core movably arranged in the valve sleeve and used for controlling the large valve core to move and a pressure regulating mechanism arranged in the valve sleeve and used for applying elastic acting force to the differential-motion valve core. According to the hydraulic control check valve, the differential-motion valve core is arranged in the valve sleeve so that automatic pressure relief of the hydraulic control check valve can be achieved, the working pressure of the hydraulic control check valve can be regulated by arranging the pressure regulating mechanism, therefore the hydraulic control check valve can adapt to working requirements of different pressure, and the universality of the hydraulic control check valve is improved; and the pressure regulating mechanism is arranged in the valve sleeve, the compactness of the integral structure of the hydraulic control checkvalve is improved, and dismounting and mounting are convenient.

Description

technical field [0001] The invention relates to a hydraulic component in a hydraulic circuit of a coal mine hydraulic support, in particular to a hydraulic control check valve. Background technique [0002] At present, the hydraulically controlled one-way valve used in the coal mine fully mechanized mining hydraulic support can only realize the single-cavity liquid inlet blocking and return liquid pressure relief to the matching oil cylinder or column jack. When the pressure rises beyond the working pressure setting value of the hydraulic control check valve, it can only rely on the external overflow valve (ie safety valve) to relieve the pressure, and the outflowing liquid is discharged outside the hydraulic system, which not only pollutes the underground environment, but also causes waste . Moreover, the working pressure of the existing hydraulically controlled one-way valve cannot be adjusted, cannot adapt to the working requirements of different pressures, and has poor ...

Claims

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Application Information

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IPC IPC(8): E21D15/51E21D23/16
CPCE21D15/512E21D23/16
Inventor 李子昂李福洪朱述群谢瑞
Owner HONGDA INTELLIGENT MACHINERY CO LTD
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