External reversal valve for double-acting plunger type vertical post
A plunger-type, double-acting technology, applied in pillars/brackets, mining equipment, earthwork drilling, etc., can solve the problems of inconvenient installation and maintenance, difficult promotion and use, high production cost, etc., and achieves convenient installation and maintenance and good sealing effect , long service life effect
Inactive Publication Date: 2012-07-25
XUZHOU ELECTROMECHANICAL DEPT JIANGSU TIANNENG GROUP
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- Abstract
- Description
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AI Technical Summary
Problems solved by technology
The reversing valve used on the double-acting plunger column is generally a built-in valve with a complicated structure and inconvenient installation and maintenance.
The externally replaced reversing valves that have appeared in recent years are too complicated in structure, high in production cost, and difficult to popularize and use.
Method used
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Embodiment Construction
[0013] As shown in the attached drawing: an external displacement reversing valve for a double-acting plunger type column, including a valve body 2, a valve core 5, a spring 8 and a plurality of sealing rings. The center of the valve body 2) is made with a step hole, and the upper end of the step hole is provided with a joint seat 1. The inner hole of the joint seat 1 is C cavity C, and the joint seat 1 passes through the C cavity C and the inner hole of the valve body 2. Through, there is a sealing ring I3 between the outer circle of the joint seat 1 and the inner hole of the valve body 2, and the lower end of the joint seat 1 is provided with a sealing ring II4. The spool 5 is slip-fitted and inserted in the stepped circular hole of the valve body 2 , a spring 8 is arranged at the bottom of the spool 5 , and a sealing ring III6 is arranged at the lower end of the spool 5 . It is characterized in that: the valve core 5 is a cylinder without a through hole in the center. The ...
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The invention discloses an external reversal valve for a double-acting plunger type vertical post, which relates to mining equipment. The reversal valve comprises a valve body (2), a valve core (5), a spring (8) and sealing rings, wherein the valve core (5) is a cylinder of which the center is not provided with a through hole; a post lowering pipe joint (2-1) is arranged on the middle part of the valve body (2), is communicated with the inner hole of the valve body (2) through a cavity A and is connected with a vertical post lowering joint (15) through a post lowering liquid inlet pipe (14); a post lifting pipe joint (2-2) is arranged on the lower part of the valve body (2), is communicated with the inner hole of the valve body (2) through a cavity B and is connected with a tee joint (11) through an oil return pipe (17); a sealing ring II (4) and a sealing ring II (6) are planar annular sealing rings; one end of the tee joint (11) is connected with an outer engine hydraulic station (18) through a post lifting liquid supply pipe (10) and a post lifting liquid supply valve (19), and the other end of the tee joint (11) is connected with a vertical post lifting joint (13) through a post lifting liquid inlet pipe (12); and a joint seat (1) is connected with the hydraulic station (18) through a post lowering liquid supply pipe (9) and a post lowering liquid supply valve (20).
Description
technical field [0001] The invention relates to a mine equipment, in particular to an external replacement reversing valve for a double-action plunger type column supported by a coal mining working face under a coal mine. Background technique [0002] The hydraulic support is an important support equipment for the working face of the coal mine, and the column is the key component for the hydraulic support to carry and realize the lifting action. In recent years, the double-acting plunger column has the function of two-way liquid injection and reversing, and the speed of lowering the column is relatively fast, and the advancing speed of the coal mining face is high, and the production efficiency is high, so it is widely used. The reversing valve used on the double-acting plunger column is generally a built-in valve with a complicated structure and inconvenient installation and maintenance. The externally displaced directional valves that have appeared in recent years have to...
Claims
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IPC IPC(8): E21D15/51
Inventor 孟昭扑张绪平江利孙智张德坤温荣升
Owner XUZHOU ELECTROMECHANICAL DEPT JIANGSU TIANNENG GROUP