CN201460924U - Intrinsic safety type electric pilot operated directional control valve for mine - Google Patents
Intrinsic safety type electric pilot operated directional control valve for mine Download PDFInfo
- Publication number
- CN201460924U CN201460924U CN 200920102613 CN200920102613U CN201460924U CN 201460924 U CN201460924 U CN 201460924U CN 200920102613 CN200920102613 CN 200920102613 CN 200920102613 U CN200920102613 U CN 200920102613U CN 201460924 U CN201460924 U CN 201460924U
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- valve
- directional control
- pilot operated
- operated directional
- valve sleeve
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Abstract
The utility model relates to a supporting device of a hydraulic supporting frame electric-hydraulic control system, in particular to an intrinsic safety type electric pilot operated directional control valve for a mine. The valve solves the problem that valve core components in pilot operated directional control valves adopted by existing electric pilot operated directional control valves can not be installed and disassembled conveniently. The valve comprises an electromagnetic pilot valve and a pilot operated directional control valve, the valve core component of the pilot operated directional control valve comprises a liquid inlet valve sleeve, a valve holder and a return liquid valve sleeve, wherein a tubular piston is arranged in the return liquid valve sleeve, valve cores are arranged in the tubular piston and the liquid inlet valve sleeve, the liquid inlet valve sleeve comprises a vale sleeve body and a screw plug, the inner wall of the screw plug and the outer wall of the valve sleeve body are fixedly connected through a rolling friction structure. The valve seat is arranged in the return liquid valve sleeve and is statically connected with the inner wall of the return liquid valve sleeve, the position is located between the tubular piston and the liquid inlet valve sleeve, and opposite end portions of two valve sleeves of the return liquid valve sleeve and the liquid inlet valve sleeve form key joint. The supporting device has simple, rational and compact structure, convenient installation and disassembly, and convenient maintenance, and is applicable to use and operation in underground severe working environment with complicated conditions.
Description
Technical field
The utility model relates to the corollary equipment of the electrohydraulic control system of one of modernized coal comprehensive mining outfit-hydraulic support, specifically is the mining intrinsic safety electro-hydraulic control reversing valve that is used for the coal mine underground hydraulic support frame control system as executive component.
Background technology
The coal fully-mechanized mining is the important symbol of coal mining technical modernization.The high-yield and high-efficiency comprehensive mining is the embodiment of a national coal production efficient, mining level, and the comprehensive mechanization equipment is made the embodiment of a national manufacturing industry scientific and technological level especially.The Ministry of Science and Technology carries out development and production to producing the special project verification of the ten-million-ton scale big mining and high comprehensive mining outfit of mine (hydraulic support) per year, and hydraulic support electric-hydraulic control reversing valve development project is put into national Eleventh Five-Year Plan emphasis and supports project.
When hydraulic support uses in the down-hole, by mining intrinsic safety electro liquid valve the direction of liquid stream in the support hydraulic system is controlled, realize column lifting, oil cylinder and or jack flexible, and then finish hydraulic support stand, move frame, various feature operations such as pushing and sliding, anti-down, caving coal.Described mining intrinsic safety electro-hydraulic control reversing valve by electromagnetic priority valve, and the pilot operated directional control valve that drives of electromagnetic priority valve constitute.In modernized high-yield and high-efficiency comprehensive mining to mining intrinsic safety electro-hydraulic control reversing valve require high, need possess safety, fast, reliable, can provide the working solution (emulsion) of high-pressure high-flow, at the scene can continuous operation, characteristics such as less trouble, assembling be easy to maintenance.And in the pilot operated directional control valve that existing mining intrinsic safety electro-hydraulic control reversing valve adopts, feed liquor valve pocket, valve seat, spool and trunk-piston in its core assembly, liquid return valve jacket are packed in the valve body of pilot operated directional control valve successively, the tail end of liquid return valve jacket and valve body screw thread are fixed, promptly when liquid return valve jacket is installed, be to screw in the valve body, in liquid return valve jacket screw-in process, cause back-up ring, sealing ring and valve interior wall clamping stagnation inevitably, be difficult for installation, and easily cause the material affinity between valve pocket and the valve body; And, when dismounting, must each parts in the core assembly be taken out one by one very inconvenience of i.e. dismounting by additional device.
Summary of the invention
The utility model provides a kind of mining intrinsic safety electro-hydraulic control reversing valve for the problem of the core assembly installing/dismounting inconvenience in the pilot operated directional control valve that solves existing electric-hydraulic control reversing valve employing.
The utility model is to adopt following technical scheme to realize: mining intrinsic safety electro-hydraulic control reversing valve, comprise electromagnetic priority valve, pilot operated directional control valve by the electromagnetic priority valve driving, the core assembly of pilot operated directional control valve comprises the feed liquor valve pocket that is installed on from inside to outside in the liquid controlled reversing valve body, valve seat, liquid return valve jacket, be provided with trunk-piston in the liquid return valve jacket with its inwall movable sealing, be provided with spool in trunk-piston and the feed liquor valve pocket, the two ends of spool respectively with trunk-piston, the inwall movable sealing of feed liquor valve pocket, and spool is with the back-moving spring that places between spool and the feed liquor valve pocket outward, liquid return valve jacket comprises the valve pocket body, with the screw plug that the liquid controlled reversing valve body is fixed with screw thread, the inwall of screw plug and valve pocket body outer wall are fixedly connected with rolling friction structure.Like this, when liquid return valve jacket is installed, there is relative motion between valve pocket body and the screw plug, promptly screw in the process of valve body at screw plug, promote the valve pocket body and stretch into valve body, do not have relative rotary motion between valve pocket body and the valve body, avoided back-up ring, sealing ring and valve interior wall clamping stagnation between valve pocket body and the valve body, be convenient to install.
In addition, valve seat places in the liquid return valve jacket, and with liquid return valve jacket inwall static seal, its position is between trunk-piston and the feed liquor valve pocket; Key connecting between liquid return valve jacket and the feed liquor valve pocket two valve pocket opposed ends. this structure makes that the core assembly of pilot operated directional control valve is integrated, core assembly monolithic plug-in mounting, dismounting have been realized, be convenient to abominable in the down-hole, operate in the situation complex operating environment, change convenient, fast.
The utility model is simple and reasonable for structure, compact, and easy installation and removal is convenient to safeguard, be suitable for abominable in the down-hole, use in the situation complex operating environment, operation.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model pilot operated directional control valve core assembly;
Fig. 3 is the enlarged drawing at A place among Fig. 2;
Among the figure: the 1-electromagnetic priority valve; The 2-valve body; 3-feed liquor valve pocket; The 4-valve seat; The 5-trunk-piston; The 6-spool; 7-valve pocket body; The 8-screw plug; The 9-back-moving spring.
The specific embodiment
Mining intrinsic safety electro-hydraulic control reversing valve, comprise electromagnetic priority valve 1, pilot operated directional control valve by electromagnetic priority valve 1 driving, the core assembly of pilot operated directional control valve comprises the feed liquor valve pocket 3 that is installed on from inside to outside in the liquid controlled reversing valve body 2, valve seat 4, liquid return valve jacket, be provided with trunk-piston 5 in the liquid return valve jacket with its inwall movable sealing, be provided with spool 6 in trunk-piston 5 and the feed liquor valve pocket 3, the two ends of spool 6 respectively with trunk-piston 5, the inwall movable sealing of feed liquor valve pocket 3, and the spool 6 outer back-moving springs 9 that place between spool 6 and the feed liquor valve pocket 3 that are with, liquid return valve jacket comprises valve pocket body 7, with the screw plug 8 that liquid controlled reversing valve body 2 is fixed with screw thread, the inwall of screw plug 8 and valve pocket body 7 outer walls are fixedly connected with rolling friction structure.Valve seat 4 places in the liquid return valve jacket, and with liquid return valve jacket inwall static seal, its position is between trunk-piston 5 and the feed liquor valve pocket 3; Key connecting between 3 liang of valve pocket opposed ends of liquid return valve jacket and feed liquor valve pocket.During concrete enforcement, the screw plug 8 of liquid return valve jacket is different from the liquid controlled reversing valve body 2 of employing stainless steel and the valve pocket body 7 of liquid return valve jacket, employing brass is made, and has avoided the material affinity problem between the valve pocket body 7 of screw plug 8 and liquid controlled reversing valve body 2, liquid return valve jacket.
Claims (2)
1. mining intrinsic safety electro-hydraulic control reversing valve, comprise electromagnetic priority valve (1), pilot operated directional control valve by electromagnetic priority valve (1) driving, the core assembly of pilot operated directional control valve comprises the feed liquor valve pocket (3) that is installed on from inside to outside in the liquid controlled reversing valve body (2), valve seat (4), liquid return valve jacket, be provided with trunk-piston (5) in the liquid return valve jacket with its inwall movable sealing, be provided with spool (6) in trunk-piston (5) and the feed liquor valve pocket (3), the two ends of spool (6) respectively with trunk-piston (5), the inwall movable sealing of feed liquor valve pocket (3), and the outer back-moving spring (9) that places between spool (6) and the feed liquor valve pocket (3) that is with of spool (6), it is characterized in that: liquid return valve jacket comprises valve pocket body (7), with the screw plug (8) that liquid controlled reversing valve body (2) is fixed with screw thread, the inwall of screw plug (8) and valve pocket body (7) outer wall are fixedly connected with rolling friction structure.
2. mining intrinsic safety electro-hydraulic control reversing valve according to claim 1 is characterized in that: valve seat (4) places in the liquid return valve jacket, and with liquid return valve jacket inwall static seal, its position is between trunk-piston (5) and the feed liquor valve pocket (3); Key connecting between liquid return valve jacket and feed liquor valve pocket (3) the two valve pocket opposed ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920102613 CN201460924U (en) | 2009-04-30 | 2009-04-30 | Intrinsic safety type electric pilot operated directional control valve for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920102613 CN201460924U (en) | 2009-04-30 | 2009-04-30 | Intrinsic safety type electric pilot operated directional control valve for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201460924U true CN201460924U (en) | 2010-05-12 |
Family
ID=42388278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920102613 Expired - Lifetime CN201460924U (en) | 2009-04-30 | 2009-04-30 | Intrinsic safety type electric pilot operated directional control valve for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201460924U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871537A (en) * | 2010-06-21 | 2010-10-27 | 山西平阳广日机电有限公司 | Mining intrinsic safety electro-hydraulic control reversing valve core component |
| CN103212235A (en) * | 2013-03-13 | 2013-07-24 | 宁波长壁流体动力科技有限公司 | Electric control backwashing filter |
| CN104675423A (en) * | 2015-02-06 | 2015-06-03 | 太原理工大学 | Two-channel kiloliter-level large-flow reversing valve |
| CN111236998A (en) * | 2019-10-29 | 2020-06-05 | 北京天地玛珂电液控制系统有限公司 | Intrinsically safe electro-hydraulic control reversing valve for aqueous medium mine |
| CN117927523A (en) * | 2024-03-25 | 2024-04-26 | 西安华创马科智能控制系统有限公司 | Electro-hydraulic reversing valve core for pure water bracket, electro-hydraulic reversing valve and hydraulic bracket |
-
2009
- 2009-04-30 CN CN 200920102613 patent/CN201460924U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871537A (en) * | 2010-06-21 | 2010-10-27 | 山西平阳广日机电有限公司 | Mining intrinsic safety electro-hydraulic control reversing valve core component |
| CN103212235A (en) * | 2013-03-13 | 2013-07-24 | 宁波长壁流体动力科技有限公司 | Electric control backwashing filter |
| CN103212235B (en) * | 2013-03-13 | 2016-02-10 | 宁波长壁流体动力科技有限公司 | Automatically controlled backwash filter |
| CN104675423A (en) * | 2015-02-06 | 2015-06-03 | 太原理工大学 | Two-channel kiloliter-level large-flow reversing valve |
| CN111236998A (en) * | 2019-10-29 | 2020-06-05 | 北京天地玛珂电液控制系统有限公司 | Intrinsically safe electro-hydraulic control reversing valve for aqueous medium mine |
| CN117927523A (en) * | 2024-03-25 | 2024-04-26 | 西安华创马科智能控制系统有限公司 | Electro-hydraulic reversing valve core for pure water bracket, electro-hydraulic reversing valve and hydraulic bracket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |