CN202851020U - Reversing valve for coal mine hydraulic support - Google Patents
Reversing valve for coal mine hydraulic support Download PDFInfo
- Publication number
- CN202851020U CN202851020U CN 201220565153 CN201220565153U CN202851020U CN 202851020 U CN202851020 U CN 202851020U CN 201220565153 CN201220565153 CN 201220565153 CN 201220565153 U CN201220565153 U CN 201220565153U CN 202851020 U CN202851020 U CN 202851020U
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- Prior art keywords
- valve
- sleeve
- working
- working cavities
- coal mine
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- Expired - Fee Related
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Abstract
A reversing valve for a coal mine hydraulic support comprises a valve body, an operating mechanism and valve core accessories. The reversing valve is characterized in that two symmetrical working cavities are arranged on the upper portion of the valve body along a vertical direction, one set of valve core accessory is arranged in each of the two working cavities, two circular holes which are perpendicular to the axis of the two working cavities are formed in the symmetrical line of the two working cavities, the two circular holes are respectively used as a liquid inlet and a liquid returning opening, connector holes are respectively formed in two sides of the valve body, and the two connector holes are used as working openings which are communicated with the working cavities. Each valve core accessory comprises a valve rod, a locating sleeve, an upper valve sleeve, a valve column, a middle sleeve, a valve seat, a lower valve sleeve, a valve core, an end blocking part and a spring. The contact sealed face between each valve rod and each valve column is in a rigidity seal mode. Sealing performance is reliable, structure is compact, mounting and maintaining are convenient, and service life is long.
Description
Technical field
The utility model relates to a kind of reversal valve, refers in particular to a kind of coal mine hydraulic supporting reversal valve.
Background technology
Reversal valve is that operating personnel control the essential Hydraulic Elements of mine hydraulic bracket, the high-pressure emulsion that it sends emulsion power pack here is transported to the corresponding executing agency of mine hydraulic bracket according to the requirement of pre-determined coal winning technology, to guarantee orderly normally the carrying out of coal mining production safety.Because the special nature of producing, so that the coal work field environmental condition is comparatively abominable, there is a large amount of corrosive substances, and this body structure of reversal valve is various, sealing also all is soft seal, various faults can occur unavoidably, be difficult to reach rated wear, have a strong impact on normally carrying out of downhole production.
The utility model content
The purpose of this utility model is to provide a kind of coal mine hydraulic supporting reversal valve, and its sealing performance is reliable, and compact conformation is convenient to installation and maintenance, long service life.
For achieving the above object, the solution that the utility model is taked is: a kind of coal mine hydraulic supporting reversal valve, it comprises valve body, operating mechanism and spool accessory, it is characterized in that valve body top vertically offers the working chamber of two symmetries, one cover spool accessory respectively is housed in two working chambers, offer two on the line of symmetry of two working chambers perpendicular to the circular hole of two working chamber axis, this two circular hole is respectively as inlet and liquid return hole, the valve body both sides respectively have a nipple orifice, this two nipple orifice is as working hole, working hole communicates with working chamber, described spool accessory comprises valve rod, positioning sleeve, upper valve sleeve, valve rod, intermediate sleeve, valve seat, lower valve sleeve, spool, stifled and the spring of end, valve rod contact sealing surface and are hard sealing with valve rod.
Description of drawings
Fig. 1 is structure sectional view of the present utility model.
Among the figure: 1, valve body, 2, operating mechanism, 3, the spool accessory, 4,5, working chamber, 6, inlet, 7, liquid return hole, 8,9, working hole, 10, valve rod, 11, positioning sleeve, 12, upper valve sleeve, 13, valve rod, 14, intermediate sleeve, 15, valve seat, 16, lower valve sleeve, 17, spool, 18, end is stifled, 19, spring.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.
Referring to Fig. 1, a kind of coal mine hydraulic supporting reversal valve, it comprises valve body (1), operating mechanism (2) and spool accessory (3), it is characterized in that valve body (1) top vertically offers the working chamber (4 of two symmetries, 5), two working chambers (4, one cover spool accessory (3) respectively is housed 5), two working chambers (4,5) offer two on the line of symmetry perpendicular to two working chambers (4,5) circular hole of axis, this two circular hole is respectively as inlet (6) and liquid return hole (7), valve body (1) both sides respectively have a nipple orifice, this two nipple orifice is as working hole (8,9), working hole (8,9) with working chamber (4,5) communicate, described spool accessory (3) comprises valve rod (10), positioning sleeve (11), upper valve sleeve (12), valve rod (13), intermediate sleeve (14), valve seat (15), lower valve sleeve (16), spool (17), end stifled (18) and spring (19), valve rod (10) contact sealing surface and are hard sealing with valve rod (13).
Claims (2)
1. coal mine hydraulic supporting reversal valve, it comprises valve body (1), operating mechanism (2) and spool accessory (3), it is characterized in that valve body (1) top vertically offers the working chamber (4 of two symmetries, 5), two working chambers (4, one cover spool accessory (3) respectively is housed 5), two working chambers (4,5) offer two on the line of symmetry perpendicular to two working chambers (4,5) circular hole of axis, this two circular hole is respectively as inlet (6) and liquid return hole (7), and valve body (1) both sides respectively have a nipple orifice, and this two nipple orifice is as working hole (8,9), described working hole (8,9) communicates with working chamber (4,5).
2. a kind of coal mine hydraulic supporting reversal valve according to claim 1, it is characterized in that: described spool accessory (3) comprises valve rod (10), positioning sleeve (11), upper valve sleeve (12), valve rod (13), intermediate sleeve (14), valve seat (15), lower valve sleeve (16), spool (17), end stifled (18) and spring (19), and valve rod (10) contacts sealing surface and is hard sealing with valve rod (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565153 CN202851020U (en) | 2012-10-21 | 2012-10-21 | Reversing valve for coal mine hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565153 CN202851020U (en) | 2012-10-21 | 2012-10-21 | Reversing valve for coal mine hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851020U true CN202851020U (en) | 2013-04-03 |
Family
ID=47982230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220565153 Expired - Fee Related CN202851020U (en) | 2012-10-21 | 2012-10-21 | Reversing valve for coal mine hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851020U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696795A (en) * | 2013-12-19 | 2014-04-02 | 中煤北京煤矿机械有限责任公司 | Operating valve liquid distribution plate with self-filtered feed-return liquid stopping function |
| WO2017198103A1 (en) * | 2016-05-16 | 2017-11-23 | 张未鸣 | T-shaped valve and combined reversing valve thereof |
-
2012
- 2012-10-21 CN CN 201220565153 patent/CN202851020U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696795A (en) * | 2013-12-19 | 2014-04-02 | 中煤北京煤矿机械有限责任公司 | Operating valve liquid distribution plate with self-filtered feed-return liquid stopping function |
| WO2017198103A1 (en) * | 2016-05-16 | 2017-11-23 | 张未鸣 | T-shaped valve and combined reversing valve thereof |
| TWI640705B (en) * | 2016-05-16 | 2018-11-11 | 張未鳴 | T-shaped valve and reversing valve using the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20141021 |
|
| EXPY | Termination of patent right or utility model |