CN203867595U - Safety valve for mine - Google Patents
Safety valve for mine Download PDFInfo
- Publication number
- CN203867595U CN203867595U CN201420244103.8U CN201420244103U CN203867595U CN 203867595 U CN203867595 U CN 203867595U CN 201420244103 U CN201420244103 U CN 201420244103U CN 203867595 U CN203867595 U CN 203867595U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- joint
- spring
- connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000007062 hydrolysis Effects 0.000 claims abstract description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 4
- 229920002635 polyurethane Polymers 0.000 claims abstract description 4
- 239000004814 polyurethane Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 3
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The utility model relates to a safety valve for a mine. The safety valve comprises a valve body, a connector, a valve core and a valve seat, wherein the valve body is processed by a tubing, a large spring and a small spring are arranged in the valve body, one end of the large spring and one end of the small spring are propped against a spring seat, and the other ends of the large spring and the small spring are propped against a screwed plug, the valve body and the valve seat are in threaded connection with the connector respectively, the valve seat and the connector are connected, a liquid drainage cavity is formed inside, liquid drainage ports are formed in the connector and communicated with the liquid drainage cavity, the left end of the valve core is mounted in an inner hole in the valve seat, the right end of the valve core is mounted in an inner hole in the connector, an O-shaped hydrolysis resistance polyurethane ring is arranged in a groove in the left end of the valve seat, and a combined seal is arranged in a groove in the right end of the valve seat and arranged in a groove in the connector. The safety valve has a smaller size while having higher flow, and the manufacturing cost of the safety valve is reduced.
Description
Technical field
The utility model relates to the safety valve of coal mine hydraulic supporting hydraulic system.
Background technology
Safety valve is a kind ofly in system pressure overload situation, to discharge rapidly the valve that is loaded onto rated pressure, is generally arranged on hydraulic jack (jack) upper, for preventing system overload, ensures security of system.At present, the safety valve structure size that flow is larger is larger, and structure is also comparatively complicated, and valve body is that material cost or processing cost are all higher.
Utility model content
The utility model object is exactly, and overcomes prior art defect, provides a kind of result simple, economic safety valve.It comprises: valve body, joint, spool, valve seat, described valve body adopts materials in the tube machine-shaping, inside be provided with big spring and little spring, big spring and little spring one end withstand on spring base, the other end withstands in screwed plug, valve body is connected with joint screw thread respectively with valve seat, valve seat is connected a discharge opeing cavity of inner composition with joint, joint is provided with outage, discharge opeing cavity and outage communicate, spool left end is arranged in the middle of valve seat endoporus, spool right-hand member is arranged in the middle of joint endoporus, valve seat left end groove is provided with hydrolysis resistant polyurethane O shape circle, right-hand member groove is provided with combination sealing, joint internal channel is provided with combination sealing.The utility model has been realized when having larger flow has less volume, has reduced the manufacturing cost of safety valve.
Brief description of the drawings
Accompanying drawing 1 is sectional structure schematic diagram of the present utility model
In accompanying drawing 1: 1. valve body, 2. joint, 3. spool, 4. valve seat, 5. spring base, 6. little spring, 7. big spring, 8. screwed plug, 9.O shape circle, 10. combination sealing, 11. outages, 12. exhaust chambers.
Detailed description of the invention
A kind of mine safety valve, comprise: valve body 1, joint 2, spool 3, valve seat 4, described valve body 1 adopts materials in the tube machine-shaping, inside be provided with big spring 7 and little spring 6, big spring 7 and little spring 6 one end withstand on spring base 5, the other end withstands in screwed plug 8, valve body 1 and valve seat 4 are threaded with joint 2 respectively, valve seat 4 is connected a discharge opeing cavity 12 of inner composition with joint 2, joint 2 is provided with outage 11, discharge opeing cavity 12 and outage 11 communicate, spool 3 left ends are arranged in the middle of valve seat 4 endoporus, spool 3 right-hand members are arranged in the middle of joint 2 endoporus, valve seat 4 left end grooves are provided with hydrolysis resistant polyurethane O shape circle 9, right-hand member groove is provided with combination sealing 10, joint 2 internal channel are provided with combination sealing 10.
Claims (1)
1. a mine safety valve, it comprises: valve body (1), joint (2), spool (3), valve seat (4), described valve body (1) adopts materials in the tube machine-shaping, inside be provided with big spring (7) and little spring (6), big spring (7) and little spring (6) one end withstand on spring base (5), the other end withstands in screwed plug (8), valve body (1) and valve seat (4) are threaded with joint (2) respectively, valve seat (4) is connected a discharge opeing cavity of inner composition (12) with joint (2), joint (2) is provided with outage (11), discharge opeing cavity (12) and outage (11) communicate, spool (3) left end is arranged in the middle of valve seat (4) endoporus, spool (3) right-hand member is arranged in the middle of joint (2) endoporus, valve seat (4) left end groove is provided with hydrolysis resistant polyurethane O shape circle (9), right-hand member groove is provided with combination sealing (10), joint (2) internal channel is provided with combination sealing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244103.8U CN203867595U (en) | 2014-05-14 | 2014-05-14 | Safety valve for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244103.8U CN203867595U (en) | 2014-05-14 | 2014-05-14 | Safety valve for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867595U true CN203867595U (en) | 2014-10-08 |
Family
ID=51648565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420244103.8U Expired - Lifetime CN203867595U (en) | 2014-05-14 | 2014-05-14 | Safety valve for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867595U (en) |
-
2014
- 2014-05-14 CN CN201420244103.8U patent/CN203867595U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN CEMCN CO., LTD. Free format text: FORMER NAME: SHENZHEN CEMCN LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518115, Guangdong Province, Longgang District, Henggang Shenzhen Street Ping Road No. 138, 101 Patentee after: CEMCN CO.,LTD. Address before: 518115, Guangdong Province, Longgang District, Henggang Shenzhen Street Ping Road No. 138, 101 Patentee before: Shenzhen CEMCN Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 518115 Guangdong province Shenzhen City Pingshan Kengzi streets rongshou Ludongdeta high-tech factory 1 building two layer Patentee after: CEMCN CO.,LTD. Address before: 518115, Guangdong Province, Longgang District, Henggang Shenzhen Street Ping Road No. 138, 101 Patentee before: CEMCN CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |