CN201037425Y - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN201037425Y CN201037425Y CNU2006201400089U CN200620140008U CN201037425Y CN 201037425 Y CN201037425 Y CN 201037425Y CN U2006201400089 U CNU2006201400089 U CN U2006201400089U CN 200620140008 U CN200620140008 U CN 200620140008U CN 201037425 Y CN201037425 Y CN 201037425Y
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- China
- Prior art keywords
- valve
- valve body
- spring
- seal groove
- utility
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- Expired - Lifetime
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- Safety Valves (AREA)
Abstract
The utility model provides a safety valve with 500 L/min of rated flow, which comprises a valve body and a valve housing. The valve body and the valve housing are in interference fit, a third gear seal groove is arranged on the valve body, a composite seal device formed by PTEE and rubber is pocketed in the seal groove, a filter is arranged at the front end of the valve body, two rows of liquid exhaust holes are arranged on a valve core; a valve core, a spring seat, a small spring and a big spring are filled in the valve core from the lower end of the valve housing in sequence and are finally screwed with an adjusting screw. The utility model has dependable performance, large flow and rapid dynamic response, which is capable of ensuring the mainstay of the hydraulic support on the coal mine synthetic excavating workface, has constant resistance characteristics and flexibility.
Description
One, technical field
The utility model relates to a kind of safety valve, and referring in particular to a kind of metered flow that is used for the coal mine fully-mechanized mining working hydraulic support is the safety valve of 500L/min.
Two, background technology
The structure of safety valve is varied in the prior art.(ZL2005 2 0003856.0 as " a kind of be used for the safety valve that nominal pressure is 40MPa " that Chinese patent is announced, the day for announcing: 2006.6.28), it comprises valve casing and valve body, have spout hole on the valve casing and seal by gum cover, put into valve seat, spool successively, tighten valve body from the valve casing right-hand member, valve body port is provided with strainer and is fixed by circlip, and the overflow aperture is arranged on the spool, from valve casing left end loading spring seat, spring successively, be screwed into voltage regulation screw.
Safety valve is the critical component of protection hydraulic support safety, and performance must be reliable.Along with the development of comprehensive mechanical coal mining cause, the hydraulic support of the big thick cylinder diameter of mining height is also increasing gradually, and for this reason, the safety valve of big flow is requisite safeguard protection Hydraulic Elements in hydraulic support and the Safety of Coal Mine Production.Existing safety valve is because flow is little, and dynamic response is slow, can not satisfy the needs of the thick cylinder diameter hydraulic support of big mining height, when top board comes surge, often makes damage of components such as column, back timber, influences the down-hole and normally mines.
Three, utility model content
The purpose of this utility model is to provide a kind of safety valve that metered flow is 500L/min that is used for, its dependable performance, and flow is big, and dynamic response is fast, can guarantee that the pillar of coal mine fully-mechanized mining working hydraulic support has constant-resistance operating characteristic and contractibility.
For achieving the above object, the solution that the utility model is taked is: a kind of safety valve, it comprises valve body and valve casing, valve body and valve casing interference fit, and valve body is provided with the third gear seal groove, the composite seal device of packing in the seal groove and forming by polytetrafluoroethylene (PTFE) and rubber, be provided with strainer at the valve body front end, spool is provided with two row's outages, the spool of packing into successively from the valve casing lower end, spring base, little spring, big spring are screwed into voltage regulation screw at last.
The utility model valve body is provided with the third gear seal groove, and adopt polytetrafluoroethylene (PTFE) and rubber to form composite seal device, valve body and valve casing interference fit, spool is provided with two row's outages, adopt two springs of big little spring to support, and regulate the pressure size with voltage regulation screw, the valve body front portion is provided with filtration device structure.It is connected with the hydraulic support column cavity of resorption, when the roof weighting of column supporting, make under the post alive and contract, when column cavity of resorption fluid pressure surpasses spring pressure, spool moves down under pressure promotes, two row's outages (unloading hole) move past composite seal device on the spool, and high-pressure work liquid is emitted, and the working fluid pressure of column cavity of resorption is reduced, when hydraulic coupling under the column during less than spring pressure, valve core reset recovers original sealing state.Its dependable performance, flow is big, and dynamic response is fast, can guarantee that the pillar of coal mine fully-mechanized mining working hydraulic support has constant-resistance operating characteristic and contractibility.
Four, description of drawings
Fig. 1 is an of the present utility model sectional view.
Among the figure: 1, strainer, 2, valve body, 3, spool, 4, composite seal device, 5, spring base, 6, valve casing, 7, little spring, 8, big spring, 9, voltage regulation screw, 10, outage.
Five, 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 safety valve, it comprises valve body 2 and valve casing 6, valve body 2 and valve casing 6 interference fit, and valve body 2 is provided with the third gear seal groove, the composite seal device 4 of packing in the seal groove and forming by polytetrafluoroethylene (PTFE) and rubber, be provided with strainer at valve body 2 front ends, spool 3 is provided with two row's outages 10, the spool 3 of packing into successively from valve casing 6 lower ends, spring base 5, little spring 7, big spring 8 are screwed into voltage regulation screw 9 at last.
Present embodiment is the FLFAD500/42 safety valve, and metered flow: 500L/min, working media are 5% oil emulsion, 95% neutral water mix emulsion fluid.
Claims (1)
1. safety valve, it comprises valve body (2) and valve casing (6), it is characterized in that: valve body (2) and valve casing (6) interference fit, valve body (2) is provided with the third gear seal groove, and the composite seal device (4) of packing in the seal groove and being made up of polytetrafluoroethylene (PTFE) and rubber is provided with strainer at valve body (2) front end, spool (3) is provided with two row's outages (10), the spool (3) of packing into successively from valve casing (6) lower end, spring base (5), little spring (7), big spring (8) are screwed into voltage regulation screw (9) at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201400089U CN201037425Y (en) | 2006-11-13 | 2006-11-13 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201400089U CN201037425Y (en) | 2006-11-13 | 2006-11-13 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201037425Y true CN201037425Y (en) | 2008-03-19 |
Family
ID=39209942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201400089U Expired - Lifetime CN201037425Y (en) | 2006-11-13 | 2006-11-13 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201037425Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101584900B (en) * | 2008-05-23 | 2012-01-04 | 北京航天长峰股份有限公司 | Pressure relief valve with nonlinear pressure release |
| CN103410537A (en) * | 2013-08-20 | 2013-11-27 | 深圳市神拓机电设备有限公司 | Safety valve |
| CN104896156A (en) * | 2015-04-24 | 2015-09-09 | 焦作市长海机械科技有限公司 | U-type pin quickly-jointed pressure reducing valve |
| CN105298522A (en) * | 2015-11-20 | 2016-02-03 | 巨隆集团芜湖兴隆液压有限公司 | Safety valve |
| CN105298995A (en) * | 2015-11-20 | 2016-02-03 | 巨隆集团芜湖兴隆液压有限公司 | Filter suitable for safety valve |
| CN106523566A (en) * | 2016-10-20 | 2017-03-22 | 许继电气股份有限公司 | Main-auxiliary spring assembly and spring seat thereof |
| CN109707883A (en) * | 2019-01-22 | 2019-05-03 | 安徽理工大学 | A kind of anti-clogging safety valve |
| CN110242632A (en) * | 2019-05-27 | 2019-09-17 | 龙工（上海）精工液压有限公司 | Main-control valve of excavating machine secondary relief with filter device |
-
2006
- 2006-11-13 CN CNU2006201400089U patent/CN201037425Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101584900B (en) * | 2008-05-23 | 2012-01-04 | 北京航天长峰股份有限公司 | Pressure relief valve with nonlinear pressure release |
| CN103410537A (en) * | 2013-08-20 | 2013-11-27 | 深圳市神拓机电设备有限公司 | Safety valve |
| CN104896156A (en) * | 2015-04-24 | 2015-09-09 | 焦作市长海机械科技有限公司 | U-type pin quickly-jointed pressure reducing valve |
| CN105298522A (en) * | 2015-11-20 | 2016-02-03 | 巨隆集团芜湖兴隆液压有限公司 | Safety valve |
| CN105298995A (en) * | 2015-11-20 | 2016-02-03 | 巨隆集团芜湖兴隆液压有限公司 | Filter suitable for safety valve |
| CN106523566A (en) * | 2016-10-20 | 2017-03-22 | 许继电气股份有限公司 | Main-auxiliary spring assembly and spring seat thereof |
| CN106523566B (en) * | 2016-10-20 | 2018-08-03 | 许继电气股份有限公司 | Primary and secondary spring assembly and its spring base |
| CN109707883A (en) * | 2019-01-22 | 2019-05-03 | 安徽理工大学 | A kind of anti-clogging safety valve |
| CN110671523A (en) * | 2019-01-22 | 2020-01-10 | 安徽理工大学 | Anti-blocking safety valve |
| CN110242632A (en) * | 2019-05-27 | 2019-09-17 | 龙工（上海）精工液压有限公司 | Main-control valve of excavating machine secondary relief with filter device |
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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: FENGLONG HYDRAULIC CO., LTD. Free format text: FORMER NAME: FENGLONG FORGING ELEMENTS CO., LTD., ZHEJIANG |
|
| CP03 | Change of name, title or address |
Address after: Nineteen Yueqing Economic Development Zone, Zhejiang, Wei Road, 325600 Patentee after: Fenglong Hydraulic Co., Ltd. Address before: 325605 Industrial Zone, seven Li Town, Zhejiang, Yueqing Patentee before: Fenglong Forging Elements Co., Ltd., Zhejiang |
|
| C56 | Change in the name or address of the patentee |
Owner name: FENGLONG HIGH-TECH HYDRAULIC CO., LTD. Free format text: FORMER NAME: FENGLONG HYDRAULIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Nineteen Yueqing Economic Development Zone, Zhejiang, Wei Road, 325600 Patentee after: Hydraulic Limited by Share Ltd Address before: Nineteen Yueqing Economic Development Zone, Zhejiang, Wei Road, 325600 Patentee before: Fenglong Hydraulic Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080319 |
|
| EXPY | Termination of patent right or utility model |