CN201173127Y - Large flow safety valve for hydraulic support hydraulic-oil cylinder - Google Patents
Large flow safety valve for hydraulic support hydraulic-oil cylinder Download PDFInfo
- Publication number
- CN201173127Y CN201173127Y CNU2008200698916U CN200820069891U CN201173127Y CN 201173127 Y CN201173127 Y CN 201173127Y CN U2008200698916 U CNU2008200698916 U CN U2008200698916U CN 200820069891 U CN200820069891 U CN 200820069891U CN 201173127 Y CN201173127 Y CN 201173127Y
- Authority
- CN
- China
- Prior art keywords
- valve
- safety valve
- spool
- blind hole
- flow safety
- 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 - Fee Related
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Abstract
The utility model discloses a large flow safety valve used on the hydraulic oil cylinder of the hydraulic supporting frame. The large flow safety valve comprises a connector on which a flow channel is arranged, and a pressure spring which is arranged on a spring seat in the spring cavity of a valve casing; the connector and the valve casing are positioned through an inner embedded sleeve axially and radially and are connected through a thread; a plurality of grooves and sealing rings which are arranged in the grooves are arranged on the inner circumference of the inner embedded sleeve at intervals; one end of the valve core provided with a blind hole is extended with the inner embedded sleeve and is matched with the connector in clearance fit, and the other end extends to the spring cavity of the valve casing and contacts with the spring seat; a positioning dummy club, a sealing groove and a sealing ring arranged in the sealing groove are arranged on the outer circumference of the valve core in the valve casing along the axial direction at intervals; two rows of load discharging holes are arranged on the blind hole inner wall of the valve core along the axial direction at intervals; the flow channel of the connector is communicated with the blind hole of the valve core. The large flow safety valve has the advantages that the occurrence of jamming phenomenon of the valve core is avoided, simultaneously, the processing property is good, the coaxality of holes matched with the valve core is good, and the working reliability is high.
Description
Technical field
The utility model relates to hydraulic support, especially relates to the high-flow safety valve that is used on the hydraulic support hydraulic jack.
Background technology
Along with the raising of ore deposit pressure and mining height standard, to using the high-flow safety valve performance requirement on the hydraulic support hydraulic cylinder more and more higher.When the pressure from the hydraulic support top causes passively when stressed, safety valve off-load in time directly influences intensity, the safety factor of support and directly protects the performance of ability.Use the double hole unloading type safety valve on hydraulic support at present, because reasons in structure, the sealed groove that is arranged on the double unloading hole of sealed valve stem place is distributed on two parts, therefore make that the endoporus alignment that matches with valve rod is relatively poor and cause the valve rod card of spraining, reduced the reliability height of safety valve, given in the use of hydraulic pressure support and bury potential safety hazard.
The utility model content
The utility model purpose be to provide a kind of reliability high be used for high-flow safety valve on the hydraulic support hydraulic jack.
For achieving the above object, the utility model can be taked following technical proposals:
The high-flow safety valve that is used on the hydraulic support hydraulic jack described in the utility model, it comprises the joint that offers runner, is arranged on the compression spring on the valve casing spring chamber inner spring seat; Described joint is connected with radial location and by screw thread by being nested with axially with described valve casing; Be nested with spaced apart many grooves and the sealing ring that sets within it of being provided with on the inner peripheral surface described; Spool one end that offers blind hole extends and is nested with and cooperates with the play movement, and the other end extends in the valve casing spring chamber and with spring base and contacts; The sealing ring that is provided with positioning boss, seal groove and sets within it at the spool outer peripheral face upper edge axially spaced-apart that is positioned at valve casing; Offer two row's unloading holes at the blind hole inwall upper edge of described spool axially spaced-apart; The runner of described joint is held in the mouth logical with the blind hole of spool mutually.
The blind hole that is opened on the described spool is a shoulder hole; Described positioning boss is positioned at the solid position of spool.
The port of described spring chamber seals by the pressure regulation screw plug; The outer peripheral face that joint combines with valve casing is provided with the dust protection rubber cover.
It is stifled that the end outer surface of described valve casing is provided with the dustproof plastics of U-shaped.
Being arranged on the described sealing ring that is nested with in the inner peripheral surface groove is made by polyamine fat material.
The utility model advantage just is to be nested with the axial and radial location that realizes joint and valve casing by described, and by being threaded joint and valve casing is tightened together; Described many sealed grooves are opened in are nested with on the parts, therefore improved the alignment of groove greatly, stopped the sprain generation of card phenomenon of spool.Blind hole on the spool is set to shoulder hole, has improved the off-load flow greatly.This valve processing performance is good simultaneously, and to form between the hole cooperate alignment good with spool, the functional reliability height.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in the figure, the high-flow safety valve that is used on the hydraulic support hydraulic jack described in the utility model, comprise the joint 1 that offers runner, be arranged on the compression spring 9 on the valve casing 7 spring chamber inner spring seats 8, the port of described spring chamber is by 11 sealings of pressure regulation screw plug; Described joint 1 axially is connected with radial location and by screw thread by being nested with 4 with described valve casing 7; Be nested with spaced apart many grooves and the sealing ring 5 that sets within it and make of being provided with on 4 inner peripheral surfaces described by polyamine fat material; Spool 2 one ends that offer blind hole extend be nested with 4 and with joint 1 matched in clearance, the other end extends in the spring chamber and contacts with spring base 8; The sealing ring 6 that is provided with positioning boss 12, seal groove and sets within it at the spool 2 outer peripheral face upper edge axially spaced-aparts that are positioned at valve casing 7; Offer two row's unloading holes 13 at the blind hole inwall upper edge of described spool 2 axially spaced-apart; The runner of described joint 1 is held in the mouth logical with the blind hole of spool 2 mutually.For further improving the off-load flow, the blind hole that is opened on the spool 2 is set to shoulder hole.Positioning boss 12 is positioned at the solid position of spool 2, makes that prolonged the application life of spool 2.The outer peripheral face that joint 1 combines with valve casing 7 is provided with dust protection rubber cover 3, and the external surface of valve casing 7 ends is provided with the dustproof plastics stifled 10 of U-shaped.
Claims (5)
1, a kind of high-flow safety valve that is used on the hydraulic support hydraulic jack, it comprises the joint (1) that offers runner, is arranged on the compression spring (9) on valve casing (7) the spring chamber inner spring seat (8); It is characterized in that: described joint (1) axially is connected with radial location and by screw thread by being nested with (4) with described valve casing (7); The spaced apart sealing ring (5) that is provided with many grooves and sets within it on described being nested with (4) inner peripheral surface; Spool (2) one ends that offer blind hole extend be nested with (4) and with joint (1) matched in clearance, the other end extends in the spring chamber and contacts with spring base (8); The sealing ring (6) that is provided with positioning boss (12), seal groove and sets within it at the spool that is positioned at valve casing (7) (2) outer peripheral face upper edge axially spaced-apart; Offer two row's unloading holes (13) at the blind hole inwall upper edge of described spool (2) axially spaced-apart; The runner of described joint (1) is held in the mouth logical with the blind hole of spool (2) mutually.
2, the high-flow safety valve that is used on the hydraulic support hydraulic jack according to claim 1 is characterized in that: the blind hole that is opened on the described spool (2) is a shoulder hole; Described positioning boss (12) is positioned at the solid position of spool (2).
3, the high-flow safety valve that is used on the hydraulic support hydraulic jack according to claim 1 and 2 is characterized in that: the port of described spring chamber seals by pressure regulation screw plug (11); The outer peripheral face that joint (1) combines with valve casing (7) is provided with dust protection rubber cover (3).
4, the high-flow safety valve that is used on the hydraulic support hydraulic jack according to claim 1 and 2 is characterized in that: the end outer surface of described valve casing (7) is provided with the dustproof plastics of U-shaped stifled (10).
5, the high-flow safety valve that is used on the hydraulic support hydraulic jack according to claim 1 and 2 is characterized in that: the sealing ring (5) that is arranged in described being nested with (4) the inner peripheral surface groove is made by polyamine fat material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200698916U CN201173127Y (en) | 2008-04-03 | 2008-04-03 | Large flow safety valve for hydraulic support hydraulic-oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200698916U CN201173127Y (en) | 2008-04-03 | 2008-04-03 | Large flow safety valve for hydraulic support hydraulic-oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201173127Y true CN201173127Y (en) | 2008-12-31 |
Family
ID=40200243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200698916U Expired - Fee Related CN201173127Y (en) | 2008-04-03 | 2008-04-03 | Large flow safety valve for hydraulic support hydraulic-oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201173127Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758643A (en) * | 2012-06-21 | 2012-10-31 | 乐清市东风煤矿设备有限公司 | Safety valve |
| CN103835734A (en) * | 2014-04-02 | 2014-06-04 | 安徽理工大学 | Individual hydraulic prop large-flow water pressure three-purpose valve |
| CN104153794A (en) * | 2014-08-06 | 2014-11-19 | 巨隆集团芜湖兴隆液压有限公司 | Valve element assembly of high-flow safety valve |
| CN105569696A (en) * | 2016-03-04 | 2016-05-11 | 辽宁工程技术大学 | Extra-large flow high-pressure erosion-control pressure control valve for hydraulic support |
-
2008
- 2008-04-03 CN CNU2008200698916U patent/CN201173127Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758643A (en) * | 2012-06-21 | 2012-10-31 | 乐清市东风煤矿设备有限公司 | Safety valve |
| CN103835734A (en) * | 2014-04-02 | 2014-06-04 | 安徽理工大学 | Individual hydraulic prop large-flow water pressure three-purpose valve |
| CN103835734B (en) * | 2014-04-02 | 2016-05-11 | 安徽理工大学 | The large flow hydraulic pressure of hydraulic prop triple-use valve |
| CN104153794A (en) * | 2014-08-06 | 2014-11-19 | 巨隆集团芜湖兴隆液压有限公司 | Valve element assembly of high-flow safety valve |
| CN104153794B (en) * | 2014-08-06 | 2016-02-17 | 巨隆集团芜湖兴隆液压有限公司 | A kind of core assembly of high-flow safety valve |
| CN105569696A (en) * | 2016-03-04 | 2016-05-11 | 辽宁工程技术大学 | Extra-large flow high-pressure erosion-control pressure control valve for hydraulic support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHENG ZHOU COALA MACHINE HYDRAULIC PRESSURE ELECTR Free format text: FORMER OWNER: ZHENGZHOU HENGDA HYDRAULIC ENGINEER CENTER Effective date: 20090515 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090515 Address after: No. 105, Huashan Road, Henan, Zhengzhou Province, China: 450000 Patentee after: Hydraulic & Electric Control Equipment Co., Ltd., Zhengzhou Coal Mining Machinery Group Co., Ltd. Address before: No. 105, Huashan Road, Henan, Zhengzhou Province, China: 450000 Patentee before: Zhengzhou Hengda Hydraulic Engineering Center |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20140403 |