CN203130118U - Differential pressure combination valve - Google Patents
Differential pressure combination valve Download PDFInfo
- Publication number
- CN203130118U CN203130118U CN 201320100462 CN201320100462U CN203130118U CN 203130118 U CN203130118 U CN 203130118U CN 201320100462 CN201320100462 CN 201320100462 CN 201320100462 U CN201320100462 U CN 201320100462U CN 203130118 U CN203130118 U CN 203130118U
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- China
- Prior art keywords
- valve
- valve seat
- differential pressure
- head
- push rod
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- Expired - Fee Related
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Abstract
The utility model discloses a differential pressure combination valve which comprises a valve body, a valve core, a valve seat and an ejecting rod, wherein the valve core, the valve seat and the ejecting rod are arranged in a valve cavity of the valve body. A liquid inlet cavity is arranged on the valve seat, the ejecting rod comprises a guide block contacted with the inner wall of the valve cavity of the valve body and a straight rod portion connected onto the guide block, the head of the straight rod portion is inserted in the liquid inlet cavity of the valve seat to be interacted with the head of the valve core, outer threads are arranged on the head of the straight rod portion of the ejecting rod, a limiting block is arranged at the position in the valve seat adjacent to the liquid inlet cavity, a through hole is arranged on the limiting block, and inner threads matched with the outer threads on the ejecting rod are arranged on the inner wall of the through hole. Compared with the prior art, the valve seat is in thread connection with the ejecting rod, the ejecting rod can be screwed in the liquid inlet cavity in the valve seat to form a plug-in mounting type hydraulic assembly, and therefore the whole differential pressure combination valve is high in system integration, facilitates installation and maintenance, namely is simple to install and convenient to maintain, and can be repaired directly through replacement of the plug-in mounting type hydraulic assembly.
Description
Technical field
The utility model relates to the valve that uses on the coal mine fully-mechanized mining hydraulic support, and specifically, the utility model relates to a kind of differential pressure combination valve.
Background technology
At present, domestic differential pressure combination valve volume is big, and component are many, is difficult for installing and maintenance.The differential pressure combination valve comprises valve body and is built in spool, valve seat and push rod in the valve body, and valve seat is provided with admission chamber, and the head of push rod inserts in the admission chamber of valve seat and acts on mutually with spool.The differential pressure combination valve part of this structure is more, can cause assembling more loaded down with trivial details, but also can cause maintenance inconvenient, changes seal and will dismantle a lot of parts, the very inconvenience in the down-hole; In addition, the sealing surface of spool adopts soft material sealing such as valve pad or polyformaldehyde, because soft material weares and teares easily, having tiny cinder or other foreign matters on the coal mine work area unavoidably enters in the differential pressure combination valve, when the opening and closing of differential pressure combination valve, have impurity and be squeezed on the compressive seal, cause leakage, string liquid, cause the adaptive capacity of differential pressure combination valve and application life all not ideal enough.
The utility model content
Technical problem to be solved in the utility model provides a kind of differential pressure combination valve simple and easy to maintenance of installing.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of differential pressure combination valve, comprise valve body and be located at spool in the valve pocket of valve body, valve seat and push rod, valve seat is between spool and push rod, has admission chamber on the valve seat, push rod comprises the guide pad that contacts with the inwall of valve body valve pocket and the straight-bar portion that is connected on the guide pad, head with spool in the head insertion valve seat admission chamber of straight-bar portion acts on mutually, in straight-bar portion, also be with return spring, head in push rod straight-bar portion is provided with external screw thread, inside and admission chamber position adjacent place at valve seat are provided with limited block, be provided with through hole at this limited block, the inwall of through hole be provided with push rod on the suitable internal thread of external screw thread, return spring one end is against on the limited block, the other end is against on the guide pad of push rod.
Between the head of described spool and the described valve seat for being tightly connected firmly.
The head of described spool is the frustum structure.
The utility model adopts technique scheme, compared with prior art, valve seat and push rod are for being threaded, push rod can screw in the interior admission chamber of valve seat, form the hydraulic package of plug-in, make that the level of integrated system of whole differential pressure combination valve is higher, be easy for installation and maintenance, namely install simply, easy to maintenance, can be directly just can repair by changing the plug-in hydraulic package.
Description of drawings
Fig. 1 is the structural representation of differential pressure combination valve of the present utility model;
Mark among the above-mentioned figure is: 1, valve body; 2, swivel nut; 3, valve core spring; 4, spool; 5, valve seat; 6, return spring; 7, push rod; 8, admission chamber; 9, straight-bar portion; 10, guide pad; 11, limited block.
The specific embodiment
Be illustrated in figure 1 as a kind of differential pressure combination valve of the present utility model, it comprises valve body 1 and is located at swivel nut 2 in the valve pocket of valve body 1, spool 4, valve seat 5 and push rod 7, swivel nut 2 inserts in the valve body 1 and is threaded with valve body 1, be provided with valve core spring 3 between spool 4 and the swivel nut 2, valve seat 5 is between spool 4 and push rod 7, valve core spring 3 promotion spools 4 are pressed to valve seat 5 with spool 4 and are sealed, has admission chamber 8 on the valve seat 5, push rod 7 comprises the columniform guide pad 10 that contacts with the inwall of valve body 1 valve pocket and the straight-bar portion 9 that is connected on the guide pad 10, head with spool 4 in head insertion valve seat 5 admission chambers 8 of straight-bar portion 9 acts on mutually, also is with return spring 6 in straight-bar portion 9.In order to solve problems of the prior art, this differential pressure combination valve is provided with external screw thread at the head of push rod 7 straight-bar portions 9, all the other positions of straight-bar portion 9 are polished rod, inside and admission chamber 8 position adjacent places at valve seat 5 are provided with limited block 11, be provided with through hole at this limited block 11, the inwall of through hole be provided with push rod 7 on the suitable internal thread of external screw thread, an end of return spring 6 is against on the limited block 11, the other end is against on the guide pad 10 of push rod 7.Compared with prior art, valve seat 5 and push rod 7 are for being threaded, push rod 7 can screw in the admission chamber 8 in the valve seat 5, form the hydraulic package of plug-in, make that the level of integrated system of whole differential pressure combination valve is higher, be easy for installation and maintenance, namely install simply, easy to maintenance, can be directly just can repair by changing the plug-in hydraulic package.
For being tightly connected firmly, spool 4 adopts metal material to make, and realizes the hard sealing between valve body 1 and the valve seat 5 between the head of the spool 4 of this differential pressure combination valve and the valve seat 5, sealing with respect to softwood matter, seal not only good seal performance firmly, go back ability super-pressure, prolong the application life of differential pressure combination valve.
As shown in Figure 1, the head of spool 4 and be the frustum structure, the head of spool 4 no longer stretches in the admission chamber 8, and 4 ports at the admission chamber 8 of valve seat 5 of push rod 7 and spool begin to contact, and the structure of spool 4 is simpler, the more compact structure of differential pressure combination valve integral body.
The length of the valve body 1 of this differential pressure combination valve is 130mm, and width is 40mm, highly is 100mm.
By reference to the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (3)
1. differential pressure combination valve, comprise valve body and be located at spool in the valve pocket of valve body, valve seat and push rod, valve seat is between spool and push rod, has admission chamber on the valve seat, push rod comprises the guide pad that contacts with the inwall of valve body valve pocket and the straight-bar portion that is connected on the guide pad, head with spool in the head insertion valve seat admission chamber of straight-bar portion acts on mutually, in straight-bar portion, also be with return spring, it is characterized in that: the head in described straight-bar portion is provided with external screw thread, inside and admission chamber position adjacent place at described valve seat are provided with limited block, be provided with through hole at this limited block, the inwall of through hole be provided with push rod on the suitable internal thread of external screw thread, described return spring one end is against on the limited block, and the other end is against on the guide pad of push rod.
2. differential pressure combination valve according to claim 1 is characterized in that: between the head of described spool and the described valve seat for being tightly connected firmly.
3. differential pressure combination valve according to claim 2, it is characterized in that: the head of described spool is the frustum structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320100462 CN203130118U (en) | 2013-03-05 | 2013-03-05 | Differential pressure combination valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320100462 CN203130118U (en) | 2013-03-05 | 2013-03-05 | Differential pressure combination valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130118U true CN203130118U (en) | 2013-08-14 |
Family
ID=48938109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320100462 Expired - Fee Related CN203130118U (en) | 2013-03-05 | 2013-03-05 | Differential pressure combination valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130118U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762541A (en) * | 2017-10-26 | 2018-03-06 | 鸿大智能机械有限公司 | The automatic unloading device of hydraulic control one-way valve |
| CN107842382A (en) * | 2017-10-27 | 2018-03-27 | 鸿大智能机械有限公司 | Hydraulic control one-way valve |
| CN107842381A (en) * | 2017-10-26 | 2018-03-27 | 鸿大智能机械有限公司 | Automatic unloading hydraulic control one-way valve |
| CN107842380A (en) * | 2017-10-26 | 2018-03-27 | 鸿大智能机械有限公司 | The core assembly of automatic unloading hydraulic control one-way valve |
| CN107859524A (en) * | 2017-10-27 | 2018-03-30 | 鸿大智能机械有限公司 | The core assembly of hydraulic control one-way valve |
-
2013
- 2013-03-05 CN CN 201320100462 patent/CN203130118U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762541A (en) * | 2017-10-26 | 2018-03-06 | 鸿大智能机械有限公司 | The automatic unloading device of hydraulic control one-way valve |
| CN107842381A (en) * | 2017-10-26 | 2018-03-27 | 鸿大智能机械有限公司 | Automatic unloading hydraulic control one-way valve |
| CN107842380A (en) * | 2017-10-26 | 2018-03-27 | 鸿大智能机械有限公司 | The core assembly of automatic unloading hydraulic control one-way valve |
| CN107842382A (en) * | 2017-10-27 | 2018-03-27 | 鸿大智能机械有限公司 | Hydraulic control one-way valve |
| CN107859524A (en) * | 2017-10-27 | 2018-03-30 | 鸿大智能机械有限公司 | The core assembly of hydraulic control one-way valve |
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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: 20130814 Termination date: 20150305 |
|
| EXPY | Termination of patent right or utility model |