CN203130134U - Differential pressure combination valve for displacement - Google Patents
Differential pressure combination valve for displacement Download PDFInfo
- Publication number
- CN203130134U CN203130134U CN 201320100108 CN201320100108U CN203130134U CN 203130134 U CN203130134 U CN 203130134U CN 201320100108 CN201320100108 CN 201320100108 CN 201320100108 U CN201320100108 U CN 201320100108U CN 203130134 U CN203130134 U CN 203130134U
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- Prior art keywords
- valve
- valve seat
- differential pressure
- pressure combination
- head
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Abstract
The utility model discloses a differential pressure combination valve for displacement. The differential pressure combination valve for the displacement is formed by combining an alternate one-way valve and a hydraulic control one-way valve and mainly comprises a valve body, a valve core, a valve seat and an ejection rod, wherein the valve core, the valve seat and the ejection rod are arranged inside a valve cavity of the valve body, the valve seat is provided with a liquid inlet cavity, the ejection rod comprises a guide block which is in contact with the inner wall of the valve cavity of the valve body and a straight rod portion which is connected onto the guide block, the head of the straight rod portion of the ejection rod is inserted into the liquid inlet cavity inside the valve seat to interact with the head of the valve core, a return spring is sleeved outside the straight rod portion of the ejection rod, the head of the straight rod portion of the ejection rod is provided with external threads, the portion of the inside of the valve seat, which is adjacent to the liquid inlet cavity, is provided with a limit block on which a through- hole is formed, the inner wall of the through-hole is provided with internal threads which are matched with the external threads on the ejection rod, and the ejection rod can be screwed inside the liquid inlet cavity inside the valve seat, so that an inserted type hydraulic assembly is formed. Therefore, the system integration degree of the whole differential pressure combination valve for the displacement is relatively high, installation and maintenance are facilitated, namely, the installation is simple and the maintenance is convenient, and the differential pressure combination valve for the displacement can be repaired only by directly changing the inserted 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 passing differential pressure combination valve.
Background technology
At present, domestic passing is big with differential pressure combination valve volume, and component are many, is difficult for installing and maintenance.Pass the control of stretching out and regaining that is mainly used in jack cylinder in the hydraulic system with the differential pressure combination valve, and single chamber liquid is sealed, realize the differential action of jack cylinder simultaneously.Passing with the differential pressure combination valve is to be combined by alternately one way valve and hydraulic control one-way valve, and it mainly comprises valve body and be built in spool, valve seat and push rod in the valve body that valve seat is provided with admission chamber, acts on mutually with spool in the admission chamber of the head insertion valve seat of push rod.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 passing differential pressure combination valve, by alternately one way valve and hydraulic control one-way valve combine, it mainly comprises valve body and is 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 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, and 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 whole passing higher with the level of integrated system of differential pressure combination valve, 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 that the differential pressure combination valve is used in passing 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; 12, replace valve seat; 13, valve pocket; 14, joint; 15, steel ball.
The specific embodiment
Be illustrated in figure 1 as a kind of passing differential pressure combination valve of the present utility model, combine by replacing one way valve and hydraulic control one-way valve, alternately one way valve mainly comprises the steel ball 15 that replaces in valve seat 12, valve pocket 13, joint 14 and the joint 14.Pass with the differential pressure combination valve and also comprise valve body 1 and be 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 passing is provided with external screw thread with the differential pressure combination valve 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 whole passing higher with the level of integrated system of differential pressure combination valve, 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.
This passing with between the head of the spool 4 of differential pressure combination valve and the valve seat 5 for being tightly connected firmly, spool 4 adopts metal material to make, realize the hard sealing between valve body 1 and the valve seat 5, sealing with respect to softwood matter, seal not only good seal performance firmly, also ability super-pressure prolongs the application life of passing with the 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, the structure of spool 4 is simpler, passes the more compact structure with differential pressure combination valve integral body.
This passing is 122mm with the length of the valve body 1 of differential pressure combination valve, and width is 45mm, highly is 140mm.
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. passing differential pressure combination valve, by alternately one way valve and hydraulic control one-way valve combine, it mainly comprises valve body and is 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, the other end is against on the guide pad of push rod.
2. passing according to claim 1 differential pressure combination valve is characterized in that: between the head of described spool and the described valve seat for being tightly connected firmly.
3. passing according to claim 2 differential pressure combination valve, 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 201320100108 CN203130134U (en) | 2013-03-05 | 2013-03-05 | Differential pressure combination valve for displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320100108 CN203130134U (en) | 2013-03-05 | 2013-03-05 | Differential pressure combination valve for displacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130134U true CN203130134U (en) | 2013-08-14 |
Family
ID=48938125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320100108 Expired - Lifetime CN203130134U (en) | 2013-03-05 | 2013-03-05 | Differential pressure combination valve for displacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130134U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615275A (en) * | 2013-12-02 | 2014-03-05 | 中煤北京煤矿机械有限责任公司 | Top coal caving hydraulic support and special linkage control combination valve for same |
-
2013
- 2013-03-05 CN CN 201320100108 patent/CN203130134U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615275A (en) * | 2013-12-02 | 2014-03-05 | 中煤北京煤矿机械有限责任公司 | Top coal caving hydraulic support and special linkage control combination valve for same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171121 Address after: Zhi Zhen Wuhu County in Anhui province Wuhu city Anhui Bay 241000 Wuhu Economic Development Zone Sunshine Road No. 768 building 06 Patentee after: HONGDA INTELLIGENT MACHINERY Co.,Ltd. Address before: 241000 Wuhu County, Anhui Province Machinery Industrial Park, Wuhu Patentee before: JULONG GROUP WUHU XINGLONG HYDRAULIC Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |