CN202832580U - Middle-flow hydraulic control one-way valve - Google Patents
Middle-flow hydraulic control one-way valve Download PDFInfo
- Publication number
- CN202832580U CN202832580U CN 201220465038 CN201220465038U CN202832580U CN 202832580 U CN202832580 U CN 202832580U CN 201220465038 CN201220465038 CN 201220465038 CN 201220465038 U CN201220465038 U CN 201220465038U CN 202832580 U CN202832580 U CN 202832580U
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- Prior art keywords
- push rod
- valve
- valve seat
- spool
- sap cavity
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- Expired - Fee Related
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Abstract
The utility model discloses a middle-flow hydraulic control one-way valve which comprises a valve body, a valve sleeve, a valve core, a valve seat, a push rod and a joint. A liquid passing cavity is arranged in the valve seat, the head portion of the push rod extends into the liquid passing cavity of the valve seat, a return spring is further sleeved on the push rod, and external threads are arranged on the rod body of the head portion of the push rod. A limiting block is arranged in the position, close to the liquid passing cavity, inside the valve seat, a through hole is formed in the limiting block, internal threads matched with the external threads on the push rod are arranged on the inner wall of the through hole, one end of the return spring is abutted against the limiting block and the other end of the return spring is abutted against the push rod. Compared with the prior art, the valve seat and the push rod are connected through the threads, the push rod can be screwed into the liquid passing cavity in the valve seat, and then a plug-in mounting hydraulic component is formed. Thus, the system integration degree of the whole hydraulic control one-way valve is enabled to be high, and the hydraulic control one-way valve is convenient to install and maintain, and in other words, the installation is simple and the maintenance is convenient, and the hydraulic control one-way valve can be repaired directly through changing of the plug-in mounting hydraulic component.
Description
Technical field
The utility model relates to the Hydraulic Elements in the coal mine hydraulic supporting hydraulic circuit, and specifically, the utility model relates to a kind of middle flow pilot operated check valve.
Background technology
Since coal mine fully-mechanized mining begins, because the difference of various coal mining environment has had stricter requirement to hydraulic support and supporting equipment.The hydraulic control one-way valve flow is little at present, hydraulic shock is large during off-load, each component and bulk life time to valve all can reduce, sealing surface adopts the material sealings such as valve pad or polyformaldehyde, have unavoidably tiny cinder on the coal mine work area or other foreign matters enter in the hydraulic valve, when the pilot operated valve device opening and closing, having impurity is squeezed on the compressive seal, cause leakage, string liquid, adaptive capacity and application life are all not ideal enough, traditional hydraulic control one-way valve is combined by a lot of structural members in addition, change seal and will dismantle a lot of parts, the very inconvenience in the down-hole, a lot of problems are perplexing the normal operation production of underground hydraulic support frame.
The utility model content
Technical problem to be solved in the utility model provides a kind of middle flow pilot operated check 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 middle flow pilot operated check valve, comprise valve body, valve pocket, spool, valve seat, push rod and joint, valve seat was provided with sap cavity, valve seat is enclosed within the outside of push rod, the head of push rod also stretches in the excessively sap cavity of valve seat, spool is built in the valve pocket, between spool and valve pocket, also be provided with spring, spring promotes spool makes the port with cross sap cavity connection of head on valve seat of spool be connected with valve base sealing, also cover has a return spring on push rod, is provided with external screw thread at the head shaft of push rod, is provided with limited block in the inside of described valve seat near the position of crossing sap cavity, 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 push rod; Be provided with six working holes for hydraulic oil turnover at valve body, wherein two working holes are communicated with described joint, and two working holes are communicated with the sap cavity of crossing of valve seats, and the feed pathway that arranges on two working holes and the valve pocket is communicated with.
Between described spool and the described valve seat for firmly being tightly connected.
The head of described spool is the frustum structure, and described push rod begins to contact in the port of described valve seat with spool.
The utility model adopts technique scheme, compared with prior art, valve seat and push rod are for being threaded, push rod can screw in crossing in the sap cavity in the valve seat, form the hydraulic package of plug-in, so that the level of integrated system of whole hydraulic control one-way valve is higher, be convenient to installation and the maintenance of hydraulic control one-way valve, namely install simply, easy to maintenance, directly just can repair this hydraulic control one-way valve by changing plug-in hydraulic pressure assembly.
Description of drawings
Fig. 1 is the structural representation of hydraulic control one-way valve of the present utility model;
Mark among the above-mentioned figure is: 1, valve pocket; 2, spool; 3, valve body; 4, valve seat; 5, return spring; 6, push rod; 7, cross sap cavity; 8, port; 9, limited block; 10, feed pathway; 11, joint; 12, spring.
The specific embodiment
Be illustrated in figure 1 as a kind of middle flow pilot operated check valve of the present utility model, it comprises valve body 3, valve pocket 1, spool 2, valve seat 4, push rod 6 and joint 11, valve seat 4 was provided with sap cavity 7, valve seat 4 is enclosed within the outside of push rod 6, the head of push rod 6 also stretches in the excessively sap cavity 7 of valve seat 4, spool 2 is built in the valve pocket 1, between spool 2 and valve pocket 1, also be provided with spring 12, spring 12 promotes spools 2 is tightly connected port 8 places and the valve seat 4 that with mistake sap cavity 7 are communicated with of head on valve seat 4 of spool 2, also cover has return spring 5 on push rod 6, head shaft at push rod 6 is provided with external screw thread, inside at described valve seat 4 is provided with limited block 9 near the position of crossing sap cavity 7, be provided with through hole at this limited block 9, the inwall of through hole be provided with push rod 6 on the suitable internal thread of external screw thread, return spring 5 one ends are against on the limited block 9, and the other end is against on the push rod 6; Be provided with six working holes that pass in and out for hydraulic oil at valve body 3, such as the working hole A among the figure, working hole PA and working hole PB, wherein two working hole PB are communicated with joint 11, two working hole PA are communicated with the excessively sap cavity 7 of valve seats 4, the feed pathway 10 that arranges on two working hole A and the valve pocket 1 is communicated with, and has working hole A' on the valve pocket 1.Compared with prior art, valve seat 4 and push rod 6 are for being threaded, push rod 6 can screw in crossing in the sap cavity 7 in the valve seat 4, form the hydraulic package of plug-in, so that the level of integrated system of whole hydraulic control one-way valve is higher, be convenient to installation and the maintenance of hydraulic control one-way valve, namely install simply, easy to maintenance, directly just can repair this hydraulic control one-way valve by changing plug-in hydraulic pressure assembly.
In addition, for firmly being tightly connected, spool 2 adopts metal material to make, and with respect to the sealing of softwood matter, firmly seals not only good seal performance, goes back ability super-pressure, the one way valve long service life between the spool 2 of this hydraulic control one-way valve and the valve seat 4.As shown in Figure 1, the head of spool 2 and be the frustum structure, the head of spool 2 no longer stretched in the sap cavity 7, and 2 port 8 places at valve seat 4 of push rod 6 and spool begin to contact, and the structure of spool 2 is simpler, the more compact structure of hydraulic control one-way valve integral body.
The above has carried out exemplary description to the utility model by reference to the accompanying drawings; 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. flow pilot operated check valve in a kind, comprise valve body, valve pocket, spool, valve seat, push rod and joint, valve seat was provided with sap cavity, valve seat is enclosed within the outside of push rod, the head of push rod also stretches in the excessively sap cavity of valve seat, spool is built in the valve pocket, between spool and valve pocket, also be provided with spring, spring promotes spool makes the port with cross sap cavity connection of head on valve seat of spool be connected with valve base sealing, also cover has return spring on push rod, it is characterized in that: the head shaft at described push rod is provided with external screw thread, be provided with limited block in the inside of described valve seat near the position of crossing sap cavity, 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 push rod; Be provided with six working holes for hydraulic oil turnover at described valve body, wherein two working holes are communicated with described joint, and two working holes are communicated with the sap cavity of crossing of valve seats, and the feed pathway that arranges on two working holes and the described valve pocket is communicated with.
2. middle flow pilot operated check valve according to claim 1 is characterized in that: between described spool and the described valve seat for firmly being tightly connected.
3. middle flow pilot operated check valve according to claim 1 and 2, it is characterized in that: the head of described spool is the frustum structure, described push rod begins to contact in the port of described valve seat with spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220465038 CN202832580U (en) | 2012-09-13 | 2012-09-13 | Middle-flow hydraulic control one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220465038 CN202832580U (en) | 2012-09-13 | 2012-09-13 | Middle-flow hydraulic control one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832580U true CN202832580U (en) | 2013-03-27 |
Family
ID=47944312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220465038 Expired - Fee Related CN202832580U (en) | 2012-09-13 | 2012-09-13 | Middle-flow hydraulic control one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832580U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676118A (en) * | 2017-09-23 | 2018-02-09 | 鸿大智能机械有限公司 | The valve pocket of column pilot operated check valve |
-
2012
- 2012-09-13 CN CN 201220465038 patent/CN202832580U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676118A (en) * | 2017-09-23 | 2018-02-09 | 鸿大智能机械有限公司 | The valve pocket of column pilot operated check valve |
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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 |
Effective date of registration: 20171110 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. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20210913 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |