CN203743546U - Pilot-operated type overflow valve - Google Patents
Pilot-operated type overflow valve Download PDFInfo
- Publication number
- CN203743546U CN203743546U CN201420027197.3U CN201420027197U CN203743546U CN 203743546 U CN203743546 U CN 203743546U CN 201420027197 U CN201420027197 U CN 201420027197U CN 203743546 U CN203743546 U CN 203743546U
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- CN
- China
- Prior art keywords
- filter
- liquid
- pilot
- seat
- containing cavity
- 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 pilot-operated type overflow valve. The pilot-operated type overflow valve comprises a liquid inlet and a pilot valve port. A filter assembly is connected between the liquid inlet and the pilot valve port in a conducted mode. The filter assembly comprises a filtering piece, a filter shell with one face open and a filter base for covering the opening. The filter shell and the filter base are matched to form a sealed integrity internally provided with a containing cavity for containing the filtering piece, the containing cavity is communicated with the liquid inlet and the pilot valve port, and the filtering piece is arranged in the containing cavity. The liquid flows into the valve from the liquid inlet, one end of a main valve element is full of the liquid, the liquid flows to the other end of the main valve element and the pilot valve port through the containing cavity, and due to the fact that the containing cavity is internally provided with the filtering piece, the liquid flowing through the containing cavity is filtered through the filtering piece, impurities in the liquid are filtered out, the liquid reaching to the pilot valve port has high cleanness, the occurrence that the pilot valve element cannot reset through an elastic piece due to the fact that the impurities block the pilot valve element is prevented, and normal working of the pilot-operated type overflow valve is guaranteed.
Description
Technical field
The utility model relates to a kind of relief valve, and more particularly, it relates to a kind of pilot operated compound relief valve.
Background technique
Pilot operated compound relief valve is the one of relief valve, for controlling hydraulic system pressure or utilizing pressure to control other element actions as signal.
At present, pilot operated compound relief valve on market, it comprises main valve assembly and pilot valve assembly, described main valve assembly comprises main valve body and is located at the main valve plug in main valve body, described main valve body is provided with liquid entering hole and liquid outlet, described main valve plug stops up respectively liquid entering hole and liquid outlet by its end and side, between described main valve plug and main valve body, support and be provided with elastic component, described pilot valve assembly comprises guide valve blocks and is located at the guide's spool in guide valve blocks, between described guide's spool and guide valve blocks, support and be provided with elastic component, described guide's spool and liquid contact surface form poppet port, the equal conducting of the two ends of described liquid entering hole and main valve plug and poppet port.When two ends and the poppet port of hydraulic shock main valve plug, in the time that poppet port is closed, because the hydraulic pressure at main valve plug two ends equates, main valve plug can not be moved, liquid entering hole and not conducting of liquid outlet, when pressure exceedes predefined value, poppet port is opened, and main valve plug two ends produce hydraulic difference, and main valve plug moves, make liquid entering hole and liquid outlet conducting, play the effect of the hydraulic pressure of the liquid of controlling conducting.
This pilot operated compound relief valve, the control of its pressure relies on pilot valve assembly to realize, for effectively ensureing hydraulic control, its turbidity test to liquid are had relatively high expectations, and in liquid, can there is unavoidably impurity, and easily make guide's spool stuck, cannot reset by elastic component, and existing pilot operated compound relief valve lacks the device that improves cleaning liquid degree, and then affect it and normally work.
Model utility content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of pilot operated compound relief valve, can filter liquid, improves cleaning liquid degree, ensures that it normally works.
For achieving the above object, the utility model provides following technological scheme: a kind of pilot operated compound relief valve, comprise liquid entering hole and poppet port, between described liquid entering hole and poppet port, conducting is connected with filter assemblies, described filter assemblies comprises the filter head housings of filter member, an opening and for covering the filter seat of opening, described filter head housings and filter seat coordinate the entirety that forms sealing, its inside is formed for the holding cavity of accommodating filter member, the equal conducting of described holding cavity and liquid entering hole and poppet port, described filter member is arranged in holding cavity.
By adopting technique scheme, liquid flows into from liquid entering hole, be full of one end of main valve plug, flow to again the other end and the poppet port of main valve plug by holding cavity, owing to being provided with filter member in holding cavity, filter through filter member by the liquid of holding cavity, by impurity elimination wherein, make the liquid that arrives poppet port have higher turbidity test, prevent because guide's spool that the stuck guide's spool of impurity causes cannot reset by elastic component, ensure the normal work of pilot operated compound relief valve.
The utility model is further set to: described filter member is filter core, described filter core comprises the joint for being connected with filter seat, in described joint, be provided with through hole, described filter seat is provided with the siphunculus with poppet port conducting, described through hole and siphunculus conducting, described joint and filter seat surface of contact are provided with filter core seal ring.
By adopting technique scheme, liquid is through filter element filtering, liquid after filtration flow to filter core inside, by the path of the conducting poppet port that formed by through hole and siphunculus, flow to poppet port, at joint and filter seat joint, filter core seal ring is set, liquid and the mutual isolation of filtering rear liquid before having ensured to filter, can be by the slit flow mistake between joint and filter seat, ensure filtering effect, guarantee flow to turbidity test and then the guarantee pilot operated compound relief valve of the liquid of poppet port and normally works.
The utility model is further set to: described filter seat is cylindric and is embedded in filter head housings, and described filter seat and filter head housings surface of contact are provided with filter seat seal ring.
By adopting technique scheme, improve the sealing between filter seat and filter head housings, after ensureing to filter, clean liquid is not subject to secondary pollution, improves the stability of work.
The utility model is further set to: described filter seat seal ring arranges two, and both are located at respectively the both sides up and down of siphunculus.
By adopting technique scheme, ensure simultaneously sealing outside logical liquid in pipe and filter head housings and with holding cavity inner filtration before the sealing of liquid, ensure cleaning liquid degree, the normal work of guarantee pilot operated compound relief valve.
Brief description of the drawings
Fig. 1 is the utility model pilot operated compound relief valve embodiment's structural representation.
Description of reference numerals: 1, liquid entering hole; 2, poppet port; 3, filter assemblies; 31, filter member; 311, joint; 3111, through hole; 3112, filter core seal ring; 32, filter head housings; 33, filter seat; 331, siphunculus; 332, filter seat seal ring; 34, holding cavity.
Embodiment
With reference to Fig. 1, the utility model pilot operated compound relief valve embodiment is described further.
A kind of pilot operated compound relief valve, comprise liquid entering hole 1 and poppet port 2, between described liquid entering hole 1 and poppet port 2, conducting is connected with filter assemblies 3, described filter assemblies 3 comprises the filter head housings 32 of filter member 31, an opening and for covering the filter seat 33 of opening, described filter head housings 32 and filter seat 33 coordinate the entirety that forms sealing, its inside is formed for the holding cavity 34 of accommodating filter member 31, described holding cavity 34 and liquid entering hole 1 and the equal conducting of poppet port 2, described filter member 31 is arranged in holding cavity 34.
By adopting technique scheme, liquid flows into from liquid entering hole 1, be full of one end of main valve plug, flow to again the other end and the poppet port 2 of main valve plug by holding cavity 34, owing to being provided with filter member 31 in holding cavity 34, liquid by holding cavity 34 filters through filter member 31, by impurity elimination wherein, make the liquid that arrives poppet port 2 have higher turbidity test, prevent because guide's spool that the stuck guide's spool of impurity causes cannot reset by elastic component, ensure the normal work of pilot operated compound relief valve.
Described filter member 31 is filter core, described filter core comprises the joint 311 for being connected with filter seat 33, in described joint 311, be provided with through hole 3111, described filter seat 33 is provided with the siphunculus 331 with poppet port 2 conductings, described through hole 3111 and siphunculus 331 conductings, described joint 311 is provided with filter core seal ring 3112 with filter seat 33 surface of contact.
By adopting technique scheme, liquid is through filter element filtering, liquid after filtration flow to filter core inside, by the path of the conducting poppet port 2 that formed by through hole 3111 and siphunculus 331, flow to poppet port 2, in joint 311 and filter seat 33 joints, filter core seal ring 3112 is set, liquid and the mutual isolation of filtering rear liquid before having ensured to filter, can be by the slit flow mistake between joint 311 and filter seat 33, ensure filtering effect, guarantee flow to turbidity test and then the guarantee pilot operated compound relief valve of the liquid of poppet port 2 and normally works.
Described filter seat 33 is cylindric and is embedded in filter head housings 32, and described filter seat 33 is provided with filter seat seal ring 332 with filter head housings 32 surface of contact.
By adopting technique scheme, improve the sealing between filter seat 33 and filter head housings 32, after ensureing to filter, clean liquid is not subject to secondary pollution, improves the stability of work.
Described filter seat seal ring 332 arranges two, and both are located at respectively the both sides up and down of siphunculus 331.
By adopting technique scheme, ensure simultaneously sealing outside the interior liquid of siphunculus 331 and filter head housings 32 and with holding cavity 34 inner filtrations before the sealing of liquid, ensure cleaning liquid degree, the normal work of guarantee pilot operated compound relief valve.
Claims (4)
1. a pilot operated compound relief valve, comprise liquid entering hole and poppet port, it is characterized in that: between described liquid entering hole and poppet port, conducting is connected with filter assemblies, described filter assemblies comprises the filter head housings of filter member, an opening and for covering the filter seat of opening, described filter head housings and filter seat coordinate the entirety that forms sealing, its inside is formed for the holding cavity of accommodating filter member, the equal conducting of described holding cavity and liquid entering hole and poppet port, described filter member is arranged in holding cavity.
2. pilot operated compound relief valve according to claim 1, it is characterized in that: described filter member is filter core, described filter core comprises the joint for being connected with filter seat, in described joint, be provided with through hole, described filter seat is provided with the siphunculus with poppet port conducting, described through hole and siphunculus conducting, described joint and filter seat surface of contact are provided with filter core seal ring.
3. pilot operated compound relief valve according to claim 1 and 2, is characterized in that: described filter seat is cylindric and is embedded in filter head housings, and described filter seat and filter head housings surface of contact are provided with filter seat seal ring.
4. pilot operated compound relief valve according to claim 3, is characterized in that: described filter seat seal ring arranges two, and both are located at respectively the both sides up and down of siphunculus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420027197.3U CN203743546U (en) | 2014-01-16 | 2014-01-16 | Pilot-operated type overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420027197.3U CN203743546U (en) | 2014-01-16 | 2014-01-16 | Pilot-operated type overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743546U true CN203743546U (en) | 2014-07-30 |
Family
ID=51343347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420027197.3U Expired - Fee Related CN203743546U (en) | 2014-01-16 | 2014-01-16 | Pilot-operated type overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743546U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439015A (en) * | 2016-11-04 | 2017-02-22 | 西安航空动力控制科技有限公司 | Guide sleeve sealing structure for end face high-pressure large-drift-diameter oil way |
| CN111692266A (en) * | 2020-06-11 | 2020-09-22 | 中国第一汽车股份有限公司 | Electro-hydraulic proportional valve and continuous damping control shock absorber |
-
2014
- 2014-01-16 CN CN201420027197.3U patent/CN203743546U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439015A (en) * | 2016-11-04 | 2017-02-22 | 西安航空动力控制科技有限公司 | Guide sleeve sealing structure for end face high-pressure large-drift-diameter oil way |
| CN111692266A (en) * | 2020-06-11 | 2020-09-22 | 中国第一汽车股份有限公司 | Electro-hydraulic proportional valve and continuous damping control shock absorber |
| CN111692266B (en) * | 2020-06-11 | 2021-12-03 | 中国第一汽车股份有限公司 | Electro-hydraulic proportional valve and continuous damping control shock absorber |
| EP4166811A4 (en) * | 2020-06-11 | 2024-06-12 | China Faw Co Ltd | Electro-hydraulic proportional valve and shock absorber having continuous damping control |
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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: 20140730 Termination date: 20170116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |