CN202073860U - Threaded plug-in adjustable buffer overflow valve - Google Patents
Threaded plug-in adjustable buffer overflow valve Download PDFInfo
- Publication number
- CN202073860U CN202073860U CN2011201871849U CN201120187184U CN202073860U CN 202073860 U CN202073860 U CN 202073860U CN 2011201871849 U CN2011201871849 U CN 2011201871849U CN 201120187184 U CN201120187184 U CN 201120187184U CN 202073860 U CN202073860 U CN 202073860U
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- valve
- volumetric cylinder
- spool
- relief valve
- spring
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Abstract
A threaded plug-in adjustable buffer overflow valve includes a valve housing, a valve seat, a valve core, a spring and a buffer piston, wherein the valve housing is provided with a first oil port; the valve seat is arranged at the front end part of the valve housing and provided with a second oil port; the valve core is arranged in the valve housing; a pressure-regulating threaded sleeve is provided with a front end inner cavity, is arranged at the rear end part of the valve housing, and can axially move so as to further change the axial elastic force of the spring; the buffer piston includes a guiding part at the rear end, a radially-protruding convex ring part at the middle part and a volumetric cylinder part with a front end axial opening matched with the rear end part of the valve core; the rear end surface of the convex spring part is bigger than the front end surface thereof; a connecting passage for allowing oil liquid to flow from the volumetric cylinder part to the rear end outer side is arranged in the middle of the convex ring part; and a lateral passage for allowing the oil liquid to flow from the inner cavity of the volumetric cylinder part to the outer wall of the volumetric cylinder part is arranged on the lateral side of the volumetric cylinder part. Compared with the prior art, the threaded plug-in adjustable buffer overflow valve has the advantages that the function of buffer overflowing is realized, and the whole performance is reliable and stable under the coordination of the valve core, the buffer piston and the pressure-regulating valve housing.
Description
Technical field
The utility model relates to a kind of relief valve, relates in particular to a kind of thread cartridge formula adjustable type buffering relief valve.Can be applicable in digger revolving device, the crane rotation device.
Background technique
In the machinery swivel gear in modern times, widely applied the pooling feature oil hydraulic circuit, as digger revolving device, crane rotation device etc., wherein cushioning relief valve is the crucial hydraulic element of this type systematic, and the quality of buffering relief valve performance directly affects the performance of main frame.Existing buffering relief valve is divided into board-like buffering relief valve by Placement and plug-in type cushions two kinds of relief valves, in order to reduce installing space, improves system reliability in system, generally adopts plug-in type buffering relief valve.Existing plug-in type buffering relief valve has the following disadvantages: at first, the preposition filter screen of throttling damping, in case filter screen, the contaminated severe obstruction of damping hole, damping was lost efficacy, and turned round unablely, pollutant removal does not fall, and can only change damping plug; Secondly, damping period is long or too short, can cause that the buffer position angle is incorrect, causes main frame pressure, damping shakiness, damages main frame gear or motor, causes for the main frame reliability and has a strong impact on; Once more, valve part accuracy of manufacturing requires high, the technological requirement complexity, and process equipment requires characteristics such as height; At last, fixed non-adjustable, can't satisfy the demand of user's different pressures, can only be in factory set.In sum, existing plug-in type buffering structure of relief valve also can be further improved.
The model utility content
Technical problem to be solved in the utility model is the thread cartridge formula adjustable type buffering relief valve that provides a kind of reliable performance stable at the above-mentioned state of the art.
Another technical problem to be solved in the utility model provides a kind of simple in structure, and process equipment requires low thread cartridge formula adjustable type buffering relief valve.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of thread cartridge formula adjustable type buffering relief valve is characterized in that comprising
Valve pocket has first hydraulic fluid port;
Valve seat is located at the front end of aforementioned valve pocket and is had second hydraulic fluid port of axial setting,
Spool can be located in the aforesaid valve pocket with moving axially, and front end cooperates the break-make that can control between second hydraulic fluid port and first hydraulic fluid port with the rear port of aforementioned valve seat, and the axial hollow in middle part forms middle passage;
Spring is placed on the aforesaid spool and forces spool to remain the trend that moves to the valve seat rear port,
The pressure regulation swivel nut has the front end inner chamber, and the rearward end of being located at aforementioned valve pocket also can move axially and then can change the axial elastic force of aforementioned spring; And
Damper piston, be located at the front end inner chamber of aforementioned pressure regulation swivel nut, comprise the guide portion of rear end, the projecting ring section of middle part radial protrusion and the volumetric cylinder portion that the front end axially open cooperates with aforementioned spool rearward end, the ear end face of aforementioned projecting ring section is greater than front-end face, and, have fuel feeding liquid in the middle of the projecting ring section and flow to the connecting passage in the outside, rear end from volumetric cylinder portion, volumetric cylinder portion side direction has the side path that fuel feeding liquid flows to volumetric cylinder portion outer wall from volumetric cylinder portion inner chamber.
Further, access port is provided with plug in the front end of described spool, and this plug axially has damping hole, and this plug front-end face is provided with a filter screen.
Further, the front end internal chamber wall of described pressure regulation swivel nut has and cooperates the convex shoulder that continues to move forward with the restriction damper piston with the front-end face of described projecting ring section.
Further, the front end of described pressure regulation swivel nut forms the fuel feeding liquid phase and passes to the oily passage that makes fluid maintenance balance.
As preferably, the front end of described volumetric cylinder portion is provided with a spring seat, and the front end of described spool has a spacing shoulder, and described spring front end and spacing shoulder offset, and rear end and aforesaid spring seat offset.
The location shoulder of energy stop bit when further, described valve pocket outer wall has assembling.
The front end compression face of described spool is greater than the rear end compression face.Reduced the pressure bearing area, LCS improves anti-fatigue ability.Be convenient to the spring design simultaneously, reach flow, the maximum performance of pressure, be fit to the machinery of large-tonnage high pressure.
Be convenient to assembling, described pressure regulation swivel nut hollow forms an inner chamber and rearward end is provided with a sprue, and one is located in the cavity of pressure regulation swivel nut and is positioned at the sprue front end for the guide sleeve of described guide portion guiding.
Compared with prior art, advantage of the present utility model is: spool, damper piston and pressure regulation valve pocket coordinated, can realize buffering overflow effect, and overall performance is reliable and stable, guarantees permanently effective use.Simultaneously, each modular construction is simple, is easy to shaping operation.
Description of drawings
Fig. 1 is the example structure schematic representation.
Fig. 2 is a spool enlarged diagram among Fig. 1.
Fig. 3 is an A portion enlarged view among Fig. 2.
Fig. 4 is a damper piston enlarged view among Fig. 1.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the thread cartridge formula adjustable type buffering relief valve in the present embodiment comprises valve pocket 1, valve seat 2, spool 4, spring 8, pressure regulation swivel nut 3 and damper piston 5, and valve pocket 1 has first hydraulic fluid port 11, the location shoulder 12 of energy stop bit when outer wall has assembling.Valve seat 2 is located at the front end of valve pocket 1 and is had second hydraulic fluid port 21 of axial setting.
In conjunction with Fig. 2 and shown in Figure 3, spool 4 can be located in the valve pocket 1 with moving axially, front end cooperates the break-make that can control between second hydraulic fluid port 21 and first hydraulic fluid port 11 with the rear port of valve seat 2, middle part axially hollow forms middle passage 41, passage 41 ports are provided with plug 43 in the front end of spool 4, this plug 43 axially has damping hole 44, and these plug 43 front-end faces are provided with a filter screen 45.And the front end compression face of spool 4 is greater than the rear end compression face.
In conjunction with shown in Figure 4, damper piston 5 is located at the front end inner chamber of pressure regulation swivel nut 3, comprise the guide portion 51 of rear end, the projecting ring section 52 of middle part radial protrusion and the volumetric cylinder portion 53 that the front end axially open cooperates with the spool rearward end, the ear end face 56 of projecting ring section 52 is greater than front-end face 57, and, have fuel feeding liquid in the middle of the projecting ring section 52 and flow to the connecting passage 54 in the outside, rear end from volumetric cylinder portion, volumetric cylinder portion 53 side direction have the side path 55 that fuel feeding liquid flows to volumetric cylinder portion outer wall from volumetric cylinder portion inner chamber.
Pressure regulation swivel nut 3 hollows form an inner chamber, and pressure regulation swivel nut 3 is located at the rearward end of valve pocket 1 and can be moved axially and then can change the axial elastic force of spring 8; Further, the front end internal chamber wall of pressure regulation swivel nut 3 has and cooperates the convex shoulder 31 that continues to move forward with the restriction damper piston with the front-end face 57 of projecting ring section.The front end of pressure regulation swivel nut 3 forms the fuel feeding liquid phase and passes to the oily passage 32 that makes fluid maintenance balance.Pressure regulation swivel nut 3 rearward end are provided with a sprue 7, and guide sleeve 6 is located in the cavity of pressure regulation swivel nut 3 and is positioned at sprue 7 front ends, for guide portion 51 guiding.
When second hydraulic fluid port, 21 pressure of buffering relief valve are instantaneous when being elevated to spring 8 and presetting power, spool 4 is opened overflows, and at this moment valve opening pressure is lower, and fluid is from 11 circulations of second hydraulic fluid port, 21 to first hydraulic fluid ports; Fluid is full of valve insertion very soon simultaneously, because the area of damper piston 5 is much larger than the area of spool 4, spool 4 inner chamber fluid flow into damper piston 5 inner chambers through damping hole 44, damper piston 5 chamber pressures raise damper piston 5 moves to the front-end face 57 from projecting ring section to second hydraulic fluid port and the convex shoulder 31 of pressure regulation swivel nut are withstood, spring 8 compressions simultaneously, spool 4 is closed, produce secondary pressure, when second hydraulic fluid port, 21 pressure continue to be elevated to spring 8 setting secondary pressures, spool 4 is opened overflow, at this moment the valve oil pressure relief is higher, realizes the buffering relief function.
Claims (8)
1. a thread cartridge formula adjustable type buffering relief valve is characterized in that comprising
Valve pocket has first hydraulic fluid port;
Valve seat is located at the front end of aforementioned valve pocket and is had second hydraulic fluid port of axial setting;
Spool can be located in the aforesaid valve pocket with moving axially, and front end cooperates the break-make that can control between second hydraulic fluid port and first hydraulic fluid port with the rear port of aforementioned valve seat, and the axial hollow in middle part forms middle passage;
Spring is placed on the aforesaid spool and forces spool to remain the trend that moves to the valve seat rear port,
The pressure regulation swivel nut has the front end inner chamber, and the rearward end of being located at aforementioned valve pocket also can move axially and then can change the axial elastic force of aforementioned spring; And
Damper piston, be located at the front end inner chamber of aforementioned pressure regulation swivel nut, comprise the guide portion of rear end, the projecting ring section of middle part radial protrusion and the volumetric cylinder portion that the front end axially open cooperates with aforementioned spool rearward end, the ear end face of aforementioned projecting ring section is greater than front-end face, and, have fuel feeding liquid in the middle of the projecting ring section and flow to the connecting passage in the outside, rear end from volumetric cylinder portion, volumetric cylinder portion side direction has the side path that fuel feeding liquid flows to volumetric cylinder portion outer wall from volumetric cylinder portion inner chamber.
2. thread cartridge formula adjustable type according to claim 1 buffering relief valve is characterized in that access port is provided with plug in the front end of described spool, and this plug axially has damping hole, and this plug front-end face is provided with a filter screen.
3. thread cartridge formula adjustable type according to claim 1 buffering relief valve, the front end internal chamber wall that it is characterized in that described pressure regulation swivel nut have with the front-end face of described projecting ring section and cooperate to limit the convex shoulder that damper piston continues to move forward.
4. thread cartridge formula adjustable type according to claim 1 buffering relief valve, the front end that it is characterized in that described pressure regulation swivel nut form the fuel feeding liquid phase and pass to and make fluid keep the oily passage of balance.
5. thread cartridge formula adjustable type buffering relief valve according to claim 1, the front end that it is characterized in that described volumetric cylinder portion is provided with a spring seat, the front end of described spool has a spacing shoulder, and described spring front end and spacing shoulder offset, and rear end and aforesaid spring seat offset.
6. thread cartridge formula adjustable type buffering relief valve according to claim 1 is characterized in that described valve pocket outer wall has the location shoulder of energy stop bit when assembling.
7. thread cartridge formula adjustable type buffering relief valve according to claim 1, the front end compression face that it is characterized in that described spool is greater than the rear end compression face.
8. thread cartridge formula adjustable type buffering relief valve according to claim 1, it is characterized in that described pressure regulation swivel nut hollow forms an inner chamber and rearward end is provided with a sprue, one is located in the cavity of pressure regulation swivel nut and is positioned at the sprue front end for the guide sleeve of described guide portion guiding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201871849U CN202073860U (en) | 2011-06-01 | 2011-06-01 | Threaded plug-in adjustable buffer overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201871849U CN202073860U (en) | 2011-06-01 | 2011-06-01 | Threaded plug-in adjustable buffer overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073860U true CN202073860U (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201871849U Expired - Lifetime CN202073860U (en) | 2011-06-01 | 2011-06-01 | Threaded plug-in adjustable buffer overflow valve |
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| Country | Link |
|---|---|
| CN (1) | CN202073860U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913513A (en) * | 2012-10-31 | 2013-02-06 | 陕西航天动力高科技股份有限公司 | High-reliability directly operated type safety valve device with hydraulic balance principle |
| CN102996557A (en) * | 2012-12-27 | 2013-03-27 | 宁波广天赛克思液压有限公司 | Pressure adjustable buffer overflow valve |
| CN103615424A (en) * | 2013-12-09 | 2014-03-05 | 怀特(中国)驱动产品有限公司 | Direct-operated-type hydraulic threaded insertion buffer overflow valve |
| CN105909584A (en) * | 2016-03-02 | 2016-08-31 | 杭州力龙液压有限公司 | Buffer overflow valve |
| CN105909583A (en) * | 2016-03-02 | 2016-08-31 | 杭州力龙液压有限公司 | Buffer overflow valve and hydraulic system |
| CN106224313A (en) * | 2016-08-22 | 2016-12-14 | 江苏二马液压元件有限公司 | A kind of pioneer pump overflow valve |
| CN107939766A (en) * | 2017-12-28 | 2018-04-20 | 邵立坤 | A kind of oil supplementation buffer valve |
| CN107939767A (en) * | 2017-12-28 | 2018-04-20 | 邵立坤 | A kind of oil supplementation buffer valve |
| CN108061069A (en) * | 2017-12-19 | 2018-05-22 | 宁波文泽机电技术开发有限公司 | Buffer overflow valve |
| CN109058208A (en) * | 2018-10-17 | 2018-12-21 | 邵玉刚 | A kind of buffer overflow valve |
| CN109058213A (en) * | 2018-11-05 | 2018-12-21 | 李军 | A kind of valve |
| CN113217497A (en) * | 2021-05-24 | 2021-08-06 | 西安航天远征流体控制股份有限公司 | Plug-in type energy storage overflow valve |
-
2011
- 2011-06-01 CN CN2011201871849U patent/CN202073860U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913513A (en) * | 2012-10-31 | 2013-02-06 | 陕西航天动力高科技股份有限公司 | High-reliability directly operated type safety valve device with hydraulic balance principle |
| CN102996557A (en) * | 2012-12-27 | 2013-03-27 | 宁波广天赛克思液压有限公司 | Pressure adjustable buffer overflow valve |
| CN103615424A (en) * | 2013-12-09 | 2014-03-05 | 怀特(中国)驱动产品有限公司 | Direct-operated-type hydraulic threaded insertion buffer overflow valve |
| CN103615424B (en) * | 2013-12-09 | 2015-12-30 | 怀特(中国)驱动产品有限公司 | Direct moving type hydraulic thread cartridge buffer overflow valve |
| CN105909583B (en) * | 2016-03-02 | 2018-01-30 | 杭州力龙液压有限公司 | Buffer relief valve and hydraulic system |
| CN105909584A (en) * | 2016-03-02 | 2016-08-31 | 杭州力龙液压有限公司 | Buffer overflow valve |
| CN105909583A (en) * | 2016-03-02 | 2016-08-31 | 杭州力龙液压有限公司 | Buffer overflow valve and hydraulic system |
| CN106224313B (en) * | 2016-08-22 | 2018-02-27 | 江苏二马液压元件有限公司 | A kind of pioneer pump overflow valve |
| CN106224313A (en) * | 2016-08-22 | 2016-12-14 | 江苏二马液压元件有限公司 | A kind of pioneer pump overflow valve |
| CN108061069A (en) * | 2017-12-19 | 2018-05-22 | 宁波文泽机电技术开发有限公司 | Buffer overflow valve |
| CN107939766A (en) * | 2017-12-28 | 2018-04-20 | 邵立坤 | A kind of oil supplementation buffer valve |
| CN107939767A (en) * | 2017-12-28 | 2018-04-20 | 邵立坤 | A kind of oil supplementation buffer valve |
| CN109058208A (en) * | 2018-10-17 | 2018-12-21 | 邵玉刚 | A kind of buffer overflow valve |
| CN109058208B (en) * | 2018-10-17 | 2020-05-22 | 浙江奥诗柯流体控制股份有限公司 | Buffer overflow valve |
| CN109058213A (en) * | 2018-11-05 | 2018-12-21 | 李军 | A kind of valve |
| CN109058213B (en) * | 2018-11-05 | 2019-12-03 | 万静琼 | A kind of valve |
| CN113217497A (en) * | 2021-05-24 | 2021-08-06 | 西安航天远征流体控制股份有限公司 | Plug-in type energy storage overflow valve |
| CN113217497B (en) * | 2021-05-24 | 2023-11-21 | 西安航天远征流体控制股份有限公司 | Plug-in type energy storage overflow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |
|
| CX01 | Expiry of patent term |