CN202091279U - Thread cartridge buffering overflow valve - Google Patents
Thread cartridge buffering overflow valve Download PDFInfo
- Publication number
- CN202091279U CN202091279U CN201120187182XU CN201120187182U CN202091279U CN 202091279 U CN202091279 U CN 202091279U CN 201120187182X U CN201120187182X U CN 201120187182XU CN 201120187182 U CN201120187182 U CN 201120187182U CN 202091279 U CN202091279 U CN 202091279U
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- valve
- piston
- spool
- damper piston
- inner chamber
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Abstract
The utility model discloses a thread cartridge buffering overflow valve which comprises a valve sleeve, a valve seat, a valve core, a buffer piston, a spring, a throttling piston and a valve cover, wherein the valve sleeve is provided with a first oil port; the valve seat is arranged at the front end part of the valve sleeve and is provided with a second oil port axially; the valve core can axially move to be arranged in the valve sleeve; a middle channel is axially and hollowly formed in the middle part; an inner cavity is hollowly formed in the buffer piston; a front end is spliced with the rear end of the valve core; and the throttling piston is arranged at the rear end part of the inner cavity of the buffer piston and is provided with a damping hole for communicating the front part and the rear part of the inner cavity of the buffer piston. Compared with the prior art, the thread cartridge buffering overflow valve has the advantages that the valve core, the buffer piston and the throttling piston are cooperatively matched to realize the function of buffering and overflowing, the integral performance is reliable and stable, and the thread cartridge buffering overflow valve is effectively used for a long period. Meanwhile, each component has a simple structure and is easy to shape and process.
Description
Technical field
The utility model relates to a kind of relief valve, relates in particular to a kind of thread cartridge formula 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 damping of flow check piston gap, in case the contaminated obstruction of damping, damping was lost efficacy, and turned round unable; 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.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 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 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 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;
Damper piston, hollow forms inner chamber body, and peg graft in the rear end of front end and aforementioned spool;
Spring is placed on the aforesaid damper piston and forces spool to remain the trend that moves to the valve seat rear port;
Flow check piston is located at the inner chamber body rearward end of aforementioned damper piston and is had the damping hole that is communicated with damper piston inner chamber body front and back; And
Valve gap is located at the rearward end of aforementioned valve pocket,
And the front end compression face of aforementioned spool is less than damper piston rear end compression face.
Flow check piston is preferably as follows setting: the inner chamber body rear end of described damper piston has shoulder in, and the front-end face of described flow check piston is limited in shoulder in this, and a sprue that is used for spacing flow check piston ear end face is positioned the inner chamber body rearward end of damper piston.
Spring is preferably as follows design: the rear end of described damper piston has the convex shoulder, and a spring seat is located at this convex shoulder front-end face, and described spring rear end and this spring seat offset, and the ear end face of front end and spool offsets.
Be convenient to assembling, the location shoulder of energy stop bit when described valve pocket outer wall has assembling.
Further, described flow check piston comprises the preceding guide portion of front end, the back guide portion and the middle gap damper portion of rear end.
Further, the middle passage rear end of described spool forms the inner chamber that enlarges, and this inner chamber compression face is less than spool front end compression face.
Further, described valve sleeving inner wall has the convex shoulder that the restriction damper piston continues to move forward.
Compared with prior art, advantage of the present utility model is: spool, damper piston and flow check piston 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 an A portion enlarged view among Fig. 1.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, thread cartridge formula buffering relief valve in the present embodiment comprises valve pocket 1, valve seat 2, spool 4, damper piston 5, spring 6, flow check piston 7 and valve gap 8, valve pocket 1 has first hydraulic fluid port 11, the location shoulder 12 of energy stop bit when outer wall has assembling, valve pocket 1 inwall has the convex shoulder 13 that restriction damper piston 5 continues to move forward.Valve seat 2 is located at the front end of valve pocket 1 and is had second hydraulic fluid port 21 of axial setting.
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, the middle passage rear end of spool 4 forms the inner chamber 41 that enlarges, and these inner chamber 41 compression faces are less than spool 4 front end compression faces.
Further, the front end compression face of spool 4 is less than damper piston 5 rear end compression faces.Inner chamber body 52 rear ends of damper piston have shoulder in, and the front-end face of flow check piston 7 is limited in shoulder in this, and the sprue 72 that is used for spacing flow check piston ear end face is positioned inner chamber body 52 rearward end of damper piston.The rear end of damper piston 5 has convex shoulder 51, and spring seat 9 is located at this convex shoulder 51 front-end faces, and spring 6 rear ends and spring seat 9 offset, and the ear end face of front end and spool 4 offsets.
When buffering relief valve second hydraulic fluid port 21 pressure are instantaneous when being elevated to spring 6 and presetting power, spool is opened overflow, and at this moment valve opening pressure is lower, the circulation of second hydraulic fluid port, 21 to first hydraulic fluid ports, 11 fluid; Fluid is full of valve core cavity very soon simultaneously, because damper piston 5 ear end faces are much larger than the compression face of spool 4 front ends, spool 4 inner chamber fluid flow into damper piston 5 inner chambers through flow check piston 7 gaps and damping hole 71, damper piston 5 chamber pressures raise damper piston are withstood to the convex shoulder 13 that second hydraulic fluid port 21 moves to valve pocket, valve cuts out, produce secondary pressure, when second hydraulic fluid port, 21 pressure continue to be elevated to spring 6 setting secondary pressures, spool 4 is opened overflow, at this moment the valve oil pressure relief is higher, realizes the buffering relief function.
Claims (7)
1. a thread cartridge formula 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;
Damper piston, hollow forms inner chamber body, and peg graft in the rear end of front end and aforementioned spool;
Spring is placed on the aforesaid damper piston and forces spool to remain the trend that moves to the valve seat rear port;
Flow check piston is located at the inner chamber body rearward end of aforementioned damper piston and is had the damping hole that is communicated with damper piston inner chamber body front and back; And
Valve gap is located at the rearward end of aforementioned valve pocket,
And the front end compression face of aforementioned spool is less than damper piston rear end compression face.
2. thread cartridge formula buffering relief valve according to claim 1, the inner chamber body rear end that it is characterized in that described damper piston has shoulder in, and the front-end face of described flow check piston is limited in shoulder in this, and a sprue that is used for spacing flow check piston ear end face is positioned the inner chamber body rearward end of damper piston.
3. thread cartridge formula buffering relief valve according to claim 1, the rear end that it is characterized in that described damper piston has the convex shoulder, one spring seat is located at this convex shoulder front-end face, and described spring rear end and this spring seat offset, and the ear end face of front end and spool offsets.
4. thread cartridge formula 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.
5. thread cartridge formula buffering relief valve according to claim 1 is characterized in that described flow check piston comprises the preceding guide portion of front end, the back guide portion and the middle gap damper portion of rear end.
6. thread cartridge formula buffering relief valve according to claim 1 it is characterized in that the middle passage rear end of described spool forms the inner chamber that enlarges, and this inner chamber compression face is less than spool front end compression face.
7. thread cartridge formula buffering relief valve according to claim 1 is characterized in that described valve sleeving inner wall has the convex shoulder that the restriction damper piston continues to move forward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120187182XU CN202091279U (en) | 2011-06-01 | 2011-06-01 | Thread cartridge buffering overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120187182XU CN202091279U (en) | 2011-06-01 | 2011-06-01 | Thread cartridge buffering overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091279U true CN202091279U (en) | 2011-12-28 |
Family
ID=45366348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120187182XU Expired - Lifetime CN202091279U (en) | 2011-06-01 | 2011-06-01 | Thread cartridge buffering overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091279U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678645A (en) * | 2012-05-31 | 2012-09-19 | 常德中联重科液压有限公司 | Direct-acting overflow valve, direct-acting overflow valve group and hydraulic overflow loop |
| CN102777438A (en) * | 2012-08-17 | 2012-11-14 | 邓开忠 | Multifunctional integrated valve bank of hydraulic motor |
| CN104595271A (en) * | 2015-01-29 | 2015-05-06 | 南京萨伯工业设计研究院有限公司 | Anti-swing control method suitable for bidirectional hydraulic loop |
| CN108167256A (en) * | 2017-12-28 | 2018-06-15 | 邵立坤 | A kind of plug-in trimmer valve |
| CN108825837A (en) * | 2018-08-31 | 2018-11-16 | 青岛力克川液压机械有限公司 | A kind of buffer relief valve |
| CN109026888A (en) * | 2018-10-18 | 2018-12-18 | 宁波文泽机电技术开发有限公司 | A kind of rotary buffering valve |
| CN109058208A (en) * | 2018-10-17 | 2018-12-21 | 邵玉刚 | A kind of buffer overflow valve |
| CN109237056A (en) * | 2018-10-25 | 2019-01-18 | 太重集团榆次液压工业有限公司 | A kind of plug-in precompression valve |
| CN110285048A (en) * | 2019-07-19 | 2019-09-27 | 宁波克泰液压有限公司 | Screw thread inserting type speed sensitive load control valve |
| CN110966275A (en) * | 2019-12-30 | 2020-04-07 | 广东力源液压机械有限公司 | Damping buffering method of large-flow throttling buffering cartridge valve and cartridge valve |
| CN111911473A (en) * | 2020-06-30 | 2020-11-10 | 苏州远上精密机械有限公司 | Screw pressure regulating overflow valve |
| CN114278636A (en) * | 2021-12-29 | 2022-04-05 | 潍柴动力股份有限公司 | Hydraulic system and second-order buffer overflow valve device thereof |
-
2011
- 2011-06-01 CN CN201120187182XU patent/CN202091279U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678645B (en) * | 2012-05-31 | 2014-10-29 | 常德中联重科液压有限公司 | Direct-acting overflow valve, direct-acting overflow valve group and hydraulic overflow loop |
| CN102678645A (en) * | 2012-05-31 | 2012-09-19 | 常德中联重科液压有限公司 | Direct-acting overflow valve, direct-acting overflow valve group and hydraulic overflow loop |
| CN102777438A (en) * | 2012-08-17 | 2012-11-14 | 邓开忠 | Multifunctional integrated valve bank of hydraulic motor |
| CN104595271A (en) * | 2015-01-29 | 2015-05-06 | 南京萨伯工业设计研究院有限公司 | Anti-swing control method suitable for bidirectional hydraulic loop |
| CN108167256A (en) * | 2017-12-28 | 2018-06-15 | 邵立坤 | A kind of plug-in trimmer valve |
| CN108825837A (en) * | 2018-08-31 | 2018-11-16 | 青岛力克川液压机械有限公司 | A kind of buffer relief 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 |
| CN109058208A (en) * | 2018-10-17 | 2018-12-21 | 邵玉刚 | A kind of buffer overflow valve |
| CN109026888A (en) * | 2018-10-18 | 2018-12-18 | 宁波文泽机电技术开发有限公司 | A kind of rotary buffering valve |
| CN109237056A (en) * | 2018-10-25 | 2019-01-18 | 太重集团榆次液压工业有限公司 | A kind of plug-in precompression valve |
| CN110285048A (en) * | 2019-07-19 | 2019-09-27 | 宁波克泰液压有限公司 | Screw thread inserting type speed sensitive load control valve |
| CN110285048B (en) * | 2019-07-19 | 2024-03-19 | 宁波克泰液压有限公司 | Screw thread plug-in type speed sensitive load control valve |
| CN110966275A (en) * | 2019-12-30 | 2020-04-07 | 广东力源液压机械有限公司 | Damping buffering method of large-flow throttling buffering cartridge valve and cartridge valve |
| CN110966275B (en) * | 2019-12-30 | 2024-05-14 | 广东力源液压机械有限公司 | Damping buffer method of large-flow throttling buffer cartridge valve and cartridge valve |
| CN111911473A (en) * | 2020-06-30 | 2020-11-10 | 苏州远上精密机械有限公司 | Screw pressure regulating overflow valve |
| CN114278636A (en) * | 2021-12-29 | 2022-04-05 | 潍柴动力股份有限公司 | Hydraulic system and second-order buffer overflow valve device thereof |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |