CN201502763U - Directly-actuated overflow valve - Google Patents
Directly-actuated overflow valve Download PDFInfo
- Publication number
- CN201502763U CN201502763U CN2009201971341U CN200920197134U CN201502763U CN 201502763 U CN201502763 U CN 201502763U CN 2009201971341 U CN2009201971341 U CN 2009201971341U CN 200920197134 U CN200920197134 U CN 200920197134U CN 201502763 U CN201502763 U CN 201502763U
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- Expired - Fee Related
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Abstract
The utility model relates to a directly-actuated overflow valve which comprises a valve body (1) with an oil inlet (11) and an overflow nozzle (12). The valve body is inserted by a valve core component which divides the internal chamber of the valve body into a high-pressure chamber (A) and a low-pressure chamber (B). The overflow valve is characterized in that the valve core component comprises a valve seat (2), a cone valve core (3) and a spring (4); the valve seat is inserted on the valve body; the cone valve core is arranged in the valve seat and divides the internal chamber of the valve seat into a spring chamber (C), a middle chamber (D) and a damping chamber (E); the spring is arranged in the spring chamber and forms pressure to the cone valve core so that the cone valve core keeps a trend of stopping the communication of the spring chamber and the middle chamber; the spring chamber is communicated with the low-pressure chamber; the middle chamber is communicated with the high-pressure chamber; and the cone valve core is provided with a damping passage (31) that is communicated with the spring chamber and the damping chamber. The cone valve core introduces the back pressure of the overflow nozzle to the lower profile of the cone valve core under the action of the damping chamber through the damping passage so as to counteract most of the back pressure of overflow nozzle, thus greatly reducing the effect of the back pressure on the starting pressure of the overflow valve.
Description
Technical field
The utility model relates to a kind of valve, especially refers to a kind of hydraulic system plays the safety protection effect to the loop direct-acting overflow valve that is used for.
Background technique
Relief valve is one of most popular hydraulic element in the hydraulic system, by the control to system pressure, plays a part protection hydraulic system safety on the one hand; It is constant to keep system pressure to stablize on the other hand.Relief valve is divided into two kinds of direct-acting type and leading types, and that direct-acting overflow valve has is simple in structure, reliable operation and the high characteristics of speed of response, generally is used to the safety protection effect.Existing direct-acting overflow valve mostly is cone valve and ball-valve structure, and when system pressure surpassed the pressure that the relief valve spring sets, poppet valve core or steel ball be by jack-up, thereby system pressure is laid down.
But there is following shortcoming in existing direct-acting overflow valve:
When 1, the flow of overflow increased greatly, poppet valve core or steel ball caused the spool unstability because raising height increases, and produced spool flow velocity inequality on every side, thereby caused the generation of noise.
2, when system back pressure is too high, existing direct-acting overflow valve causes cracking pressure too high owing to do not possess the back pressure compensate function, influences the safety of system.
In sum, existing direct-acting overflow valve also can be further improved.
The model utility content
Technical problem to be solved in the utility model is that a kind of direct-acting overflow valve of opening steadily and having the back pressure compensate function is provided at above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of direct-acting overflow valve, comprise valve body with filler opening and flow-off, be fitted with mangetic core assembly on the valve body, this mangetic core assembly is divided into hyperbaric chamber that is communicated with filler opening and the low-pressure cavity that is communicated with overflow hole with the inner chamber of valve body, it is characterized in that: described mangetic core assembly comprises valve seat, poppet valve core and spring, described valve seat is inserted on the valve body, described poppet valve core is located in the valve seat, this poppet valve core is divided into spring chamber with the inner chamber of valve seat, intermediate cavity and damping cavity, described spring is located in the spring chamber and to poppet valve core and is formed pressure so that the trend that poppet valve core keeps blocking-up spring chamber and intermediate cavity to be communicated with, described spring chamber is communicated with low-pressure cavity, described intermediate cavity is communicated with hyperbaric chamber, has the damp channel that is communicated with described spring chamber and damping cavity on the described poppet valve core.
Above-mentioned valve seat is made up of adjustment seat and base, adjustment seat be threaded on the valve body and and the inner chamber of valve body between by the seal ring sealing, described base is spacing in the inner chamber of valve body, seals by seal ring between the inwall of base outer circumferential face and body cavity; Form described spring chamber between poppet valve core upper-end surface and the adjustment seat, between adjustment seat lower end surface and the base upper-end surface gap that is communicated with spring chamber and low-pressure cavity is arranged; Form described intermediate cavity between the male cone (strobilus masculinus) at described poppet valve core middle part and the top inner chamber of base, this intermediate cavity is communicated with described hyperbaric chamber by the duct on the base side wall, and the male cone (strobilus masculinus) of poppet valve core forms cone match being communicated with blocking-up spring chamber and intermediate cavity with the opening of base; Form described damping cavity between the lower end surface of described poppet valve core and the lower lumen of base.
Aforementioned valve seat construction is convenient to component-assembled such as poppet valve core springs in the inner chamber of valve body, also have by the leading role between poppet valve core bottom side face and the valve seat inner circle wall, guarantee that further poppet valve core can steadily open, make this relief valve stability further improve, and friction and noise.
Above-mentioned base periphery has ringwise outer convex shoulder, correspondence, and the middle part of described body cavity has the interior omoplate of joining with described outer convex shoulder retaining.Base carries out lower limit by the gear effect of outer convex shoulder and interior omoplate to base, by the conflict of spring to poppet valve core and base, base is carried out upper limit well simultaneously, so this structure is a kind of simple in structure with the spacing middle part at body cavity of base.
Above-mentioned adjustment seat upper-end surface has tapped hole, this tapped hole internal thread is connected with an adjusting screw rod, the lower end of this adjusting screw rod is stretched in the described spring chamber, also be provided with the relative spring chamber of the energy spring seat of slippage up and down in the described spring chamber, conflict in the lower end of adjusting screw rod and spring seat upper-end surface, conflicting in the upper end of described spring and the lower end surface of spring seat, conflicts in the lower end of spring and the upper-end surface of poppet valve core.By rotating adjusting screw rod, regulate the relative spring chamber of connecting rod and move up and down, and then regulate the preload pressure of main spring, to reach the effect of setting the relief valve cracking pressure.
For making the ground that is threaded between adjusting screw rod and the adjustment seat more firm, the upper-end surface of above-mentioned adjustment seat is fixed with the locking nut that is threaded with adjusting screw rod.
For making spring chamber and the extraneous excellent sealing effect that keeps, prevent that working medium (as hydraulic oil) is excessive from spring chamber, seal by seal ring between the outer circumferential face of above-mentioned spring seat and the inner circle wall of spring chamber.
For ease of this relief valve is connected in the hydraulic system, above-mentioned filler opening has two.This valve body plays the effect of three-way pipe like this, and filler opening also can be one certainly.
Compared with prior art, advantage of the present utility model is:
When 1, poppet valve core was opened, because the damping function of the damp channel of poppet valve core makes poppet valve core open steadily, stability was good, friction and noise.
2, because poppet valve core is guided to the following section that damping cavity acts on poppet valve core by damp channel with the back pressure of flow-off, thereby the back pressure of flow-off can be balanced out major part, therefore greatly reduce the influence of back pressure the relief valve cracking pressure.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is the utility model embodiment's a schematic diagram.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, be a preferred embodiment of the present utility model.
A kind of direct-acting overflow valve comprises the valve body 1 with filler opening 11 and flow-off 12, and the inner chamber of valve body 1 is T shape roughly, and filler opening 11 is positioned at the lower position of valve body, and has two on same axis, and overflow hole 12 is positioned at the upper position place of valve body.
Be fitted with mangetic core assembly on the valve body, this mangetic core assembly is divided into hyperbaric chamber A that is communicated with filler opening and the low-pressure cavity B that is communicated with overflow hole with the inner chamber of valve body 1;
Main improvement of the present utility model is: mangetic core assembly comprises valve seat 2, poppet valve core 3 and spring 4, described valve seat 2 is inserted on the valve body 1, poppet valve core 3 is located in the valve seat 2, this poppet valve core 3 is divided into spring chamber C, intermediate cavity D and damping cavity E with the inner chamber of valve seat 2, and spring 4 is located in the spring chamber C and to poppet valve core 3 and is formed pressure so that the trend that poppet valve core 3 keeps blocking-up spring chamber C and intermediate cavity D to be communicated with.
Form spring chamber C between poppet valve core 3 upper-end surfaces and the adjustment seat 21, between adjustment seat 21 lower end surfaces and base 22 upper-end surfaces gap X that is communicated with spring chamber C and low-pressure cavity B is arranged.
Form intermediate cavity D between the male cone (strobilus masculinus) at poppet valve core 3 middle parts and the top inner chamber of base 22, this intermediate cavity D is communicated with described hyperbaric chamber A by the duct on the base side wall 221, and the male cone (strobilus masculinus) of poppet valve core 3 forms cone match being communicated with blocking-up spring chamber C and intermediate cavity D with the opening of base 22;
Form damping cavity E between the lower lumen of the lower end surface of poppet valve core 3 and base 22, seal by seal ring 5 between the inwall of base 22 outer circumferential faces and body cavity, independently of one another to guarantee damping cavity E and intermediate cavity D, have the damp channel 31 that is communicated with described spring chamber C and damping cavity E on the poppet valve core 3, this damp channel 31 axially connects along poppet valve core 3.
Working principle of the present utility model and process are as follows:
As shown in Figure 2, be the hydraulic principle schematic representation of this direct-acting overflow valve.
The opening process of this relief valve and existing relief valve are basic identical, because damping promotes 31 existence on the poppet valve core 3, the slippage of poppet valve core 3 is subjected to damping function, and poppet valve core 3 can not opened fast, so poppet valve core 3 is opened steadily, stability is good, friction and noise.
Because poppet valve core 3 is guided to the lower end surface that damping cavity E acts on poppet valve core 3 by the damp channel on it 31 with the back pressure of flow-off 12, thereby the back pressure of flow-off 12 can be balanced out major part, therefore greatly reduce the influence of back pressure to the relief valve cracking pressure.
Claims (7)
1. direct-acting overflow valve, the valve body (1) that comprises have filler opening (11) and flow-off (12), be fitted with mangetic core assembly on the valve body, this mangetic core assembly is divided into hyperbaric chamber (A) that is communicated with filler opening and the low-pressure cavity (B) that is communicated with overflow hole with the inner chamber of valve body (1), it is characterized in that: described mangetic core assembly comprises valve seat (2), poppet valve core (3) and spring (4), described valve seat (2) is inserted on the valve body (1), described poppet valve core (3) is located in the valve seat (2), this poppet valve core (3) is divided into spring chamber (C) with the inner chamber of valve seat (2), intermediate cavity (D) and damping cavity (E), described spring (4) is located in the spring chamber (C) and to poppet valve core (3) and is formed pressure so that the trend that poppet valve core (3) keeps blocking-up spring chamber (C) and intermediate cavity (D) to be communicated with, described spring chamber (C) is communicated with low-pressure cavity (B), described intermediate cavity (D) is communicated with hyperbaric chamber (A), has the damp channel (31) that is communicated with described spring chamber (C) and damping cavity (E) on the described poppet valve core (3).
2. direct-acting overflow valve according to claim 1, it is characterized in that: described valve seat (2) is made up of adjustment seat (21) and base (22), adjustment seat (21) be threaded in that valve body (1) is gone up and and the inner chamber of valve body between by seal ring (5) sealing, described base (22) is spacing in the inner chamber of valve body (1), seals by seal ring (5) between the inwall of base (22) outer circumferential face and body cavity; Form described spring chamber (C) between poppet valve core (3) upper-end surface and the adjustment seat (21), between adjustment seat (21) lower end surface and base (22) upper-end surface gap (X) that is communicated with spring chamber (C) and low-pressure cavity (B) is arranged; Form described intermediate cavity (D) between the male cone (strobilus masculinus) at described poppet valve core (3) middle part and the top inner chamber of base (22), this intermediate cavity (D) is communicated with described hyperbaric chamber (A) by the duct on the base side wall (221), and the male cone (strobilus masculinus) of poppet valve core (3) forms cone match being communicated with blocking-up spring chamber (C) and intermediate cavity (D) with the opening of base (22); Form described damping cavity (E) between the lower lumen of the lower end surface of described poppet valve core (3) and base (22).
3. direct-acting overflow valve according to claim 2 is characterized in that: described base (22) periphery has ringwise outer convex shoulder (222), correspondence, and the middle part of described valve body (1) inner chamber has the interior omoplate (13) of joining with described outer convex shoulder (222) retaining.
4. direct-acting overflow valve according to claim 2, it is characterized in that: described adjustment seat (21) upper-end surface has tapped hole, this tapped hole internal thread is connected with an adjusting screw rod (6), the lower end of this adjusting screw rod (6) is stretched in the described spring chamber (C), also be provided with the relative spring chamber (C) of the energy spring seat of slippage (7) up and down in the described spring chamber (C), conflict in the lower end of adjusting screw rod (3) and spring seat (7) upper-end surface, conflicting in the lower end surface of the upper end of described spring (4) and spring seat (7), conflicts in the upper-end surface of the lower end of spring (4) and poppet valve core (3).
5. direct-acting overflow valve according to claim 4 is characterized in that: the upper-end surface of described adjustment seat (21) is fixed with the locking nut (8) that is threaded with adjusting screw rod (6).
6. direct-acting overflow valve according to claim 4 is characterized in that: seal by seal ring (5) between the inner circle wall of the outer circumferential face of described spring seat (7) and spring chamber (C).
7. according to the described direct-acting overflow valve of arbitrary claim in the claim 1～6, it is characterized in that: described filler opening (11) has two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201971341U CN201502763U (en) | 2009-09-21 | 2009-09-21 | Directly-actuated overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201971341U CN201502763U (en) | 2009-09-21 | 2009-09-21 | Directly-actuated overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201502763U true CN201502763U (en) | 2010-06-09 |
Family
ID=42453696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201971341U Expired - Fee Related CN201502763U (en) | 2009-09-21 | 2009-09-21 | Directly-actuated overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201502763U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536941A (en) * | 2012-01-16 | 2012-07-04 | 浙江师范大学 | Overflow-valve device for reversing mechanism in drilling equipment |
| CN103349508A (en) * | 2013-07-06 | 2013-10-16 | 佛山市顺德区科锐玛电器有限公司 | Coffee machine protection valve |
| CN103511690A (en) * | 2012-06-14 | 2014-01-15 | 住友橡胶工业株式会社 | Overflow valve and compressor installed with same |
| CN104747537A (en) * | 2014-07-22 | 2015-07-01 | 施周平 | Safety valve for multi-way valve |
| CN105697801A (en) * | 2016-04-28 | 2016-06-22 | 黄斌 | Novel overflow valve |
| CN105715621A (en) * | 2016-04-28 | 2016-06-29 | 黄斌 | Direct relief valve with guide structure |
| CN106438583A (en) * | 2016-10-11 | 2017-02-22 | 上海航天控制技术研究所 | Novel large-flow and small-inner-leakage-flow direct-acting type overflow valve |
| CN108131345A (en) * | 2017-12-21 | 2018-06-08 | 宁波文泽机电技术开发有限公司 | A kind of high-damping direct-acting overflow valve |
| CN108758065A (en) * | 2018-08-28 | 2018-11-06 | 油威力液压科技股份有限公司 | Digital big flow electric rotating machine drives ball screw type direct acting overflow valve |
| CN111810687A (en) * | 2020-06-15 | 2020-10-23 | 徐兴勇 | Pressure relief direct-acting overflow 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 |
| CN114183425A (en) * | 2021-11-30 | 2022-03-15 | 华中科技大学 | Damping element matched with adjustable gap, direct-acting overflow valve and pilot-operated overflow valve |
| CN114321066A (en) * | 2021-12-28 | 2022-04-12 | 华中科技大学 | Safety overflow valve with self-adaptive damping adjustment |
-
2009
- 2009-09-21 CN CN2009201971341U patent/CN201502763U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536941A (en) * | 2012-01-16 | 2012-07-04 | 浙江师范大学 | Overflow-valve device for reversing mechanism in drilling equipment |
| CN103511690A (en) * | 2012-06-14 | 2014-01-15 | 住友橡胶工业株式会社 | Overflow valve and compressor installed with same |
| CN103349508A (en) * | 2013-07-06 | 2013-10-16 | 佛山市顺德区科锐玛电器有限公司 | Coffee machine protection valve |
| CN103349508B (en) * | 2013-07-06 | 2015-08-26 | 佛山市顺德区科锐玛电器有限公司 | Coffee machine protection valve |
| CN104747537A (en) * | 2014-07-22 | 2015-07-01 | 施周平 | Safety valve for multi-way valve |
| CN105697801A (en) * | 2016-04-28 | 2016-06-22 | 黄斌 | Novel overflow valve |
| CN105715621A (en) * | 2016-04-28 | 2016-06-29 | 黄斌 | Direct relief valve with guide structure |
| CN106438583A (en) * | 2016-10-11 | 2017-02-22 | 上海航天控制技术研究所 | Novel large-flow and small-inner-leakage-flow direct-acting type overflow valve |
| CN108131345A (en) * | 2017-12-21 | 2018-06-08 | 宁波文泽机电技术开发有限公司 | A kind of high-damping direct-acting overflow valve |
| CN108131345B (en) * | 2017-12-21 | 2019-12-03 | 北京市捷瑞特弹性阻尼体技术研究中心 | A kind of high-damping direct-acting overflow valve |
| CN108758065A (en) * | 2018-08-28 | 2018-11-06 | 油威力液压科技股份有限公司 | Digital big flow electric rotating machine drives ball screw type direct acting overflow valve |
| CN111810687A (en) * | 2020-06-15 | 2020-10-23 | 徐兴勇 | Pressure relief direct-acting overflow valve |
| CN111810687B (en) * | 2020-06-15 | 2022-02-11 | 武汉伯斯特阀门集团有限公司 | Pressure relief direct-acting overflow 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 |
| CN114183425A (en) * | 2021-11-30 | 2022-03-15 | 华中科技大学 | Damping element matched with adjustable gap, direct-acting overflow valve and pilot-operated overflow valve |
| CN114183425B (en) * | 2021-11-30 | 2023-02-14 | 华中科技大学 | Damping element matched with adjustable gap, direct-acting overflow valve and pilot-operated overflow valve |
| CN114321066A (en) * | 2021-12-28 | 2022-04-12 | 华中科技大学 | Safety overflow valve with self-adaptive damping adjustment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20130921 |