CN202971383U - Proportional overflow valve with position feedback - Google Patents
Proportional overflow valve with position feedback Download PDFInfo
- Publication number
- CN202971383U CN202971383U CN 201320059832 CN201320059832U CN202971383U CN 202971383 U CN202971383 U CN 202971383U CN 201320059832 CN201320059832 CN 201320059832 CN 201320059832 U CN201320059832 U CN 201320059832U CN 202971383 U CN202971383 U CN 202971383U
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- valve
- angle
- valve core
- valve seat
- cone
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- 238000006073 displacement reaction Methods 0.000 claims description 9
- 238000005336 cracking Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model discloses a proportional overflow valve with position feedback. The proportional overflow valve comprises a valve body, a cone valve core, a valve seat and an electromagnet. The cone valve core, the valve seat, an oil inlet and an oil outlet are arranged in the valve body. The cone valve core and the valve seat are matched with each other. A pushing rod is arranged in the middle of the electromagnet. One end of the pushing rod and the cone valve core carry out reciprocating motion through an elastic part. The valve seat is provided with a double-angle cone hole. The angle between the cone valve core and the valve seat is in a double-angle cone hole structure after being optimized according to pressure level and hydraulic power computing, compared with a conventional straight-hole sharp-angle structure, stable hydraulic power is obtained on the working condition of high-pressure overflow, and accordingly pressure is stable, accuracy is high, and noise is greatly lowered. Due to the fact that the angle of the valve seat is almost the same with the angle of the cone valve core, compared with the straight-hole sharp-angle structure, the design can greatly lower impact on the surface of the valve core of high-pressure jump, and accordingly service life is prolonged.
Description
Technical field
The utility model relates to a kind of relief valve, and especially a kind of proportional pressure control valve with position feedback is used for highi degree of accuracy, high response, and the pilot pressure of low noise is controlled.
Background technique
Proportional pressure control valve can carry out continuous control to the hydraulic pressure parameter, and a Proportional valve can obtain a plurality of settings of continuous variable, and can control the transient process between each setting.The initial stage of proportional control valve development is only proportion electro-magnet to be replaced switching mode electromagnet or the regulating handle of common hydrovalve, and this proportional pressure control valve work bandwidth is little, and the stagnant ring of stable state is large.Begin to adopt various feedback principles the beginning of the nineties in proportional pressure control valve, high pressure resistant, proportion electro-magnet and proportional amplifier technology reach its maturity.The stagnant ring of the stable state of valve is reduced to 3% left and right.After the nineties, the design principle of Proportional valve is further perfect, has adopted the means such as pressure, flow, displacement internal feedback and electricity correction, and stable state accuracy, dynamic response and the stability of valve all are further improved, and becomes a direction of hydraulic control.Wherein pilot-operated proportional relief valve mostly adopts poppet valve core and straight hole valve seat construction to come build-up pressure, the angle design of poppet valve core and valve seat can directly affect the performance of valve, single straight hole valve seat can produce larger noise (uttering long and high-pitched sounds) under high-pressure situations, and pressure stability and all can being affected working life.
The model utility content
In view of this, the technical problems to be solved in the utility model is to provide a kind of band position feedback proportional pressure control valve, is used for highi degree of accuracy, high response, and the pilot pressure of low noise is controlled.
For solving the problems of the technologies described above, the technical solution of the utility model is achieved in that a kind of proportional pressure control valve with position feedback, comprises valve body, poppet valve core, valve seat, electromagnet; Be provided with the poppet valve core that cooperatively interacts, valve seat in valve body and into and out of hydraulic fluid port, be provided with push rod at the electromagnet middle part, an end of push rod is by to-and-fro motion between elastic member and poppet valve core, and described valve seat has two angle taper holes.
Further, the other end of described push rod is connected with displacement transducer and proportional amplifier.
Further, described elastic member is spring.
Further, described conical valve base is connected with the adjusting screw of regulating minimum cracking pressure.
The technique effect that the utility model reaches is as follows:
1, the angle of poppet valve core and conical valve base according to pressure rating and hydraulic power calculation optimization after, (α 1 to adopt two angle taper holes, α 2) structure, the more conventional straight hole wedge angle of this structure love is compared and can obtain more stable hydraulic power under the working condition of high pressurized overflow, thereby make pressure more stable, precision is higher, and noise significantly reduces.Because angle angle of valve seat α 1 is more approaching with the poppet valve core angle [alpha], this design can reduce the high pressure sudden change to the impact force of spool face greatly than the straight hole wedge angle, thereby improves working life.
2, adopt high-power closed loop proportional electromagnet with the Displacement Feedback device, push rod (armature) position is detected by displacement transducer, input signal and feedback signal in proportional amplifier relatively, the continuous position of regulating pushing rod, thereby movement accurate position.Its dynamic characteristic is greatly improved, and can reach stagnant ring and repeatability and can replace servovalve for closed-loop system less than 0.3% high steady state controling precision.
3, this structure of relief valve is compact simple, thereby price is lower than servovalve; Controlling unit is few, thereby reliable operation, and precision is high, to medium without harsh requirement.
Description of drawings
Fig. 1 is the sectional structure chart of proportional pressure control valve of the present invention;
Fig. 2 is the partial enlarged drawing of Fig. 1.
Label declaration is as follows:
1 adjusting screw; 2 valve bodies; 3 valve seats; 4 poppet valve cores;
5 springs; 6 spring seats; 7 push rods; 8 electromagnet;
9 displacement transducers; 10 proportional amplifiers.
Embodiment
By reference to the accompanying drawings to being described further in the present invention.
As shown in Figure 1, be the utility model proportional pressure control valve, comprise valve body 2, poppet valve core 4, valve seat 3, electromagnet 8; Be provided with the poppet valve core 4 that cooperatively interacts, valve seat 3 in valve body 2 and into and out of hydraulic fluid port, be provided with push rod 7 at electromagnet 8 middle parts, an end of push rod 7 is by to-and-fro motion between elastic member and poppet valve core 4, and valve seat 3 has two angle taper holes.In the present embodiment, elastic member is spring.
The Remote control valve of conical valve seat 4 (pilot valve) is used for restriction system pressure.Pilot pressure oil enters by the P chamber filler opening of valve body 2, and when pressure equaled to act on power on valve seat 3 greater than poppet valve core 4, poppet valve core 4 was opened, and pressure oil returns into fuel tank through valve body T chamber oil outlet, the pressure limit in P this moment chamber the pressure of main valve or system.When electromagnet 8 not when electric, the thrust that acts on poppet valve core 4 equals spring.Overcome the after-applied pretightening force of Returnning spring 5, this power can make system obtain a stable minimum cracking pressure, but regulates minimum cracking pressure by the axial position of adjusting screw 1 cone governor valve seat 3.The other end of push rod 7 is connected with displacement transducer 9 and proportional amplifier 10.When proportion electro-magnet 8 gets electric (electrical signal passing ratio amplifier 10 input electromagnet 8), push rod 7 (armature) is subjected to displacement according to displacement transducer 9 signal magnitude, promote spring seat 6 and come Compress Spring 5, the power that poppet valve core 4 is acted on valve seat 3 obtains continuously accurate control.
The above is only preferred embodiment of the present utility model, is not be used to limiting protection domain of the present utility model.
Claims (4)
1. the proportional pressure control valve with position feedback, comprise valve body, poppet valve core, valve seat, electromagnet; Be provided with the poppet valve core that cooperatively interacts, valve seat in valve body and into and out of hydraulic fluid port, be provided with push rod at the electromagnet middle part, an end of push rod is characterized in that by to-and-fro motion between elastic member and poppet valve core, and described valve seat has two angle taper holes.
2. the proportional pressure control valve with position feedback as claimed in claim 1, is characterized in that, the other end of described push rod is connected with displacement transducer and proportional amplifier.
3. the proportional pressure control valve with position feedback as claimed in claim 1, is characterized in that, described elastic member is spring.
4. the proportional pressure control valve with position feedback as claimed in claim 1, is characterized in that, described conical valve base is connected with the adjusting screw of regulating minimum cracking pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320059832 CN202971383U (en) | 2013-02-04 | 2013-02-04 | Proportional overflow valve with position feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320059832 CN202971383U (en) | 2013-02-04 | 2013-02-04 | Proportional overflow valve with position feedback |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971383U true CN202971383U (en) | 2013-06-05 |
Family
ID=48512467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320059832 Expired - Lifetime CN202971383U (en) | 2013-02-04 | 2013-02-04 | Proportional overflow valve with position feedback |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971383U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654437A (en) * | 2017-11-23 | 2018-02-02 | 王雅莲 | A kind of adjustable overflow valve calibrated automatically |
| CN107687526A (en) * | 2017-11-23 | 2018-02-13 | 王雅莲 | A kind of overflow valve calibrated automatically |
| CN107991069A (en) * | 2016-10-27 | 2018-05-04 | 北京精密机电控制设备研究所 | A kind of high temperature high pressure device overflow valve main valve plug vibration measurement device |
| CN108331793A (en) * | 2018-02-07 | 2018-07-27 | 安徽工程大学 | A kind of hydraulic shunting system of circuit control pressure proportional |
| CN115095572A (en) * | 2022-07-21 | 2022-09-23 | 湖南十开科技有限公司 | Double-acting electro-hydraulic proportional push rod and electro-hydraulic proportional multi-way valve |
-
2013
- 2013-02-04 CN CN 201320059832 patent/CN202971383U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991069A (en) * | 2016-10-27 | 2018-05-04 | 北京精密机电控制设备研究所 | A kind of high temperature high pressure device overflow valve main valve plug vibration measurement device |
| CN107991069B (en) * | 2016-10-27 | 2020-10-23 | 北京精密机电控制设备研究所 | High temperature high pressure device overflow valve main valve core vibration measuring device |
| CN107654437A (en) * | 2017-11-23 | 2018-02-02 | 王雅莲 | A kind of adjustable overflow valve calibrated automatically |
| CN107687526A (en) * | 2017-11-23 | 2018-02-13 | 王雅莲 | A kind of overflow valve calibrated automatically |
| CN108331793A (en) * | 2018-02-07 | 2018-07-27 | 安徽工程大学 | A kind of hydraulic shunting system of circuit control pressure proportional |
| CN115095572A (en) * | 2022-07-21 | 2022-09-23 | 湖南十开科技有限公司 | Double-acting electro-hydraulic proportional push rod and electro-hydraulic proportional multi-way valve |
| CN115095572B (en) * | 2022-07-21 | 2024-05-28 | 湖南十开科技有限公司 | Double-acting electro-hydraulic proportional push rod and electro-hydraulic proportional multi-way 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: 20180207 Address after: Ju Guang Yuan Yue Le Xi Jie Lucheng District of Wenzhou City, Zhejiang Province, No. 156 325000 Patentee after: WENZHOU HIGH-TECH POWER CO.,LTD. Address before: No. 156, Yue Xi Street, Lucheng District, Lucheng District, Wenzhou, Zhejiang Patentee before: HIGH-TECH FLUID POWER Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325000, No. 156, Yue Xi Street, torch garden, Lucheng District, Zhejiang, Wenzhou Patentee after: Heitek Power Co.,Ltd. Address before: 325000, No. 156, Yue Xi Street, torch garden, Lucheng District, Zhejiang, Wenzhou Patentee before: WENZHOU HIGH-TECH POWER Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |