CN202302220U - High-precision pneumatic proportional pressure valve - Google Patents
High-precision pneumatic proportional pressure valve Download PDFInfo
- Publication number
- CN202302220U CN202302220U CN2011203580710U CN201120358071U CN202302220U CN 202302220 U CN202302220 U CN 202302220U CN 2011203580710 U CN2011203580710 U CN 2011203580710U CN 201120358071 U CN201120358071 U CN 201120358071U CN 202302220 U CN202302220 U CN 202302220U
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- control chamber
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Abstract
The utility model relates to the technical field of proportional pressure valves, in particular to a high-precision pneumatic proportional pressure valve, which comprises a valve body and a proportional electromagnet arranged on the valve body. The inner wall of the valve body is lined on a valve pocket; the valve pocket is provided with a cavity in a molding way; a valve core is arranged in the valve pocket; the valve core divides the cavity into an air exhausting cavity and a control cavity; the side wall of the valve body is provided with an air exhausting opening, an air inlet and an air outlet in sequence from top to bottom; the air exhausting opening is communicated with the air exhausting cavity; the air outlet is communicated with the control cavity; the air inlet and the control cavity are opened and closed through the valve core; a through hole is formed in the valve core; the air exhausting cavity is communicated with the control cavity by the through hole; an air hole is formed in the air outlet; the air hole is provided with a pressure sensor; and the pressure sensor is connected in series with a controller, a digital proportional amplifier and the proportional electromagnet in sequence through a conducting wire. The high-precision pneumatic proportional pressure valve has the characteristics of reasonable structure, reasonableness in arrangement, strong control stability, high control precision, and the like.
Description
Technical field
The utility model relates to the proportional pressure valve technical field, particularly a kind of highi degree of accuracy pneumatic proportional pressure valve.
Background technique
Proportional pressure valve is the core control unit of pneumatic servo control system, wherein adopts the pressure valve of proportion electro-magnet electricity feedback closed loop control, and simple in structure, speed of response is fast, is a kind of form the most frequently used in the present proportional pressure valve.Yet, this type of proportional pressure valve of developing both at home and abroad at present, its steady state pressure fluctuation is all greater than 3kPa, and frequency response far can not be satisfied the requirement of gas pressure highi degree of accuracy, quick control less than 5Hz.Therefore, further improve the control accuracy of Proportional valve and to take into account response characteristic be the important difficult problem that this field needs to be resolved hurrily.
Up to now, scientific research institution both domestic and external and engineers and technicians are engaged in the application study of various Proportional valves mostly, and common simple PID or the PI control algorithm of adopting of the controller of common pneumatic proportional pressure valve compensated error.Yet; For high-precision proportional pressure valve; The time variation of pneumatic system and factor such as non-linear make above-mentioned controller can not satisfy the control requirement under all expected values and load behavior simultaneously, and the research of the design of Comparative Examples pressure valve, test, parameter optimization criterion and practical control strategy still lacks a cover efficient ways.
At present, the pneumatic enterprise of China is also relatively backward aspect the design of proportional pressure valve and exploitation, therefore, needs a kind of highi degree of accuracy pneumatic proportional pressure valve of design research and development badly, when improving system responses and control stability, further improves steady state controling precision.
The model utility content
The purpose of the utility model is defective and the deficiency to existing technology, and the highi degree of accuracy pneumatic proportional pressure valve of the stable strong and steady state controling precision of a kind of simple and compact for structure, control is provided.
For realizing above-mentioned purpose, the utility model adopts following technological scheme:
The described a kind of highi degree of accuracy pneumatic proportional pressure valve of the utility model; It comprises valve body and is located at the proportion electro-magnet on the valve body, and said valve interior wall lining is located at valve pocket, and valve pocket forms cavity; Be provided with spool in the said valve pocket, spool is divided into exhaust cavity and control chamber with cavity; Be provided with upper valve core directly over the said spool, the upper valve core upper end is connected with proportion electro-magnet, and the upper valve core lower end surface is provided with sealing gasket, is provided with Returnning spring between said spool bottom and the control chamber bottom; Said body wall is provided with relief opening, suction port and air outlet from top to bottom successively; Said relief opening is communicated with exhaust cavity; Said air outlet is communicated with control chamber, through switching spool, is provided with through hole in the said spool between said suction port and the control chamber; Through hole is communicated with exhaust cavity and control chamber, the corresponding setting with sealing gasket of said through hole; Place, said air outlet is provided with pore, and pore is provided with pressure transducer, and pressure transducer is through lead be connected in series successively controller, numerical scale amplifier and proportion electro-magnet.
Further, said spool bottom is arranged with the electromagnet sleeve, and said sealing gasket is located at the electromagnet sleeve tube bottom.
Further, said spool bottom is arranged with valve cage, and said Returnning spring is located at valve cage and control chamber bottom.
After adopting said structure; The utility model beneficial effect is: place, the said air outlet of the utility model is provided with pore; Pore is provided with pressure transducer; Pressure transducer is through lead be connected in series successively controller, numerical scale amplifier and proportion electro-magnet, and through the precise and stable control gaseous flow of setting pressure, reaction velocity is fast.
Description of drawings
Fig. 1 is the sectional structure schematic representation of the utility model.
Among the figure:
1, valve body; 2, valve pocket; 3, sealing gasket; 5, upper valve core;
6, spool; 7, control chamber; 8, proportion electro-magnet; 9, electromagnet sleeve;
10, exhaust cavity; 11, valve cage; 12, Returnning spring; 13, pressure transducer;
14, controller; 15, numerical scale amplifier; A, suction port; B, relief opening;
C, air outlet.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, the described a kind of highi degree of accuracy pneumatic proportional pressure valve of the utility model, wall liner is located at valve pocket 2 in the said valve body 1, and valve body 1 is provided with seal ring with valve pocket 2, to increase tightness.Form cavity in the valve pocket 2, be provided with spool 6 in the said valve pocket 2, spool 6 is divided into exhaust cavity 10 and control chamber 7 with cavity, is provided with seal ring between spool 6 and valve pocket 2 inwalls, guarantees that there are not disappointing situation in exhaust cavity 10 and control chamber 7.
Said valve body 1 sidewall is provided with relief opening B, suction port A and air outlet C from top to bottom successively, and said relief opening B is communicated with exhaust cavity 10, and said air outlet C is communicated with control chamber 7, passes through spool 6 switches between said suction port A and the control chamber 7.
Said valve body 1 top is fixedly connected with proportion electro-magnet 8.
Be provided with upper valve core 5 directly over the said spool 6; Upper valve core 5 upper ends are connected with proportion electro-magnet 8; Upper valve core 5 lower ends are arranged with electromagnet sleeve 9, and electromagnet sleeve 9 bottom surfaces are provided with sealing gasket 3, are provided with through hole 16 in the said spool 6; Through hole 16 is communicated with exhaust cavity 10 and control chamber 7,3 one-tenth corresponding settings of said through hole 16 and sealing gasket.
Said spool 6 bottoms are arranged with valve cage 11, are provided with Returnning spring 12 between valve cage 11 and control chamber 7 bottoms, are beneficial to spool 6 and reset smoothly.
C place, said air outlet is provided with pore 17, and pore 17 is provided with pressure transducer 13, and pressure transducer 13 is through lead be connected in series successively controller 14, numerical scale amplifier 15 and proportion electro-magnet 8.
Working principle: when the utility model was not worked, spool 6 just in time was located at the position of suction port A; When needing to open the utility model, set a force value, at this moment, the pressure that pressure transducer 13 is sensed is little; Send the instruction that increases electric current through controller 14 and numerical scale amplifier 15 Comparative Examples electromagnet 8, electric current increases, and pressure transducer 13 promotes upper valve core 5 and moves downward, and moves to certain position; Sealing gasket 3 compresses through hole 16, and exhaust cavity 10 is in closed condition with control chamber 7, when upper valve core 5 further moves down; Promote spool 6, suction port A opens gradually, and gas gets into control chamber 7 after air outlet C discharges through suction port A; When the pressure of sensing when pressure transducer 13 equated with setup pressure value, current constant, upper valve core 5 were no longer fixed to moving down.The pressure that pressure transducer 13 is sensed sends the instruction that reduces electric current through controller 14 and numerical scale amplifier 15 Comparative Examples electromagnet 8 during greater than setting pressure, and electric current reduces; Pressure transducer 13 pulling upper valve cores 5 move upward, and sealing gasket 3 separates with through hole 16, and control chamber 7 is communicated with exhaust cavity 10; Portion gas via through holes 16 gets into exhaust cavity 10 in the control chamber 7; After relief opening is discharged, simultaneously, spool 6 moves under Returnning spring 12 effects; Turn down suction port A, finally reach the purpose that reduces air outlet C pressure.
The above only is the preferred embodiments of the utility model, so all equivalences of doing according to the described structure of the utility model patent claim, characteristic and principle change or modify, includes in the utility model patent claim.
Claims (3)
1. highi degree of accuracy pneumatic proportional pressure valve; It comprises valve body (1) and is located at the proportion electro-magnet (8) on the valve body (1); It is characterized in that: the interior wall liner of said valve body (1) is located at valve pocket (2); Valve pocket (2) forms cavity, is provided with spool (6) in the said valve pocket (2), and spool (6) is divided into exhaust cavity (10) and control chamber (7) with cavity; Be provided with upper valve core (5) directly over the said spool (6), upper valve core (5) upper end is connected with proportion electro-magnet (8), and upper valve core (5) lower end surface is provided with sealing gasket (3), is provided with Returnning spring (12) between said spool (6) bottom and control chamber (7) bottom; Said valve body (1) sidewall is provided with relief opening (B), suction port (A) and air outlet (C) from top to bottom successively; Said relief opening (B) is communicated with exhaust cavity (10); Said air outlet (C) is communicated with control chamber (7), through spool (6) switch, is provided with through hole (16) in the said spool (6) between said suction port (A) and the control chamber (7); Through hole (16) is communicated with exhaust cavity (10) and control chamber (7), said through hole (16) and the corresponding setting of sealing gasket (3); Pore (17) is located to be provided with in said air outlet (C), and pore (17) is provided with pressure transducer (13), and pressure transducer (13) is through lead be connected in series successively controller (14), numerical scale amplifier (15) and proportion electro-magnet (8).
2. highi degree of accuracy pneumatic proportional pressure valve according to claim 1 is characterized in that: said upper valve core (5) bottom is arranged with electromagnet sleeve (9), and said sealing gasket (3) is located at electromagnet sleeve (9) bottom.
3. highi degree of accuracy pneumatic proportional pressure valve according to claim 1 is characterized in that: said spool (6) bottom is arranged with valve cage (11), and said Returnning spring (12) is located at valve cage (11) and control chamber (7) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203580710U CN202302220U (en) | 2011-09-20 | 2011-09-20 | High-precision pneumatic proportional pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203580710U CN202302220U (en) | 2011-09-20 | 2011-09-20 | High-precision pneumatic proportional pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202302220U true CN202302220U (en) | 2012-07-04 |
Family
ID=46371115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203580710U Expired - Fee Related CN202302220U (en) | 2011-09-20 | 2011-09-20 | High-precision pneumatic proportional pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202302220U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047426A (en) * | 2013-01-11 | 2013-04-17 | 浙江大学台州研究院 | Pneumatic proportional pressure valve |
| CN103234061A (en) * | 2013-05-15 | 2013-08-07 | 湖州湖锻机电科技有限公司 | Pneumatic proportional valve with ceramic valve core |
| CN104085386A (en) * | 2014-07-07 | 2014-10-08 | 南京浦镇海泰制动设备有限公司 | Electro-pneumatic conversion proportional valve for rail transit vehicle braking system |
| CN104265981A (en) * | 2014-10-09 | 2015-01-07 | 平原机器厂（新乡） | Proportional flow control valve |
| CN108266562A (en) * | 2016-12-30 | 2018-07-10 | 华中科技大学 | A kind of high-pressure gas flow adjustable valve |
| CN109538349A (en) * | 2018-12-29 | 2019-03-29 | 汽解放汽车有限公司 | The air control unit and control method of valve |
| CN112460300A (en) * | 2020-11-24 | 2021-03-09 | 南京工程学院 | Gas proportional pressure reducing valve |
| CN114542764A (en) * | 2022-04-26 | 2022-05-27 | 宁波佳尔灵气动机械有限公司 | Proportional pressure valve with air supply switch |
-
2011
- 2011-09-20 CN CN2011203580710U patent/CN202302220U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047426A (en) * | 2013-01-11 | 2013-04-17 | 浙江大学台州研究院 | Pneumatic proportional pressure valve |
| CN103234061A (en) * | 2013-05-15 | 2013-08-07 | 湖州湖锻机电科技有限公司 | Pneumatic proportional valve with ceramic valve core |
| CN104085386A (en) * | 2014-07-07 | 2014-10-08 | 南京浦镇海泰制动设备有限公司 | Electro-pneumatic conversion proportional valve for rail transit vehicle braking system |
| CN104265981A (en) * | 2014-10-09 | 2015-01-07 | 平原机器厂（新乡） | Proportional flow control valve |
| CN108266562A (en) * | 2016-12-30 | 2018-07-10 | 华中科技大学 | A kind of high-pressure gas flow adjustable valve |
| CN108266562B (en) * | 2016-12-30 | 2019-04-12 | 华中科技大学 | A kind of high-pressure gas flow amount control device |
| CN109538349A (en) * | 2018-12-29 | 2019-03-29 | 汽解放汽车有限公司 | The air control unit and control method of valve |
| CN109538349B (en) * | 2018-12-29 | 2023-08-15 | 一汽解放汽车有限公司 | Pneumatic control device and control method for valve |
| CN112460300A (en) * | 2020-11-24 | 2021-03-09 | 南京工程学院 | Gas proportional pressure reducing valve |
| CN114542764A (en) * | 2022-04-26 | 2022-05-27 | 宁波佳尔灵气动机械有限公司 | Proportional pressure valve with air supply switch |
| CN114542764B (en) * | 2022-04-26 | 2022-08-05 | 宁波佳尔灵气动机械有限公司 | Proportional pressure valve with air supply switch |
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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: 20120704 Termination date: 20130920 |