CN200978966Y - Flow proportion pilot valve for fluid - Google Patents
Flow proportion pilot valve for fluid Download PDFInfo
- Publication number
- CN200978966Y CN200978966Y CN 200620109181 CN200620109181U CN200978966Y CN 200978966 Y CN200978966 Y CN 200978966Y CN 200620109181 CN200620109181 CN 200620109181 CN 200620109181 U CN200620109181 U CN 200620109181U CN 200978966 Y CN200978966 Y CN 200978966Y
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- CN
- China
- Prior art keywords
- iron core
- pilot valve
- moving iron
- moving
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Magnetically Actuated Valves (AREA)
Abstract
The flow proportion pilot valve for fluid belongs to the technical field of fluid automatic control, and mainly comprises a sleeve (15) with a static iron core (17) at the upper part, a coil (14) arranged outside the sleeve (15), a movable iron core (3) arranged in the sleeve (15) and provided with a magnetic isolation head (2) and a valve port gasket (6) at the upper part and the lower part respectively, two annular grooves are arranged on the outer diameter cylindrical surface of the movable iron core (3), two guide sleeves (4) are correspondingly embedded, an axial balance small hole (16) is also arranged in the middle of the movable iron core (3), and a radial balance small hole (5) is arranged at the lower part. The utility model relates to a rationally, through setting up special uide bushing on moving the iron core external diameter face of cylinder, reduced frictional resistance, simultaneously through setting up axial balance aperture and radial balance aperture in the centre and the lower part of moving the iron core, make it form upper and lower end dynamic pressure difference balanced passageway in moving the iron core, can make the iron core during operation upper and lower pressure equal, improved the sensitivity and the reaction rate of pilot valve.
Description
Technical field
The utility model relates to a kind of fluid flow proportional pilot valve, belongs to the technical field of automatic control of fluid.
Background technique
Flow proportion valve is a kind ofly to obtain the electromagnetic flow valve of stepless output fluid flow by varying in size of input line solenoid valve loop current.Guide's mode of existing flow proportion valve mainly contains two kinds: a kind of is the ac power supply pilot valve, and a kind of is the DC electrical source pilot valve, and its basic structure is by compositions such as static iron core, sleeve pipe, moving iron core, balance springs.The ac power supply pilot valve produces a magnetic force by to the coil input ac voltage in coil, the balance spring in this magnetic force compression or the stretching pilot valve drives iron core and moves up or down, thereby opens pilot valve.But because the electric current of ac power supply is an alternation, in the alternation process of electric current, flashy dead electricity process is arranged, it is zero that the dead electricity process of this moment causes magnetic force.So need short-circuited conducting sleeve to be set, produces a remanent magnetism, to solve the problem that iron core can not adhesive of moving in pilot valve inside.The structure of this pilot valve is comparatively complicated, and manufacture difficulty is bigger, and noise is also bigger.
The method of work of DC electrical source pilot valve and principle and last a kind of identical, because what coil fed is DC electrical source, so there is not the alternation problem of electric current, so in pilot valve, do not need short-circuited conducting sleeve, and this valve is that direct current is constant, noiseless during work, but because moving iron core directly is contained in the sleeve pipe, contacting between moving iron core and the sleeve pipe is the face contact, and surface friction drag is bigger.Gap between the sound iron core is difficult to control, excesssive gap, and magnetic force reduces, and the gap is too small, and the resistance to motion of moving iron core increases, so manufacturing has been increased certain degree of difficulty.On the other hand, the present pilot valve that uses, lower channel on the pressure fluid that does not have design specialized on the moving iron core, generally realize, like this in moving iron core moves up and down process, because the gap between sleeve pipe and the moving iron core is very little by the gap between moving iron core and the sleeve pipe, it is poor to form a dynamic pressure between the upper and lower end of moving iron core, this dynamic pressure difference is opposite with the moving direction of moving iron core, promptly hinders the motion of moving iron core, has reduced the sensitivity and the reaction velocity of moving iron core.
Summary of the invention
The purpose of this utility model provides a kind of reasonable in design, and compact structure can effectively reduce resistance to motion, improves the fluid flow proportional pilot valve of sensitivity and reaction velocity.
The utility model is a fluid flow proportional pilot valve, the sleeve pipe that comprises top band static iron core, place the outer coil of sleeve pipe, place the moving iron core of sleeve pipe inner bottom part band valve port pad, it is characterized in that offering two circular grooves on the external diameter cylndrical surface of moving iron core, corresponding two guide sleeves that are embedded with, the centre of moving iron core also offers the longitudinal balance aperture, and the bottom offers the radial equilibrium aperture.
The upper end of described moving iron core also can be provided with every magnetic head, be convenient between moving iron core and the static iron core every magnetic.
The utility model is reasonable in design, by on moving iron core external diameter cylndrical surface, special-purpose guide sleeve being set, reduced frictional resistance, simultaneously owing to reduced area of contact, as long as the machining accuracy of control sleeve pipe and guide sleeve contact position just can reach performance requirement, reduced difficulty of processing, enhanced productivity.In addition, by centre and bottom longitudinal balance aperture and radial equilibrium aperture are set at moving iron core, make it in moving iron core, to form upper and lower end dynamic pressure difference balance channel, going up downforce in the time of can making iron core work equates, eliminated because the kinetic damping that moving iron core forms owing to the dynamic pressure difference of upper and lower end in the process of moving up and down, improved sensitivity and the reaction velocity of pilot valve.
Description of drawings
Accompanying drawing is an overall structure sectional view of the present utility model.
Among the figure, 1 is the cavity between moving iron core and the static iron core, and 2 is every magnetic head, 3 are moving iron core, and 4 is guide sleeve, and 5 is the radial equilibrium aperture, 6 is the valve port pad, and 7 is valve nozzle, and 8 is flow pass, 9 is flow channel, and 10 is upper chamber cover, and 11 is balance spring, 12 is screw, and 13 is coupling nut, and 14 is coil, 15 is sleeve pipe, and 16 is the longitudinal balance aperture, and 17 is static iron core.
Embodiment
The utility model is mainly by the sleeve pipe 15 of top band static iron core 17, place the coil 14 outside the sleeve pipe 15, place in the sleeve pipe 15 up and down respectively with formations such as moving iron core 3 every magnetic head 2 and valve port pad 6, offer two circular grooves on the external diameter cylndrical surface of moving iron core 3, corresponding two guide sleeves 4 that are embedded with, the centre of moving iron core 3 also offers longitudinal balance aperture 16, and the bottom offers radial equilibrium aperture 5.
During assembling, the utility model is placed the top of solenoid valve, the bottom is connected and fixed by screw 12 and coupling nut 13 and upper chamber cover 10 on the solenoid valve, between the bottom of moving iron core 3 and the coupling nut 13 balance spring 11 is housed.
During work, during coil 14 no electric circuits, under the effect of balance spring 11 elastic force, valve port pad 6 is close on the valve port B of valve nozzle 7, and valve port B is closed, and the passage that be made up of upper chamber cover 10 and valve nozzle this moment is cut off, and the pressure of flow channel 9 is greater than flow pass 8.Make the flow channel sealing form static pressure.When coil 14 feeds DC electrical source, coil 14 produces magnetic force, magnetic force compression balance spring 11, drive moving iron core 3 and valve port pad 6 and move upward, open poppet port B, at this moment, cavity 1 volume between moving iron core 3 and the static iron core 17 reduces, gas in the cavity 1 is discharged to flow pass 8 by longitudinal balance aperture 16 and radial equilibrium aperture 5, thereby has avoided gas in the cavity 1 to be difficult to discharge and the dynamic pressure that produces is poor, and it is equal to go up downforce when making iron core work.
Poppet port B opens back flow channel 9 and communicates with flow pass 8, and fluid flows out rapidly to flow pass 8 by flow channel 9 and valve port B.Because the magnetic force that coil 14 produces is directly proportional with the electric current of feeding, promptly electric current hour magnetic force is less.The displacement of this magnetic force compression balance spring 11 is also less, and the aperture of valve port B is corresponding less.Finally cause the diaphragm upper and lower sides pressure reduction of solenoid valve less.Make the aperture of primary valve of solenoid valve less, output flow is less.Simultaneously, when coil 14 input currents increased, the displacement of magnetic force compression balance spring 11 increased, the corresponding increase of the aperture of valve port B, and the damping of valve port B reduces.Flow channel 9 outer crushings increase.The primary valve diaphragm upper and lower sides pressure reduction of solenoid valve is increased, and the aperture of primary valve increases, and the output flow of solenoid valve also increases.Because the electric current of coil 14 is stepless adjustable, so the aperture of valve port B also is stepless adjustable, can make solenoid valve realize stepless output.
Claims (2)
1, a kind of fluid flow proportional pilot valve, the sleeve pipe (15) that comprises top band static iron core (17), place the outer coil (14) of sleeve pipe (15), place the moving iron core (3) of sleeve pipe (15) inner bottom part band valve port pad (6), it is characterized in that offering two circular grooves on the external diameter cylndrical surface of moving iron core (3), corresponding two guide sleeves (4) that are embedded with, the centre of moving iron core (3) also offers longitudinal balance aperture (16), and the bottom offers radial equilibrium aperture (5).
2, by the described fluid of claim 1 flow proportional pilot valve, it is characterized in that the upper end of described moving iron core (3) also is provided with every magnetic head (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620109181 CN200978966Y (en) | 2006-10-31 | 2006-10-31 | Flow proportion pilot valve for fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620109181 CN200978966Y (en) | 2006-10-31 | 2006-10-31 | Flow proportion pilot valve for fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200978966Y true CN200978966Y (en) | 2007-11-21 |
Family
ID=38979343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620109181 Expired - Fee Related CN200978966Y (en) | 2006-10-31 | 2006-10-31 | Flow proportion pilot valve for fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200978966Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102356260A (en) * | 2009-02-11 | 2012-02-15 | 佩特拉电气有限公司 | Valve arrangement |
| CN103244739A (en) * | 2012-02-03 | 2013-08-14 | 日立汽车系统株式会社 | Electromagnetic valve and fixing structure |
| CN103291515A (en) * | 2013-06-13 | 2013-09-11 | 无锡威孚汽车柴油系统有限公司 | Proportional flow valve for common-rail pump |
| CN107654435A (en) * | 2017-11-15 | 2018-02-02 | 宁波文泽机电技术开发有限公司 | A kind of proportional flow stop valve |
| CN109140027A (en) * | 2018-10-31 | 2019-01-04 | 常熟市吉宏汽车电子科技有限公司 | A kind of solenoid valve changing dynamic and static core structure |
| CN109973705A (en) * | 2017-12-27 | 2019-07-05 | 浙江三花汽车零部件有限公司 | Solenoid valve |
| CN112944014A (en) * | 2021-04-13 | 2021-06-11 | 格陆博科技有限公司 | Normally open solenoid valve |
| CN113048243A (en) * | 2021-02-22 | 2021-06-29 | 西安航天远征流体控制股份有限公司 | Valve body and step-by-step direct-acting electromagnetic valve |
| CN115405702A (en) * | 2020-05-07 | 2022-11-29 | 西安京兆电力科技有限公司 | Normally closed solenoid valve |
-
2006
- 2006-10-31 CN CN 200620109181 patent/CN200978966Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102356260B (en) * | 2009-02-11 | 2013-12-11 | wmf消费者电器有限公司 | Valve arrangement |
| CN102356260A (en) * | 2009-02-11 | 2012-02-15 | 佩特拉电气有限公司 | Valve arrangement |
| CN103244739A (en) * | 2012-02-03 | 2013-08-14 | 日立汽车系统株式会社 | Electromagnetic valve and fixing structure |
| CN103291515A (en) * | 2013-06-13 | 2013-09-11 | 无锡威孚汽车柴油系统有限公司 | Proportional flow valve for common-rail pump |
| CN103291515B (en) * | 2013-06-13 | 2015-03-25 | 无锡威孚汽车柴油系统有限公司 | Proportional flow valve for common-rail pump |
| CN107654435B (en) * | 2017-11-15 | 2019-07-12 | 济宁落陵春辉机械制造有限公司 | A kind of proportional flow shut-off valve |
| CN107654435A (en) * | 2017-11-15 | 2018-02-02 | 宁波文泽机电技术开发有限公司 | A kind of proportional flow stop valve |
| CN109973705B (en) * | 2017-12-27 | 2021-03-09 | 浙江三花汽车零部件有限公司 | Electromagnetic valve |
| CN109973705A (en) * | 2017-12-27 | 2019-07-05 | 浙江三花汽车零部件有限公司 | Solenoid valve |
| CN109140027A (en) * | 2018-10-31 | 2019-01-04 | 常熟市吉宏汽车电子科技有限公司 | A kind of solenoid valve changing dynamic and static core structure |
| CN115405702A (en) * | 2020-05-07 | 2022-11-29 | 西安京兆电力科技有限公司 | Normally closed solenoid valve |
| CN113048243A (en) * | 2021-02-22 | 2021-06-29 | 西安航天远征流体控制股份有限公司 | Valve body and step-by-step direct-acting electromagnetic valve |
| CN112944014A (en) * | 2021-04-13 | 2021-06-11 | 格陆博科技有限公司 | Normally open solenoid valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |