CN204267258U - A kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect - Google Patents
A kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect Download PDFInfo
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- CN204267258U CN204267258U CN201420724065.6U CN201420724065U CN204267258U CN 204267258 U CN204267258 U CN 204267258U CN 201420724065 U CN201420724065 U CN 201420724065U CN 204267258 U CN204267258 U CN 204267258U
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Abstract
The utility model relates to a kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect.This device is made up of the pump housing, screw, piston, housing, magnetic flow liquid, piston rod, electromagnetic coil, piezo-electric sheet.When after electromagnetic coil energising, magnetic flow liquid becomes the Bingham fluid of high viscosity, lazy flow instantaneously from original New ton fluid, piston is made to be fixed on position as shown in the figure, the electric current in electromagnetic coil is regulated to regulate the yield force of magnetic flow liquid, thus control the working pressure of piezoelectric pump, when due to external environment change and be carried in piezo-electric sheet two ends voltage disturbance caused by the change of piezoelectric pump pressure time, by the back and forth movement of piston, the working pressure of piezoelectric pump is made to keep a stable state.This device by changing the size of electric current in electromagnetic coil, thus can change the magnetic intensity around magnetic flow liquid, realizes, to the electrodeless adjustment of piezoelectric pump pressure, reaching the requirement worked under meeting varying environment.
Description
Technical field
The utility model relates to a kind of piezoelectric pump overvoltage protective device, especially relates to a kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect.
Background technique
Along with Chinese scholars is constantly goed deep into the research of piezoelectric material, the application of this intellectual material of piezoelectricity is more and more extensive.Wherein, piezoelectric pump is an important branch of piezoelectric actuator, simple with its structure, volume is little, reaction is fast, without electromagnetic interference, be easy to operation, the feature such as flow rate pressure controllability is good, supply at the fuel of Aero-Space, motor car engine, fuel cell, microcomputer electrohydraulic system, intelligent robot, medical treatment, have uniqueness application prospect widely in chemical analysis etc.Piezoelectric pump, from not additional drives motor when, utilizes the inverse piezoelectric effect of piezoelectric material to make piezoelectric vibrator indirect current produce distortion, thus makes the volume of pump chamber change to control the output of fluid.But when piezoelectric pump is operated in some occasions, require that piezoelectric pump has higher pressure and flow, its common way improves operating voltage for cost, thus cause the pressure transient of piezoelectric pump inside, reduces the reliability of piezoelectric pump work.In addition, due to external environment change and be carried in piezo-electric sheet two ends voltage disturbance caused by the change of piezoelectric pump pressure, all can cause the reduction of piezoelectric pump operating accuracy.In fact, as on 06 01st, 2012 authorizes as described in the Chinese patent No.201220261298.8 of the people such as Kan Junwu, plunger type piezoelectric pump based on the tandem drive of many oscillators adopts the method construct piezoelectric pump of multiple alms bowl type piezoelectric vibrator tandem drive piston, although improve pressure stability when piezoelectric pump works under hyperbaric environment, its application in Practical Project of the defective effects such as its complex structure, cost are higher, volume is larger.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect with features such as structure are simple, cost is low, volume is little.This device can control the working pressure of piezoelectric pump by the size changing solenoid current.
In order to effectively realize piezoelectric pump function as above, the utility model mainly by direct integrated a kind of voltage stabilizer based on magnetic rheology effect on piezoelectric pump, reaches the electrodeless control to pressure.Concrete scheme is as follows: a kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect, and this device is by the pump housing, screw, piston, housing, magnetic flow liquid, piston rod, electromagnetic coil, and piezo-electric sheet forms.The upper-end surface of the described pump housing cuts out two cylinder tables: one be large end face outside the pump housing, small end face towards inside the pump housing piezoelectric pump outlet, one be large end face inside the pump housing, small end face is towards the piezoelectric pump import outside the pump housing.The described pump housing is connected with housing by screw, and the both ends horizontal of piezo-electric sheet is embedded in the pump housing and housing upper face, and is arranged on the chamber be made up of the pump housing and housing.Described housing has twice passage, and piston rod has two grooves, and electromagnetic coil is inside groove, and the inner side of piston and housing forms a movable sealing chamber, and magnetic flow liquid is filled in inside this sealed chamber.The material of the pump housing is aluminium, and the material of housing, piston rod is pure iron, and the material of piston is rubber.The model that magnetic flow liquid adopts Lord company of the U.S. to develop is the magnetic flow liquid of MRF-132LD.
The good effect of a kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect described in the utility model is: at existing pressure pump without on the basis of pressure regulator; be integrated with a kind of voltage stabilizer based on magnetic rheology effect; by regulating solenoid current size, thus the viscosity that the magnetic intensity changed around magnetic flow liquid changes magnetic flow liquid reaches the electrodeless control to piezoelectric pump pressure.Due to magnetic flow liquid speed of response quickly (millisecond magnitude), and there is reversible special nature, make the corresponding speed of whole device quickly.In addition, whole device has the features such as structure is simple, cost is low, volume is little.
Accompanying drawing explanation
Fig. 1 is a kind of piezoelectric pump overvoltage protective device structural principle schematic diagram based on magnetic rheology effect of the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
In the drawings, a kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect of the utility model forms by by the pump housing 1, screw 2, piston 3, housing 5, magnetic flow liquid 6, piston rod 7, electromagnetic coil 8, piezo-electric sheet 101.
In whole device, as shown in the figure: the upper-end surface of the pump housing 1 cuts out two cylinder tables: one is that large end face is outside the pump housing, small end face towards inside the pump housing piezoelectric pump outlet 711, one be large end face inside the pump housing, small end face is towards the piezoelectric pump import 722 outside the pump housing.The pump housing 1 is connected with housing 5 by screw 2, and the both ends horizontal of piezo-electric sheet 101 is embedded in above the pump housing 1 and housing 5, and is arranged on the chamber be made up of the pump housing 1 and housing 5.Housing 5 has twice passage 4, for when piezoelectric pump overvoltage, air-flow is flowed out by this passage, thus play the release effect of piezoelectric pump, piston rod 7 has two grooves, electromagnetic coil 8 is inside groove, and piston 3 forms a movable sealing chamber with the inner side of housing 5, and magnetic flow liquid 6 is filled in inside this sealed chamber.The material of the pump housing 1 is aluminium, and the material of housing 5, piston rod 7 is pure iron, and the material of piston 3 is rubber.The model that magnetic flow liquid 6 adopts Lord company of the U.S. to develop is the magnetic flow liquid of MRF-132LD.
As shown in the figure, whole device can be found out at existing pressure pump without on the basis of pressure regulator, be integrated with a kind of voltage stabilizer based on magnetic rheology effect, by regulating electromagnetic coil 8 size of current, thus the viscosity that the magnetic intensity changed around magnetic flow liquid 6 changes magnetic flow liquid 6 reaches the electrodeless control to piezoelectric pump pressure.And due to magnetic flow liquid 6 speed of response quickly (millisecond magnitude), and there is reversible special nature, make the corresponding speed of whole device quickly.In addition, whole device has the features such as structure is simple, cost is low, volume is little.
First, regulate the size of electromagnetic coil 8 electric current that the working pressure of piezoelectric pump is set.When piezo-electric sheet 101 connects alternating voltage, due to the inverse piezoelectric effect of piezo-electric sheet, make piezo-electric sheet 101 constantly do back and forth movement between position 102 and position 103, finally make flow flow to from hole 722, flow out from hole 711.When piezoelectric pump be operated in require there is the occasion of higher pressure and flow time, or due to external environment change and be carried in piezo-electric sheet 101 two ends voltage disturbance caused by the change of piezoelectric pump pressure time: when the working pressure of piezoelectric pump inside is higher than settings, promote piston 3 to move to away from pump chamber direction, until flow flows out from passage 4, working pressure is finally made to be stabilized in the working pressure of set piezoelectric pump; When the working pressure of piezoelectric pump inside is lower than settings, pulls piston 3 near the motion of pump chamber direction, finally make pressure stability in the working pressure of set piezoelectric pump.
Claims (3)
1., based on a piezoelectric pump overvoltage protective device for magnetic rheology effect, this device is made up of the pump housing, screw, piston, housing, magnetic flow liquid, piston rod, electromagnetic coil, piezo-electric sheet; It is characterized in that: the upper-end surface of the described pump housing (1) cuts out two cylinder tables: one is that large end face is outside the pump housing, small end face is towards piezoelectric pump outlet (711) inside the pump housing, one be large end face inside the pump housing, small end face is towards the piezoelectric pump import (722) outside the pump housing; The described pump housing (1) is connected with housing (5) by screw (2), the both ends horizontal of piezo-electric sheet (101) is embedded in above the pump housing (1) and housing (5), and is arranged on the chamber be made up of the pump housing (1) and housing (5); Described housing (5) has twice passage (4); Described piston rod (7) has two grooves, and electromagnetic coil (8) is inside groove; Described piston (3) forms a movable sealing chamber with the inner side of housing (5), and magnetic flow liquid (6) is filled in inside this sealed chamber.
2. a kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect as claimed in claim 1, is characterized in that: the material of the pump housing (1) is aluminium; The material of housing (5), piston rod (7) is pure iron; The material of piston (3) is rubber.
3. a kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect as claimed in claim 1, is characterized in that: the model that magnetic flow liquid (6) adopts Lord company of the U.S. to develop is the magnetic flow liquid of MRF-132LD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420724065.6U CN204267258U (en) | 2014-11-23 | 2014-11-23 | A kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420724065.6U CN204267258U (en) | 2014-11-23 | 2014-11-23 | A kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect |
Publications (1)
| Publication Number | Publication Date |
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| CN204267258U true CN204267258U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420724065.6U Expired - Fee Related CN204267258U (en) | 2014-11-23 | 2014-11-23 | A kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107170722A (en) * | 2017-05-25 | 2017-09-15 | 东莞合安机电有限公司 | A kind of bimodulus piezoelectricity radiator structure |
| CN107197608A (en) * | 2017-05-25 | 2017-09-22 | 东莞合安机电有限公司 | Four direction piezoelectricity heat radiation modules |
| CN109393860A (en) * | 2018-09-11 | 2019-03-01 | 刘兴海 | One kind is anti-to knock exhibition platform for artwork over |
| CN111237174A (en) * | 2020-01-08 | 2020-06-05 | 安徽建筑大学 | Active power assembly and driving device with same |
| CN113007076A (en) * | 2021-02-23 | 2021-06-22 | 北京化工大学 | Electromagnetic diaphragm metering pump based on magnetorheological elastomer |
| CN114060255A (en) * | 2021-11-18 | 2022-02-18 | 福州大学 | Magnetorheological fluid micropump driven by gradient magnetic field |
-
2014
- 2014-11-23 CN CN201420724065.6U patent/CN204267258U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107170722A (en) * | 2017-05-25 | 2017-09-15 | 东莞合安机电有限公司 | A kind of bimodulus piezoelectricity radiator structure |
| CN107197608A (en) * | 2017-05-25 | 2017-09-22 | 东莞合安机电有限公司 | Four direction piezoelectricity heat radiation modules |
| CN107197608B (en) * | 2017-05-25 | 2019-06-25 | 昆山江鸿精密电子有限公司 | Four direction piezoelectricity heat radiation modules |
| CN109393860A (en) * | 2018-09-11 | 2019-03-01 | 刘兴海 | One kind is anti-to knock exhibition platform for artwork over |
| CN111237174A (en) * | 2020-01-08 | 2020-06-05 | 安徽建筑大学 | Active power assembly and driving device with same |
| CN113007076A (en) * | 2021-02-23 | 2021-06-22 | 北京化工大学 | Electromagnetic diaphragm metering pump based on magnetorheological elastomer |
| CN114060255A (en) * | 2021-11-18 | 2022-02-18 | 福州大学 | Magnetorheological fluid micropump driven by gradient magnetic field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20151123 |