CN200955493Y - Piezoelectric gear pump - Google Patents
Piezoelectric gear pump Download PDFInfo
- Publication number
- CN200955493Y CN200955493Y CN 200620023288 CN200620023288U CN200955493Y CN 200955493 Y CN200955493 Y CN 200955493Y CN 200620023288 CN200620023288 CN 200620023288 CN 200620023288 U CN200620023288 U CN 200620023288U CN 200955493 Y CN200955493 Y CN 200955493Y
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- CN
- China
- Prior art keywords
- drive
- stator
- piezoelectric ceramic
- gear
- ring
- 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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- 239000000919 ceramic Substances 0.000 claims abstract description 21
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000004044 response Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005288 electromagnetic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- Rotary Pumps (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model relates to a piezoelectric gear pump which belongs to the fluid mechanical field and mainly comprises a drive gear (1), a driven gear (2), a drive stator (13), a piezoelectric ceramic ring (14) and a friction ring (12); wherein the friction ring (12), the drive stator (13), and the piezoelectric ceramic ring (14) are successively arranged in a hollow cavity at the axial end of the drive gear (1) in the embedding way, while the piezoelectric ceramic ring (14) is connected with the drive stator (14), and the friction ring (12) is connected with the drive gear (1); and the drive stator (13) is connected with the friction ring (12) and in the tightly pressed state, while the outside of the piezoelectric ceramic ring is provided with a drive tank cap (16), and the drive stator (13) is also firmly connected with the drive tank cap (16), wherein the drive tank cap (16) is arranged on a pump body (5). The utility model has the advantages of small appearance, integrative capacity, fast response, and non electromagnetic wave disturbance.
Description
Technical field
The present invention relates to a kind of piezoelectricity type gear pump, belong to field of fluid machinery.
Background technique
Gear pump is hydraulic element commonly used in the Hydraulic Power Transmission System, structurally can be divided into external gear pump and crescent gear pump two big classes.Gear pump is widely used in numerous industrial fields such as machine tool industry, farm machinery, engineering machinery, Aero-Space and shipping industry as a kind of typical hydraulic element, and its main working parts is that driving gear and driven gear constitute.Gear pump structure is simple, at aspects such as original design, manufacturing process and manufacturing process incomparable superiority is arranged than vane pump and plunger pump.
Fig. 1～4 are conventional gears pump structure schematic representation.Traditional gear pump needs the peripheral hardware motor to drive when working usually, and motor and gear pump are separated like this, so complex structure, and it is bigger to take up room.In addition, conventional motors is utilized electromagnetic effect work, therefore adopts conventional motors as driving source, can produce magnetic field during work, and this will influence in medical treatment, Application for Field such as health.Along with the development of micro-electromechanical technology, electrical equipment miniaturization and microminiaturization have become a kind of research tendency.And the Applicable scope that intrinsic driving mode of conventional tooth wheel pump and working method have influenced it to a certain extent and the further miniaturization of volume.
Summary of the invention
The objective of the invention is to overcome the above-mentioned defective of conventional tooth wheel pump, a kind of gear pump that utilizes ultrasound-driven is provided, this design becomes one the drive unit and the pump housing, has that volume is little, response soon, does not produce advantage such as electromagnetic interference.
To achieve these goals, with the external gear pump is example, the technical solution used in the present invention is: this device mainly includes driving gear 1, driven gear 2, drives stator 13, piezoelectric ceramic ring 14, friction ring 12, friction ring 12, drives in the embedded successively from inside to outside cavity that is placed on driving gear 1 axle head of stator 13, piezoelectric ceramic ring 14.Wherein, piezoelectric ceramic ring 14 is fixed as one with driving stator 13, friction ring 12 is fixed as one with driving gear 1, driving stator 13 contacts with friction ring 12 and is in impaction state, arranged outside at piezoelectric ceramic ring has the case lid 16 of driving, drive stator 13 and fixedly connected, drive case lid 16 and be fixed on the pump housing 5 with driving case lid 16.Driving stator 13 rotates by the frictional force drive driving gear 1 that friction ring 12 produces.
The present invention is applicable to external gear pump and crescent gear pump.
Piezoelectricity type gear pump driven principle of the present invention is: the inverse piezoelectric effect of utilizing piezoelectric ceramic ring 14, the voltage signal of characteristic frequency is applied on the piezoelectric ceramic ring 14, the stretching and the compressive strain that alternately take place on the piezoelectric ceramic ring 14 form capable ripple, row ripple direction is shown among Fig. 6 17, and the capable ripple of generation brings out and drives stator 13 generation distortion.This moment at the movement locus that drives stator 13 lip-deep each particle shown among Fig. 7 oval 18.The tangential velocity of these oval 18 movement locus promotes friction ring 12 edges and the opposite direction transmission of row direction of wave travel by rubbing action, shown among Fig. 7 19 just.Because fixedlying connected between friction ring 12 and the driving gear 1, when friction ring 12 rotated, driving gear 1 also rotated in the same way, thus the function of realization gear pump.This driving mode can not produce magnetic field in the course of the work, does not have electromagnetic pollution when therefore working.
The utlity model has miniaturization, integrated advantage; And, can realize that flow controls relatively accurately because piezoelectric constant response is fast; Interference does not generate electromagnetic waves in this device busy.
Description of drawings
Fig. 1 external gear pump structural representation.
The sectional drawing of Fig. 2 Fig. 1.
Fig. 3 crescent gear pump structural representation.
The sectional drawing of Fig. 4 Fig. 3.
Fig. 5 piezoelectricity type external gear pump structural representation.
Fig. 6 drive part structural representation.
Fig. 7 driving principle schematic representation.
Among the figure: 1, driving gear, 2, driven gear, 3, bearing, 4, front pump cover, 5, the pump housing, 6, rear pump cover, 7, collar, 8, first screw, 9, flange, 10, seal ring, 11, gland, 12, friction ring, 13, drive stator, 14, piezoelectric ceramic ring, 15, screw, 16, drive case lid, 17, row ripple direction, 18, surperficial particle motion trace, 19 friction plate sense of rotation.
Embodiment
Below in conjunction with Fig. 5～Fig. 7 specific embodiment of the utility model is described.
This device mainly includes driving gear 1, driven gear 2, also include by driving stator 13, piezoelectric ceramic ring 14, friction ring 12, friction ring 12, drive in the embedded successively from inside to outside cavity that is placed on driving gear 1 axle head of stator 13, piezoelectric ceramic ring 14.Wherein, piezoelectric ceramic ring 14 is fixed as one with driving stator 13, friction ring 12 is fixed as one with driving gear 1, driving stator 13 contacts with friction ring 12 and is in impaction state, arranged outside at piezoelectric ceramic ring has the case lid 16 of driving, drive stator 13 by screw 15 with drive case lid 16 and fixedly connected, driving case lid 16 by screw on the pump housing 5.Driving stator 13 rotates by the frictional force drive driving gear 1 that friction ring 12 produces.
In the present embodiment, collar 7, driving case lid 16 can use metallic material to utilize traditional turning process processing.First screw 8, bearing 3, seal ring 10, screw 15 are commercially available standard piece, and friction ring 12, piezoelectric ceramic ring 14 are commercially available non-standard component, also can utilize commercially available piezoceramic material, friction material to process as required.Drive stator 13 and adopt metallic material, can select brass for use usually, can adopt traditional metal working process to process according to actual needs and with reference to the ultrasound electric machine related data with amplification.Driving gear 1, driven gear 2, front pump cover 4, the pump housing 5, rear pump cover 6, flange 9 and gland 11 can adopt the processing method processing of traditional screw pump.
Claims (1)
1, the piezoelectricity type gear pump, mainly include driving gear (1), driven gear (2), it is characterized in that: also include and drive stator (13), piezoelectric ceramic ring (14), friction ring (12), friction ring (12), drive stator (13), piezoelectric ceramic ring (14) is embedded successively from inside to outside to be placed in the cavity of driving gear (1) axle head, wherein, piezoelectric ceramic ring (14) is fixed as one with driving stator (13), friction ring (12) is fixed as one with driving gear (1), driving stator (13) contacts with friction ring (12) and is in impaction state, arranged outside at piezoelectric ceramic ring has driving case lid (16), drive stator (13) and fixedly connected, drive case lid (16) and be fixed on the pump housing (5) with driving case lid (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023288 CN200955493Y (en) | 2006-07-14 | 2006-07-14 | Piezoelectric gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023288 CN200955493Y (en) | 2006-07-14 | 2006-07-14 | Piezoelectric gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200955493Y true CN200955493Y (en) | 2007-10-03 |
Family
ID=38774078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620023288 Expired - Fee Related CN200955493Y (en) | 2006-07-14 | 2006-07-14 | Piezoelectric gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200955493Y (en) |
-
2006
- 2006-07-14 CN CN 200620023288 patent/CN200955493Y/en not_active Expired - Fee Related
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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 |