CN106837753B - Become cavity Valveless piezoelectric pump - Google Patents
Become cavity Valveless piezoelectric pump Download PDFInfo
- Publication number
- CN106837753B CN106837753B CN201611196779.4A CN201611196779A CN106837753B CN 106837753 B CN106837753 B CN 106837753B CN 201611196779 A CN201611196779 A CN 201611196779A CN 106837753 B CN106837753 B CN 106837753B
- Authority
- CN
- China
- Prior art keywords
- pump
- pump housing
- pumping passage
- cavity
- piezoelectric
- 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.)
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Links
- 238000005086 pumping Methods 0.000 claims abstract description 39
- 239000011159 matrix material Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 description 29
- 230000000694 effects Effects 0.000 description 7
- 238000003756 stirring Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002262 irrigation Effects 0.000 description 3
- 238000003973 irrigation Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003592 biomimetic effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
- F04B43/043—Micropumps
- F04B43/046—Micropumps with piezoelectric drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0027—Special features without valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
A kind of change cavity Valveless piezoelectric pump, including the pump housing and the piezoelectric vibrator that is transversely mounted in the inner cavity of the pump housing, inlet and liquid outlet is respectively set in the front-end and back-end of the pump housing.Inner core is installed in the inner cavity of the pump housing, the outer wall of the inner core is attached on the inner wall of the pump housing, the inner core is horizontally arranged with pumping passage, and the longitudinal section product of the pumping passage is accumulated less than the longitudinal section of the pump housing inner cavity, and rear end and the liquid outlet interval of the pumping passage are arranged.The piezoelectric vibrator includes the oscillator matrix of plate, and the upper and lower surface of the oscillator matrix is fitted with piezoelectric ceramics, and oscillator matrix front end is fixed by the bracket in the inner cavity of the pump housing.
Description
Technical field
The present invention relates to a kind of Valveless piezoelectric pumps, specifically, being a kind of based on biomimetic type flexible caudal fin piezoelectric vibrator
Become cavity Valveless piezoelectric pump.
Background technology
It is mostly rectangular pump in existing piezoelectric pump, is unfavorable for applying in trickle irrigation, and pulsator is mostly bluff body valveless
It pumping, has valve pump, structural volume is larger, and piezoelectric vibrator mostly uses periphery fixed, there is a problem of that amplitude is small, pump discharge is small,
Although piezoelectric stack pump makes oscillator, amplitude increased, need using multi-grade lever enlarger, amplification effect unobvious more,
It causes volume larger simultaneously, is unfavorable for the microminiaturization of pump, and for existing bi-morph piezo-electric oscillator tail fin, rectangle is mostly used,
Although pump discharge increases, mixing effect is bad, and pump discharge is still to be improved.
Invention content
The present invention for above-mentioned current piezoelectric pump there are the problem of, propose that a kind of pump output is big, small, mixing effect
Well, conducive to the Valveless piezoelectric pump used in trickle irrigation.
The change cavity Valveless piezoelectric pump of the present invention, including the pump housing and the piezoelectricity that is transversely mounted in the inner cavity of the pump housing shake
Inlet and liquid outlet is respectively set in the front-end and back-end of son, the pump housing.
Inner core is installed, the outer wall of the inner core is attached on the inner wall of the pump housing, described interior in the inner cavity of the pump housing
Core is horizontally arranged with pumping passage, and the longitudinal section product of the pumping passage is accumulated less than the longitudinal section of the pump housing inner cavity, the pump
The rear end and liquid outlet interval for sending channel are arranged.
The piezoelectric vibrator includes the oscillator matrix of plate, and the upper and lower surface of the oscillator matrix is fitted with pressure
Electroceramics, oscillator matrix front end are fixed by the bracket in the inner cavity of the pump housing.
Preferably, oscillator matrix rear end is equipped with flexible caudal fin, the width of the flexible caudal fin from front to back by
It is cumulative big.
Preferably, the pumping passage is divided into multiple pump segments, the longitudinal section product of one of pump segment from front to back
The respectively less than longitudinal section product of another adjacent pump segment of rear side.
Preferably, the cross section of the pump housing inner cavity is round or oval, and the cross section of the pumping passage is square
Shape.
Preferably, the inner core is located at the middle part of the pump housing, will be divided into first inner chamber and second before and after the inner cavity of the pump housing
Chamber.
Preferably, the pump housing includes main body and two ends being separately mounted in the opening of main body both ends setting
Lid, the inlet and liquid outlet are separately positioned on the end cap of front end and on the end cap of rear end.
Preferably, further comprise that pump seat, the pump housing are cylinder, penetrate and be fixed on the mounting hole of pump seat setting
In.
The beneficial effects of the invention are as follows：Become the pumping passage that installation space is smaller inside cavity Valveless piezoelectric pump, makes liquid
After in into the pump housing, fluid can be made to enter large space by small space, reduce fluid resistance, be conducive to fluid and flow, improve pump
The amount of sending.
Piezoelectric vibrator installs flexible caudal fin, and movable amplitude is big, and has larger width, can shake not increasing piezoelectricity
In the case of sub-volume, pumpability is improved.
Space gradually increased structure is formed in pumping passage, reduces fluid resistance, increases pump output.Larger interior in space
For chamber using round, the smaller pumping passage in space further increases variation degree when fluid circulation space variation using rectangular,
It is more conducive to the mixing or pumping of fluid.And pumping passage is using rectangular, make pumping passage inner wall and piezoelectric vibrator away from
It is close from relatively, increase the effect that fluid is stirred mixing.
Inner core will be divided into three sections in the pump housing, enable a fluid to be introduced into small space by large space, improve stirring and mixing effect.
Inlet and liquid outlet are arranged on end cap, so that the pump housing is passed through end cap and open, and are convenient for the installation of internal structure.
Using circle, small, convenient for being adapted in trickle irrigation, the pump housing is fixed on pump seat the pump housing, can be stablized in the plane and be put
It sets.
Description of the drawings
Attached drawing 1 is the structural schematic diagram one for becoming cavity Valveless piezoelectric pump；
Attached drawing 2 is the structural schematic diagram two for becoming cavity Valveless piezoelectric pump；
Attached drawing 3 is the structural schematic diagram three for becoming cavity Valveless piezoelectric pump；
Attached drawing 4 is the structural schematic diagram of piezoelectric vibrator.
Specific implementation mode
It is detailed in conjunction with appended preferred embodiment in order to further appreciate that structure, feature and the other purposes of the present invention
It is described as follows, illustrated preferred embodiment is only used to illustrate the technical scheme of the present invention, and the non-limiting present invention.
The specific implementation mode of the present invention is as follows：
As shown in Figures 1 to 3, it includes the pump housing 1 and the pressure that is transversely mounted in the inner cavity of the pump housing 1 to become cavity Valveless piezoelectric pump
Electric tachometer indicator 2.
Inlet 11 and liquid outlet 12 is respectively set in the front-end and back-end of the pump housing 1.
Inner core 3 is installed, the outer wall of inner core 3 is attached on the inner wall of the pump housing 1 in the inner cavity of the pump housing 1.
Inner core 3 is horizontally arranged with pumping passage 4, and 4 front end of pumping passage is aligned with inlet 11, and rear end and liquid outlet 12 are right
Together.The longitudinal section product of pumping passage 4 is accumulated less than the longitudinal section of 1 inner cavity of the pump housing, and rear end and the interval of liquid outlet 12 of pumping passage 4 are set
It sets.
As shown in figure 4, piezoelectric vibrator 2 includes the oscillator matrix 21 of plate, the upper and lower surface of oscillator matrix 21 is all
Piezoelectric ceramics 22 is installed.
21 front end of oscillator matrix is fixed on by holder 23 in the inner cavity of the pump housing 1, and middle part is located in pumping passage 4.
By inverse piezoelectric effect, piezoelectric ceramics 22 drives oscillator matrix 21 to generate flexural deformation, swings up and down, stir the pump housing
Fluid in 1.
Fluid is entered from inlet 11 in the pumping passage 4 in the pump housing 1, under the action of piezoelectric vibrator 2, is entered back into
The inner cavity at 1 rear portion of the pump housing, pumps out finally by liquid outlet 12.
During fluid flows from front to back in the pump housing 1, first circulate in the smaller pumping passage 4 in space, then
The pump larger into space carries the inner cavity at 1 rear portion, and the space enabled flow across becomes larger, and reduces the resistance of fluid flowing, is conducive to stream
Body flows, and increases the speed that fluid is pumped out by liquid outlet 12, to increase the pump output of piezoelectric pump.
In order to further increase pumping effect, 21 rear end of oscillator matrix is equipped with flexible caudal fin 24,24 quality of flexible caudal fin
More soft, in the case that oscillator matrix 21 is swung up and down, flexible caudal fin 24 is also swung up and down therewith, and amplitude of fluctuation is more than
Oscillator matrix 21 improves the degree that fluid is struck, to increase the speed of fluid from flowing backward.
The width of flexible caudal fin 24 gradually increases from front to back, so that flexible caudal fin 24 is had larger area, further carries
The high degree that it stirs fluid.
Pumping passage 4 is divided into multiple pump segments 41 from front to back, after the longitudinal section product of one of pump segment 41 is respectively less than
It accumulates the longitudinal section of another adjacent pump segment 41 of side.
In pumping passage 4 from front to back, space increases paragraph by paragraph, and flow resistance of the fluid in pumping passage 4 is made to subtract paragraph by paragraph
Small, the flow velocity of fluid is accelerated paragraph by paragraph.Also make 41 space of pump segment of 4 leading portion of pumping passage smaller, can make fluid converge to compared with
Small space, is mixed, and the whipping performance of piezoelectric pump is enhanced.
The cross section of 1 inner cavity of the pump housing is round or oval, and the cross section of pumping passage 4 is rectangle.Fluid leaves pumping
Behind channel 4, into 1 inner cavity of the pump housing, fluid is made to enter more smooth circular space from the rectangular space with corner angle, into one
Step increases the amplitude that fluid resistance reduces.
And the pumping passage 4 of rectangular space enables each surface of 4 inner wall of pumping passage to the greatest extent close to piezoelectricity
Oscillator 2 makes the fluid in pumping passage 4 all be pooled to around piezoelectric vibrator 2, keeps the movement of piezoelectric vibrator 2 more obvious
Be applied on fluid, keep the liquidity of fluid stronger, increase the stirring extent of fluid, to improve mixing performance.
In order to further increase the mixing performance of pump, inner core 3 is located at the middle part of the pump housing 1, before and after the inner cavity of the pump housing 1
It is divided into first inner chamber 13 and second inner chamber 14.
Fluid enters from inlet 11 in the pump housing 1, before entering pumping passage 4, is introduced into the larger pump housing 1 in space
Then chamber enters back into the smaller pumping passage 4 in space.After so that fluid is first converged, pumping passage 4 is entered back into, is enabled a fluid to
With mixing, the purpose of stirring is realized.
For the ease of assembly, the pump housing 1 include main body 15 and be separately mounted to 15 both ends of main body setting opening on two
A end cap 16.Inlet 11 and liquid outlet 12 are separately positioned on the end cap 16 of front end and on the end cap 16 of rear end.
End cap 16 is removed from main body 15, you can the pump housing 1 is opened, by the opening at 1 both ends of the pump housing, dismantled and assembled inner core
3, the component in 1 inner cavity of the pump housings such as piezoelectric vibrator 2, is easy for installation and maintenance.
In order to reduce the volume of pump, the pump housing 1 is cylinder, is mounted on pump seat 5.The pump housing 1 penetrates and is fixed on pump seat 5 and sets
In the mounting hole 6 set.
Claims (7)
1. a kind of change cavity Valveless piezoelectric pump, which is characterized in that including the pump housing (1) and be transversely mounted on the inner cavity of the pump housing (1)
In piezoelectric vibrator (2), inlet (11) and liquid outlet (12) is respectively set in the front-end and back-end of the pump housing (1)；
Inner core (3) is installed, the outer wall of the inner core (3) is attached to the inner wall of the pump housing (1) in the inner cavity of the pump housing (1)
On, the inner core (3) is horizontally arranged with pumping passage (4), and the longitudinal section product of the pumping passage (4) is less than the pump housing (1)
The longitudinal section of inner cavity is accumulated, and rear end and liquid outlet (12) interval of the pumping passage (4) are arranged；
The piezoelectric vibrator (2) includes the oscillator matrix (21) of plate, and the upper and lower surface of the oscillator matrix (21) is all
Piezoelectric ceramics (22) is installed, oscillator matrix (21) front end is fixed on by holder (23) in the inner cavity of the pump housing (1).
2. change cavity Valveless piezoelectric pump according to claim 1, which is characterized in that oscillator matrix (21) the rear end installation
The width of flexible tail fin (24), the flexible caudal fin (24) gradually increases from front to back.
3. change cavity Valveless piezoelectric pump according to claim 1, which is characterized in that the pumping passage (4) is from front to back
It is divided into multiple pump segments (41), the longitudinal section product of one of pump segment (41) is respectively less than another adjacent pump segment of rear side
(41) longitudinal section product.
4. according to the change cavity Valveless piezoelectric pump of any one of claims 1 to 3, which is characterized in that the cross of the pump housing (1) inner cavity
Section is round or oval, and the cross section of the pumping passage (4) is rectangle.
5. according to the change cavity Valveless piezoelectric pump of any one of claims 1 to 3, which is characterized in that the inner core (3) is located at the pump housing
(1) middle part will be divided into first inner chamber (13) and second inner chamber (14) before and after the inner cavity of the pump housing (1).
6. change cavity Valveless piezoelectric pump according to claim 1, which is characterized in that the pump housing (1) includes main body (15)
And it is separately mounted to two end caps (16) in the opening of main body (15) both ends setting, the inlet (11) and liquid outlet
(12) it is separately positioned on the end cap (16) of front end and on the end cap (16) of rear end.
7. change cavity Valveless piezoelectric pump according to claim 1, which is characterized in that further comprise pump seat (5), the pump
Body (1) is cylinder, penetrates and is fixed in the mounting hole (6) of pump seat (5) setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611196779.4A CN106837753B (en) | 2016-12-22 | 2016-12-22 | Become cavity Valveless piezoelectric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611196779.4A CN106837753B (en) | 2016-12-22 | 2016-12-22 | Become cavity Valveless piezoelectric pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106837753A CN106837753A (en) | 2017-06-13 |
| CN106837753B true CN106837753B (en) | 2018-07-13 |
Family
ID=59136831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611196779.4A Active CN106837753B (en) | 2016-12-22 | 2016-12-22 | Become cavity Valveless piezoelectric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106837753B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196769B (en) * | 2020-09-29 | 2022-11-08 | 长春工业大学 | Valveless piezoelectric pump with pectoral fin imitating structure |
| CN112177903A (en) * | 2020-09-29 | 2021-01-05 | 长春工业大学 | Rectangular cavity flexible membrane double-vibrator valveless piezoelectric pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3587328A (en) * | 1969-06-05 | 1971-06-28 | Hercules Inc | A fluid-jet deflection type instrument having a diaphragm type pump with piezoelectric actuation |
| US7390294B2 (en) * | 2004-05-28 | 2008-06-24 | Ethicon Endo-Surgery, Inc. | Piezo electrically driven bellows infuser for hydraulically controlling an adjustable gastric band |
| CN101858331B (en) * | 2010-05-18 | 2012-07-04 | 南京航空航天大学 | Valveless piezoelectric stack pump |
| CN104963834B (en) * | 2015-06-30 | 2017-02-01 | 丽水学院 | Oscillating vibrator of piezoelectric pump |
| CN206338175U (en) * | 2016-12-22 | 2017-07-18 | 青岛农业大学 | Become cavity valveless piezoelectric pump |
-
2016
- 2016-12-22 CN CN201611196779.4A patent/CN106837753B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106837753A (en) | 2017-06-13 |
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