CN106121976A - Lever triangle amplifies piezoelectric stack pump - Google Patents
Lever triangle amplifies piezoelectric stack pump Download PDFInfo
- Publication number
- CN106121976A CN106121976A CN201610716646.9A CN201610716646A CN106121976A CN 106121976 A CN106121976 A CN 106121976A CN 201610716646 A CN201610716646 A CN 201610716646A CN 106121976 A CN106121976 A CN 106121976A
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- Prior art keywords
- arm
- lever
- pump
- piezoelectric stack
- triangle
- Prior art date
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- 238000005452 bending Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 230000003321 amplification Effects 0.000 abstract description 10
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 7
- 230000010355 oscillation Effects 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 description 18
- 238000005299 abrasion Methods 0.000 description 6
- 230000002262 irrigation Effects 0.000 description 5
- 238000003973 irrigation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000037147 athletic performance Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229940059082 douche Drugs 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Reciprocating Pumps (AREA)
- Soil Sciences (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
A kind of lever triangle amplifies piezoelectric stack pump, is provided with lever triangle enlarger, lever triangle enlarger symmetrical configuration in the pump housing, and top contacts with raising one's arm, including Triangular Arm, lever arm, a bearing and driving arm.Triangular Arm, lever arm and a bearing are all symmetrical arranged two.Between the top of Triangular Arm hinged, between Triangular Arm institute in angle less than 180 degree.Lever arm outer end is hinged with the bottom of Triangular Arm, inner hinged with a bearing.Prop up bearing affixed with the pump housing.Driving arm to contact with piezoelectric stack, two ends are connected with the middle part of corresponding lever arm by connecting rod respectively.Lever triangle is amplified the Oscillation Amplitude of raising one's arm of piezoelectric stack pump and is amplified by lever triangle enlarger, in lever triangle enlarger, there is triangular structure and lever construction, vibration can be amplified, define the effect that two-stage is amplified, enhance the Oscillation Amplitude raised one's arm, amplification effect is obvious, improves the pump discharge of pump, and its structure is the most relatively simple.
Description
Technical field
The present invention relates to a kind of piezoelectric pump, specifically, be that a kind of lever triangle amplifies piezoelectric stack pump.
Background technology
Drip irrigation is one of current maximally effective irrigation technique, for alleviate water scarcity have important promotional value and
Application prospect. as the core component of drip irrigation system, although existing douche substantially disclosure satisfy that crop drip irrigation demand, but
There is structure complexity, water dropper easily blocks and is difficult to the shortcomings such as accurate control with flow.And Valveless piezoelectric pump has simple in construction, micro-
Low discharge controllability is good, be prone to the advantages such as miniaturization, has broad application prospects, and will become a kind of new especially in drip irrigation field
Fluid pumping mode.
But existing piezoelectric pump exists more deficiency: first, existing piezoelectric pump generally uses bi-morph piezo-electric oscillator or pressure
Electricity stacks, and for bi-morph piezo-electric oscillator, generally uses periphery fixed, or the mode that cantilever beam is clamped, and its amplitude is the least；Piezoelectricity
Though stack pump makes oscillator amplitude increased, but using multi-grade lever enlarger, amplification effect is inconspicuous, and oscillator amplitude is still more
So can not meet the output requirement of Valveless piezoelectric pump high volume；Secondly, existing piezoelectric stack uses point cantact with contacting of oscillator more
Or linear contact lay, when piezoelectric pump works long hours, above-mentioned contact method easily causes abrasion, causes piezoelectric pump component abrasion, causes
Pump discharge reduces even without flow output.
Summary of the invention
The present invention is directed to existing piezoelectric stack pump amplification effect inconspicuous, it is impossible to meet the output requirement of big flow, have resulted in
The problems such as abrasion, it is proposed that a kind of lever triangle amplifies piezoelectric stack pump.
The lever triangle of the present invention amplifies piezoelectric stack pump, including the pump housing of hollow, is provided with piezo stack in the described pump housing
Heap and by raising one's arm that piezoelectric stack drives, the described pump housing is provided with feeding mouth and pump discharge, described pump discharge with raise one's arm before
End alignment.
Lever triangle enlarger is installed in the described pump housing, described lever triangle enlarger symmetrical configuration, top with
Raise one's arm contact, including Triangular Arm, lever arm, a bearing with drive arm.
Described Triangular Arm, lever arm and a bearing are all symmetrical arranged two.
Between the top of described Triangular Arm hinged, between described Triangular Arm institute in angle less than 180 degree.
Described lever arm outer end is hinged with the bottom of Triangular Arm, inner hinged with a bearing.
Described bearing is affixed with the pump housing.
Described driving arm contacts with piezoelectric stack, and two ends are connected with the middle part of corresponding lever arm by connecting rod respectively.
Preferably, described lever arm is Z-shape, bending place ecto-entad be divided into outer section, stage casing and inner segment, described outer section
Top is hinged with Triangular Arm, and described inner segment bottom is hinged with a bearing.
Preferably, the length of the outer section of described lever arm is more than or equal to the length of connecting rod.
Preferably, described in raise one's arm bottom the parallel cylindrical roller that is provided with, the Triangular Arm of described lever triangle enlarger
Between by flexible hinge be connected, bottom described cylindrical roller, position portion is positioned in flexible hinge.
Preferably, described cylindrical roller top is positioned in the mounting groove that bottom of raising one's arm is arranged, and described mounting groove inwall is
The circular arc concentric with cylindrical roller.
Preferably, being provided with spacing block in the described pump housing, described spacing block top arranges the gathering sill of opening upwards, institute
State piezoelectric stack to be positioned in gathering sill.
Preferably, fixing seat, the fixed plate of described fixing seat top installation and rear end of raising one's arm are installed in the described pump housing
Hinged by flexible hinge.
The invention has the beneficial effects as follows: lever triangle amplifies the Oscillation Amplitude of raising one's arm of piezoelectric stack pump to be put by lever triangle
Great institutions is amplified, and has triangular structure and lever construction, can be amplified vibration in lever triangle enlarger,
Defining the effect that two-stage is amplified, enhance the Oscillation Amplitude raised one's arm, amplification effect is obvious, improves the pump discharge of pump, and
And its structure is the most relatively simple.
Lever arm is Z-shape, and one end protrudes upward, and enhances its amplitude pushing Triangular Arm, improves triangular structure pair
The amplification of vibration；The other end extends downwardly from, and enhances the amplitude of fluctuation of lever arm, improves lever construction and puts vibration
Big effect, further enhancing the effect that vibration is amplified in terms of two.
The outer segment length that lever arm protrudes upward is relatively big, prevents Triangular Arm from encountering driving arm, it is ensured that whole enlarger is transported
Row is steadily.
Vibration is passed to raise one's arm by lever triangle enlarger by cylindrical roller, cylindrical roller upper face and bottom table
Face respectively with raise one's arm and lever triangle enlarger is fully contacted, improve contact area, reduce the abrasion of parts, extend
In the service life of equipment, the amplitude raised one's arm is enable to keep consistent for a long time, it is to avoid pump output reduces or cutout.
By the gathering sill of spacing block, the direction of vibration of piezoelectric stack is limited, it is ensured that the vertical position of piezoelectric stack
Move to export to and drive on arm, make the carrying out of driving arm amplitude peak vibrate.
Raise one's arm and playbacked by flexible hinge, and promote lever triangle enlarger to playback, accelerate the playback speed of all parts
Degree, so as to carry out run action next time faster, accelerates the frequency of vibration produced, improves pump output.
Accompanying drawing explanation
Accompanying drawing 1 amplifies the overall structure figure of piezoelectric stack pump for lever triangle；
Accompanying drawing 2 is the structural representation one of lever triangle enlarger；
Accompanying drawing 3 is lever triangle enlarger and the installation diagram one raised one's arm；
Accompanying drawing 4 is lever triangle enlarger and the installation diagram two raised one's arm；
Accompanying drawing 5 is the structure chart of spacing block.
Detailed description of the invention
In order to be able to further appreciate that the structure of the present invention, feature and other purpose, detailed in conjunction with appended preferred embodiment
Being described as follows, illustrated preferred embodiment is merely to illustrate technical scheme, and the non-limiting present invention.
The detailed description of the invention of the present invention is as follows:
As Fig. 1 is to shown in 5, and lever triangle amplifies piezoelectric stack pump, including the pump housing 1 of hollow, is provided with piezoelectricity in the pump housing 1
Stack 2 and raised one's arm 3 by what piezoelectric stack 2 drove.
Be provided with feeding mouth 1.1 and pump discharge 1.2 on the pump housing 1, pump discharge 1.2 with raise one's arm 3 front end align.
Liquid enters and is full of the inner chamber of the pump housing 1 from sending into mouth 1.1, and piezoelectric stack 2 drives 3 reciprocally swingings of raising one's arm, and stirs
The liquid of its front end, releases liquid from the pump discharge of 3 front end alignment of raising one's arm, it is achieved the pumping of liquid.
In order to strengthen raise one's arm 3 amplitude of fluctuation, thus improve the pumped liquid scale of construction, lever triangle enlarger be installed in the pump housing 1
Structure 4.
Lever triangle enlarger 4 symmetrical configuration, top 3 contacts with raising one's arm, including Triangular Arm 5, lever arm 6, a bearing 7
With driving arm 8.
Triangular Arm 5, lever arm 6 and a bearing 7 are all symmetrical arranged two.
Between the top of Triangular Arm 5 hinged, between Triangular Arm 5 institute in angle less than 180 degree.
Lever arm 6 outer end is hinged with the bottom of Triangular Arm 5, inner hinged with a bearing 7.
Prop up bearing 7 affixed with the pump housing 1.
Driving arm 8 to contact with piezoelectric stack 2, two ends are connected with the middle part of corresponding lever arm 6 by connecting rod 9 respectively.
Piezoelectric stack 2 is energized, and produces vertical deformation, promotes and drives arm 8 to move up, drives lever arm 6.
Lever arm 6 is as lever construction, owing to the inner of lever arm 6 is hinged with a bearing 7, the displacement of lever arm 6 outer end
More than inner displacement.Drive arm 8 to drive the middle part of lever arm 6, drive the displacement of arm 8 generation and the lever arm 6 affixed with it
The displacement at middle part is identical, and the displacement that lever arm 6 outer end produces is then more than the displacement in the middle part of lever arm 6, then more than driving arm 8
The displacement produced.So driving arm 8 to produce less displacement, it is possible to make lever arm 6 outer end produce bigger displacement, produce one-level
Amplification effect.
The outer end of lever arm 6 promotes Triangular Arm 5, two Triangular Arms 5 in angle to form triangular structure further.Due to
The outer end of lever arm 6, to medial movement, makes two Triangular Arms 5 to contract, and makes the top of two Triangular Arms 5 upwardly,
Produce two grades of amplification effects.
The top of Triangular Arm 5 is upwardly raised one's arm in the middle part of 3, and 3 front ends that make to raise one's arm are swung up.Owing to raising one's arm, 3 rear portions are fixed
Or hinged, the displacement of 3 front ends of raising one's arm, more than the displacement raised one's arm in the middle part of 3, produces three grades of amplification effects.
Raising one's arm after 3 front ends are swung up, piezoelectric stack recovers, and 3 itself swings the elastic force produced by raising one's arm, and makes to raise one's arm 3
Front end swung downward, drives all parts playback of lever triangle enlarger 4, and then piezoelectric stack 2 is once again powered up, and produces perpendicular
To deformation, 3 front ends that again make to raise one's arm are swung up.
Move in circles work in the manner described above, and making to raise one's arm 3 constantly swings up and down, and forms vibration.Piezoelectric stack 2 deformation is produced
Raw displacement amplitude is strengthened by lever triangle enlarger 4, and pass to raise one's arm 3 front end, add 3 energy stirring water of raising one's arm
Power, improves pump output.
Pin joint between Triangular Arm 5, between Triangular Arm 5 and lever arm 6, between lever arm 6 and a bearing 7 all can use
Flexible hinge, due to the character of flexible hinge itself, when restoring to the original state on piezoelectric stack summit, can make thick stick by flexible hinge
The Triangular Arm 5 of bar triangle enlarger 4, lever arm 6, a bearing 7 and driving arm 8 also reply original state, in order to carry out next
Secondary displacement equations.
In order to improve the amplification effect of lever construction further, lever arm 6 is Z-shape, bending place ecto-entad outside being divided into
Section 6.1, stage casing 6.2 and inner segment 6.3.
Outer section of 6.1 tops are hinged with Triangular Arm 5, and inner segment 6.3 bottom is hinged with a bearing 7, reduces lever arm 6 arm of force
Length, enables lever arm 6 outer end to move upwardly and inwardly greatly, increases the mobile range of Triangular Arm 5, improves vibration
Amplification effect.
In order to ensure lever triangle enlarger 4 stable motion, the length of the outer section of lever arm 6 is more than or equal to connecting rod 9
Length.Make driving arm 8 be positioned at Triangular Arm 5 bottom part down, prevent from driving arm 8 motion to make to touch Triangular Arm 5, hinder Triangular Arm 5 to
Contract para-position moves and is amplified.
In order to alleviate abrasion, the parallel cylindrical roller 10 that is provided with bottom 3 of raising one's arm, the Triangular Arm 5 of lever triangle enlarger 4
Between by flexible hinge be connected, bottom cylindrical roller 10, position portion is positioned in flexible hinge.
Cylindrical roller 10 top is positioned at raises one's arm in the mounting groove 11 arranged bottom 3, and mounting groove 11 inwall is and cylindrical roller
10 concentric circular arcs.
Lever triangle enlarger 4 promotes cylindrical roller 10, cylindrical roller 10 raise one's arm 3 in promotion, cylindrical roller 10 with
Lever triangle enlarger 4 and the contact raised one's arm between 3 are all face contact, it is to avoid the abrasion that point cantact or linear contact lay cause, and damage
Lose displacement enlargement.
Farthest produce vertical displacement in order to piezoelectric stack 2 deforms, spacing block 12, spacing block are installed in the pump housing 1
12 tops arrange the gathering sill 13 of opening upwards, and piezoelectric stack 2 is positioned in gathering sill 13.
Gathering sill 13 limits the direction of displacement that piezoelectric stack 2 deformation produces, and the vertical displacement making piezoelectric stack 2 produce is maximum
The passing to of degree drives arm 8, makes the displacement amplitude that driving arm 8 produces increase, the Oscillation Amplitude of 3 thus enhancing is raised one's arm.
In order to improve the speed of service of all parts further, fixing seat 14 is installed in the pump housing 1, fixing seat 14 top peace
The fixed plate 15 of dress is hinged with 3 rear ends of raising one's arm, and pin joint uses flexible hinge.Raise one's arm 3 be swung up after, flexible hinge can be by
Raise one's arm and 3 pull playback, and the 3 promotion lever triangle enlargers 4 that make to raise one's arm playback, and increase the playback speed of all parts, make down
Athletic performance can be carried out faster, thus strengthens the frequency of vibration, improves pumpability.
Claims (7)
1. lever triangle amplifies a piezoelectric stack pump, and including the pump housing (1) of hollow, the described pump housing is provided with piezo stack in (1)
Heap (2) and raise one's arm (3) that driven by piezoelectric stack (2), the described pump housing (1) is provided with feeding mouth (1.1) and pump discharge
(1.2), described pump discharge (1.2) aligns with the front end of raise one's arm (3)；
It is characterized in that, lever triangle enlarger (4), described lever triangle enlarger (4) are installed in the described pump housing (1)
Symmetrical configuration, top contacts with raise one's arm (3), including Triangular Arm (5), lever arm (6), a bearing (7) and driving arm (8)；
Described Triangular Arm (5), lever arm (6) and a bearing (7) are all symmetrical arranged two；
Between the top of described Triangular Arm (5) hinged, between described Triangular Arm (5) institute in angle less than 180 degree；
Described lever arm (6) outer end is hinged with the bottom of Triangular Arm (5), inner hinged with a bearing (7)；
Described bearing (7) is affixed with the pump housing (1)；
Described driving arm (8) contacts with piezoelectric stack (2), and two ends are respectively by the middle part of connecting rod (9) with corresponding lever arm (6)
It is connected.
Lever triangle the most according to claim 1 amplifies piezoelectric stack pump, it is characterised in that described lever arm (6) is in Z
Shape, is divided into outer section (6.1), stage casing (6.2) and inner segment (6.3), described outer section of (6.1) top and triangle by bending place ecto-entad
Arm (5) is hinged, and described inner segment (6.3) bottom is hinged with a bearing (7).
Lever triangle the most according to claim 2 amplifies piezoelectric stack pump, it is characterised in that described lever arm (6) outer section
Length more than or equal to the length of connecting rod (9).
Lever triangle the most according to claim 1 amplifies piezoelectric stack pump, it is characterised in that described in (3) bottom of raising one's arm flat
Row is provided with cylindrical roller (10), is connected by flexible hinge between the Triangular Arm (5) of described lever triangle enlarger, described
Position portion, cylindrical roller (10) bottom is positioned in flexible hinge.
Lever triangle the most according to claim 4 amplifies piezoelectric stack pump, it is characterised in that described cylindrical roller (10) pushes up
Portion is positioned in the mounting groove (11) that (3) bottom of raising one's arm is arranged, and described mounting groove (11) inwall is and cylindrical roller (10)
Concentric circular arc.
Lever triangle the most according to claim 1 amplifies piezoelectric stack pump, it is characterised in that install in the described pump housing (1)
Having spacing block (12), described spacing block (12) top to arrange the gathering sill (13) of opening upwards, described piezoelectric stack (2) is positioned at leads
In groove (13).
Lever triangle the most according to claim 1 amplifies piezoelectric stack pump, it is characterised in that install in the described pump housing (1)
Having fixing seat (14), the fixed plate (15) that described fixing seat (14) top is installed is hinged by flexible hinge with (3) rear end of raising one's arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610716646.9A CN106121976B (en) | 2016-08-24 | 2016-08-24 | Lever triangle amplifies piezoelectric stack pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610716646.9A CN106121976B (en) | 2016-08-24 | 2016-08-24 | Lever triangle amplifies piezoelectric stack pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106121976A true CN106121976A (en) | 2016-11-16 |
| CN106121976B CN106121976B (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610716646.9A Active CN106121976B (en) | 2016-08-24 | 2016-08-24 | Lever triangle amplifies piezoelectric stack pump |
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| Country | Link |
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| CN (1) | CN106121976B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111223635A (en) * | 2018-11-27 | 2020-06-02 | 株式会社碧陆斯 | Voltage transformation device |
| CN112196770A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Fish-imitating valveless piezoelectric stack pump |
| CN112228322A (en) * | 2020-09-17 | 2021-01-15 | 江苏大学 | Microminiature piezoelectric pump |
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| CN101858331A (en) * | 2010-05-18 | 2010-10-13 | 南京航空航天大学 | Valveless piezoelectric stack pump |
| CN205207125U (en) * | 2015-12-22 | 2016-05-04 | 吉林大学 | Piezoelectric stack impacted style water jet propulsion pump |
| CN206000714U (en) * | 2016-08-24 | 2017-03-08 | 青岛农业大学 | Lever triangle amplifies piezoelectric stack pump |
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2016
- 2016-08-24 CN CN201610716646.9A patent/CN106121976B/en active Active
Patent Citations (4)
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|---|---|---|---|---|
| JPS63151088A (en) * | 1986-12-16 | 1988-06-23 | Nippon Denso Co Ltd | Structure of monolithic piezoelectric element |
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| CN205207125U (en) * | 2015-12-22 | 2016-05-04 | 吉林大学 | Piezoelectric stack impacted style water jet propulsion pump |
| CN206000714U (en) * | 2016-08-24 | 2017-03-08 | 青岛农业大学 | Lever triangle amplifies piezoelectric stack pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111223635A (en) * | 2018-11-27 | 2020-06-02 | 株式会社碧陆斯 | Voltage transformation device |
| CN112228322A (en) * | 2020-09-17 | 2021-01-15 | 江苏大学 | Microminiature piezoelectric pump |
| CN112228322B (en) * | 2020-09-17 | 2022-03-22 | 江苏大学 | Microminiature piezoelectric pump |
| CN112196770A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Fish-imitating valveless piezoelectric stack pump |
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| Publication number | Publication date |
|---|---|
| CN106121976B (en) | 2018-02-06 |
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