CN201723421U - Piezoelectric pump for self-adapting active valve - Google Patents
Piezoelectric pump for self-adapting active valve Download PDFInfo
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- CN201723421U CN201723421U CN2010202006866U CN201020200686U CN201723421U CN 201723421 U CN201723421 U CN 201723421U CN 2010202006866 U CN2010202006866 U CN 2010202006866U CN 201020200686 U CN201020200686 U CN 201020200686U CN 201723421 U CN201723421 U CN 201723421U
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- 239000012530 fluid Substances 0.000 claims abstract description 19
- 239000000919 ceramic Substances 0.000 claims description 12
- 229910001369 Brass Inorganic materials 0.000 claims description 8
- 239000010951 brass Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241001672694 Citrus reticulata Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a piezoelectric pump for a self-adapting active valve. The piezoelectric pump comprises an upper pump cover, a lower pump cover, wherein a pump middle layer arranged between the upper pump cover and the lower pump cover, the upper pump cover is connected with the lower pump cover through a fastening bolt, an upper pump chamber is formed between the upper pump cover and the pump middle layer, a lower pump chamber is formed between the lower pump cover and the pump middle layer, a piezoelectric vibrator is arranged in the middle of the pump middle layer, a valve body including a first valve body and a second valve body is arranged on the piezoelectric vibrator, wherein an inlet valve is formed by the second valve body and an inlet on the lower pump cover, and an outlet valve is formed by the first valve body and an outlet on the upper pump cover. The piezoelectric pump organically combines the piezoelectric vibrator with the valve, thereby facilitating miniaturization; the piezoelectric vibrator is in the fluid completely, thereby facilitating heat radiation and noise reduction; the entire piezoelectric pump can serve as a pipe fitting pump in the axial inflowing and outflowing way; and the entire piezoelectric pump has the advantages of less parts, easy processing and installation, good leak tightness, low cost, easy miniaturization and convenient production.
Description
One, technical field
The utility model relates to a kind of piezoelectric pump, relates in particular to a kind of aggressive valve piezoelectric pump.
Two, background technique
If have valve piezoelectric pump whether to have outer driving source to drive classification, can be divided into: two kinds of aggressive valve piezoelectric pump and passive valve piezoelectric pumps by valve body.The aggressive valve piezoelectric pump be exactly the switching of valve body be to drive by outer driving source, and being the cyclically-varying of pump chamber fluid pressure during by pump work, the passive valve piezoelectric pump drives the switching of valve body, the switching of passive valve piezoelectric pump valve body has hysteresis quality, so influenced the raising of pump efficiency, though and the aggressive valve piezoelectric pump has been eliminated the hysteresis quality of valve body, but additionally increased the drive part of valve body, make complex structure, the control difficulty is big, if valve body opens and closes and the frequency of okperation step difference of pump can play reaction too much on the contrary, seriously restricting the development of aggressive valve piezoelectric pump, though and there is the hysteresis quality of valve body in passive valve, but because of simple in structure and be easy to control, so development is very fast, the passive valve piezoelectric pump is the main flow of research and application at present.
Figure 1 shows that a conventional piezoelectric formula aggressive valve piezoelectric pump schematic representation.In Fig. 1: go up pump cover 11, piezoelectric vibrator 12, sealing rubber circle 13, pump middle level 14, following pump cover 15 and clamping bolt 16.Big piezoelectric vibrator is fixed on down on the pump cover as the power source parts of piezoelectric pump, and two little piezoelectric vibrators and sealing rubber circle constitute two aggressive valve.Piezoelectric vibrator is applied alternating voltage, piezoelectric constant can produce alternately elongation and contraction deformation, piezoelectric vibrator shows as axial vibration, and big piezoelectric vibrator axial vibration changes the pump chamber cycle and absorbs water or draining, and the switching of two aggressive valve is controlled in the vibration of two little piezoelectric vibrators.When piezoelectric pump was in the suction journey, it is big that the volume of pump becomes, and inlet valve piezoelectric vibrator upwards vibration is opened, and the downward vibration of outlet valve piezoelectric vibrator is closed, and fluid sucks pump chamber through inlet valve; When entering scheduling, the volume of pump chamber diminishes, inlet valve piezoelectric vibrator vibration is downwards closed, outlet valve piezoelectric vibrator upwards vibration is opened, and fluid is outside the outlet valve excavationg pump, thus the one-way flow of realization fluid, along with pump chamber changed repeatedly by the cycle, realize the effect of pump, but have only three piezoelectric vibrators to act in agreement, matching coordinative just can make pump that higher efficient is arranged.
The aggressive valve power source also has pneumatic type, thermal type at present, electromagnetic drive type, electrostatically driven formula etc., though various driving mode all have the advantage of self, difficulty, complex structure are processed, installed to a common shortcoming exactly, control loaded down with trivial details, make the efficient of pump be difficult to be improved, and the life-span is short, job insecurity, be unfavorable for the miniaturization of piezoelectric pump and the raising of reliability, this brings difficulty to applying of aggressive valve piezoelectric pump.
Three, summary of the invention
1, technical problem: the technical problems to be solved in the utility model provides a kind of self-adaptive piezoelectric pump with active valve that avoids controlling, overcome the shortcoming of traditional aggressive valve piezoelectric pump, improved the stability of piezoelectric pump work, simplified the piezoelectricity pump structure, made piezoelectric pump be easier to miniaturization.
2, technological scheme: in order to solve above-mentioned technical problem, self-adaptive piezoelectric pump with active valve of the present utility model comprises pump cover, descends pump cover and places pump cover, descends the pump middle level between the pump cover, last pump cover is connected by clamping bolt with following pump cover, form between last pump cover and the pump middle level and go up pump chamber, form pump chamber down between following pump cover and the pump middle level, the pump middle level comprises the first pump middle level and the second pump middle level, and piezoelectric vibrator places between the first pump middle level and the second pump middle level; Piezoelectric vibrator is provided with the valve body of being made up of first valve body and second valve body, and wherein, the inlet on second valve body and the following pump cover forms inlet valve, and the outlet on first valve body and the last pump cover forms outlet valve.
The piezoelectric vibrator of the technical program comprises a brass base, brass base upper and lower surface first, second piezoelectric ceramic that respectively has been sticked; One end of first valve body is sticked on first piezoelectric ceramic, and an end of second valve body is sticked on second piezoelectric ceramic, and piezoelectric vibrator and first, second valve body are an integral body, and usually, the material of valve body is the rubber material.
Work effect for the pump of realizing the technical program, piezoelectric vibrator not only needs to produce displacement in pump chamber, need also to make the fluid flow direction in the pump chamber single simultaneously, therefore, the valve body of the technical program has adopted unique design, and promptly the flange of first valve body places in the outlet of pump cover; The flange of second valve body places down in the inlet of pump cover.The part that inlet holds second valve body is one first cone shape hole, and this first cone shape hole is towards the diameter of the open part of the pump chamber down diameter greater than inlet; The part that first valve body is held in outlet is one second cone shape hole, and this second cone shape hole is towards the diameter of the open part of the last pump chamber diameter less than outlet.The shape on the top of above-mentioned valve body generally adopts the shape of arc, and promptly the top of first valve body is recessed towards the direction of piezoelectric vibrator, and the flange of first valve body also adopts arcuate structure towards the part of piezoelectric vibrator; The top of second valve body is outstanding arc towards the opposite direction of piezoelectric vibrator, and its flange also adopts arcuate structure, so that the fluid in the pump is mobile comparatively smooth and easy, above-mentioned valve body equally also can adopt other shape.
In order to make fluid unobstructed flowing between pump cavity of resorption and pump epicoele, respectively be provided with one group of hole on the first pump middle level and the second pump middle level for fluid flow; Because the cross section of general pump is circle-shaped, described hole is to be evenly distributed on the circumference in pump middle level.
When work, need on first piezoelectric ceramic and second piezoelectric ceramic, respectively draw an electrode, brass base ground connection, for the ease of statement, suppose that the electrode of drawing is two electrodes of A, B, applies sinusoidal ac respectively to A and two electrodes of B, make A, B two-phase voltage-phase differ 180 °, promptly piezoelectric vibrator is applied alternating voltage, piezoelectric vibrator produces axial vibration in the both sides, equilibrium position under inverse piezoelectric effect, and the axial vibration displacement causes that two pump chambers change up and down.An operation cycle of pump is divided into two stages: arrive the upper dead center maximum displacement of away from equilibrium location (piezoelectric vibrator make progress) through the equilibrium position for the scheduling stage of pump epicoele and be the suction journey stage of pump cavity of resorption simultaneously from lower dead centre (maximum displacement of the downward away from equilibrium location of piezoelectric vibrator), described equilibrium position is meant when two electrodes of A, B are not switched on, the residing position of piezoelectric vibrator; Arriving lower dead centre through the equilibrium position from upper dead center is that fluid is from the stage of pump cavity of resorption to the transfer of pump epicoele.Upwards vibration of piezoelectric vibrator in the phase I, pump epicoele volume diminishes, and it is big that pump cavity of resorption volume becomes, and all opens at certain some place's inlet valve and outlet valve, and the liquid in the pump epicoele is discharged through outlet valve, and the pump outer fluid is through inlet valve suction pump cavity of resorption; Piezoelectric vibrator moves from the top down in the second stage, and it is big that pump epicoele volume becomes, and pump cavity of resorption volume diminishes, and all closes at certain some place's inlet valve and outlet valve, and the fluid inflow pump epicoele in the pump cavity of resorption has been realized the transfer of fluid in two pump chambers.Fluid has been realized one-way flow in the pump in one-period, and all can there be a net flow each operation cycle, so repeatedly enter two stages, the folk prescription of also just having realized fluid plays the effect of pump to flowing.
3, beneficial effect
Self-adaptive piezoelectric pump with active valve of the present utility model has the following advantages: (1) piezoelectric vibrator and valve are organically bonding, and the work of valve body switching and pump is acted in agreement, and have saved the control section of aggressive valve, simplify the structure, and help the microminiaturization of pump; (2) piezoelectric vibrator is in the fluid fully, makes oscillator stressed evenly, helps the piezoelectric vibrator heat radiation, and can reduce the noise that the piezoelectric vibrator vibration produces; (3) whole piezoelectric pump adopts and axially becomes a mandarin, axially goes out to flow, and can make the pipe joint pump, can pressurize step by step with a plurality of piezoelectric pumps, and being used in needs delivery pressure than pipeline big or that the long needs of output pipe pressurize; (4) less, the installation and processing of entire pump part easily, good airproof performance, cost be low, is easy to realize microminiaturized, industrialization.
Four, description of drawings
Fig. 1 is existing a kind of aggressive valve piezoelectric pump schematic representation;
Fig. 2 is the internal structure schematic representation of self-adaptive piezoelectric pump with active valve of the present utility model;
Fig. 3 is the structural representation of the piezoelectric vibrator of self-adaptive piezoelectric pump with active valve of the present utility model;
Fig. 4 is the pump middle level schematic representation of self-adaptive piezoelectric pump with active valve of the present utility model.
Five, embodiment
As shown in Figure 2, the self-adaptive piezoelectric pump with active valve of present embodiment, comprise pump cover 3, descend pump cover 5 and place pump cover 3, descend the pump middle level 4 between the pump cover 5, last pump cover 3 is connected by clamping bolt 6 with following pump cover 5, form between last pump cover 3 and the pump middle level 4 and go up pump chamber, form pump chamber down between following pump cover 5 and the pump middle level 4, hold fluid in the pump chamber; Pump middle level 4 comprises the first pump middle level 41 and the second pump middle level 42, and piezoelectric vibrator 1 places between the first pump middle level 41 and the second pump middle level 42, and promptly the edge of piezoelectric vibrator 1 is fixedly clamped by the first pump middle level 41 and the second pump middle level 42; Piezoelectric vibrator 1 is provided with the valve body of being made up of first valve body 21 and second valve body 22 2, and wherein, the inlet 32 on second valve body 22 and the following pump cover 5 forms inlet valves, and the outlet 31 on first valve body 21 and the last pump cover 3 forms outlet valves.The flange 211 of first valve body 21 places in the outlet 31 of pump cover 3; The flange 221 of second valve body 22 places down in the inlet 32 of pump cover 5.Valve body in this enforcement adopts the rubber material.
As shown in Figure 3, piezoelectric vibrator 1 comprises a brass base 101, brass base 101 upper and lower surfaces respectively be sticked first piezoelectric ceramic 102, second piezoelectric ceramic 103; One end of first valve body 21 is sticked on first piezoelectric ceramic 102, and an end of second valve body 22 is sticked on second piezoelectric ceramic 103.Difference extraction electrode ABAP Adapter on first valve body 21, second valve body 22, middle brass base 101 ground connection.
As shown in Figure 2, inlet 32 parts of holding second valve body 22 are one first cone shape hole 321, and this first cone shape hole 321 is towards the diameter of the following open part of the pump chamber diameter greater than inlet 32; Outlet 31 parts of holding first valve body 21 are one second cone shape hole 311, and this second cone shape hole 311 is towards the diameter of the open part of the last pump chamber diameter less than outlet 31.
As shown in Figure 4, respectively be provided with one group of hole for fluid flow on the first pump middle level 41 and the second pump middle level 42, the pump section of present embodiment is circular, and described hole is 6 respectively, is evenly distributed on the circumference.
Claims (7)
1. self-adaptive piezoelectric pump with active valve, comprise pump cover (3), descend pump cover (5) and place pump cover (3), descend the pump middle level (4) between the pump cover (5), last pump cover (3) is connected by clamping bolt (6) with following pump cover (5), form between last pump cover (3) and pump middle level (4) and go up pump chamber, form pump chamber down between following pump cover (5) and pump middle level (4), it is characterized in that, pump middle level (4) comprises the first pump middle level (41) and the second pump middle level (42), and piezoelectric vibrator (1) places between the first pump middle level (41) and the second pump middle level (42); Piezoelectric vibrator (1) is provided with the valve body of being made up of first valve body (21) and second valve body (22) (2), wherein, inlet (32) on second valve body (22) and the following pump cover (5) forms inlet valve, and the outlet (31) on first valve body (21) and the last pump cover (3) forms outlet valve.
2. self-adaptive piezoelectric pump with active valve as claimed in claim 1 is characterized in that, piezoelectric vibrator (1) comprises a brass base (101), brass base (101) upper and lower surface first, second piezoelectric ceramic (102,103) that respectively has been sticked; One end of first valve body (21) is sticked on first piezoelectric ceramic (102), and an end of second valve body (22) is sticked on second piezoelectric ceramic (103).
3. self-adaptive piezoelectric pump with active valve as claimed in claim 1 or 2 is characterized in that, the flange (211) of first valve body (21) places in the outlet (31) of pump cover (3); The flange (221) of second valve body (22) places down in the inlet (32) of pump cover (5).
4. self-adaptive piezoelectric pump with active valve as claimed in claim 3, it is characterized in that, the part that inlet (32) holds second valve body (22) is one first cone shape hole (321), and this first cone shape hole (321) is towards the diameter of the open part of the pump chamber down diameter greater than inlet (32); The part that first valve body (21) is held in outlet (31) is one second cone shape hole (311), and this second cone shape hole (311) is towards the diameter of the open part of the last pump chamber diameter less than outlet (31).
5. self-adaptive piezoelectric pump with active valve as claimed in claim 1 is characterized in that, respectively is provided with one group of hole for fluid flow on the first pump middle level (41) and the second pump middle level (42).
6. self-adaptive piezoelectric pump with active valve as claimed in claim 1 is characterized in that its cross section is rounded.
7. self-adaptive piezoelectric pump with active valve as claimed in claim 1 is characterized in that, described valve body (2) is a rubber valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202006866U CN201723421U (en) | 2010-05-24 | 2010-05-24 | Piezoelectric pump for self-adapting active valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202006866U CN201723421U (en) | 2010-05-24 | 2010-05-24 | Piezoelectric pump for self-adapting active valve |
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| Publication Number | Publication Date |
|---|---|
| CN201723421U true CN201723421U (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202006866U Expired - Lifetime CN201723421U (en) | 2010-05-24 | 2010-05-24 | Piezoelectric pump for self-adapting active valve |
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| Country | Link |
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| CN (1) | CN201723421U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846059A (en) * | 2010-05-24 | 2010-09-29 | 南京航空航天大学 | Self-adaptive piezoelectric pump with active valve |
| CN109162902A (en) * | 2018-09-20 | 2019-01-08 | 长春工业大学 | A kind of floating type I-shaped valve piezoelectric pump |
| CN110296064A (en) * | 2019-06-19 | 2019-10-01 | 浙江师范大学 | A kind of integrated form piezoelectricity delivery pump of drug containing suspended particulate |
| CN112196778A (en) * | 2020-10-06 | 2021-01-08 | 长春工业大学 | Herringbone integrated valve piezoelectric pump |
| CN112196771A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Slope type integrated valve piezoelectric pump |
| CN113464410A (en) * | 2021-08-19 | 2021-10-01 | 浙江大学 | Pressure stepless adjustable large-flow piezoelectric pump |
-
2010
- 2010-05-24 CN CN2010202006866U patent/CN201723421U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846059A (en) * | 2010-05-24 | 2010-09-29 | 南京航空航天大学 | Self-adaptive piezoelectric pump with active valve |
| CN101846059B (en) * | 2010-05-24 | 2012-11-21 | 南京航空航天大学 | Self-adaptive piezoelectric pump with active valve |
| CN109162902A (en) * | 2018-09-20 | 2019-01-08 | 长春工业大学 | A kind of floating type I-shaped valve piezoelectric pump |
| CN109162902B (en) * | 2018-09-20 | 2023-12-15 | 长春工业大学 | Floating type I-shaped valve piezoelectric pump |
| CN110296064A (en) * | 2019-06-19 | 2019-10-01 | 浙江师范大学 | A kind of integrated form piezoelectricity delivery pump of drug containing suspended particulate |
| CN112196771A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Slope type integrated valve piezoelectric pump |
| CN112196778A (en) * | 2020-10-06 | 2021-01-08 | 长春工业大学 | Herringbone integrated valve piezoelectric pump |
| CN113464410A (en) * | 2021-08-19 | 2021-10-01 | 浙江大学 | Pressure stepless adjustable large-flow piezoelectric pump |
| CN113464410B (en) * | 2021-08-19 | 2022-03-22 | 浙江大学 | Pressure stepless adjustable large-flow piezoelectric pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110126 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |