CN1373294A - Finger-type pump and its drive mode - Google Patents
Finger-type pump and its drive mode Download PDFInfo
- Publication number
- CN1373294A CN1373294A CN 02117260 CN02117260A CN1373294A CN 1373294 A CN1373294 A CN 1373294A CN 02117260 CN02117260 CN 02117260 CN 02117260 A CN02117260 A CN 02117260A CN 1373294 A CN1373294 A CN 1373294A
- Authority
- CN
- China
- Prior art keywords
- piezoelectric ceramic
- finger
- sealed cavity
- type pump
- ceramic vibrator
- 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.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 27
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000003814 drug Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012377 drug delivery Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
A finger-type pump used in medicine field has n enclosed cavities containing incompressible fluid, and is composed of the hydraulic plunger unit consisting of slide head and cylinder, fixed body, connecting pipe, pump body and piezoelectric ceramic vibrators. They are parallelly arranged on a soft pipe. When the alternative voltage with different phase angles are applied to said piezoelectric ceramic vibrators, they are axially deformed in concave-convex mode, which apply a reciprocating force to said fluid in cavities and the slide heads to press the fluid in soft pipe to make it flow.
Description
Technical field
The invention belongs to field of mechanical technique, relate to the improvement of a kind of finger-type pump in the convection cell machinery subject and driving mode thereof.
Background technique
Finger-type pump has advantages such as the output fluid impact is little, fricton-tight friction than traditional rotary-type pump.Existing in the world finger-type pump generally adopts motor 11, bent axle 12, slide block 16 to constitute the finger pump of traditional form at present, sees Fig. 4.It constitutes: motor 11 drives isogonism distribution bent axle 12 and rotates, the bulb 14 that the rotation of axle 13 is twisted by connection handle and ball under directed 16 effects of sliding, moving up and down of the ball-and-socket 15 of drive finger handle and ball strand, with regard to the generating period to-and-fro motion, several 13, the bulb 14 of connection handle and ball strand, finger handle and the ball-and-socket 15 of ball strand and the directed 16 this mechanisms that formed of sliding are connected each dot and dash line place of bent axle 12, formation finger pump.Its working principle is: driven by motor isogonism distribution bent axle 12 rotates, make slide block 16 produce similar finger bullet piano keys type successively down by action, press the fluid in the flexible pipe, fluid is subjected to just producing and flowing from the pressing successively of slide block.
But the finger-type pump MECHANISM PRECISION height of this form, complex structure, regulation and control difficulty, and produce the magnetic line of force.This is to field vascular drug deliveries such as medical treatment, health care, health, the finger-type pump that has been widely used of transfusion and aspect such as outdoor first aid has produced great restriction and adverse effect at regular time and quantity.
Summary of the invention
The object of the invention is to provide a kind of simple in structure, finger-type piezoelectric ceramic pump that regulation and control easily, do not produce the magnetic line of force.
Technological scheme of the present invention is seen shown in Fig. 1-3.It includes the hydraulic plunger mechanism of slide head 1 and cylinder body 2 formations, be characterised in that: this hydraulic plunger mechanism is connected with connecting tube 4 by fixed body 3, another opening of connecting tube 4 connects the outlet of the pump housing 6, be connected and fixed piezoelectric ceramic vibrator 7 with routine in the pump housing 6, be encapsulated into incompressibility fluid sealed cavity (as hydraulic oil) in forming by 1,2,3,4,6,7 like this, this sealed cavity is placed on the flexible pipe 9, and hard thing 10 is leveled up in 9 times placements.
This finger-type pump is characterized in that adopting n to be placed on side by side on 9 by 1,2,3,4,6,7 sealed cavities of forming, 10＞n＞2 wherein, and adopt fixing the overlapping of 1 cover to level up hard thing 10 at least with plain cushion 8,1.
The piezoelectric ceramic vibrator 7 that adopts in this finger-type is stickup compound bodys of piezoelectric ceramic and metal vibration macrophotograph, and 7-1 is a piezoelectric ceramic, and 7-2 is a tinsel, and 7-3 is a binder.Make piezoelectric ceramic vibrator 7 with the compound body after piezoelectric ceramic 7-1 and the metal vibration macrophotograph 7-2 stickup.
The finger-type pump driving mode is characterised in that among the present invention: 1. n is applied the alternating voltage at out of phase angle by the piezoelectric ceramic vibrator 7 in 1,2,3,4,6,7 sealed cavities of forming, its applying method employing formula is:
V
n[V
n＝ASin(ωt+φ
nN)]，φ
nN＝(2π/n)(N-1)，N＝1，2…n，
φ
NNBe the phase angle, n is the sum of sealed cavity, and N is the ordinal number of concrete which sealed cavity, and ω is an angular frequency, and t is the time, and A is a maximum amplitude; 2. when successively the piezoelectric ceramic vibrator 7 in this n sealed cavity being applied the alternating voltage at out of phase angle, n piezoelectric ceramic vibrator 7 back and forth convex-concave distortion vertically, piezoelectric ceramic vibrator 7 just imposes reciprocating force to the chamber inner fluid, the reciprocating piston motion takes place in slide head 1, fluid in 9 is subjected to from the pressing successively of n slide head 1, just produces and flows.
As follows shown in working principle Fig. 2 of the finger-type piezoelectric ceramic pump that constitutes: to first as shown in Figure 1 mechanism apply alternating voltage V
1[V
1=ASin (ω t+ φ
1N)], to second as shown in Figure 1 mechanism apply alternating voltage V
2[V
2=ASin (ω t+ φ
2N)] ... the individual mechanism as shown in Figure 1 of n is applied alternating voltage V
n[V
n=ASin (ω t+ φ
NN)], φ
NN=(2 π/n) (N-1), N=1,2 ... n, here, φ
NNBe the phase angle, n is the sum of mechanism shown in Figure 1, and N is concrete which individual ordinal number of mechanism as shown in Figure 1, and ω is an angular frequency, and t is the time, and A is a maximum amplitude.
The alternating voltage that in this driving mode all mechanisms is applied is the equally spaced phase angle that changed, and in fact to the interval of piezoelectric ceramic vibrator 7 power that applies in n the sealed cavity, can adopt the method at any general change phase angle to implement.
The present invention has utilized the inverse piezoelectric effect of piezoelectric constant dexterously, and making originally, the complex structure finger-type pump becomes simple.Because the power source of piezoelectric constant does not produce magnetic field, so when this pump is used in fields such as medical treatment, can omit anti-magnetic system, this pump can come regulating flow and pressure with the mode that changes voltage simultaneously, makes control directly and conveniently.
Description of drawings:
Fig. 1: structural representation of the present invention, 5, bolt;
Fig. 2: fundamental diagram of the present invention;
Fig. 3: piezoelectric ceramic vibrator structural representation;
Fig. 4: prior art structural representation.
Embodiment
System of the present invention is joined referring to Fig. 1-3.Slide head 1, cylinder body 2, fixed body 3, the pump housing 6, fixing material with plain cushion 8 are non-ferrous metal, as: copper etc.Connecting tube 4, piezoelectric ceramic are standardized product.It is 50mm that piezoelectric ceramic vibrator 7 adopts diameters, and thickness is the round copper sheet of 0.1mm, forms through bonding, slide head 1, cylinder body 2, fixed body 3, the pump housing 6, fixes and adds product with plain cushion 8 for machine.The encapsulation fluid is a hydraulic oil in the cavity.
Realize that the phase angle change has numerous methods, only lifting here and applying electric capacity is example.The slide head 1 of all like this mechanisms as shown in Figure 1 will produce similar finger bullet piano keys type successively down by action, press the fluid in the flexible pipe, fluid is subjected to just producing and flowing from the pressing successively of slide block.
If the area of slide head 1 is made as S
1, amount of movement is made as L
1, the area of electroceramic oscillator 7 is made as S
2, average amount of movement is made as L
2, so,
The present invention has utilized the Pascal's theorem in the fluid mechanics, makes the displacement amount that microvibration produced of piezoelectric ceramic vibrator 7, is amplified at slide head 1.The motion equation of slide head 1 is:
x
n＝L
1nSin(ωt+φ
nN) (2)
Claims (5)
1, a kind of finger-type pump, include the hydraulic plunger mechanism that slide head (1) and cylinder body (2) constitute, the invention is characterized in: this hydraulic plunger mechanism is connected by the same connecting tube of fixed body (3) (4), another opening of connecting tube (4) connects the outlet of the pump housing (6), be connected and fixed piezoelectric ceramic vibrator (7) with routine in the pump housing (6), be encapsulated into incompressibility fluid sealed cavity in forming by (1), (2), (3), (4), (6), (7) like this, this sealed cavity is placed on the flexible pipe (9), and (9) are placed down and leveled up hard thing (10).
2, a kind of finger-type pump according to claim 1, it is characterized in that adopting n the sealed cavity of forming by (1), (2), (3), (4), (6), (7) to be placed on side by side on (9), 10＞n＞2 wherein, and adopting 1 cover fixing at least with plain cushion (8), 1 cover is leveled up hard thing (10).
3, a kind of finger-type pump according to claim 1 is characterized in that it being to adopt the compound body after piezoelectric ceramic 7-1 and metal vibration macrophotograph 7-2 paste to make piezoelectric ceramic vibrator (7).
4, a kind of finger-type pump driving mode, it is characterized in that: 1. the piezoelectric ceramic vibrator (7) in the sealed cavity that n is made up of (1), (2), (3), (4), (6), (7) applies the alternating voltage at out of phase angle, and its applying method employing formula is: V
n[V
n=ASin (ω t+ φ
NN)], φ
NN=(2 π/n) (N-1), N=1,2 ... n,
φ
NNBe the phase angle, n is the sum of sealed cavity, and N is the ordinal number of concrete which sealed cavity, and ω is an angular frequency, and t is the time, and A is a maximum amplitude; 2. when successively the piezoelectric ceramic vibrator (7) in this n sealed cavity being applied the alternating voltage at out of phase angle, n piezoelectric ceramic vibrator (7) back and forth convex-concave distortion vertically, piezoelectric ceramic vibrator (7) just imposes reciprocating force to the chamber inner fluid, the reciprocating piston motion takes place in slide head (1), (9) fluid in is subjected to from the pressing successively of n slide head (1), just produces and flows.
5, a kind of finger-type pump driving mode according to claim 1, it is characterized in that, to the interval of piezoelectric ceramic vibrator (7) power that applies in n the sealed cavity, be the equally spaced phase angle that changed, can adopt the method at any general change phase angle to implement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021172609A CN1139725C (en) | 2002-04-23 | 2002-04-23 | Finger-type pump and its drive mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021172609A CN1139725C (en) | 2002-04-23 | 2002-04-23 | Finger-type pump and its drive mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1373294A true CN1373294A (en) | 2002-10-09 |
| CN1139725C CN1139725C (en) | 2004-02-25 |
Family
ID=4744368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021172609A Expired - Fee Related CN1139725C (en) | 2002-04-23 | 2002-04-23 | Finger-type pump and its drive mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1139725C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174933A (en) * | 2011-03-11 | 2011-09-07 | 北京华科仪电力仪表研究所 | Automatic conveyer |
| CN107440681A (en) * | 2006-02-09 | 2017-12-08 | 德卡产品有限公司 | For distributing the device of fluid |
| CN108403640A (en) * | 2018-04-27 | 2018-08-17 | 重庆医药高等专科学校 | The film forming rapid drying device of polyene taxol liposome |
| WO2019217534A1 (en) * | 2018-05-08 | 2019-11-14 | Carefusion 303, Inc. | Peristaltic pump of an infusion system for delivery of small volumes of fluid |
| US12029878B2 (en) | 2020-11-13 | 2024-07-09 | Carefusion 303, Inc. | Peristaltic pump of an infusion system for delivery of small volumes of fluid |
-
2002
- 2002-04-23 CN CNB021172609A patent/CN1139725C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107440681A (en) * | 2006-02-09 | 2017-12-08 | 德卡产品有限公司 | For distributing the device of fluid |
| CN102174933A (en) * | 2011-03-11 | 2011-09-07 | 北京华科仪电力仪表研究所 | Automatic conveyer |
| CN108403640A (en) * | 2018-04-27 | 2018-08-17 | 重庆医药高等专科学校 | The film forming rapid drying device of polyene taxol liposome |
| CN108403640B (en) * | 2018-04-27 | 2020-04-10 | 重庆医药高等专科学校 | Film-forming quick drying device for polyene paclitaxel liposome |
| WO2019217534A1 (en) * | 2018-05-08 | 2019-11-14 | Carefusion 303, Inc. | Peristaltic pump of an infusion system for delivery of small volumes of fluid |
| US10850026B2 (en) | 2018-05-08 | 2020-12-01 | Carefusion Corporation | Peristaltic pump of an infusion system for delivery of small volumes of fluid |
| CN112074312A (en) * | 2018-05-08 | 2020-12-11 | 康尔福盛303公司 | Peristaltic pump for an infusion system for delivering small volumes of fluid |
| AU2019265570B2 (en) * | 2018-05-08 | 2021-05-27 | Carefusion 303, Inc. | Peristaltic pump of an infusion system for delivery of small volumes of fluid |
| CN112074312B (en) * | 2018-05-08 | 2022-11-01 | 康尔福盛303公司 | Peristaltic pump for an infusion system for delivering small volumes of fluid |
| US12029878B2 (en) | 2020-11-13 | 2024-07-09 | Carefusion 303, Inc. | Peristaltic pump of an infusion system for delivery of small volumes of fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1139725C (en) | 2004-02-25 |
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