CN1139725C - Finger-type pump and its drive mode - Google Patents
Finger-type pump and its drive mode Download PDFInfo
- Publication number
- CN1139725C CN1139725C CNB021172609A CN02117260A CN1139725C CN 1139725 C CN1139725 C CN 1139725C CN B021172609 A CNB021172609 A CN B021172609A CN 02117260 A CN02117260 A CN 02117260A CN 1139725 C CN1139725 C CN 1139725C
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- CN
- China
- Prior art keywords
- piezoelectric ceramic
- finger
- ceramic vibrator
- pump
- slide head
- 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 36
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 6
- 238000007789 sealing Methods 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
- 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
- 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
- 239000010720 hydraulic oil Substances 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
- 238000003466 welding Methods 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The present invention provides a finger-type pump and a driving mode thereof, which relates to the subject of fluid machinery. The finger-type pump comprises a hydraulic plunger mechanism composed of a slide head 1 and a cylinder body 2, wherein the hydraulic plunger mechanism is connected with a connecting tube 4 by a fixed body 3, the other opening of the connecting tube 4 is connected with an outlet of a pump body 6, and a piezoelectric ceramic vibrator 7 is fixed in the pump body 6 by conventional connection. Therefore, the slide head 1, the cylinder body 2, the fixed body 3, the connecting tube 4, the pump body 6 and the piezoelectric ceramic vibrator 7 are formed into an enclosed cavity body in which incompressible fluid is sealed, n mechanisms are arranged on a flexible tube 9 in parallel, and a leveling-up hard object 10 is padded under the flexible tube 9. When alternating voltage of different phase angles is applied to piezoelectric ceramic vibrators 7 in the n sealing cavity bodies, the n piezoelectric ceramic vibrators 7 deform in a convex and concave mode forwards and backwards along the axial direction so that reciprocating force is applied to fluid in the cavity bodies, the slide head 1 makes a piston motion forwards and backwards, and fluid in the flexible tube 9 is pressed by n slide heads 1 to flow. The finger-type pump has the advantage of simple structure. When the finger-type pump is applied to the medical field, etc., an anti-magnetic system can be omitted, and simultaneously, the pump can be controlled directly and conveniently.
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, the invention is characterized in: the hydraulic plunger mechanism that constitutes by slide head 1 and cylinder body 2, adopt the method for conventional mechanical by fixed body 3, as: bolt or welding method connect an end of connecting tube 4, the other end of connecting tube 4 inserts from the outlet of the pump housing 6 and connects the pump housing 6, adopt the fixing plain cushion 8 of using that the pump housing 6 is connected with piezoelectric ceramic vibrator 7, like this by slide head 1, cylinder body 2, connecting tube 4, in having formed, the pump housing 6 and piezoelectric ceramic vibrator 7 be encapsulated into incompressibility fluid sealed cavity, this sealed cavity is placed on the flexible pipe 9, and flexible pipe is placed for 9 times and leveled up hard thing 10; And adopted n such sealed cavity to be placed on side by side on 9,10＞n＞2 wherein.
At least adopt 1 cover to connect the fixing of the pump housing 6 and piezoelectric ceramic vibrator 7 among the present invention with plain cushion 8; At least adopt 1 cover to level up hard thing 10 and be placed on flexible pipe 9 times.
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＝1，2Λn，
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 Λ 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, just equally spaced changed the phase angle, in fact to the interval of piezoelectric ceramic vibrator 7 power that applies in n the sealed cavity, can adopt the method at general change phase angle, implement as the method for coilloading or electric capacity.
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.
Specifically be connected to: the hydraulic plunger mechanism that constitutes by slide head 1 and cylinder body 2, adopt the method for conventional mechanical to connect an end of connecting tube 4 by fixed body 3, the other end of connecting tube 4 inserts from the outlet of the pump housing 6 and connects the pump housing 6, adopt the fixing plain cushion 8 of using of 1 cover that the pump housing 6 is connected with piezoelectric ceramic vibrator 7, be encapsulated into incompressibility fluid sealed cavity in having formed by slide head 1, cylinder body 2, connecting tube 4, the pump housing 6 and piezoelectric ceramic vibrator 7 like this, this sealed cavity is placed on the flexible pipe 9, and flexible pipe is placed 1 cover for 9 times and leveled up hard thing 10; And adopted n such sealed cavity to be placed on side by side on 9, wherein can select 5,9 or 3 respectively according to the n needs.
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: by the hydraulic plunger mechanism of slide head (1) with cylinder body (2) formation, adopt the method for conventional mechanical to connect an end of connecting tube (4) by fixed body (3), the other end of connecting tube (4) inserts from the outlet of the pump housing (6) and connects the pump housing (6), adopt the fixing plain cushion (8) of using that the pump housing (6) is connected with piezoelectric ceramic vibrator (7), like this by slide head (1), cylinder body (2), connecting tube (4), the pump housing (6) and piezoelectric ceramic vibrator (7) are encapsulated into incompressibility fluid sealed cavity in having formed, this sealed cavity is placed on the flexible pipe (9), and flexible pipe (9) is placed down and leveled up hard thing (10); And adopted n such sealed cavity to be placed on side by side on the flexible pipe (9), 10＞n＞2 wherein.
2, a kind of finger-type pump according to claim 1 is characterized in that, adopts 1 cover to connect the fixing with plain cushion (8) of the pump housing (6) and piezoelectric ceramic vibrator (7) at least; At least adopting 1 cover to level up hard thing (10) is placed under the flexible pipe (9).
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) are pasted 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 slide head (1), cylinder body (2), fixed body (3), connecting tube (4), the pump housing (6), piezoelectric ceramic vibrator (7) applies the alternating voltage at out of phase angle, and its applying method employing formula is:
V
n[V
n＝ASin(ωt+φ
nN)]，φ
nN＝(2π/n)(N-1)，N＝1，2Λn，
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, reciprocating piston takes place and props up in slide head (1), fluid in the flexible pipe (9) 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 4, it is characterized in that, interval to piezoelectric ceramic vibrator (7) power that applies in n the sealed cavity, be equally spaced to have changed the phase angle, can adopt the method at general change phase angle, implement as the method for coilloading or electric capacity.
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 CN1373294A (en) | 2002-10-09 |
| CN1139725C true 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) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101405043B (en) * | 2006-02-09 | 2012-01-04 | 德卡产品有限公司 | Pumping fluid delivery systems and methods using force application assembly |
| CN102174933B (en) * | 2011-03-11 | 2013-03-06 | 北京华科仪电力仪表研究所 | Automatic conveyer |
| 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 |
| US10850026B2 (en) * | 2018-05-08 | 2020-12-01 | Carefusion Corporation | 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
Also Published As
| Publication number | Publication date |
|---|---|
| CN1373294A (en) | 2002-10-09 |
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