EP0173075B1 - Schlauchpumpe - Google Patents

Schlauchpumpe Download PDF

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Publication number
EP0173075B1
EP0173075B1 EP85109278A EP85109278A EP0173075B1 EP 0173075 B1 EP0173075 B1 EP 0173075B1 EP 85109278 A EP85109278 A EP 85109278A EP 85109278 A EP85109278 A EP 85109278A EP 0173075 B1 EP0173075 B1 EP 0173075B1
Authority
EP
European Patent Office
Prior art keywords
plate member
peristaltic pump
flexible tubing
spring
arm
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 - Lifetime
Application number
EP85109278A
Other languages
English (en)
French (fr)
Other versions
EP0173075A3 (en
EP0173075A2 (de
Inventor
Edward H. Kidera
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Abbott Laboratories
Original Assignee
Abbott Laboratories
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Abbott Laboratories filed Critical Abbott Laboratories
Publication of EP0173075A2 publication Critical patent/EP0173075A2/de
Publication of EP0173075A3 publication Critical patent/EP0173075A3/en
Application granted granted Critical
Publication of EP0173075B1 publication Critical patent/EP0173075B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • 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
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • F04B43/1284—Means for pushing the backing-plate against the tubular flexible member
    • 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
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Definitions

  • This invention relatesto peristaltic pumps which utilize flexible tubing. More particularly this invention relates to an improved mounting system for the surface against which flexible tubing is compressed in a peristaltic pump.
  • peristaltic pumps The operability of peristaltic pumps depends on the successive and repetitive compression of a length of flexible tubing which causes the fluid within the length of flexible tubing to flow. Accuracy of fluid flow from a peristaltic pump can only be maintained if the amount of compression of the flexible tubing can be duplicated each time a new piece offlexible tubing is operatively engaged with a peristaltic pump head.
  • a vending machine for dispensing measured quantities of liquids wherein the liquid to be dispensed is stored in a container having a flexible tube outlet through which the liquid is delivered.
  • the flexible tube is engaged by a peristaltic pump comprising a pump head rotatable about an axis and having a plurality of pressure wheels, a plate member having an arcuate surface against which flexible tubing may be compressed by said pressure wheels, and means for causing relative positioning of said pump head and said plate member such that said pressure wheels cooperate with said arcuate surface for causing fluid flow by the successive and repetitive compression of a length 9f flexible tubing inserted therebetween, said axis of said pump head being located at a stationary position, and said means for causing relative positioning of said pump head and said plate member comprising a pivot member operatively associated with said plate member, and means for resiliently biasing said arcuate surface towards said stationary position of said axis through rotation of said plate member about said pivot member, to selectively position said plate
  • the present invention encompasses a floating compression surface for use witn a peristaltic pump.
  • the floating compression surface is biased into position with respect to the pump rotor and against the flexible tubing so that it applies a constant force on the flexible tubing as the pump rotor turns.
  • the surface against which the flexible tubing is compressed will rotate on a pivot mount. This rotation will allow the compression surface to respond to any irregularities in the pump rotor or in the flexible tubing. In this manner flexible tubing of varying sizes and durometers may be used with a single pump head without affecting pump accuracy.
  • the device of the present invention is a compression surface for use with a -peristaltic pump.
  • Peristaltic pumps typically include rollers which successively and repetitively compress flexible tubing in order to maintain flow of fluid through flexibletubing.
  • a surface In order forthe flexible tubing to be compressed a surface must be provided against which the rollers may compress the flexible tubing.
  • the pressure surface of the present invention includes a plate member which has an arcuate surface against which the flexible tubing is compressed.
  • the plate member is mounted on a pivot so that it may rotate with respect to the peristaltic pump head. Biasing means hold the plate member in operative engagement with the flexible tubing when the tubing is placed in operative engagement with the peristaltic pump head. In this manner the arcuate pressure surface floats on the flexible tubing while at the same time exerting a constant force against the flexible tubing for maintaining accuracy of fluid flow.
  • Pump 20 consists of four main parts; specifically tubing guide piece 12, flexible tubing 22, rotatable pump head 24 and pressure plate 10. As pump head 24 rotates, pressure wheels 26 contact flexible tubing 22 to repetitively and successively compress flexible tubing 22. Arcuate surface 11 of pressure plate 10 operatively engages flexible tubing 22 to provide a surface against which pressure wheels 26 may compress flexible tubing 22. If desired arcuate surface may be bordered by a fence 13 which acts to retain flexible tubing 22 in operative engagement with a pump head 24.
  • FIGURE 2 illustrates the mounting of pressure plate 10 with respect to pump head 24.
  • a rotatable pivot bar 14 extends through pressure plate 10. Pressure plate 10 is held in place on rotatable pivot bar 14 by set screw 36.
  • arm 44 is attached to the opposite end of pivot bar 14 is arm 44.
  • An electrical switch 30 may be placed on arm 44 to indicate the position of arm 44.
  • Spring 28 consists of a spring retainer 64, a coil portion 62, a straight portion 58 and a bent-over portion 56.
  • the action of straight portion 58 against cam finger 42 causes arm 44 to be biased in a downward manner. This downward biasing of arm 44 causes pump pressure plate 10 to remain in contact with and provide a surface for the compression of flexible tubing 22.
  • pressure plate 10 When it is desired to operatively engage flexible tubing 22 with pump head 24 to operate peristaltic pump 20 pressure plate 10 is moved out of the way as shown in FIGURE 4. As shown in FIGURE 1 flexible tubing 22 may now be threaded through tubing guide 12 and over pressure wheels 26. When flexible tubing 22 is properly in place pressure plate 10 may be moved back into position over flexible tubing 22 by manually grasping knob 16 and moving it into contact with flexible tubing 22. If desired an automatic spring return may be used. As can be best seen by comparing FIGURES 3 and 4 the moving of pressure plate 10 causes cam finger 42 to slide down straight portion 58 of spring 28. Electrical switch 30 will signal the position of the pressure head 10.
  • pressure surface 10 around rotatable peristaltic pump head 24 is allowed to rotate on the pivot bar 14 in response to any eccentricities in the rotating pump head or irregularities in the flexible tubing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Claims (8)

1. Schlauchpumpe, die einen Pumpenkopf (24), der um eine Achse (18) drehbar ist und eine Mehrzahl von Druckrädern (26) hat, ein Plattenteil (10), das eine gewölbte Fläche (11) hat, gegen die die flexible Schlauchleitung (22) mittels der Druckräder (26) zusammengedrückt werden kann, und eine Einrichtung aufweist, welche eine relative Positionierung des Pumpenkopfs (24) und des Plattenteils (10) derart bewirkt, daß die Druckräder (26) mit der gewölbten Fläche (11) zusammenarbeiten, um zu bewirken, daß ein Fluid durch das aufeinanderfolgende und wiederholte Zusammendrücken eines Längsstücks der flexiblen Schlauchleitung (22) die dazwischen eingeführt ist, strömt, wobei die Achse (18) des Pumpenkopfs sich an einer festen Stelle befindet, und die Einrichtung, welche eine relative Positionierung des Pumpenkopfs und des Plattenteils bewirkt, ein Schwenkteil (14) aufweist, das betriebsmäßig mit dem Plattenteil (10) verbunden ist, und eine Einrichtung (28) aufweist, die die gewölbte Fläche (11) federnd nachgiebig in Richtung auf die feste Stellung der Achse (18) durch das Drehen des Plattenteils (10) um das Schwenkteil (14) vorbelastet, um selektiv die Position des Plattenteils (10) bezüglich des Pumpenkopfs (24) und der Achse (18) zum Bewirken eines Betriebseingriffes der gewölbten Fläche (11) im Zusammenwirken mit einem Längsstück der flexiblen Schlauchleitung (22) zu positionieren, dadurch gekennzeichnet, daß die Schlauchpumpe ferner eine Halteeinrichtung (28, 42, 62, 64) aufweist, die betriebsmäßig mit dem Plattenteil (10) zum selektiven Festlegen des Plattenteils (10) in einer Offenstellung zugeordnet ist, daß die Halteeinrichtung einen Arm (44) mit wenigstens einem Nockenfinger (42) aufweist, der drehfest mit dem Plattenteil (10) verbunden ist und derart beschaffen und ausgelegt ist, daß er mit wenigstens einer Feder (28) zusammenarbeitet, und daß der Nockenfinger (42) derart beschaffen ist, daß er längs der Feder (28) bei der Schwenkbewegung des Plattenteils (10) und des Arms (24) gleitbeweglich ist.
2. Schlauchpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Halteeinrichtung wenigstens einen Nockenfinger (42) aufweist, der drehfest mit dem Plattenteil (10) verbunden ist und derart ausgelegt ist, daß er mit wenigstens einer Feder (28) zusammenarbeiten kann.
3. Schlauchpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Plattenteil (10) starr mit einem Schwenkglied (14) verbunden ist, das seinerseits starr mit einem Arm (44) verbunden ist so daß die Radialbewegung des Plattenteils (10) eine Radialbewegung des Arms (44) bewirkt.
4. Schlauchpumpe nach Anspruch 3, dadurch gekennzeichnet, daß der Arm (44) so beschaffen ist, daß er mit einer elektrischen Positionsanzeigeeinrichtung (30) zusammenarbeitet.
5. Schlauchpumpe nach Anspruch 1, dadurch gekennzeichnet, daß sie ferner eine Einrichtung (16) zum Bewegen des Plattenteils (10) von seiner Offenstellung zu einer Stellung aufweist, an der die gewölbte Fläche (11) mit den Druckrädern (26) zusammenarbeitet.
6. Schlauchpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Feder (28) wenigstens einen Windungsabschnitt (62), einen Halteabschnitt (64) an wenigstens einem geraden Abschnitt (58) und wenigstens einen umgebogenen Abschnitt (58) aufweist, wobei der Windungsabschnitt (62) und der Halteabschnitt (64) derart beschaffen und ausgelegt sind, daß sie den geraden Abschnitt (58) der Feder (28) in Richtung auf die Achse (18) vorbelasten.
7. Schlauchpumpe nach Anspruch 1, dadurch gekennzeichnet, daß der umgebogene Abschnitt (58) der Feder (28) derart ausgelegt ist, daß er mit dem Nockenfinger (42) zum Festhalten des Arms (44) und des Plattenteils (10) in der Offenstellung zusammenarbeiten kann.
8. Schlauchpumpe nach Anspruch 1 oder 5, dadurch gekennzeichnet, daß die gewölbte Fläche (11) des Plattenteils (10) durch wenigstens einen Begrenzungsrand (13) begrenzt wird, welcher derart ausgelegt ist, daß die flexible Schlauchleitung (22) in Betriebseingriff mit den Druckrädern festgehalten ist.
EP85109278A 1984-08-07 1985-07-25 Schlauchpumpe Expired - Lifetime EP0173075B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63859784A 1984-08-07 1984-08-07
US638597 1991-01-08

Publications (3)

Publication Number Publication Date
EP0173075A2 EP0173075A2 (de) 1986-03-05
EP0173075A3 EP0173075A3 (en) 1986-03-19
EP0173075B1 true EP0173075B1 (de) 1990-10-10

Family

ID=24560677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109278A Expired - Lifetime EP0173075B1 (de) 1984-08-07 1985-07-25 Schlauchpumpe

Country Status (6)

Country Link
EP (1) EP0173075B1 (de)
JP (1) JPH06103029B2 (de)
KR (1) KR940007757B1 (de)
AU (1) AU592760B2 (de)
CA (1) CA1258403A (de)
DE (1) DE3580074D1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5181842A (en) * 1990-06-15 1993-01-26 Sherwood Medical Company Peristaltic infusion device
US5147312A (en) * 1990-06-15 1992-09-15 Sherwood Medical Company Peristaltic infusion device drip chamber yoke
US5133650A (en) * 1990-06-15 1992-07-28 Sherwood Medical Company Infusion device rotor shield
US5057081A (en) * 1990-06-15 1991-10-15 Sherwood Medical Company Peristaltic infusion device
US5127908A (en) * 1990-06-15 1992-07-07 Sherwood Medical Company Peristaltic infusion device
US5158528A (en) * 1990-06-15 1992-10-27 Sherwood Medical Company Peristaltic infusion device and charger unit
KR100299269B1 (ko) * 1999-08-30 2001-09-22 황해웅 브레이딩 직조에 의한 혼합섬유 제조장치 및 방법
KR101454468B1 (ko) * 2013-11-21 2014-10-24 서해영 연동펌프를 이용한 토출력이 향상된 약제 분무기
US10519123B2 (en) * 2016-02-04 2019-12-31 Grasim Industries Limited Process for preparation of an aromatic N-glycidylamine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1562024A (de) * 1968-01-05 1969-04-04
GB1344825A (en) * 1971-05-19 1974-01-23 Vendaid Ltd Machines for dispensing measured quantities of liquids
US4165954A (en) * 1975-08-11 1979-08-28 Corning Glass Works Linear peristaltic pump having pivotal pump arm
JPS5565538U (de) * 1978-10-31 1980-05-06
DE2855634A1 (de) * 1978-12-22 1980-06-26 Ara Werk Kraemer Gmbh & Co Verfahren und vorrichtung zum pumpen, insbesondere dosieren, von pastoesen bis fluessigen massen mittels einer schlauchpumpe
US4493224A (en) * 1982-06-04 1985-01-15 Eaton Corporation Remote manual shifting mechanism

Also Published As

Publication number Publication date
AU592760B2 (en) 1990-01-25
JPS6143290A (ja) 1986-03-01
EP0173075A3 (en) 1986-03-19
AU4536885A (en) 1986-02-13
JPH06103029B2 (ja) 1994-12-14
CA1258403A (en) 1989-08-15
EP0173075A2 (de) 1986-03-05
KR860001954A (ko) 1986-03-24
KR940007757B1 (ko) 1994-08-24
DE3580074D1 (de) 1990-11-15

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