EP0786596B1 - Peristaltische Pumpe - Google Patents

Peristaltische Pumpe Download PDF

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Publication number
EP0786596B1
EP0786596B1 EP19970460007 EP97460007A EP0786596B1 EP 0786596 B1 EP0786596 B1 EP 0786596B1 EP 19970460007 EP19970460007 EP 19970460007 EP 97460007 A EP97460007 A EP 97460007A EP 0786596 B1 EP0786596 B1 EP 0786596B1
Authority
EP
European Patent Office
Prior art keywords
cam
rotor
peristaltic pump
lever
pipes
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
EP19970460007
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English (en)
French (fr)
Other versions
EP0786596A1 (de
Inventor
Bernard Leilde
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.)
Institut Francais de Recherche pour lExploitation de la Mer (IFREMER)
Original Assignee
Institut Francais de Recherche pour lExploitation de la Mer (IFREMER)
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 Institut Francais de Recherche pour lExploitation de la Mer (IFREMER) filed Critical Institut Francais de Recherche pour lExploitation de la Mer (IFREMER)
Publication of EP0786596A1 publication Critical patent/EP0786596A1/de
Application granted granted Critical
Publication of EP0786596B1 publication Critical patent/EP0786596B1/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
    • 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
    • F04B43/1292—Pumps specially adapted for several tubular flexible members
    • 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

Definitions

  • the present invention relates to the field of peristaltic pumps in general.
  • These pumps are based on the principle of crushing a flexible pipe by means of successive rollers or rollers arranged at the periphery of a rotor, or by means of the rotor itself acting by its peripheral surface which then forms a succession of cams.
  • They include a number qualities that make them particularly suitable for applications in dosing systems or analytical, fine chemistry, pharmacy, biology, etc. Among these qualities, the following are particularly remarkable: flexibility of use, reliability, the need for almost zero maintenance, ease of cleaning, flow accuracy over a wide range.
  • Peristaltic pumps have a serious drawback in that when the hose is stopped remains overwritten. Under these conditions, the flexible hose will more or less quickly keep a deformation which will distort the flow.
  • a known solution consists, as illustrated in document US-A-4 604 038, to release the hose flexible outside operating periods, by manual spacing of a cam with which cooperate the rollers to crush the pipe. Each time pump running, it must be reset beforehand manually the cam.
  • the invention was achieved with the triple aim of make the release function possible remotely and putting the hose back into working condition flexible of a peristaltic pump, automate this function in such a way that it is systematically implementation for each stop and restart of the pump, and to design a simple device and reliable.
  • the invention therefore consists of a pump peristaltic comprising at least one flexible hose engaged around a rotor whose periphery ensures crushing said pipe against a cam corresponding, characterized in that said cam has a pivoting ability allowing its surface active is moved away from the periphery of said rotor to ensuring the relaxation of said flexible pipe, and in that positioning of said cam in a state of functioning and its release are ensured by a control mechanism comprising a clutch with which friction clutch is mounted on a pinion driven at the same time as said rotor, such so that if the rotor turns in the direction of pump operation, the cam is brought in operating position and maintained in this position by a force resulting at least mainly of the resistant torque of the clutch, and that if the rotor turns in the other direction, the cam is released by said mechanism, so that the flexible hose is released.
  • said cam is pivotally driven towards the operating position by a lever itself mounted pivoting between two positions defined by stops.
  • the support between said lever and the cam is done through an additional element adjustable, which in particular allows adaptation to the same location in the same pipe material different diameters. In a simple form, it is of a finger mounted with adjustment capacity in said the sink.
  • a single lever can control a plurality of cams each associated with a flexible tube.
  • the pump has two groups of hoses flexible mounted on the same rotor, both groups operating in opposite directions, a arrangement according to the invention for each group, of so that when the pipes of one are released, the pipes of the other are in the constrained state and vice versa.
  • Figs. 1 and 2 illustrate the general principle of the invention. They represent a peristaltic pump 1, the main elements of which are mounted on a planar support 2. It is first of all a rotor 3 of general cylindrical shape, the periphery of which a regular succession of identical rollers 30 axially oriented and mounted to rotate freely on themselves. The rotor 3 is integral in rotation with a shaft 4 driven by a motor, not shown.
  • a flexible pipe 5 partially surrounds the rotor 3, in contact with the rollers 30. Beyond its part 50 surrounding the rotor 3, its inlet and outlet strands refoulement, respectively 51 and 52, are engaged in retaining blocks 6 fixed on the support 2.
  • the part 50 of the pipe 5 in contact with the rotor 3 is externally bordered by the cylindrical surface 70 a cam 7 facing the rollers 30.
  • the cam 7 is articulated around an axis 8 mounted perpendicularly on the support 2. Being brought closer to the rollers 30, it constrains them the pipe 5 along the length of its part 50, such so that at the right of each roller 30, the pipe 5 is crushed on itself. Pipe 5 is released by pivoting of the cam 7 opposite the rotor 3.
  • the cam 7 is driven in pivoting by means of a mechanism comprising a friction clutch mounted on a pinion driven in rotation by the shaft 4.
  • the pinion designated by the reference 9 is mounted on the axis 8 of articulation of the cam 7. It is meshed with a pinion 10 integral in rotation with the shaft 4.
  • the pinion 9 is coupled via a friction clutch 11 with a crank washer 12.
  • the clutch at friction 11 advantageously consists of one or several wavy washers interposed on axis 8 between the pinion 9 and the crank washer 12, the friction adjustment can be effected by means of of a nut-lock nut assembly 13.
  • the washer-crank 12 is preferably a cap washer.
  • the crank washer 12 is connected by through a link 14 to a lever 15 acting on the cam 7. More precisely, the lever 15 is placed behind the cam 7 relative to the rotor 3, to cooperate with the back 71 thereof. Leverage 15 is articulated around an axis 16 near the end of the cam 7 distant from its hinge axis 8. From preferably, the support between the lever 15 and the cam 7 is made by means of a finger 17 adjustable in length, integral with lever 15. This is in practice a screw passing through the lever 15.
  • the lever 15 has a pivoting ability around axis 16, limited in both directions by a system abutment 18, which here consists of an integral finger lever 15 engaged in a cavity of support 2, in such a way that it can only move between the opposite edges of it.
  • the link through the connecting rod 14 between the lever 15 and the crank washer 12 is such that at the end of the lever 15 in either of its extreme positions of pivoting by the crank washer 12, there is blockage in rotation thereof as long as the direction of rotation of the pinion 9 remains unchanged.
  • the lever 15 is brought into the pivoting position limited to the opposite of rotor 3 by rotation of the crank washer 12 counterclockwise.
  • the joint 120 between the link 14 and the crank washer 12 is slightly below the three o'clock position on the latter while the crank arm and the connecting rod 14 make an angle less than 180 ° open towards the top. Therefore, joint 120 cannot go further to the three o'clock position, so that the crank washer 12 locks in rotation, the clutch 11 then sliding while the pinion 9 continues to rotate counterclockwise.
  • articulation 120 is in the vicinity of the time position of six o'clock on the crank washer 12. It cannot move past it clockwise so that when this position is reached, the crank washer 12 locks in rotation, clutch 11 therefore sliding as long as the pinion 9 continues to turn in the same direction, i.e. the direction schedule.
  • the joint 120 moves immediately from one to the other of its positions limits.
  • the pump according to the invention is in the state shown in FIG. 1.
  • the lever 15 is in its extreme pivoting position opposite the rotor 3, so that the released cam 7 is moved away from the rollers 30.
  • the pipe 5 is not constrained and so it has a normal section on its entire length.
  • Fig. 3 shows a pump according to the invention operating in exactly the same way as that has been described previously. It differs from this in what it is multi-channel, namely that instead of a single pipe 5, it includes several which are mounted in parallel around the rotor 3. On each pipe 5, corresponds to a particular cam 7a to 7g, the cams 7a to 7g being identical and articulated on the same axis 8. All the cams 7a to 7g are operated by a single lever 15, however provided with a finger setting 17 for each cam. So we can settle individually each cam, or even neutralize a or several channels by total retraction in the lever 15 of the corresponding finger (s) 17. It will be noted that a simpler version may have only one cam for all pipes.
  • the pump shown in Fig. 4 works so bidirectional. Like that of FIG. 3, she is multi-channel and with each pipe 5 is associated a cam particular 7h to 7m. Pipes 5 and cams 7h to 7m form two groups adjacent to each of which are assigned on its free side a lever 15a, 15b and its training system which are as above described. Both drive systems work in opposition, so that for a direction of rotation of the rotor 3, one group of pipes is constrained and the other released, and that for the opposite direction of rotation, the situation is reversed. Of course, we can have here again a means of adjustment specific to each cam, as in a simplified version, there may have only one cam per pipe group 5, as there can also be only one hose 5 per group.
  • the pump stop command may be programmed in such a way that the two groups pipes are released at a standstill in turn.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Claims (10)

  1. Peristaltische Pumpe, die mindestens einen biegsamen Schlauch (5) aufweist, der um einen Rotor (3) herum angeordnet ist, dessen Umfang (30) das Zusammendrücken dieses Schlauchs (5) gegen eine entsprechende Nocke (7) gewährleistet, wobei die Nocke (7) ein Schwenkvermögen hat, das es ermöglicht, daß ihre aktive Fläche (70) vom Umfang (30) des Rotors (3) entfernt wird, um das Entspannen des biegsamen Schlauchs (5) zu gewährleisten, dadurch gekennzeichnet, daß die Positionierung dieser Nocke (7) in den Betriebszustand und ihr Freigeben von einem Steuermechanismus (9-15) gewährleistet werden, der eine Reibungskupplung (11) enthält, die auf ein Ritzel (9) montiert ist, das gleichzeitig mit dem Rotor (3) angetrieben wird, so daß, wenn der Rotor in Betriebsrichtung der Pumpe dreht, die Nocke in die Betriebsposition gebracht und in dieser Position durch eine Kraft gehalten wird, die zumindest hauptsächlich aus dem Widerstandsmoment der Kupplung (11) entsteht, und daß, wenn der Rotor in die andere Richtung dreht, die Nocke von diesem Mechanismus freigegeben wird, so daß der biegsame Schlauch (5) entspannt wird.
  2. Peristaltische Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß der Steuermechanismus einen Hebel (15) aufweist, der hinter der Nocke (7) angeordnet ist, um in Höhe des Rückens (71) dieser Nocke zu wirken, wobei dieser Hebel (15) um eine Achse (16) gelenkig angeordnet ist, die sich nahe dem Ende der Nocke (7) befindet, das von ihrer Schwenkachse (8) entfernt ist, ein Schwenkvermögen zwischen zwei von einem Anschlagsystem (18) definierten Positionen hat und über einen Schwingarm (14) mit einer Kurbelscheibe (12) verbunden ist, die zur Achse (8) axial ausgerichtet und mit dem Ritzel (9) über die Reibungskupplung (11) gekoppelt ist.
  3. Peristaltische Pumpe nach Anspruch 2, dadurch gekennzeichnet, daß der Druck des Hebels (15) auf den Rücken (71) der Nocke (7) über ein zusätzliches, einstellbares Element (17) erfolgt, was es insbesondere ermöglicht, an der gleichen Stelle die Anpassung von Schläuchen (5) verschiedener Durchmesser durchzuführen.
  4. Peristaltische Pumpe nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß eine Feder (19) vorgesehen ist, die dazu beiträgt, die Druckkraft des Hebels (15) gegen die Nocke (7) zu erzeugen, wenn diese sich in der Betriebsstellung befindet.
  5. Peristaltische Pumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sie eine Vielzahl von Schläuchen (5), die parallel um den Rotor (3) montiert sind, mindestens eine Nocke (7) und einen einzigen Steuermechanismus (9-15) aufweist.
  6. Peristaltische Pumpe nach Anspruch 5, dadurch gekennzeichnet, daß sie ebensoviele Nocken (7a-7g) wie Schläuche (5) aufweist, die je einem Schlauch (5) zugeordnet sind.
  7. Peristaltische Pumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sie zwei Gruppen von Schläuchen (5) aufweist, die parallel um den Rotor (3) montiert sind, wobei jede Gruppe mindestens einen Schlauch (5) aufweist, daß jeder Gruppe mindestens eine Nocke (7) und ein Steuermechanismus (9-15) zugeordnet sind, wobei die beiden Steuermechanismen (9-15) gegenläufig arbeiten, so daß, wenn eine Gruppe von Schläuchen (5) kontrahiert ist, die andere Gruppe entspannt ist.
  8. Peristaltische Pumpe nach Anspruch 7, dadurch gekennzeichnet, daß sie ebensoviele Nocken (7h-7m) wie Schläuche (5) aufweist.
  9. Peristaltische Pumpe nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß ihre Stillstand-Steuerung so programmiert ist, daß für die Stillstand-Perioden die beiden Gruppen von Schläuchen (5) jeweils einzeln entspannt werden.
  10. Peristaltische Pumpe nach einem der Ansprüche 5 bis 9, die selbst von Anspruch 3 abhängen, dadurch gekennzeichnet, daß jeder Hebel (15; 15a, 15b) für jede der ihm zugeordneten Nocken einen Einstellfinger aufweist.
EP19970460007 1996-01-26 1997-01-23 Peristaltische Pumpe Expired - Lifetime EP0786596B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9601195 1996-01-26
FR9601195A FR2744176B1 (fr) 1996-01-26 1996-01-26 Pompe peristaltique

Publications (2)

Publication Number Publication Date
EP0786596A1 EP0786596A1 (de) 1997-07-30
EP0786596B1 true EP0786596B1 (de) 1998-12-23

Family

ID=9488711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970460007 Expired - Lifetime EP0786596B1 (de) 1996-01-26 1997-01-23 Peristaltische Pumpe

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EP (1) EP0786596B1 (de)
DE (1) DE69700070T2 (de)
DK (1) DK0786596T3 (de)
FR (1) FR2744176B1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20217483U1 (de) * 2002-11-13 2003-10-09 Lang Apparatebau Gmbh, 83313 Siegsdorf Schlauchquetschpumpe
US7300264B2 (en) 2003-09-08 2007-11-27 Hewlett-Packard Development, L.P. Peristaltic pump
ES2295991T3 (es) 2005-03-10 2008-04-16 Lifebridge Medizintechnik Ag Bomba peristaltica.
US8550310B2 (en) * 2007-12-05 2013-10-08 Bunn-O-Matic Corporation Peristaltic pump
AU2013364077C1 (en) 2012-12-21 2018-03-22 Alcon Inc. Cassette clamp mechanism
CN104895779B (zh) * 2015-06-09 2017-11-07 常州普瑞流体技术有限公司 一种不锈钢蠕动泵泵头
DE202016000790U1 (de) 2016-02-08 2016-03-18 Ralf Hannibal Schlauchquetschpumpe mit einem Schwenkantrieb und einer Rohrweiche
CN110925176B (zh) * 2019-12-26 2024-04-26 湖南执先科技有限公司 一种双滚轮旋转式高精度蠕动泵
CN111156156B (zh) * 2020-01-20 2024-12-24 保定申辰泵业有限公司 旋转驱动结构及具有上压块开闭驱动结构的蠕动泵泵头
WO2026083353A1 (en) * 2024-10-18 2026-04-23 Cellares Corporation Systems, devices, and methods for fluid control in a cell processing system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832096A (en) * 1971-03-03 1974-08-27 Buchler Instr Multitube peristaltic pump with individual programming control
GB2107797B (en) * 1981-10-20 1985-02-06 Rudolph Berelson Peristaltic pump
US4604038A (en) * 1985-03-08 1986-08-05 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Remotely operable peristaltic pump
DE3827722C1 (de) * 1988-08-16 1989-12-07 Fresenius Ag, 6380 Bad Homburg, De
JP3392493B2 (ja) * 1994-02-01 2003-03-31 文人 小松 チューブポンプ

Also Published As

Publication number Publication date
DE69700070T2 (de) 1999-05-20
EP0786596A1 (de) 1997-07-30
DE69700070D1 (de) 1999-02-04
DK0786596T3 (da) 1999-08-23
FR2744176A1 (fr) 1997-08-01
FR2744176B1 (fr) 1998-04-10

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