EP0786596A1 - Peristaltische Pumpe - Google Patents

Peristaltische Pumpe Download PDF

Info

Publication number: EP0786596A1
Authority: EP; European Patent Office
Prior art keywords: cam; rotor; peristaltic pump; lever; pipes
Prior art date: 1996-01-26
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

Application number

EP97460007A

Other languages

English (en)

French (fr)

Other versions

EP0786596B1 (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.)

1996-01-26

Filing date

1997-01-23

Publication date

1997-07-30

1997-01-23 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)

1997-07-30 Publication of EP0786596A1 publication Critical patent/EP0786596A1/de

1998-12-23 Application granted granted Critical

1998-12-23 Publication of EP0786596B1 publication Critical patent/EP0786596B1/de

2017-01-23 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

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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.
peristaltic pumps have a serious disadvantage in that when the hose is stopped, it remains crushed. Under these conditions, the flexible pipe will more or less quickly retain a permanent deformation which will distort the flow.
a known solution consists in releasing the flexible hose outside of the periods of operation, by manual spacing of a cam with which the rollers cooperate to crush the hose. Each time the pump is restarted, the cam must first be reset manually.
the invention was carried out with the triple aim of making it possible remotely the function of relaxation and return to operating condition of the flexible hose of a peristaltic pump, of automating this function in such a way that it is systematically implemented. works for each stop and restart of the pump, and to design a simple and reliable device.
Another sought-after goal has been to provide for this device to be easily adaptable to existing pump models.
the invention therefore consists of a peristaltic pump comprising at least one flexible pipe engaged around a rotor whose periphery ensures the crushing of said pipe against a corresponding cam, characterized in that said cam has a pivoting ability allowing its surface active is moved away from the periphery of said rotor to ensure the release of said flexible pipe, and in that the positioning of said cam in operating condition and its release are ensured by a control mechanism comprising a friction clutch, which friction clutch is mounted on a pinion driven at the same time as said rotor, so that if the rotor turns in the operating direction of the pump, the cam is brought into operating position and maintained in this position by a force resulting at least mainly from the resisting clutch torque, 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 pivoted to the operating position by a lever itself pivotally mounted between two positions defined by stops.
the support between said lever and the cam is made by means of an additional adjustable element, which in particular allows adaptation to the same location in the same material of pipes of different diameters. In a simple form, it is a finger mounted with adjustment capacity in said lever.
a single lever can control a plurality of cams each associated with a flexible tube.
the pump comprises two groups of flexible pipes mounted on the same rotor, the two groups working in opposite directions, an arrangement can be provided according to the invention for each group, so that when the pipes of one are released , the pipes of the other are in the constrained state of operation 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 flat support 2. It is first of all a rotor 3 of generally cylindrical shape, the periphery of which comprises a regular succession of identical rollers 30 oriented axially and freely mounted in rotation 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, 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 bordered externally by the cylindrical surface 70 of 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 with them the pipe 5 along the length of its part 50, so that at the right of each roller 30, the pipe 5 is crushed on itself.
the pipe 5 is released by pivoting of the cam 7 opposite the rotor 3.
the cam 7 is pivotally driven 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 friction clutch 11 advantageously consists of one or more wavy washers interposed on the axis 8 between the pinion 9 and the crank washer 12, the adjustment of the friction being able to be carried out by means of a nut assembly lock nut 13.
the crank washer 12 is preferably a clevis washer.
the crank washer 12 is connected by means of a connecting rod 14 to a lever 15 acting on the cam 7. More specifically, the lever 15 is placed behind the cam 7 relative to the rotor 3, to cooperate with the back 71 of it.
the lever 15 is articulated around an axis 16 close to the end of the cam 7 distant from its articulation 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 the lever 15. It is in practice a screw passing through the lever 15.
the lever 15 has a pivoting ability about the axis 16, limited in both directions by a stop system 18, which here consists of a finger secured to the lever 15 engaged in a cavity of the support 2, so that it can only move between the opposite edges of it.
a stop system 18 which here consists of a finger secured to the lever 15 engaged in a cavity of the support 2, so that it can only move between the opposite edges of it.
connection via the link 14 between the lever 15 and the crank washer 12 is such that at the end of bringing the lever 15 into one or other of its extreme positions of pivoting by the washer-crank 12, there is locking in rotation thereof as the direction of rotation of the pinion 9 remains unchanged.
the lever 15 is brought into the limit pivoting position opposite the rotor 3 by rotation of the washer-crank 12 counterclockwise.
the articulation 120 between the link 14 and the crank washer 12 is slightly below the three o'clock hourly position on the latter while the crank arm and the link 14 make an angle less than 180 ° open up. Consequently, the articulation 120 cannot go further towards 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. .
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 spaced from the rollers 30. Between these and the cam 7, the pipe 5 is not constrained and therefore it has a normal section over its entire length.
the pump stop command causes the motor to stop, followed by a brief restart in the opposite direction. Consequently, the pinion 9 rotating clockwise will stop to start again for a moment counterclockwise, FIG. 1. In doing so, it drives the crank washer 12, which in turn drives the lever 15 through its connecting rod 14 in its extreme pivoting position opposite the rotor 3.
the cam 7 thus released s' away from the rotor 3 under the effect of the reaction of the pipe 5 resuming its shape in line with the rollers 30.
Fig. 3 shows a pump according to the invention operating in exactly the same way as that which has been described previously. It differs from this in that it is multi-channel, namely that instead of a single pipe 5, it includes several which are mounted in parallel around the rotor 3. 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.
the set of cams 7a to 7g are maneuvered by a single lever 15, provided however with an adjusting finger 17 for each cam. It is therefore possible to adjust each cam individually, or even to neutralize one or more channels by total retraction in the lever 15 of the corresponding finger or fingers 17. It will be noted that a simpler version may have only one cam for all of the pipes.
the pump shown in Fig. 4 operates bidirectionally. Like that of FIG. 3, it is multi-channel and with each pipe 5 is associated a particular cam 7h to 7m.
the pipes 5 and the cams 7h to 7m form two groups adjacent to each of which are assigned on its free side a lever 15a, 15b and its drive system which are as previously described.
the two drive systems operate in opposition, so that for one 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.
there can again be a means of adjustment specific to each cam as in a simplified version, there can be only one cam per group of pipes 5, as there can also have only one hose 5 per group.
the pump stop command can be programmed in such a way that the two groups of pipes are released each time they stop.

Landscapes

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

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 true EP0786596A1 (de)	1997-07-30
EP0786596B1 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

Country Status (4)

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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2004044425A1 (en) *	2002-11-13	2004-05-27	Ecolab Inc.	Peristaltic pump
EP1705375A1 (de) *	2005-03-10	2006-09-27	LIFEBRIDGE Medizintechnik AG	Schlauchpumpe
US7300264B2 (en)	2003-09-08	2007-11-27	Hewlett-Packard Development, L.P.	Peristaltic pump
WO2009073212A1 (en)	2007-12-05	2009-06-11	Bunn-O-Matic Corporation	Peristaltic pump
CN104895779A (zh) *	2015-06-09	2015-09-09	常州普瑞流体技术有限公司	一种不锈钢蠕动泵泵头
US9713660B2 (en)	2012-12-21	2017-07-25	Alcon Research, Ltd.	Cassette clamp mechanism
CN110925176A (zh) *	2019-12-26	2020-03-27	长沙执先智量科技股份有限公司	一种双滚轮旋转式高精度蠕动泵

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE202016000790U1 (de)	2016-02-08	2016-03-18	Ralf Hannibal	Schlauchquetschpumpe mit einem Schwenkantrieb und einer Rohrweiche

Citations (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
EP0078092A1 (de) *	1981-10-20	1983-05-04	Rudolph Berelson	Peristaltische Pumpe
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
EP0355021A2 (de) *	1988-08-16	1990-02-21	Fresenius AG	Druckinfusionsapparat
JPH07217541A (ja) *	1994-02-01	1995-08-15	Fumito Komatsu	チューブポンプ

1996
- 1996-01-26 FR FR9601195A patent/FR2744176B1/fr not_active Expired - Fee Related
1997
- 1997-01-23 EP EP19970460007 patent/EP0786596B1/de not_active Expired - Lifetime
- 1997-01-23 DE DE1997600070 patent/DE69700070T2/de not_active Expired - Fee Related
- 1997-01-23 DK DK97460007T patent/DK0786596T3/da active

Patent Citations (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
EP0078092A1 (de) *	1981-10-20	1983-05-04	Rudolph Berelson	Peristaltische Pumpe
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
EP0355021A2 (de) *	1988-08-16	1990-02-21	Fresenius AG	Druckinfusionsapparat
JPH07217541A (ja) *	1994-02-01	1995-08-15	Fumito Komatsu	チューブポンプ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 95, no. 008 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2004044425A1 (en) *	2002-11-13	2004-05-27	Ecolab Inc.	Peristaltic pump
US7300264B2 (en)	2003-09-08	2007-11-27	Hewlett-Packard Development, L.P.	Peristaltic pump
EP1705375A1 (de) *	2005-03-10	2006-09-27	LIFEBRIDGE Medizintechnik AG	Schlauchpumpe
US7597546B2 (en)	2005-03-10	2009-10-06	Lifebridge Medizintechnik Ag	Hose pump
WO2009073212A1 (en)	2007-12-05	2009-06-11	Bunn-O-Matic Corporation	Peristaltic pump
EP2232074A1 (de) *	2007-12-05	2010-09-29	Bunn-O-Matic Corporation	Schlauchpumpe
EP2232074A4 (de) *	2007-12-05	2017-03-29	Bunn-O-Matic Corporation	Schlauchpumpe
US9713660B2 (en)	2012-12-21	2017-07-25	Alcon Research, Ltd.	Cassette clamp mechanism
CN104895779A (zh) *	2015-06-09	2015-09-09	常州普瑞流体技术有限公司	一种不锈钢蠕动泵泵头
CN110925176A (zh) *	2019-12-26	2020-03-27	长沙执先智量科技股份有限公司	一种双滚轮旋转式高精度蠕动泵
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

Also Published As

Publication number	Publication date
DE69700070T2 (de)	1999-05-20
DE69700070D1 (de)	1999-02-04
FR2744176B1 (fr)	1998-04-10
DK0786596T3 (da)	1999-08-23
FR2744176A1 (fr)	1997-08-01
EP0786596B1 (de)	1998-12-23

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