WO2005031166A1 - Pompe peristaltique - Google Patents

Pompe peristaltique Download PDF

Info

Publication number
WO2005031166A1
WO2005031166A1 PCT/CH2004/000390 CH2004000390W WO2005031166A1 WO 2005031166 A1 WO2005031166 A1 WO 2005031166A1 CH 2004000390 W CH2004000390 W CH 2004000390W WO 2005031166 A1 WO2005031166 A1 WO 2005031166A1
Authority
WO
WIPO (PCT)
Prior art keywords
hose
pump according
bed body
support frame
rotor
Prior art date
Application number
PCT/CH2004/000390
Other languages
German (de)
English (en)
Inventor
Stephan Michels
René Fässler
Corinne SCHÄRER
Daniel Saxer
Original Assignee
Ismatec Sa, Laboratoriumstechnik
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 Ismatec Sa, Laboratoriumstechnik filed Critical Ismatec Sa, Laboratoriumstechnik
Priority to DE502004005771T priority Critical patent/DE502004005771D1/de
Priority to US10/573,287 priority patent/US20070104599A1/en
Priority to EP04738031A priority patent/EP1680600B1/fr
Publication of WO2005031166A1 publication Critical patent/WO2005031166A1/fr

Links

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

Definitions

  • the invention relates to a peristaltic pump according to the preamble of claim 1.
  • Peristaltic pumps of the type in question are known in principle. They are used to pump a wide variety of liquid or gaseous media.
  • a roller pump for peristaltic delivery of media which is provided with a hose cassette.
  • the hose cassette is fixed to the roller pump by means of a lockable cover.
  • the conveyor rollers are resiliently supported on a rotating body.
  • such a roller pump together with the hose cassette has a relatively large length and accordingly requires a lot of space.
  • a peristaltic pump is known from WO 02/25112, which is provided with a multi-part housing in which a reduction gear is arranged.
  • the pressure tubes for squeezing a flexible hose section are integrated in the reduction gear.
  • Such a pump consists of a large number of individual parts, is relatively expensive to manufacture and takes a long time to assemble.
  • US Pat. No. 5,857,843 discloses a peristaltic pump which has a support frame on which the rotor is exchangeably mounted.
  • the support frame is provided with pawl-shaped locking elements which serve to fix a plate forming the upper housing part.
  • the plate is concave on the inside and serves to accommodate a flexible hose section.
  • the object of the present invention is to improve a pump designed in accordance with the preamble of claim 1 in such a way that it is compact and can be produced inexpensively, that it can be assembled easily and quickly, and that it is very stable when assembled and has a high degree of shape accuracy. This object is achieved with a pump with the in the characterizing part of the claim
  • Figure 1 is an exploded view of the peristaltic pump.
  • FIG. 2 shows the assembled pump according to FIG. 1 in a first cross section
  • FIG. 3 shows the assembled pump according to FIG. 1 in a further cross section.
  • FIG. 1 shows a six-channel peristaltic pump in an exploded view.
  • the pump essentially consists of a support frame 1, a hose receptacle 2, a rotor 3 and a connecting element 4 with six hose sections 43 arranged thereon.
  • a gearwheel 5 provided for coupling to a drive motor (not shown) is also shown.
  • the dimensionally stable support frame 1 forms together with the hose receptacle
  • the support frame 1 For the rotatable mounting of the rotor 3, two bearing bushes 11 are arranged on the support frame 1.
  • the two end faces of the support frame 1 are formed by plates 12 which are provided with slots 15a, 15b for fixing the support frame 1 or the entire pump.
  • the support frame 1 is provided on both sides with a plurality of slot-shaped recesses 13, in which locking elements 22 of the hose receptacle 2 can be clamped, as will be explained in more detail below.
  • the hose receptacle 2 has an essentially omega-shaped hose bed body 25 which extends on the inside coaxially to the axis of rotation of the rotor 3 over approximately 130 ° in the form of a circular arc and forms a hose bed.
  • omega-shaped means that the tubular bed body 25 essentially has the shape of a large omega ( ⁇ ).
  • the tubular bed body 25 forms two legs 2a, 2b, which transition from a concave to a convex shape in a smooth transition.
  • the tube bed is divided into six sections by groove-shaped recesses 21, which serve to accommodate the flexible tube sections. Instead of the groove-shaped recesses 21 for - ⁇
  • a tube mat consisting of six interconnected tubes could also be used to form six sections.
  • the tubular bed body 25 could be provided with a largely smooth inside.
  • the two legs 2a, 2b of the tube bed body 25 are provided on the outside with locking elements 22, by means of which the tube receptacle 2 can be fixed to the slot-shaped recesses 13 of the support frame 1.
  • Radially extending reinforcing ribs 23 and axially extending reinforcing ribs 24 are provided on the outside of the tubular bed body 25.
  • the radially extending reinforcing ribs 23 extend approximately 180 ° over the outside of the tubular bed body 25.
  • tubular receptacle 2 is dimensioned such that the two legs 2a, 2b of the tubular bed body 25 are resiliently resilient in the radial direction at the ends, and the tubular receptacle is quickly fixed 2 enable in the sense of a snap connection on the support frame 1.
  • the rotor 3 consists of a rotor body 31 which is provided with a central axis 32 which is inserted into the bearing bushes 11 of the support frame 1.
  • Three conveyor rollers 33 in the form of rollers are rotatably mounted on the rotor body 31.
  • the rotor body 3 is preferably made of plastic, while the central axis 32 and the conveyor rollers 33 are preferably made of metal.
  • connection element 4 consists of a base element 41 to which twelve pipe sections 42 are fastened. A total of six flexible hose sections 43 are arranged on the upper parts of these pipe sections 42, which, after the pump has been assembled, put on the inside of the hose bed body 25 and can be squeezed off by the conveyor rollers 33 for the peristaltic conveying of a medium. It goes without saying that the design of the inlet and outlet area is not limited to a six-channel pump, but the number of channels can be varied practically as desired.
  • the individual parts shown can be assembled into a pump in a few simple steps, by first fastening the individual hose sections 43 to the connecting element 4 and then inserting the rotor 3 from the side into the hose sections 43 forming the loops. Then the hose holder 2 is set up in a U-shape and the rotor 3, together with the connecting element 4 and the hose sections 43 connected to it, are pushed in from above. The support frame 1 is then placed on and a pressure is exerted so that the axis 32 of the rotor 3 and the latching elements 22 snap into place. Finally, the connection element 4 is fixed on the support frame 1. At the The embodiment shown here is attached to the connecting element 4 by means of screws. Alternatively, a snap connection can be provided to fasten the connection element 4, which enables the connection element 4 to be fastened to the support frame 1 quickly. The entire assembly of the pump can be done from one side and without the aid of tools, which is an advantage in automatic production.
  • FIG. 2 shows a first cross section through the assembled pump.
  • This illustration shows, in particular, the rotor body 31 together with the three conveyor rollers 33a, 33b, 33c which are rotatably arranged thereon and roll on the respective hose section 43, the hose holder 2 with the omega-shaped hose bed body 25 and the radial and axial reinforcing ribs 23, 24.
  • the reinforcing ribs 23, 24 ensure that the hose holder 2 is dimensionally stable and does not deform during operation under the load on the conveyor rollers 33a, 33b, 33c.
  • the omega-shaped design of the tubular bed body 25 with a “soft” inlet and outlet area ensures a continuous and low-pulsation peristaltic conveying of the respective medium.
  • the soft inlet and outlet is the reduction of torque peaks, which would put a load on the engine and transmission. If a direction of rotation D in the counterclockwise direction is assumed, the area provided with the reference number 35 represents the inlet area, while the area provided with the reference number 36 forms the outlet area of the pump.
  • the pump can be operated both clockwise and counterclockwise.
  • a soft or continuous inlet and outlet area means that both the inlet area 35 and the outlet area 36 are designed in such a way that the conveying-effective hose cross-section is continuously reduced or enlarged by the conveying roller 33a, 33c rolling on the respective flexible hose section 43. It is important in this context that the tubular bed body 25 is manufactured precisely and has a high degree of dimensional accuracy during operation, so that the predetermined distances between the conveyor roller 33a, 33b, 33c and tubular bed body 25 are maintained.
  • a continuous inlet and outlet area 35, 36 results in further advantages, for example by minimizing the torque fluctuations that occur during the rotation of the rotor 3.
  • This is additionally favored by the fact that the rotor 3 is provided with three conveyor rollers 33a, 33b, 33c and the inlet area 35 is offset by approximately 240 ° about the axis of rotation of the rotor 3 with respect to the outlet area 36, so that the first conveyor roller 33a is approximately in the middle of the inlet area 35 when the third conveyor roller is 33c is located approximately in the middle of the outlet area 36.
  • the design shown also achieves a high degree of efficiency and reduces the mechanical load on the hose sections 43, which increases their service life.
  • the pump Since the pump is designed symmetrically, it can also be operated bidirectionally, ie in both directions of rotation. 2 also shows that the respective hose section 43 in the inlet area 35 and in the outlet area 36 is not completely squeezed, while after the inlet area 35 it is completely squeezed out by the corresponding conveying roller 33b and enables peristaltic conveying of the respective medium , A pump designed in this way is also particularly suitable for the cell-friendly conveying of liquid media such as blood, since the blood cells are protected by the specific design of the inlet and outlet areas 35, 36.
  • hose receptacle 2 with a dimensionally stable hose bed body 25 and elastically flexible legs 2a, 2b enables a very quick and simple assembly by simply clipping the hose receptacle 2 onto the supporting frame.
  • the legs 2a, 2b must be resilient for installation, the tubular bed body 25 must retain a high dimensional stability and a precise geometry after fixing. Among other things, this achieved in that the resiliently flexible parts are positioned and stiffened on the support frame 1 by means of external positive support.
  • FIG. 3 which shows the assembled pump in a cross section between two hose sections 43, shows in particular the clamping fixation of the hose bed body 25 on the support frame 1.
  • the locking elements 22 arranged on the outside of the tubular bed body 25 engage in the slot-shaped recesses 13 in the support frame 1.
  • the latching elements 22 also engage in a form-fitting manner on an upper web 14 of the supporting frame 1 that delimits the slot-shaped recesses 13.
  • the legs 2a, 2b of the tubular bed body 25 are positively supported on the outside by the web 14 of the supporting frame 1.
  • This design also ensures in particular the precise maintenance of the optimized distances between the conveyor rollers 33a, 33b, 33c and the inside 25a of the tubular bed body 25.
  • the individual, elastic tube sections 43 additionally support the fixing of the tube bed body 25 to the support frame 1, since the conveyor rollers 33a, 33b, 33c of the rotor 3 radially extend the tube bed body 25 via the tube sections 43 Load direction so that its fixation on the support frame 1 is additionally supported.
  • connection element 4 is designed and matched to the hose receptacle 2 and the rotor 3 in such a way that the individual hose section 43 is guided substantially tangentially into and out of the hose bed body 25 of the hose receptacle 2.
  • the tubular bed body 25 must wrap around the rotor 3 at least to such an extent that at least one conveyor roller 33a, 33b 33c is always active, i.e. engages with the respective hose section and squeezes it.
  • the minimum wrap or the minimum wrap angle can be calculated as follows:
  • the wrap is calculated using the following formula:
  • the calculated wrap is to be understood as a minimum dimension.
  • the wrap is preferably chosen to be approximately 10 ° larger than the wrap angle calculated according to the preceding formula. Wrapping is to be understood as that part of the hose bed which coaxially encompasses the rotor.
  • - It can be single or multi-channel

Landscapes

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

Abstract

L'invention concerne une pompe péristaltique dans laquelle l'enveloppe est formée par un cadre support (1) à stabilité dimensionnelle, et par un dispositif récepteur de tuyaux (2) ajustable sur ce cadre au moyen d'un assemblage par encliquetage. Sur le cadre support (1) est monté un rotor (3) muni de trois rouleaux de circulation rotatifs (33a, 33b, 33c). Le dispositif récepteur de tuyaux (2) est muni d'un corps d'appui (25), lequel forme, sur la face intérieure, un appui pour les tuyaux et présente deux branches (2a, 2b) à ses extrémités. Dans cet appui sont logées des sections souples de tuyaux (43), lesquelles sont compressées et refoulées élastiquement par lesdits rouleaux de circulation (33a, 33b, 33c) en vue d'assurer la circulation péristaltique d'un fluide. Les deux branches (2a, 2b) sont déformables élastiquement en direction radiale en vue de pouvoir s'adapter élastiquement sur le cadre support (1). Le corps d'appui (25) présente essentiellement une configuration en forme générale d'oméga et est muni d'une zone d'entrée et de sortie uniforme assurant une circulation péristaltique, continue et à faible pulsation, du fluide. La pompe est d'une construction compacte et comprend peu de pièces détachées et peut être montée rapidement et facilement.
PCT/CH2004/000390 2003-09-26 2004-06-25 Pompe peristaltique WO2005031166A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE502004005771T DE502004005771D1 (de) 2003-09-26 2004-06-25 Peristaltische pumpe
US10/573,287 US20070104599A1 (en) 2003-09-26 2004-06-25 Peristaltic pump
EP04738031A EP1680600B1 (fr) 2003-09-26 2004-06-25 Pompe peristaltique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH16352003 2003-09-26
CH1635/03 2003-09-26

Publications (1)

Publication Number Publication Date
WO2005031166A1 true WO2005031166A1 (fr) 2005-04-07

Family

ID=34383944

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2004/000390 WO2005031166A1 (fr) 2003-09-26 2004-06-25 Pompe peristaltique

Country Status (5)

Country Link
US (1) US20070104599A1 (fr)
EP (1) EP1680600B1 (fr)
AT (1) ATE381673T1 (fr)
DE (1) DE502004005771D1 (fr)
WO (1) WO2005031166A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7866960B2 (en) 2005-12-09 2011-01-11 Industrial Technology Research Institute Peristaltic pump
EP2116725A3 (fr) * 2008-05-09 2012-07-25 Brightwell Dispensers Limited Pompe péristaltique dotée d'un tuyau amovible

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8062008B2 (en) 2007-09-27 2011-11-22 Curlin Medical Inc. Peristaltic pump and removable cassette therefor
US8083503B2 (en) 2007-09-27 2011-12-27 Curlin Medical Inc. Peristaltic pump assembly and regulator therefor
US7934912B2 (en) 2007-09-27 2011-05-03 Curlin Medical Inc Peristaltic pump assembly with cassette and mounting pin arrangement
US9518576B1 (en) * 2010-07-15 2016-12-13 Elemental Scientific, Inc. Peristaltic pump
US10113542B2 (en) 2012-05-24 2018-10-30 Cook Medical Technologies Llc Peristaltic pump tubing securing system
USD809909S1 (en) 2013-03-15 2018-02-13 Cook Medical Technologies Llc Tubing clips
US10151309B2 (en) * 2016-03-21 2018-12-11 John McIntyre Peristaltic pump
DE102016009174B3 (de) * 2016-07-29 2017-11-02 W. O. M. World of Medicine GmbH Schlauchkassette für eine peristaltische Pumpe mit elastischen Schenkeln
CN106884782B (zh) * 2017-04-06 2019-01-11 珠海意动智能装备有限公司 蠕动泵
CN114278542B (zh) * 2021-12-28 2023-11-21 通达创智(厦门)股份有限公司 一种多管等量输送液体的蠕动泵

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723030A (en) * 1971-03-03 1973-03-27 Buchler Instr Division Peristaltic pump with stacked components
US4631008A (en) * 1985-11-04 1986-12-23 G. H. Stenner & Co., Inc. Peristaltic pump housing
FR2599434A1 (fr) * 1986-05-27 1987-12-04 Biomed Systemes Pompe peristaltique a corps de pompe demontable.
EP0731275A1 (fr) * 1995-03-06 1996-09-11 Epenhuysen Chemie N.V. Pompe péristaltique
US5857843A (en) * 1995-10-20 1999-01-12 Harvest Technologies Llc Peristaltic pump with removable rotor
WO2002025112A1 (fr) * 2000-09-22 2002-03-28 Sorenson Technologies, Inc. Pompe de deplacement positif a tube elastique
EP1137886B1 (fr) * 1998-12-09 2002-07-31 Rheotec AG Pompe a rouleaux permettant le transport peristaltique de milieux fluides et gazeux

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7118203B2 (en) * 2003-08-25 2006-10-10 Hewlett-Packard Development Company, L.P. Peristaltic pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723030A (en) * 1971-03-03 1973-03-27 Buchler Instr Division Peristaltic pump with stacked components
US4631008A (en) * 1985-11-04 1986-12-23 G. H. Stenner & Co., Inc. Peristaltic pump housing
FR2599434A1 (fr) * 1986-05-27 1987-12-04 Biomed Systemes Pompe peristaltique a corps de pompe demontable.
EP0731275A1 (fr) * 1995-03-06 1996-09-11 Epenhuysen Chemie N.V. Pompe péristaltique
US5857843A (en) * 1995-10-20 1999-01-12 Harvest Technologies Llc Peristaltic pump with removable rotor
EP1137886B1 (fr) * 1998-12-09 2002-07-31 Rheotec AG Pompe a rouleaux permettant le transport peristaltique de milieux fluides et gazeux
WO2002025112A1 (fr) * 2000-09-22 2002-03-28 Sorenson Technologies, Inc. Pompe de deplacement positif a tube elastique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7866960B2 (en) 2005-12-09 2011-01-11 Industrial Technology Research Institute Peristaltic pump
EP2116725A3 (fr) * 2008-05-09 2012-07-25 Brightwell Dispensers Limited Pompe péristaltique dotée d'un tuyau amovible

Also Published As

Publication number Publication date
US20070104599A1 (en) 2007-05-10
EP1680600A1 (fr) 2006-07-19
DE502004005771D1 (de) 2008-01-31
ATE381673T1 (de) 2008-01-15
EP1680600B1 (fr) 2007-12-19

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