US3366071A - Peristaltic pump - Google Patents

Peristaltic pump Download PDF

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Publication number
US3366071A
US3366071A US568917A US56891766A US3366071A US 3366071 A US3366071 A US 3366071A US 568917 A US568917 A US 568917A US 56891766 A US56891766 A US 56891766A US 3366071 A US3366071 A US 3366071A
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United States
Prior art keywords
tube
rollers
rolling
section
track
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Expired - Lifetime
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US568917A
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English (en)
Inventor
Dutler Hans
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.)
LKB PRODUCKTER AB
LKB-PRODUCKTER AB
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LKB PRODUCKTER AB
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Publication date
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Publication of US3366071A publication Critical patent/US3366071A/en
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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
    • 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

Definitions

  • the peristaltic or tube squeezing pump is of the planetary type, i.e. it has rollers without individual bearings and contacting a central driving member which preferably is circular.
  • the rollers are arranged to roll on the tube and on a rolling face along different portions of their travel. In each roller the portion contacting the tube has a slightly greater diameter than the portion contacting the rolling face so that a slight recoil movement of the said tube contacting portion is produced while the roller is rolling on the rolling face.
  • This invention relates to improvements in peristaltic pumps of the kind having a tube carried by a supporting face and rollers movable along the tube for compressing it.
  • each individual roller is rotatably mounted on a carrier and the carrier, for example a rotatable carrying member or a pair of rotating chains, is in its turn movably mounted.
  • the carrier for example a rotatable carrying member or a pair of rotating chains
  • the peristaltic pump of this invention is characterized in that the rollers are held capable of being rolled freely on the tube and/or a rolling face without central bearing of each roller and are capable of being driven by means of a common driving member by frictional engagement on a place lying diametrically opposite the place of contact with the tube.
  • this pump may therefore be compared to that of a roller bearing with a driven inner ring, the tube being located between the roller bodies and the stationary outer ring.
  • a further drawback of the known peristaltic pumps is that the tube under the action of the roller rolling on it has a tendency to wander. Consequently the tube, firmly held in the pump, is periodically stretched and released again whereby a heavy stressing and premature instability of the tube result.
  • This phenomenon may be obviated in the pump according to the invention by forming the rollers with two parts of slightly different diameters and allowing the part of smaller diameter to roll on a rolling face whilst the part of greater diameter presses on the tube whereby the contact place carries out a recoil movement.
  • FIGURE 1 shows a plan view of the pump with the cover plate removed and FIGURE 2 shows an axial section of the pump.
  • the pump illustrated has a casing with a dish-shaped lower part 1, for example of polyvinyl chloride, and a cover plate 2 detachably fixed by means, not shown, to the lower part 1.
  • the cover plate 2 is for example made of Plexiglas.
  • six rollers 3 of synthetic material, for example of Delrin (registered trade mark) are arranged so that their axes lay on a circle.
  • the rollers 3 each have an upper flange portion 3a, the periphery of 3,366,071 Patented Jan. 30, 1968 which rolls on a portion of an elastic tube 4 bent approximately circularly in order to squeeze the same and to cause a medium located in the tube 4 to move through the tube in the direction of movement of the rollers 3.
  • the tube 4 is supported by a supporting face 5 of the casing 1.
  • a lower part 3b of each roller 3 is recessed to provide a traction portion which rolls on a cylinder-likerolling track or face 6 in the lower part 1 of the casing.
  • the tube supporting face 5 embraces three adjacent sections 5a, 5b and 5c each extending over an angle of 60.
  • the middle section 5b lies on a cylinder coaxial with the rolling face 6 whilst the two outer sections 5a and 5c lie on a cylinder with the axis A (FIGURE 1) arranged eccentrically of the rolling face 6.
  • the radius of the section 5b is so selected that the section of tube lying on this section 512 is completely compressed by the roller 3 in question, that is, such that the inner space of the tube is closed.
  • the eccentricity of the sections 5a and 5c of the supporting face 5 is so dimensioned that the tube 4 in these sections is compressed gradually from the full free diameter of the tube and released from complete closing, respectively.
  • the distance between the periphery of the roller 3 and the supporting face 5 is therefore equal to the outer diameter of the non-deformed tube 4 whilst in the whole of section 5b this distance is equal to about twice the wall thickness of the tube.
  • a pressure ring 7 is disposed between the upper parts 3a of the rollers.
  • the rollers 3 are driven by a wheel 8 which is in contact with the lower parts 3b of the rollers via an O-ring 8a of rubber and a driving ring 9 placed over this O-ring.
  • the pressure ring 7 and the driving ring 9, for avoiding deformation and wear, should not consist of a material which is too soft. They should however be somewhat resilient in the peripheral direction in order to compensate tolerances.
  • the rings 7 and 9 therefore consist preferably of a relatively hard synthetic material such as, for example, of Delrin and they are provided with radial slots 7a and 9a, respectively, which extend alternately from the top and from the bottom over a little more than half the height of the rings.
  • the wheel 8 is in its turn driven by a coupling piece 12 centered in the wheel 8 by means of a further O-ring 11 and fixed on a driving shaft 10 which coupling piece engages with two pins 13 in corresponding slots 14 in the wheel 8. It will be clear that the driving shaft 10 does not have to take up any radial or axial forces and that no accurate alignment of this shaft is necessary.
  • the upper parts 3a of the rollers 3 have a somewhat larger diameter than the lower parts 3b. This results in that, in the sections 5a and 5c in which the lower roller parts 3b roll on the rolling face 6, the contact places of the upper roller parts 3a with the tube carry out a slight recoil movement which counteracts the tendency to wander of the tube which occurs in the known peristaltic pumps.
  • each roller 3 In the section 5b in which the tube 4 is completely compressed in line by each roller 3 the said recoil movement is not desired because it would lead to too great a stressing of the tube.
  • the radius of the section 5b of the supporting face 5 and the outer radius of the pressure ring 7 are therefore so adapted to one another that in the section b each roller 3 is raised quite a little from the rolling face 6 and rolls on the tube 4. It is clear that a roller when located in the section 5b is thereby moved a little more quickly than the remaining rollers, therefore, the rollers 3 must at least at this place have a small clearance (FlGURE 1).
  • a recess (not shown) which extends preferably from the upper edge of the rolling face beyond about "-X; of the width thereof.
  • the roller 3 rolls in the section 512 only on the lower third of the rolling face 6 and at the same time with the part 3a on the tube 4 whereby the roller can carry out if necessary a slight tilting movement.
  • rollers 3 (and the pressure ring 7) are held between the base of the under part of the casing 1 and the cover plate 2.
  • a sliding friction takes place on the places of contact. Although this friction does not take place under pressure it may be advantageous to cover the base of the under part 1 of the casing and the underside of the cover plate 2 with exchangeable discs and 16, respectively, for example of Celluloid.
  • incisions or notches which can take up any particles removed by abrasion so that they do not fall between the faces rolling on one another and attack same.
  • Such incisions or notches may for example be provided in the upper side and lower side of the rollers 3 and possibly in the lowermost part of the peripheral surface of the roller part 312 as well as also in the lower side of the lower flange of the wheel 8.
  • the pump described is very simply constructed and cheaply manufactured; it may if necessary be taken to pieces easily for cleaning purposes for which only the cover plate 2 has to be removed, and all individual parts are exchangeable without trouble.
  • rollers 3 There need not necessarily be six rollers 3 provided. If with another number of rollers the described uniform, impact free output is desired only the length of the sections 5a, 5b and 5c need be varied, i.e., adapted to the distance between adjacent rollers.
  • rollers need not be arranged on a circle. Their arrangement, for example, in an oval is feasible; the wheel 8 in this case must be replaced by a driving member, for example, in the form of an endless band of suitable shape contacting the rollers.
  • a peristaltic pump comprising a collapsible tube (4), a supporting face (5) for said tube, a rolling track (6), said rolling track defining a closed path and being adjacent to said supporting face (5) over a part of said path, a plurality of rollers (3), each of said rollers having an annular flange (3a) and a reduced diameter traction portion (3b), a common driving member (8) for rolling said rollers over said closed path so that said flanges engage said tube (4) and said traction portions engage said track (6), the distance between said rolling track (6) and said supporting face (5) varying along said part of said path so that at a location where said distance is comparatively small said tube (4) is compressed between said flanges (3a) and said supporting face (5) and at a location where said distance is comparatively large said flanges do not collapse said tube but maintain frictional engagement therewith to urge said tube in a direction opposite to the general direction in which said rollers are rolling.
  • said part of said path comprises a first section in which each of said rollers (3) enters with said traction portion (311) in rolling contact with said track (6) and wherein said distance between said track and said supporting face becomes less as said roller travels through said first section so that said tube is gradually compressed between said flange and said supporting face until said tube is completely collapsed, a second section wherein said distance between said supporting face and said track is constant over the length of said second section and sufliciently small so that said flanges (3a) completely collapse said tube (4) as they travel over said second section, and a third section wherein the distance between said supporting face and said track gradually increases over the length of said section so that as each of said rollers travels said third section said tube gradually opens.
  • rollers (3) are positioned substantially equidistant along said tube and the length of each of said sections is approximately equal to the distance between the locations on said tube contacted by said flanges.
  • a peristaltic pump comprising a curved supporting face (5), a flexible tube (4) positioned on said supporting face, a generally circular roiling track (6), a part of said rolling track (6) being adjacent to said supporting face (5), a plurality of planetary rollers (3), each of said rollers having an annular flange (3a) for rolling over said tube and an axially spaced reduced diameter track portion for engagement with said track, a driving wheel disposed between and adapted to drive said rollers, the distance between said rolling track (6) and said supporting face (5) varying along said part of said rolling track so that, at a location where said distance is comparatively small, said tube is completely collapsed between said flanges and said supporting face, and at a location where said distance is comparatively large said tube is not completely collapsed between said flanges and said supporting face and said traction ortions roll on said rolling track while said flanges spin on said tube to urge said tube in a direction opposite to the general direction in which said rollers are driven by said driving wheel
  • said supporting face (5) comprises three sections adjoining one another, the middle one (5b) of said sections being coaxial with said rolling track (6), the other two of said sections being on either side of said middle section and each being in the form of a cylindrical section eccentric with respect to said rolling track, the radii of said rolling track and said three sections being so chosen that in the section (5a) first traversed by said rollers said flanges (3a) gradually compress said tube (4), until it is closed, in said middle section (5b) said rollers roll with said flanges on said tube to maintain said compression and in the third section (5c) said rollers roll with said traction portion on said rolling track and gradually release said compression.
  • rollers (3) are six in number and are substantially uniformly distributed on a circle having a diameter such that said rollers are only at a slight distance from one another and wherein said three sections of said supporting face each extend over an angle of at least approximately 60.
  • a peristaltic pump comprising a curved supporting face (5), a flexible tube (4) positioned on said supporting face, a generally circular rolling track (6), a part of said rolling track being adjacent to said supporting face, a plurality of planetary rollers (3), each of said rollers having an annular flange (3a) for rolling over said tube and an axially spaced reduced diameter track portion (3b) for rolling on said track, a driving wheel (8) disposed between and adapted to drive said rollers, said driving wheel being axially aligned with said traction portion of each of said rollers, the distance between said rolling track and said supporting face varying along said part of said rolling track, so that, at a location where said distance is comparatively small, said tube is completely collapsed between said flanges and said supporting face and, at a location where said distance is comparatively large, said tube is not completely collapsed between said flanges and said supporting face, said traction portions being adapted to roll on said rolling track and said flanges to spin on said tube to

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
US568917A 1965-08-03 1966-07-29 Peristaltic pump Expired - Lifetime US3366071A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1091165A CH433992A (de) 1965-08-03 1965-08-03 Peristaltikpumpe

Publications (1)

Publication Number Publication Date
US3366071A true US3366071A (en) 1968-01-30

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ID=4368122

Family Applications (1)

Application Number Title Priority Date Filing Date
US568917A Expired - Lifetime US3366071A (en) 1965-08-03 1966-07-29 Peristaltic pump

Country Status (5)

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US (1) US3366071A (cs)
CH (1) CH433992A (cs)
DE (1) DE1553005C3 (cs)
GB (1) GB1105236A (cs)
SE (1) SE325201B (cs)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724974A (en) * 1970-08-28 1973-04-03 Logeais Labor Jacques Peristaltic pump
US3787148A (en) * 1972-09-26 1974-01-22 Kopf D Syst Roller pump
US3990444A (en) * 1972-11-22 1976-11-09 Vial S.A.R.L. Blood transfusion apparatus
US4113409A (en) * 1976-02-03 1978-09-12 Messerschmitt-Bolkow-Blohm Gesellschaft Mit Beschrankter Haftung Hose pump with friction drive of hollow, resilient roller means
US4187057A (en) * 1978-01-11 1980-02-05 Stewart-Naumann Laboratories, Inc. Peristaltic infusion pump and disposable cassette for use therewith
US4201525A (en) * 1978-07-05 1980-05-06 Baxter Travenol Laboratories, Inc. Peristaltic pump
US4231725A (en) * 1978-10-16 1980-11-04 Cole-Parmer Instrument Company Peristaltic pump
EP0019818A1 (de) * 1979-05-23 1980-12-10 Siemens Aktiengesellschaft Rollenpumpe
US4515584A (en) * 1982-07-06 1985-05-07 Fujisawa Pharmaceutical Co., Ltd. Artificial pancreas
EP0164020A1 (en) * 1984-05-25 1985-12-11 ISCO, Inc. Peristaltic pump
US4673334A (en) * 1984-05-25 1987-06-16 Isco, Inc. Peristaltic pump
US4886431A (en) * 1988-04-29 1989-12-12 Cole-Parmer Instrument Company Peristaltic pump having independently adjustable cartridges
US5044902A (en) * 1989-03-13 1991-09-03 Edouard Malbec Cartridge for peristaltic pump with a flexible tube, and peristaltic pump fitted with such a cartridge
US5082429A (en) * 1990-08-28 1992-01-21 Cole-Parmer Instrument Company Peristaltic pump
WO1993024755A1 (en) * 1992-06-03 1993-12-09 Allergan, Inc. Reduced pulsation tapered ramp pump head
US5470211A (en) * 1993-08-12 1995-11-28 Stockert Instrumente Gmbh Roller pump
US20050159708A1 (en) * 2002-07-24 2005-07-21 Rudolf Sidler Infusion pump, control program, semiconductor means and method for the dosed administration of a medicinal liquid
US20070258829A1 (en) * 2006-04-21 2007-11-08 Bredel Hose Pumps B.V. Peristaltic pump
US20100006316A1 (en) * 2008-07-09 2010-01-14 Brandon Begnaud Protective cover plate
US20110305588A1 (en) * 2010-06-09 2011-12-15 Seiko Epson Corporation Fluid transporter
WO2013023939A1 (en) 2011-08-17 2013-02-21 Nestec S.A. Linear peristaltic pump
US20140271293A1 (en) * 2013-03-14 2014-09-18 Blue-White Industries, Ltd. High pressure, high flow rate tubing assembly and adapter for a positive displacement pump
US20140330200A1 (en) * 2011-11-23 2014-11-06 Bamed Ag Breast pump
RU167996U1 (ru) * 2016-08-23 2017-01-16 Общество с ограниченной ответственностью "Научно-производственное предприятие "Неовакс" Печатная головка 3D принтера
US11131300B2 (en) 2010-01-22 2021-09-28 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump
CN115681103A (zh) * 2022-09-29 2023-02-03 深圳市德宇鑫科技有限公司 蠕动泵
US11578716B2 (en) 2010-01-22 2023-02-14 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383333A1 (fr) * 1977-03-11 1978-10-06 Malbec Edouard Pompe peristaltique
FR2431621A1 (fr) * 1978-07-20 1980-02-15 Avri Sa Pompe electrique perfectionnee, notamment pour lave-glaces
EP0026704B1 (fr) * 1979-09-27 1986-06-04 Hemocare Pompe péristaltique
DK147863C (da) * 1981-04-07 1985-08-19 Elektronikcentralen Rullepumpe, fortrinsvis til doseret injektion af en vaeske
SE445943B (sv) * 1981-05-27 1986-07-28 Per Borgstrom Peristaltikpump
DE3326786A1 (de) * 1983-07-25 1985-02-14 Fresenius AG, 6380 Bad Homburg Pumpenbett fuer eine rollenpumpe
GB2173549B (en) * 1985-03-27 1988-05-25 Mars G B Ltd Peristalic pumps
GB2226601B (en) * 1988-10-29 1993-07-21 Robert Gordon Hood Peristaltic pump.
BE1003810A3 (fr) * 1990-02-28 1992-06-16 Axcel S C Pompe a beton a systeme peristaltique.
DE9206531U1 (de) * 1992-05-14 1992-09-24 ASF, Gesellschaft für elektrotechnische Geräte mbH, 8039 Puchheim Schlauchpumpe
FR2737261B1 (fr) * 1995-07-27 1997-10-10 Jean Francois Ognier Pompe peristaltique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US819690A (en) * 1905-04-28 1906-05-01 Bryson & Howe Cycle-pump.
US2899904A (en) * 1959-08-18 Roller pump
US2899906A (en) * 1959-08-18 Roller pumps
US3249059A (en) * 1964-03-31 1966-05-03 Everpure Peristaltic-type pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899904A (en) * 1959-08-18 Roller pump
US2899906A (en) * 1959-08-18 Roller pumps
US819690A (en) * 1905-04-28 1906-05-01 Bryson & Howe Cycle-pump.
US3249059A (en) * 1964-03-31 1966-05-03 Everpure Peristaltic-type pump

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724974A (en) * 1970-08-28 1973-04-03 Logeais Labor Jacques Peristaltic pump
US3787148A (en) * 1972-09-26 1974-01-22 Kopf D Syst Roller pump
US3990444A (en) * 1972-11-22 1976-11-09 Vial S.A.R.L. Blood transfusion apparatus
US4113409A (en) * 1976-02-03 1978-09-12 Messerschmitt-Bolkow-Blohm Gesellschaft Mit Beschrankter Haftung Hose pump with friction drive of hollow, resilient roller means
US4187057A (en) * 1978-01-11 1980-02-05 Stewart-Naumann Laboratories, Inc. Peristaltic infusion pump and disposable cassette for use therewith
US4201525A (en) * 1978-07-05 1980-05-06 Baxter Travenol Laboratories, Inc. Peristaltic pump
US4231725A (en) * 1978-10-16 1980-11-04 Cole-Parmer Instrument Company Peristaltic pump
EP0019818A1 (de) * 1979-05-23 1980-12-10 Siemens Aktiengesellschaft Rollenpumpe
US4515584A (en) * 1982-07-06 1985-05-07 Fujisawa Pharmaceutical Co., Ltd. Artificial pancreas
EP0164020A1 (en) * 1984-05-25 1985-12-11 ISCO, Inc. Peristaltic pump
US4673334A (en) * 1984-05-25 1987-06-16 Isco, Inc. Peristaltic pump
US4886431A (en) * 1988-04-29 1989-12-12 Cole-Parmer Instrument Company Peristaltic pump having independently adjustable cartridges
US5044902A (en) * 1989-03-13 1991-09-03 Edouard Malbec Cartridge for peristaltic pump with a flexible tube, and peristaltic pump fitted with such a cartridge
US5082429A (en) * 1990-08-28 1992-01-21 Cole-Parmer Instrument Company Peristaltic pump
WO1993024755A1 (en) * 1992-06-03 1993-12-09 Allergan, Inc. Reduced pulsation tapered ramp pump head
US5470211A (en) * 1993-08-12 1995-11-28 Stockert Instrumente Gmbh Roller pump
US20050159708A1 (en) * 2002-07-24 2005-07-21 Rudolf Sidler Infusion pump, control program, semiconductor means and method for the dosed administration of a medicinal liquid
US8157547B2 (en) * 2006-04-21 2012-04-17 Bredel Hose Pumps B.V. Peristaltic pump with flow control
US20070258829A1 (en) * 2006-04-21 2007-11-08 Bredel Hose Pumps B.V. Peristaltic pump
US20100006316A1 (en) * 2008-07-09 2010-01-14 Brandon Begnaud Protective cover plate
US11131300B2 (en) 2010-01-22 2021-09-28 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump
US11578716B2 (en) 2010-01-22 2023-02-14 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump
US11898546B2 (en) 2010-01-22 2024-02-13 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump
US12264663B2 (en) 2010-01-22 2025-04-01 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump
US20110305588A1 (en) * 2010-06-09 2011-12-15 Seiko Epson Corporation Fluid transporter
US9140252B2 (en) * 2010-06-09 2015-09-22 Seiko Epson Corporation Fluid transporter
WO2013023939A1 (en) 2011-08-17 2013-02-21 Nestec S.A. Linear peristaltic pump
US20140330200A1 (en) * 2011-11-23 2014-11-06 Bamed Ag Breast pump
US9814812B2 (en) * 2011-11-23 2017-11-14 Bamed Ag Breast pump
US9777720B2 (en) * 2013-03-14 2017-10-03 Blue-White Industries, Ltd. High pressure, high flow rate tubing assembly and adapter for a positive displacement pump
US20140271293A1 (en) * 2013-03-14 2014-09-18 Blue-White Industries, Ltd. High pressure, high flow rate tubing assembly and adapter for a positive displacement pump
RU167996U1 (ru) * 2016-08-23 2017-01-16 Общество с ограниченной ответственностью "Научно-производственное предприятие "Неовакс" Печатная головка 3D принтера
CN115681103A (zh) * 2022-09-29 2023-02-03 深圳市德宇鑫科技有限公司 蠕动泵

Also Published As

Publication number Publication date
DE1553005C3 (de) 1974-03-14
SE325201B (cs) 1970-06-22
DE1553005B2 (de) 1973-08-16
DE1553005A1 (de) 1969-09-25
CH433992A (de) 1967-04-15
GB1105236A (en) 1968-03-06

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