WO1994003728A1 - Pompe peristaltique - Google Patents

Pompe peristaltique Download PDF

Info

Publication number
WO1994003728A1
WO1994003728A1 PCT/EP1993/002018 EP9302018W WO9403728A1 WO 1994003728 A1 WO1994003728 A1 WO 1994003728A1 EP 9302018 W EP9302018 W EP 9302018W WO 9403728 A1 WO9403728 A1 WO 9403728A1
Authority
WO
WIPO (PCT)
Prior art keywords
hose
rotor
support
peristaltic pump
squeeze body
Prior art date
Application number
PCT/EP1993/002018
Other languages
German (de)
English (en)
Inventor
Manfred Streicher
Original Assignee
Alfa Laval Flow Gmbh
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 Alfa Laval Flow Gmbh filed Critical Alfa Laval Flow Gmbh
Priority to AU47040/93A priority Critical patent/AU4704093A/en
Publication of WO1994003728A1 publication Critical patent/WO1994003728A1/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

Definitions

  • the invention relates to a peristaltic pump as used for the conveyance of liquid or pasty media.
  • peristaltic pumps Compared to other types of pumps such as reciprocating pumps, rotary lobe pumps etc., peristaltic pumps have the advantage that the pumped medium does not come into contact with any mechanical parts of the pump, but only with the inside of the delivery hose.
  • Peristaltic pumps are known (DE-OS 33 20 091). Peristaltic pumps have a housing with a suction port and a pressure port. A delivery hose is connected to this connector. The delivery hose lies on the outside of a support within the housing. From the inside, the conveyor hose is compressed by at least one squeeze part, which is fastened to a drivable rotor in such a way that the hose can be squeezed together in its longitudinal direction between the circumferential squeeze body and the support. The rotor is rotatably supported in the housing. Very high forces act on the squeeze body and thus also on the rotor. These have to be taken up by the bearing axis of the rotor and transferred to the housing construction.
  • the invention is based on the problem, based on this prior art, of specifying an improved hose pump.
  • the invention is accordingly characterized in that the peristaltic pump has an endlessly revolving support path for its rotor, on which the rotor is held in a radial direction.
  • a peristaltic pump has the advantage that the high forces acting on the rotor cannot be absorbed by the bearing axis of the rotor, but by the rotating support track. The forces acting on the rotor via the squeeze body are therefore not conducted into the rotor's rotating shaft.
  • the peristaltic pump can thus be made lighter and also structurally simpler. This makes it possible to manufacture peristaltic pumps with a larger diameter with comparable effort and weight.
  • the hose can be squeezed together in succession, in extreme cases with only a single squeeze body, in such a way that the flexing work which places a great strain on the hose remains extremely low.
  • the conveyor hose can be easily and quickly removed or installed due to the different type of housing construction.
  • the runners are present like tendons within the support track.
  • the runners support each other on the support track, so that they only have to be driven to be movable along this support track.
  • the rotary drive for the rotor therefore does not need to act on the rotor in a radial effect. to absorb the forces. These radial forces are absorbed by the rotating rotors via the support track.
  • the pressure equalization can take place within a larger period of time than is currently possible in the prior art.
  • the so enabling appropriate encryption form the seat in the area of the suction nozzle or the Druck ⁇ is basically for all peristaltic pumps and not just in the inventive sleeps' also pump meaningful.
  • the hose pump has two circular paths which are adjacent to one another at a constant mutual distance.
  • the support for the conveyor hose is present between the two tracks.
  • the runners roll on the two tracks so that they do not strain the hose.
  • a squeeze body is fastened to at least one of the runners in such a way that when the runners roll off, the squeeze body also rotates at the same time and thus squeezes the conveyor hose all the way round and thus completely one after the other.
  • FIG. 1 shows a partially sectioned side view of a hose pump according to the invention
  • FIG. 2 shows a cross section with a partial side view of the suction pump according to FIG. 1 in a different, vertically oriented rotational position compared to FIG
  • FIG 3 shows a partial cross section for another embodiment of a peristaltic pump.
  • a peristaltic pump 10 has two circular rings 12, 14 lying side by side. Both rings 12, 14 are rectangular in cross section (FIG. 2).
  • Both rings 12, 14 have a common central axis 16, which is also the central axis for an axis of rotation 18. This axis of rotation 18 is overhung within the rings 12, 14, so that the axis of rotation 18 can be part of a flexible rotary drive.
  • the axis of rotation 18 is via two pairs of arms 22, 24, whose arms 22 and 24 in opposite directions from one on the
  • Layers lie, each connected to a bearing axis 26, 28.
  • the two pairs of arms 22, 24 are connected in the area of the central axis 16 via the sleeve 30.
  • the turning axis 18 is connected in a rotationally fixed manner to this sleeve 30, so that when the axis 18 is rotated, the sleeve 30 and thus also the arms 22, 24 are set in rotation.
  • the wheels 30, 34 run on the inside on one ring 12 and the wheels 32, 36 on the inside on the adjacent other ring 14 from.
  • a pinch roller 38 and 40 is provided on the bearing axis 26 and 28 in the middle space between the arms 22 and 24, respectively. These pinch rollers are also rotatably mounted on the bearing axis 26 or 28.
  • a conveying hose 42 is present between the two rings 12, 14.
  • This hose 42 has at its one upper end a connection to a so-called suction nozzle 44 and at its other upper end a connection to a so-called pressure nozzle, as is usually the case with hose pumps.
  • the tube 42 is bent in a circle in the lower half of the rings 12, 14. In this area it 42 rests on a support 50 which is also circularly curved in this lower area (FIG. 1).
  • the support 50 is connected as a bridge part on the outside to the two rings 12, 14.
  • the support 50 is in turn held constructively in a base 56.
  • the open top support 50 is connected by a U-shaped bracket 58.
  • the bracket 58 serves as a holder for the two connecting pieces 44, 46.
  • the bracket 58 could also be attached to the two rings 12, 14.
  • the screw and connection connections for the formation of the suction nozzle 44 and pressure nozzle 46 are held.
  • the bracket 58 thus forms a bridge from the suction port 44 to the pressure port 46.
  • the rest of the peristaltic pump 10 is open, which means that there are no all-round closed housing parts. If the hose pump were to be designed as a vacuum pump, the area around the delivery hose 42 would have to be encapsulated against the external pressure.
  • the rings 12, 14 together with the support 50 are shaped so that the squeezed tube 42 can be squeezed completely free of constraint by the pinch roller 40 or 38 and, on the other hand, is also held laterally immovably.
  • the arrangement of the rollers 30, 32, 34, 36 is interchanged with the arrangement of the arms 22, 24, so that the respective pinch roller 38, 40 is not next to the arms 22, 24 as in FIG. 2 , but is next to the wheels 30, 32 and 34, 36, respectively.
  • the support 50 has in the connection area of the suction port 44 or pressure port 46 an area 70 which has a counter-curvature between a lower point 72 and an upper point 74, which are indicated by the end of an arrow 76. While the upper point 74 opens tangentially into the orientation of the connecting piece 44 or 46, at the lower point 72 the area 70 adjoins the circular shape of the support 50 below the axis of rotation 18. Because of this shaping of the area 70 provided with a counter-curvature, it is achieved that when the respective squeezing roller 38, 40 rolls off, the inner cross section of the hose 42 does not open or close abruptly, but rather that this opens or closes within the area 70 over a longer hose length (arrow 72).
  • the hose will not suddenly change from its closed to its open cross-section, but this transition will take place over a larger path area and thus also over a larger period of time.
  • This allows the pressure to be equalized within the hose over an extended period of time.
  • the dimension of the area 70 in which the support 50, against which the hose 42 rests, is warped depends on the orientation and arrangement of the suction ports 44, 46 in relation to the pinch rollers 38, 40. This corresponding warping of area 70 is not only for the peristaltic pump 10 according to the invention, but also in a very essential manner in the same way for all peristaltic pumps 10 in general.
  • this rotary drive could also be effected by directly driving the wheels 30, 32, 34, 36.
  • the rings 12 and / or 14 could have teeth, along which rollers 30, 32, 34, 36, which were also arranged with teeth, could roll.

Landscapes

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

Abstract

Une pompe péristaltique qui achemine des liquides ou des pâtes, comprend un boîtier muni d'un raccord d'aspiration (44) et d'un raccord de refoulement (46), un tuyau flexible de circulation (42) reliant ces deux raccords. Un rotor (22, 24) entraîné par une commande rotative muni d'au moins un élément d'étranglement (38, 40) comprime le tuyau flexible (42) contre une surface d'appui du flexible (50). Le tuyau flexible (42) est comprimé progressivement dans son sens longitudinal. Afin d'éviter que les forces élevées qui apparaissent lors du travail d'écrasement ne soient absorbées par l'arbre moteur du rotor, l'invention prévoit une bande d'appui (12, 14) tournant en continu autour du rotor (22, 24) et par laquelle le rotor est soutenu dans le sens radial.
PCT/EP1993/002018 1992-07-30 1993-07-29 Pompe peristaltique WO1994003728A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU47040/93A AU4704093A (en) 1992-07-30 1993-07-29 Peristaltic pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG9210211.5U 1992-07-30
DE9210211U DE9210211U1 (de) 1992-07-30 1992-07-30 Schlauchpumpe

Publications (1)

Publication Number Publication Date
WO1994003728A1 true WO1994003728A1 (fr) 1994-02-17

Family

ID=6882166

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/002018 WO1994003728A1 (fr) 1992-07-30 1993-07-29 Pompe peristaltique

Country Status (4)

Country Link
AU (1) AU4704093A (fr)
DE (1) DE9210211U1 (fr)
WO (1) WO1994003728A1 (fr)
ZA (1) ZA935466B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2495935A (en) * 2011-10-25 2013-05-01 Watson Marlow Ltd Peristaltic pump with tube end fitting
WO2018172217A1 (fr) 2017-03-23 2018-09-27 Medela Holding Ag Dispositif présentant une unité de pompe péristaltique pouvant être accouplée
US10344752B2 (en) 2011-10-25 2019-07-09 Watson-Marlow Ltd. Peristaltic pump having a leaking tube detecting chamber

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114922802A (zh) * 2022-04-14 2022-08-19 山东鸣川汽车集团有限公司 一种新型蠕动泵

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757838A (en) * 1953-06-25 1956-09-26 Dunlop Rubber Co Improvements in or relating to flexible tube pumps
GB1023193A (en) * 1963-09-17 1966-03-23 Herbert George Burks Rotary pumps of the flexible tube type
CH482922A (fr) * 1968-10-25 1969-12-15 Kustner Freres Et Cie S A Pompe à action péristaltique
US3964479A (en) * 1974-11-20 1976-06-22 Cobe Laboratories, Inc. Extracorporeal blood circulation system and drip chamber with adjustable blood level

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7406822U (de) * 1974-06-06 Passavant Werke Michelbacher Huette Peristaltische Pumpe
DE2140872A1 (de) * 1971-08-14 1973-02-22 Richard Trappe Beton-schlauchpumpe mit einem durch planetenradantrieb in drehbewegung versetzten rotor
DE2432007A1 (de) * 1974-07-03 1976-01-22 Asf Gmbh Schlauchpumpe
DE3320091A1 (de) * 1983-06-03 1984-12-06 Streicher, Irmgard, 7141 Beilstein Schlauchpumpe
DD272036A1 (de) * 1988-05-09 1989-09-27 Karl Marx Stadt Tech Hochschul Radialperistaltikschlauchpumpe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757838A (en) * 1953-06-25 1956-09-26 Dunlop Rubber Co Improvements in or relating to flexible tube pumps
GB1023193A (en) * 1963-09-17 1966-03-23 Herbert George Burks Rotary pumps of the flexible tube type
CH482922A (fr) * 1968-10-25 1969-12-15 Kustner Freres Et Cie S A Pompe à action péristaltique
US3964479A (en) * 1974-11-20 1976-06-22 Cobe Laboratories, Inc. Extracorporeal blood circulation system and drip chamber with adjustable blood level

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2495935A (en) * 2011-10-25 2013-05-01 Watson Marlow Ltd Peristaltic pump with tube end fitting
US9822775B2 (en) 2011-10-25 2017-11-21 Watson-Marlow Limited Peristaltic pump and pumphead therefor
US10344752B2 (en) 2011-10-25 2019-07-09 Watson-Marlow Ltd. Peristaltic pump having a leaking tube detecting chamber
WO2018172217A1 (fr) 2017-03-23 2018-09-27 Medela Holding Ag Dispositif présentant une unité de pompe péristaltique pouvant être accouplée
US11486382B2 (en) 2017-03-23 2022-11-01 Medela Holding Ag Device with a peristaltic pump unit which can be coupled

Also Published As

Publication number Publication date
AU4704093A (en) 1994-03-03
ZA935466B (en) 1995-06-29
DE9210211U1 (de) 1992-10-22

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