EP0334898B1 - Pompe peristaltique - Google Patents

Pompe peristaltique Download PDF

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Publication number
EP0334898B1
EP0334898B1 EP88901228A EP88901228A EP0334898B1 EP 0334898 B1 EP0334898 B1 EP 0334898B1 EP 88901228 A EP88901228 A EP 88901228A EP 88901228 A EP88901228 A EP 88901228A EP 0334898 B1 EP0334898 B1 EP 0334898B1
Authority
EP
European Patent Office
Prior art keywords
hose
rotor
pump
union
wall
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
EP88901228A
Other languages
German (de)
English (en)
Other versions
EP0334898A1 (fr
Inventor
Fritz Kielwein
Manfred Streicher
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.)
Crane Process Flow Technologies GmbH
Original Assignee
KWW Gesellschaft fuer Verfahrenstechnik mbH
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 KWW Gesellschaft fuer Verfahrenstechnik mbH filed Critical KWW Gesellschaft fuer Verfahrenstechnik mbH
Priority to AT88901228T priority Critical patent/ATE62530T1/de
Publication of EP0334898A1 publication Critical patent/EP0334898A1/fr
Application granted granted Critical
Publication of EP0334898B1 publication Critical patent/EP0334898B1/fr
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

Definitions

  • the invention relates to a hose pump, in which the restoring force for the hose is brought about by negative pressure in the suction space.
  • the separating device has a band which is mounted on the housing between the pressure and suction nozzle in a rotationally fixed manner and which extends from the front wall to the rear wall, in order thereby to seal the suction chamber from the pressure chamber.
  • the circumference of the band is somewhat larger than the circumference of the rotor and the band is firmly connected to the housing at a point between the suction and pressure ports.
  • the band is placed directly around the rotor and it is connected to the housing via a slide. The slide runs in a guide arranged between the suction and discharge ports, which is oriented towards the axis of the rotor.
  • the invention has for its object to provide a peristaltic pump in which the hose is reset by negative pressure in the suction chamber, in which pump it is ensured that the negative pressure is maintained
  • the peristaltic pump according to the invention has the features a) to e) listed above and is distinguished by the fact that there is no longer a non-rotatable sealing tape in which the rotor rotates, but that the separating device has a rotor sealing device which is firmly connected to the rotor is, so it rotates with this and the Seals runner against the front and rear wall.
  • the separating device has a rotor sealing device which is firmly connected to the rotor is, so it rotates with this and the Seals runner against the front and rear wall.
  • there is an elastic sealing device in the area between the suction and discharge ports which seals the cross-section between the rotor and the circumferential wall, as well as the front and rear wall, which changes constantly when rotating
  • Peristaltic pumps designed in this way have the advantage that sealing fluid is continuously transported by the rotating rotor sealing device, which means that the entire circumference of the rotor sealing device is always well sealed.
  • the sealing tape In the known pumps, in which the rotor rotated in the non-rotatably mounted sealing tape, the sealing tape only moved back and forth, which in part led to the sealing liquid being wiped away and not refilled, which resulted in leaks.
  • a hose pump according to the invention is particularly simple in construction if the elastic sealing device is formed by an elastic piece of hose, the axis of which is parallel to the axis of the rotor and which extends from the front wall to the rear wall of the housing.
  • this sealing device can only be used up to relatively low speeds. If reliable sealing is to be ensured even at high speeds, it is advantageous to use an elastic sealing device which is designed as a spring-loaded oscillating plate or spring-loaded slide.
  • the housings of all peristaltic pumps described here have two nozzles, of which the left one is referred to below as the suction nozzle 20 and the right one as the pressure nozzle 21.
  • the direction of rotation 22 corresponds to the counterclockwise direction in the illustrations. In all cases, however, the direction of rotation can be reversed without any problems, whereby the suction nozzle becomes the pressure nozzle and vice versa.
  • the two connecting pieces 20 and 21 are attached to a flat upper area 23.1 of the peripheral wall of the housing.
  • the peripheral wall also has a circular cylindrical squeeze area 23.2.
  • the two ends of the suction nozzle 20 and pressure nozzle 21 protruding into the pump interior are connected to one another via a hose 24 which does not have its own resilience.
  • the hose 24 is laid along the pinch area 23.2 of the peripheral wall. There, however, it does not lie directly on the metallic peripheral wall of the housing, but rather it rests on a cushion layer 25 which runs along the squeezing area 23.2.
  • a rotor 26 with three rotationally symmetrical crimping bodies is also arranged in the pump interior.
  • the rotor 26 and the squeeze body 27 form a cylindrical outer surface 28 on the outside.
  • a sealing ring 29 runs along each of the two edges of this outer surface 28.
  • One of these sealing rings 29 lies sealingly against the flat front wall 30 of the housing, while the other sealing ring rests against it the flat rear wall 31 abuts.
  • a piece of hose 33 is fastened between the suction port 20 and the pressure port 21 by means of fastening screws 23.
  • This lies with its axis parallel to the axis of the runner. It extends from the front wall 30 to the rear wall 31. Its elasticity, its diameter and the distance between the upper region 23.1 of the peripheral wall and the lateral surface 28 are selected such that the tube piece 33 always lies sealingly against the lateral surface 28, regardless of this whether a squeeze body 27 is running through, or such a location on the lateral surface that is less distant from the axis of the rotor than the vertex of a squeeze body 27.
  • FIG. 1 shows the state in which between the lateral surface 28 and the upper region 23.1 the circumferential wall has the smallest distance since a squeeze body 27 is passing right at the top.
  • the position of the tube piece 23 is drawn in dash-dotted lines, which it occupies when the lateral surface 28 is at the greatest distance from the upper region 23.1 of the peripheral wall.
  • a small amount of a lubricating and sealing liquid 34 is present in the interior of the pump, preferably silicone oil.
  • the circumference of the hose 24 is dimensioned such that it essentially corresponds to twice the distance between the front wall 30 and the rear wall 31.
  • FIGS. 3 and 4 show variations of the sealing part fastened to the upper region 23.1 of the peripheral wall, which is formed by the tube piece 33 in the embodiment according to FIGS. 1 and 2, in the embodiment 3, the sealing part is formed by a vibrating plate 36 and in the embodiment according to FIG. 4 by a slide 37.
  • the vibrating plate 36 of the embodiment according to FIG. 3 is connected to the upper region 23.1 of the peripheral wall via a joint 38. It is covered at the bottom with a sealing covering 39 which merges sealingly with the upper region 23.1 of the peripheral wall.
  • the sealing covering 39 seals against the outer surface 28 and the front wall 30 and the rear wall 31 and, moreover, the upper region 23.1. So that the vibrating plate 36 with the sealing covering 39 always lies tightly against the outer surface 28, it is pressed by a spring 40 in the direction of the outer surface 28.
  • the slide 37 extends over the entire width of the interior of the housing from the front wall 30 to the rear wall 31. It is oriented towards the axis of the rotor 26 and is displaceable in this direction in a guide 41 which is guided by the upper region 23.1 of the peripheral wall is firmly connected. The slide 37 is pressed onto the lateral surface 28 by the force of a spring 40.
  • FIGS. 3 and 4 have the advantage over the embodiment of FIG. 1 that the force of the spring 40 used in each case always ensures that the sealing part _ oscillating plate 36 or slide 37 _ lies securely on the lateral surface 28.
  • the construction with the tube piece 33 is particularly simple. It is sufficient for slow speeds.
  • the arrangement and number of the squeeze bodies used is not important in pumps according to the invention, as long as at least two squeeze bodies are used.
  • It can be stationary squeeze bodies, as shown in Fig. 1, or the squeeze bodies can be ball-bearing rollers.
  • the squeeze bodies can have a hard surface, or they can be provided with a cushion in accordance with the cushion layer 25 on the squish area 23.2 of the peripheral wall.
  • Such pads serve to ensure that larger pumped bodies are not smashed by the action of the squeeze body, but rather that if they are not easily pushed in the conveying direction, they are pressed into the padding layers as they pass through a squeeze body.
  • the pumps can be driven in any way. Drives with low starting torque can also be used, since only a low starting torque is required for all peristaltic pumps according to the invention, since no hard elastic, self-erecting hose has to be used.

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

Abstract

Une pompe péristalique préférée se différencie des pompes péristaltiques traditionnelles par le fait que son espace intérieur est entièrement rempli d'un liquide (34). Dans ce cas, on peut utiliser un tuyau (24) mou au lieu d'un tuyau élastique dur se redressant automatiquement. On peut ainsi atteindre des vitesses de rotation élevées et portant, des débits élevés avec un encombrement minime. La hauteur d'aspiration se règle automatiquement sur la hauteur d'aspiration précisément exigée dans chaque cas. La pompe aspire aussi à de très faibles régimes, tant que l'écrasement du tuyau ne provoque pas de reflux. Le tuyau mou utilisable permet un écrasement notablement supérieur à un tuyau élastique dur reprenant sa forme automatiquement.

Claims (5)

1. Pompe à noyau flexible comprenant:
a) une enveloppe comportant:
a1) une tubulure d'aspiration (20) et une tubulure de compression (21),
a2) une paroi périphérique qui, au moins dans une zone d'écrasement (23.2) située le long de la longue pièce de liaison comprise entre la tubulure d'aspiration et la tubulure de compression, a la forme d'un cylindre de section circulaire et
a3) une paroi avant plane (30) et une paroi arrière plane (31),
b) un tuyau flexible (24)
b1) qui va de la tubulure d'aspiration à la tubulure de compression le long de la paroi périphérique dans la zone d'écrasement et
b2) dont la périphérie correspond essentiellement au double de la distance comprise entre la paroi avant et la paroi arrière,
c) un rotor (26)
c1) dont l'axe de rotation coïncide avec l'axe de la zone d'écrasement de la paroi périphérique en forme de cylindre de section circulaire,
c2) qui comporte au moins deux corps d'écrasement disposés symétriquement par rapport à un point et
c3) qui tourne de telle manière que chaque corps d'écrasement écrase le tuyau flexible depuis la zone de la tubulure d'aspiration jusqu'à la zone de la tubulure de compression.
d) un liquide d'étanchéité (34) contenu dans l'enveloppe et
e) un dispositif de séparation qui isole hermétiquement une zone d'aspiration (35), c'est-à-dire une partie de l'intérieur de la pompe dans laquelle une dépression régne pendant le pompage, d'une zone de compression (42) dans laquelle ne règne aucune dépression,
caractérisée en ce que:
- le dispositif de séparation comporte un dispositif (29) assurant l'étanchéité au niveau du rotor et un joint élastique (32, 36, 37),
- le dispositif assurant l'étanchéité au niveau du rotor est solidaire du rotor et sépare hermétiquement celui-ci de la paroi avant et de la paroi arrière et
- le dispositif élastique assurant l'étanchéité est placé entre la tubulure d'aspiration et la tubulure de compression et a une structure élastique telle qu'il assure l'étanchéité au niveau de la section transversale, de dimensions sans cesse changeantes, au cours de la rotation du rotor, qui se trouve entre le rotor, qui se trouve entre le rotor et la paroi périphérique ainsi qu'entre la paroi avant et la paroi arrière.
2. Pompe à tuyau flexible selon la revendication 1, caractérisée en ce que le dispositif assurant l'étanchéité au niveau du rotor est constitué par deux bagues d'étanchéité (29) qui sont montées au niveau des bords périphérique du rotor (26) tournés vers la paroi avant (30) ou la paroi arrière (31).
3. Pompe à tuyau flexible selon la revendication 1, caractérisée en ce que le dispositif élastique d'étanchéité est constitué par un morceau de tuyau flexible élastique (33) dont l'axe est parallèle à l'axe du rotor (26) et qui va de la paroi avant (30) à la paroi arrière (31).
4. Pompe à tuyau flexible selon la revendication 1, caractérisée en ce que le dispositif élastique d'étanchéité est constitué par une plaque pivotante (36) dont l'axe de pivotement est parallèle à l'axe du rotor (26), qui s'étend de la paroi avant (30) à la paroi arrière (31) et qui s'applique tangentiellement contre le rotor.
5. Pompe à tuyau flexible selon la revendication 1, caractérisée en ce que le dispositif élastique d'étanchéité est constitué par une pièce coulissante (37) qui est poussée contre le rotor (26) par un ressort (40) et qui s'étend de la paroi avant (30) à la paroi arrière (31).
EP88901228A 1987-02-03 1988-02-02 Pompe peristaltique Expired - Lifetime EP0334898B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88901228T ATE62530T1 (de) 1987-02-03 1988-02-02 Schlauchpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873703124 DE3703124A1 (de) 1987-02-03 1987-02-03 Schlauchpumpe
DE3703124 1987-02-03

Publications (2)

Publication Number Publication Date
EP0334898A1 EP0334898A1 (fr) 1989-10-04
EP0334898B1 true EP0334898B1 (fr) 1991-04-10

Family

ID=6320091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88901228A Expired - Lifetime EP0334898B1 (fr) 1987-02-03 1988-02-02 Pompe peristaltique

Country Status (3)

Country Link
EP (1) EP0334898B1 (fr)
DE (2) DE3703124A1 (fr)
WO (1) WO1988005868A2 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1220167B (it) * 1987-12-18 1990-06-06 Renato Vicentini Pompa volumetrica per fluidi liquidi o gassosi perfezionata
JPH0740441B2 (ja) * 1990-08-17 1995-05-01 株式会社小糸製作所 自動車用前照灯装置
DE4214917A1 (de) * 1992-05-11 1993-11-18 Allweiler Ag Schlauchpumpe
DE4303319A1 (de) * 1993-02-05 1994-08-11 Putzmeister Maschf Vakuum-Pumpeinrichtung
GB2325710B (en) * 1997-05-30 2001-10-10 Bredel Hose Pumps B V A peristaltic pump
US6099272A (en) * 1997-09-18 2000-08-08 Fsi International Peristaltic pump with flow control
FR2787835B1 (fr) * 1998-12-23 2004-09-24 Centre Nat Rech Scient Compresseurs peristaltiques adaptes a la compression non relaxante de gaz polarise
IL128289A (en) * 1999-01-29 2001-08-08 Peristal Tec Temed Ltd Compression or expansion device
FR2789736A1 (fr) * 1999-02-11 2000-08-18 Joseph Ferrandez Pompe a flux continu de type peristaltique comprenant un corps de pompe
GB2349431B (en) * 1999-04-29 2002-06-12 Watson Marlow Ltd Peristaltic pumps
NL1012039C2 (nl) * 1999-05-11 2000-11-14 Bornhoud B V Pomp met vacu³mmiddelen.
US20010016706A1 (en) * 1999-08-31 2001-08-23 Kurt D. Leukanech Peristaltic pump
DE10357320A1 (de) * 2003-12-05 2005-06-30 Crane Process Flow Technologies Gmbh Schlauchpumpe mit Vorrichtung zur Vakuumerzeugung
WO2006024192A1 (fr) * 2004-09-03 2006-03-09 Ismatec Sa. Laboratoriumstechnik Pompe peristaltique
NL2000032C2 (nl) * 2006-03-20 2007-09-21 Bredel Hose Pumps B V Peristaltische pomp, werkwijze voor het vervaardigen van een slang daarvoor, en slang voor een dergelijke pomp.
NL2000167C2 (nl) * 2006-07-28 2008-01-29 Bredel Hose Pumps B V Peristaltische pomp.
GB2495937A (en) * 2011-10-25 2013-05-01 Watson Marlow Ltd Peristaltic pump head with auxiliary leakage chamber
GB201421964D0 (en) 2014-12-10 2015-01-21 Hodges & Drake Design Ltd Peristaltic pumps
DE102017104395A1 (de) 2017-03-02 2018-09-06 Qonqave Gmbh Pumpenvorrichtung zu einer Förderung zumindest eines Fördermittels
GB2602343B (en) * 2020-12-24 2023-02-22 Hodges & Drake Design Ltd Peristaltic pumps

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855505C (de) * 1940-03-14 1952-11-13 Hoechst Ag Schlauchpumpe
GB713239A (en) * 1952-08-20 1954-08-04 Ames Crosta Mills & Company Lt Improvements in and relating to flexible tube pumps
FR1272699A (fr) * 1960-10-19 1961-09-29 Simon Ltd Henry Pompe perfectionnée à tube flexible
DE3320091A1 (de) * 1983-06-03 1984-12-06 Streicher, Irmgard, 7141 Beilstein Schlauchpumpe
DE3320090A1 (de) * 1983-06-03 1984-12-06 Streicher, Irmgard, 7141 Beilstein Verdraengerpumpe

Also Published As

Publication number Publication date
WO1988005868A3 (fr) 1988-10-06
DE3703124A1 (de) 1988-08-11
WO1988005868A2 (fr) 1988-08-11
DE3862374D1 (de) 1991-05-16
EP0334898A1 (fr) 1989-10-04

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