EP0394383B1 - Pompe peristaltique - Google Patents

Pompe peristaltique Download PDF

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Publication number
EP0394383B1
EP0394383B1 EP89908964A EP89908964A EP0394383B1 EP 0394383 B1 EP0394383 B1 EP 0394383B1 EP 89908964 A EP89908964 A EP 89908964A EP 89908964 A EP89908964 A EP 89908964A EP 0394383 B1 EP0394383 B1 EP 0394383B1
Authority
EP
European Patent Office
Prior art keywords
hose
housing
pump
interior
constrictor
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
EP89908964A
Other languages
German (de)
English (en)
Other versions
EP0394383A1 (fr
Inventor
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
Publication of EP0394383A1 publication Critical patent/EP0394383A1/fr
Application granted granted Critical
Publication of EP0394383B1 publication Critical patent/EP0394383B1/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
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • F04B43/0072—Special features particularities of the flexible members of 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

Definitions

  • the invention relates to a peristaltic pump with a housing having a pressure port and a suction port, a hose which is connected to both the pressure port and the suction port and bears against the inner wall of the housing, at least two squeeze bodies which can thus be moved along the hose that this hose can be squeezed through each squeeze body from the direction of the suction nozzle in the direction of the pressure nozzle, at least one or an elastically deformable tube or channel in the interior of the housing, which or by the movement of the squeeze body from the direction of its one end in the direction can be squeezed to its other end.
  • an outer hose is provided which concentrically surrounds an inner hose.
  • the inner hose is used for the actual media delivery.
  • the space between the two hoses is constantly connected at both ends to a lubricant reservoir. As a result, a constant lubricant circulation can occur in this space during pump operation. If a squeeze body moves a little further on the hose, the cavity created within the lubricant creates a negative pressure.
  • the lubricating liquid located in this space between the two tubes thus serves the purpose of ensuring that the inner tube does not remain squeezed together when the squeeze body acting on it has passed.
  • EP-A-130 374 also discloses the use or cooperation of two hoses for appropriately supporting the pumping process. Here, however, the second hose is not actuated to create a vacuum, but rather is acted upon to produce a pressure cushion.
  • the invention has for its object to provide a peristaltic pump of the type mentioned, which is simple in construction and in which the restoring forces can be activated by vacuum in the size desired with certainty.
  • the peristaltic pump according to the invention is accordingly characterized in that one end of the tube or the channel is connected to the inside of the housing in order to generate a negative pressure, while the other end opens out to the atmosphere outside the housing.
  • the invention is thus based on the knowledge that when the peristaltic pump is operated by squeezing this second tube together - in the same way as is done with the delivery hose - air can be forced out of the interior of the housing, as a result of which a vacuum is maintained in the interior of the housing or can generate.
  • This second hose can be very small in diameter.
  • the hose for the actual conveying does not need to be elastically deformable, since the vacuum created inside the pump housing causes the hose that serves to promote the media to straighten up again in its normal - round - cross-sectional shape when the squeezing body of the rotor acting on it comes on has passed the location in question.
  • the second hose that is used to maintain or create of the vacuum inside the peristaltic pump can be arranged inside the peristaltic pump in such a way that the first squeeze bodies, which are used to squeeze the delivery hose together, can also be used as the second squeeze bodies, which are present for creating or maintaining the vacuum. This brings a considerable simplification of the construction principle of such a hose pump.
  • the hose pump according to the invention can only function fully when the required negative atmospheric pressure has built up inside.
  • the second hose is connected via a check valve to the atmosphere surrounding the housing, which opens in the direction of the atmosphere.
  • the peristaltic pump When the peristaltic pump is not in operation, no air can penetrate into the interior of the housing, so that the vacuum present in each case is not lost, even if the squeeze body should not lie close to the second tube when the peristaltic pump is at a standstill, which is for the longest possible service life of the tube may be desirable.
  • Such a hose pump delivers its full performance almost immediately.
  • a further simplification results if the second hose is present within the wall of the first hose.
  • the second hose is also laid at the same time. This ensures that the second hose is always in the correct position with respect to the first hose and thus to the existing squeeze bodies.
  • a simple way of producing this second hose can be achieved if the second hose is formed by a cavity in the wall of the first hose.
  • An actual hose wall for the second hose is therefore superfluous, since the second hose is then can only represent a channel-like opening and thus a recess in the wall of the first hose.
  • the second hose or the channel-like cavity in the first hose is present in the hose jacket closer to the inside than to the outside of the first hose.
  • the second hose must be arranged circumferentially in the first hose so that when the first hose is squeezed, its cross section is also fully squeezed together.
  • the second hose will therefore preferably be present in the bending area of the first hose. Since it is also positioned more on the inside than on the outside of the first hose, it is present in the jacket region of the first hose which is maximally stressed when squeezed together.
  • the jacket region surrounding this second hose will first tear inwards, so that the inside of this second hose is connected to the interior of the first hose.
  • This has the great advantage that when the peristaltic pump is operated, the respective medium conveyed in the first hose emerges from the opening of the "second hose".
  • the squeeze body When the squeeze body is operated, the medium conveyed in the first tube is pressed into and out of the second tube. This can be determined by suitable monitoring devices and the tube pump can then be brought to a standstill immediately.
  • the second hose thus acts as a hose monitor for the main hose, as it lies in the area at maximum risk and can therefore immediately indicate that the main hose has cracks and should therefore be replaced, since it is still at full capacity at the moment It can be expected that the hose will be completely torn open in a more or less short time and thus destroyed.
  • the peristaltic pump can thus be used when conveying food are already switched off before the main hose tears open, so that the conveyed food cannot mix with the lubricant present inside the hose pump. Peristaltic pumps can now also be safely used to convey food.
  • a housing 10 of a hose pump has two connections, of which the - in the drawing - left connection as suction connection 12 and - in the drawing - right connection as pressure connection 14.
  • the direction of rotation 16 of a rotor 18 present in the housing 10 corresponds to the counterclockwise direction.
  • the two connecting pieces 12, 14 protrude through the upper region 20 of the housing 10 into the interior 46 thereof and are connected to one another by a hose 22.
  • This hose 22 lies in the lower, circular-cylindrical pinched area 24 of the housing 10 on the inside of the housing 10 directly or indirectly via a cushion layer - not shown in the drawing.
  • the runner 18 and its crushing bodies 26 which are present on it and are in contact with the tube in a squeezing manner each form a cylindrical outer surface 30 which sealingly abuts the end walls of the housing 10 which lie parallel to the plane of the sheet.
  • the above components correspond to the components known from known peristaltic pumps.
  • the wall 31 of the hose 22 present in the interior of the housing 10 has a channel-like opening 32 which is present parallel to the longitudinal axis 34 thereof.
  • the channel-like opening 32 is oriented closer to the inside 36 than to the outside 34 of the wall 31. In terms of its circumference, it is also arranged in such a way that it is located in the bending region 40 of the hose 22, on the left in FIG. 3, in which the cross section of the hose is deflected by 180 degrees by the force 42 of the squeeze body 26 and is thus subjected to a maximum load.
  • This channel-like opening 32 of the hose 22 has an opening 44 in the area of the suction nozzle 12, which opens into the interior 46 of the housing 10, in the upper area thereof.
  • the channel-like opening 32 has an airtight connection with an outlet channel 50, which exits to the atmosphere with its other end outside the housing 10, whereby it pierces the sealing ring 52.
  • the pressure connection 14 has at its upper end an external thread 54, on which a union nut 56 is screwed against the sealing ring 52 and against the upper region 20 of the housing 10.
  • the suction nozzle 12 is also attached to the housing 10 and thus also to the hose 22. Only the suction nozzle 12 does not have the outlet opening 50, since there the channel-like opening 32 opens into the interior 46 of the housing 10 through the opening 44.
  • the peristaltic pump according to FIGS. 1 to 3 works as follows.
  • the hose pump could thus be switched off at a time when the hose 22 would still be intact per se and at which no mixing between the lubricant present in the interior of the housing 10 and the soup or the like to be conveyed - for example - could occur.
  • Such a peristaltic pump could thus be used without hesitation in the food sector in terms of food law.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Massaging Devices (AREA)
  • Pipe Accessories (AREA)
  • Seal Device For Vehicle (AREA)

Claims (7)

  1. Pompe péristaltique comportant :
    - un boîtier (10) équipé d'une tubulure de refoulement (14) et d'une tubulure d'aspiration (12);
    - un tuyau flexible (22) relié à la tubulure de refoulement (14) et à la tubulure d'aspiration (12) et en contact avec la paroi interne (24) du boîtier (10);
    - au moins deux éléments d'écrasement (26) qui peuvent être déplacés le long du tuyau flexible (22) de telle sorte que ce tuyau flexible (22) est écrasable par chaque élément d'écrasement (26), en direction de la tubulure d'aspiration (12), vers la tubulure de refoulement (40);
    - au moins un tube ou canal élastique déformable (32), agencé à l'intérieure (46) du boîtier (10), qui est écrasable par le mouvement des éléments d'écrasement (26) d'une extrémité (44) vers l'autre extrémité (50),
       caractérisé en ce que l'extrémité (44) du tube ou canal (32) est reliée à l'espace intérieur (46) du boîtier (10), alors que l'autre extrémité (50) débouche à l'extérieure du boîtier (10), dans l'atmosphère ambiante, en vue de la création d'une dépression
  2. Pompe péristaltique selon la revendication 1, caractérisée en ce que les premiers éléments d'écrasement (26) forment simultanément les deuxièmes éléments d'écrasement (26).
  3. Pompe péristaltique selon la revendication 1, caractérisé en ce que le tube (32) est relié à l'atmosphère ambiante entourant le boîtier, via un clapet antiretour qui ouvrent en direction de l'atmosphère.
  4. Pompe péristaltique selon la revendication 1 ou 2,
    caractérisée en ce que le tube (32) est agencé parallèlement au tuyau flexible (22), à l'intérieure du boîtier (10).
  5. Pompe péristaltique selon la revendication 4, caractérisée en ce que le tube (32) est agencé à l'intérieure de la paroi du tuyau flexible (22).
  6. Pompe péristaltique selon la revendication 5, caractérisée en ce que le tube (32) est constitué par un espace creux dans la paroi du tuyau flexible (22).
  7. Pompe péristaltique selon la revendication 5 ou 6,
       caractérisée en ce que l'espace creux (32) est agencé à l'intérieure du tuyau flexible (22), à proximité du côté intérieur (36) plutôt qu'à proximité du côté extérieur (38) du tuyau flexible.
EP89908964A 1988-08-12 1989-08-09 Pompe peristaltique Expired - Lifetime EP0394383B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3827405A DE3827405A1 (de) 1988-08-12 1988-08-12 Schlauchpumpe
DE3827405 1988-08-12

Publications (2)

Publication Number Publication Date
EP0394383A1 EP0394383A1 (fr) 1990-10-31
EP0394383B1 true EP0394383B1 (fr) 1992-12-02

Family

ID=6360726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89908964A Expired - Lifetime EP0394383B1 (fr) 1988-08-12 1989-08-09 Pompe peristaltique

Country Status (10)

Country Link
US (1) US5049048A (fr)
EP (1) EP0394383B1 (fr)
JP (1) JPH03504528A (fr)
KR (1) KR0126592B1 (fr)
AT (1) ATE83047T1 (fr)
DE (2) DE3827405A1 (fr)
DK (1) DK171563B1 (fr)
FI (1) FI100676B (fr)
NO (1) NO171381C (fr)
WO (1) WO1990001638A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0947698A2 (fr) 1998-04-02 1999-10-06 Alfa Laval Flow Gmbh Dispositif de sécurité pour tube

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5356267A (en) * 1992-10-27 1994-10-18 Beta Technology, Inc. Peristaltic pump with removable collapsing means and method of assembly
EP1129289A1 (fr) * 1998-11-06 2001-09-05 Albury Bourne Ltd. Dispositif de pompage peristaltique de fluide et/ou de separation solides/liquide
FR2787835B1 (fr) * 1998-12-23 2004-09-24 Centre Nat Rech Scient Compresseurs peristaltiques adaptes a la compression non relaxante de gaz polarise
NL1012039C2 (nl) * 1999-05-11 2000-11-14 Bornhoud B V Pomp met vacu³mmiddelen.
CA2420965C (fr) * 2000-09-01 2007-01-09 Katsuzo Somura Procede et appareil de production de glace stereoscopique sous forme d'une sphere, transparente ou analogue
NL1016948C2 (nl) * 2000-12-21 2002-06-25 Verder Vleuten Bv Peristaltische pomp voorzien van een behuizing.
WO2003106042A1 (fr) * 2002-06-13 2003-12-24 Graco Minnesota Inc. Pulverisateur de texture a debit reglable equipe d'une pompe peristaltique
US6890161B2 (en) * 2003-03-31 2005-05-10 Assistive Technology Products, Inc. Disposable fluid delivery system
US20050129545A1 (en) * 2003-12-15 2005-06-16 Prosek Michael E.Jr. Peristaltic pumping mechanism with geared occlusion rollers
WO2009006648A1 (fr) * 2007-07-04 2009-01-08 Raymond William Hinks Pompe péristaltique
US8118049B2 (en) * 2008-03-28 2012-02-21 Cardona Robert D Safety system for fluid conduit
US8418364B2 (en) * 2008-07-14 2013-04-16 Blue-White Industries, Ltd. Method of extending tubing life of a peristaltic pump
US9759210B1 (en) 2010-06-08 2017-09-12 Stenner Pump Company, Inc. Peristaltic pump head and related methods
KR101006479B1 (ko) * 2010-10-06 2011-01-06 김은수 호스 압착력의 미세 조절이 용이한 호스 펌프
WO2019236461A1 (fr) * 2018-06-04 2019-12-12 The Gillette Company Llc Produit de soins personnels à distribution de fluide

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103178A (en) * 1961-08-11 1963-09-10 Ronald E Thompson High-capacity pump of tube-compression type
US3105447A (en) * 1961-08-28 1963-10-01 Ruppert Robert Gene Pump construction
NL178711C (nl) * 1976-02-24 1986-05-01 Gerritsen Jan Willem Slangpomp en een daarvoor bestemde pompslang.
US4576553A (en) * 1980-12-22 1986-03-18 Black & Decker Inc. Painting applicator with remote supply
US4474082A (en) * 1981-09-11 1984-10-02 Borg-Warner Corporation Control system for power shifted transmission
DE3320091A1 (de) * 1983-06-03 1984-12-06 Streicher, Irmgard, 7141 Beilstein Schlauchpumpe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0947698A2 (fr) 1998-04-02 1999-10-06 Alfa Laval Flow Gmbh Dispositif de sécurité pour tube

Also Published As

Publication number Publication date
US5049048A (en) 1991-09-17
NO171381B (no) 1992-11-23
DK89590A (da) 1990-04-10
FI901853A0 (fi) 1990-04-12
ATE83047T1 (de) 1992-12-15
KR0126592B1 (ko) 1998-04-03
NO901500L (no) 1990-04-03
DE58902903D1 (de) 1993-01-14
KR900702236A (ko) 1990-12-06
DE3827405A1 (de) 1990-02-15
JPH03504528A (ja) 1991-10-03
NO901500D0 (no) 1990-04-03
NO171381C (no) 1993-03-03
DK171563B1 (da) 1997-01-13
EP0394383A1 (fr) 1990-10-31
DK89590D0 (da) 1990-04-10
FI100676B (fi) 1998-01-30
WO1990001638A1 (fr) 1990-02-22

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