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EP1664535B1 - Pompe peristaltique - Google Patents

Pompe peristaltique Download PDF

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Publication number
EP1664535B1
EP1664535B1 EP04734653A EP04734653A EP1664535B1 EP 1664535 B1 EP1664535 B1 EP 1664535B1 EP 04734653 A EP04734653 A EP 04734653A EP 04734653 A EP04734653 A EP 04734653A EP 1664535 B1 EP1664535 B1 EP 1664535B1
Authority
EP
European Patent Office
Prior art keywords
tube
hose
bed
peristaltic pump
bed unit
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
EP04734653A
Other languages
German (de)
English (en)
Other versions
EP1664535A1 (fr
Inventor
Markus Firmann
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.)
Innolab GmbH
Original Assignee
Innolab 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 Innolab GmbH filed Critical Innolab GmbH
Publication of EP1664535A1 publication Critical patent/EP1664535A1/fr
Application granted granted Critical
Publication of EP1664535B1 publication Critical patent/EP1664535B1/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
    • 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

Definitions

  • the invention relates to a peristaltic pump according to the preamble of claim 1.
  • Peristaltic pumps consist essentially of a hose bed as a support for the hose and at least one element that squeezes the hose in a partial area.
  • the pumping action is created by moving the squeeze element longitudinally relative to the tube.
  • squeezing elements ram, fingers or rollers on a rotor are known.
  • the performance of peristaltic pumps is mainly determined by the design of the pump, the dimensions of the tubing, the tubing, the fluid being pumped and the conditions of use. Decisive for the pumping action and the service life of the hoses are the dynamic elastic properties, the creep and bending fatigue strength as well as the compression and tension set of the hose material.
  • the tubing fatigues due to the repeated bruising, so that the tube cross-section and thus the tube volume in the pinch area deviates more and more from the initial state over time.
  • the rollers exert a tensile force on the hose, which increasingly stretches it in the longitudinal direction, so that in the pinch region of the Reduce tubing cross-section and tubing volume over time.
  • peristaltic pumps aims to produce flow rates that are predictable, reproducible and consistent within narrow limits under the same conditions of use with a particular type of pump and tubing.
  • Pumps for hose meter goods therefore usually have on both sides of the tubular bed, for example, as terminals running holding devices for the hose. If the hose bed is designed as a hose cassette separable from the pump, then this often has lateral recesses for receiving stoppers permanently connected to the hose. Such holding devices prevent the tube from shifting in the pump, but not from stretching in the crimping area due to the tensile force exerted on the rollers in the longitudinal direction.
  • the hose has the document which is regarded as the closest prior art WO 01/23277 (D1 ) a perforated longitudinal rib on which is inserted in two glued together halves of a cassette.
  • the cassette includes the tubing, the Schlaubett and a dosing unit for the liquid to be delivered.
  • the delivery rate should be quickly and continuously variable and should allow a promotion between 20 cc / hour and more than 1500 ccm / minute. In this way, the hose is sufficiently firmly held in the cassette which can be exchanged with the dosing unit.
  • a constant delivery rate is not necessary and is not desired.
  • the assembly of the cassette is relatively complex, as well as the production of the tube with the perforated longitudinal rib and difficult to perform especially for small tubes. Multi-channel pumps can also be realized only to a limited extent with such a construction.
  • the reproducibility of the hose preload in hose cartridges is unfavorably influenced by the following shortcomings: First, the stoppers are usually of different sizes depending on the hose dimension, so that their position in the recesses of the hose cartridges designed for the largest stoppers is often not sufficiently precisely defined. Secondly, the hoses can be inserted twisted around their longitudinal axis into the hose cassette. Third, the predetermined distance between the stoppers often can not be maintained with sufficient reproducibility using today's manufacturing techniques, and fourthly, the various tube materials and dimensions would require optimized preload with a specific stopper spacing, which is neglected in favor of standardized manufacturing.
  • hose cassettes can be equipped with new hoses several times and reused, their properties can change over time due to fatigue, defect or influence of chemicals, whereby the reproducibility and constancy of the flow rates generated are additionally adversely affected. There is also the danger that the tube not fixed in the tube bed can be pinched and damaged by incorrect operation when placing the tube cassette on the pump.
  • a hose-tubing unit 1 in a bottom view, top view, top view and cross-section embodiment of a hose-tubing unit 1 consists of an injection-molded hose bed 2 and a fixed contact surface 4 in a pinch area 5 and not separable connected to the hose bed 2 hose 3.
  • the hose -Schlauchbett unit 1 has as a fastening means recesses 6, 6 ', which are matched to corresponding cams as Haltevorrich tion on the pump.
  • Further features of this embodiment are handles 18, 18 'and extensions of the tubular bed 2, which are formed as a hose clamp areas 8, 8', and a labeling area 7.
  • the labeling area 7 provides space for information about the pumped medium, the date of commissioning or other for Quality assurance and traceability important information.
  • the in the FIGS. 2A to 2C Embodiment shown in the bottom view, top view and top view of the hose-tubing unit 1 consists of a made of strip material hose bed 2 and a fixed contact surface 4 in the squish area 5 and not separable with the Hose tube 2 connected hose 3.
  • the hose-tubing unit 1 has, for example, as recesses on recesses 6, 6 ', which are matched to the corresponding holding devices on the pump. Further features of this embodiment are continuations of the tubular bed 2, which are formed as a hose clamp areas 8, 8 ', and a labeling area 7.
  • the advantage of a tubular bed 2 made of strip material is mainly that adapted for different rotor sizes, specific lengths of the Schlauch-Schlauchbett- Unit 1 can be produced inexpensively even in small batches.
  • the strip material for the tube bed 2 is preferably to be chosen so that this has sufficient tensile strength in the longitudinal direction and at the same time the lowest possible bending stress in the looping of the rotor.
  • the recesses 6, 6 'serving as fastening means, for example, and the hose clamp regions 8, 8' of hose-hose-bed units 1 made of strip material are preferably produced by punching.
  • FIGS. 3 to 9 show the cross sections of various embodiments of the hose-tubing unit 1 in the squish area 5. All variants have in common that first the tube bed 2 at least in the pinch area 5 fixed and not separable connected to the tube 3 and secondly the material and / or the cross section of Tubular bed 2 are suitable to reduce the extensibility of the hose-tubing unit 1 in the longitudinal direction in the squish area 5 so that it is less compared to the tube 3 alone. Analogously, all embodiments having these features are also within the scope of the invention, which by combination or modification of the in Fig. 3 - 9 illustrated embodiments resulting.
  • the hose-tubing unit 1 is preferably manufactured by the hose bed 2 and the hose 3 are manufactured individually and then firmly and non-separably connected, for example by gluing or welding ( Fig. 3 - 6 ) or with a combined hard / soft injection molding or extrusion process, in which the composite takes place during production (FIGS. 7, 8)
  • Fig. 3 shows the cross section of an embodiment of the hose-tubing unit 1, consisting of an example concave curved hose bed 2 and a hose 3 with tangential contact surface 4, which is glued or welded to the hose bed 2, for example.
  • the concave curvature of the hose bed 2 and contact surface 4 centers the hose 3 in the middle of the hose bed 2 and prevents lateral tilting during the squeezing process.
  • An advantage of this embodiment is further that the contact surface 4 is made of the same elastomeric material as the hose 3, this acts as a spring and thereby can compensate for tolerances in crushing and in the contact force in a certain range.
  • Fig. 4 shows the cross section of an embodiment of the hose-tubing unit 1, in which a longitudinal rib 20 of the tube 3 is glued or welded in a corresponding recess of the tubular bed 2.
  • Fig. 5 shows the cross section of an embodiment of the hose-tubing unit 1, in which the hose 3 has a non-circular cross-sectional area inside and outside. It is common to all embodiments of the hose-tubing unit 1 according to the invention that the solid, non-separable connection of the tubing 2 with the tube 3 uniquely determines the torsion position of the tube 3 in the longitudinal axis.
  • the shape of the cross-sectional area of the tube 3 inside and outside can basically be chosen freely and optimized, for example, for a long life or for gentle pumping.
  • Fig. 6 shows the cross section of an embodiment of the hose-tubing unit, in which the hose bed 2 has flexible extensions 21, 21 'as a receptacle for the hose 3.
  • the extensions 21, 21 ' are connected to the tube 3, for example, by gluing or welding firmly and not separable.
  • This embodiment has the advantage that already existing tube-piece goods with a circular inner and outer cross-section can be used.
  • Fig. 7 shows the cross section of an embodiment of the hose-tubing unit 1, in which the tube bed 2 and the tube 3 are co-extruded as a hard / soft composite.
  • the extruded fabric is cut, shortened the hose bed 2 to the necessary length and provided with suitable fasteners.
  • Fig. 8 shows the cross section of an embodiment of the hose-tubing unit 1, in which the hose bed 2 reinforcing elements 22 such as films, tapes, filaments or fibers, which are suitable to reduce the extensibility of the hose-tubing unit 1 in the longitudinal direction, that this is less in comparison to the tube 3 alone.
  • the production of this embodiment is preferably carried out by the reinforcing elements 22 are fed to the tube bed 2 during the extrusion as an afterthought.
  • the extruded fabric is cut, shortened the hose bed 2 to the necessary length and provided with suitable fasteners.
  • Fig. 9 shows the cross section of an embodiment of the hose-tubing unit 1, in which the hose bed 2 and the hose 3 are made of the same material and no additional, reinforcing element 22 included.
  • This embodiment allows only a substantial reduction in the extensibility of the tube 3 in the longitudinal direction, when the cross section of the tubular bed 2 is greater than the material cross-section of the tube.
  • Fig. 10 - 13 show various embodiments of formed as a hose clamp portion 8 extensions of the tubular bed 2 of the hose-tubing unit 1. All embodiments are common two legs 10, 10 'which form a parallel slot 9, for example, which is at least as long as half the circumference of the inner cross-section and less wide than twice the wall thickness of the largest hose to be squeezed 3.
  • Fig. 10 A, B shows the already in Fig. 2 illustrated embodiment of a hose clamp portion 8 with pinched in the slot 9 and squeezed hose 3 in top view and side view.
  • the distance between the inner flanks the leg 10, 10 'of the hose clamp portion 8 decreases continuously from the outside and merges into a preferably constant width of the slot 9. This favors a simple and effortless introduction of the tube 3 from the outside into the slot 9, as far as the tube 3 is squeezed to the desired extent and the flow of medium is partially or completely prevented.
  • Fig. 11 shows in top view a closed, lockable embodiment of a hose clamp portion 8 with a leg 10 ', which has an extension 11 which engages in a matching opening on the opposite leg 10, thereby preventing the two legs 10, 10' by the pressure of the clamped tube 3 can open over time.
  • a lockable embodiment is particularly suitable for hard hose materials or if the hose 3 must remain securely squeezed for a long time.
  • the hose clamp area 8 is opened by moving one of the legs 10, 10 'out of the common plane, causing the extension 11 to spring out of the opening in leg 10.
  • Fig. 12 shows in top view another closed, lockable embodiment of a hose clamp portion 8 with two legs 10, 10 ', which can be overlapped into each other, thereby preventing the two legs 10, 10' by the pressure of the clamped hose 3 with time can open.
  • Fig. 13 shows in top view another closed, lockable embodiment of a hose clamp area 8, in which the legs 10, 10 'have an interlocking, self-locking toothing 12.
  • the width of the slot 9 can thereby be gradually reduced by pressure on the outside of the legs 10, 10 'until the tube 3 is squeezed to the desired extent and the flow of medium is partially or completely prevented.
  • the hose clamp portion 8 is opened by one of the legs 10, 10 'is moved out of the common plane, whereby the teeth 12 dissolves.
  • Fig. 14 shows the off Fig. 1 Known hose-tubing unit 1 with an injection-molded hose bed 2 together with holding devices 15, 15a and the rollers 13 of a rotor 14 as squeezing in plan view. Analogously, the following explanations also apply to hose-hose bed units 1 with a hose bed 2 made of strip material according to Fig. 2 ,
  • a hose-tubing unit 1 takes place at the pump by on both sides of the hose 3 in a slot 16 of a holding device 15, 15 a inserted and the pressure on the hose-bed unit 1 on the inside of the handles 18 and 18 'is increased until cams 17 and 17a of the holding device 15, 15a engage in the serving as fastening means recesses 6, 6 'of the tubular bed 2.
  • the hose-tubing unit 1 is fixed relative to the rollers 13 in an unambiguous position, whereby a defined and reproducible contact force on the tube 3 sets.
  • the hose-tubing unit 1 can be disconnected from the pump by simultaneously pressing on the outside of the handles 18 and 18 ', the recesses 6, 6' of the tubing 2 serving as fastening means, of the cams 17, 17a of the holders 15, 15a are lifted, and thereby the connection of the hose-tubing unit 1 to the holding device 15, 15a is released.
  • Out Fig. 14 It can be seen that the preferred embodiment of the holding device 15, 15a allows the simultaneous attachment of two opposing hose-bag assemblies 1 and 1a.
  • hose-tubing unit 1a with recesses 19a, 19a 'on the cam 17', 17a 'of the holding device 15, 15a shown.
  • the hose-tubing unit 1a is attached to the pump, the However, hose 3a is largely relieved of the pressure of the rollers 13.
  • the elastomeric properties of the tube 3a can be obtained with a longer standstill of the pump, without the hose-tubing unit 1a must be completely separated from the pump. It goes without saying that with a hose-tubing unit 1 which several, at best, finer recesses of the type 6, 6 'and 19, 19', the contact pressure is gradually adjustable.
  • the contact pressure of the hose-tubing unit 1 can be adjusted to the squeezing according to the pressure to be generated.
  • the means for a graded or continuous adjustment of the contact pressure on the hose-tubing unit 1 or on the holding device are attached to the pump, as well as whether this directly or indirectly via levers, wedges , Screws or other adjusting elements act.
  • Fig. 15 shows the holding device 15 in side view.
  • Fig. 16 shows the already of Fig. 1 known hose-hose bed unit 1 with a spring-mounted holding device 15, 15a and the rollers 13 of a rotor 14 as squeezing in plan view.
  • Springs 23, 23a have cams 24, 24a, which are matched to the recesses 6, 6 'of the tubular bed 2.
  • the spring 23a sets the hose-tubing unit 1 under a certain tensile stress, which causes a corresponding pressing force of the hose-tubing unit 1 to the rollers 13 of the rotor 14.
  • the holding device 15, 15a can have one or both sides springs, which can also be designed to be interchangeable for different contact pressure. As already in Fig.
  • the hose-tubing unit 1a is also shown here relieved of the contact pressure by the cam 24 of the spring 23 in the recess 19a and the cam 17a 'of the holding device 15a engages in the recess 19a'.
  • a sprung holding device 15a for example, the pressure occurring in the hose 3 can be reliably limited.
  • the resilient element is designed as part of the holding device 15a or as part of the hose-tubing unit 1 or indirectly via further elements to the hose-tubing unit 1 acts.
  • each new hose-bed unit 1 each not only from a new hose 3 but always from a new hose bed 2. This ensures regardless of the embodiment always reproducible starting conditions.
  • hose-tubing unit 1 is described here preferably in connection with pumps which have a rotor and rollers as crimping elements, it is not bound to a specific type, design or dimension of crimping elements and can also be used, for example, with fingers or plungers. Pumps are used.
  • a variety of geometric shapes such as eyelets, bumps, grooves, extensions or recesses of various numbers and combination with matched elements on the Pump
  • hooks, bolts, buckles or clamps can be selected according to the requirement and hose-tubing units 1 with other than those mentioned here or additional, indirect fasteners such as brackets or cassettes fall under the spirit of the invention.
  • a single holding device is sufficient to press the hose-bed unit 1 onto the squeezing elements.
  • Embodiments of peristaltic pumps in which the hose-tubing unit 1 are connected to one or more than two holding devices are thus also according to the invention.

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

Claims (11)

  1. Pompe péristaltique comprenant :
    - au moins un socle de flexible (2),
    - au moins un flexible (3),
    - au moins un élément d'écrasement, qui peut guidé par le flexible (3) et écrase celui-ci dans une zone d'écrasement (5) contre le socle de flexible (2),
    - au moins un dispositif de retenue (15) pour la fixation du socle de flexible (2) en ce qui concerne le au moins un élément d'écrasement,
    caractérisée en ce que
    - le socle de flexible (2) et le flexible (3) sont reliés l'un à l'autre dans la zone d'écrasement (5) de façon fixe et non pas de façon séparable et forment ensemble une unité flexible - socle de flexible (1), la liaison fixe et non séparable du socle de flexible (2) et du flexible (3) étant générée dans l'unité flexible - socle de flexible (1) par collage, soudage, moulage par injection ou coextrusion du socle de flexible (2) avec le flexible (3),
    - au moins un moyen approprié (6) étant présent, lequel permet une fixation amovible de cette unité flexible - socle de flexible (1) sur le au moins un dispositif de retenue (15).
  2. Pompe péristaltique selon la revendication 1, caractérisée en ce que le socle de flexible (2) de l'unité flexible - socle de flexible (1) présente une extensibilité plus faible que le flexible (3).
  3. Pompe péristaltique selon la revendication 1 ou 2, caractérisée en ce que l'unité flexible - socle de flexible (1) présente au moins une zone conçue comme poignée (18) pour la commande du au moins un moyen (6).
  4. Pompe péristaltique selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'unité flexible - socle de flexible (1) présente au moins une zone de bornes de flexible (8).
  5. Pompe péristaltique selon la revendication 4, caractérisée en ce que la au moins zone de bornes de flexible (8) de l'unité flexible - socle de flexible (1) est réalisée sous forme de fente.
  6. Pompe péristaltique selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le au moins un moyen (6) pour la fixation de l'unité flexible - socle de flexible (1) sur le au moins un dispositif de retenue (15) est formé par au moins une zone, conçue comme évidement, anneau, came, bosse ou dent ou prolongement du socle de flexible (2).
  7. Pompe péristaltique selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le au moins un moyen (6) pour la fixation de l'unité flexible - socle de flexible (1) sur le au moins un dispositif de retenue (15) est conçu sous forme d'agrafe, d'attache ou de cassette.
  8. Pompe péristaltique selon l'une quelconque des revendications 1 à 7, caractérisée en ce que le au moins un moyen (6) pour la fixation de l'unité flexible - socle de flexible (1) est réalisé sur le au moins un dispositif de retenue (15) de sorte que la force d'appui de l'unité flexible - socle de flexible (1) peut être réglée sur le au moins un élément d'écrasement.
  9. Pompe péristaltique selon l'une quelconque des revendications 1 à 8, caractérisée en ce que le au moins un moyen (6) pour la fixation de l'unité flexible - socle de flexible (1) sur le au moins un dispositif de retenue (15) contient au moins un élément monté sur ressort (23) qui entraîne une force d'appui, correspondant à sa force de ressort, de l'unité flexible - socle de flexible (1) sur le au moins un élément d'écrasement.
  10. Pompe péristaltique selon la revendication 1, caractérisée en ce que le socle de flexible (2) et le flexible (3) de l'unité flexible - socle de flexible (1) sont fabriqués au moyen de moulage par injection à deux composants.
  11. Pompe péristaltique selon la revendication 1, caractérisée en ce que le socle de flexible (2) et le flexible (3) de l'unité flexible - socle de flexible (1) sont fabriqués par coextrusion.
EP04734653A 2003-06-06 2004-05-25 Pompe peristaltique Expired - Lifetime EP1664535B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH9882003 2003-06-06
PCT/CH2004/000317 WO2004109109A1 (fr) 2003-06-06 2004-05-25 Pompe peristaltique

Publications (2)

Publication Number Publication Date
EP1664535A1 EP1664535A1 (fr) 2006-06-07
EP1664535B1 true EP1664535B1 (fr) 2011-03-16

Family

ID=33494587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04734653A Expired - Lifetime EP1664535B1 (fr) 2003-06-06 2004-05-25 Pompe peristaltique

Country Status (5)

Country Link
US (1) US20060177329A1 (fr)
EP (1) EP1664535B1 (fr)
AT (1) ATE502213T1 (fr)
DE (1) DE502004012312D1 (fr)
WO (1) WO2004109109A1 (fr)

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TR201902455T4 (tr) 2009-07-14 2019-03-21 Sanofi Aventis Deutschland Bir peristaltik pompa için pompa haznesi.
DE102009058279B4 (de) * 2009-12-11 2016-05-12 W. O. M. World of Medicine GmbH Peristaltische Schlauchpumpe
US8539672B2 (en) * 2010-10-01 2013-09-24 Zevex, Inc. Method for improving accuracy in a peristaltic pump system based on tubing material properties
WO2012112920A1 (fr) 2011-02-19 2012-08-23 Shipman Douglas Pompe améliorée, procédé d'utilisation et procédé de fabrication
GB201421964D0 (en) * 2014-12-10 2015-01-21 Hodges & Drake Design Ltd Peristaltic pumps
US20180340530A1 (en) * 2017-05-24 2018-11-29 Clayton Vowels Multi-tubular peristaltic pump apparatus and methods of making and using the same
EP4166786A1 (fr) * 2021-10-18 2023-04-19 Lrp Ag Pompe péristaltique

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Also Published As

Publication number Publication date
EP1664535A1 (fr) 2006-06-07
US20060177329A1 (en) 2006-08-10
ATE502213T1 (de) 2011-04-15
WO2004109109A1 (fr) 2004-12-16
DE502004012312D1 (de) 2011-04-28

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