WO1985005153A1 - Tubular pump - Google Patents

Tubular pump Download PDF

Info

Publication number
WO1985005153A1
WO1985005153A1 PCT/EP1985/000203 EP8500203W WO8505153A1 WO 1985005153 A1 WO1985005153 A1 WO 1985005153A1 EP 8500203 W EP8500203 W EP 8500203W WO 8505153 A1 WO8505153 A1 WO 8505153A1
Authority
WO
WIPO (PCT)
Prior art keywords
hose
ring
squeeze
pump
rollers
Prior art date
Application number
PCT/EP1985/000203
Other languages
German (de)
French (fr)
Inventor
Hans Beerwald
Günter Böhm
Werner Lück
Original Assignee
Glomski, Günter
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 Glomski, Günter filed Critical Glomski, Günter
Priority to AT85902506T priority Critical patent/ATE38266T1/en
Priority to DE8585902506T priority patent/DE3565875D1/en
Publication of WO1985005153A1 publication Critical patent/WO1985005153A1/en

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 tube pump wherein the tube supply at least one point between ⁇ circularly moving rollers and a Quetschbahn sam is squeezed tight and to be supported. Liquid or the gas to be pumped is transported by moving the pinch point.
  • Peristaltic pumps of this type often also referred to as “roller pumps” or “peristaltic pumps” - are used as laboratory devices and, moreover, are used in a particularly varied manner in medical technology. In medicine, they are very often used for routine tasks in which a quick and safe insertion of the hose is required.
  • the hose is usually a disposable part that is used only once.
  • a peristaltic pump in which handling, in particular the insertion of the hose, is significantly facilitated, is described in DE-AS 23 58 228. * - These and other peristaltic pumps for easier handling, however, require an increased design effort for the already not very simple mechanical construction of the peristaltic pumps. 5
  • peristaltic pumps it is irrelevant for the function of the peristaltic pump whether the rollers press resiliently against the fixed squeeze path or the resilient presses against the rollers.
  • the simplest peristaltic pumps only have two squeeze rollers and the squeeze path forms at least one semicircle. With a semicircle, it is difficult and expensive to produce a uniform radial contact pressure with a resilient squeeze path. That is why the cheaper hose pumps with 5 only two pinch rollers have spring-loaded rollers, which in turn means an increase in price.
  • Peristaltic pumps in which the squeeze track resiliently presses against the rollers are designed to be even more complex.
  • the squeeze track O is almost straight (1/8 circle); with the peristaltic pumps according to PCT / WO 82 / oo498 the squeeze path forms a 1/4 circle, likewise with the peristaltic pump according to DE-PS 26 51 962, the adjustment of the squeeze path or its abutment then being critical. 5
  • the invention is based on the object of realizing a peristaltic pump whose handling is simple and whose production costs are low. She is looking for a solution for the design of a simple resilient squeeze track that creates an even contact pressure, even if the squeeze track is strongly curved.
  • a resilient ring which closely surrounds the roller circle presses the hose against the pinch rollers.
  • a spring steel ring can enclose a plastic that is not too hard and into which the hose is inserted in a non-slip manner. Pressed into an ellipse by hand, this ring is put over the rollers.
  • the ring contains one or more pins parallel to the axis, which protrude into radial oblong holes in the base plate and secure the ring against rotation.
  • the resilient ring is firmly connected to the hose, so that the hose and ring form an interchangeable unit.
  • This unit will usually be made entirely of plastic as a disposable part; reinforcement by a spring steel ring can usually be omitted.
  • FIG. 1 shows a plan view of the base plate and the rotor of a hose pump according to the invention
  • FIG. 2 shows a section through the base plate and the rotor of the hose pump according to the invention
  • FIG. 3 shows a section through the spring ring with hose of the hose pump according to the invention along the line III-III in FIG. 4; 4 shows a section through the spring ring with hose of the hose pump according to the invention along the line IV-IV in FIG. 3.
  • the resilient plastic ring 1 and the hose 2 are glued together.
  • the two retaining pins 3 are made of the same material as the ring 1.
  • the ring is - hand-shaped into an ellipse - pushed over the rotor 4 so that it encloses the two rollers 5 and the retaining pins 3 in the elongated holes 6 Extend base plate 7.
  • the resilient ring 1 remains deformed so that its spring force presses radially against the rollers 5.
  • the roller carrier 8 of the rotor 4 protrudes somewhat beyond the roller surface so that the ring 1 cannot slip off the rollers.
  • the test model showed that the pump was functional even without gluing the hose and ring; the clamping of the hose on the bushing 9 ensured that the hose was adequately held.

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

Abstract

Tubular pump in which the pipe is squeezed in at least one point between rollers which are moved circularly on a squeezing path and in which the liquid or gas to be carried is transported by the movement of the squeeze. In order to produce in such a tubular pump, of simple design, a uniform squeezing pressure over the entire squeeze path and to be able to change the pump (2) easily, this invention entails the use of an elastic ring (1) which closely surrounds the roller circle and presses the pipe (2) against the squeeze rollers, the elastic ring (1) being firmly connected to the pump, so that the pipe (2) and the ring (1) form an interchangeable unit.

Description

Schlauchpumpe Peristaltic pump
Die Erfindung betrifft eine Schlauchpumpe, bei der der Schlauch an mindestens einer Stelle zwischen ι kreisförmig bewegten Rollen und einer Quetschbahn zu- sam engequetscht wird und die zu fördernde. Flüssig¬ keit oder das zu fördernde Gas durch Verschieben der Quetschstelle tranportiert wird.The invention relates to a tube pump wherein the tube supply at least one point between ι circularly moving rollers and a Quetschbahn sam is squeezed tight and to be supported. Liquid or the gas to be pumped is transported by moving the pinch point.
Solche Schlauchpumpen - oft auch als "Rollenpumpen" oder "Peristaltische Pumpen" bezeichnet - werden als Laborgeräte verwendet und finden darüber hinaus be¬ sonders vielfältige Anwendung in der Medizintechnik. In der Medizin werden sie sehr häufig bei Routineauf¬ gaben eingesetzt, bei denen ein rasches und sicheres Einlegen des Schlauches gefordert ist. Hierbei ist der Schlauch gewöhnlich ein Wegwerfteil, das nur ein¬ mal benutzt wird.Peristaltic pumps of this type - often also referred to as "roller pumps" or "peristaltic pumps" - are used as laboratory devices and, moreover, are used in a particularly varied manner in medical technology. In medicine, they are very often used for routine tasks in which a quick and safe insertion of the hose is required. The hose is usually a disposable part that is used only once.
Eine Schlauchpumpe, bei der die Handhabung, insbe- sondere das Einlegen des Schlauches bedeutend er¬ leichtert ist, ist in DE-AS 23 58 228 beschrieben. *- Diese und andere Schlauchpumpen für erleichterte Hand¬ habung erfordern jedoch einen erhöhten konstruktiven Aufwand für den ohnehin schon nicht sehr einfachen mechanischen Aufbau der Schlauchpumpen. 5A peristaltic pump, in which handling, in particular the insertion of the hose, is significantly facilitated, is described in DE-AS 23 58 228. * - These and other peristaltic pumps for easier handling, however, require an increased design effort for the already not very simple mechanical construction of the peristaltic pumps. 5
Ob die Rollen federnd gegen die feste Quetschbahn drücken oder die Quetschbahn federnd gegen die Rollen drückt, ist für die Funktion der Schlauchpumpe uner¬ heblich. Die einfachsten Schlauchpumpen besitzen nur 0 zwei Quetschrollen und die Quetschbahn bildet mindestens einen Halbkreis. Bei einem Halbkreis ist es schwierig und aufwendig, mit federnder Quetschbahn einen gleichmäßigen radialen Anpreßdruck zu erzeugen. Deshalb haben auch die billigeren Schlauchpumpen mit 5 nur zwei Quetschrollen federnd gelagerte Rollen, was wiederum eine Verteuerung bedeutet. Schlauchpumpen, bei denen die Quetschbahn federnd gegen die Rollen drückt, sind noch aufwendiger konstruiert. Bei der Konstruktion nach DE-AS 23 58 228 ist die Quetschbahn O nahezu geradlinig (1/8-Kreis) ausgeführt; bei den Schlauchpumpen nach PCT/WO 82/oo498 bildet die Quetschbahn einen 1/4-Kreis, ebenso bei der Schlauch¬ pumpe nach DE-PS 26 51 962, wobei dann die Justierung der Quetschbahn bzw. ihres Widerlagers kritisch ist. 5It is irrelevant for the function of the peristaltic pump whether the rollers press resiliently against the fixed squeeze path or the resilient presses against the rollers. The simplest peristaltic pumps only have two squeeze rollers and the squeeze path forms at least one semicircle. With a semicircle, it is difficult and expensive to produce a uniform radial contact pressure with a resilient squeeze path. That is why the cheaper hose pumps with 5 only two pinch rollers have spring-loaded rollers, which in turn means an increase in price. Peristaltic pumps in which the squeeze track resiliently presses against the rollers are designed to be even more complex. In the construction according to DE-AS 23 58 228, the squeeze track O is almost straight (1/8 circle); with the peristaltic pumps according to PCT / WO 82 / oo498 the squeeze path forms a 1/4 circle, likewise with the peristaltic pump according to DE-PS 26 51 962, the adjustment of the squeeze path or its abutment then being critical. 5
Der Erfindung liegt die Aufgabe zu Grunde, eine Schlauchpumpe zu realisieren, deren Handhabung einfach ist und deren Herstellungskosten niedrig sind. Sie sucht nach einer Lösung für die Gestaltung einer ein- 0 fachen federnden Quetschbahn, die einen gleichmäßigen Anspreßdruck erzeugt, auch wenn die Quetschbahn stark gekrümmt ist.The invention is based on the object of realizing a peristaltic pump whose handling is simple and whose production costs are low. She is looking for a solution for the design of a simple resilient squeeze track that creates an even contact pressure, even if the squeeze track is strongly curved.
Diese Aufgabe wird erfindungsmäßig dadurch gelöst, 5 daß ein federnder, den Rollenkreis eng umschließender Ring den Schlauch gegen die Quetschrollen preßt. Beispielsweise kann ein Federstahlring einen nicht zu harten Kunststoff ing umschließen, in den der Schlauch rutschfest eingelegt wird. Mit der Hand zu einer Ellipse zusammengedrückt, wird dieser Ring über die Rollen gestülpt. Der Ring enthält einen oder mehrere achsenparallele Stifte, die in radiale Lang löcher der Grundplatte hineinragen und den Ring gegen Verdrehen sichern.This object is achieved according to the invention in that 5 a resilient ring which closely surrounds the roller circle presses the hose against the pinch rollers. For example, a spring steel ring can enclose a plastic that is not too hard and into which the hose is inserted in a non-slip manner. Pressed into an ellipse by hand, this ring is put over the rollers. The ring contains one or more pins parallel to the axis, which protrude into radial oblong holes in the base plate and secure the ring against rotation.
Um die Handhabung, insbesondere für Routinearbeiten in der Medizin, zu erleichtern, wird nach einer weiteren Ausgestaltung der Erfindung der federnde Ring fest mit dem Schlauch verbunden, so daß Schlauch und Ring eine auswechselbare Einheit bilden.In order to facilitate handling, in particular for routine work in medicine, according to a further embodiment of the invention the resilient ring is firmly connected to the hose, so that the hose and ring form an interchangeable unit.
Diese Einheit wird gewöhnlich als Wegwerfteil ganz aus Kunststoff bestehen; eine Verstärkung durch einen Federstahlring kann meist entfallen.This unit will usually be made entirely of plastic as a disposable part; reinforcement by a spring steel ring can usually be omitted.
Die mit der Erfindung erzielten Vorteile bestehen ins¬ besondere darin, daß die Handhabung der Schlauchpumpe einfach ist und wegen der Einfachheit der Konstruktion die Herstellungskosten niedrig sind.The advantages achieved by the invention are, in particular, that the handling of the peristaltic pump is simple and the manufacturing costs are low due to the simplicity of the construction.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen:An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it:
Fig. 1 eine Draufsicht auf die Grund¬ platte und den Rotor einer Schlauchpumpe gemäß der Erfin¬ dung;1 shows a plan view of the base plate and the rotor of a hose pump according to the invention;
Fig. 2 einen Schnitt durch die Grund¬ platte und den Rotor der Schlauchpumpe gemäß der Erfin¬ dung;2 shows a section through the base plate and the rotor of the hose pump according to the invention;
Fig. 3 einen Schnitt durch den federn¬ den Ring mit Schlauch der Schlauchpumpe gemäß der Erfin¬ dung entlang der Linie III - III in Fig. 4; Fig. 4 einen Schnitt durch den federn¬ den Ring mit Schlauch der Schlauchpumpe gemäß der Erfin¬ dung entlang der Linie IV - IV in Fig. 3.3 shows a section through the spring ring with hose of the hose pump according to the invention along the line III-III in FIG. 4; 4 shows a section through the spring ring with hose of the hose pump according to the invention along the line IV-IV in FIG. 3.
Der federnde Kunststoffring 1 und der Schlauch 2 sind zusammengeklebt. Die beiden Haltestifte 3 bestehen aus dem gleichen Material wie der Ring 1. Der Ring wird - mit der Hand zu einer Ellipse geformt - über den -Rotor 4 geschoben, so daß er die beiden Rollen 5 umschließt und die Haltestifte 3 in die Langlöcher 6 der Grundplatte 7 hineinragen. Der federnde Ring 1 bleibt dabei verformt, so daß seine Federkraft radial gegen die Rollen 5 drückt. Der Rollenträger 8 des Rotors 4 ragt etwas über die Rollenoberfläche hinaus, so daß der Ring 1 nicht von den Rollen abrutschen kann. Beim Versuchsmodell zeigte sich, daß die Pumpe auch ohne Verklebung von Schlauch und Ring funktionstüchtig war; die Klemmung des Schlauches an der Durchführung 9 gewährleistete eine ausreichende Halterung des Schlauches. The resilient plastic ring 1 and the hose 2 are glued together. The two retaining pins 3 are made of the same material as the ring 1. The ring is - hand-shaped into an ellipse - pushed over the rotor 4 so that it encloses the two rollers 5 and the retaining pins 3 in the elongated holes 6 Extend base plate 7. The resilient ring 1 remains deformed so that its spring force presses radially against the rollers 5. The roller carrier 8 of the rotor 4 protrudes somewhat beyond the roller surface so that the ring 1 cannot slip off the rollers. The test model showed that the pump was functional even without gluing the hose and ring; the clamping of the hose on the bushing 9 ensured that the hose was adequately held.

Claims

Patentansprüche Claims
1. Schlauchpumpe, bei der der Schlauch an mindestens einer Stelle zwischen kreisförmig beweg- ten Rollen und einer Quetschbahn zusammengequetscht wird und die zu fördernde Flüssigkeit oder das zu fördernde Gas durch Verschieben der Quetschstelle transportiert wird, d a d u r c h g e k e n n z e i c h n e t, daß ein federnder, den Rollenkreis eng umschließender Ring (1) den Schlauch (2) gegen die Quetschrollen (5) preßt.1. Peristaltic pump, in which the hose is squeezed together at at least one point between rollers moving in a circle and a squeeze path and the liquid or gas to be conveyed is transported by moving the squeeze point, characterized in that a resilient, closely enclosing the roller circle Ring (1) presses the hose (2) against the pinch rollers (5).
2. Schlauchpumpe nach Anspruch 1, dadurch gekennzeichnet, daß der federnde Ring (1) fest mit dem Schlauch (5) verbunden ist, so daß Schlauch und Ring eine auswechselbare Einheit bilden. 2. Hose pump according to claim 1, characterized in that the resilient ring (1) is fixedly connected to the hose (5), so that the hose and ring form an interchangeable unit.
PCT/EP1985/000203 1984-05-07 1985-05-07 Tubular pump WO1985005153A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT85902506T ATE38266T1 (en) 1984-05-07 1985-05-07 HOSE PUMP.
DE8585902506T DE3565875D1 (en) 1984-05-07 1985-05-07 Peristaltic pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3416776A DE3416776A1 (en) 1984-05-07 1984-05-07 HOSE PUMP
DEP3416776.5 1984-05-07

Publications (1)

Publication Number Publication Date
WO1985005153A1 true WO1985005153A1 (en) 1985-11-21

Family

ID=6235107

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1985/000203 WO1985005153A1 (en) 1984-05-07 1985-05-07 Tubular pump

Country Status (3)

Country Link
EP (1) EP0180632B1 (en)
DE (2) DE3416776A1 (en)
WO (1) WO1985005153A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483924A (en) * 1946-06-10 1949-10-04 Moulinier Edmond Jean Pump
FR1067081A (en) * 1952-11-24 1954-06-11 Compression device for refrigeration installations
FR1328484A (en) * 1962-04-18 1963-05-31 Roller pump
FR1351813A (en) * 1964-05-11 Mecanique Generale De L Ouest Epicyclic roller pump
DE2153052A1 (en) * 1971-10-25 1973-05-03 Allen Longford & Associates Lt PERISTALTIC PUMP

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1351813A (en) * 1964-05-11 Mecanique Generale De L Ouest Epicyclic roller pump
US2483924A (en) * 1946-06-10 1949-10-04 Moulinier Edmond Jean Pump
FR1067081A (en) * 1952-11-24 1954-06-11 Compression device for refrigeration installations
FR1328484A (en) * 1962-04-18 1963-05-31 Roller pump
DE2153052A1 (en) * 1971-10-25 1973-05-03 Allen Longford & Associates Lt PERISTALTIC PUMP

Also Published As

Publication number Publication date
DE3416776A1 (en) 1985-11-07
EP0180632A1 (en) 1986-05-14
EP0180632B1 (en) 1988-10-26
DE3565875D1 (en) 1988-12-01

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