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EP0065073A1 - Flexible-hose pump - Google Patents

Flexible-hose pump Download PDF

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Publication number
EP0065073A1
EP0065073A1 EP82101321A EP82101321A EP0065073A1 EP 0065073 A1 EP0065073 A1 EP 0065073A1 EP 82101321 A EP82101321 A EP 82101321A EP 82101321 A EP82101321 A EP 82101321A EP 0065073 A1 EP0065073 A1 EP 0065073A1
Authority
EP
European Patent Office
Prior art keywords
hose
flexible
housing
inlet
outlet
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.)
Withdrawn
Application number
EP82101321A
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German (de)
French (fr)
Inventor
Wilhelm Ponndorf
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Individual
Original Assignee
Individual
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Filing date
Publication date
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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
    • F04B43/1238—Machines, pumps, or pumping installations having flexible working members having peristaltic action using only one roller as the squeezing element, the roller moving on an arc of a circle during squeezing

Definitions

  • Peristaltic pumps which are used in practice mainly for the conveyance of flowable media with an aggressive and abrasive character, are common technical knowledge, so that the description of their mode of operation can be dispensed with.
  • the tube only partially, if at all, lies against the housing wall during the pressing by two or more rollers.
  • These pumps have the disadvantage that at least two press rollers are required in order to achieve a permanent hose seal and thus the displacement of the medium to be conveyed.
  • the novelty of this invention is; that the hose is mounted in a completely circular manner in the housing and the inlet and outlet ends lead outwards by a pinched hose width.
  • This construction allows the same pumping effect to be achieved with just one roller, with a higher output per shaft revolution and the hose being squeezed only once, which significantly extends the life of the hose.
  • the hose In order to avoid mutual friction, the hose must be fixed at the inlet and outlet ends.
  • FIG. I shows a schematic representation of the hose pump 1 described above with a housing 2, a circularly inserted hose 3, the pressure roller 4, the drive shaft 6 and the schematically indicated spring-mounted axis of the bearing roller 5.
  • the roller 4 runs on the hose surface with simultaneous squeezing of the hose 3 and displaces the content of the hose 3 in the running direction to the pump outlet 7, the vacuum created behind the roller 4 simultaneously sucking the pumped medium through the pump inlet 8.
  • the pump inlet 8 and the outlet 7 lie in one plane. This is a significant advantage over previously known constructions because it can be installed in a straight pipe, the slight displacement of the entry and exit axes, as shown in FIGS. II and III, being irrelevant.
  • Figure II shows the cross section through the pump with the indicated hose guides 9, while in Figure III the hose distance X is shown, which is required for a contactless pressing of the tangential hose inlet and outlet, and also the lateral displacement of the suction line to the pressure line in one Plane around the dimension X indicates.
  • the pump shaft 6 is driven via an elastic coupling via a gear motor if the slurry pump is to be used only for pumping purposes. If you want to use them for dosing at the same time, a continuously variable gear motor is selected.
  • the housing 2 is provided with a removable sight glass 12 or window in order to readjust the pressure roller 4 via the resilient adjusting device 5.
  • the pump hose 3 is in the inlet and outlet nozzle 10 and 11 in the usual way by hose clamped to prevent mutual friction between the inlet and outlet hose ends at point 0.
  • the hose guides 9 prevent the hose from migrating sideways, which is caused by the spiral running development of the roller 4 on the hose surface.
  • a pump of this design can deliver in both directions and is self-priming.
  • the spring-loaded press roller 4 allows hoses with an uneven outside diameter to be used. If the outlet is completely closed, roller 4 will yield resiliently and prevent the hose from bursting.
  • the hose lies only in a circular arc from 120 to max. 180 ° on the housing wall and is pressed in this sector by two or more rollers.
  • the hose volume is reduced by the volume that the roller pressure requires, i.e. in conventional peristaltic pumps with several rollers by the number of rollers minus 1, compared to the single-roller principle of this patent application.
  • the success is a significantly larger volume displacement with one revolution of the shaft 6 and thus a greater pump output, the hose being squeezed only once per shaft revolution, which contributes significantly to the durability.
  • Another advantage is that the pulsation compared to the multi-roller hose pumps takes place in a longer interval and that the large hose volume and the larger elastic hose result in better pulsation damping.

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

Abstract

In previously known flexible-hose pumps, the flexible pump hose is located in a circular arc of 60-180 DEG at the housing wall, and is pressed in this sector by two or more rolls or other pressure elements. The novelty of this invention consists in that the flexible hose is mounted in a complete circle in the housing. Consequently, only one pressure roll is required for the displacement effect, a higher power being achieved, and the flexible hose being compressed only once per shaft rotation, so that the service life of the flexible hose is substantially increased. A further advantage is that by contrast with multi-roll flexible- hose pumps the pulsation therefore takes place in a longer interval, and a better pulsation damping is achieved owing to the large flexible-hose volume and the larger elastic flexible hose. Furthermore, the pressure roll is mounted resiliently and permits the use of flexible hoses with irregular outside diameter. The inlet and outlet of the flexible-hose pump are located in one plane and therefore facilitate simple installation in existing conduit systems. <IMAGE>

Description

Schlauchpumpen, die in der Praxis hauptsächlich zur Förderung von fließfähigen Medien mit aggressivem und abrasivem Charakter eingesetzt werden, sind technisches Allgemeingut, so daß auf die Beschreibung ihrer Wirkungsweise verzichtet werden kann.Peristaltic pumps, which are used in practice mainly for the conveyance of flowable media with an aggressive and abrasive character, are common technical knowledge, so that the description of their mode of operation can be dispensed with.

Bei allen bisher bekannten Konstruktionen liegt der Schlauch während der Pressung durch zwei oder mehrere Rollen nur teilweise, wenn überhaupt, an der Gehäusewandung an. Diese Pumpen haben den Nachteil, daß mindestens zwei Pressrollen benötigt werden, um einen ständigen Schlauchabschluß und damit die Verdrängung des zu fördernden Mediums zu erreichen.In all previously known constructions, the tube only partially, if at all, lies against the housing wall during the pressing by two or more rollers. These pumps have the disadvantage that at least two press rollers are required in order to achieve a permanent hose seal and thus the displacement of the medium to be conveyed.

Es wurden auch Pumpen konstruiert, deren Rotoren mit mehreren Pressrollen ausgerüstet.sind, um die Förderimpulse zu verkleinern und dadurch einen möglichst gleichmäßigen Förderstrom zu erzeugen.Pumps were also designed, the rotors of which are equipped with several press rollers in order to reduce the delivery impulses and thereby generate a flow as even as possible.

Diese Maßnahmen haben wenig genützt und den Nachteil mit sich gebracht, daß der Schlauch bei jeder Umdrehung der Rotorwelle zwei-oder mehrmals entsprechend der Anzahl der Rollen gequetscht wurde. Dies hat sich sehr nachteilig auf die Lebensdauer der Schläuche ausgewirkt.These measures have been of little use and have the disadvantage that the hose has been squeezed two or more times with each revolution of the rotor shaft in accordance with the number of rollers. This has had a very negative effect on the life of the hoses.

Die Neuheit dieser Erfindung besteht darin; daß der Schlauch vollkommen kreisförmig geschlossen im Gehäuse gelagert ist und die Ein-und Austrittsenden um eine gequetschte Schlauchbreite versetzt nach außen führen.The novelty of this invention is; that the hose is mounted in a completely circular manner in the housing and the inlet and outlet ends lead outwards by a pinched hose width.

Diese Konstruktion erlaubt es, mit nur einer Rolle den gleichen Pumpeffekt zu erzielen, wobei pro Wellenumdrehung eine größere Leistung erreicht und der Schlauch nur einmal gequetscht wird, wodurch sich die Lebensdauer des Schlauches wesentlich verlängert.This construction allows the same pumping effect to be achieved with just one roller, with a higher output per shaft revolution and the hose being squeezed only once, which significantly extends the life of the hose.

Durch die Möglichkeit, den Verdrängungsvorgang bei gleicher Leistung langsamer ablaufen zu lassen als bei den bisher üblichen Schlauchpumpen mit mehreren Rollen, ergibt~sich ein schwächerer Förderimpuls, weil durch gleichzeitiges öffnen und Schließen im Schlauchverdrängungsraum durch die Elastizität des Schlauchmaterials eine Pulsierungsdämpfung in einem größeren elastischen Raum stattfindet, als dieses der Fall ist bei einer Arbeitsweise mit mehreren Rollen.The possibility of allowing the displacement process to run more slowly at the same output than with the previously common hose pumps with several rollers results in a weaker delivery impulse because opening and closing in the hose displacement simultaneously due to the elasticity of the hose material, pulsation damping takes place in a larger elastic space than is the case when working with several rollers.

Zur Vermeidung gegenseitiger Reibung muß der Schlauch an den Ein-und Austrittsenden fixiert werden.In order to avoid mutual friction, the hose must be fixed at the inlet and outlet ends.

Die Erfindung ist anhand der Zeichnung näher erläutert. Weitere Merkmale ergeben sich aus einer bevorzugten Ausführungsform in Verbindung mit der Zeichnung und den Ansprüchen.The invention is explained in more detail with reference to the drawing. Further features result from a preferred embodiment in connection with the drawing and the claims.

In der Zeichnung zeigt Figur I eine schematische Darstellung der zuvor beschriebenen Schlauchpumpe 1 mit einem Gehäuse 2, einem kreisförmig eingelegten Schlauch 3, der Anpressrolle 4, der Antriebswelle 6 und der schematisch angedeuteten federnd angeordneten Achse der Lagerrolle 5. Die Rolle 4 läuft auf der Schlauchoberfläche bei gleichzeitiger Quetschung des Schlauches 3 ab und verdrängt den Inhalt des Schlauches 3 in der Laufrichtung zum Pumpenauslaß 7, wobei gleichzeitig das hinter der Rolle 4 entstehende Vakuum das Fördermedium durch den Pumpeneinlaß 8 ansaugt. Der Pumpeneinlaß 8 und der Auslaß 7 liegen in einer Ebene. Dies ist ein wesentlicher Vorteil gegenüber bisher bekannten Konstruktionen, weil diese in einer gradlinigen Rohrleitung eingebaut werden kann, wobei die geringe Verschiebung der Ein- und Austrittsachsen, wie in Figur II und III dargestellt, keine Rolle spielt. Figur II zeigt den Querschnitt durch die Pumpe mit den angedeuteten Schlauchführungen 9, während in Figur III der Schlauchabstand X dargestellt ist, welcher für eine berührungslose Pressung des tangentialen Schlauchein- und austrittes erforderlich ist, und dabei auch die seitliche Verschiebung von Ansaugleitung zur Druckleitung in einer Ebene um das Maß X andeutet. Die Pumpenwelle 6 wird über eine elastische Kupplung über einen Getrfebemotor angetrieben, wenn die Schlammpumpe nur für Pumpzwecke eingesetzt werden soll. Will man diese gleichzeitig für Dosierung einsetzen, wird hierfür ein stufenlos regelbarer Getriebemotor gewählt.In the drawing, FIG. I shows a schematic representation of the hose pump 1 described above with a housing 2, a circularly inserted hose 3, the pressure roller 4, the drive shaft 6 and the schematically indicated spring-mounted axis of the bearing roller 5. The roller 4 runs on the hose surface with simultaneous squeezing of the hose 3 and displaces the content of the hose 3 in the running direction to the pump outlet 7, the vacuum created behind the roller 4 simultaneously sucking the pumped medium through the pump inlet 8. The pump inlet 8 and the outlet 7 lie in one plane. This is a significant advantage over previously known constructions because it can be installed in a straight pipe, the slight displacement of the entry and exit axes, as shown in FIGS. II and III, being irrelevant. Figure II shows the cross section through the pump with the indicated hose guides 9, while in Figure III the hose distance X is shown, which is required for a contactless pressing of the tangential hose inlet and outlet, and also the lateral displacement of the suction line to the pressure line in one Plane around the dimension X indicates. The pump shaft 6 is driven via an elastic coupling via a gear motor if the slurry pump is to be used only for pumping purposes. If you want to use them for dosing at the same time, a continuously variable gear motor is selected.

Das Gehäuse 2 ist mit einem herausnehmbaren Schauglas 12 oder Fenster versehen, um eine Nachregulierung der Anpressrolle 4 über die federnde Einstellvorrichtung 5 vorzunehmen. Der Pumpenschlauch 3 ist in den Ein- und Austrittstutzen 10 und 11 auf übliche Weise durch Schlauchschellen festgehalten, um eine gegenseitige Reibung der Ein- und Austrittschlauchenden am Punkte 0 zu verhindern. Die Schlauchführungen 9 verhindern, daß der Schlauch seitlich abwandert, was durch die spiralförmige Laufabwicklung der Rolle 4 an der Schlauchoberfläche verursacht wird. Eine Pumpe dieser Konstruktion kann in beiden Richtungen fördern und ist selbstansaugend.The housing 2 is provided with a removable sight glass 12 or window in order to readjust the pressure roller 4 via the resilient adjusting device 5. The pump hose 3 is in the inlet and outlet nozzle 10 and 11 in the usual way by hose clamped to prevent mutual friction between the inlet and outlet hose ends at point 0. The hose guides 9 prevent the hose from migrating sideways, which is caused by the spiral running development of the roller 4 on the hose surface. A pump of this design can deliver in both directions and is self-priming.

Die federnd gelagerte Pressrolle 4 erlaubt es, Schläuche mit ungleichem Aussendurchmesser zu verwenden. Bei Totalverschluß des Austritts wird Rolle 4 federnd nachgeben und ein Zerbersten des Schlauches verhindern.The spring-loaded press roller 4 allows hoses with an uneven outside diameter to be used. If the outlet is completely closed, roller 4 will yield resiliently and prevent the hose from bursting.

Bei den bisher bekannten Schlauchpumpen liegt der Schlauch nur in einem Kreisbogenstück von 120 bis max. 180° an der Gehäusewand an und wird in diesem Sektor von zwei oder mehreren Rollen angepresst. Somit verringert sich das Schlauchvolumen um das Volumen, welches die Rollenpressung erfordert, d.h. bei herkömmlichen Schlauchpumpen mit mehreren Rollen um die Rollenanzahl minus 1, gegenüber dem Einrollenprinzip dieser Patentanmeldung. Der Erfolg ist eine wesentlich größere Volumenverdrängung bei einer Umdrehung der Welle 6 und somit eine größere Pumpenleistung, wobei der Schlauch pro Wellenumdrehung nur einmal gequetscht wird, was wesentlich zur Haltbarkeit beiträgt. Ein weiterer Vorteil ist, daß hierbei die Pulsation gegenüber den Mehrrollenschlauchpumpen in längerem Intervall erfolgt und durch das große Schlauchvolumen und den größeren elastischen Schlauch eine bessere Pulsationsdämpfung erreicht wird.In the hose pumps known to date, the hose lies only in a circular arc from 120 to max. 180 ° on the housing wall and is pressed in this sector by two or more rollers. Thus the hose volume is reduced by the volume that the roller pressure requires, i.e. in conventional peristaltic pumps with several rollers by the number of rollers minus 1, compared to the single-roller principle of this patent application. The success is a significantly larger volume displacement with one revolution of the shaft 6 and thus a greater pump output, the hose being squeezed only once per shaft revolution, which contributes significantly to the durability. Another advantage is that the pulsation compared to the multi-roller hose pumps takes place in a longer interval and that the large hose volume and the larger elastic hose result in better pulsation damping.

Claims (6)

1. Schlauchpumpe mit einem zur Aufnahme eines Schlauches bestimmten Gehäuse, einer im Gehäuse gelagerten Welle und einer hieran befestigten, zum Zusammenpressen des Schlauches bestimmten Rolle, die federnd einstellbar gelagert ist;
gekennzeichnet durch einen elastischen Schlauch, der vollkommen kreisförmig im Gehäuse gelagert ist und dessen Ein- und Austrittsenden tangential in einer Ebene das Gehäuse verlassen.1. peristaltic pump with a housing intended for receiving a hose, a shaft mounted in the housing and a roller attached thereto, intended for compressing the hose, which is spring-adjustable adjustable;
characterized by an elastic hose that is completely circular in the housing and the inlet and outlet ends leave the housing tangentially in one plane. 2. Schlauchpumpe nach Anspruch 1, dadurch gekennzeichnet, daß nur eine Rolle die Zusammenpressung des Schlauches bewirkt.2. Hose pump according to claim 1, characterized in that only one roller causes the compression of the hose. 3. Schlauchpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Pressrolle federnd einstellbar gelagert ist.3. Peristaltic pump according to claim 1, characterized in that the press roller is spring-loaded adjustable. 4. Schlauchpumpe nach Anspruch 1, dadurch gekennzeichnet, daß der Gehäuse-Ein- und Austritt mindestens um.die Schlauchbreite des gedrückten Schlauches in der senkrechten Mittelachse gegeneinander versetzt sind.4. Peristaltic pump according to claim 1, characterized in that the housing inlet and outlet are offset at least by the hose width of the pressed hose in the vertical central axis. 5. Schlauchpumpe nach Anspruch 1, dadurch gekennzeichnet, daß beide Schlauchenden am Ein- und Austritt durch Hilfseinrichtungen fixiert sind.5. Hose pump according to claim 1, characterized in that both hose ends are fixed at the inlet and outlet by auxiliary devices. 6. Schlauchpumpe nach Anspruch 1, dadurch gekennzeichnet, daß Ein-und Austritt in einer Ebene liegen.6. Peristaltic pump according to claim 1, characterized in that the inlet and outlet lie in one plane.
EP82101321A 1981-05-13 1982-02-20 Flexible-hose pump Withdrawn EP0065073A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813118901 DE3118901A1 (en) 1981-05-13 1981-05-13 HOSE PUMP
DE3118901 1981-05-13

Publications (1)

Publication Number Publication Date
EP0065073A1 true EP0065073A1 (en) 1982-11-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP82101321A Withdrawn EP0065073A1 (en) 1981-05-13 1982-02-20 Flexible-hose pump

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EP (1) EP0065073A1 (en)
DE (1) DE3118901A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012023900A1 (en) 2012-12-07 2014-06-12 Meiko Maschinenbau Gmbh & Co. Kg delivery unit
CN107654357A (en) * 2017-11-17 2018-02-02 常州普瑞流体技术有限公司 Peristaltic pump idler wheel mechanism and peristaltic pump

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4447801B4 (en) * 1993-12-10 2009-02-05 Seiko Epson Corp. Hose pump for inkjet printers
CN108087250A (en) * 2017-11-28 2018-05-29 东莞市松研智达工业设计有限公司 A kind of peristaltic pump for weakening pulsation
CN110332100A (en) * 2019-07-24 2019-10-15 四川轻化工大学 Unit-arranged extrusion type peristaltic pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789514A (en) * 1953-03-13 1957-04-23 Richard N Hill Pump
US2826993A (en) * 1953-11-23 1958-03-18 Dunlop Tire & Rubber Corp Flexible hose fluid pump
FR1508185A (en) * 1966-11-14 1968-01-05 Device capable of conveying all liquids in the manner of a pump
US3674383A (en) * 1969-09-05 1972-07-04 Frank Iles Pumps
FR2431621A1 (en) * 1978-07-20 1980-02-15 Avri Sa Electric pump for windscreen washers - has pumping unit and electric motor disposed inside sealed container covered by lid, secured to give automatic assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789514A (en) * 1953-03-13 1957-04-23 Richard N Hill Pump
US2826993A (en) * 1953-11-23 1958-03-18 Dunlop Tire & Rubber Corp Flexible hose fluid pump
FR1508185A (en) * 1966-11-14 1968-01-05 Device capable of conveying all liquids in the manner of a pump
US3674383A (en) * 1969-09-05 1972-07-04 Frank Iles Pumps
FR2431621A1 (en) * 1978-07-20 1980-02-15 Avri Sa Electric pump for windscreen washers - has pumping unit and electric motor disposed inside sealed container covered by lid, secured to give automatic assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012023900A1 (en) 2012-12-07 2014-06-12 Meiko Maschinenbau Gmbh & Co. Kg delivery unit
WO2014086754A2 (en) 2012-12-07 2014-06-12 Meiko Maschinenbau Gmbh & Co. Kg Delivery unit
CN107654357A (en) * 2017-11-17 2018-02-02 常州普瑞流体技术有限公司 Peristaltic pump idler wheel mechanism and peristaltic pump

Also Published As

Publication number Publication date
DE3118901A1 (en) 1983-01-27

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