EP0577946A2 - Tube pump - Google Patents

Tube pump Download PDF

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Publication number
EP0577946A2
EP0577946A2 EP93107436A EP93107436A EP0577946A2 EP 0577946 A2 EP0577946 A2 EP 0577946A2 EP 93107436 A EP93107436 A EP 93107436A EP 93107436 A EP93107436 A EP 93107436A EP 0577946 A2 EP0577946 A2 EP 0577946A2
Authority
EP
European Patent Office
Prior art keywords
rotor
wall
pump
peristaltic pump
pump housing
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.)
Granted
Application number
EP93107436A
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German (de)
French (fr)
Other versions
EP0577946A3 (en
EP0577946B1 (en
Inventor
Werner Wehling
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.)
Allweiler GmbH
Original Assignee
Allweiler AG
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Filing date
Publication date
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Publication of EP0577946A2 publication Critical patent/EP0577946A2/en
Publication of EP0577946A3 publication Critical patent/EP0577946A3/xx
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Publication of EP0577946B1 publication Critical patent/EP0577946B1/en
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    • 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 peristaltic pump with an arranged in a pump housing at the bottom of the pump hose with elastically deformable wall, the - between two connection ends in a plan view approximately U-shaped - with a part-circularly curved section around a shaft of a rotor within the wall of the hose pump and this is inserted at a radial distance into the pump housing and the cross-section of which is partially changed during the delivery process by at least one organ of the rotor pressing the pump hose against an abutment, reducing the internal volume.
  • Such a peristaltic pump is described in GB-PS 628 785 with a pump hose and pressure rollers, which creates a chamber section closed off by two pinch points in the hose interior.
  • the pressure rollers roll as squeezing organs on the pump hose, which is supported on the housing wall, and with them those pinch points move in the conveying direction, whereby the conveyed material inside the hose is conveyed from the hose inlet to the outlet end of the pump hose; Thanks to the restoring force of the hose wall, the pinch point near the hose entrance causes suction force on the material to be conveyed in an upstream storage container which is drawn in and then transported from the chamber section described above to the outlet end of the pump hose.
  • the roller axes can be moved on a support frame, with the result that inaccurate settings are made especially when untrained personnel put their hands on the hose pump.
  • the inventor has set itself the goal of creating a peristaltic pump of the type described at the outset with which the identified defects are remedied.
  • the rotor is formed like a bowl from a rotor base and a rotor wall and these are directed towards the bottom of the pump housing, the shaft of the rotor being attached directly to its rotor base.
  • the rotor base and the drive shaft of the rotor are to be formed in one piece, that is to say they are designed as a one-piece construction.
  • the rotor ring is formed on one side on the rotor base and the latter is arranged opposite the pump housing base.
  • the housing base can be brought up directly to the rotor base and the harmful space can thus be considerably reduced.
  • a slide shoe - preferably a pair - projects from the rotor wall as the organ squeezing the pump tube with a radially outward sliding surface toward the pump tube.
  • the cantilever width of the sliding shoe is preferably reduced from a maximum to both sides of the sliding surface; the diameter of the rotor through the maximum serves as a line of symmetry.
  • its outer contour corresponds in plan view approximately to that of a half oval cut in its long axis.
  • the sliding shoe between the sliding surface and the rotor is provided with through openings for lubricants or coolants, the sliding surface preferably being formed along a wall of the sliding shoe and this can limit the through openings in the sliding shoe.
  • the rotor base is also provided with at least one opening for the lubricant or coolant, it being possible for at least one of the openings in the rotor base to be adjacent to the sliding shoe.
  • the breakthrough is assigned at least one conveying scoop which rises from the rotor bottom and can extend, for example, from the maximum of the sliding shoe on both sides along the side edge of the opening in the rotor bottom.
  • the latter provisions serve to optimize the lubrication and cooling of the sliding block and the pump hose; the lubricant / coolant level is increased to such an extent that an increased lubricant / coolant flow and an even temperature distribution over the pump housing are possible due to the delivery vanes on the pump cover side of the rotor and through the passage openings in the slide shoe as well as the backflow openings in the rotor base.
  • a peristaltic pump 10 has, in a bowl-like pump housing 12, an inner diameter d of approximately 320 mm and a height h of approximately 75 mm, a rotor 14 which can be rotated on a pump shaft 16 about its axis line A.
  • the pump shaft 16 is mounted in the region of a central bearing neck 18, which has an average outside diameter b of approximately 95 mm, of the pump housing 12, which is made of rigid material and is preferably cast from metal, by means of an axial bearing 20 and a radial bearing 22, between which a spacer bush 24 the pump shaft 16 surrounds.
  • This spacer bush 24 is surrounded by a locking ring 26 for the axial bearing 20 and a locking ring 27 for the radial bearing 22.
  • a space for bearing grease between the locking rings 26, 27 is designated, with 30 a spacer ring for the thrust bearing 20 within an intermediate ring 26a, which an outer splash ring 32 is adjacent.
  • a sealing element 34 adjoins the radial bearing 22 on the rotor side on an outer support ring 27a towards the rotor 14.
  • the bottom 38 integrally formed on the wall 36 of the pump housing 12 is made up of a bottom section 38a with a cross-sectional length n of approximately more than 55 mm, which is approximately perpendicular to the wall 36, and an inclined angle starting from the latter at an inclination angle w of approximately 120 °
  • the bearing neck 18 protrudes slightly with an annular rib 19 receiving that WDR element 34 axially over the annular bottom portion 38c to the rotor 14.
  • the rotor 14 integrally formed on the pump shaft 16 is also bowl-shaped with a rotor wall 15 immersed in the channel space 40 filled with lubricant or coolant and extending from a rotor base 13, and from its outer surface there are molded knobs 42 and Top view of horseshoe-like conveyor blades 43. These surround openings 44 in the rotor base 13, as shown in particular in FIG. 1.
  • the outer diameter a of the rotor 14 measures approximately 220 mm, so that the mean radial distance i of the rotor wall 15 in that channel space 40 from the housing wall 36 is calculated to be almost 50 mm.
  • the runner wall 15 is penetrated by two screws 45 for attaching an adjusting plate 46 and a sliding shoe 48, which according to FIG. 1 offers a curved sliding surface 49 with a maximum distance q of somewhat more than 20 mm from the runner wall 15 and one through an angle t of a length of approximately 65 °.
  • the contour of the sliding surface 49 in plan view corresponds approximately to that of a half oval, cut in the longer axis of the oval.
  • the slide shoe 48 which is provided with triangular through openings 47 in plan view, partially compresses a pump hose 50 of an outer diameter e of approximately 52 mm, which is arranged in its groove 40 between the wall 36 of the pump housing 12 and the rotor wall 15, during rotation of the rotor 14 that the volume of the tube interior 51 temporarily goes to zero and so within the pump tube 50 a delivery chamber for the medium to be delivered - for example paint, industrial lye or the like. - arises; this is carried along by the described pinch point during the rotation of the rotor 14.
  • the pump hose 50 made of flexibly deformable material extends - as said: in the channel space 40 - in a U-shape between two mutually parallel wall connections 52 of the pump housing 12 and its hose ends 53 each connect to an enclosed pump connection 54 within the wall connection 52.
  • This is equipped with a radial outer rib 56 which abuts on the inside of a stuffing box gland 58 screwed to the wall socket 52 and projects into the hose interior (51) with an insertion section (55) which ends near the pump wall (36).
  • the gland packing 58 holds sealing rubber-elastic packing rings 60 and a gland base ring 61 which rests against a shoulder-like gland base 62. Its distance from the inner surface 35 of the wall 36 corresponds approximately to its wall thickness y of approximately 8 mm.
  • One pump connection 54 forms the inlet connection of the hose pump 10, into which the medium to be pumped is drawn in thanks to a suction force generated by the restoring force of the pump hose 50.
  • the other pump nozzle 54 serves as a discharge for the medium being pumped.
  • the pump hose 50 is clamped directly on the wall 36 of the pump housing 12 on the inside diameter d, the shoulder-like gland 62 between this inside diameter d and a tangent Q to the inside surface 35 of the wall 36 through its intersection N with that parallel to the central axes M of the wall socket 52 Pump diameter D arranged.
  • the pump tubing 50 is clamped by means of an elastomer stuffing box 60 inside the pump housing 12, which reduces the specific clamping forces on the pump tubing 50 and also ensures its sealing against the pump housing 12.
  • 1 shows a gap 64 tapering from that gland base to the inside of the pump between the inner wall surface 35 and the pump hose 50 which is thereby sealed; the latter does not touch the pump housing 12 all around at the clamping point, which is confirmed by the distance designated 64a on the opposite hose flank in FIG. 1 and the inner diameter k of the wall socket 36; this is larger than the hose outer diameter e.
  • the wall 36 of the pump housing 12 merges into an integrally formed outer flange 37, which - with the interposition of a sealing ring 65 - has a pump cover 66 screwed to it, from which an outlet connector 68 of small diameter is formed and can be closed by a screw plug 69 with sealing ring 70 is.
  • a further axially parallel bushing 72 - compared to the outlet port 68 - of larger diameter, which projects laterally from the path of movement of the rotor wall 15 and sliding block 48 and axially with a sight glass 73 and radially with a branch 74 is equipped as a filling element.

Abstract

In a tube pump with, arranged in a pump housing on its bottom, a pump tube with elastically deformable wall which is inserted into the pump housing with a part-circularly bent section around a shaft of a rotor inside the wall of the tube pump as well as at a radial spacing therefrom and the cross-section of which, during the delivery operation, is modified partially by at least one member of the rotor which presses the pump tube cross-sectionally against an abutment, the inner volume being reduced, the rotor (14) is formed in the manner of a bowl from a rotor bottom (13) and a rotor wall (15) and the latter is directed towards the bottom (38) of the pump housing (12), the shaft (16) of the rotor being attached directly to its rotor bottom. <IMAGE>

Description

Die Erfindung betrifft eine Schlauchpumpe mit in einem Pumpengehäuse an dessen Boden angeordnetem Pumpschlauch mit elastisch verformbarer Wandung, der -- zwischen zwei Anschlußenden in Draufsicht etwa U-förmig -- mit einem teilkreisförmig gebogenen Abschnitt um eine Welle eines Läufers innerhalb der Wandung der Schlauchpumpe sowie zu dieser in radialem Abstand in das Pumpengehäuse eingelegt ist und dessen Querschnitt während des Fördervorganges durch wenigstens ein den Pumpschlauch querschnittlich gegen ein Widerlager drückendes Organ des Läufers unter Verminderung des Innenvolumens partiell verändert wird.The invention relates to a peristaltic pump with an arranged in a pump housing at the bottom of the pump hose with elastically deformable wall, the - between two connection ends in a plan view approximately U-shaped - with a part-circularly curved section around a shaft of a rotor within the wall of the hose pump and this is inserted at a radial distance into the pump housing and the cross-section of which is partially changed during the delivery process by at least one organ of the rotor pressing the pump hose against an abutment, reducing the internal volume.

Eine derartige peristaltische Pumpe beschreibt die GB-PS 628 785 mit einem Pumpschlauch und Druckrollen, die im Schlauchinnenraum einen durch zwei Quetschstellen abgeschlossenen Kammerabschnitt erzeugt. Beim Drehen des Läufers wälzen sich die Druckrollen als quetschende Organe an dem sich an der Gehäusewandung abstützend festliegenden Pumpschlauch ab, und mit ihnen verschieben sich jene Quetschstellen in Förderrichtung, wodurch das im Schlauchinnenraum vorhandene Fördergut vom Schlaucheingang zum Austrittsende des Pumpschlauches gefördert wird; die dem Schlaucheingang nahe Quetschstelle bewirkt dank der Rückstellkraft der Schlauchwandung eine Saugkraft auf in einem vorgeschalteten Vorratsbehälter vorhandenes Fördergut, das so eingezogen und dann von dem oben beschriebenen Kammerabschnitt zum Austrittsende des Pumpschlauches transportiert wird.Such a peristaltic pump is described in GB-PS 628 785 with a pump hose and pressure rollers, which creates a chamber section closed off by two pinch points in the hose interior. When the rotor rotates, the pressure rollers roll as squeezing organs on the pump hose, which is supported on the housing wall, and with them those pinch points move in the conveying direction, whereby the conveyed material inside the hose is conveyed from the hose inlet to the outlet end of the pump hose; Thanks to the restoring force of the hose wall, the pinch point near the hose entrance causes suction force on the material to be conveyed in an upstream storage container which is drawn in and then transported from the chamber section described above to the outlet end of the pump hose.

Um das Andruckverhalten zwischen Pumpschlauch und Druckrolle beeinflussen zu können, sind die Rollenachsen auf einem Traggerüst verschiebbar mit der Folge, daß ungenaue Einstellungen vor allem dann erfolgen, wenn ungeschultes Personal Hand an die Schlauchpumpe legt.In order to be able to influence the pressure behavior between the pump hose and the pressure roller, the roller axes can be moved on a support frame, with the result that inaccurate settings are made especially when untrained personnel put their hands on the hose pump.

Beim Stande der Technik sind ungleichmäßige Pressungen auf dem Pumpschlauch nicht zu vermeiden - und dadurch negative Beeinflussungen der Lebensdauer des Pumpschlauches durch nicht parallele Verformung von Pumpengehäuse und Läufer, bedingt durch eine einseitige Kraftableitung von der Pumpengehäusewandung in den Gehäuseboden und mittige Kraftableitung vom Läuferkranz über Speichen in die Läufernabe.In the state of the art, uneven pressures on the pump hose cannot be avoided - and thus negative influences on the service life of the pump hose due to non-parallel deformation of the pump housing and rotor, due to one-sided force transmission from the pump housing wall in the housing base and central force dissipation from the rotor ring via the spokes in the runner hub.

Ganz allgemein hat sich bei bekannten Schlauchpumpen ein großer schädlicher Raum -- mit Schmier-/Kühlmittel bzw. bei Schlauchbruch mit Förderflüssigkeit gefüllter Raum -- mit gleichbleibender Tiefe über den gesamten Pumpengehäusequerschnitt als nachteilig erwiesen. Ein Schmieren und Kühlen des quetschenden Organs des Gleitschuhs und des Pumpschlauches durch Eintauchen und Ansprühen konnte keine Abhilfe schaffen.In general, in known peristaltic pumps, a large, harmful space - a space filled with lubricant / coolant or, in the event of a hose rupture - with a conveying liquid - with a constant depth over the entire cross section of the pump housing has proven to be disadvantageous. Lubricating and cooling the squeezing organ of the slide shoe and the pump hose by immersion and spraying on could not remedy the situation.

Diese Mängel sind nicht auch deshalb von Bedeutung, da zum einen -- insbesondere bei unsauberen oder aggressiven Fördermedien -- das Platzen oder Ausbrechen eines Pumpschlauches zu einer höchst unerwünschten Kontaminierung des Pumpenumfeldes führen kann und zum anderen das Wechseln des Pumpschlauches besonders kostenträchtig ist.These shortcomings are not of importance because on the one hand - especially with dirty or aggressive fluids - the bursting or breaking out of a pump hose can lead to a highly undesirable contamination of the pump environment and on the other hand changing the pump hose is particularly costly.

In Kenntnis dieses Standes der Technik hat sich der Erfinder das Ziel gesetzt, eine peristaltische Pumpe der eingangs beschriebenen Art zu schaffen, mit welcher die erkannten Mängel behoben werden.Knowing this state of the art, the inventor has set itself the goal of creating a peristaltic pump of the type described at the outset with which the identified defects are remedied.

Zur Lösung dieser Aufgabe führt die Lehre des unabhängigen Patentanspruches; die Unteransprüche bieten günstige Ausgestaltungen an.The teaching of the independent claim leads to solving this problem; the subclaims offer favorable configurations.

Dank dieser Lehre wird eine gleichmäßige Pressung und Erhöhung der Lebensdauer des Pumpschlauches erreicht sowie eine Reduzierung des schädlichen Raumes bei gleichzeitiger Optimierung der Schmierung und Kühlung des quetschenden Organs und des Pumpschlauches.Thanks to this teaching, an even pressure and an increase in the service life of the pump hose are achieved, as well as a reduction in the harmful space while simultaneously optimizing the lubrication and cooling of the squeezing organ and the pump hose.

Erfindungsgemäß ist der Läufer schüsselartig aus einem Läuferboden und einer Läuferwand ausgebildet und diese zum Boden des Pumpengehäuses gerichtet, wobei die Welle des Läufers direkt an dessen Läuferboden angesetzt ist. Zudem sollen nach einem weiteren Merkmal der Erfindung der Läuferboden und die Antriebswelle des Läufers einstückig geformt, also als einteilige Konstruktion ausgebildet sein.According to the invention, the rotor is formed like a bowl from a rotor base and a rotor wall and these are directed towards the bottom of the pump housing, the shaft of the rotor being attached directly to its rotor base. In addition, according to a further feature of the invention, the rotor base and the drive shaft of the rotor are to be formed in one piece, that is to say they are designed as a one-piece construction.

Als günstig hat es sich erwiesen, bei dem schüsselartigen Pumpengehäuse im Querschnitt einen an die Wandung etwa rechtwinkelig angeformten Bodenabschnitt und einen davon in einem Neigungswinkel läuferwärts geneigten Bodenabschnitt vorzusehen, wobei diese Bodenabschnitte mit der Pumpenwandung einen Rinnenraum des Pumpengehäuses begrenzen, in welchen die Läuferwand eintaucht.It has proven to be advantageous to provide the bowl-like pump housing in cross-section with a bottom section formed approximately at right angles to the wall and a bottom section inclined therefrom at an angle of inclination, these bottom sections with the pump wall delimiting a channel space of the pump housing into which the rotor wall is immersed.

So wird also der Läuferkranz einseitig am Läuferboden angeformt und letzterer gegenüber dem Pumpengehäuseboden angeordnet.So the rotor ring is formed on one side on the rotor base and the latter is arranged opposite the pump housing base.

Die durch die Hydraulik bzw. durch die während des Fördervorganges durch die Schlauchpressung erzeugten Kräfte verformen Pumpengehäuse und Läufer gegenläufig, wodurch eine größere Parallelität der Preßflächen und somit eine gleichmäßigere Pressung bei gleichzeitiger Erhöhung der Lebensdauer des Pumpschlauches erreicht werden.The forces generated by the hydraulics or by the forces generated by the hose pressure during the pumping process deform the pump housing and rotor in opposite directions, as a result of which a greater parallelism of the pressing surfaces and thus a more uniform pressure are achieved while simultaneously increasing the service life of the pump hose.

Durch die erfindungsgemäß entfallende -- beim Stand der Technik vorhandene -- Welle-/Nabenverbindung kann der Gehäuseboden bis direkt an den Läuferboden herangeführt und somit der schädliche Raum erheblich reduziert werden.As a result of the shaft / hub connection which is omitted in accordance with the invention and which is present in the prior art, the housing base can be brought up directly to the rotor base and the harmful space can thus be considerably reduced.

Bei der erfindungsgemäßen Schlauchpumpe ragt von der Läuferwand als den Pumpschlauch quetschendes Organ ein Gleitschuh - - bevorzugt ein Paar -- mit einer radial nach außen gerichteten Gleitfläche zum Pumpschlauch hin ab. Dabei vermindert sich bevorzugt die Kragweite des Gleitschuhs von einem Maximum zu beiden Seiten der Gleitfläche hin; der Durchmesser des Läufers durch das Maximum dient dabei als Symmetriegerade.In the peristaltic pump according to the invention, a slide shoe - preferably a pair - projects from the rotor wall as the organ squeezing the pump tube with a radially outward sliding surface toward the pump tube. The cantilever width of the sliding shoe is preferably reduced from a maximum to both sides of the sliding surface; the diameter of the rotor through the maximum serves as a line of symmetry.

Bei einer vorteilhaften Ausgestaltung des Gleitschuhs entspricht dessen Außenkontur in Draufsicht etwa derjenigen eines in seiner langen Achse geschnittenen halben Ovals.In an advantageous embodiment of the slide shoe, its outer contour corresponds in plan view approximately to that of a half oval cut in its long axis.

Nach einem weiteren Merkmal der Erfindung ist der Gleitschuh zwischen Gleitfläche und Läufer mit Durchtrittsöffnungen für Gleit- oder Kühlmittel versehen, wobei bevorzugt die Gleitfläche entlang einer Wand des Gleitschuhs ausgebildet und diese die Durchtrittsöffnungen im Gleitschuh begrenzen kann.According to a further feature of the invention, the sliding shoe between the sliding surface and the rotor is provided with through openings for lubricants or coolants, the sliding surface preferably being formed along a wall of the sliding shoe and this can limit the through openings in the sliding shoe.

Im Rahmen der Erfindung ist auch der Läuferboden mit zumindest einem Durchbruch für das Gleit- oder Kühlmittel versehen, wobei dem Gleitschuh wenigstens einer der Durchbrüche im Läuferboden benachbart sein kann.In the context of the invention, the rotor base is also provided with at least one opening for the lubricant or coolant, it being possible for at least one of the openings in the rotor base to be adjacent to the sliding shoe.

Dem Durchbruch ist erfindungsgemäß wenigstens eine vom Läuferboden aufragende Förderschaufel zugeordnet, die sich beispielsweise vom Maximum des Gleitschuhs beidseits entlang dem Seitenrand des Durchbruches im Läuferboden erstrecken kann.According to the invention, the breakthrough is assigned at least one conveying scoop which rises from the rotor bottom and can extend, for example, from the maximum of the sliding shoe on both sides along the side edge of the opening in the rotor bottom.

Die letztgenannten Maßgaben dienen der Optimierung der Schmierung und Kühlung des Gleitschuhs und des Pumpschlauches; der Schmier-/Kühlmittelstand wird soweit erhöht, daß durch die auf der Pumpendeckelseite des Läufers angebrachten Förderschaufeln und durch die Durchtrittsöffnungen im Gleitschuh sowie die Rückflußöffnungen im Läuferboden ein verstärkter Schmier-/Kühlmittelfluß und eine gleichmäßige Temperaturverteilung über das Pumpengehäuse möglich werden.The latter provisions serve to optimize the lubrication and cooling of the sliding block and the pump hose; the lubricant / coolant level is increased to such an extent that an increased lubricant / coolant flow and an even temperature distribution over the pump housing are possible due to the delivery vanes on the pump cover side of the rotor and through the passage openings in the slide shoe as well as the backflow openings in the rotor base.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispieles sowie anhand der Zeichnung; diese zeigt in

Fig. 1:
die Draufsicht auf eine teilweise geschnittene Pumpe und
Fig. 2:
den Schnitt durch Fig. 1 nach deren Linie II-II.
Further advantages, features and details of the invention result from the following description of a preferred exemplary embodiment and from the drawing; this shows in
Fig. 1:
the top view of a partially cut pump and
Fig. 2:
the section through Fig. 1 along the line II-II.

Eine Schlauchpumpe 10 weist in einem schüsselartigen Pumpengehäuse 12 eines Innendurchmessers d von etwa 320 mm und einer Höhe h von etwa 75 mm einen Läufer 14 auf, der an einer Pumpenwelle 16 um deren Achslinie A drehbar ist.A peristaltic pump 10 has, in a bowl-like pump housing 12, an inner diameter d of approximately 320 mm and a height h of approximately 75 mm, a rotor 14 which can be rotated on a pump shaft 16 about its axis line A.

Die Pumpenwelle 16 ist im Bereich eines -- einen mittleren Außendurchmesser b von etwa 95 mm besitzenden -- zentrischen Lagerhalses 18 des aus starrem Werkstoff bestehenden, bevorzugt aus Metall gegossenen Pumpengehäuses 12 mittels eines Axiallagers 20 und eines Radiallagers 22 gelagert, zwischen denen eine Distanzbüchse 24 die Pumpenwelle 16 umfängt. Diese Distanzbüchse 24 ist von einem Sicherungsring 26 für das Axiallager 20 sowie einem Sicherungsring 27 für das Radiallager 22 umgeben. Mit 28 ist ein Raum für Lagerfett zwischen den Sicherungsringen 26, 27 bezeichnet, mit 30 ein Abstandsring für das Axiallager 20 innerhalb eines Zwischenringes 26a, dem ein äußerer Spritzring 32 benachbart ist. An das Radiallager 22 schließt läuferseitig an einen äußeren Stützring 27a zum Läufer 14 hin ein Dichtelement 34 an.The pump shaft 16 is mounted in the region of a central bearing neck 18, which has an average outside diameter b of approximately 95 mm, of the pump housing 12, which is made of rigid material and is preferably cast from metal, by means of an axial bearing 20 and a radial bearing 22, between which a spacer bush 24 the pump shaft 16 surrounds. This spacer bush 24 is surrounded by a locking ring 26 for the axial bearing 20 and a locking ring 27 for the radial bearing 22. With 28 a space for bearing grease between the locking rings 26, 27 is designated, with 30 a spacer ring for the thrust bearing 20 within an intermediate ring 26a, which an outer splash ring 32 is adjacent. A sealing element 34 adjoins the radial bearing 22 on the rotor side on an outer support ring 27a towards the rotor 14.

Der an die Wandung 36 des Pumpengehäuses 12 angeformte Boden 38 setzt sich gemäß Fig. 2 querschnittlich aus einem zur Wandung 36 etwa rechtwinkeligen Bodenabschnitt 38a der Querschnittslänge n von etwas mehr als 55 mm, einem von diesem in einem Neigungswinkel w von etwa 120° ausgehenden geneigten Bodenabschnitt 38b sowie einem ringförmigen Bodenabschnitt 38c der Querschnittslänge n1 von etwa 25 mm zusammen, der sich -- parallel zum erstgenannten Bodenabschnitt 38a -- vom geneigten Bodenabschnitt 38b zum Lagerhals 18 erstreckt und an diesen angeformt ist. Der Lagerhals 18 ragt geringfügig mit einer jenes WDR-Element 34 aufnehmenden Ringrippe 19 axial über den ringförmigen Bodenabschnitt 38c zum Läufer 14 hin.According to FIG. 2, the bottom 38 integrally formed on the wall 36 of the pump housing 12 is made up of a bottom section 38a with a cross-sectional length n of approximately more than 55 mm, which is approximately perpendicular to the wall 36, and an inclined angle starting from the latter at an inclination angle w of approximately 120 ° Bottom portion 38b and an annular bottom portion 38c of cross-sectional length n1 of about 25 mm, which extends - parallel to the first-mentioned bottom portion 38a - from the inclined bottom portion 38b to the bearing neck 18 and is integrally formed thereon. The bearing neck 18 protrudes slightly with an annular rib 19 receiving that WDR element 34 axially over the annular bottom portion 38c to the rotor 14.

Die Wandung 36 und der anschließende Bodenabschnitt 38a des Pumpengehäuses 12 begrenzen mit dem geneigten Bodenabschnitt 38b einen i.w. ringförmigen Rinnenraum 40. An die Außenseite des Bodens 38 sind Anschlußlaschen 39 zur Pumpenmontage angegossen.The wall 36 and the adjoining bottom section 38a of the pump housing 12 delimit an i.w. ring-shaped channel space 40. On the outside of the bottom 38 connecting tabs 39 are cast for pump assembly.

Der an die Pumpenwelle 16 angeformte Läufer 14 ist mit einer in dem -- mit Gleit- oder Kühlmittel gefüllten -- Rinnenraum 40 eintauchenden, von einem Läuferboden 13 ausgehenden Läuferwand 15 ebenfalls schüsselähnlich ausgebildet, und von seiner äußeren Fläche stehen Formnoppen 42 und -- in Draufsicht hufeisenähnliche -- Förderschaufeln 43 ab. Diese umgeben Durchbrüche 44 im Läuferboden 13, wie vor allem Fig. 1 zeigt. Der Außendurchmesser a des Läufers 14 mißt etwa 220 mm, so daß sich der mittlere radiale Abstand i der Läuferwandung 15 in jenem Rinnenraum 40 von der Gehäusewandung 36 mit nahezu 50 mm errechnet.The rotor 14 integrally formed on the pump shaft 16 is also bowl-shaped with a rotor wall 15 immersed in the channel space 40 filled with lubricant or coolant and extending from a rotor base 13, and from its outer surface there are molded knobs 42 and Top view of horseshoe-like conveyor blades 43. These surround openings 44 in the rotor base 13, as shown in particular in FIG. 1. The outer diameter a of the rotor 14 measures approximately 220 mm, so that the mean radial distance i of the rotor wall 15 in that channel space 40 from the housing wall 36 is calculated to be almost 50 mm.

Die Läuferwand 15 wird von zwei Schrauben 45 zur Befestigung jeweils eines Anstellbleches 46 und eines Gleitschuhs 48 durchsetzt, der gemäß Fig. 1 eine gekrümmte Gleitfläche 49 anbietet mit einem maximalen Abstand q von etwas mehr als 20 mm von der Läuferwand 15 sowie einer durch einen Winkel t von etwa 65° bestimmten Länge. Die Kontur der Gleitfläche 49 in Draufsicht entspricht etwa der eines halben Ovals, geschnitten in der längeren Achse des Ovals.The runner wall 15 is penetrated by two screws 45 for attaching an adjusting plate 46 and a sliding shoe 48, which according to FIG. 1 offers a curved sliding surface 49 with a maximum distance q of somewhat more than 20 mm from the runner wall 15 and one through an angle t of a length of approximately 65 °. The contour of the sliding surface 49 in plan view corresponds approximately to that of a half oval, cut in the longer axis of the oval.

Der mit in Draufsicht dreiecksartigen Durchtrittsöffnungen 47 versehene Gleitschuh 48 drückt während der Drehung des Läufers 14 einen -- in seinem Rinnenraum 40 zwischen der Wandung 36 des Pumpengehäuses 12 sowie der Läuferwand 15 -- angeordneten Pumpschlauch 50 eines Außendurchmessers e von etwa 52 mm partiell so zusammen, daß das Volumen des Schlauchinnenraumes 51 zeitweilig gegen null geht und so innerhalb des Pumpschlauches 50 eine Förderkammer für zu förderndes Medium -- beispielsweise Farbe, Industrielauge od.dgl. -- entsteht; dieses wird während der Drehung des Läufers 14 durch die beschriebene Quetschstelle mitgenommen.The slide shoe 48, which is provided with triangular through openings 47 in plan view, partially compresses a pump hose 50 of an outer diameter e of approximately 52 mm, which is arranged in its groove 40 between the wall 36 of the pump housing 12 and the rotor wall 15, during rotation of the rotor 14 that the volume of the tube interior 51 temporarily goes to zero and so within the pump tube 50 a delivery chamber for the medium to be delivered - for example paint, industrial lye or the like. - arises; this is carried along by the described pinch point during the rotation of the rotor 14.

Der Pumpenschlauch 50 aus flexibel verformbarem Werkstoff erstreckt sich -- wie gesagt: im Rinnenraum 40 -- U-förmig zwischen zwei zueinander parallelen Wandstutzen 52 des Pumpengehäuses 12 und seine Schlauchenden 53 schließen innerhalb der Wandstutzen 52 jeweils an einen eingeschlossenen Pumpenstutzen 54 an. Dieser ist mit einer radialen Außenrippe 56 ausgestattet, die innenseitig an eine am Wandstutzen 52 verschraubte Stopfbuchsbrille 58 anschlägt, und ragt in den Schlauchinnenraum (51) mit einem Einsteckabschnitt (55) ein, das nahe der Pumpenwandung (36) endet.The pump hose 50 made of flexibly deformable material extends - as said: in the channel space 40 - in a U-shape between two mutually parallel wall connections 52 of the pump housing 12 and its hose ends 53 each connect to an enclosed pump connection 54 within the wall connection 52. This is equipped with a radial outer rib 56 which abuts on the inside of a stuffing box gland 58 screwed to the wall socket 52 and projects into the hose interior (51) with an insertion section (55) which ends near the pump wall (36).

Die Stopfbuchsenbrille 58 hält dichtende kautschukelastische Packungsringe 60 und einen Stopfbuchsgrundring 61, der einem schulterartigen Stopfbuchsengrund 62 anliegt. Dessen Abstand zur Innenfläche 35 der Wandung 36 entspricht etwa deren Wanddicke y von etwa 8 mm.The gland packing 58 holds sealing rubber-elastic packing rings 60 and a gland base ring 61 which rests against a shoulder-like gland base 62. Its distance from the inner surface 35 of the wall 36 corresponds approximately to its wall thickness y of approximately 8 mm.

Der eine Pumpenstutzen 54 bildet den Einlaufanschluß der Schlauchpumpe 10, in welche das zu fördernde Medium dank einer durch die Rückstellkraft des Pumpschlauches 50 erzeugten Saugkraft eingezogen wird. Der andere Pumpstutzen 54 dient als Austrag für das geförderte Medium.One pump connection 54 forms the inlet connection of the hose pump 10, into which the medium to be pumped is drawn in thanks to a suction force generated by the restoring force of the pump hose 50. The other pump nozzle 54 serves as a discharge for the medium being pumped.

Der Pumpschlauch 50 ist unmittelbar an der Wandung 36 des Pumpengehäuses 12 am Innendurchmesser d eingespannt, der schulterartige Stopfbuchsgrund 62 zwischen diesem Innendurchmesser d und einer Tangente Q an die Innenfläche 35 der Wandung 36 durch deren Schnittpunkt N mit dem zu den Mittelachsen M der Wandstutzen 52 parallelen Pumpendurchmesser D angeordnet.The pump hose 50 is clamped directly on the wall 36 of the pump housing 12 on the inside diameter d, the shoulder-like gland 62 between this inside diameter d and a tangent Q to the inside surface 35 of the wall 36 through its intersection N with that parallel to the central axes M of the wall socket 52 Pump diameter D arranged.

Die Einspannung des Pumpschlauches 50 geschieht mittels einer Elastomerstopfbuchse 60 innerhalb des Pumpengehäuses 12, was die spezifischen Einspannkräfte am Pumpschlauch 50 vermindert und zudem dessen Abdichtung gegenüber dem Pumpengehäuse 12 gewährleistet. Fig. 1 läßt einen sich von jenem Stopfbuchsengrund zum Pumpeninneren hin verjüngenden Spalt 64 zwischen der Wandungsinnenfläche 35 und dem dadurch dichtend gelagerten Pumpschlauch 50 erkennen; letzterer berührt umlaufend an der Einspannstelle das Pumpengehäuse 12 nicht, was der mit 64a bezeichnete Abstand an der gegenüberliegenden Schlauchflanke in Fig. 1 und der innere Durchmesser k des Wandstutzens 36 bestätigen; dieser ist größer als der Schlauchaußendurchmesser e.The pump tubing 50 is clamped by means of an elastomer stuffing box 60 inside the pump housing 12, which reduces the specific clamping forces on the pump tubing 50 and also ensures its sealing against the pump housing 12. 1 shows a gap 64 tapering from that gland base to the inside of the pump between the inner wall surface 35 and the pump hose 50 which is thereby sealed; the latter does not touch the pump housing 12 all around at the clamping point, which is confirmed by the distance designated 64a on the opposite hose flank in FIG. 1 and the inner diameter k of the wall socket 36; this is larger than the hose outer diameter e.

Die oben erwähnten Durchtrittsöffnungen 47 im Gleitschuh 48 sowie Durchbrüche 44 im Läuferboden 13 als Rückflußöffnungen begünstigen den Kühlmittelfluß.The above-mentioned passage openings 47 in the slide shoe 48 and openings 44 in the rotor bottom 13 as reflux openings favor the coolant flow.

Die Wandung 36 des Pumpengehäuses 12 geht randwärts in einen angeformten Außenflansch 37 über, dem -- unter Zwischenschaltung eines Dichtringes 65 -- ein mit ihm verschraubter Pumpendeckel 66 aufsitzt, aus dem ein Auslaßstutzen 68 geringen Durchmessers herausgeformt und von einer Verschlußschraube 69 mit Dichtring 70 verschließbar ist. Nahe dem in Fig. 2 oberen Ende des Pumpendeckels 66 findet sich eine weitere achsparallele Büchsenanformung 72 -- gegenüber Auslaßstutzen 68 -- größeren Durchmessers, die seitlich der Bewegungsbahn von Läuferwand 15 und Gleitschuh 48 abragt sowie axial mit einem Schauglas 73 sowie radial mit einem Abzweig 74 als Einfüllelement ausgestattet ist.The wall 36 of the pump housing 12 merges into an integrally formed outer flange 37, which - with the interposition of a sealing ring 65 - has a pump cover 66 screwed to it, from which an outlet connector 68 of small diameter is formed and can be closed by a screw plug 69 with sealing ring 70 is. Near the upper end of the pump cover 66 in FIG. 2 there is a further axially parallel bushing 72 - compared to the outlet port 68 - of larger diameter, which projects laterally from the path of movement of the rotor wall 15 and sliding block 48 and axially with a sight glass 73 and radially with a branch 74 is equipped as a filling element.

Claims (10)

Schlauchpumpe mit in einem Pumpengehäuse an dessen Boden angeordnetem Pumpschlauch mit elastisch verformbarer Wandung, der mit einem teilkreisförmig gebogenen Abschnitt um eine Welle eines Läufers innerhalb der Wandung der Schlauchpumpe sowie zu dieser in radialem Abstand in das Pumpengehäuse eingelegt ist und dessen Querschnitt während des Fördervorganges durch wenigstens ein den Pumpschlauch querschnittlich gegen ein Widerlager drückendes Organ des Läufers unter Verminderung des Innenvolumens partiell verändert wird,
dadurch gekennzeichnet,
daß der Läufer (14) schüsselartig aus einem Läuferboden (13) und einer Läuferwand (15) ausgebildet und diese zum Boden (38) des Pumpengehäuses (12) gerichtet ist, wobei die Welle (16) des Läufers direkt an dessen Läuferboden angesetzt ist.Peristaltic pump with pump hose arranged in the bottom of a pump housing with elastically deformable wall, which is inserted with a part-circularly bent section around a shaft of a rotor within the wall of the peristaltic pump and at a radial distance from it into the pump housing and its cross-section during the delivery process by at least a cross section of the pump tube pressing an abutment organ of the rotor is partially changed while reducing the internal volume,
characterized,
that the rotor (14) is bowl-shaped from a rotor base (13) and a rotor wall (15) and this is directed towards the bottom (38) of the pump housing (12), the shaft (16) of the rotor being attached directly to the rotor bottom. Schlauchpumpe nach Anspruch 1, dadurch gekennzeichnet, daß der Läuferboden (13) und die Welle (16) des Läufers (14) einstückig geformt sind.Peristaltic pump according to claim 1, characterized in that the rotor base (13) and the shaft (16) of the rotor (14) are formed in one piece. Schlauchpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das schüsselartige Pumpengehäuse (12) im Querschnitt einen an die Wandung (36) etwa rechtwinkelig angeformten Bodenabschnitt (38a) und einen davon in einem Neigungswinkel (w) läuferwärts geneigten Bodenabschnitt (38b) aufweist sowie diese Abschnitte einen Rinnenraum (40) des Pumpengehäuses begrenzen, in welchen die Läuferwand (15) eintaucht.Peristaltic pump according to claim 1 or 2, characterized in that the bowl-like pump housing (12) has in cross section a bottom section (38a) formed approximately at right angles to the wall (36) and a bottom section (38b) inclined towards the rotor at an angle of inclination (w) and these sections delimit a channel space (40) of the pump housing into which the rotor wall (15) is immersed. Schlauchpumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der radiale Abstand (i) der Wandung (36) des Pumpengehäuses (12) von der innerhalb dessen Rinnenraum (40) drehbaren Läuferwand (15) gleich oder geringer ist wie/als der Außendurchmesser (e) des Pumpschlauches (50).Peristaltic pump according to one of claims 1 to 3, characterized in that the radial distance (i) of the wall (36) of the pump housing (12) from the rotor wall (15) rotatable within the channel space (40) is equal to or less than that Outside diameter (e) of the pump tubing (50). Schlauchpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der geneigte Bodenabschnitt (38b) des Pumpengehäuses (12) mittels eines ringförmigen Bodenabschnitts (38c) an einen Lagerhals (18) angeformt ist, der die Welle (16) des Läufers (14) aufnimmt, wobei der Lagerhals (18) gegebenenfalls mit einer wenigstens im Dichtelement (34) aufnehmenden Ringrippe (19) axial dem ringförmigen Bodenabschnitt (38c) überragt.Peristaltic pump according to one of claims 1 to 4, characterized in that the inclined bottom section (38b) of the pump housing (12) is formed by means of an annular bottom section (38c) on a bearing neck (18) which defines the shaft (16) of the rotor (14 ), the bearing neck (18) optionally projecting with an annular rib (19) accommodating at least in the sealing element (34) axially protruding from the annular bottom portion (38c). Schlauchpumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß von der Läuferwand (15) ein Gleitschuh (48) mit einer radial nach außen gerichteten Gleitfläche (49) zum Pumpschlauch (50) hin abragt, wobei sich gegebenenfalls die Kragweite (q) des Gleitschuhs (48) von einem Maximum zu beiden Seiten der Gleitfläche (49) hin vermindert und/oder die Gleitfläche (49) in Draufsicht etwa die Kontur eines in seiner langen Achse geschnittenen halben Ovals anbietet.Peristaltic pump according to one of claims 1 to 5, characterized in that a sliding block (48) with a radially outward sliding surface (49) projects from the rotor wall (15) towards the pumping hose (50), the cantilever width (q) possibly of the sliding block (48) is reduced from a maximum to both sides of the sliding surface (49) and / or the sliding surface (49) offers approximately the contour of a half oval cut in its long axis in plan view. Schlauchpumpe nach wenigstens einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Gleitschuh (48) zwischen Gleitfläche (49) und Läufer (14) mit Durchtrittsöffnungen (47) für Gleit- oder Kühlmittel versehen ist, und/oder die Gleitfläche (49) entlang einer Wand des Gleitschuhs (48) ausgebildet ist sowie diese die Durchtrittsöffnungen (47) im Gleitschuh begrenzt.Peristaltic pump according to at least one of Claims 1 to 6, characterized in that the sliding shoe (48) between the sliding surface (49) and the rotor (14) is provided with through-openings (47) for lubricant or coolant, and / or the sliding surface (49) is formed along a wall of the sliding block (48) and this delimits the passage openings (47) in the sliding block. Schlauchpumpe nach wenigstens einem der Ansprüche 1 bis 7, gekennzeichnet durch ein Paar von Gleitschuhen (48) auf einem gemeinsamen Durchmesser des Läufers (14).Peristaltic pump according to at least one of claims 1 to 7, characterized by a pair of sliding shoes (48) on a common diameter of the rotor (14). Schlauchpumpe nach wenigstens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Läuferboden (13) mit zumindest einem Durchbruch (44) für Gleit- oder Kühlmittel versehen ist, und/oder dem Gleitschuh (48) wenigstens ein Durchbruch (44) im Läuferboden (13) benachbart ist.Peristaltic pump according to at least one of claims 1 to 8, characterized in that the rotor base (13) is provided with at least one opening (44) for lubricant or coolant, and / or the sliding block (48) has at least one opening (44) in the rotor base (13) is adjacent. Schlauchpumpe nach Anspruch 9, dadurch gekennzeichnet, daß dem Durchbruch (44) wenigstens eine vom Läuferboden (13) aufragende Förderschaufel (43) zugeordnet ist, die sich gegebenenfalls vom Maximum des Gleitschuhs (48) beidseits entlang dem Seitenrand des Durchbruches (44) im Läuferboden (13) erstreckt.Peristaltic pump according to claim 9, characterized in that the opening (44) is assigned at least one conveying scoop (43) which rises from the rotor base (13) and which extends from the maximum of the sliding block (48) on both sides along the side edge of the opening (44) in the rotor base (13) extends.
EP93107436A 1992-05-11 1993-05-07 Tube pump Expired - Lifetime EP0577946B1 (en)

Applications Claiming Priority (2)

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DE4214917 1992-05-11
DE4214917A DE4214917A1 (en) 1992-05-11 1992-05-11 Peristaltic pump

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EP0577946A2 true EP0577946A2 (en) 1994-01-12
EP0577946A3 EP0577946A3 (en) 1994-03-16
EP0577946B1 EP0577946B1 (en) 1998-02-11

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EP (1) EP0577946B1 (en)
DE (2) DE4214917A1 (en)

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CN107202009A (en) * 2016-03-18 2017-09-26 株式会社威尔科 Tube pump, rotation restricting unit, axis body and Axile connection structure
CN112610720A (en) * 2020-12-17 2021-04-06 中南大学 High-precision resistance-increasing pressure-regulating control reducing valve

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CN107202009A (en) * 2016-03-18 2017-09-26 株式会社威尔科 Tube pump, rotation restricting unit, axis body and Axile connection structure
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Also Published As

Publication number Publication date
EP0577946A3 (en) 1994-03-16
EP0577946B1 (en) 1998-02-11
US5375984A (en) 1994-12-27
DE59308132D1 (en) 1998-03-19
DE4214917A1 (en) 1993-11-18

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