EP0569874B1 - Hose pump - Google Patents
Hose pump Download PDFInfo
- Publication number
- EP0569874B1 EP0569874B1 EP93107434A EP93107434A EP0569874B1 EP 0569874 B1 EP0569874 B1 EP 0569874B1 EP 93107434 A EP93107434 A EP 93107434A EP 93107434 A EP93107434 A EP 93107434A EP 0569874 B1 EP0569874 B1 EP 0569874B1
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- EP
- European Patent Office
- Prior art keywords
- rotor
- hose
- bores
- pump according
- hose pump
- 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
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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
- F04B43/1276—Means for pushing the rollers against the tubular flexible member
Definitions
- the invention relates to a peristaltic pump according to the preamble of claim 1.
- Such a peristaltic pump is described in US Pat. No. 3,700,361 with a relatively narrow pump hose and a pair of pressure rollers, which creates a chamber section closed off by two pinch points in the hose interior.
- the pressure rollers roll on the fixed pump hose, which is supported on the abutment, and with them those pinch points migrate, as a result of which the liquid or the like present in the hose interior.
- Conveyed material 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 inlet causes suction force on the incoming material, which is then transported from the chamber section described above to the outlet end of the pump hose.
- 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.
- At least two pairs of two bearing eyes or bores each receiving the two ends of a roller axis of a pressure roller, are provided in the rotor on a common diameter, and these bearing eyes or bores are arranged on construction circles of different radii, the roller axis being interchangeable between the pairs and thus their radial distance from Wave is changeable.
- each pair of bores on a common diameter of the rotor beyond the shaft should be assigned a further pair of bores on a common construction circle.
- the length of the radii increases gradually in one direction - in particular by about 0.5 mm to 1.5 mm in each case - preferably against the direction of rotation of the rotor, an angle (as a distance measure for adjacent bores) w) from 20 ° to 30 °, preferably about 28 °, can be provided.
- the aligned pairs of bores are accommodated in two rotor plates of the rotor which are arranged at an axial distance from one another, each of which has a bore of the pairs of aligned bores.
- the rotor plates can advantageously be in one piece with a central web of the rotor receiving the shaft and preferably offer partially circular outer edges in the region of the bores, beyond which a part of the pressure roller cross section projects radially.
- Each of the rotor plates is provided with a plurality of bores lying side by side on a respective construction circle around the shaft, two bores of each rotor plate lying on a common construction circle, and moreover according to the invention on a common diameter.
- the radii of the construction circles are of different lengths, and the length of the radii increases in one direction - preferably by about 0.5 to 1.5 mm in each case - in stages, in particular against the direction of rotation of the rotor.
- roller axles of two pressure rollers are advantageously fixed by a common axle holder by a rigid strip of material with two wing ends, which is held in the center of the shaft axis of the pump shaft, for example by an end screw of this pump shaft, and which engages the roller axes with its two wing ends.
- axle holder is also attached to the roller axles by means of end screws, it is secured in only one direction. It is therefore of particular importance that the free ends of the axle holder are inserted as locking webs in the side locking grooves of the two roller axles; this allows both a radial and an axial fixation and particularly effectively prevents a different pressure roller arrangement and adjustment.
- the latching ends of the axle holder preferably engage with aligned latching edges in the latching grooves, and can therefore be inserted into both latching grooves from one side.
- the forehead screw holding it in the rotor center - already mentioned - creates a kind of three-point fixation and prevents incorrect assembly of the axle holder.
- the - in the selected version four - pressure roller positions on the runner are marked with embossed numbers or letters.
- Medium has in a bowl-like pump housing 12 - an inner diameter d of approximately 320 mm and an inner height h of approximately 100 mm - with a housing wall 16 projecting from a housing base 14 on a pump shaft 18 a rotor 20.
- the housing wall 16 ends in an outwardly projecting flange 22, onto which a pump cover 26 is screwed with the interposition of a seal 24.
- this includes a pump chamber 28 which can hold lubricants or coolants in wet-running machines.
- Fig. 1 shows that a pump hose 30 is arranged approximately U-shaped in plan view on the inner surface of the housing wall 16, the free hose ends of which protrude into two wall sockets 32 of the housing wall 16, which are each closed by means of screwed-on stuffing box gland 34.
- Each stuffing box gland 34 is a fixed pump pipe socket 36 - as an inlet or Spout for a medium to be conveyed - penetrated, which is inserted into the hose interior 31 at the end of the hose.
- the mutually parallel wall connections 32 project approximately tangentially from the housing wall 16 and, for reasons of clarity, accommodate packing rings, gland base rings and the like, which are not shown.
- the disk-like rotor 20 has an I-like cross section, the pump shaft 18 being seated in a central bearing bore 40 of the rotor 20 in its central web 38.
- This bearing bore 40 is spanned by a wing-like strip as an axle holder 42, on the outside of which the head of an end screw 44 of the pump shaft 18 is supported.
- the usual screw locks are not specifically mentioned here, that of the forehead screw 44 is designated 45.
- central web 38 protrude radially at a distance i from one another two parallel rotor plates 46, 47 which are integral with it and which, according to FIG. 1, each have two oval regions connected by a central web section, which have two partially circular outer edges on both sides of a line of symmetry G. 48 and delimit two opposing indentations 50 in the web area.
- Each of the oval areas is equipped with — here four — bores 52 (numbered “0” to “3” in FIG. 1) with a diameter e of approximately 25 mm on different construction circles K1 to K4; their radii r1 to r4 are each stepped by approximately 0.5, radius r1 here measuring approximately 80 mm.
- the equally large distance angles w between radial lines of adjacent bores 52 are between 26 and 28 °.
- the two bores 52 with the number “1” receive roller axes 54 which are parallel to the pump shaft 18 and which are each surrounded by a bearing bush 56 of a pressure roller 58 between the rotor plates 46, 47.
- These show an H-shaped profile cross section on both sides of the bearing bush 56 in FIG. 2.
- the circumference 60 of the two pressure rollers 58 lying on a common diameter D rolls off laterally when the pump shaft 18 rotates on the pump hose 30, which is supported against the inner surface of the housing wall 16, and squeezes its cross section so that the volume of the Hose interior 31 approaches the value zero until the hose interior 31 is closed at the pinch point.
- the chamber section thus created transports the medium to be conveyed further in accordance with the rotor rotation.
- the two roller axes 54 are mounted on both ends directly in the rotor 20, their bearing bores 52 are at the same distance from the axis A of the pump shaft 18 in the rotor plates 46, 47, and - as mentioned - on a common diameter D.
- the radial and axial fixation of the Roller axles 54 take place through the wing-like axle holder 42, the latching ends 43 of which engage in radial circumferential slots or latching grooves 62 of the roller axles 54. As shown in FIG.
- this axle holder 42 is mounted on the screw 44 on the one hand and in the locking grooves 62 on the other hand, that is to say at three points, and its locking edges 64 to be inserted into the locking grooves 62 and are aligned with one another lie on a common side of the axle holder 42 .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Reciprocating Pumps (AREA)
Description
Die Erfindung betrifft eine Schlauchpumpe nach dem Oberbegriff des Anspruches 1.The invention relates to a peristaltic pump according to the preamble of claim 1.
Eine derartige peristaltische Pumpe beschreibt die US-A-3 700 361 mit einem verhältnismäßig engen Pumpschlauch und einem Druckrollenpaar, das im Schlauchinnenraum einen durch zwei Quetschstellen abgeschlossenen Kammerabschnitt erzeugt. Beim Drehen des Läufers wälzen sich die Druckrollen an dem sich am Widerlager abstützenden festliegenden Pumpschlauch ab, und mit ihnen wandern jene Quetschstellen, wodurch die im Schlauchinnenraum vorhandene Flüssigkeit od.dgl. Fördergut vom Schlaucheingang zum Austrittsende des Pumpschlauches gefördert wird; die dem Schlaucheingang nahe Quetschstelle bewirkt dank der Rückstellkraft der Schlauchwandung eine Saugkraft auf das eintretende Fördergut, welches dann von dem oben beschriebenen Kammerabschnitt zum Austrittsende des Pumpschlauches transportiert wird.Such a peristaltic pump is described in US Pat. No. 3,700,361 with a relatively narrow pump hose and a pair of 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 on the fixed pump hose, which is supported on the abutment, and with them those pinch points migrate, as a result of which the liquid or the like present in the hose interior. Conveyed material 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 inlet causes suction force on the incoming material, which is then transported from the chamber section described above to the outlet end of the pump hose.
Beim Stande der Technik ist durch Spiel zwischen Druckrollenträger und Läufer eine Schrägstellung der Druckrollenachse bzw. Druckrolle möglich mit der Folge erhöhter Belastung und Minderung der Lebensdauer des Pumpschlauches, hohen Fertigungsaufwandes und zunehmender Herstellungskosten. Insbesondere bei unsauberen oder aggressiven Medien kann das Platzen eines Pumpschlauches zu einer höchst unerwünschten Kontaminierung des Pumpenumfeldes führen.In the prior art, an inclination of the pressure roller axis or pressure roller is possible due to the play between the pressure roller carrier and the runner, with the result of increased stress and reduction in the service life of the pump hose, high manufacturing costs and increasing manufacturing costs. In the case of dirty or aggressive media in particular, the bursting of a pump hose can lead to highly undesirable contamination of the pump environment.
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 zeigen günstige Ausgestaltungen auf.The teaching of the independent claim leads to solving this problem; the subclaims show favorable configurations.
Erfindungsgemäß sind im Läufer wenigstens zwei Paare von jeweils zwei die beiden Enden einer Rollenachse einer Druckrolle aufnehmenden Lageraugen oder Bohrungen auf einem gemeinsamen Durchmesser vorgesehen sowie diese Lageraugen oder Bohrungen auf Konstruktionskreisen unterschiedlicher Radien angeordnet, wobei die Rollenachse zwischen den Paaren austauschbar und damit ihr radialer Abstand zur Welle veränderbar ist.According to the invention, at least two pairs of two bearing eyes or bores, each receiving the two ends of a roller axis of a pressure roller, are provided in the rotor on a common diameter, and these bearing eyes or bores are arranged on construction circles of different radii, the roller axis being interchangeable between the pairs and thus their radial distance from Wave is changeable.
Zudem soll jedem Paar von Bohrungen auf einem gemeinsamen Durchmesser des Läufers jenseits der Welle ein weiteres Paar von Bohrungen auf einem gemeinsamen Konstruktionskreis zugeordnet sein.In addition, each pair of bores on a common diameter of the rotor beyond the shaft should be assigned a further pair of bores on a common construction circle.
Dank dieser Maßgaben wird die Möglichkeit unerwünschter unterschiedlicher Druckrollenanstellung ausgeschlossen; letztere ist leicht durchführbar und einfach zu kontrollieren. Ungleichmäßige Pumpleistung je Druckrollenhub werden verhindert, auch wird eine Begrenzung der Pulsation erreicht. Aufgabengemäß wird die Reduzierung der Lebensdauer des Pumpschlauches wegen Schiefstellung der Druckrollen unterbunden, Fertigungsaufwand und Herstellungskosten vermindern sich erheblich.Thanks to these provisions, the possibility of undesired different pressure roller adjustment is excluded; the latter is easy to carry out and easy to control. Uneven pump output per pressure roller stroke is prevented, and pulsation is also limited. According to the task, the reduction in the service life of the pump tubing due to misalignment of the pressure rollers is prevented, manufacturing effort and manufacturing costs are reduced considerably.
Als günstig hat es sich erwiesen, daß die Länge der Radien in eine Richtung stufenweise zunimmt -- insbesondere um jeweils etwa 0,5 mm bis 1,5 mm -- bevorzugt gegen die Drehrichtung des Läufers, wobei als Abstandsmaß für benachbarte Bohrungen ein Winkel (w) von 20° bis 30°, bevorzugt etwa 28°, vorgesehen werden kann.It has proven to be advantageous that the length of the radii increases gradually in one direction - in particular by about 0.5 mm to 1.5 mm in each case - preferably against the direction of rotation of the rotor, an angle (as a distance measure for adjacent bores) w) from 20 ° to 30 °, preferably about 28 °, can be provided.
Nach einem anderen Merkmal der Erfindung sind die fluchtenden Paare von Bohrungen in zwei in axialem Abstand zueinander angeordneten Läuferplatten des Läufers untergebracht, deren jede jeweils eine Bohrung der Paare fluchtender Bohrungen aufweist. Zudem können die Läuferplatten vorteilhafterweise mit einem die Welle aufnehmenden Mittelsteg des Läufers einstückig sein und bevorzugt im Bereich der Bohrungen teilkreisförmige Außenkanten anbieten, über welche ein Teil des Druckrollenquerschnittes radial hinausragt.According to another feature of the invention, the aligned pairs of bores are accommodated in two rotor plates of the rotor which are arranged at an axial distance from one another, each of which has a bore of the pairs of aligned bores. In addition, the rotor plates can advantageously be in one piece with a central web of the rotor receiving the shaft and preferably offer partially circular outer edges in the region of the bores, beyond which a part of the pressure roller cross section projects radially.
Jede der Läuferplatten ist mit mehreren nebeneinander auf jeweils einen Konstruktionskreis um die Welle liegenden Bohrungen versehen, wobei zwei Bohrungen jeder Läuferplatte auf einem gemeinsamen Konstruktionskreis liegen, und zudem erfindungsgemäß auf einem gemeinsamen Durchmesser.Each of the rotor plates is provided with a plurality of bores lying side by side on a respective construction circle around the shaft, two bores of each rotor plate lying on a common construction circle, and moreover according to the invention on a common diameter.
Die Radien der Konstruktionskreise sind von unterschiedlichen Längen, auch nimmt die Länge der Radien in einer Richtung -- bevorzugt um jeweils etwa 0,5 bis 1,5 mm -- stufenweise zu, insbesondere gegen die Drehrichtung des Läufers.The radii of the construction circles are of different lengths, and the length of the radii increases in one direction - preferably by about 0.5 to 1.5 mm in each case - in stages, in particular against the direction of rotation of the rotor.
Diese Maßnahme, die Rollenachsen-Lagerungen radial zu versetzen erlaubt auf einfache Weise eine unterschiedliche Druckrollenanstellung. Als Abstandsmaß der nahe den Außenkanten vorgesehenen Bohrungen voneinander kann der Winkel zwischen ihren Abstandsradien zur Wellenachse herangezogen werden, der zwischen 20° und 30° liegt, bevorzugt bei etwa 28°. Gemäß einem anderen Merkmal der Erfindung sind die Rollenachsen zweier Druckrollen durch einen gemeinsamen Achshalter fixiert, vorteilhafterweise durch einen starren Werkstoffstreifen mit zwei Flügelenden, der mittig in der Wellenachse der Pumpenwelle, beispielsweise durch eine Stirnschraube dieser Pumpenwelle, gehalten ist und mit seinen beiden Flügelenden an den Rollenachsen angreift. Wird der Achshalter an den Rollenachsen ebenfalls durch Stirnschrauben befestigt, ergibt sich eine Sicherung in nur einer Richtung. Deshalb ist von besonderer Bedeutung, daß die freien Enden des Achshalters als Raststege in seitliche Rastnuten der beiden Rollenachsen eingeschoben sind; dies gestattet sowohl eine radiale als auch eine axiale Festlegung und verhindert besonders effektiv eine unterschiedliche Druckrollenanordnung und -anstellung.This measure of radially displacing the roller axis bearings allows a different pressure roller adjustment in a simple manner. The angle between their radii of distance to the shaft axis, which is between 20 ° and 30 °, preferably around 28 °, can be used as the distance dimension of the bores provided near the outer edges. According to another feature of the invention, the roller axles of two pressure rollers are advantageously fixed by a common axle holder by a rigid strip of material with two wing ends, which is held in the center of the shaft axis of the pump shaft, for example by an end screw of this pump shaft, and which engages the roller axes with its two wing ends. If the axle holder is also attached to the roller axles by means of end screws, it is secured in only one direction. It is therefore of particular importance that the free ends of the axle holder are inserted as locking webs in the side locking grooves of the two roller axles; this allows both a radial and an axial fixation and particularly effectively prevents a different pressure roller arrangement and adjustment.
Bevorzugt greifen die Rastenden des Achshalters mit fluchtenden Rastkanten in die Rastnuten ein, können also von einer Seite in beide Rastnuten eingeführt werden. Die ihn im Läuferzentrum zusätzlich haltende -- bereits genannte --Stirnschraube läßt eine Art Dreipunktfixierung entstehen und verhindert eine Falschmontage des Achshalters.The latching ends of the axle holder preferably engage with aligned latching edges in the latching grooves, and can therefore be inserted into both latching grooves from one side. The forehead screw holding it in the rotor center - already mentioned - creates a kind of three-point fixation and prevents incorrect assembly of the axle holder.
Der besseren Handhabung wegen sind die -- in der gewählten Ausführung vier -- Druckrollenanstellungen auf dem Läufer mit eingeschlagenen Ziffern oder Buchstaben gekennzeichnet.For better handling, the - in the selected version four - pressure roller positions on the runner are marked with embossed numbers or letters.
Durch die direkte Lagerung der Druckrolle bzw. der Druckrollenachse im Läufer wird eine Schiefstellung der Druckrollen ausgeschlossen und dadurch eine Reduzierung der Lebensdauer des Pumpschlauches verhindert.Due to the direct mounting of the pressure roller or the pressure roller axis in the runner, misalignment of the pressure rollers is excluded, thereby preventing a reduction in the service life of the pump hose.
Erkennbar wird auch eine Verminderung der Anzahl der Bauteile sowie deren gestalterische und herstellungstechnische Vereinfachung erreicht, was zu einer Senkung des Fertigungsaufwandes und der Herstellkosten führt.A recognizable reduction in the number of components and their simplification in terms of design and production technology is also achieved, which leads to a reduction in manufacturing expenditure and manufacturing costs.
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;
- Fig. 2:
- den Schnitt durch Fig. 1 nach deren Linie II-II;
- Fig. 3:
- ein vergrößertes Detail der Fig. 2 in Schrägsicht.
- Fig. 1:
- the top view of a partially sectioned pump;
- Fig. 2:
- the section through Figure 1 along the line II-II.
- Fig. 3:
- an enlarged detail of FIG. 2 in an oblique view.
Eine seitlich an einem in der Zeichnung nur angedeuteten Antrieb festgelegte Schlauchpumpe 10 zum Fördern von Flüssigkeit, Granulat od.dgl. Medium weist in einem schüsselartigen Pumpengehäuse 12 -- eines Innendurchmessers d von etwa 320 mm und einer Innenhöhe h von etwa 100 mm -- mit von einem Gehäuseboden 14 aufragender Gehäusewand 16 an einer Pumpenwelle 18 einen Läufer 20 auf. Die Gehäusewand 16 endet in einem nach außen abkragenden Flansch 22, auf den unter Zwischenschaltung einer Dichtung 24 ein Pumpendeckel 26 aufgeschraubt ist. Dieser schließt mit dem Pumpengehäuse 12 einen Pumpenraum 28 ein, der bei Naßläufern Gleit- oder Kühlmittel aufnehmen kann.A
Insbesondere Fig. 1 läßt erkennen, daß an der Innenfläche der Gehäusewand 16 ein Pumpschlauch 30 in Draufsicht etwa U-förmig angeordnet ist, dessen freie Schlauchenden in zwei Wandstutzen 32 der Gehäusewand 16 einragen, die mittels jeweils einer angeschraubten Stopfbuchsenbrille 34 verschlossen sind. Jede Stopfbuchsenbrille 34 wird von einem festliegenden Pumpenrohrstutzen 36 -- als Einlauf bzw. Auslauf für ein zu förderndes Medium -- durchsetzt, der am Schlauchende in den Schlauchinnenraum 31 eingesetzt ist.In particular, Fig. 1 shows that a
Die zueinander parallelen Wandstutzen 32 ragen etwa tangential von der Gehäusewand 16 ab und nehmen aus Gründen der Übersicht nicht dargestellte Packungsringe, Stopfbuchsgrundringe und dgl. auf.The mutually
Der scheibenartige Läufer 20 ist von I-artigem Querschnitt, wobei in dessen Mittelsteg 38 die Pumpenwelle 18 in einer zentrischen Lagerbohrung 40 des Läufers 20 sitzt. Diese Lagerbohrung 40 wird von einem flügelähnlichen Streifen als Achshalter 42 überspannt, an dessen Außenseite sich der Kopf einer Stirnschraube 44 der Pumpenwelle 18 abstützt. Die üblichen Schraubensicherungen werden hier nicht besonders erwähnt, die der Stirnschraube 44 ist mit 45 bezeichnet.The disk-
Von jenem Mittelsteg 38 ragen radial in einem Abstand i voneinander zwei mit ihm einstückige und parallele Läuferplatten 46, 47 ab, die gemäß Fig. 1 in Draufsicht jeweils zwei durch einen mittigen Stegabschnitt verbundene etwa ovale Bereiche aufweisen, die beidseits einer Symmetriegeraden G zwei teilkreisförmige Außenkanten 48 anbieten und im Stegbereich zwei einander gegenüberliegende Einbuchtungen 50 begrenzen.From that
Jeder der ovalen Bereiche ist mit -- hier vier -- Bohrungen 52 (in Fig. 1 nummeriert mit "0" bis "3") eines Durchmessers e von etwa 25 mm auf unterschiedlichen Konstruktionskreisen K1 bis K4 ausgestattet; deren Radien r1 bis r4 sind jeweils um etwa 0,5 abgestuft, wobei Radius r1 hier etwa 80 mm mißt. Die gleichgroßen Abstandswinkel w zwischen Radiallinien benachbarter Bohrungen 52 betragen zwischen 26 und 28°.Each of the oval areas is equipped with — here four — bores 52 (numbered “0” to “3” in FIG. 1) with a diameter e of approximately 25 mm on different construction circles K1 to K4; their radii r1 to r4 are each stepped by approximately 0.5, radius r1 here measuring approximately 80 mm. The equally large distance angles w between radial lines of
Die beiden Bohrungen 52 mit der Bezifferung "1" nehmen im dargestellten Beispiel zur Pumpenwelle 18 parallele Rollenachsen 54 auf, die zwischen den Läuferplatten 46, 47 jeweils von einer Lagerbuchse 56 einer Druckrolle 58 umgeben sind. Diese lassen beidseits der Lagerbuchse 56 in Fig. 2 jeweils einen H-förmigen Profilquerschnitt erkennen.In the example shown, the two
Der Umfang 60 der auf einem gemeinsamen Durchmesser D liegenden beiden Druckrollen 58 wälzt sich beim Drehen der Pumpenwelle 18 auf dem sich -- gegen die Innenfläche der Gehäusewand 16 stützenden -- Pumpenschlauch 30 seitlich ab und quetscht dessen Querschnitt so zusammen, daß sich das Volumen des Schlauchinnenraumes 31 dem Wert null nähert, bis ein Verschließen des Schlauchinnenraumes 31 an der Quetschstelle erreicht ist. Der so entstandene Kammerabschnitt transportiert das zu fördernde Medium entsprechend der Läuferdrehung weiter.The
Die beiden Rollenachsen 54 sind beidends unmittelbar im Läufer 20 gelagert, ihre Lagerbohrungen 52 liegen im gleichen Abstand zur Achse A der Pumpenwelle 18 in den Läuferplatten 46, 47, zudem -- wie gesagt -- auf gemeinsamem Durchmesser D. Die radiale und axiale Fixierung der Rollenachsen 54 erfolgt durch den flügelartigen Achshalter 42, dessen Rastenden 43 in radiale Umfangsschlitze oder Rastnuten 62 der Rollenachsen 54 eingreifen. Dieser Achshalter 42 ist, wie Fig. 1 verdeutlicht, an der Schraube 44 einerseits und in den Rastnuten 62 anderseits, also an drei Punkten, gelagert, und seine in die Rastnuten 62 einzusetzenden, miteinander fluchtenden Rastkanten 64 liegen auf einer gemeinsamen Seite des Achshalters 42.The two
Claims (12)
- Hose pump comprising a pump hose (30) with an elastically deformable hose wall arranged in a pump housing (12) and having connection ends accessible from the exterior, which is inserted into the pump housing (12) via an arcuate region placed around a shaft (18) of a rotor (20) of the hose pump (10) and at a radial distance from the latter, and the cross section of which can be varied by pressure rollers (58) projecting radially from the rotor (20) which press the pump hose (30) at least in its curved region against a correspondingly curved fixed abutment, thereby reducing the inner volume thereof, the rotor (20) having bores (52) for the roller spindle (54) of the pressure rollers (58) and said roller spindle being supported in said rotor in an aligned pair of bores (52) parallel to the shaft (18) of the rotor (20), characterised in that at least two pairs of two bearing eyes or bores (52) each receiving both ends of a roller spindle (54) of a pressure roller (58) are provided on a common diameter (D) and these bearing eyes or bores are arranged on construction circles (K1 to K4) of different radii (r1 to r4), the roller spindle (54) being exchangeable between the pairs and its radial distance from the shaft (18) therefore being variable.
- Hose pump according to claim 1, characterised in that a further pair of bores on a common construction circle is associated with each pair of bores (52) on a common diameter (D) of the rotor (20) on the other side of the shaft (18).
- Hose pump according to claim 1 or claim 2, characterised in that the length of the radii (r1 to r4) increases gradually in one direction, in particular by approximately 0.5 mm to 1.5 mm, preferably in the opposite direction to the direction of rotation of the rotor (20).
- Hose pump according to one of claims 1 to 3, characterised by an angle (w) of 20° to 30°, preferably approximately 28°, as the spacing between adjacent bores (52).
- Hose pump according to one of claims 1 to 4, characterised by two rotor plates (46, 47) of the rotor (20) arranged at an axial distance (i) from one another, each of which has one bore (52) of the pair of aligned bores (52), the rotor plates (46, 47) optionally being made in one piece with a centre web (38) of the rotor (20) receiving the shaft (18) in a bearing bore (40).
- Hose pump according to at least one of claims 1 to 5, characterised in that the rotor plates (46, 47) have arcuate outer edges (48) in the region of the bores (52) beyond which part of the pressure roller cross section projects.
- Hose pump according to at least one of claims 1 to 6, characterised in that the spindle axis (54) is surrounded by a bearing bush (56) between the two rotor plates (46, 47).
- Hose pump according to at least one of claims 1 to 7, characterised in that the roller spindles (54) of two pressure rollers (58) are fixed by a common spindle holder (42).
- Hose pump according to claim 8, characterised in that a rigid strip of material is provided as the spindle holder (42), this being held in the shaft axis (A) of the pump shaft (18) and gripping the two roller spindles (54) via both its ends (43).
- Hose pump according to claim 8 or claim 9, characterised in that the free ends (43) of the spindle holder (42) are wing-shaped and are inserted as locking webs into lateral locking grooves (62) in the two roller spindles (54).
- Hose pump according to claim 9 or claim 10, characterised in that the locking ends (43) of the spindle holder (42) engage via aligned locking edges (64) in the two locking grooves (62) situated along a common radius (r₁ to r₄).
- Hose pump according to one of claims 9 to 11, characterised in that the spindle holder (42) is supported, on the one hand, in the region of the shaft axis (A) and, on the other hand, in the locking grooves (62), i.e. at three points.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4214914A DE4214914A1 (en) | 1992-05-11 | 1992-05-11 | Peristaltic pump |
| DE4214914 | 1992-05-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0569874A1 EP0569874A1 (en) | 1993-11-18 |
| EP0569874B1 true EP0569874B1 (en) | 1995-07-26 |
Family
ID=6458267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93107434A Expired - Lifetime EP0569874B1 (en) | 1992-05-11 | 1993-05-07 | Hose pump |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5372486A (en) |
| EP (1) | EP0569874B1 (en) |
| DE (2) | DE4214914A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2122600C (en) * | 1992-09-02 | 1998-10-13 | Valery Viktorovich Skobelev | A pump for biological fluids |
| US5851291A (en) * | 1996-07-31 | 1998-12-22 | Poterala; Robert J. | Chemical foaming machine and mixing apparatus |
| US7223079B2 (en) * | 2003-07-28 | 2007-05-29 | The Coca-Cola Company | Quick loading peristaltic pump |
| DE102012222358A1 (en) * | 2012-12-05 | 2014-06-05 | Mahle International Gmbh | Electric fluid pump |
| CN103498784A (en) * | 2013-09-18 | 2014-01-08 | 宁波天益医疗器械有限公司 | Peristaltic pump for ozone immune adjustment equipment |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US537049A (en) * | 1895-04-09 | Surgical pump | ||
| FR597719A (en) * | 1924-12-24 | 1925-11-27 | ||
| US2123781A (en) * | 1936-06-16 | 1938-07-12 | Charles J Huber | Pump |
| FR1000300A (en) * | 1949-11-24 | 1952-02-11 | Blood transfusion device | |
| US3384080A (en) * | 1964-10-16 | 1968-05-21 | Us Catheter & Instr Corp | Portable spring powered infusion device having escapement means controlling speed ofinfusion |
| CH453080A (en) * | 1965-12-02 | 1968-05-31 | Binder Jean Charles | Pump |
| US3386382A (en) * | 1966-08-15 | 1968-06-04 | Possis Machine Corp | Fluid material dispensing apparatus |
| US3565286A (en) * | 1968-10-18 | 1971-02-23 | Cryogenic Technology Inc | Liquid programming and pumping apparatus |
| US3700361A (en) * | 1971-07-08 | 1972-10-24 | Sarns Inc | Peristaltic pump construction |
| US4218197A (en) * | 1978-07-06 | 1980-08-19 | Beckman Instruments, Inc. | Combined peristaltic pump and valve flow controller |
| EP0094948A1 (en) * | 1981-11-25 | 1983-11-30 | HACKMAN, Charles Henry | Rotary peristaltic pump |
| FR2519381B1 (en) * | 1981-12-31 | 1986-09-26 | Delasco Sa | PERISTALTIC PUMP |
| US4432707A (en) * | 1982-06-21 | 1984-02-21 | Anko Motors, Inc. | Roller assembly for peristaltic pump |
| IT8323631V0 (en) * | 1983-11-22 | 1983-11-22 | Bellco Spa | PERISTALTIC PUMP FOR EXTRACORPOREAL BLOOD CIRCULATION. |
-
1992
- 1992-05-11 DE DE4214914A patent/DE4214914A1/en not_active Withdrawn
-
1993
- 1993-05-07 DE DE59300397T patent/DE59300397D1/en not_active Expired - Lifetime
- 1993-05-07 EP EP93107434A patent/EP0569874B1/en not_active Expired - Lifetime
- 1993-05-10 US US08/059,707 patent/US5372486A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE4214914A1 (en) | 1993-11-18 |
| EP0569874A1 (en) | 1993-11-18 |
| DE59300397D1 (en) | 1995-08-31 |
| US5372486A (en) | 1994-12-13 |
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