EP0979945A2 - Magnetic coupling system and use of it for a gear pump - Google Patents

Magnetic coupling system and use of it for a gear pump Download PDF

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Publication number
EP0979945A2
EP0979945A2 EP99122988A EP99122988A EP0979945A2 EP 0979945 A2 EP0979945 A2 EP 0979945A2 EP 99122988 A EP99122988 A EP 99122988A EP 99122988 A EP99122988 A EP 99122988A EP 0979945 A2 EP0979945 A2 EP 0979945A2
Authority
EP
European Patent Office
Prior art keywords
shaft
drive
rotor
drive unit
magnetic coupling
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
EP99122988A
Other languages
German (de)
French (fr)
Other versions
EP0979945B1 (en
EP0979945A3 (en
EP0979945B8 (en
Inventor
Martin Schaich
Felix Schnueriger
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.)
Maag Pump Systems AG
Original Assignee
Maag Pump Systems AG
Maag Pump Systems Textron AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maag Pump Systems AG, Maag Pump Systems Textron AG filed Critical Maag Pump Systems AG
Priority to DE59912176T priority Critical patent/DE59912176D1/en
Priority to EP99122988A priority patent/EP0979945B8/en
Publication of EP0979945A2 publication Critical patent/EP0979945A2/en
Publication of EP0979945A3 publication Critical patent/EP0979945A3/en
Priority to US09/643,736 priority patent/US6518684B1/en
Priority to JP2000349653A priority patent/JP2001187926A/en
Publication of EP0979945B1 publication Critical patent/EP0979945B1/en
Application granted granted Critical
Publication of EP0979945B8 publication Critical patent/EP0979945B8/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0069—Magnetic couplings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts

Definitions

  • the present invention relates to a device according to the preamble of claim 1 and a use the device.
  • Magnetic clutches are used for torque transmission between not touching waves, i.e. one to be sealed Rotary union, as for example for the from the Housing out with a gear pump Drive shaft is necessary with a gear pump with magnetic coupling not required.
  • Using magnetic couplings driven pumps only have statically acting Seals on, which is why they are hermetically sealed apply and therefore especially for extreme environmentally hazardous or toxic fluids are suitable.
  • Known magnetic couplings consist of a bell-like External rotor, the single- or double-walled containment shell and the Inner rotor.
  • the outer rotor usually sits on one Motor shaft or a transmission output shaft and the Inner rotor is located on the out of the pump housing led out drive shaft of the gear pump.
  • the Torque is transmitted by magnets, which are on the inner surface of the outer rotor and on the Outer surface of the inner rotor.
  • Magnetic clutches this known type are because of the mentioned Application benefits more and more often and preferably also used for ever larger services to be transferred.
  • the present invention is therefore based on the object based on a device with a magnetic coupling indicate which of the above disadvantages do not having.
  • the invention has the following advantages: By the shaft driven by the drive unit with the drive-side rotor is articulated and by the Axis of the drive-side rotor via fixing elements, which are preferably designed as roller bearings, radially is fixed, the axes of the driven shaft and that of the drive-side rotor does not coincide. Rather, these may be misaligned, without the function of the overall system being impaired.
  • Another embodiment variant of the invention in which the storage locations, i.e. the rolling bearings, radial to the containment shell the magnetic clutch are arranged, also points the advantage that when assembling the magnetic coupling whose outer rotor, guided by the fixing elements, over the can can be pushed without a Misjudgment is possible.
  • This embodiment of the invention also has the advantage that the outer rotor bearing closer to the containment shell and thus to the place where a precise positioning, especially in the radial direction, is crucial.
  • gear pump 1 shows a gear pump 1, a magnetic coupling 2 and a universal joint 14 is shown, wherein to drive the Gear pump 1 is a drive unit (not in Fig. 1 shown) is connected to the universal joint 14.
  • the gear pump 1 consists essentially of a Pump housing 21, consisting of two intermeshing gears 3 and shaft bearing 6, in which the gears 3 supporting Shafts 4 are stored.
  • One of the waves 4 is from the Pump housing 21 led out for driving the pump.
  • An outer rotor 12, which also on its inner surface is equipped with magnets 19, is radial to the inner rotor 17 arranged, between the inner and the outer
  • a so-called containment shell 16 is provided for the rotor 17 or 12 that enables a complete seal.
  • On the drive side i.e.
  • the shaft section 11 is further over a Universal joint 14 with a drive shaft 13, i.e. preferably first with an inner part of a Drive shaft, which inner part over a second Universal joint (not shown in Fig. 1) with the actual drive shaft of a drive unit (in FIG. 1 not shown) connected.
  • the magnetic coupling 2 thus forms with respect to the radial one Mobility one unit with the gear pump 1 or with whose housing 21, which advantageously achieved is that the drive shaft 7 of the gear pump 1 with the Drive axis 13 of the drive unit is not exact must coincide.
  • At least one of the drive shaft sections i.e. the Drive shaft section in front of the first universal joint 14 and / or between the two universal joints and / or after the second universal joint, is telescopic and can be extended or shortened as required.
  • the fixing element 8 is detachable Fasteners 15, preferably made of screws exist, attached to the pump housing 21.
  • the fixing element 8 tubular and closes the magnetic coupling 2 to the outside from, ventilation holes 9 are provided.
  • roller bearings 10 being radial to the containment shell 16 are arranged. This is the storage of the outer rotor 12 closer to the containment shell 16 and thus to the Place where precise positioning is critical is.
  • Fig. 2 shows essentially the magnetic coupling 2. From the Gear pump 1 are only individual parts, namely that Pump housing 21 and cutouts of the shaft bushing Drive shaft 7 shown.
  • roller bearings 10 In addition to the mentioned advantage regarding an ideal Force absorption in radially arranged roller bearings 10 has the further embodiment also has the advantage that assembly can be carried out in a simple manner. So the outer rotor 12 becomes simple at the end of the assembly pushed onto the can 16 without touching it is because the roller bearings 10 ensure that the magnets 19 of the outer rotor 12 and the containment shell 16 continuously are spaced.
  • FIG. 3 in a schematic representation, three shaft sections 31, 32 and 33 of the drive shaft shown, the first shaft portion 31 with the second shaft section 32 via a first flexible Coupling 34 and the second shaft section 32 with the third shaft section 33 via a second flexible Coupling 35 are connected.
  • the shaft section 33 corresponds to the rigid, out of a drive unit 30 guided drive shaft.
  • the outer rotor 12 FIGGS. 1 and 2) of the magnetic coupling 2 (FIG. 1 and 2) connected to the first shaft section 31.
  • the Flexible couplings 34 and 35 are in one of those discussed Form realized.
  • the second is Shaft section 32 formed telescopically.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

The gear pump device has a magnetic coupling (2) for contactless torque transmission from a first shaft (13) coupled to a drive unit to the pump shaft (7) in a casing (21). One of the shafts has an inner rotor (17) and the other has an outer rotor (12) with a magnet (19). The shaft driven by the drive unit is pivoted to the rotor on the drive side. The axis of this rotor can be fixed radially by fixing element (8) able to be connected to the casing.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung nach dem Oberbegriff des Patentanspruchs 1 sowie eine Verwendung der Vorrichtung.The present invention relates to a device according to the preamble of claim 1 and a use the device.

Magnetkupplungen dienen der Drehmomentübertragung zwischen sich nicht berührenden Wellen, d.h. eine abzudichtende Drehdurchführung, wie sie beispielsweise für die aus dem Gehäuse bei einer Zahnradpumpe herausgeführten Antriebswelle notwendig ist, wird bei einer Zahnradpumpe mit Magnetkupplung nicht benötigt. Mittels Magnetkupplungen angetriebene Pumpen weisen lediglich statisch wirkende Dichtungen auf, weshalb sie als hermetisch geschlossen gelten und demnach insbesondere für extrem umweltgefährdende bzw. toxische Fördermedien geeignet sind.Magnetic clutches are used for torque transmission between not touching waves, i.e. one to be sealed Rotary union, as for example for the from the Housing out with a gear pump Drive shaft is necessary with a gear pump with magnetic coupling not required. Using magnetic couplings driven pumps only have statically acting Seals on, which is why they are hermetically sealed apply and therefore especially for extreme environmentally hazardous or toxic fluids are suitable.

Bekannte Magnetkupplungen bestehen aus einem glockenartigen Aussenrotor, dem ein- oder doppelwandigen Spalttopf und dem Innenrotor. Der Aussenrotor sitzt gewöhnlich auf einer Motorwelle bzw. einer Getriebeausgangswelle und der Innenrotor befindet sich auf der aus dem Pumpengehäuse herausgeführten Antriebswelle der Zahnradpumpe. Die Drehmomentübertragung erfolgt durch Magnete, welche sich auf der Innenoberfläche des Aussenrotors sowie auf der Aussenoberfläche des Innenrotors befinden. Magnetkupplungen dieser bekannten Bauart werden wegen den erwähnten Anwendungsvorteilen immer häufiger und vorzugsweise auch für immer grössere zu übertragende Leistungen eingesetzt.Known magnetic couplings consist of a bell-like External rotor, the single- or double-walled containment shell and the Inner rotor. The outer rotor usually sits on one Motor shaft or a transmission output shaft and the Inner rotor is located on the out of the pump housing led out drive shaft of the gear pump. The Torque is transmitted by magnets, which are on the inner surface of the outer rotor and on the Outer surface of the inner rotor. Magnetic clutches this known type are because of the mentioned Application benefits more and more often and preferably also used for ever larger services to be transferred.

Nachteilig bei dieser bekannten Ausführungsform sind die hohen Anforderungen an die Position der miteinander zu verbindenden Komponenten: So sind sowohl die Antriebseinheit als auch die Zahnradpumpe äusserst präzise zueinander zu positionieren. Da Zahnradpumpen ferner mit Anschlussleitungen für das zu transportierende Fördermedium zu verbinden sind, ergeben sich hier weitere Einschränkungen bzw. Vorgaben bezüglich der gewünschten Position, die oft mit den erst genannten nicht übereinstimmen. Abhilfe schafft hier die Möglichkeit, dass die Antriebseinheit flexibel montiert werden kann, was allerdings lediglich im Niederleistungsbereich praktikabel ist.The disadvantage of this known embodiment are high demands on the position of each other connecting components: So are both The drive unit and the gear pump are extremely precise to position each other. Since gear pumps also with Connection lines for the medium to be transported there are more to connect here Restrictions or requirements regarding the desired Position that is often not with the former to match. Remedy here is the possibility that the drive unit can be flexibly assembled what however only practical in the low power range is.

Bei grossen Übertragungsleistungen ist die Montage der Magnetkupplung schwierig, da die Magnete sehr stark - und damit schwer - ausgebildet sind. Das Zusammenführen der Komponenten gestaltet sich derart, dass der jeweils zuletzt montierte Rotor am Spalttopf entlang geschoben werden muss. Dabei splittern sehr leicht die Ecken der aus zumeist sprödem magnetischem Werkstoff gefertigten Mitnahmemagnete.For large transmission capacities, the assembly of the Magnetic coupling difficult because the magnets are very strong - and so heavy - are trained. Merging the Components are designed so that the last one assembled rotor must be pushed along the containment shell. In doing so, the corners of the mostly splinter very easily brittle magnetic material manufactured driving magnets.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung mit einer Magnetkupplung anzugeben, welche die vorstehend genannten Nachteile nicht aufweist. The present invention is therefore based on the object based on a device with a magnetic coupling indicate which of the above disadvantages do not having.

Diese Aufgabe wird durch die im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Massnahmen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sowie eine Verwendung sind in weiteren Ansprüchen angegeben.This task is carried out in the characterizing part of the Measures specified claim 1 solved. Advantageous embodiments of the invention and one Use are specified in further claims.

Die Erfindung weist die folgenden Vorteile auf: Indem die von der Antriebseinheit angetriebene Welle mit dem antriebsseitigen Rotor gelenkig verbunden ist und indem die Achse des antriebsseitigen Rotors über Fixierelemente, welche vorzugsweise als Wälzlager ausgebildet sind, radial fixiert ist, müssen die Achsen der angetriebene Welle und diejenige des antriebseitigen Rotors nicht zusammenfallen. Diese können vielmehr eine fehlende Fluchtung aufweisen, ohne dass die Funktion der Gesamtanlage beeinträchtigt ist.The invention has the following advantages: By the shaft driven by the drive unit with the drive-side rotor is articulated and by the Axis of the drive-side rotor via fixing elements, which are preferably designed as roller bearings, radially is fixed, the axes of the driven shaft and that of the drive-side rotor does not coincide. Rather, these may be misaligned, without the function of the overall system being impaired.

Eine weitere Ausführungsvariante der Erfindung, bei welcher die Lagerstellen, d.h. die Wälzlager, radial zum Spalttopf der Magnetkupplung angeordnet sind, weist darüber hinaus den Vorteil auf, dass bei der Montage der Magnetkupplung deren Aussenrotor, geführt durch die Fixierelemente, über den Spalttopf geschoben werden kann, ohne dass ein Verkannten möglich ist. Diese Ausführungsform der Erfindung weist ferner den Vorteil auf, dass die Aussenrotorlagerung näher am Spalttopf und damit an dem Ort liegt, wo ein präzise Positionierung, insbesondere in radialer Richtung, funktionsentscheidend ist.Another embodiment variant of the invention, in which the storage locations, i.e. the rolling bearings, radial to the containment shell the magnetic clutch are arranged, also points the advantage that when assembling the magnetic coupling whose outer rotor, guided by the fixing elements, over the can can be pushed without a Misjudgment is possible. This embodiment of the invention also has the advantage that the outer rotor bearing closer to the containment shell and thus to the place where a precise positioning, especially in the radial direction, is crucial.

Die Erfindung wird nachfolgend anhand von Zeichnungen beispielsweise näher erläutert. Dabei zeigen

Fig. 1
eine erste Ausführungsform einer erfindungsgemässen Magnetkupplung,
Fig. 2
eine weitere Ausführungsform der erfindungsgemässen Magnetkupplung und
Fig. 3
Wellenabschnitte der Antriebswelle und eine Antriebseinheit zum Antreiben der Welle in schematischer Darstellung.
The invention is explained in more detail below with reference to drawings, for example. Show
Fig. 1
a first embodiment of a magnetic coupling according to the invention,
Fig. 2
a further embodiment of the magnetic coupling according to the invention and
Fig. 3
Shaft sections of the drive shaft and a drive unit for driving the shaft in a schematic representation.

In Fig. 1 ist eine Zahnradpumpe 1, eine Magentkupplung 2 und ein Kreuzgelenk 14 dargestellt, wobei zum Antreiben der Zahnradpumpe 1 eine Antriebseinheit (in Fig. 1 nicht dargestellt) an das Kreuzgelenk 14 angeschlossen ist.1 shows a gear pump 1, a magnetic coupling 2 and a universal joint 14 is shown, wherein to drive the Gear pump 1 is a drive unit (not in Fig. 1 shown) is connected to the universal joint 14.

Die Zahnradpumpe 1 besteht im wesentlichen aus einem Pumpengehäuse 21, aus zwei ineinandergreifenden Zahnrädern 3 und Wellenlager 6, in denen die Zahnräder 3 tragenden Wellen 4 gelagert sind. Eine der Wellen 4 ist aus dem Pumpengehäuse 21 für den Antrieb der Pumpe herausgeführt. Auf dieser verlängerten Welle, im folgenden Antriebswelle 7 genannt, sitzt ein zur Magnetkupplung 2 gehörender innerer Rotor 17, der auf seiner Oberfläche Magnete 18 aufweist. Ein äusserer Rotor 12, der auf seiner Innenfläche ebenfalls mit Magneten 19 bestückt ist, ist radial zum inneren Rotor 17 angeordnet, wobei zwischen dem inneren und dem äusseren Rotor 17 bzw. 12 ein sogenannter Spalttopf 16 vorgesehen ist, der eine vollständige Abdichtung ermöglicht. Antriebsseitig, d.h. an den äusseren Rotor 12 anschliessend und mit diesem verbunden, folgt ein Wellenabschnitt 11, der über ein mit dem Pumpengehäuse 21 verbindbares Fixierelement 8 in Position gehalten wird, d. h. die Beweglichkeit des Wellenabschnittes 11 - und damit auch des äusseren Rotors 12 - ist in radialer Richtung auf das Lagerspiel eines vorzugsweise als Wälzlager 10 ausgebildeten Lagers erfindungsgemäss eingeschränkt.The gear pump 1 consists essentially of a Pump housing 21, consisting of two intermeshing gears 3 and shaft bearing 6, in which the gears 3 supporting Shafts 4 are stored. One of the waves 4 is from the Pump housing 21 led out for driving the pump. On this extended shaft, in the following drive shaft 7 called, sits an inner part of the magnetic coupling 2 Rotor 17, which has magnets 18 on its surface. An outer rotor 12, which also on its inner surface is equipped with magnets 19, is radial to the inner rotor 17 arranged, between the inner and the outer A so-called containment shell 16 is provided for the rotor 17 or 12 that enables a complete seal. On the drive side, i.e. subsequent to the outer rotor 12 and connected to it, there follows a shaft section 11 which via a connectable to the pump housing 21 Fixing element 8 is held in position, d. H. the Mobility of the shaft section 11 - and thus also the outer rotor 12 - is in the radial direction on the Bearing clearance one preferably as a roller bearing 10 trained camp limited according to the invention.

Der Wellenabschnitt 11 ist des weiteren über ein Kreuzgelenk 14 mit einer Antriebswelle 13, d.h. vorzugsweise zunächst mit einem inneren Teil einer Antriebswelle, welcher innere Teil über ein zweites Kreuzgelenk (in Fig. 1 nicht dargestellt) mit der eigentlichen Antriebswelle einer Antriebseinheit (in Fig. 1 nicht dargestellt) verbunden.The shaft section 11 is further over a Universal joint 14 with a drive shaft 13, i.e. preferably first with an inner part of a Drive shaft, which inner part over a second Universal joint (not shown in Fig. 1) with the actual drive shaft of a drive unit (in FIG. 1 not shown) connected.

Damit bildet die Magnetkupplung 2 in bezug auf die radiale Beweglichkeit eine Einheit mit der Zahnradpumpe 1 bzw. mit deren Gehäuse 21, womit in vorteilhafterweise erreicht wird, dass die Antriebsachse 7 der Zahnradpumpe 1 mit der Antriebsachse 13 der Antriebseinheit nicht exakt zusammenfallen muss.The magnetic coupling 2 thus forms with respect to the radial one Mobility one unit with the gear pump 1 or with whose housing 21, which advantageously achieved is that the drive shaft 7 of the gear pump 1 with the Drive axis 13 of the drive unit is not exact must coincide.

Ein weiterer Vorteil wird dadurch erreicht, indem mindestens einer der Antriebswellenabschnitte, d.h. der Antriebswellenabschnitt vor dem ersten Kreuzgelenk 14 und/oder zwischen den beiden Kreuzgelenken und/oder nach dem zweiten Kreuzgelenk, teleskopartig aufgebaut ist und somit nach Bedarf verlängert bzw. verkürzt werden kann. Diese weiteren Ausführungsformen ermöglichen eine noch flexiblere Handhabung der Positionierung der Zahnradpumpe in bezug auf die Antriebseinheit.Another advantage is achieved by at least one of the drive shaft sections, i.e. the Drive shaft section in front of the first universal joint 14 and / or between the two universal joints and / or after the second universal joint, is telescopic and can be extended or shortened as required. These further embodiments still allow one more flexible handling of the positioning of the gear pump with respect to the drive unit.

Anstelle von Kreuzgelenken ist es auch denkbar, dass andere Gelenkarten verwendet werden. Es hat sich gezeigt, dass sich insbesondere Bogenzahnkupplungen, Gummikupplungen oder andere flexible Kupplungen hervorragend zur Realisierung der erfindungsgemässen Vorrichtung eignen.Instead of universal joints, it is also conceivable that others Joint types can be used. It has been shown that particularly curved tooth couplings, rubber couplings or other flexible couplings excellent for implementation the device according to the invention.

Das Fixierelement 8 wird mittels lösbaren Befestigungsmitteln 15, die vorzugsweise aus Schrauben bestehen, am Pumpengehäuse 21 befestigt. In einer bevorzugten Ausführungsform ist das Fixierelement 8 rohrförmig und schliesst die Magnetkupplung 2 gegen aussen ab, wobei Belüftungsbohrungen 9 vorgesehen sind.The fixing element 8 is detachable Fasteners 15, preferably made of screws exist, attached to the pump housing 21. In a preferred embodiment is the fixing element 8 tubular and closes the magnetic coupling 2 to the outside from, ventilation holes 9 are provided.

Fig. 2 zeigt eine weitere Ausführungsform der Erfindung, wobei bei dieser die Wälzlager 10 radial zum Spalttopf 16 angeordnet sind. Damit befindet sich die Lagerung des äusseren Rotors 12 näher am Spalttopf 16 und damit an dem Ort, wo eine präzise Positionierung funktionsentscheidend ist.2 shows a further embodiment of the invention, the roller bearings 10 being radial to the containment shell 16 are arranged. This is the storage of the outer rotor 12 closer to the containment shell 16 and thus to the Place where precise positioning is critical is.

Fig. 2 zeigt im wesentlichen die Magnetkupplung 2. Von der Zahnradpumpe 1 sind lediglich einzelne Teile, nämlich das Pumpengehäuse 21 und Ausschnitte der Wellendurchführung der Antriebswelle 7, dargestellt.Fig. 2 shows essentially the magnetic coupling 2. From the Gear pump 1 are only individual parts, namely that Pump housing 21 and cutouts of the shaft bushing Drive shaft 7 shown.

Neben dem erwähnten Vorteil bezüglich einer idealen Kraftaufnahme bei radial angeordneten Wälzlagern 10 weist die weitere Ausführungsform ferner den Vorteil auf, dass die Montage in einfacher Weise vorgenommen werden kann. So wird der äussere Rotor 12 am Schluss der Montage einfach auf den Spalttopf 16 aufgeschoben, ohne dass dieser berührt wird, denn die Wälzlager 10 sorgen dafür, dass die Magnete 19 des äusseren Rotors 12 und der Spalttopf 16 dauernd beabstandet sind.In addition to the mentioned advantage regarding an ideal Force absorption in radially arranged roller bearings 10 has the further embodiment also has the advantage that assembly can be carried out in a simple manner. So the outer rotor 12 becomes simple at the end of the assembly pushed onto the can 16 without touching it is because the roller bearings 10 ensure that the magnets 19 of the outer rotor 12 and the containment shell 16 continuously are spaced.

Schliesslich sind in Fig. 3, in schematischer Darstellung, drei Wellenabschnitte 31, 32 und 33 der Antriebswelle dargestellt, wobei der erste Wellenabschnitt 31 mit dem zweiten Wellenabschnitt 32 über eine erste flexible Kupplung 34 und der zweite Wellenabschnitt 32 mit dem dritten Wellenabschnitt 33 über eine zweite flexible Kupplung 35 verbunden sind. Der Wellenabschnitt 33 entspricht der starren, aus einer Antriebseinheit 30 heraus geführten Antriebswelle. Auf der anderen Seite ist der äussere Rotor 12 (Fig. 1 und 2) der Magnetkupplung 2 (Fig. 1 und 2) mit dem ersten Wellenabschnitt 31 verbunden. Die flexible Kupplungen 34 und 35 sind in einer der erläuterten Form realisiert.Finally, in Fig. 3, in a schematic representation, three shaft sections 31, 32 and 33 of the drive shaft shown, the first shaft portion 31 with the second shaft section 32 via a first flexible Coupling 34 and the second shaft section 32 with the third shaft section 33 via a second flexible Coupling 35 are connected. The shaft section 33 corresponds to the rigid, out of a drive unit 30 guided drive shaft. On the other hand is the outer rotor 12 (FIGS. 1 and 2) of the magnetic coupling 2 (FIG. 1 and 2) connected to the first shaft section 31. The Flexible couplings 34 and 35 are in one of those discussed Form realized.

In einer bevorzugten Ausführungsform ist der zweite Wellenabschnitt 32 teleskopartig ausgebildet.In a preferred embodiment, the second is Shaft section 32 formed telescopically.

Claims (10)

Vorichtung mit einer Magnetkupplung (2) zum berührungsfreien Übertragen eines Drehmomentes von einer ersten, mit einer Antriebseinheit gekoppelten Welle (13) auf eine zweite, in einem Gehäuse (21) gelagerten Welle (7), wobei eine der Wellen (7) mit einem Magnete (18) aufweisenden inneren Rotor (17) und die andere Welle (13) mit einem Magnete (19) aufweisenden äusseren Rotor (12) versehen ist, dadurch gekennzeichnet, dass die von der Antriebseinheit angetriebene Welle (13) mit dem antriebsseitigen Rotor (12) gelenkig verbunden ist und dass die Achse des antriebsseitigen Rotors (12) über Fixierelemente (8), welche mit dem Gehäuse (21) verbindbar sind, radial fixierbar ist.Device with a magnetic coupling (2) for non-contact transmission of a torque of one first shaft (13) coupled to a drive unit on a second shaft mounted in a housing (21) (7), one of the shafts (7) having a magnet (18) having inner rotor (17) and the other shaft (13) with an outer rotor (12) having a magnet (19) is provided, characterized in that the of the Drive unit driven shaft (13) with the drive-side rotor (12) is articulated and that the axis of the drive-side rotor (12) over Fixing elements (8) which can be connected to the housing (21) are radially fixable. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Verbindung zwischen dem antriebsseitigen Rotor (12) und der von der Antriebseinheit angetriebenen Welle (13) aus mindestens einer, vorzugsweise zwei flexiblen Kupplungen (14) besteht.Device according to claim 1, characterized in that the connection between the drive side rotor (12) and the shaft driven by the drive unit (13) from at least one, preferably two flexible Couplings (14). Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass mindestens eine der flexiblen Kupplungen (14) wahlweise eine Gummikupplung, eine Bogenzahnkupplung oder ein Kreuzgelenk, oder eine Kombination von zwei oder mehreren der genannten Kupplungsarten, ist. Device according to claim 2, characterized in that at least one of the flexible couplings (14) either a rubber coupling, a curved tooth coupling or a universal joint, or a combination of two or several of the types of coupling mentioned. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass zwischen den Fixierelementen (8) und dem antriebsseitigen Rotor (12) Lagereinheiten (10), vorzugsweise Wälzlager, vorgesehen sind.Device according to one of the preceding claims, characterized in that between the fixing elements (8) and the drive-side rotor (12) bearing units (10), preferably roller bearings, are provided. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Lagereinheiten (10) radial in bezug auf den antriebsseitigen Rotor (12) angeordnet sind.Device according to claim 4, characterized in that the bearing units (10) radially with respect to the drive-side rotor (12) are arranged. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Fixierelement (8) rohrförmige ist.Device according to one of the preceding claims, characterized in that the fixing element (8) is tubular. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass Belüftungsbohrungen (9) im Fixierelement (8) vorgesehen sind.Apparatus according to claim 6, characterized in that ventilation holes (9) in the fixing element (8) are provided. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass ein Wellenabschnitt (31, 32, 33) der Antriebswelle (13) teleskopartig ausgebildet ist.Device according to one of the preceding claims, characterized in that a shaft section (31, 32, 33) of the drive shaft (13) is telescopic. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass zwischen dem inneren und dem äusseren Rotor (17; 12) ein Spalttopf (16) vorgesehen ist, mit Hilfe dessen eine vollständige Abdichtung erreichbar ist.Device according to one of the preceding claims, characterized in that between the inner and the outer rotor (17; 12) is provided with a can (16), with the help of which a complete seal can be achieved is. Verwendung der Vorrichtung nach einem der Ansprüche 1 bis 9 zum Antreiben einer Zahnradpumpe (1).Use of the device according to one of claims 1 to 9 for driving a gear pump (1).
EP99122988A 1999-11-19 1999-11-19 Magnetic coupling system and use of it for a gear pump Expired - Lifetime EP0979945B8 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59912176T DE59912176D1 (en) 1999-11-19 1999-11-19 Device with a magnetic coupling and use of the same for a gear pump
EP99122988A EP0979945B8 (en) 1999-11-19 1999-11-19 Magnetic coupling system and use of it for a gear pump
US09/643,736 US6518684B1 (en) 1999-11-19 2000-08-23 Device having a magnetic clutch and use thereof for a gear pump
JP2000349653A JP2001187926A (en) 1999-11-19 2000-11-16 Device with magnetic coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99122988A EP0979945B8 (en) 1999-11-19 1999-11-19 Magnetic coupling system and use of it for a gear pump

Publications (4)

Publication Number Publication Date
EP0979945A2 true EP0979945A2 (en) 2000-02-16
EP0979945A3 EP0979945A3 (en) 2000-05-31
EP0979945B1 EP0979945B1 (en) 2005-06-15
EP0979945B8 EP0979945B8 (en) 2005-08-10

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EP99122988A Expired - Lifetime EP0979945B8 (en) 1999-11-19 1999-11-19 Magnetic coupling system and use of it for a gear pump

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US (1) US6518684B1 (en)
EP (1) EP0979945B8 (en)
JP (1) JP2001187926A (en)
DE (1) DE59912176D1 (en)

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WO2002031370A1 (en) * 2000-10-11 2002-04-18 Andrew Boyd French Drive apparatus
US7421929B2 (en) 2001-10-11 2008-09-09 Andrew French Drive apparatus
US7687956B2 (en) 2003-01-17 2010-03-30 Magnetic Torque International, Ltd. Drive motor system
CN104329251A (en) * 2014-10-30 2015-02-04 江苏海天泵阀制造有限公司 Miniature ultralow-temperature magnetism-driven gear pump

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JP2006187257A (en) * 2005-01-07 2006-07-20 Daiyanitorikkusu Kk Method for producing amide compound and acrylamide-based polymer
JP2009502502A (en) 2005-08-03 2009-01-29 シーシーエムアイ コーポレイション Enhancement of surface active solid-phase heterogeneous catalysts
NL2013596B1 (en) * 2014-10-08 2016-10-04 Walraven Holding Bv J Van Vibration isolating insert for a pipe clip and method for manufacturing such an insert.
BR112018067950A2 (en) * 2016-02-25 2019-01-15 Advancing Pump Tech Corp pumping apparatus
EP3266476B1 (en) * 2016-07-08 2021-10-27 Fenwal, Inc. Flexible impeller pumps and disposable fluid flow circuits incorporating such pumps
JP6458225B2 (en) * 2017-03-24 2019-01-30 大東工業株式会社 Magnet gear pump and manufacturing method thereof
CN114320890A (en) * 2022-01-10 2022-04-12 淮安市虎力液压机械有限公司 High-stability hydraulic gear pump

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002031370A1 (en) * 2000-10-11 2002-04-18 Andrew Boyd French Drive apparatus
US7024963B2 (en) 2000-10-11 2006-04-11 Andrew French Drive apparatus
US7421929B2 (en) 2001-10-11 2008-09-09 Andrew French Drive apparatus
US7687956B2 (en) 2003-01-17 2010-03-30 Magnetic Torque International, Ltd. Drive motor system
CN104329251A (en) * 2014-10-30 2015-02-04 江苏海天泵阀制造有限公司 Miniature ultralow-temperature magnetism-driven gear pump

Also Published As

Publication number Publication date
JP2001187926A (en) 2001-07-10
EP0979945B1 (en) 2005-06-15
EP0979945A3 (en) 2000-05-31
US6518684B1 (en) 2003-02-11
EP0979945B8 (en) 2005-08-10
DE59912176D1 (en) 2005-07-21

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