EP1460275B1 - Motor pump - Google Patents

Motor pump Download PDF

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Publication number
EP1460275B1
EP1460275B1 EP03006417A EP03006417A EP1460275B1 EP 1460275 B1 EP1460275 B1 EP 1460275B1 EP 03006417 A EP03006417 A EP 03006417A EP 03006417 A EP03006417 A EP 03006417A EP 1460275 B1 EP1460275 B1 EP 1460275B1
Authority
EP
European Patent Office
Prior art keywords
adapter
motor pump
impeller
motor
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
Application number
EP03006417A
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German (de)
French (fr)
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EP1460275A1 (en
Inventor
Jörgen Schmidt
Hans-Dieter Schmidt
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.)
Grundfos AS
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Grundfos AS
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Filing date
Publication date
Application filed by Grundfos AS filed Critical Grundfos AS
Priority to EP03006417A priority Critical patent/EP1460275B1/en
Priority to DE50300854T priority patent/DE50300854D1/en
Publication of EP1460275A1 publication Critical patent/EP1460275A1/en
Application granted granted Critical
Publication of EP1460275B1 publication Critical patent/EP1460275B1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/08Sealings
    • F04D29/16Sealings between pressure and suction sides
    • F04D29/165Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/04Shafts or bearings, or assemblies thereof
    • F04D29/046Bearings
    • F04D29/0467Spherical bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2261Rotors specially for centrifugal pumps with special measures
    • F04D29/2266Rotors specially for centrifugal pumps with special measures for sealing or thrust balance

Definitions

  • the invention relates to a motor pump according to the preamble of claim 1.
  • Motor pumps of this type are well known, for. Example, by the US patent US-A-3 803 432. They are commonly used in boilers, in a wall area a water inlet and a water outlet have a small distance from each other.
  • the motor pump is adapted to it so that its pump impeller is exposed or is substantially exposed, such that its suction mouth is directly to the water outlet of the wall area where the motor pump is attached, connects. Because the motor pump in this case has no special discharge nozzle, promotes the impeller directly into the water inlet of the boiler wall area. Thus, can the circulation of the liquid in the boiler optimally carried out, wherein good pumping conditions are maintained in the area of the pump impeller.
  • British Patent GB-A-730 459 a by a motor rotatably driven centrifugal pump described. It consists in Essentially from a housing, which has a central suction inlet and a tangential to the spiral conveyor channel of this housing subsequent Compressor has, rotatably in the housing mounted on a drive shaft, promotional impeller with suction mouth and front cover plate and two pairs of mechanical seals on the pump impeller.
  • One mechanical seal pair is in front of each Suction mouth of the impeller and arranged behind the impeller, in order to avoid that the impeller from the pumped liquid originating axial thrust is exposed.
  • Each mechanical seal pair consists of a wheel attached to the, together with this rotating seal ring and one on the pump housing arranged, non-rotating sealing ring.
  • Rotating seal ring and non-rotating sealing ring lie with their sealing ring surfaces by spring force against each other and form a first seal. Furthermore, the two non-rotating sealing rings by means O-rings sealingly arranged on the pump housing and form so second seals.
  • the two mechanical seal pairs cause together with the O-rings a balanced Axialkraftbelastung of the impeller and thereby prevent an axial thrust on the drive shaft of the centrifugal pump.
  • the object of the invention is to provide a motor pump the introductory type whose impeller designed so is that when replacing the motor pump to simple and cost-effective way to design different water-bearing Facilities, but also with even different types of their Housing can be adjusted so that optimum flow conditions guaranteed in the impeller area.
  • the advantages which can be achieved with the invention are, in particular, that the motor pump in a simple and inexpensive way to optimal Flow conditions in the area of their impeller by use an adapter can be adjusted.
  • the motor pump can used in many installations, especially in boilers, in their moon area, which has two fluid connections, are designed differently for the assembly of the motor pump, such that in each case an axially larger gap between the Wall area and the pump impeller is to bridge.
  • the motor pump can also have a housing itself, in the Pumpengorgerad Scheme because of different rotating Motor pump heads of different design is. In both cases the different design is now achieved that the motor pump optimal flow conditions according to the invention in the region of its pump impeller ensures and thus continues its high efficiency guaranteed.
  • the motor pump can be designed to be a basic version without Adapter is usable, d. H. z. B. leading to such a liquid Device can be mounted that does not have an adapter on the pump impeller needed. If a motor pump in particular at such Boilers used in which the pump exchange a larger Space between the pump impeller and the fluid connections facing wall area of the relevant boiler is overcome, the adapter is used when mounting the motor pump. This can be the basic version of the motor pump as a loose additional part attached or already mounted on the impeller. This adapter is thus used when the space between the pump impeller without adapter and the water outlet of the concerned Wall area is too big. Without inserting an adapter would be a too large free gap arise, the flow conditions and thus deteriorates the efficiency of the pump.
  • an advantageous embodiment of the motor pump according to the invention is that the adapter in the form of an annular disc with a annular approach, which faces away from the pump impeller Side of the annular disc is provided in the form of an annular disc or in Form of a hub-shaped component is formed.
  • a clamping ring To attach the Adapter on the pump impeller is provided a clamping ring, the frictionally engages the pump impeller.
  • Such adapters are particularly simple and inexpensive to manufacture.
  • Fig. 1 shows a rotor 1 of an electric not shown Drive motor for a likewise only partially illustrated pump.
  • rotor 1 is for example a conventional permanent magnet rotor in partial spherical shape, which is shown in more detail in Fig ..
  • the rotor 1 can but also be such with conventional winding coils.
  • the respectively stator (not shown) matching to the rotor 1 is corresponding to electrical and other requirements constructed in a conventional manner.
  • the rotor 1 is connected to a pump impeller 2 directly against rotation, such that the pump impeller is rotationally driven by the rotor becomes.
  • the unit formed by the rotor 1 and the pump impeller 2 an annular adapter 3 is centrally assigned, such that the Adapter to the impeller 2 releasably fastened bar.
  • the adapter is provided with a clamping ring 4, as shown in FIG. 1 clearly visible is. With the help of this clamping ring of the adapter 3 to the pump impeller 2 positively frictionally attached.
  • the adapter 3 has on its rear side, the pump impeller second has turned away, an annular recess 5, in which the clamping ring 4 is inserted.
  • On the outer circumference of the adapter for example three recesses 6 are provided, in which three clamping fingers 7des Locking ring 4 engage, (Fig. 1).
  • the recesses 6 and the inside engaging clamping fingers 7 thus form locking means to the clamping ring 4 to the adapter 3 and the adapter to the pump impeller 2 hold (Fig. 3).
  • the clamping ring 4 is arranged captive on the adapter 3, so that the adapter together with the clamping ring 4 a unit forms.
  • the captivity of the clamping ring 4 can be effected be that he after his insertion in the recess 5 in usual Way caulked or fixed for example by spot welding becomes.
  • the adapter 3 may be formed in various embodiments be.
  • Figures 1, 2 and 3 show an example embodiment.
  • the embodiment of the adapter 3 shown in Figures 1, 2 and 3 consists of an annular disc 8, on its the impeller 2 opposite side is provided with an annular projection 9, wherein the annular disc and the approach form a one-piece component.
  • the annular projection 9 forms a kind of hub and causes an axial dimension A. (Fig. 3) for the bridging of the above-mentioned intermediate space between the pump impeller and a wall area with fluid connections.
  • This wall area can be such a z. B. a boiler.
  • Which axial dimension A is selected in each case depends from the boiler types.
  • This Axialengine can also from the Impeller-side housing part of the motor pump types, for others Liquid leading facilities, eg. B. piping systems used will depend.
  • the motor pump without the adapter. 3 at the respective liquid-conducting device or in conjunction be used with their impeller-side housing part.
  • the adapter 3, the motor pump is usually attached as a loose additional part, so that can be decided on the mounting location of the motor pump, whether the Adapter on the pump impeller 3 must be used.
  • this can also be formed be that it consists only in the form of an annular disk, d. H. without Approach 9.
  • the annular disk is then in total in terms of their thickness Essentially designed so that the aforementioned axial dimension A at least given in the suction mouth of the pump impeller.
  • the adapter can proceed as be that this formed practically only as a ring-shaped approach is. In this form it is comparable to the aforementioned annular Approach 9.
  • the adapter 3 then forms a kind of hub-shaped Component.
  • the impeller 2 which is a front cover plate 2a, so attached to the rotor 1, that on this cover plate provided blades 2b facing the rotor 1.
  • This training and arrangement of the pump impeller is also expedient in that than that the adapter 3 then easily by means of Clamping fingers 7 of the clamping ring 4 on the cover plate 2a of the impeller 2 can be attached (Fig. 3), at which it centers and immediately is applied.
  • Fig. 3 shows a pump impeller 2 with front cover plate 2a.
  • a pump impeller with only a back cover letter use, on which the blades 2b are integral (not shown), so that the pump impeller 2 on its front side disc free is.
  • the adapter 3 in this case the shape of an annular disc with or without approach 9, then lies on the front of the Shovels such a pump impeller firmly, with the help of the clamping ring 4.
  • the adapter exercises in this way two functions namely, its bridging function and additionally the function as front cover disc.
  • the impeller 2 may also be formed in this way be that it has conventionally two shields or that the blades are formed integrally with the rotor 1 are. Also in these two cases, the appropriate adapter the pump impeller or on the blades releasably secured, z. B. by means Clamping means.
  • the rotor 1 shown in FIG. 3 has a rotationally symmetrical carrier 10, on one side of the pump impeller 2 with the adapter. 3 is attached.
  • the carrier 10 consists essentially of a disc-shaped Body 10a with a rear, cylindrical extension 10b.
  • a part-spherical shell magnetic body 11 is by means of a thin Mantels 12 attached to the disk body 10a and the extension 10b.
  • a bearing body 13 is provided, the is held in position by means of a bushing 14.
  • the jacket 12 can also be formed as shown be that he also the pump impeller 2, a retaining ring. 2 c, directly attached to the carrier 10 by clamping, as shown in FIG. 3 shows.
  • a partially illustrated motor pump 18 is shown.
  • shown are essentially a suction-side housing part 19 of the motor pump 18 with the suction nozzle 20 and the discharge nozzle 21, the rotor 1 with the attached impeller 2 and the at this Pump impeller clamped adapter 3 and a support device 22 with a central, hineinerstreckigem axially into the rotor 1 Support 23.
  • a fixed ball head 24 At the inner end of this support is a fixed ball head 24, which engages in the bearing body 13.
  • the ball head 24 and the bearing body 13 form a movable pivot bearing for the Permanent magnet rotor 1, such that this rotor in addition to his Rotation in addition to self-adjusting can align to a flawless to be able to assume a rotating operating setting.
  • the housing part 19, the nozzle 20 and 21 leading to liquid Pipelines are connectable, with an inlet 25, which with the Suction port 20 communicates, and with an outlet 26, which communicates with the Pressure port 21 communicates, provided.
  • This housing part has a inner wall portion 27, the pump impeller 2 a larger having axial distance. Therefore, the impeller is with a Adapter 3 provided to the axial gap between this Wall portion 27 and pump impeller 2 for the purpose of ensuring good flow conditions and a good efficiency in the suction mouth area to bridge the pump impeller. At standstill of Rotor 1 will this, due to its center of gravity, to the Tilt ball head 24 or inclined.
  • the adapter 3 is used in this dormant operating condition also to the rotor 1 on the ball head 24 to keep supported by the adapter on the wall area 27 comes to the plant, so that the rotor does not fall off the ball head.
  • the rotor can thus its rotating operating function when switching take the motor pump again safely.
  • motor pump used in this description is so too understand that even the aforementioned motor pump head alone, in the Essentially the rotor 1 with the pump impeller 2 and the adapter 3, the electric stator and the thread 19a of the pump housing part 19 screw-on motor housing (both not shown) contains, of which is included.
  • the motor pump for example, used on a boiler.
  • the motor pump may be the aforementioned motor pump housing part 19 additionally included.
  • the motor pump preferably installed in a piping system.
  • the housing part 19 is not of the Piping dismantled, but it is only the above explained motor pump head disassembled from the housing part 19 and replaced by a new motor pump head, in which the pump impeller of the rotor in design-related dependence of the new motor pump head must be provided with an adapter 3 or not.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die Erfindung geht aus von einer Motorpumpe gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a motor pump according to the preamble of claim 1.

Motorpumpen dieser Art sind allgemein bekannt, z. B. durch die US-Patentschrift US-A-3 803 432. Sie werden häufig eingesetzt bei Heizkesseln, die in einem Wandbereich einen Wassereinlass und einen Wasserauslass mit geringem Abstand voneinander aufweisen. Die Motorpumpe ist in Anpassung daran so ausgebildet, dass ihr Pumpenlaufrad freiliegt oder im Wesentlichen freiliegt, derart, dass sein Saugmund sich unmittelbar an den Wasserauslass des Wandbereiches, an dem die Motorpumpe befestigt wird, anschließt. Da die Motorpumpe in diesem Fall keinen besonderen Druckstutzen aufweist, fördert das Pumpenlaufrad direkt in den Wassereinlass des Heizkesselwandbereiches. Somit kann die Umwälzung der Flüssigkeit in dem Heizkessel optimal erfolgen, wobei im Bereich des Pumpenlaufrades gute Pumpverhältnisse erhalten bleiben. Abhängig von der jeweiligen Kesselbauart ist es daher erforderlich, unterschiedliche Motorpumpen als Ersatz im Defektfall der Pumpe bereit zu halten, deren Laufrad in ihrem Saugmundbereich zu dem Wasserauslass des jeweiligen Heizkessels passt. Insbesondere die Lagerhaltung eines Vorrats an den jeweiligen Motorpumpen als Ersatzpumpen ist somit ein hoher Kostenfaktor. Es ist daher wünschenswert, eine Motorpumpe zur Verfügung zu haben, die auf einfache Weise für den jeweiligen Anwendungszweck im Bereich des Laufrades angepasst werden kann. Motor pumps of this type are well known, for. Example, by the US patent US-A-3 803 432. They are commonly used in boilers, in a wall area a water inlet and a water outlet have a small distance from each other. The motor pump is adapted to it so that its pump impeller is exposed or is substantially exposed, such that its suction mouth is directly to the water outlet of the wall area where the motor pump is attached, connects. Because the motor pump in this case has no special discharge nozzle, promotes the impeller directly into the water inlet of the boiler wall area. Thus, can the circulation of the liquid in the boiler optimally carried out, wherein good pumping conditions are maintained in the area of the pump impeller. Depending on the particular boiler design, it is therefore necessary different motor pumps as a replacement in case of failure of the pump ready to keep their impeller in their suction mouth to the water outlet of the respective boiler. In particular, the storage a supply of the respective motor pumps as replacement pumps is thus a high cost factor. It is therefore desirable to have a motor pump to have available in a simple way for each Application be adapted in the field of impeller can.

Des Weiteren ist in der britischen Patentschrift GB-A-730 459 eine durch einen Motor drehantreibbare Kreiselpumpe beschrieben. Sie besteht im Wesentlichen aus einem Gehäuse, das einen zentralen Saugeinlass und einen sich tangential an den spiralen Förderkanal dieses Gehäuses anschließenden Druckstutzen aufweist, einem in dem Gehäuse drehfest auf einer Antriebswelle befestigten, fördernden Kreiselrad mit Saugmund und vorderer Deckscheibe sowie aus zwei Gleitringdichtungspaaren am Pumpenlaufrad. Je ein Gleitringdichtungspaar ist vor dem Saugmundbereich des Kreiselrades und hinter dem Kreiselrad angeordnet, um zu vermeiden, dass das Kreiselrad keinem aus der Förderflüssigkeit herrührenden Axialschub ausgesetzt ist. Jedes Gleitringdichtungspaar besteht aus einem am Kreiselrad befestigten, zusammen mit diesem rotierenden Gleitring und aus einem an dem Pumpengehäuse angeordneten, nicht rotierenden Dichtungsring. Rotierender Gleitring und nicht rotierender Dichtungsring liegen mit ihren Dichtungsringflächen mittels Federkraft gegeneinander an und bilden eine erste Abdichtung. Femer sind die beiden nicht rotierenden Dichtungsringe mittels O-Ringen dichtend an dem Pumpengehäuse angeordnet und bilden so zweite Abdichtungen. Die beiden Gleitringdichtungspaare bewirken zusammen mit den O-Ringen eine ausgeglichene Axialkraftbelastung des Pumpenrades und verhindern dadurch einen Axialschub auf die Antriebswelle der Kreiselpumpe.Furthermore, in British Patent GB-A-730 459 a by a motor rotatably driven centrifugal pump described. It consists in Essentially from a housing, which has a central suction inlet and a tangential to the spiral conveyor channel of this housing subsequent Compressor has, rotatably in the housing mounted on a drive shaft, promotional impeller with suction mouth and front cover plate and two pairs of mechanical seals on the pump impeller. One mechanical seal pair is in front of each Suction mouth of the impeller and arranged behind the impeller, in order to avoid that the impeller from the pumped liquid originating axial thrust is exposed. Each mechanical seal pair consists of a wheel attached to the, together with this rotating seal ring and one on the pump housing arranged, non-rotating sealing ring. Rotating seal ring and non-rotating sealing ring lie with their sealing ring surfaces by spring force against each other and form a first seal. Furthermore, the two non-rotating sealing rings by means O-rings sealingly arranged on the pump housing and form so second seals. The two mechanical seal pairs cause together with the O-rings a balanced Axialkraftbelastung of the impeller and thereby prevent an axial thrust on the drive shaft of the centrifugal pump.

Die Aufgabe der Erfindung besteht in der Bereitstellung einer Motorpumpe der einleitend angeführten Art, deren Laufrad so ausgestaltet ist, dass es bei einem Austausch der Motorpumpe auf einfache und kostengünstige Weise an bauartbedingt unterschiedliche wasserführende Einrichtungen, aber auch bei selbst unterschiedlicher Bauart ihres Gehäuses so angepasst werden kann, dass optimale Strömungsverhältnisse im Laufradbereich gewährleistet sind.The object of the invention is to provide a motor pump the introductory type whose impeller designed so is that when replacing the motor pump to simple and cost-effective way to design different water-bearing Facilities, but also with even different types of their Housing can be adjusted so that optimum flow conditions guaranteed in the impeller area.

Die Lösung dieser Aufgabe ist in dem Anspruch 1 angeführt. The solution to this problem is stated in claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass die Motorpumpe auf einfache und kostengünstige Weise an optimale Strömungsverhältnisse im Bereich ihres Laufrades durch Verwendung eines Adapters angepasst werden kann. Die Motorpumpe kann bei vielen Einrichtungen, insbesondere bei Heizkesseln eingesetzt werden, die in ihrem Wondbereich, der zwei Flüssigkeitsanschlüsse aufweist, für die Montage der Motorpumpe unterschiedlich ausgebildet sind, derart, dass jeweils ein axial größerer Zwischenraum zwischen dem Wandbereich und dem Pumpenlaufrad zu überbrücken ist. Des Weiteren kann die Motorpumpe aber auch selbst ein Gehäuse aufweisen, das im Pumpenlaufradbereich wegen unterschiedlicher rotierender Motorpumpenköpfe unterschiedlicher Bauart ist. In beiden Fällen der unterschiedlichen Bauart wird nunmehr erreicht, dass die Motorpumpe nach der Erfindung im Bereich ihres Pumpenlaufrades optimale Strömungsverhältnisse sicherstellt und damit ihren hohen Wirkungsgrad weiterhin gewährleistet.The advantages which can be achieved with the invention are, in particular, that the motor pump in a simple and inexpensive way to optimal Flow conditions in the area of their impeller by use an adapter can be adjusted. The motor pump can used in many installations, especially in boilers, in their moon area, which has two fluid connections, are designed differently for the assembly of the motor pump, such that in each case an axially larger gap between the Wall area and the pump impeller is to bridge. Furthermore but the motor pump can also have a housing itself, in the Pumpenlaufradbereich because of different rotating Motor pump heads of different design is. In both cases the different design is now achieved that the motor pump optimal flow conditions according to the invention in the region of its pump impeller ensures and thus continues its high efficiency guaranteed.

Die Motorpumpe kann so konstruiert sein, dass sie als Basisversion ohne Adapter verwendbar ist, d. h. z. B. an einer solchen Flüssigkeit führenden Einrichtung montiert werden kann, die keinen Adapter am Pumpenlaufrad benötigt. Wird eine Motorpumpe insbesondere bei solchen Heizkesseln verwendet, bei denen beim Pumpentausch ein größerer Zwischenraum zwischen dem Pumpenlaufrad und dem die Flüssigkeitsanschlüsse aufweisenden Wandbereich des betreffenden Heizkessels zu überwinden ist, wird bei Montage der Motorpumpe der Adapter verwendet. Dieser kann der Basisversion der Motorpumpe als loses Zusatzteil beigefügt oder bereits an deren Laufrad montiert sein. Dieser Adapter wird somit verwendet, wenn der Zwischenraum zwischen dem Pumpenlaufrad ohne Adapter und dem Wasserauslass des betreffenden Wandbereichs zu groß ist. Ohne Einsetzen eines Adapters würde ein zu großer freier Spalt entstehen, der die Strömungsverhältnisse und damit den Wirkungsgrad der Pumpe verschlechtert. Selbstverständlich ist es möglich, mehrere Adapter, die in ihrem axialen Durchflussbereich eine unterschiedliche axiale Dicke aufweisen, als Bausatz zu verwenden. Ein noch weiterer Vorteil der erfindungsgemäßen Motorpumpe besteht darin, dass die Herstellung und Lagerhaltung von Adaptern im Vergleich zu Motorpumpen mit Laufrädern der jeweils erforderlichen Größe einen wesentlich kleineren Kostenfaktor darstellen.The motor pump can be designed to be a basic version without Adapter is usable, d. H. z. B. leading to such a liquid Device can be mounted that does not have an adapter on the pump impeller needed. If a motor pump in particular at such Boilers used in which the pump exchange a larger Space between the pump impeller and the fluid connections facing wall area of the relevant boiler is overcome, the adapter is used when mounting the motor pump. This can be the basic version of the motor pump as a loose additional part attached or already mounted on the impeller. This adapter is thus used when the space between the pump impeller without adapter and the water outlet of the concerned Wall area is too big. Without inserting an adapter would be a too large free gap arise, the flow conditions and thus deteriorates the efficiency of the pump. Of course it is possible to have multiple adapters in their axial flow area have different axial thickness, to use as a kit. One Yet another advantage of the motor pump according to the invention in that compared the manufacture and storage of adapters to motor pumps with wheels of the required size represent a much smaller cost factor.

Eine vorteilhafte Ausgestaltung der erfindungsgemäßen Motorpumpe besteht darin, dass der Adapter in Form einer Ringscheibe mit einem ringförmigen Ansatz, der auf der dem Pumpenlaufrad abgewandten Seite der Ringscheibe vorgesehen ist, in Form einer Ringscheibe oder in Form eines nabenförmigen Bauteiles ausgebildet ist. Zur Befestigung der Adapter an dem Pumpenlaufrad ist ein Klemmring vorgesehen, der kraftformschlüssig an dem Pumpenlaufrad angreift. Solche Adapter sind besonders einfach aufgebaut und kostengünstig herzustellen.An advantageous embodiment of the motor pump according to the invention is that the adapter in the form of an annular disc with a annular approach, which faces away from the pump impeller Side of the annular disc is provided in the form of an annular disc or in Form of a hub-shaped component is formed. To attach the Adapter on the pump impeller is provided a clamping ring, the frictionally engages the pump impeller. Such adapters are particularly simple and inexpensive to manufacture.

Die Erfindung ist nachstehend anhand eines in den anliegenden Zeichnungen dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:

Figuren 1 und 2
in Perspektive eine auseinandergezogene Darstellung des Ausführungsbeispieles,
Fig. 3
einen Axialschnitt durch das Ausführungsbeispiel nach den Figuren 1 und 2 in zusammengesetztem Zustand,
Fig. 4
einen Axialschnitt durch das Ausführungsbeispiel in teilweise montiertem Zustand.
The invention is explained below with reference to an embodiment illustrated in the accompanying drawings. Show it:
Figures 1 and 2
in perspective an exploded view of the embodiment,
Fig. 3
an axial section through the embodiment of Figures 1 and 2 in the assembled state,
Fig. 4
an axial section through the embodiment in a partially assembled state.

Fig. 1 zeigt einen Rotor 1 eines nicht weiter dargestellten elektrischen Antriebsmotors für eine ebenfalls nur teilweise dargestellte Pumpe. Der dargestellte Rotor 1 ist beispielsweise ein üblicher Permanentmagnetrotor in Teilkugelform, der in Fig. genauer dargestellt ist. Der Rotor 1 kann jedoch auch ein solcher mit üblichen Wicklungsspulen sein. Der jeweils zu dem Rotor 1 passende Stator (nicht gezeigt) ist entsprechend den elektrischen und sonstigen Anforderungen in herkömmlicher Weise konstruiert.Fig. 1 shows a rotor 1 of an electric not shown Drive motor for a likewise only partially illustrated pump. Of the illustrated rotor 1 is for example a conventional permanent magnet rotor in partial spherical shape, which is shown in more detail in Fig .. The rotor 1 can but also be such with conventional winding coils. The respectively stator (not shown) matching to the rotor 1 is corresponding to electrical and other requirements constructed in a conventional manner.

Der Rotor 1 ist mit einem Pumpenlaufrad 2 unmittelbar drehfest verbunden, so dass das Pumpenlaufrad von dem Rotor drehend angetrieben wird. Der aus dem Rotor 1 und dem Pumpenlaufrad 2 gebildeten Einheit ist ein ringförmiger Adapter 3 zentrisch zugeordnet, derart, dass der Adapter an dem Pumpenlaufrad 2 lösbar befestig bar ist. Der Adapter ist mit einem Klemmring 4 versehen, wie aus Fig. 1 deutlich zu erkennen ist. Mit Hilfe dieses Klemmringes wird der Adapter 3 an dem Pumpenlaufrad 2 kraftformschlüssig befestigt.The rotor 1 is connected to a pump impeller 2 directly against rotation, such that the pump impeller is rotationally driven by the rotor becomes. The unit formed by the rotor 1 and the pump impeller 2 an annular adapter 3 is centrally assigned, such that the Adapter to the impeller 2 releasably fastened bar. The adapter is provided with a clamping ring 4, as shown in FIG. 1 clearly visible is. With the help of this clamping ring of the adapter 3 to the pump impeller 2 positively frictionally attached.

Der Adapter 3 weist auf seiner Rückseite, die dem Pumpenlaufrad 2 abgekehrt ist, eine ringförmige Vertiefung 5 auf, in welche der Klemmring 4 eingelegt wird. Am Außenumfang des Adapters sind beispielsweise drei Aussparungen 6 vorgesehen, in welche drei Klemmfinger 7des Klemmringes 4 eingreifen, (Fig. 1). Die Aussparungen 6 und die darin eingreifenden Klemmfinger 7 bilden somit Rastmittel, um den Klemmring 4 an dem Adapter 3 und dem Adapter an dem Pumpenlaufrad 2 festzuhalten (Fig. 3).The adapter 3 has on its rear side, the pump impeller second has turned away, an annular recess 5, in which the clamping ring 4 is inserted. On the outer circumference of the adapter, for example three recesses 6 are provided, in which three clamping fingers 7des Locking ring 4 engage, (Fig. 1). The recesses 6 and the inside engaging clamping fingers 7 thus form locking means to the clamping ring 4 to the adapter 3 and the adapter to the pump impeller 2 hold (Fig. 3).

Vorzugsweise ist der Klemmring 4 unverlierbar an dem Adapter 3 angeordnet, so dass der Adapter zusammen mit dem Klemmring 4 eine Einheit bildet. Die Unverlierbarkeit des Klemmringes 4 kann dadurch bewirkt werden, dass er nach seinem Einlegen in die Vertiefung 5 in üblicher Weise verstemmt oder beispielsweise durch Punktschweißen befestigt wird.Preferably, the clamping ring 4 is arranged captive on the adapter 3, so that the adapter together with the clamping ring 4 a unit forms. The captivity of the clamping ring 4 can be effected be that he after his insertion in the recess 5 in usual Way caulked or fixed for example by spot welding becomes.

Der Adapter 3 kann in verschiedenen Ausführungsformen ausgebildet sein. Die Figuren 1, 2 und 3 zeigen eine beispielsweise Ausführungsform.The adapter 3 may be formed in various embodiments be. Figures 1, 2 and 3 show an example embodiment.

Die in den Figuren 1, 2 und 3 gezeigte Ausführungsform des Adapters 3 besteht aus einer Ringscheibe 8, die auf ihrer dem Pumpenlaufrad 2 abgewandten Seite mit einem ringförmigen Ansatz 9 versehen ist, wobei die Ringscheibe und der Ansatz ein einstückiges Bauteil bilden. Der ringförmige Ansatz 9 bildet eine Art Nabe und bewirkt ein Axialmaß A (Fig. 3) für die Überbrückung des weiter vorstehend genannten Zwischenraumes zwischen dem Pumpenlaufrad und einem Wandbereich mit Flüssigkeitsanschlüssen. Dieser Wandbereich kann ein solcher z. B. eines Heizkessels sein. Welches Axialmaß A jeweils gewählt wird, hängt von den Heizkesseltypen ab. Dieses Axialmaß kann aber auch von dem laufradseitigen Gehäuseteil der Motorpumpentypen, die für andere Flüssigkeit führende Einrichtungen, z. B. Rohrleitungssysteme, verwendet werden, abhängen.The embodiment of the adapter 3 shown in Figures 1, 2 and 3 consists of an annular disc 8, on its the impeller 2 opposite side is provided with an annular projection 9, wherein the annular disc and the approach form a one-piece component. Of the annular projection 9 forms a kind of hub and causes an axial dimension A. (Fig. 3) for the bridging of the above-mentioned intermediate space between the pump impeller and a wall area with fluid connections. This wall area can be such a z. B. a boiler. Which axial dimension A is selected in each case depends from the boiler types. This Axialmaß can also from the Impeller-side housing part of the motor pump types, for others Liquid leading facilities, eg. B. piping systems used will depend.

Wie bereits erwähnt, kann die Motorpumpe auch ohne den Adapter 3 an der jeweiligen Flüssigkeit führenden Einrichtung oder in Verbindung mit ihrem laufradseitigen Gehäuseteil verwendet werden. Der Adapter 3 ist der Motorpumpe im Regelfall als loses Zusatzteil beigefügt, so dass am Montageort der Motorpumpe entschieden werden kann, ob der Adapter an dem Pumpenlaufrad 3 verwendet werden muss.As already mentioned, the motor pump without the adapter. 3 at the respective liquid-conducting device or in conjunction be used with their impeller-side housing part. The adapter 3, the motor pump is usually attached as a loose additional part, so that can be decided on the mounting location of the motor pump, whether the Adapter on the pump impeller 3 must be used.

In alternativer Ausführung des Adapters 3 kann dieser auch so ausgebildet sein, dass er nur in Form einer Ringscheibe besteht, d. h. ohne Ansatz 9. Die Ringscheibe ist dann bezüglich ihrer Dicke insgesamt im Wesentlichen so ausgebildet, dass das vorerwähnte Axialmaß A wenigstens im Saugmundbereich des Pumpenlaufrades gegeben ist.In an alternative embodiment of the adapter 3, this can also be formed be that it consists only in the form of an annular disk, d. H. without Approach 9. The annular disk is then in total in terms of their thickness Essentially designed so that the aforementioned axial dimension A at least given in the suction mouth of the pump impeller.

In noch weiterer alternativer Ausgestaltung des Adapters kann so vorgegangen sein, dass dieser praktisch nur als ringförmiger Ansatz ausgebildet ist. In dieser Form ist er vergleichbar mit dem vorgenannten ringförmigen Ansatz 9. Der Adapter 3 bildet dann eine Art nabenförmiges Bauteil.In still another alternative embodiment of the adapter can proceed as be that this formed practically only as a ring-shaped approach is. In this form it is comparable to the aforementioned annular Approach 9. The adapter 3 then forms a kind of hub-shaped Component.

Gemäß Fig. 3 ist das Pumpenlaufrad 2, das eine vordere Deckscheibe 2a aufweist, so an dem Rotor 1 befestigt, dass die an dieser Deckscheibe vorgesehenen Schaufeln 2b dem Rotor 1 zugekehrt sind. Diese Ausbildung und Anordnung des Pumpenlaufrades ist auch insofern zweckmäßig, als dass der Adapter 3 dann auf einfache Weise mittels der Klemmfinger 7 des Klemmringes 4 an der Deckscheibe 2a des Laufrades 2 befestigt werden kann (Fig. 3), an welcher er zentriert und unmittelbar anliegt.According to Fig. 3, the impeller 2, which is a front cover plate 2a, so attached to the rotor 1, that on this cover plate provided blades 2b facing the rotor 1. This training and arrangement of the pump impeller is also expedient in that than that the adapter 3 then easily by means of Clamping fingers 7 of the clamping ring 4 on the cover plate 2a of the impeller 2 can be attached (Fig. 3), at which it centers and immediately is applied.

Fig. 3 zeigt ein Pumpenlaufrad 2 mit vorderer Deckscheibe 2a. Altemativ ist es möglich, ein Pumpenlaufrad mit nur hinterer Deckschreibe zu verwenden, an dem die Schaufeln 2b integral vorhanden sind (nicht gezeigt), so dass das Pumpenlaufrad 2 auf seiner Vorderseite deckscheibenfrei ist. Der Adapter 3, der in diesem Fall die Form einer Ringscheibe mit oder ohne Ansatz 9 aufweist, liegt dann vorne an den Schaufeln eines solchen Pumpenlaufrades fest an, und zwar mit Hilfe des Klemmringes 4. Der Adapter übt auf diese Weise zwei Funktionen aus, nämlich seine Überbrückungsfunktion und zusätzlich die Funktion als vordere Deckscheibe.Fig. 3 shows a pump impeller 2 with front cover plate 2a. Alternatively it is possible to use a pump impeller with only a back cover letter use, on which the blades 2b are integral (not shown), so that the pump impeller 2 on its front side disc free is. The adapter 3, in this case the shape of an annular disc with or without approach 9, then lies on the front of the Shovels such a pump impeller firmly, with the help of the clamping ring 4. The adapter exercises in this way two functions namely, its bridging function and additionally the function as front cover disc.

In weiteren alternativen Ausbildungen kann das Laufrad 2 auch so ausgebildet sein, dass es in herkömmlicher Weise zwei Deckscheiben aufweist oder dass die Schaufeln einstückig mit dem Rotor 1 ausgebildet sind. Auch in diesen beiden Fällen wird der entsprechende Adapter an dem Pumpenlaufrad bzw. an den Schaufeln lösbar befestigt, z. B. mittels Klemmmitteln.In further alternative embodiments, the impeller 2 may also be formed in this way be that it has conventionally two shields or that the blades are formed integrally with the rotor 1 are. Also in these two cases, the appropriate adapter the pump impeller or on the blades releasably secured, z. B. by means Clamping means.

Wie bereits erwähnt, ist der Rotor 1 herkömmlicher Bauart und dem Fachmann daher allgemein bekannt. Der in Fig. 3 gezeigte Rotor 1 in Form eines teilkugelförmigen Permanentmagnetrotors ist daher nur kurz erläutert.As already mentioned, the rotor 1 of conventional design and the The skilled person is therefore generally known. The rotor 1 shown in FIG Form of a part-spherical permanent magnet rotor is therefore only short explained.

Der in Fig. 3 gezeigte Rotor 1 weist einen rotationssymmetrischen Träger 10 auf, an dessen einer Seite das Pumpenlaufrad 2 mit dem Adapter 3 befestigt ist. Der Träger 10 besteht im Wesentlichen aus einem scheibenförmigen Körper 10a mit einem rückwärtigen, zylindrischen Fortsatz 10b. Ein teilkugelförmiger Schalenmagnetkörper 11 ist mittels eines dünnen Mantels 12 an dem Scheibenkörper 10a und dem Fortsatz 10b befestigt. Im Zentrum des Scheibenkörpers 10a bzw. des Rotors 1 ist auf der dem Fortsatz 10b zugekehrten Seite ein Lagerkörper 13 vorgesehen, der mittels einer Buchse 14 in Position gehalten wird. Ein Axialkanal 15, der den Scheibenkörper 10a von der Laufradseite in Richtung zum Fortsatz 10b durchdringt, sorgt im Betrieb des Rotors 1 für einen axialen Kräfteausgleich an dem Rotor. Der Mantel 12 kann wie gezeigt auch so ausgebildet sein, dass er auch das Pumpenlaufrad 2, das einen Haltering 2 c aufweist, unmittelbar an dem Träger 10 klemmend befestigt, wie Fig. 3 zeigt. The rotor 1 shown in FIG. 3 has a rotationally symmetrical carrier 10, on one side of the pump impeller 2 with the adapter. 3 is attached. The carrier 10 consists essentially of a disc-shaped Body 10a with a rear, cylindrical extension 10b. A part-spherical shell magnetic body 11 is by means of a thin Mantels 12 attached to the disk body 10a and the extension 10b. In the center of the disk body 10a and the rotor 1 is on the the extension 10b facing side a bearing body 13 is provided, the is held in position by means of a bushing 14. An axial channel 15, the the disk body 10a of the impeller side toward the extension 10b penetrates, ensures in the operation of the rotor 1 for an axial balance of forces on the rotor. The jacket 12 can also be formed as shown be that he also the pump impeller 2, a retaining ring. 2 c, directly attached to the carrier 10 by clamping, as shown in FIG. 3 shows.

In Fig. 4 ist eine teilweise dargestellte Motorpumpe 18 gezeigt. Dargestellt sind im Wesentlichen ein saugseitiges Gehäuseteil 19 der Motorpumpe 18 mit dem Saugstutzen 20 und dem Druckstutzen 21, der Rotor 1 mit dem daran befestigten Pumpenlaufrad 2 und dem an diesem Pumpenlaufrad angeklemmten Adapter 3 sowie eine Trageinrichtung 22 mit einer zentralen, sich axial in den Rotor 1 hineinerstreckenden Stütze 23. Am inneren Ende dieser Stütze ist ein feststehender Kugelkopf 24 angeordnet, der in den Lagerkörper 13 eingreift. Der Kugelkopf 24 und der Lagerkörper 13 bilden eine bewegliche Drehlagerung für den Permanentmagnetrotor 1, derart, dass sich dieser Rotor neben seiner Rotation zusätzlich selbst einstellend ausrichten kann, um eine einwandfreie rotierende Betriebseinstellung einnehmen zu können.In Fig. 4, a partially illustrated motor pump 18 is shown. shown are essentially a suction-side housing part 19 of the motor pump 18 with the suction nozzle 20 and the discharge nozzle 21, the rotor 1 with the attached impeller 2 and the at this Pump impeller clamped adapter 3 and a support device 22 with a central, hineinerstreckigem axially into the rotor 1 Support 23. At the inner end of this support is a fixed ball head 24, which engages in the bearing body 13. The ball head 24 and the bearing body 13 form a movable pivot bearing for the Permanent magnet rotor 1, such that this rotor in addition to his Rotation in addition to self-adjusting can align to a flawless to be able to assume a rotating operating setting.

Das Gehäuseteil 19, dessen Stutzen 20 und 21 an Flüssigkeit führende Rohrleitungen anschließbar sind, ist mit einem Einlass 25, der mit dem Saugstutzen 20 kommuniziert, und mit einem Auslass 26, der mit dem Druckstutzen 21 kommuniziert, versehen. Dieses Gehäuseteil hat einen inneren Wandbereich 27, der zum Pumpenlaufrad 2 einen größeren axialen Abstand aufweist. Deshalb ist das Pumpenlaufrad mit einem Adapter 3 versehen, um den axialen Zwischenraum zwischen diesem Wandbereich 27 und dem Pumpenlaufrad 2 zwecks Gewährleistung, guter Strömungsverhältnisse und eines guten Wirkungsgrades im Saugmundbereich des Pumpenlaufrades zu überbrücken. Bei Stillstand des Rotors 1 wird sich dieser, bedingt durch seine Schwerpunktlage, um den Kugelkopf 24 neigen bzw. geneigt einstellen. Der Adapter 3 dient in diesem ruhenden Betriebszustand auch dazu, den Rotor 1 an dem Kugelkopf 24 abgestützt zu halten, indem der Adapter an dem Wandbereich 27 zur Anlage kommt, so dass der Rotor nicht von dem Kugelkopf abfällt. Der Rotor kann somit seine rotierende Betriebsfunktion beim Einschalten der Motorpumpe wieder sicher einnehmen. The housing part 19, the nozzle 20 and 21 leading to liquid Pipelines are connectable, with an inlet 25, which with the Suction port 20 communicates, and with an outlet 26, which communicates with the Pressure port 21 communicates, provided. This housing part has a inner wall portion 27, the pump impeller 2 a larger having axial distance. Therefore, the impeller is with a Adapter 3 provided to the axial gap between this Wall portion 27 and pump impeller 2 for the purpose of ensuring good flow conditions and a good efficiency in the suction mouth area to bridge the pump impeller. At standstill of Rotor 1 will this, due to its center of gravity, to the Tilt ball head 24 or inclined. The adapter 3 is used in this dormant operating condition also to the rotor 1 on the ball head 24 to keep supported by the adapter on the wall area 27 comes to the plant, so that the rotor does not fall off the ball head. The rotor can thus its rotating operating function when switching take the motor pump again safely.

Wird der in Fig. 4 nur teilweise gezeigte Kopf der Motorpumpe 18 wegen eines Defektes der Motorpumpe ausgetauscht, so wird dieser Kopf von dem Gewinde 19a des mit Flüssigkeit führenden Rohleitungen verbunden bleibenden Pumpengehäuses 19 abgeschraubt und durch einen neuen Motorpumpenkopf ersetzt. Wenn beispielsweise der Rotor 1 und/oder das daran befestigte Pumpenlaufrad 2 dieses neuen Kopfes eine größere axiale Abmessung aufweisen bzw. aufweist, wird der Adapter 3 nicht benötigt und daher nicht an dem Pumpenlaufrad 2 montiert. Das Pumpenlaufrad befindet sich dann mit seinem Saugmund in üblicher Weise nahe dem Wandbereich 27 des Pumpengehäuseteiles 19. Im umgekehrten Auswechselfall gilt Entsprechendes, d. h. ein Adapter 3 muss an dem Pumpenlaufrad 2 des neuen Motorpumpenkopfes montiert werden. Bei der in Fig. 4 teilweise gezeigten Motorpumpe fehlen im Wesentlichen lediglich der elektrische Stator für den Rotationsbetrieb des Permanentmagnetrotors 1 und das Motorgehäuse, das auf das Pumpengehäuseteil 19 an dessen Gewinde 19a aufgeschraubt wird.Will the only partially shown in Fig. 4 head of the motor pump 18 because replaced a defect of the motor pump, so this head from the thread 19a of the liquid-carrying pipes unscrewed pump housing 19 and unscrewed replaced a new motor pump head. For example, if the rotor 1 and / or the attached impeller 2 of this new head has a larger axial dimension, the adapter 3 not needed and therefore not on the impeller 2 assembled. The pump impeller is then located with its suction mouth in the usual way near the wall portion 27 of the pump housing part 19. In the case of reverse substitution, the same applies, d. H. one Adapter 3 must be fitted on pump impeller 2 of the new motor pump head to be assembled. In the motor pump partially shown in Fig. 4 Essentially, only the electric stator is missing for the Rotational operation of the permanent magnet rotor 1 and the motor housing, screwed onto the pump housing part 19 at its thread 19a becomes.

Der in dieser Beschreibung verwendete Begriff Motorpumpe ist so zu verstehen, dass auch der vorerwähnte Motorpumpenkopf allein, der im Wesentlichen den Rotor 1 mit dem Pumpenlaufrad 2 und dem Adapter 3, den elektrischen Stator und das auf das Gewinde 19a des Pumpengehäuseteiles 19 aufschraubbare Motorgehäuse (beides nicht gezeigt) enthält, davon erfasst ist. In dieser Ausführung wird die Motorpumpe zum Beispiel an einem Heizkessel verwendet. In erweiteter Ausführungsform kann die Motorpumpe das vorerwähnte Motorpumpengehäuseteil 19 zusätzlich enthalten. In dieser Ausführungsform wird die Motorpumpe vorzugsweise in ein Rohrleitungssystem eingebaut. In einem Defektfall der Motorpumpe wird das Gehäuseteil 19 jedoch nicht von dem Rohrleitungssystem demontiert, sondern es wird lediglich der vorstehend erläuterte Motorpumpenkopf von dem Gehäuseteil 19 demontiert und durch einen neuen Motorpumpenkopf ersetzt, bei dem das Pumpenlaufrad des Rotors in bauartbedingter Abhängigkeit des neuen Motorpumpenkopfes mit einem Adapter 3 versehen werden muss oder nicht.The term motor pump used in this description is so too understand that even the aforementioned motor pump head alone, in the Essentially the rotor 1 with the pump impeller 2 and the adapter 3, the electric stator and the thread 19a of the pump housing part 19 screw-on motor housing (both not shown) contains, of which is included. In this embodiment, the motor pump for example, used on a boiler. In an expanded embodiment For example, the motor pump may be the aforementioned motor pump housing part 19 additionally included. In this embodiment, the motor pump preferably installed in a piping system. In a defect case However, the motor pump, the housing part 19 is not of the Piping dismantled, but it is only the above explained motor pump head disassembled from the housing part 19 and replaced by a new motor pump head, in which the pump impeller of the rotor in design-related dependence of the new motor pump head must be provided with an adapter 3 or not.

Claims (10)

  1. A motor pump, containing a housing, an electric motor arranged in the housing, said motor comprising a stator and a rotor (1), and a pump impeller (2) with several blades (2b) which is connected to the rotor in a rotationally fixed manner, lies freely opposite a wall region comprising fluid connections in the assembled condition of the motor pump and cooperates with fluid connections, characterised in that for the pump impeller (2) at least one annular adapter (3) is provided which may be releasably fastened on the suction side of the pump impeller, for bridging an intermediate space between the pump impeller (2) and the wall region with the fluid connections, which lies opposite this pump impeller on the suction side.
  2. A motor pump according to claim 1, characterised in that the adapter (3) is designed in the form of an annular disk (8) with an annular projection (9) which is provided on that side of this annular disk which is distant to the pump impeller (2).
  3. A motor pump according to claim 1, characterised in that the adapter (3) is designed in the form of an annular disk.
  4. A motor pump according to claim 1, characterised in that the adapter (3) is designed in the form of a hub-like component.
  5. A motor pump according to claim 2 or 3, characterised in that the front side of the pump impeller (2) is designed free of a cover disk and that the annular-disk-shaped adapter (3) at the front firmly bears on the blades (2a) of the pump impeller (2) in an additional function as a front cover disk.
  6. A motor pump according to one of the claims 1 to 5, characterised in that the adapter (3) is fastened on the pump impeller (2) with a frictional positive fit by way of a clamping ring (4).
  7. A motor pump according to claim 6, characterised in that the clamping ring (4) is arranged sunk in the adapter (3).
  8. A motor pump according to claim 6 or 7, characterised in that the clamping ring (4) is arranged on the adapter (3) in a captive manner.
  9. A motor pump according to one of the claims 1 to 8, characterised in that the rotor (1) is a part-spherical permanent magnet rotor on which the pump impeller (2) connectable to the adapter (3) is directly fastened and which in its centre is mounted on a stationary ball head (24) in a self-adjusting movable manner.
  10. A motor pump according to one of the claims 2 to 9, characterised in that a set of several adapters (3) is provided whose axial dimension in their suction port region is different to one another for bridging axially differently large intermediate spaces.
EP03006417A 2003-03-21 2003-03-21 Motor pump Expired - Lifetime EP1460275B1 (en)

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Application Number Priority Date Filing Date Title
EP03006417A EP1460275B1 (en) 2003-03-21 2003-03-21 Motor pump
DE50300854T DE50300854D1 (en) 2003-03-21 2003-03-21 motor pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03006417A EP1460275B1 (en) 2003-03-21 2003-03-21 Motor pump

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EP1460275B1 true EP1460275B1 (en) 2005-07-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105756953A (en) * 2016-04-22 2016-07-13 汪普军 Computer water-cooling pump

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160061213A1 (en) * 2013-04-10 2016-03-03 Weir Minerals Australia Ltd Pump Impeller

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB730459A (en) * 1953-10-16 1955-05-25 Hathaway Ltd L High pressure pumping unit for fire-fighting purposes
AT333904B (en) * 1971-10-07 1976-12-27 Vortex Pumpen Ag REACTOR TANK, IN PARTICULAR FOR BOILING WATER REACTORS
US4043706A (en) * 1973-06-05 1977-08-23 Alan John Walker Bearing support structure for electro-magnet driven pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105756953A (en) * 2016-04-22 2016-07-13 汪普军 Computer water-cooling pump
CN105756953B (en) * 2016-04-22 2018-08-10 汪普军 A kind of computer water cooling pump

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DE50300854D1 (en) 2005-09-01

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