EP2188534A1 - Rotor mounting - Google Patents

Rotor mounting

Info

Publication number
EP2188534A1
EP2188534A1 EP08801957A EP08801957A EP2188534A1 EP 2188534 A1 EP2188534 A1 EP 2188534A1 EP 08801957 A EP08801957 A EP 08801957A EP 08801957 A EP08801957 A EP 08801957A EP 2188534 A1 EP2188534 A1 EP 2188534A1
Authority
EP
European Patent Office
Prior art keywords
shaft
impeller
shaft end
central bore
hub
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
EP08801957A
Other languages
German (de)
French (fr)
Other versions
EP2188534B1 (en
Inventor
Christoph Jäger
Rolf Witzel
Heinrich Braun
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.)
KSB SE and Co KGaA
Original Assignee
KSB 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 KSB AG filed Critical KSB AG
Publication of EP2188534A1 publication Critical patent/EP2188534A1/en
Application granted granted Critical
Publication of EP2188534B1 publication Critical patent/EP2188534B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts

Definitions

  • the invention relates to an impeller fastening at one end of a shaft, in particular a shaft end of a centrifugal pump unit, wherein at the shaft end a mating surface and at least one contact surface or a conical surface are formed, wherein an impeller hub at least at its shaft end facing with a central bore Internal thread is provided and secured by threaded connection at the shaft end.
  • the invention is therefore an object of the invention to provide an impeller fastening ung, which is inexpensive to produce, allows easy assembly and disassembly of the impeller and has very good round and flat running properties.
  • the shaft at least at its end facing the impeller hub has a central bore with internal thread that a trained as a separate component threaded pin in both central bores connecting and torque and force transmitting is arranged and that the impeller hub on the Pass and contact surfaces is aligned on the shaft.
  • the threaded pin acts as a kind of joint, whereby only the mating and contact surfaces ensure concentricity and axial runout accuracy. This also allows operation of such an impeller with very high speeds, which is advantageous for speed-controlled centrifugal pump units.
  • the power transmission or torque transmission is provided solely by the threaded pin, the concentricity of the shaft solely by centering on the mating surface and the axial runout through the contact surfaces.
  • An embodiment of the invention provides that at the shaft end a cylindrical centering surface and an axial bearing surface are formed. On these surfaces is an impeller hub in the assembled state and is thereby aligned with the shaft.
  • an axial extent of the cylindrical centering surface is equal to or greater than the diameter thereof. This is a sufficiently large
  • an impeller mounting is provided with a conical surface arranged at one end of a shaft, wherein the shaft has a central bore with internal thread at least at its end facing the impeller hub, connecting a threaded pin designed as a separate component in both central bores, transmitting torque and force and the Impeller hub exclusively on the conical surface, which forms both mating and contact surface, is aligned with the shaft.
  • Such impeller attachment offers advantages in manufacturing due to the reduced number of surfaces to be machined.
  • the threaded pin is provided at least one end with a tool holder. As a result, this can be brought, for example, in a simple manner in its mounting position within the central bore.
  • Fig. 1 is an impeller mounting according to the prior art
  • FIG. 1 shows a detail of a centrifugal pump assembly and a wheel mounting according to the prior art. For the sake of clarity, only the relevant parts for a wheel mounting are shown.
  • a shaft end 5 for example, a shaft einti & Bi ⁇ ckmotors, has a Uewindestumpf 6 with external thread.
  • the shaft end 5 has a cylindrical mating surface 7 and a radial contact surface 8.
  • the impeller 1 is screwed with its impeller hub 2 on the threaded stub 6 of the shaft end 5. Due to manufacturing tolerances, this solution has the disadvantage that the thread 4 causes during assembly of the impeller hub 2 on the shaft end 5 a tilting of the impeller hub 2 relative to the shaft.
  • the consequences are insufficient concentricity properties and / or run-flat properties of the shaft and Impeller 1.
  • Fig. 2 shows an impeller attachment according to the invention.
  • An impeller 11 has an impeller hub 12 with a central bore 13 and an internal thread 14. Furthermore, a shaft end 15 is shown.
  • the shaft end 15 has a hollow shaft 16 with internal thread 17.
  • a threaded pin 18 which is screwed into the central bore 16 during assembly.
  • the tool holder 19 which can be designed, for example, as a hexagon socket, slot or key surface, it can be screwed into the central bore 16 with conventional tools.
  • the impeller hub 12 is a cylindrical mating surface 20 for pre-centering. This fitting or centering surface 20 is designed such that good concentricity and during operation of an aggregate good concentricity properties are achieved during assembly.
  • the threaded pin 18 can move loosely and the fit or alignment of the impeller is done only via the designated fitting surface 20 and the contact surface 21st
  • the threaded pin 18 which is arranged to connect in both central bores 13, 16, as a separate component, decoupling within the impeller is achieved.
  • the threaded pin 18 fulfills the function of a torque or power transmission.
  • the alignment of the impeller hub takes place exclusively via the mating surface 20 and the contact surface 21.
  • the mating surface 20 ensures the concentricity properties and the contact surface 21 the axial runout properties of the arrangement. This leads to very good concentricity and axial runout properties.
  • the decoupled thread can no longer tilt the wheel to be fastened 11 relative to the shaft. This also allows operation of such an impeller 11 at very high speeds, which is advantageous for speed-controlled centrifugal pump units.
  • Fig. 3 shows another impeller mounting according to the invention with impeller 31, an impeller hub 32 and a through-drilled through the impeller central bore 33.
  • a shaft end 34 also has a central bore 36.
  • the shaft end 34 is provided with a conical surface 35.
  • the conical surface 35 forms simultaneously investment as well as mating surface and offers the added advantage of ease of manufacture.

Abstract

The invention relates to a rotor mounting on one end of a shaft, particularly a shaft end of a centrifugal pump unit. An adjusting surface and at least one contact surface are designed on the shaft end, wherein a rotor hub is provided at least on the end thereof facing the shaft with a central bore having an interior thread, said rotor hub being attached to the shaft end by a screw connection. The shaft has a central bore (16) having an interior thread (17) at least on the end thereof facing the rotor hub (12), a threaded pin (18) embodied as a separate component is disposed in both central bores (13, 16) in a connecting, torque-transmitting, and force-transmitting manner, and the rotor hub (12) is aligned on the shaft exclusively via the adjusting (20) and contact surfaces (21).

Description

K S B A k t i e n g e s e l l s c h a f t K S B A k t i e n g e s e n c e s a t e
Laufradbefestigungwheelmounting
Beschreibungdescription
Die Erfindung betrifft eine Laufrad befestig ung an einem Ende einer Welle, insbesondere einem Wellenende eines Kreiselpumpenaggregates, wobei am Wellenende eine Pass- fläche und mindestens eine Anlagefläche oder eine Kegelfläche ausgebildet sind, wobei eine Laufradnabe wenigstens an ihrem der Welle zugewandten Ende mit einer Mittelbohrung mit Innengewinde versehen ist und mittels Gewindeverschraubung am Wellenende befestigt ist.The invention relates to an impeller fastening at one end of a shaft, in particular a shaft end of a centrifugal pump unit, wherein at the shaft end a mating surface and at least one contact surface or a conical surface are formed, wherein an impeller hub at least at its shaft end facing with a central bore Internal thread is provided and secured by threaded connection at the shaft end.
Es ist bekannt, Laufräder von aus Pumpe und Motor bestehenden Kreiselpumpenaggregaten an einem mit einem Gewindestumpf ausgeführten Wellenende des Motors aufzuschrauben. Dabei weist das Wellenende eine oder mehrere zylindrische Passflächen und ein oder mehrere axiale Anlageflächen auf. Bei der Montage eines Laufrades auf ein solches Wellenende wird die Laufradnabe auf den Gewindestumpf aufge- schraubt. Bedingt durch Fertigungstoleranzen weist eine solche Lösung den Nachteil auf, dass das Gewinde bei der Montage der Laufradnabe auf das Wellenende eine Verkantung der Laufradnabe gegenüber der Welle verursacht. Die Folgen sind unzureichende Rundlaufeigenschaften und/oder Planlaufeigenschaften der zu fügenden Teile. Zusätzlich besteht die Gefahr eines Festfressens bei Gewinde und Anlageflächen, wo- durch eine eventuelle Demontage der Anordnung erschwert ist.It is known to unscrew wheels of existing pump and motor centrifugal pump units on a running with a threaded stem shaft end of the engine. In this case, the shaft end has one or more cylindrical mating surfaces and one or more axial abutment surfaces. When mounting an impeller on such a shaft end, the impeller hub is screwed onto the threaded stub. Due to manufacturing tolerances, such a solution has the disadvantage that the thread causes a tilting of the impeller hub relative to the shaft during assembly of the impeller hub on the shaft end. The consequences are insufficient concentricity properties and / or run-out properties of the parts to be joined. In addition, there is the risk of seizure in the case of threads and contact surfaces, which makes it difficult to dismantle the arrangement.
Der Erfindung liegt somit die Aufgabe zugrunde, eine Laufrad befestig ung zu schaffen, die wenig aufwändig herstellbar ist, eine leichte Montage und Demontage des Laufrades ermöglicht sowie sehr gute Rund- und Planlaufeigenschaften aufweist.The invention is therefore an object of the invention to provide an impeller fastening ung, which is inexpensive to produce, allows easy assembly and disassembly of the impeller and has very good round and flat running properties.
Die Lösung des Problems sieht vor, dass die Welle wenigstens an ihrem der Laufradnabe zugewandten Ende eine Mittelbohrung mit Innengewinde aufweist, dass ein als separates Bauteil ausgebildeter Gewindestift in beiden Mittelbohrungen verbindend und drehmoment- und kräfteübertragend angeordnet ist und dass die Laufradnabe über die Pass- und Anlageflächen an der Welle ausgerichtet ist. Dies führt zu sehr guten Rundlauf- und Planlaufeigenschaften. In Folge des in Nabe- und Wellenende mittig angeordneten Gewindestiftes und den Toleranzen in den Gewindegängen, können beim Anziehen der Verbindung die entkoppelten Gewinde ein zu fügendes Laufrad nicht mehr ge- genüber der Welle verkanten. Der Gewindestift wirkt als eine Art von Gelenk, wodurch ausschließlich die Pass- und Anlageflächen eine Rundlauf- und Planlaufgenauigkeit gewährleisten. Dies ermöglicht auch einen Betrieb eines solchen Laufrades mit sehr hohen Drehzahlen, welches vorteilhaft für drehzahlgeregelte Kreiselpumpenaggregate ist.The solution to the problem provides that the shaft at least at its end facing the impeller hub has a central bore with internal thread that a trained as a separate component threaded pin in both central bores connecting and torque and force transmitting is arranged and that the impeller hub on the Pass and contact surfaces is aligned on the shaft. This leads to very good concentricity and axial runout properties. As a result of the central threaded pin in the hub and shaft end and the tolerances in the threads, when the connection is tightened, the decoupled threads can no longer tilt an impeller to be joined relative to the shaft. The threaded pin acts as a kind of joint, whereby only the mating and contact surfaces ensure concentricity and axial runout accuracy. This also allows operation of such an impeller with very high speeds, which is advantageous for speed-controlled centrifugal pump units.
Gleichzeitig ist ein Fressen des Gewindes oder der Anlageflächen wirksam verhindert, was auch eine leichte Demontage der Anordnung ermöglicht. Durch den zusätzlichen Freiheitsgrad des Gewindes durch den separaten Gewindestift ist die Möglichkeit geschaffen, dass sich das kräfteübertragende Verbindungsmittel in Form des Gewindestif- tes den Gegebenheiten der Pass- und Anlageflächen anpasst. Somit ist die Kraftübertragung bzw. Drehmomentübertragung allein durch den Gewindestift, die Rundlaufeigenschaften der Welle allein durch die Zentrierung über die Passfläche und die Planlaufeigenschaft durch die Anlageflächen gegeben.At the same time a seizure of the thread or the contact surfaces is effectively prevented, which also allows easy disassembly of the arrangement. The additional degree of freedom of the thread through the separate threaded pin creates the possibility that the force-transmitting connecting means in the form of the threaded rod adapts to the conditions of the fitting and contact surfaces. Thus, the power transmission or torque transmission is provided solely by the threaded pin, the concentricity of the shaft solely by centering on the mating surface and the axial runout through the contact surfaces.
Eine Ausgestaltung der Erfindung sieht vor, dass am Wellenende eine zylindrische Zentrierfläche und eine axiale Anlagefläche ausgebildet sind. An diesen Flächen liegt eine Laufradnabe in montiertem Zustand an und ist dadurch an der Welle ausgerichtet.An embodiment of the invention provides that at the shaft end a cylindrical centering surface and an axial bearing surface are formed. On these surfaces is an impeller hub in the assembled state and is thereby aligned with the shaft.
Dabei ist es von Vorteil, wenn eine axiale Erstreckung der zylindrischen Zentrierfläche gleich oder größer als deren Durchmesser ist. Dadurch ist eine ausreichend großeIt is advantageous if an axial extent of the cylindrical centering surface is equal to or greater than the diameter thereof. This is a sufficiently large
Passfläche geschaffen. Während einer Montage des Kreiselpumpenaggregates ist das Läufi äu über die zylindrische Zentrierfläche am Wellenende vorzentrierbar.Passport created. During assembly of the centrifugal pump assembly, the Läufi Äu is pre-centered on the cylindrical centering at the shaft end.
Eine andere Ausgestaltung sieht vor, dass die Mittelbohrung der Nabe und/oder die Mit- telbohrung des Wellenendes als ein Sackloch ausgeführt ist. Damit ist das Gewinde gegen Eindringen von Förderflüssigkeit geschützt. Alternativ ist eine Laufradbefestigung mit einer an einem Ende einer Welle angeordneten Kegelfläche vorgesehen, wobei die Welle wenigstens an ihrem der Laufradnabe zugewandten Ende eine Mittelbohrung mit Innengewinde aufweist, ein als separates Bauteil ausgebildeter Gewindestift in beiden Mittelbohrungen verbindend, drehmoment- und kräfteübertragend angeordnet ist und die Laufradnabe ausschließlich über die Kegelfläche, die sowohl Pass- als auch Anlagefläche bildet, an der Welle ausgerichtet ist. Eine solche Laufradbefestigung bietet aufgrund der geringeren Anzahl von zu bearbeitenden Flächen Vorteile bei der Herstellung.Another embodiment provides that the central bore of the hub and / or the middle bore of the shaft end is designed as a blind hole. Thus, the thread is protected against penetration of pumped liquid. Alternatively, an impeller mounting is provided with a conical surface arranged at one end of a shaft, wherein the shaft has a central bore with internal thread at least at its end facing the impeller hub, connecting a threaded pin designed as a separate component in both central bores, transmitting torque and force and the Impeller hub exclusively on the conical surface, which forms both mating and contact surface, is aligned with the shaft. Such impeller attachment offers advantages in manufacturing due to the reduced number of surfaces to be machined.
Zusätzlich ist vorgesehen, dass der Gewindestift an mindestens einem Ende mit einer Werkzeugaufnahme versehen ist. Dadurch kann dieser beispielsweise auf einfache Art und Weise in seine Montageposition innerhalb der Mittelbohrung gebracht werden.In addition, it is provided that the threaded pin is provided at least one end with a tool holder. As a result, this can be brought, for example, in a simple manner in its mounting position within the central bore.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher beschrieben. Es zeigen die fEmbodiments of the invention are illustrated in the drawings and will be described in more detail below. The f
Fig. 1 eine Laufradbefestigung nach dem Stand der Technik und dieFig. 1 is an impeller mounting according to the prior art and the
Fig. 2 & 3 erfindungsgemäße, entkoppelte Laufradbefestigungen.Fig. 2 & 3 according to the invention, decoupled impeller fasteners.
Die Fig. 1 zeigt einen Ausschnitt eines Kreiselpumpenaggregats und einer Laufradbefestigung gemäß dem Stand der Technik. Der Übersichtlichkeit halber sind nur die für eine Laufradbefestigung relevanten Teile dargestellt.FIG. 1 shows a detail of a centrifugal pump assembly and a wheel mounting according to the prior art. For the sake of clarity, only the relevant parts for a wheel mounting are shown.
Gezeigt ist ein Laufrad 1 mit einer Laufradnabe 2 und einer - hier als Sackloch ausgeführten - Mittelbohrung 3 mit Innengewinde 4. Ein Wellenende 5, beispielsweise einer Welle einti& Biυckmotors, weist einen Uewindestumpf 6 mit Außengewinde auf. Das Wellenende 5 besitzt eine zylindrische Passfläche 7 und eine radiale Anlagefläche 8. Das Laufrad 1 ist mit seiner Laufradnabe 2 auf den Gewindestumpf 6 des Wellenendes 5 aufgeschraubt. Bedingt durch Fertigungstoleranzen weist diese Lösung den Nachteil auf, dass das Gewinde 4 bei der Montage der Laufradnabe 2 auf das Wellenende 5 eine Verkantung der Laufradnabe 2 gegenüber der Welle verursacht. Die Folgen sind unzureichende Rundlaufeigenschaften und/oder Planlaufeigenschaften von Welle und Laufrad 1. Zusätzlich besteht die Gefahr eines Festfressens bei den Gewinden und an der Anlagefläche 8, wodurch eine eventuelle Demontage der Anordnung erschwert ist.Shown is an impeller 1 with an impeller hub 2 and a - executed here as a blind hole - center hole 3 with internal thread 4. A shaft end 5, for example, a shaft einti & Biυckmotors, has a Uewindestumpf 6 with external thread. The shaft end 5 has a cylindrical mating surface 7 and a radial contact surface 8. The impeller 1 is screwed with its impeller hub 2 on the threaded stub 6 of the shaft end 5. Due to manufacturing tolerances, this solution has the disadvantage that the thread 4 causes during assembly of the impeller hub 2 on the shaft end 5 a tilting of the impeller hub 2 relative to the shaft. The consequences are insufficient concentricity properties and / or run-flat properties of the shaft and Impeller 1. In addition, there is a risk of seizure in the threads and on the contact surface 8, whereby a possible dismantling of the arrangement is difficult.
Die Fig. 2 zeigt eine erfindungsgemäße Laufradbefestigung. Ein Laufrad 11 weist eine Laufradnabe 12 mit einer Mittelbohrung 13 und einem Innengewinde 14 auf. Weiterhin ist ein Wellenende 15 dargestellt. Das Wellenende 15 weist eine Hohlwelle 16 mit Innengewinde 17 auf. Zur Befestigung des Laufrades 11 am Wellenende 15 dient ein Gewindestift 18, der bei der Montage in die Mittelbohrung 16 eingeschraubt wird. Durch die Werkzeugaufnahme 19, die beispielsweise als Innensechskant, Schlitz oder Schlüs- seifläche ausgebildet sein kann, ist er mit üblichen Werkzeugen in die Mittelbohrung 16 einschraubbar. Bei der Montage der Laufradnabe 12 dient eine zylindrische Passfläche 20 zur Vorzentrierung. Diese Pass- oder Zentrierfläche 20 ist derart gestaltet, dass bei der Montage eine gute Vorzentrierung sowie während eines Betriebs eines Aggregates gute Rundlaufeigenschaften erreicht werden. Der Gewindestift 18 kann sich lose bewegen und die Einpassung oder Ausrichtung des Laufrades geschieht lediglich über die dafür vorgesehene Passfläche 20 bzw. die Anlagefläche 21.Fig. 2 shows an impeller attachment according to the invention. An impeller 11 has an impeller hub 12 with a central bore 13 and an internal thread 14. Furthermore, a shaft end 15 is shown. The shaft end 15 has a hollow shaft 16 with internal thread 17. For attachment of the impeller 11 at the shaft end 15 is a threaded pin 18 which is screwed into the central bore 16 during assembly. By means of the tool holder 19, which can be designed, for example, as a hexagon socket, slot or key surface, it can be screwed into the central bore 16 with conventional tools. When mounting the impeller hub 12 is a cylindrical mating surface 20 for pre-centering. This fitting or centering surface 20 is designed such that good concentricity and during operation of an aggregate good concentricity properties are achieved during assembly. The threaded pin 18 can move loosely and the fit or alignment of the impeller is done only via the designated fitting surface 20 and the contact surface 21st
Durch die Ausbildung des Gewindestifts 18, der in beiden Mittelbohrungen 13, 16 verbindend angeordnet ist, als separates Bauteil wird eine Entkopplung innerhalb der Lauf- rad befestig u ng erreicht. Dabei erfüllt der Gewindestift 18 die Funktion einer Drehmoment- bzw. Kraftübertragung. Die Ausrichtung der Laufradnabe erfolgt ausschließlich über die Passfläche 20 und die Anlagefläche 21. Dabei gewährleistet die Passfläche 20 die Rundlaufeigenschaften und die Anlagefläche 21 die Planlaufeigenschaften der Anordnung. Dies führt zu sehr guten Rundlauf- und Planlaufeigenschaften. In Folge des in Laufradnabe- und Wellenende mittig angeordneten Gewindestiftes 18 und den Toleranzen in den Gewindegängen, können beim Anziehen der Verbindung die entkoppelten Gewinde das zu befestigende Laufrad 11 nicht mehr gegenüber der Welle verkanten. Dies ermöglicht auch einen Betrieb eines solchen Laufrades 11 mit sehr hohen Drehzahlen, welches vorteilhaft für drehzahlgeregelte Kreiselpumpenaggregate ist.Due to the design of the threaded pin 18, which is arranged to connect in both central bores 13, 16, as a separate component, decoupling within the impeller is achieved. In this case, the threaded pin 18 fulfills the function of a torque or power transmission. The alignment of the impeller hub takes place exclusively via the mating surface 20 and the contact surface 21. In this case, the mating surface 20 ensures the concentricity properties and the contact surface 21 the axial runout properties of the arrangement. This leads to very good concentricity and axial runout properties. As a result of centrally located in Laufradnabe- and shaft end threaded pin 18 and the tolerances in the threads, when tightening the connection, the decoupled thread can no longer tilt the wheel to be fastened 11 relative to the shaft. This also allows operation of such an impeller 11 at very high speeds, which is advantageous for speed-controlled centrifugal pump units.
Die Fig. 3 zeigt eine andere erfindungsgemäße Laufradbefestigung mit Laufrad 31 , einer Laufradnabe 32 und einer durch das Laufrad durchgebohrten Mittelbohrung 33. Ein Wellenende 34 weist ebenfalls eine Mittelbohrung 36 auf. Bei dieser Laufradbefestigung ist das Wellenende 34 mit einer Kegelfläche 35 ausgestattet. Die Kegelfläche 35 bildet gleichzeitig Anlage- als auch Passfläche aus und bietet den zusätzlichen Vorteil der einfachen Herstellung. Fig. 3 shows another impeller mounting according to the invention with impeller 31, an impeller hub 32 and a through-drilled through the impeller central bore 33. A shaft end 34 also has a central bore 36. In this impeller mounting the shaft end 34 is provided with a conical surface 35. The conical surface 35 forms simultaneously investment as well as mating surface and offers the added advantage of ease of manufacture.

Claims

Patentansprüche claims
1. Laufradbefestigung an einem Ende einer Welle, insbesondere einem Wellenende eines Kreiselpumpenaggregates, wobei am Wellenende eine Passfläche und mindestens eine Anlagefläche ausgebildet sind, wobei eine Laufradnabe wenigstens an ihrem der Welle zugewandten Ende mit einer Mittelbohrung mit Innengewinde versehen ist und mittels Gewindeverschraubung am Wellenende befestigt ist, dadurch gekennzeichnet, dass die Welle wenigstens an ihrem der Lauf- radnabe (12) zugewandten Ende eine Mittelbohrung (16) mit Innengewinde (17) aufweist, dass ein als separates Bauteil ausgebildeter Gewindestift (18) in beiden Mittelbohrungen (13, 16) verbindend, drehmoment- und kräfteübertragend angeordnet ist und dass die Laufradnabe (12) ausschließlich über die Pass- (20) und Anlageflächen (21) an der Welle ausgerichtet ist.1. impeller mounting at one end of a shaft, in particular a shaft end of a centrifugal pump assembly, wherein at the shaft end a mating surface and at least one contact surface are formed, wherein an impeller hub is provided at least at its end facing the shaft with a central bore with internal thread and secured by threaded connection at the shaft end characterized in that the shaft at least at its the wheel hub (12) facing the end has a central bore (16) with internal thread (17) that formed as a separate component threaded pin (18) in both central bores (13, 16) connecting, torque and power transmission is arranged and that the impeller hub (12) is aligned exclusively on the pass (20) and contact surfaces (21) on the shaft.
2. Laufradbefestigung nach Anspruch 1 , dadurch gekennzeichnet, dass am Wellenende (15) eine zylindrische Zentrierfläche (20) und eine axiale Anlagefläche (21) ausgebildet sind.Second impeller mounting according to claim 1, characterized in that at the shaft end (15) has a cylindrical centering surface (20) and an axial bearing surface (21) are formed.
3. Laufradbefestigung nach Anspruch 2, dadurch gekennzeichnet, dass eine axiale3. impeller mounting according to claim 2, characterized in that an axial
Erstreckung der zylindrischen Zentrierfläche (20) gleich oder größer als deren Durchmesser ist.Extension of the cylindrical centering surface (20) is equal to or greater than the diameter thereof.
4. La üffäd befestig üng nach 6in6m der Ansprüche 1 bis 3, dadurch gsksrinzeichnet, dass das Laufrad (11) während einer Montage des Kreiselpumpenaggregates über die zylindrische Zentrierfläche (20) am Wellenende (15) vorzentrierbar ist.4. La üffäd fastener according to ünin 6m of claims 1 to 3, characterized gsksrinzeichnet that the impeller (11) during assembly of the centrifugal pump assembly via the cylindrical centering surface (20) on the shaft end (15) is pre-centered.
5. Laufradbefestigung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Mittelbohrung (13) der Laufradnabe (12) und/oder die Mittelbohrung (16) des Wellenendes (15) als ein Sackloch ausgeführt ist. 5. impeller mounting according to one of claims 1 to 4, characterized in that the central bore (13) of the impeller hub (12) and / or the central bore (16) of the shaft end (15) is designed as a blind hole.
6. Laufradbefestigung an einem Ende einer Welle, insbesondere einem Wellenende eines Kreiselpumpenaggregates, wobei am Wellenende eine Anlagefläche als eine Kegelfläche ausgebildet ist, wobei eine Laufradnabe wenigstens an ihrem der Welle zugewandten Ende mit einer Mittelbohrung mit Innengewinde verse- hen ist und mittels Gewindeverschraubung am Wellenende befestigt ist, dadurch gekennzeichnet, dass die Welle wenigstens an ihrem der Laufradnabe (32) zugewandten Ende eine Mittelbohrung (36) mit Innengewinde aufweist, dass ein als separates Bauteil ausgebildeter Gewindestift (18) in beiden Mittelbohrungen (33, 36) verbindend, drehmoment- und kräfteübertragend angeordnet ist und dass die Laufradnabe (32) ausschließlich über die Kegelfläche (35), die sowohl Pass- als auch Anlagefläche bildet, an der Welle ausgerichtet ist.6. impeller mounting at one end of a shaft, in particular a shaft end of a centrifugal pump unit, wherein at the shaft end a contact surface is formed as a conical surface, wherein an impeller hub hen at least at its end facing the shaft with a central bore with internal thread hen- hen and by means of threaded connection at the shaft end is attached, characterized in that the shaft at least at its the impeller hub (32) facing the end has a central bore (36) with internal thread that a trained as a separate component threaded pin (18) in both central bores (33, 36) connecting, torque and is arranged to transmit force, and that the impeller hub (32) is aligned with the shaft exclusively via the conical surface (35) forming both the fitting and abutment surfaces.
7. Laufradbefestigung nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Gewindestift (18) an mindestens einem Ende mit einer Werkzeugaufnahme (19) versehen ist. 7. impeller mounting according to one or more of claims 1 to 6, characterized in that the threaded pin (18) is provided at least one end with a tool holder (19).
EP08801957.5A 2007-09-18 2008-09-10 Rotor mounting Not-in-force EP2188534B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007044646A DE102007044646A1 (en) 2007-09-18 2007-09-18 wheelmounting
PCT/EP2008/007385 WO2009036915A1 (en) 2007-09-18 2008-09-10 Rotor mounting

Publications (2)

Publication Number Publication Date
EP2188534A1 true EP2188534A1 (en) 2010-05-26
EP2188534B1 EP2188534B1 (en) 2018-04-18

Family

ID=40227714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08801957.5A Not-in-force EP2188534B1 (en) 2007-09-18 2008-09-10 Rotor mounting

Country Status (7)

Country Link
US (1) US8425189B2 (en)
EP (1) EP2188534B1 (en)
JP (2) JP5548128B2 (en)
DE (1) DE102007044646A1 (en)
DK (1) DK2188534T3 (en)
ES (1) ES2674083T3 (en)
WO (1) WO2009036915A1 (en)

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Also Published As

Publication number Publication date
US20100189567A1 (en) 2010-07-29
JP2010539381A (en) 2010-12-16
JP6185778B2 (en) 2017-08-23
US8425189B2 (en) 2013-04-23
JP5548128B2 (en) 2014-07-16
WO2009036915A1 (en) 2009-03-26
EP2188534B1 (en) 2018-04-18
JP2013241941A (en) 2013-12-05
DK2188534T3 (en) 2018-07-30
ES2674083T3 (en) 2018-06-27
DE102007044646A1 (en) 2009-03-26

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