EP1477683A2 - Canned motor pump - Google Patents

Canned motor pump Download PDF

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Publication number
EP1477683A2
EP1477683A2 EP04008290A EP04008290A EP1477683A2 EP 1477683 A2 EP1477683 A2 EP 1477683A2 EP 04008290 A EP04008290 A EP 04008290A EP 04008290 A EP04008290 A EP 04008290A EP 1477683 A2 EP1477683 A2 EP 1477683A2
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EP
European Patent Office
Prior art keywords
pump
canned motor
bearing
motor pump
shaft
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
EP04008290A
Other languages
German (de)
French (fr)
Other versions
EP1477683B1 (en
EP1477683A3 (en
Inventor
Ernst Graf
Jürgen Gröschel
Steffen Prager
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KSB AG
Original Assignee
KSB AG
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Publication date
Application filed by KSB AG filed Critical KSB AG
Priority to PL04008290T priority Critical patent/PL1477683T3/en
Priority to SI200431847T priority patent/SI1477683T1/en
Publication of EP1477683A2 publication Critical patent/EP1477683A2/en
Publication of EP1477683A3 publication Critical patent/EP1477683A3/en
Application granted granted Critical
Publication of EP1477683B1 publication Critical patent/EP1477683B1/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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0613—Special connection between the rotor compartments

Definitions

  • the invention relates to a canned motor pump with a rotor space upstream of the engine to prevent passage from in the liquid contained solids and a liquid circuit for Cooling the liquid present in the rotor space.
  • EP 0 438 466 B1 has also already disclosed a filter device which the problem of clogging or clogged by the fact that between the housing and the rotor shaft through a bushes made of hard material was formed limited filter gap, in which existing particles on a for the subsequent column harmless size were reduced.
  • the design according to the features a and b has the consequence that the of Centrifugal generated, centrifugally directed conveying effect due to the conical course of the space surrounding the centrifugal disc at the Wall causes a directed to the pump side flow, from the in the said space results in a continuous circulation flow.
  • Circulating flow is absorbed by solid particles passing through the impeller be recycled back into the directed to the pump outlet flow. This can be done with the aid of the surface roughness of the impeller or by means of Back scoops take place on the impeller.
  • the feature c additionally assumes the function of a lock that only has a very low fluid passage result.
  • a barrier against the passage of hot fluid into the rotor chamber is by a pump side arranged thrust bearing, which has a narrow radial gap With the housing surrounding the thrust bearing forms produced
  • a Ceramic plain bearing for the pump-side bearing of the shaft within the rotor space is a Ceramic plain bearing preferred, which on the one hand directly and on the other indirectly via arranged in the shaft holes through the rotor in the Canned motor pump fluid is lubricated.
  • centrifugal disc as a resilient element to train them for a biasing of the ceramic plain bearing toughen.
  • the centrifugal disc can consist of a single disc consist of or composed of several discs.
  • the canned motor pump shown in FIG. 1 consists essentially of a pump part 1 and a motor part 2.
  • Side of the motor part 2 is a Heat exchanger 3, with the engine part 2 via pipes 4 and 5 is connected, arranged.
  • a ceramic plain bearing arranged in the pressure-side housing cover 9 of the pump part 1 is a ceramic plain bearing arranged, which consists of a bearing bush 10, a motor-side thrust bearing 11, a pump-side thrust bearing 12 and a bearing sleeve 13 is made.
  • Impeller 14 On the From the pump part 1 side facing away from the thrust bearing 11 is a Impeller 14, through which in the rotor chamber 15 of the motor part 2 existing Moved liquid in a guided over the heat exchanger 3 circulation becomes.
  • the impeller has 7th on its side facing the pressure-side Radierraum 16 side Back vanes 17. These receive one in the direction of the pump outlet 18th pointing promotion upright and thus lead into the Radierraum sixteenth inflowing, admixed with admixtures conveying fluid again.
  • such support would be in a conventionally designed Radveragingraum the penetrated dirt particles only inadequate dissipate. It would be due to the prevailing flow conditions Enrichments of dirt, which are ultimately in the range of relative to each other Moving parts would lead to progressive abrasion. moreover Dirt particles could get into the rotor chamber 15.
  • An additional barrier against intrusion of remaining Solid particles in the rotor chamber 15 forms an axial gap 22 which is between the Slinger 19 and the housing cover 9 is present.
  • a radial gap 23 between the thrust bearing 12 and the housing cover 9 forms a barrier against fluid communication between the space 21 and the Rotor space 15, so protects the rotor space from contained in the pumped liquid Warmth.
  • promotional thread 24 on the rotating with the shaft 6 Thrust bearing 12 can be provided. Fig. 3 shows this feature.
  • the located in the rotor chamber 15, circulated by the impeller 14 liquid also serves to lubricate the thrust bearings 11 and 12 This happens on the one hand directly through the surrounding liquid, on the other hand are in the shaft. 6 Holes 27 are provided, the liquid to the thrust bearings 11 and 12 lead. About holes 28 and a groove 29, this liquid finally reaches the Sliding surfaces of the thrust bearings 11 and 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)

Abstract

The centrifugal pump (1) has a rotor (7) with curved blades, an axial inlet and a tangential outlet (18). There are additional narrow blades (17) on the flat back of the pump rotor to fling fluid away from the pump and motor (2) bearing (10). This bearing is a ceramic friction bearing with a pair of thrust bearings (11,12). There is a bearing ring (13) in contact with the motor shaft (6). The cooling system has a heat exchanger (3) with a pipe (5) feeding fluid into a central bore in the motor shaft. Fluid may circulate through the bearing and an impeller pump (14) on the bearing returns cooling fluid through a pipe (4) to the heat exchanger. A labyrinth seal and a slinger ring (19) prevent ingress of solid particles into the bearing and motor.

Description

Gegenstand der Erfindung ist eine Spaltrohrmotorpumpe mit einer dem Rotorraum des Motors vorgeschalteten Einrichtung zur Verhinderung eines Übertritts von in der Förderflüssigkeit enthaltenen Feststoffen und einem Flüssigkeitskreislauf zur Kühlung der im Rotorraum vorhandenen Flüssigkeit.The invention relates to a canned motor pump with a rotor space upstream of the engine to prevent passage from in the liquid contained solids and a liquid circuit for Cooling the liquid present in the rotor space.

Einrichtungen zur Verhinderung eines Übertritts von Feststoffen wurden bisher in der Art von Filtern ausgeführt. Das heißt, in den zwischen dem Pumpen- und dem Rotorraum vorhandenen ständigen Flüssigkeitsstrom wurden eine oder mehrere Engstellen geschaltet, die Verunreinigungen ab einer vorgegebenen Partikelgröße zurückhielten. Dies konnte beispielsweise mit Hilfe eines Siebes erfolgen. Allerdings hatte dies den Nachteil, daß der Filter sich nach einem von der Anzahl der Partikel abhängigen Zeitraum zusetzte und einen weiteren Durchlaß von Flüssigkeit verhinderte. Hieraus wiederum ergab sich eine Unterbrechung des Flüssigkeitsaustausches zwischen Pumpen- und Motorraum, so daß die im Spaltrohrmotor entstehende Wärme nicht abgeführt werden konnte.Facilities for preventing the transfer of solids have been used in the type of filters executed. That is, in between the pump and the Rotor space existing permanent liquid flow were one or more Thresholds switched, the impurities from a given particle size held back. This could for example be done with the help of a sieve. However, this had the disadvantage that the filter is after one of the number the particle dependent period added and a further passage of Liquid prevented. This in turn resulted in an interruption of the Fluid exchanges between the pump and engine compartment, so that in the Canned motor resulting heat could not be dissipated.

Durch die EP 0 438 466 B1 wurde auch bereits eine Filtereinrichtung bekannt, die das Problem des Zusetzens bzw. Verstopfens dadurch bewältigte, daß zwischen dem Gehäuse und der Rotorwelle ein durch Buchsen aus hartem Material begrenzter Filterspalt gebildet wurde, in welchem vorhandene Partikel auf eine für die nachfolgenden Spalte unschädliche Größe vermindert wurden.EP 0 438 466 B1 has also already disclosed a filter device which the problem of clogging or clogged by the fact that between the housing and the rotor shaft through a bushes made of hard material was formed limited filter gap, in which existing particles on a for the subsequent column harmless size were reduced.

Eine weitere, durch die EP 438 517 B1 bekannte Lösung sah vor, daß der Flüssigkeitsaustausch zwischen Pumpen- und Rotorraum nach dem notwendigen Auffüllen des Rotorraums mit Flüssigkeit weitgehend oder vollständig zum Erliegen kam, indem ein der Entlüftung dienender Spalt derart eng ausgeführt wurde, daß er durch die in der Flüssigkeit vorhandenen Partikel mit der Zeit zugesetzt wurde. Um dennoch eine Kühlung der im Rotorraum vorhandenen Flüssigkeit zu erreichen, wurde ein im Rotorraum angeordneter Wärmeaustauscher vorgesehen, der von einem von außen zugeführten Kühlmedium durchströmt wurde. Dieses Kühlmedium konnte gegebenenfalls das Fördermedium sein, das nun zwar weiterhin für die Kühlung des Motors sorgte, das aber mit der Flüssigkeit im Rotorraum nicht in direkten Kontakt kam.Another solution known from EP 438 517 B1 provided that the Fluid exchange between pump and rotor chamber after the necessary Filling the rotor space with liquid largely or completely to Resignation came by running a vent serving gap so close was that it is due to the particles present in the liquid over time was added. Nevertheless, a cooling of existing in the rotor chamber To reach liquid, was a arranged in the rotor chamber heat exchanger provided by an externally supplied cooling medium was flowed through. This cooling medium could possibly the Be conveyed medium, which continued to provide for the cooling of the engine, but that did not come into direct contact with the liquid in the rotor space.

Die hier zu beschreibende Erfindung geht einen anderen Weg. Wesentlich ist dabei, daß der zwischen dem Pumpen- und dem Rotorraum erfolgende Kreislauf durch eine Sperre auf ein Minimum beschränkt und ein Übertritt von Partikeln in den Rotorraum verhindert wird. Dies geschieht gemäß der Erfindung durch eine Kombination folgender Merkmale:

  • a) vor dem Übertritt des Radseitenraums der Pumpe in den Motorbereich ist eine auf der Welle der Spaltrohrmotorpumpe befestigte Schleuderscheibe angeordnet;
  • b) die Schleuderscheibe ist umgeben von einem Raum, der sich zur Pumpenseite hin konisch erweitert;
  • c) die Schleuderscheibe bildet einen Axialspalt mit einem zwischen Pumpenund Motorteil angeordneten Gehäuseteil,
  • d) über einen außerhalb des Motors angeordneten Wärmeaustauscher wird die im Rotorraum vorhandene Flüssigkeit in einem Kreislauf geführt.
    • The invention to be described here takes a different approach. It is essential that the resulting between the pump and the rotor chamber circuit is limited by a barrier to a minimum and a transfer of particles is prevented in the rotor space. This is done according to the invention by a combination of the following features:
  • a) before the passage of the Radseitenraums the pump in the engine area a mounted on the shaft of the canned motor pump slinger is arranged;
  • b) the centrifugal disc is surrounded by a space which widens conically towards the pump side;
  • c) the centrifugal disc forms an axial gap with a housing part arranged between pump and motor part,
  • d) via a heat exchanger arranged outside the engine, the liquid present in the rotor chamber is guided in a circuit.

    • Die Gestaltung gemäß den Merkmalen a und b hat zur Folge, daß die von der Schleuderscheibe erzeugte, zentrifugal gerichtete Förderwirkung aufgrund des konischen Verlaufes des die Schleuderscheibe umgebenden Raumes an dessen Wandung eine zur Pumpenseite gerichtete Strömung verursacht, aus der in dem genannten Raum eine unausgesetzte Zirkulationsströmung resultiert. In dieser Zirkulationsströmung werden feste Partikel aufgefangen, die durch das Laufrad wieder in den zum Pumpenauslaß gerichteten Förderstrom zurückgeführt werden. Dies kann mit Hilfe der Oberflächenrauhigkeit des Laufrades oder mittels Rückenschaufeln am Laufrad erfolgen. The design according to the features a and b has the consequence that the of Centrifugal generated, centrifugally directed conveying effect due to the conical course of the space surrounding the centrifugal disc at the Wall causes a directed to the pump side flow, from the in the said space results in a continuous circulation flow. In this Circulating flow is absorbed by solid particles passing through the impeller be recycled back into the directed to the pump outlet flow. This can be done with the aid of the surface roughness of the impeller or by means of Back scoops take place on the impeller.

    Das Merkmal c übernimmt dabei zusätzlich die Funktion einer Sperre, die nur einen sehr geringen Flüssigkeitsdurchlaß zur Folge hat.The feature c additionally assumes the function of a lock that only has a very low fluid passage result.

    Die Wirkung der Merkmale a bis c macht einen Wärmeaustauscher für die im Rotorraum befindliche Flüssigkeit notwendig, wobei dieser das Aggregat vervollständigende Wärmeaustauscher außerhalb von Pumpen- und Motorteil angeordnet und über Rohrleitungen mit dem Rotorraum verbunden ist. Der Antrieb des Flüssigkeitskreislaufes kann extern erfolgen, bevorzugt wird jedoch eine Ausführung, bei der ein auf der Welle des Aggregates angeordnetes Pumpenrad die Aufrechterhaltung des gekühlten Kreislaufes übernimmt.The effect of features a to c makes a heat exchanger for the in Rotor space liquid is necessary, which is the aggregate Completing heat exchanger outside of pump and motor part arranged and connected via pipes to the rotor space. The drive the liquid circuit can be done externally, but is preferred one Embodiment in which an impeller arranged on the shaft of the unit the maintenance of the refrigerated circuit takes over.

    Eine Sperre gegen den Übertritt von heißem Fördermedium in den Rotorraum wird durch ein pumpenseitig angeordnetes Axiallager, welches einen engen Radialspalt mit dem das Axiallager umgebenden Gehäuseteil bildet, erzeugt Schließlich ist es auch möglich, ein an sich bekanntes, auf einem mit der Welle rotierenden Teil angeordnetes, in Richtung der Pumpenseite förderndes Gewinde vorzusehen, welches ebenfalls eine Sperrwirkung erzeugt.A barrier against the passage of hot fluid into the rotor chamber is by a pump side arranged thrust bearing, which has a narrow radial gap With the housing surrounding the thrust bearing forms produced Finally, it is also possible, a known per se, on a rotating part with the shaft arranged to provide, in the direction of the pump side promotional thread, which also produces a barrier effect.

    Für die pumpenseitige Lagerung der Welle innerhalb des Rotorraumes wird ein Keramik-Gleitlager bevorzugt, welches einerseits unmittelbar und anderseits mittelbar über in der Welle angeordnete Bohrungen durch die im Rotorraum der Spaltrohrmotorpumpe befindliche Flüssigkeit geschmiert wird.For the pump-side bearing of the shaft within the rotor space is a Ceramic plain bearing preferred, which on the one hand directly and on the other indirectly via arranged in the shaft holes through the rotor in the Canned motor pump fluid is lubricated.

    Es wird im übrigen vorgeschlagen, die Schleuderscheibe als federndes Element auszubilden, um sie damit für ein Vorspannen des Keramik-Gleitlagers zu ertüchtigen. Dabei kann die Schleuderscheibe aus einer einzigen Scheibe bestehen oder aus mehreren Scheiben zusammengesetzt sein.It is also proposed, the centrifugal disc as a resilient element to train them for a biasing of the ceramic plain bearing toughen. The centrifugal disc can consist of a single disc consist of or composed of several discs.

    Anhand zweier Ausführungsbeispiele wird die Erfindung näher erläutert. Es zeigt

    Fig. 1
    eine erfindungsgemäße Spaltrohrmotorpumpe in teilweise geschnittener Ansicht;
    Fig. 2
    einen Ausschnitt aus der Spaltrohrmotorpumpe der Fig. 1, mit einer einteiligen Schleuderscheibe;
    Fig. 3
    eine vergrößerte Darstellung der im Kreis X der Fig. 2 gezeigten Einzelheit;
    Fig. 4
    einen im wesentlichen der Fig. 2 entsprechenden Ausschnitt, mit einer aus drei Federscheiben zusammengesetzten Schleuderscheibe.
    Based on two embodiments, the invention will be explained in more detail. It shows
    Fig. 1
    a canned motor pump according to the invention in a partially sectioned view;
    Fig. 2
    a detail of the canned motor pump of Figure 1, with a one-piece centrifugal disc.
    Fig. 3
    an enlarged view of the detail shown in circle X of Figure 2;
    Fig. 4
    a section corresponding substantially to FIG. 2, with a centrifugal disc composed of three spring discs.

    Die in der Fig. 1 dargestellte Spaltrohrmotorpumpe besteht im wesentlichen aus einem Pumpenteil 1 und einem Motorteil 2. Seitlich des Motorteils 2 ist ein Wärmeaustauscher 3, der mit dem Motorteil 2 über Rohrleitungen 4 und 5 verbunden ist, angeordnet. Gemeinsam ist den Teilen 1 und 2 des Aggregates eine Welle 6, auf welcher ein Laufrad 7 und ein Rotor 8 angeordnet sind. Im druckseitigen Gehäusedeckel 9 des Pumpenteils 1 ist ein Keramik-Gleitlager angeordnet, welches aus einer Lagerbuchse 10, einem motorseitigen Axiallager 11, einem pumpenseitigen Axiallager 12 und einer Lagerhülse 13 besteht. Auf der vom Pumpenteil 1 abgewandten Seite des Axiallagers 11 befindet sich ein Pumpenrad 14, durch welches die im Rotorraum 15 des Motorteils 2 vorhandene Flüssigkeit in einem über den Wärmeaustauscher 3 geführten Kreislauf bewegt wird.The canned motor pump shown in FIG. 1 consists essentially of a pump part 1 and a motor part 2. Side of the motor part 2 is a Heat exchanger 3, with the engine part 2 via pipes 4 and 5 is connected, arranged. Common to parts 1 and 2 of the unit a shaft 6 on which an impeller 7 and a rotor 8 are arranged. in the pressure-side housing cover 9 of the pump part 1 is a ceramic plain bearing arranged, which consists of a bearing bush 10, a motor-side thrust bearing 11, a pump-side thrust bearing 12 and a bearing sleeve 13 is made. On the From the pump part 1 side facing away from the thrust bearing 11 is a Impeller 14, through which in the rotor chamber 15 of the motor part 2 existing Moved liquid in a guided over the heat exchanger 3 circulation becomes.

    Wie aus der Fig. 2 mit größerer Deutlichkeit erkennbar ist, besitzt das Laufrad 7 auf seiner dem druckseitigen Radseitenraum 16 zugewandten Seite Rückenschaufeln 17. Diese erhalten eine in Richtung des Pumpenauslasses 18 weisende Förderung aufrecht und führen somit in den Radseitenraum 16 einströmende, mit Beimengungen versetzte Förderflüssigkeit wieder ab. Eine solche Förderung würde allerdings bei einem herkömmlich gestalteten Radseitenraum die eingedrungenen Schmutzpartikel nur in unzulänglichem Maße abführen. Es käme aufgrund der dort herrschenden Strömungsverhältnisse zu Anreicherungen von Schmutz, die letztlich im Bereich der relativ zueinander bewegten Teile zu einer fortschreitenden Abrasion führen würden. Überdies könnten Schmutzpartikel in den Rotorraum 15 gelangen.As can be seen from Fig. 2 with greater clarity, the impeller has 7th on its side facing the pressure-side Radseitenraum 16 side Back vanes 17. These receive one in the direction of the pump outlet 18th pointing promotion upright and thus lead into the Radseitenraum sixteenth inflowing, admixed with admixtures conveying fluid again. A However, such support would be in a conventionally designed Radseitenraum the penetrated dirt particles only inadequate dissipate. It would be due to the prevailing flow conditions Enrichments of dirt, which are ultimately in the range of relative to each other Moving parts would lead to progressive abrasion. moreover Dirt particles could get into the rotor chamber 15.

    Eine derartige Wirkung wird bei der erfindungsgemäßen Spaltrohrmotorpumpe dadurch vermieden, daß eine auf der Welle 6 angeordnete Schleuderscheibe 19 die in ihren, dem Axiallager 12 vorgelagerten Bereich gelangende verunreinigte Flüssigkeit in Richtung der Innenwand 20 des Gehäusedeckels 9 schleudert Dabei führt eine konische Gestaltung des die Schleuderscheibe 19 umgebenden Raumes 21 dazu, daß sich auf der Innenwand 20 absetzende Schmutzpartikel der Fliehkraft folgend vom kleineren zum größeren Durchmesser abgleiten und von einer Drallströmung in Richtung des den Rückenschaufeln 17 benachbarten Radseitenraumes 16 gefördert werden. In den Fig. 2 und 3 sind die sich in den Räumen 16 und 21 ergebenden Hauptströmungen durch Pfeile angedeutet, wobei zu beachten ist, daß zwischen diesen Hauptströmungen ein gewisser Austausch erfolgt.Such an effect is in the canned motor pump according to the invention thereby avoided that a arranged on the shaft 6 slinger 19th the contaminated in their, the thrust bearing 12 area passing contaminated Liquid in the direction of the inner wall 20 of the housing cover 9 hurls it leads a conical shape of the centrifugal disc 19 surrounding Room 21 to the fact that on the inner wall 20 settling dirt particles of the Centrifugal force from the smaller to larger diameter slide off and from a swirl flow in the direction of the back buckets 17 adjacent Radseitenraumes 16 are promoted. In Figs. 2 and 3 are in the Rooms 16 and 21 resulting main currents indicated by arrows, wherein It should be noted that there is a certain exchange between these main currents he follows.

    Eine zusätzliche Sperre gegen ein Eindringen von noch vorhandenen Feststoffpartikeln in den Rotorraum 15 bildet ein Axialspalt 22, der zwischen der Schleuderscheibe 19 und dem Gehäusedeckel 9 vorhanden ist.An additional barrier against intrusion of remaining Solid particles in the rotor chamber 15 forms an axial gap 22 which is between the Slinger 19 and the housing cover 9 is present.

    Ein Radialspalt 23 zwischen dem Axiallager 12 und dem Gehäusedeckel 9 bildet eine Sperre gegen einen Flüssigkeitsaustausch zwischen dem Raum 21 und dem Rotorraum 15, schützt also den Rotorraum vor in der Förderflüssigkeit enthaltener Wärme. Schließlich kann innerhalb des Radialspaltes 23 noch ein in Richtung des Raumes 21 förderndes Gewinde 24 auf dem mit der Welle 6 rotierenden Axiallager 12 vorgesehen werden. Die Fig. 3 zeigt dieses Merkmal.A radial gap 23 between the thrust bearing 12 and the housing cover 9 forms a barrier against fluid communication between the space 21 and the Rotor space 15, so protects the rotor space from contained in the pumped liquid Warmth. Finally, within the radial gap 23 still in the direction of the Room 21 promotional thread 24 on the rotating with the shaft 6 Thrust bearing 12 can be provided. Fig. 3 shows this feature.

    Neben der Schleuderfunktion und der Funktion als ein Partner zur Bildung eines Axialspaltes 22 übernimmt die Schleuderscheibe 19 im dargestellten Aggregat noch eine weitere Aufgabe: sie dient zur Aufbringung einer auf die Lagerhülse 13 wirkenden Vorspannung. Hierdurch wird es möglich, daß sich die axiale Erstreckung der Lagerhülse 13 zur Anpassung an unterschiedliche Wärmedehnungen um einen vorgegebenen Betrag verändern kann. In der Ausführung der Fig. 2 übernimmt dies eine einteilige, aus Metall bestehende Schleuderscheibe 19, in der Ausführung der Fig. 4 ist es eine aus drei einzelnen Federscheiben 25 zusammengesetzte Schleuderscheibe 26.In addition to the spin function and the function as a partner for the formation of a Axial gap 22 takes over the slinger 19 in the illustrated unit Yet another object: it serves to apply a on the bearing sleeve thirteenth acting bias. This makes it possible that the axial Extension of the bearing sleeve 13 for adaptation to different Thermal expansion can change by a predetermined amount. In the Embodiment of FIG. 2 assumes this one-piece, made of metal Slinger 19, in the embodiment of Fig. 4, it is one of three individual Spring washers 25 composite centrifugal disc 26th

    Die im Rotorraum 15 befindliche, von dem Pumpenrad 14 umgewälzte Flüssigkeit dient auch zur Schmierung der Axiallager 11 und 12 Dies geschieht zum einen unmittelbar durch die umgebende Flüssigkeit, zum anderen sind in der Welle 6 Bohrungen 27 vorgesehen, die Flüssigkeit zu den Axiallagern 11 und 12 leiten. Über Bohrungen 28 und eine Nut 29 gelangt diese Flüssigkeit schließlich zu den Gleitflächen der Axiallager 11 und 12.The located in the rotor chamber 15, circulated by the impeller 14 liquid also serves to lubricate the thrust bearings 11 and 12 This happens on the one hand directly through the surrounding liquid, on the other hand are in the shaft. 6 Holes 27 are provided, the liquid to the thrust bearings 11 and 12 lead. About holes 28 and a groove 29, this liquid finally reaches the Sliding surfaces of the thrust bearings 11 and 12.

    Claims (8)

    Spaltrohrmotorpumpe mit einer dem Rotorraum (15) des Motors (2) vorgeschalteten Einrichtung zur Verhinderung eines Übertritts von in der Förderflüssigkeit enthaltenen Feststoffen und einem Flüssigkeitskreislauf zur Kühlung der im Rotorraum (15) vorhandenen Flüssigkeit, gekennzeichnet durch die Kombination folgender Merkmale: a) vor dem Übertritt des Radseitenraums (16) der Pumpe (1 ) in den Motorbereich (2) ist eine auf der Welle (6) der Spaltrohrmotorpumpe befestigte Schleuderscheibe (19; 26) angeordnet; b) die Schleuderscheibe (19; 26) ist umgeben von einem Raum (21), der sich zur Pumpenseite hin konisch erweitert; c) die Schleuderscheibe (19; 26) bildet einen Axialspalt (22) mit einem zwischen Pumpenteil (1) und Motorteil (2) angeordneten Gehäuseteil (9); d) über einen außerhalb des Motors (2) angeordneten Wärmeaustauscher (3) wird die im Rotorraum (15) vorhandene Flüssigkeit in einem Kreislauf geführt. A canned motor pump with a device upstream of the rotor chamber (15) of the motor (2) for preventing a transfer of solids contained in the pumped liquid and a liquid circuit for cooling the liquid present in the rotor chamber (15), characterized by the combination of the following features: a) before the passage of the Radseitenraums (16) of the pump (1) in the motor region (2) is mounted on the shaft (6) of the canned motor pump slinger (19; 26); b) the centrifugal disc (19; 26) is surrounded by a space (21) which widens conically towards the pump side; c) the centrifugal disc (19; 26) forms an axial gap (22) with a housing part (9) arranged between the pump part (1) and the motor part (2); d) via a heat exchanger (3) arranged outside the motor (2), the liquid present in the rotor chamber (15) is circulated. Spaltrohrmotorpumpe nach Anspruch 1, gekennzeichnet durch mehrere auf der Rückseite des Pumpenlaufrades (7) vorgesehene Rückenschaufeln (17).Canned motor pump according to Claim 1, characterized by a plurality of back blades (17) provided on the rear side of the pump impeller (7). Spaltrohrmotorpumpe nach Anspruch 1 oder 2, gekennzeichnet durch ein im Rotorraum (15) auf der zur Pumpe (1) hin gerichteten Seite angeordnetes Axiallager (12), welches einen engen Radialspalt (23) mit dem das Axiallager (12) umgebenden Gehäuseteil (9) bildet.Canned motor pump according to Claim 1 or 2, characterized by a thrust bearing (12) arranged in the rotor chamber (15) on the side facing the pump (1), which has a narrow radial gap (23) with the housing part (9) surrounding the thrust bearing (12). forms. Spaltrohrmotorpumpe nach Anspruch 3, gekennzeichnet durch ein auf einem mit der Welle (6) rotierenden Axiallager (12) angeordnetes, in Richtung der Pumpenseite förderndes Gewinde (24).Canned motor pump according to claim 3, characterized by a thread (24) arranged on a thrust bearing (12) rotating with the shaft (6) and conveying in the direction of the pump side. Spaltrohrmotorpumpe nach einem der Ansprüche 1 bis 4, gekennzeichnet durch ein auf der Welle (6) angeordnetes Pumpenrad (14) zur Aufrechterhaltung des über den Wärmeaustauscher (3) geführten Kreislaufes.Canned motor pump according to one of Claims 1 to 4, characterized by an impeller (14) arranged on the shaft (6) for maintaining the circuit conducted via the heat exchanger (3). Spaltrohrmotorpumpe nach Anspruch 5, gekennzeichnet durch ein auf der Welle angeordnetes Keramik-Gleitlager (10,11,12,13), welches einerseits unmittelbar und anderseits mittelbar über in der Welle (6) angeordnete Bohrungen (27) durch die im Rotorraum (15) der Spaltrohrmotorpumpe befindliche Flüssigkeit geschmiert wird.Canned motor pump according to Claim 5, characterized by a ceramic plain bearing (10, 11, 12, 13) arranged on the shaft, which on the one hand directly and, on the other hand, indirectly via bores (27) arranged in the shaft (6) through the rotor chamber (15). The canned motor pump fluid is lubricated. Spaltrohrmotorpumpe nach Anspruch 6, gekennzeichnet durch eine federnd ausgebildete Schleuderscheibe (19), mit welcher die Lagerhülse (13) mit Vorspannung auf der Welle (6) befestigt ist.Canned motor pump according to claim 6, characterized by a spring-trained centrifugal disc (19), with which the bearing sleeve (13) with bias on the shaft (6) is fixed. Spaltrohrmotorpumpe nach Anspruch 7, dadurch gekennzeichnet, daß die Schleuderscheibe (26) aus mehreren Federscheiben (25) zusammengesetzt ist.Canned motor pump according to Claim 7, characterized in that the centrifugal disc (26) is composed of several spring discs (25).
    EP04008290A 2003-05-16 2004-04-06 Canned motor pump Expired - Lifetime EP1477683B1 (en)

    Priority Applications (2)

    Application Number Priority Date Filing Date Title
    PL04008290T PL1477683T3 (en) 2003-05-16 2004-04-06 Canned motor pump
    SI200431847T SI1477683T1 (en) 2003-05-16 2004-04-06 Canned motor pump

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10322464A DE10322464B4 (en) 2003-05-16 2003-05-16 Canned motor pump
    DE10322464 2003-05-16

    Publications (3)

    Publication Number Publication Date
    EP1477683A2 true EP1477683A2 (en) 2004-11-17
    EP1477683A3 EP1477683A3 (en) 2009-05-27
    EP1477683B1 EP1477683B1 (en) 2012-01-25

    Family

    ID=33016445

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP04008290A Expired - Lifetime EP1477683B1 (en) 2003-05-16 2004-04-06 Canned motor pump

    Country Status (8)

    Country Link
    EP (1) EP1477683B1 (en)
    AT (1) ATE543003T1 (en)
    DE (1) DE10322464B4 (en)
    DK (1) DK1477683T3 (en)
    ES (1) ES2380820T3 (en)
    PL (1) PL1477683T3 (en)
    PT (1) PT1477683E (en)
    SI (1) SI1477683T1 (en)

    Cited By (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN101608641B (en) * 2009-06-23 2010-12-08 襄樊五二五泵业有限公司 Chemical process pump body insulation structure
    CN102297143A (en) * 2011-08-11 2011-12-28 马建锐 Permanent magnetic motor drainage pump
    DE102011119626A1 (en) 2011-11-29 2013-05-29 Wilo Se Glandless pump motor
    DE102011119625A1 (en) 2011-11-29 2013-05-29 Wilo Se Glandless pump motor
    US20130227931A1 (en) * 2010-09-03 2013-09-05 Snecma Turbopump, in particular for feeding rocket engines
    CN103775347A (en) * 2012-10-22 2014-05-07 中国核动力研究设计院 Full-sealed pump having dynamic exhaust function
    CN104006001A (en) * 2014-05-29 2014-08-27 安徽银龙泵阀股份有限公司 Pump core with heating wires
    CN107288789A (en) * 2016-03-30 2017-10-24 长城汽车股份有限公司 Fuel pump, fuel tank and vehicle fuel feed system and vehicle fuel supply method

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102011055599A1 (en) * 2011-11-22 2013-05-23 Hella Kgaa Hueck & Co. Pump for temperature circuit in vehicle, has housing with pump chamber, and rotatable blade wheel arranged in pump chamber for conveying fluid, where flow component is arranged on blade wheel for generating pressure field

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    FR1250077A (en) * 1960-01-26 1961-01-06 Klein Schanzlin & Becker Ag Sealed centrifugal electro-pump unit
    US3186513A (en) * 1962-11-09 1965-06-01 James T E Dunn Method and mechanism for lubricating the bearings of a pump rotor and motor combination for pumping an abradant-containing liquid
    US3318253A (en) * 1965-01-21 1967-05-09 Pall Corp Pumps with heat exchanger for pumping slurries

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    JPS63266193A (en) * 1986-09-30 1988-11-02 Jun Taga Pump
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    DE3834668A1 (en) * 1988-10-12 1990-04-19 Klein Schanzlin & Becker Ag PRESSURE-RESISTANT ENCLOSED TUBE MOTOR
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    DE951130C (en) * 1940-11-11 1956-10-25 Hayward Tyler & Company Ltd System consisting of an electric motor and a pump driven by it
    CH292898A (en) * 1951-08-13 1953-08-31 Charmilles Sa Ateliers Hydraulic motor-pump unit.
    FR1250077A (en) * 1960-01-26 1961-01-06 Klein Schanzlin & Becker Ag Sealed centrifugal electro-pump unit
    US3186513A (en) * 1962-11-09 1965-06-01 James T E Dunn Method and mechanism for lubricating the bearings of a pump rotor and motor combination for pumping an abradant-containing liquid
    US3318253A (en) * 1965-01-21 1967-05-09 Pall Corp Pumps with heat exchanger for pumping slurries

    Cited By (13)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN101608641B (en) * 2009-06-23 2010-12-08 襄樊五二五泵业有限公司 Chemical process pump body insulation structure
    US20130227931A1 (en) * 2010-09-03 2013-09-05 Snecma Turbopump, in particular for feeding rocket engines
    US9435347B2 (en) * 2010-09-03 2016-09-06 Snecma Turbopump, in particular for feeding rocket engines
    CN102297143A (en) * 2011-08-11 2011-12-28 马建锐 Permanent magnetic motor drainage pump
    DE102011119625A1 (en) 2011-11-29 2013-05-29 Wilo Se Glandless pump motor
    WO2013079178A2 (en) 2011-11-29 2013-06-06 Wilo Se Wet-rotor motor pump
    WO2013079179A2 (en) 2011-11-29 2013-06-06 Wilo Se Wet-rotor motor pump
    DE102011119626A1 (en) 2011-11-29 2013-05-29 Wilo Se Glandless pump motor
    CN103775347A (en) * 2012-10-22 2014-05-07 中国核动力研究设计院 Full-sealed pump having dynamic exhaust function
    CN103775347B (en) * 2012-10-22 2016-12-07 中国核动力研究设计院 There is the glandless motor pump of dynamic exhaust function
    CN104006001A (en) * 2014-05-29 2014-08-27 安徽银龙泵阀股份有限公司 Pump core with heating wires
    CN104006001B (en) * 2014-05-29 2016-04-27 安徽银龙泵阀股份有限公司 A kind of pump core with heating wire
    CN107288789A (en) * 2016-03-30 2017-10-24 长城汽车股份有限公司 Fuel pump, fuel tank and vehicle fuel feed system and vehicle fuel supply method

    Also Published As

    Publication number Publication date
    DE10322464A1 (en) 2004-12-02
    ATE543003T1 (en) 2012-02-15
    DE10322464A8 (en) 2005-04-28
    ES2380820T3 (en) 2012-05-18
    PT1477683E (en) 2012-04-27
    PL1477683T3 (en) 2012-07-31
    DE10322464B4 (en) 2012-05-03
    EP1477683B1 (en) 2012-01-25
    SI1477683T1 (en) 2012-05-31
    EP1477683A3 (en) 2009-05-27
    DK1477683T3 (en) 2012-05-07

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