EP0009449A1 - Bearing for ambivalent centrifugal pump - Google Patents

Bearing for ambivalent centrifugal pump Download PDF

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Publication number
EP0009449A1
EP0009449A1 EP79400651A EP79400651A EP0009449A1 EP 0009449 A1 EP0009449 A1 EP 0009449A1 EP 79400651 A EP79400651 A EP 79400651A EP 79400651 A EP79400651 A EP 79400651A EP 0009449 A1 EP0009449 A1 EP 0009449A1
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EP
European Patent Office
Prior art keywords
centrifugal pump
stop
pump
motor
ring
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
EP79400651A
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German (de)
French (fr)
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EP0009449B1 (en
Inventor
Claude Van Rossem
Jean-Claude Le Dall
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.)
ELECTRO-HYDRAULIQUE SEH Ste
Thales SA
Original Assignee
ELECTRO-HYDRAULIQUE SEH Ste
Le Materiel Telephonique Thomson CSF
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Application filed by ELECTRO-HYDRAULIQUE SEH Ste, Le Materiel Telephonique Thomson CSF filed Critical ELECTRO-HYDRAULIQUE SEH Ste
Publication of EP0009449A1 publication Critical patent/EP0009449A1/en
Application granted granted Critical
Publication of EP0009449B1 publication Critical patent/EP0009449B1/en
Expired 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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • 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
    • 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
    • F04D29/5806—Cooling the drive system

Definitions

  • the present invention relates to centrifugal pumps, in particular those of them which, constituted by a plurality of stackable pump elements driven by an incorporated electric motor, belong to the so-called multicellular type.
  • the invention relates more particularly to an improvement of the multicellular centrifugal pump intended to give it a double possibility of operation in the air and in the liquid to be pumped.
  • centrifugal pumps In the construction technique of centrifugal pumps, a distinction is made between pumps intended to operate in air and others capable of pumping a liquid in which they are immersed.
  • the electric motor driving the pump is cooled by the effect of a circulation - usually forced - of the fluid borrowed from the ambient environment: air for the former, the liquid to be pumped for seconds.
  • the invention provides, according to its main characteristic, a centrifugal pump in which the cooling of the electric drive motor is linked to the fluid to be pumped and not borrowed from the ambient medium.
  • centrifugal pump according to the invention gives the centrifugal pump according to the invention a new character, that of being an ambivalent centrifugal pump whose use accommodates two ambient media.
  • the invention relates to an ambivalent centrifugal pump of the "amphibious" type, that is to say operating indifferently in air or in water.
  • the central drive part M comprises an electric motor with a flooded rotor. This rotor is visible in 3, the motor stator is illustrated in 4, the motor windings in 5. In order to avoid a possible short circuit between metallic masses of the rotor and the stator by a pumped liquid which would be conductive it is planned to isolate them according to the rules of art.
  • the motor shaft 6 drives the pump elements, by means of the extensions 7, 7 'along the common axis of rotation R'R and on either side of the central drive part.
  • each of the pump ends is formed by stacking two pump elements, such as the stacks EP1 and EP2 at the right end of FIG. 1.
  • any pump element such as the PPE stack
  • a wheel capable of turning in a chamber such as the wheel 11 in the chamber 12 of the PPE stack, under the action of a driving driving force. from the single engine.
  • the wheels such as the wheel 11, are included coaxially with the pump shaft.
  • the wheels of the various superimposed elements are rigidly assembled together by a dog clutch as has been described in French patent application No. 76 05 510 filed on February 27, 1976 by the applicant and published under No. 2,342,416.
  • clutches of the superimposed wheels is provided by means of a clutch of claw teeth with a trapezoidal profile eliminating any axial play, as described in the aforementioned patent.
  • circulation conduits are provided for the engine coolant.
  • a longitudinal circulation duct which puts the front cavities 13 'and rear 13 of the pumps in communication with each other.
  • the cavities 13 'and 13 are individually in communication with the chambers 12' and 12 by means of the elements 15 'and 15 usually designated each by the term "return channel", the pumped liquid existing in the cavity 13' is routed along the arrow by the conduit 14 in the cavity 13.
  • the circulation of liquids established by the conduit 14 continuously and constitutes a true engine coolant jacket.
  • FIG. 2 shows the detail arrangement of a bearing in the embodiment of the invention illustrated by Figure 1.
  • the shaft sleeve is designated by 8, the stop support by 9, the bearing by 10, the stop ring by 29, the O-ring by 19.
  • the stop is constituted by a part in the form of a ring 29.
  • On the periphery of large diameter of this ring are hollowed out several notches in the example described there are three notches at 120 ° relating to the thickness of the ring.
  • the circumferential edge of small diameter of the stop ring 29 is chamfered on one of its planar faces, as is particularly visible in the sectional view of Figure 1.
  • the assembly between the support stop 9 and the shaft sleeve 8 is made by dog clutch.
  • the stop support 9 is made integral with the motor shaft by means of a pin fixing 90 visible in FIG. 1.
  • the O-ring 19 is introduced at the bottom of the low-cut part of the stop support 9.
  • the stop support 9 has on its large diameter periphery three flexible extensions, such as the extension 39 in the shape of a claw or tongue.
  • the stopper ring 29 is threaded by anchoring the flexible tabs in the notches provided, so that the chamfered edge comes to bear on the joint 19.
  • the dog clutch 8-9 is assembled.
  • the stop support 9 rotates the sleeve by dog clutch and by means of the three claws, in retaining tabs, the stop ring.
  • any alignment imperfection is erased by the recommended arrangement.
  • the parts: shirt, pad and stopper are made of a material of the ceramic type.
  • the stop support is made of a thermoplastic material of the noryl type, flexible and robust.
  • the recommended solution is economical since the arrangement is self-aligning without requiring machined surfaces with too narrow tolerances. It has the very great advantage of erasing the alignment imperfections or those of surfacing of the parts.
  • the two bearings, front and rear, are both lubricated by the pumped liquid.
  • the abutment face of the bearings has three grooves at 120 °, so as to maintain a constant liquid film, between the friction faces. These grooves are not shown in the figure.
  • Such a pump is designed to be used interchangeably in air: for example, in line, on a pipe, or in the liquid to be pumped in which it is immersed without damage.
  • the liquid to be pumped can for example be pure water or water containing salts or impurities such as to make it electrically conductive.
  • the liquid can be different from water, the adaptation to the liquid to be pumped being within the skill of the art.
  • the example described constitutes an ambivalent pump model of the "amphibious" type operating both in air and in water.
  • It can be used to drain water by submerging it at the bottom of a pond, a river, a well, etc.

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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)
  • Details Of Reciprocating Pumps (AREA)

Abstract

1. Multiple cell centrifugal pump comprising within a pump casing formed by a single block at least two stackable pump elements which are driven by an electric motor cooled by the circulation of the fluid fed by the pump, in which the stackable pump elements are mounted at the ends of the shaft driven by the motor on either side of the said motor, and in which the pump casing includes in the motor section at least one conduit (14) communicating the front cell (13') to the rear cell (13) of the pump and being provided for the circulation of the supplied fluid having the function to cool the motor and to lubricate the bearings (D) thereof, and in which each of the bearings (D) of the drive motor includes at least one shaft bushing (8), one bearing shell (10) and a stop member (29), characterized in that - the shaft bushing (8) is driven by a position shaft clutch, - the bearing shell (10) cooperates with the stop member (29) which is carried by a stop retainer (9), and - the stop member (29) may be rotatably driven and is provided with means for self-alignment.

Description

La présente invention concerne les pompes centrifuges, en particulier celles d'entre elles qui, constituées par une pluralité d'éléments de pompe empilables entraînés par un moteur électrique incorporé, appartiennent au type dit multicellulaire. L'invention vise plus particulièrement un perfectionnement de la pompe centrifuge multicellulaire destiné à lui conférer une double possibilité de fonctionnement dans l'air et dans le liquide à pomper.The present invention relates to centrifugal pumps, in particular those of them which, constituted by a plurality of stackable pump elements driven by an incorporated electric motor, belong to the so-called multicellular type. The invention relates more particularly to an improvement of the multicellular centrifugal pump intended to give it a double possibility of operation in the air and in the liquid to be pumped.

Dans la technique de construction des pompes centrifuges on distingue des pompes destinées à fonctionner dans l'air et d'autres aptes à pomper un liquide dans lequel elles sont immergées.In the construction technique of centrifugal pumps, a distinction is made between pumps intended to operate in air and others capable of pumping a liquid in which they are immersed.

Dans un cas comme dans l'autre le moteur électrique d'entraînement de la pompe est refroidi par l'effet d'une circulation -ordinairement forcée- du fluide emprunté au milieu ambiant : l'air pour les premières, le liquide à pomper pour les secondes.In one case as in the other, the electric motor driving the pump is cooled by the effect of a circulation - usually forced - of the fluid borrowed from the ambient environment: air for the former, the liquid to be pumped for seconds.

Mais cette disposition simple limite l'application de la pompe à un usage unique. Il s'ensuit que les pompes du commerce sont seulement aptes à fonctionner dans le milieu pour lequel le constructeur les a prévues, et qu'il n'existe pas actuellement sur le marché de pompes centrifuges non "spécifiques" du milieu ambiant.However, this simple arrangement limits the application of the pump to single use. It follows that commercial pumps are only capable of operating in the environment for which the manufacturer has provided them, and that there are currently no non-specific centrifugal pumps on the market in the ambient environment.

Ainsi, pour répondre aux préoccupations de nombreux usagers, l'invention prévoit, selon sa caractéristique principale, une pompe centrifuge dans laquelle le refroidissement du moteur électrique d'entraînement est lié au fluide à pomper et non pas emprunté au milieu ambiant.Thus, to meet the concerns of many users, the invention provides, according to its main characteristic, a centrifugal pump in which the cooling of the electric drive motor is linked to the fluid to be pumped and not borrowed from the ambient medium.

Cette disposition procure à la pompe centrifuge selon l'invention un caractère nouveau, celui d'être une pompe centrifuge ambivalente dont l'utilisation s'accomode de deux milieux ambiants.This arrangement gives the centrifugal pump according to the invention a new character, that of being an ambivalent centrifugal pump whose use accommodates two ambient media.

En particulier l'invention vise une pompe centrifuge ambivalente du type "amphibie", c'est-à-dire fonctionnant indifféremment dans l'air ou dans l'eau.In particular, the invention relates to an ambivalent centrifugal pump of the "amphibious" type, that is to say operating indifferently in air or in water.

Les objets et caractéristiques de la présente invention apparaîtront plus clairement à la lecture de la description suivante d'exemples de réalisation, ladite description étant faite en relation avec les dessins ci-annexés dans lesquels :

  • - la figure 1 représente une vue en coupe longitudinale partielle d'une forme de réalisation de la pompe centrifuge ambivalente selon l'invention ;
  • - la figure 2 représente une vue en perspective de l'agencement de détail du palier avant, tel que signalé en D sur la figure 1.
The objects and characteristics of the present invention will appear more clearly on reading the following description of exemplary embodiments, said description being made in relation with the attached drawings in which:
  • - Figure 1 shows a partial longitudinal sectional view of an embodiment of the ambivalent centrifugal pump according to the invention;
  • FIG. 2 represents a perspective view of the detail arrangement of the front bearing, as indicated in D in FIG. 1.

Sur la vue en coupe partielle de la figure 1, dans la pompe 1 incluse en un corps monobloc 2, qui rassemble une partie motrice centrale M, encadrée par deux parties pompe P' et P.In the partial sectional view of FIG. 1, in the pump 1 included in a one-piece body 2, which brings together a central driving part M, framed by two pump parts P 'and P.

La partie motrice centrale M comprend un moteur électrique à rotor noyé. Ce rotor est visible en 3, le stator du moteur est illustré en 4, les enroulements du moteur en 5. En vue d'éviter un éventuel court-circuit entre masses métalliques du rotor et du stator par un liquide pompé qui serait conducteur il est prévu d'isoler ceux-ci selon les règles de l'art. L'arbre 6 du moteur entraîne les éléments de pompe, par l'intermédiaire des prolongements 7, 7' le long de l'axe de rotation commun R'R et de part et d'autre de la partie motrice centrale.The central drive part M comprises an electric motor with a flooded rotor. This rotor is visible in 3, the motor stator is illustrated in 4, the motor windings in 5. In order to avoid a possible short circuit between metallic masses of the rotor and the stator by a pumped liquid which would be conductive it is planned to isolate them according to the rules of art. The motor shaft 6 drives the pump elements, by means of the extensions 7, 7 'along the common axis of rotation R'R and on either side of the central drive part.

Dans la forme de réalisation illustrée par la figure 1 chacune des extrémités pompe est constituée par empilage de deux éléments de pompe, tels les empilements EP1 et EP2 de l'extrémité de droite de la figure 1.In the embodiment illustrated in FIG. 1, each of the pump ends is formed by stacking two pump elements, such as the stacks EP1 and EP2 at the right end of FIG. 1.

Dans un élément de pompe quelconque, tel l'empilement EPI, on distingue : une roue apte à tourner dans une chambre telle la roue 11 dans la chambre 12 de l'empilement EPI, sous l'action d'une force motrice d'entraînement provenant du moteur unique.In any pump element, such as the PPE stack, a distinction is made: a wheel capable of turning in a chamber such as the wheel 11 in the chamber 12 of the PPE stack, under the action of a driving driving force. from the single engine.

Les roues, telle la roue 11, sont incluses coaxialement à l'arbre de la pompe. Les roues des différents éléments superposés sont assemblées rigidement entre elles par crabot comme cela a été décrit dans la demande de brevet français N° 76 05 510 déposée le 27 février 1976 par la demanderesse et publiée sous le N° 2 342 416. L'assemblage par crabots des roues superposées est procuré au moyen d'un emmanchement de dents de crabot à profil trapézoïdal éliminant tout jeu axial, ainsi qu'il est décrit dans le brevet précité.The wheels, such as the wheel 11, are included coaxially with the pump shaft. The wheels of the various superimposed elements are rigidly assembled together by a dog clutch as has been described in French patent application No. 76 05 510 filed on February 27, 1976 by the applicant and published under No. 2,342,416. by clutches of the superimposed wheels is provided by means of a clutch of claw teeth with a trapezoidal profile eliminating any axial play, as described in the aforementioned patent.

Selon l'invention, il est ménagé des conduits de circulation pour le fluide de refroidissement du moteur. On distingue dans le corps de pompe en 14 un conduit longitudinal de circulation qui met en communication entre elles les cavités avant 13' et arrière 13 des pompes. Dans la réalisation décrite, les conduits sont au nombre de quatre, un seul étant visible sur la figure 1.According to the invention, circulation conduits are provided for the engine coolant. We distinguish in the pump body at 14 a longitudinal circulation duct which puts the front cavities 13 'and rear 13 of the pumps in communication with each other. In the embodiment described, there are four conduits, only one of which is visible in FIG. 1.

Comme les cavités 13' et 13 sont individuellement en communication avec les chambres 12' et 12 par l'intermédiaire des éléments 15' et 15 usuellement désignés chacun par le terme "canal de retour", le liquide pompé existant dans la cavité 13' est acheminé selon la flèche par le conduit 14 dans la cavité 13. La figure étant de révolution, la circulation de liquides établie par le conduit 14 en continu et constitue une véritable chemise liquide de refroidissement du moteur.As the cavities 13 'and 13 are individually in communication with the chambers 12' and 12 by means of the elements 15 'and 15 usually designated each by the term "return channel", the pumped liquid existing in the cavity 13' is routed along the arrow by the conduit 14 in the cavity 13. The figure being of revolution, the circulation of liquids established by the conduit 14 continuously and constitutes a true engine coolant jacket.

La figure 2 montre l'agencement de détail d'un palier dans la forme de réalisation de l'invention illustrée par la figure 1. Sur ces deux figures les mêmes références numériques désignent les mêmes objets. La chemise d'arbre est désignée par 8, le support de butée par 9, le coussinet par 10, la bague de butée par 29, le joint torique par 19.Figure 2 shows the detail arrangement of a bearing in the embodiment of the invention illustrated by Figure 1. In these two figures the same reference numerals denote the same objects. The shaft sleeve is designated by 8, the stop support by 9, the bearing by 10, the stop ring by 29, the O-ring by 19.

Selon l'invention la butée est constituée par une pièce en forme de bague 29. Sur le pourtour de grand diamètre de cette bague sont creusées plusieurs encoches dans l'exemple décrit il s'agit de trois encoches à 120° intéressant l'épaisseur de la bague. D'autre part, le bord circonférentiel de petit diamètre de la bague de butée 29 est chanfreiné sur l'une de ses faces planes, comme cela est particulièrement visible dans la vue en coupe de la figure 1. L'assemblage entre le support de butée 9 et la chemise d'arbre 8 se fait par crabot. Le support de butée 9 est rendu solidaire de l'arbre moteur au moyen d'une fixation par goupille 90 visible sur la figure 1. Le joint torique 19 est introduit au fond de la partie décolletée du support de butée 9. Le support de butée 9 comporte sur son pourtour de grand diamètre trois prolongements souples, tel le prolongement 39 en forme de griffe ou languette. Au montage, après avoir placé le joint torique en fond du décolletage de la pièce support de butée, on enfile la bague de butée 29 en ancrant les languettes souples dans les encoches prévues, de manière à ce que le bord chanfreiné vienne en appui sur le joint 19. On assemble le crabot 8-9.According to the invention, the stop is constituted by a part in the form of a ring 29. On the periphery of large diameter of this ring are hollowed out several notches in the example described there are three notches at 120 ° relating to the thickness of the ring. On the other hand, the circumferential edge of small diameter of the stop ring 29 is chamfered on one of its planar faces, as is particularly visible in the sectional view of Figure 1. The assembly between the support stop 9 and the shaft sleeve 8 is made by dog clutch. The stop support 9 is made integral with the motor shaft by means of a pin fixing 90 visible in FIG. 1. The O-ring 19 is introduced at the bottom of the low-cut part of the stop support 9. The stop support 9 has on its large diameter periphery three flexible extensions, such as the extension 39 in the shape of a claw or tongue. During assembly, after placing the O-ring at the bottom of the turning of the stopper support piece, the stopper ring 29 is threaded by anchoring the flexible tabs in the notches provided, so that the chamfered edge comes to bear on the joint 19. The dog clutch 8-9 is assembled.

En fonctionnement, le support de butée 9 entraîne en rotation par crabotage la chemise et par l'intermédiaire des trois griffes, en languettes de retenue, la bague de butée.In operation, the stop support 9 rotates the sleeve by dog clutch and by means of the three claws, in retaining tabs, the stop ring.

Comme la bague de butée est constamment maintenue en appui sur le joint torique par son chanfrein et que le joint torique est fait d'un matériau élastomère, toute imperfection d'alignement est effacée par l'agencement préconisé.As the stop ring is constantly supported on the O-ring by its chamfer and the O-ring is made of an elastomeric material, any alignment imperfection is erased by the recommended arrangement.

Dans l'exemple décrit, les pièces : chemise, coussinet et butée sont faites d'un matériau du type céramique. Le support de butée est fait d'un matériau thermoplastique du type noryl, souple et robuste.In the example described, the parts: shirt, pad and stopper are made of a material of the ceramic type. The stop support is made of a thermoplastic material of the noryl type, flexible and robust.

La solution préconisée est économique puisque l'agencement est auto-alignant sans nécessiter des surfaces usinées avec des tolérances trop étroites. Il présente le très grand avantage d'effacer les imperfections d'alignement ou celles de surfaçage des pièces.The recommended solution is economical since the arrangement is self-aligning without requiring machined surfaces with too narrow tolerances. It has the very great advantage of erasing the alignment imperfections or those of surfacing of the parts.

Comme on le voit sur la figure 1, l'agencement du palier arrière est le même que celui du palier avant du moteur, détaillé en D.As seen in Figure 1, the arrangement of the rear bearing is the same as that of the front bearing of the engine, detailed in D.

D'autre part, les dcux paliers, avant et arrière, sont lubrifies l'un et l'autre par le liquide pompé. La face de butée des coussinets comporte trois rainures à 120°, de manière à maintenir un film liquide constant, entre les faces de frottement. Ces rainures ne sont pas représentées sur la figure.On the other hand, the two bearings, front and rear, are both lubricated by the pumped liquid. The abutment face of the bearings has three grooves at 120 °, so as to maintain a constant liquid film, between the friction faces. These grooves are not shown in the figure.

Dans la forme de réalisation décrite, les éléments de pompe empilables sont au nombre de quatre, leur répartition est symétrique de part et d'autre de la partie centrale motrice : deux à l'avant et deux à l'arrière. Une telle disposition est avantageuse pour la répartition des efforts et du poids.In the embodiment described, there are four stackable pump elements, their distribution is symmetrical on either side of the central drive part: two at the front and two at the rear. Such an arrangement is advantageous for the distribution of forces and weight.

Cependant, il est possible de prévoir un nombre impair d'éléments. Par exemple, dans le cas de trois éléments de pompe, on préférera monter un élément d'un côté du moteur et les deux autres à l'autre extrémité plutôt que de les monter tous trois en un même bout d'arbre.However, it is possible to provide an odd number of elements. For example, in the case of three pump elements, it is preferable to mount one element on one side of the motor and the other two at the other end rather than mounting them all at the same end of the shaft.

Une telle pompe est conçue pour être employée indifféremment dans l'air : par exemple, en ligne, sur une canalisation, ou dans le liquide à pomper dans lequel elle est immergée sans dommage.Such a pump is designed to be used interchangeably in air: for example, in line, on a pipe, or in the liquid to be pumped in which it is immersed without damage.

Le liquide à pomper peut être par exemple de l'eau pure ou de l'eau contenant des sels ou des impuretés de nature à la rendre électriquement conductrice.The liquid to be pumped can for example be pure water or water containing salts or impurities such as to make it electrically conductive.

Le liquide peut être différent de l'eau, l'adaptation au liquide à pomper étant du domaine de l'homme de l'art.The liquid can be different from water, the adaptation to the liquid to be pumped being within the skill of the art.

L'exemple décrit constitue un modèle de pompe ambivalent du type "amphibie" fonctionnant aussi bien dans l'air que dans l'eau.The example described constitutes an ambivalent pump model of the "amphibious" type operating both in air and in water.

Elle est utilisable pour drainer l'eau en l'immergeant au fond d'une mare, d'une rivière, d'un puits etc.It can be used to drain water by submerging it at the bottom of a pond, a river, a well, etc.

Claims (9)

1. Pompe centrifuge du type multicellulaire incluant, dans un corps de pompe monobloc, au moins deux éléments de pompe empilables aptes à fonctionner par entraînement d'un moteur électrique refroidi par la circulation d'un fluide, caractérisée en ce que le fluide de refroidissement du moteur d'entraînement est le fluide pompé, ce qui a pour effet de lui procurer un fonctionnement ambivalent, dans deux milieux ambiants différents.1. Multicellular type centrifugal pump including, in a one-piece pump body, at least two stackable pump elements capable of operating by driving an electric motor cooled by the circulation of a fluid, characterized in that the coolant of the drive motor is the pumped fluid, which has the effect of providing it with ambivalent operation in two different ambient environments. 2. Pompe centrifuge multicellulaire ambivalente selon la revendication 1, caractérisée en ce que les éléments de pompe empilables sont disposés en extrémité, de part et d'autre dudit moteur d'entraînement, et en ce que le corps de pompe comprend dans la partie motrice au moins un conduit mettant en relation la cavité avant avec la cavité arrière de la pompe pour la circulation du fluide pompé destinée au redroidissement du moteur.2. Ambivalent multicellular centrifugal pump according to claim 1, characterized in that the stackable pump elements are arranged at the end, on either side of said drive motor, and in that the pump body comprises in the motor part at least one conduit connecting the front cavity with the rear cavity of the pump for the circulation of the pumped fluid intended for cooling the motor. 3. Pompe centrifuge du type multicellulaire à fonctionnement ambivalent selon la revendication 1 et la revendication 2, caractérisée en ce que les deux milieux ambiants différents étant l'air et l'eau, la pompe centrifuge est du type "amphibie".3. Centrifugal pump of the multicellular type with ambivalent operation according to claim 1 and claim 2, characterized in that the two different ambient environments being air and water, the centrifugal pump is of the "amphibious" type. 4. Pompe centrifuge selon les revendications 1 et 2, caractérisée en ce que les paliers du moteur d'entraînement des éléments de pompe sont lubrifiés exclusivement par le liquide pompé.4. Centrifugal pump according to claims 1 and 2, characterized in that the bearings of the drive motor of the pump elements are lubricated exclusively by the pumped liquid. 5. Pompe centrifuge selon les revendications 1, 2 et 4 dans laquelle chacun des paliers du moteur d'entraînement comprend au moins une chemise, un coussinet et une butée, caractérisée en ce que : - la chemise est entraînée par un crabot ; - le coussinet coopère avec la butée, portée par un support de butée et en ce que ladite butée est apte à être entraînée en rotation et est pourvue de moyens d'auto-alignement. 5. Centrifugal pump according to claims 1, 2 and 4 in which each of the bearings of the drive motor comprises at least one jacket, one bearing and one stop, characterized in that: - the shirt is driven by a dog; - The bearing cooperates with the stop, carried by a stop support and in that said stop is able to be driven in rotation and is provided with self-alignment means. 6. Pompe centrifuge selon la revendication 5, caractérisée en ce que les moyens d'auto-alignement dont est pourvue ladite butée résident dans le fait que, la forme de ladite butée étant celle d'une bague, d'une part son pourtour de grand diamètre est creusé d'au moins trois encoches équidistantes et d'autre part, son bord circonférentiel de petit diamètre est taillé en chanfrein sur l'une de ses faces planes, en sorte que lesdites encoches coopèrent avec un nombre égal de griffes de retenue solidaires du support de butée et que ledit chanfrein coopère avec un joint torique sur lequel il est maintenu en appui alors que ladite bague est entraînée en rotation par lesdites griffes qui la retiennent prisonnière.6. centrifugal pump according to claim 5, characterized in that the self-alignment means which is provided with said stop resides in the fact that, the shape of said stop being that of a ring, on the one hand its periphery of large diameter is hollowed out with at least three equidistant notches and on the other hand, its circumferential edge of small diameter is cut in chamfer on one of its flat faces, so that said notches cooperate with an equal number of retaining claws integral with the abutment support and that said chamfer cooperates with an O-ring on which it is held in abutment while said ring is rotated by said claws which hold it captive. 7. Pompe centrifuge selon les revendications 5 et 6, caractérisée en ce que lesdites griffes de retenue sont constituées par une pièce souple comportant au moins trois languettes à 120° pour coopérer avec les encoches de la bague de butée.7. Centrifugal pump according to claims 5 and 6, characterized in that said retaining claws consist of a flexible piece comprising at least three tongues at 120 ° to cooperate with the notches of the stop ring. 8. Pompe centrifuge selon la revendication 2, caractérisée en ce que lesdits éléments empilables sont répartis symétriquement de part et d'autre du moteur d'entraînement commun.8. Centrifugal pump according to claim 2, characterized in that said stackable elements are distributed symmetrically on either side of the common drive motor. 9. Pompe centrifuge selon la revendication 4, caractérisée en ce que le matériau de réalisation de la chemise, du coussinet et de la butée est un matériau du type céramique.9. Centrifugal pump according to claim 4, characterized in that the material for producing the jacket, the bearing and the stop is a material of the ceramic type.
EP79400651A 1978-09-22 1979-09-18 Bearing for ambivalent centrifugal pump Expired EP0009449B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7827164A FR2436898A1 (en) 1978-09-22 1978-09-22 AMBIVALENT CENTRIFUGAL PUMP
FR7827164 1978-09-22

Publications (2)

Publication Number Publication Date
EP0009449A1 true EP0009449A1 (en) 1980-04-02
EP0009449B1 EP0009449B1 (en) 1982-05-05

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ID=9212906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400651A Expired EP0009449B1 (en) 1978-09-22 1979-09-18 Bearing for ambivalent centrifugal pump

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EP (1) EP0009449B1 (en)
DK (1) DK394179A (en)
ES (1) ES484345A1 (en)
FR (1) FR2436898A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014103A1 (en) * 1980-04-12 1981-10-15 Hermetic-Pumpen Gmbh, 7803 Gundelfingen Pump set with electromotor between two pumps - has fluid passing through motor from first to second pump
DE3239601A1 (en) * 1981-11-03 1983-05-11 K. Rütschi AG Pumpenbau, 5200 Brugg Submersible canned-motor pump
DE3539883A1 (en) * 1985-09-18 1987-03-26 Hermetic Pumpen Gmbh Self-priming centrifugal pump
GB2244095A (en) * 1990-05-17 1991-11-20 Hwang Cheng Luen Aquarium pump arrangement
US5494418A (en) * 1992-04-14 1996-02-27 Ebara Corporation Pump casing made of sheet metal
EP0719941A1 (en) * 1994-12-27 1996-07-03 Ebara Corporation Double-suction pump
WO2001020168A1 (en) * 1999-09-16 2001-03-22 Gwj Engineering Gbr Turboblower
GB2414278A (en) * 2004-05-18 2005-11-23 Weir Pumps Ltd Pump assembly with driving means located in a pump casing
WO2006021560A1 (en) * 2004-08-23 2006-03-02 Frank Mohn Flatøy As Rotodynamic fluid machine
JP2015089697A (en) * 2013-11-05 2015-05-11 トヨタ自動車株式会社 Vehicular voice recognition apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB410322A (en) * 1933-05-31 1934-05-17 Daniel James Moran Pump assemblies
FR2175388A5 (en) * 1972-03-10 1973-10-19 Pierburg Autogeraetebau Kg
FR2342416A1 (en) * 1976-02-27 1977-09-23 Materiel Telephonique SELF-PRIMING MULTICELLULAR CENTRIFUGAL PUMP
DE2709673A1 (en) * 1977-03-05 1978-09-07 Licentia Gmbh Bearing cap retained in holder by clamping glass - has radial projections on outer surface extending between clamping glass arms

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB410322A (en) * 1933-05-31 1934-05-17 Daniel James Moran Pump assemblies
FR2175388A5 (en) * 1972-03-10 1973-10-19 Pierburg Autogeraetebau Kg
FR2342416A1 (en) * 1976-02-27 1977-09-23 Materiel Telephonique SELF-PRIMING MULTICELLULAR CENTRIFUGAL PUMP
DE2709673A1 (en) * 1977-03-05 1978-09-07 Licentia Gmbh Bearing cap retained in holder by clamping glass - has radial projections on outer surface extending between clamping glass arms

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014103A1 (en) * 1980-04-12 1981-10-15 Hermetic-Pumpen Gmbh, 7803 Gundelfingen Pump set with electromotor between two pumps - has fluid passing through motor from first to second pump
DE3239601A1 (en) * 1981-11-03 1983-05-11 K. Rütschi AG Pumpenbau, 5200 Brugg Submersible canned-motor pump
DE3539883A1 (en) * 1985-09-18 1987-03-26 Hermetic Pumpen Gmbh Self-priming centrifugal pump
GB2244095A (en) * 1990-05-17 1991-11-20 Hwang Cheng Luen Aquarium pump arrangement
US5494418A (en) * 1992-04-14 1996-02-27 Ebara Corporation Pump casing made of sheet metal
EP0747599A1 (en) * 1992-04-14 1996-12-11 Ebara Corporation Pump casing made of sheet metal
EP0719941A1 (en) * 1994-12-27 1996-07-03 Ebara Corporation Double-suction pump
WO2001020168A1 (en) * 1999-09-16 2001-03-22 Gwj Engineering Gbr Turboblower
GB2414278A (en) * 2004-05-18 2005-11-23 Weir Pumps Ltd Pump assembly with driving means located in a pump casing
WO2006021560A1 (en) * 2004-08-23 2006-03-02 Frank Mohn Flatøy As Rotodynamic fluid machine
JP2015089697A (en) * 2013-11-05 2015-05-11 トヨタ自動車株式会社 Vehicular voice recognition apparatus

Also Published As

Publication number Publication date
DK394179A (en) 1980-03-23
FR2436898B1 (en) 1982-05-14
EP0009449B1 (en) 1982-05-05
ES484345A1 (en) 1980-05-16
FR2436898A1 (en) 1980-04-18

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