EP2050967B1 - Tauchpumpe - Google Patents

Tauchpumpe Download PDF

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Publication number
EP2050967B1
EP2050967B1 EP08166737A EP08166737A EP2050967B1 EP 2050967 B1 EP2050967 B1 EP 2050967B1 EP 08166737 A EP08166737 A EP 08166737A EP 08166737 A EP08166737 A EP 08166737A EP 2050967 B1 EP2050967 B1 EP 2050967B1
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EP
European Patent Office
Prior art keywords
pump
plate
liquid
enclosure
cavity
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Active
Application number
EP08166737A
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English (en)
French (fr)
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EP2050967A1 (de
Inventor
Patrick Ballu
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Exel Industries SA
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Exel Industries SA
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Publication of EP2050967A1 publication Critical patent/EP2050967A1/de
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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
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
    • 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
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps

Definitions

  • the present invention relates to a submersible pump, for discharging liquids loaded solid particles or clear liquids, that is to say, little or no solid particles loaded.
  • a submersible pump for discharging a liquid laden with solid particles is generally intended to evacuate the particles out of the volume to be treated.
  • the solid particles to be discharged may have a generally spherical shape whose diameter may reach 30 mm.
  • the pump is immersed in the volume to be treated.
  • the submerged pump discharges the liquid with the particles it contains.
  • Such a pump also allows to evacuate a clear liquid.
  • the height of residual liquid in the volume to be dried is relatively high, since the level of the inlet of the pump with respect to the ground must be greater than the maximum size of the particles to be evacuated.
  • a submersible pump for discharging a clear liquid has a submerged inlet port closer to the ground than that of a pump for charged liquid, which reduces the height of residual liquid in the volume to dry.
  • a pump for clear liquid does not allow to evacuate solid particles of significant size.
  • a submersible pump of the prior art is generally dedicated either to the evacuation of a liquid laden with solid particles, or to the almost complete evacuation of a clear liquid, but not to these two uses.
  • the document DE 10 2005 031420 A1 describes a submersible pump with an adjustable device for configuring this pump either for the evacuation of a liquid laden with solid particles, or for the almost complete evacuation of a clear liquid.
  • This pump therefore allows the user to perform both types of evacuation.
  • This pump however, has the disadvantage of achieving the said convertibility using a bayonet system that can play and deteriorate.
  • the present invention aims to remedy these drawbacks by also proposing a submersible and reversible pump for discharging charged liquids or clear liquids.
  • a wall of the enclosure is defined by a base having at least one inlet communicating with the outside of the enclosure, and the pump comprises a plate adapted to be mounted reversibly close to the base in two distinct configurations, a first mounting configuration being intended for the passage of a liquid laden with solid particles, the other mounting configuration being intended for the passage of a clear liquid, the enclosure having a clear volume between the inlet orifice and the outlet nozzle, so as to allow the flow of the liquid laden with solid particles.
  • the plate has at least a first opening and the plate is able to form with the base at least a first cavity, the dimensions of the or each first opening and the or each first cavity being adapted to the passage of the charged liquid. solid particles.
  • the plate has at least a second opening and the plate is adapted to form with the base at least a second cavity, the dimensions of the or each second opening and the or each second cavity being adapted to the passage of the clear liquid.
  • the pump which is the subject of the invention therefore makes it possible, on the one hand, to discharge a liquid loaded with particles of significant size and, on the other hand, to minimize the height of residual liquid in a volume to be dried.
  • the conversion of the pump between its two configurations is achieved by simple operations.
  • the figure 1 illustrates a submersible pump P formed by a high half-housing 1 and a low half-housing 2.
  • the half-housing 1 serves to protect the electrical components and the gripping of the pump P by means of a handle 15.
  • the half-housing 2 comprises an enclosure 21 intended to contain the liquid to be discharged.
  • the top and bottom half-casings 2 are formed by solid walls, so as to make the chamber 21 impervious to liquids to be evacuated.
  • the enclosure 21 may be partially or totally immersed in a liquid.
  • the terms up, down, up and down refer to the service position of the pump, as illustrated by the Figures 1 and 2 .
  • the pump P comprises a base 3 and a plate 4 at which the liquid to be discharged is sucked.
  • the pump P rests on the base 3 and on the plate 4.
  • the plate 4 is housed in the free volume inside the base 3, if although the plate is not visible on the figure 1 in front view, but is on the figure 3 .
  • the pump P rests solely on the plate 4 which forms a projection under the base 3.
  • the upper half-housing 1 is equipped with an outlet nozzle 13 through which the liquid L may be discharged.
  • a pipe 14 may be connected to this endpiece 13 in order to convey the liquid L away from the site to be treated.
  • the tip 13 is disposed on the upper face of the half-case 1. According to a variant not shown, the tip 13 may be attached to a side face of the pump P.
  • the enclosure 21 is equipped with cable glands 10 and 11 for respectively receiving a power supply cable 7 of the pump P and a not shown control cable of the pump P.
  • the base 3 is affixed to the bottom of the lower half-housing 2.
  • the enclosure 21 defines a main volume 20, in which is housed an electric motor 22 supplied by the cable 7.
  • the motor 22 comprises a rotary output shaft 225 and extending along an axis Z 22 .
  • Z axis 22 is vertical on the figure 2 and when the pump P rests on a horizontal ground.
  • a vane wheel 5 is secured to the output shaft 225 via a not shown nut.
  • the impeller 5 rotates about the Z axis 22 when the output shaft 225 is rotated by the motor 22.
  • the impeller 5 is centrifugal type here and it allows to set in motion the liquid to be evacuated according to flow lines symbolized by the arrows L to Figures 3 and 4 .
  • the plate 4 is able to be mounted reversibly on the base 3.
  • the mounting configuration illustrated by the figure 4 is intended for the passage of a liquid loaded with solid particles, while the other mounting configuration, illustrated by the figure 3 , is intended for the passage of a clear liquid.
  • the main difference between the pump P configurations to evacuate a loaded liquid or a clear liquid resides in the dimensions of the respective flow sections delimited by the geometry of each face of the plate 4.
  • the plate 4 comprises a generally elliptical central plate 40 having a first face 41 and a second face 42 generally flat and parallel to each other.
  • the plate 40 is pierced with four holes 43, two of which are visible in section at the figure 8 , intended for the passage of a clear liquid or a charged liquid. This is why each of the holes 43 has a circular shape with a diameter D 43 greater than the maximum particle size to be evacuated.
  • Six feet 45 extend from the second face 42 around the plate 40 and perpendicular thereto.
  • the flanges 451 of the six feet 45 which extend substantially parallel to the plate 40, are coplanar and allow the pump P to rest stably on a flat floor in the configuration of the figures 2 and 4 .
  • Holes 452 are made on the flanges 451 to connect the inner recess of each foot 45 outside the pump P, which allows the flow of liquid from the feet 45 and thus prevents stagnation of the liquid.
  • the six feet 45 define between them, two by two, six notches 47 similar each having a width L 47 and a height H 47 .
  • Each notch 47 defines a first opening limiting the size of the particles that can be sucked when pumping a liquid loaded into the configuration of the particles. figures 2 and 4 .
  • the pump P is configured to evacuate a charged liquid.
  • the plate 4 comprises abutments 46 which extend above the first face 41 and which are separated in pairs by recesses 48.
  • the outer surfaces of the stops 46 define coplanar soles 461, so that they allow at the pump P to rest stably on a flat floor.
  • the plate 4 coincides perfectly with the plane defined by flanges 361 of abutments 36 belonging to the base 3.
  • Each recess 48 has an elongated curvilinear shape and a low height H 48 in front of the height H 47 .
  • the height H 48 strongly limits the size solid particles which can be sucked up during the pumping in the configuration of the figures 1 and 3 .
  • the recesses 48 of the plate 4 coincide with recesses 38 of the base 3, which avoids generating a flow restriction at the liquid passage, while maximizing the bearing surface of the pump P On the ground.
  • the pump P is configured to discharge a clear liquid or, at least, a liquid loaded with particles having a size smaller than the height H 48 .
  • the feet 45 and the abutments 46 project on either side of the plate 40, the latter is able to form with the base 3 a first cavity 31, visible at the figure 4 , and a second cavity 32, visible at the figure 3 .
  • the plate 40 is common to the first 31 and second 32 cavities.
  • the first cavity 31 is higher than the second cavity 32, and higher than the maximum size of the particles to be discharged.
  • the base 3 is substantially composed of two bells, high 30 and low 39, nested one inside the other.
  • the wall of the lower bell 39 defines a cylindrical housing with an elliptical base intended to receive the plate 4.
  • the shape of the upper bell 30 consists essentially of the juxtaposition of a cylinder with a circular base and a prism with a base triangular axes parallel to each other and to the axis of the lower bell 39.
  • the cylindrical portion of the bell 30 is intended to receive the impeller 5, as shown by the Figures 3 and 4 while the prismatic portion of the bell 30 forms an open volume 23 which allows the flow of a liquid L, possibly charged with relatively large particles.
  • the upper contours of the low bells 39 and 30 each have a ring 35 for positioning the bottom half-housing 2 on the base 3.
  • the connection thus formed is completed by a not shown joint disposed in a groove 351 of the ring 35, so as to make this connection tight to the liquid to be discharged.
  • the base 3 comprises a flat partition 37 which separates the volumes defined by the bells 30 and 39.
  • the partition 37 has an inlet orifice 33, through which the liquid L sucked can penetrate into the enclosure 21.
  • the orifice entry 33 presents here a circular shape of diameter D 33 greater than the maximum size of the particles to be evacuated.
  • the inlet orifice 33 is in line with the Z axis 22 and the four holes 43 formed in the plate 40 are distributed symmetrically with respect to the Z axis 22 .
  • the location of the holes 43 is defined so as to avoid direct access by the user to the impeller 5, when the pump P is in working order. This secures the pump P and preserve the wheel 5 and the motor 22. In this case, none of the holes 43 faces the inlet port 33 of the pump P.
  • the orifice 33 communicates the enclosure 21 with the first cavity 31 or with the second cavity 32, respectively, depending on whether the pump P is configured for a charged liquid or for a clear liquid.
  • ribs 391 are arranged at regular intervals around the perimeter of the inner wall of the lower bell 39.
  • the ribs 391 each have a flat rectangular shape arranged with their upper edge integral with the inner wall of the lower bell 39.
  • the lower edge 392 of the ribs 391, that is to say the edge opposite the upper bell 30, serves as a stop means for positioning the plate 40, and therefore the plate 4, with respect to the base 3, which allows to form the first cavity 31 or the second cavity 32 and to match the respective planes of the flanges 361 and 461 in the configuration for clear liquids.
  • the ribs 391 act as spacers between the inlet orifice 33 and the plate 4. The position of each set of ribs 391 is defined so that the ribs 391 fit into the notches 47 when the plate 4 is mounted in configuration for clear liquid.
  • the chamber 21, including the volume defined by the upper bell 30 of the base 3, has a volume 23 clear of any obstacle between the inlet port 33 and the outlet nozzle 13. This is essentially through volume 23 flowing liquids L to evacuate.
  • Circulation of the particles in the pump P must not be impeded by any obstacle, since it is desired to evacuate them through the pipe 14. This is why the respective flow sections of the first cavity 31, of the inlet orifice 33 and 23 each have a minimum dimension greater than the maximum size of the particles to be evacuated.
  • the pump P is intended to treat the consequences of flooding and river overflow, so that it is sized to discharge water loaded with pebbles up to 30 mm in their largest dimension.
  • the minimum dimension of the flow sections mentioned above may be greater than 32 mm.
  • the impeller 5 and the motor 22 are sized to pump a liquid thus charged.
  • the diameter D 43 of the holes 43 is greater than 30 mm.
  • the width L 47 and the height H 47 of the notches 47 are provided slightly greater than the maximum size of the particles to be discharged but slightly smaller than the dimensions of the flow sections downstream.
  • the notches 47 thus fulfill the function of sieves by preventing too large particles from entering the pump P, where they might become trapped. In addition, once the notches are crossed, the particles are guaranteed to be evacuated.
  • the impeller 5 is made of a fiber-filled polymer capable of withstanding abrasion and shocks by particles, such as pebbles, carried by the liquid to be discharged. Other parts likely to come into contact with these particles may also be made of fiber-filled polymer.
  • the plate 4 is fixed on the base 3 by means of fastening elements which here consist of two screws 6 screwed through holes 44 of the plate 4 and into threads formed in two fastening sleeves 34 integral with the 3.
  • the screws 6 are arranged to be accessible from the outside of the enclosure 21 and the pump P.
  • the user can quickly dismantle the plate 4, turn it over, then reassemble it on the base 3, to change the configuration of the pump P.
  • the first face 41 and the second face 42 each comprise information 49 on the mounting configuration of the plate 4, to guide the user during assembly and / or disassembly of the pump P.
  • This information 49 respectively " clear water “and” charged water “correspond to the nature of the liquid L to be discharged and must be visible under the pump.
  • faces 41 and 42 also include information, not shown, explaining the maneuvers to operate to change configuration.
  • the pump object of the invention thus allows to evacuate either a clear liquid or a charged liquid, the conversion between these two uses being particularly simple to operate.
  • the user is not obliged to choose the type of pump to buy, nor to buy both types of pump.
  • the invention also has the advantage of increasing the series of production, thus of reducing the unit costs, since all the parts of a pump according to the invention are common to the two uses of such a pump, to know to evacuate a clear liquid or a loaded liquid.

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

Claims (11)

  1. Tauchpumpe (P) zur Ableitung von Flüssigkeiten (L), umfassend:
    - ein Behältnis (21), das mindestens ein Ausgangsstück (13) für die Flüssigkeit (L) aufweist, das mit dem Äußeren des Behältnisses (21) in Verbindung steht,
    - ein elektrisches Betätigungselement (22) mit einer drehbaren (Z22) Ausgangswelle (225),
    - ein Schaufelrad (5), das in dem Behältnis (21) angeordnet ist und von dem Betätigungselement (22) angetrieben wird und sich um die Achse (Z22) der Ausgangswelle (225) drehen kann,
    dadurch gekennzeichnet, dass eine Wand (37) des Behältnisses (21) von einer Grundplatte (3) definiert ist, die mindestens eine Eingangsöffnung (33) aufweist, die mit dem Äußeren des Behältnisses (21) in Verbindung steht, und dass sie eine Platte (4) umfasst, die umkehrbar in der Nähe der Grundplatte (3) nach zwei unterschiedlichen Ausführungen montiert werden kann, wobei eine erste Montageausführung (Figuren 2 und 4) für den Durchgang einer Flüssigkeit (L), die mit Festpartikeln versetzt ist, bestimmt ist, wobei die andere Montageausführung (Figuren 1 und 3) für den Durchgang einer klaren Flüssigkeit bestimmt ist, wobei das Behältnis (21) ein freies Volumen (23) zwischen der Eingangsöffnung (33) und dem Ausgangsstück (13) aufweist, um das Abfließen der mit Festpartikeln versetzten Flüssigkeit (L) zu ermöglichen,
    dass die Platte (4) mindestens eine erste Öffnung (47) aufweist, dass die Platte mit der Grundplatte (3) mindestens einen ersten Hohlraum (31) bilden kann, wobei die Abmessungen (L47, H47) der oder jeden ersten Öffnung (47) und des oder jedes ersten Hohlraums (31) für den Durchgang der mit Festpartikeln versetzten Flüssigkeit (L) angepasst sind,
    dass die Platte (4) mindestens eine zweite Öffnung (48) aufweist,
    und dass die Platte (4) mit der Grundplatte (3) mindestens einen zweiten Hohlraum (32) bilden kann, wobei die Abmessungen (H48) der oder jeder zweiten Öffnung (48) und des oder jedes zweiten Hohlraums (32) an den Durchgang der klaren Flüssigkeit (L) angepasst sind.
  2. Pumpe (P) nach Anspruch 1, dadurch gekennzeichnet, dass die Platte (4) einen Teil (40) aufweist, der dem ersten (31) und dem zweiten Hohlraum (32) gemeinsam ist, wobei der gemeinsame Teil mit mindestens einem Loch (43) für den Durchgang der mit Partikeln versetzten oder klaren Flüssigkeit (L) versehen ist.
  3. Pumpe (P) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass Anschlagmittel (391) auf der Grundplatte (3) und/oder auf der Platte (4) vorgesehen sind, um die Platte (4) in Bezug zur Grundplatte (3) zu positionieren, um den ersten Hohlraum (31) oder den zweiten Hohlraum (32) zu bilden.
  4. Pumpe (P) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Wand (37) den Boden des Behältnisses (21) definiert, und dass sich das Ausgangsstück (13) auf dem oberen Teil (1) des Behältnisses (21) befindet, wenn sich die Pumpe (P) in Verwendungsposition befindet.
  5. Pumpe (P) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Achse (Z22) der Ausgangswelle (225) vertikal ist, wenn sich die Pumpe (P) in Verwendungsposition befindet, und dass das Schaufelrad (5) Schaufeln mit Zentrifugalwirkung umfasst.
  6. Pumpe (P) nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass sich die Eingangsöffnung (33) im rechten Winkel zur Achse (Z22) der Ausgangswelle (225) befindet, und dass die Platte (4) mehrere verteilte Löcher (43) für den Durchgang von Flüssigkeit (L) aufweist, wobei die Löcher (43) symmetrisch zur Achse (Z22) der Ausgangswelle (225) angeordnet sind.
  7. Pumpe (P) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die jeweiligen Ausgabequerschnitte des ersten Hohlraums (31), der Eingangsöffnung (33) und des Volumens (23) jeweils eine Mindestabmessung über 30 mm aufweisen.
  8. Pumpe (P) nach Anspruch 7, dadurch gekennzeichnet, dass die Abmessungen (H47, L47) der oder jeder ersten Öffnung (47) kleiner als die Abmessungen der jeweiligen Ausgabequerschnitte des ersten Hohlraums (31 der Eingangsöffnung (33) und des Volumens (23) sind, um das Einklemmen von zu beseitigenden Festpartikeln in der Pumpe (P) zu vermeiden.
  9. Pumpe (P) nah einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Platte (4) mindestens eine Information (49) über ihre Montagekonfiguration (Figuren 1, 2, 3, 4), vorzugsweise über die eine (41) und/oder die andere (42) ihrer Seiten, je nach der Art der abzuleitenden Flüssigkeit (L), umfasst.
  10. Pumpe (P) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Platte (4) auf der Grundplatte (3) mit Hilfe von Befestigungselementen (6) befestigt ist, die von außerhalb des Behältnisses (21) aus zugänglich sind.
  11. Pumpe (P) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens eine Seite (41, 42) der Platte (4) eine ebene Stützfläche (451, 461) aufweist, die dazu bestimmt ist, die Pumpe (P) stabil auf einem ebenen Boden zu halten.
EP08166737A 2007-10-18 2008-10-16 Tauchpumpe Active EP2050967B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0758410A FR2922609B1 (fr) 2007-10-18 2007-10-18 Pompe submersible

Publications (2)

Publication Number Publication Date
EP2050967A1 EP2050967A1 (de) 2009-04-22
EP2050967B1 true EP2050967B1 (de) 2010-12-08

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Country Status (6)

Country Link
US (1) US8083502B2 (de)
EP (1) EP2050967B1 (de)
CN (1) CN101413516B (de)
AT (1) ATE491095T1 (de)
DE (1) DE602008003881D1 (de)
FR (1) FR2922609B1 (de)

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WO2016008510A1 (de) 2014-07-15 2016-01-21 Alfred Kärcher Gmbh & Co. Kg Tauchpumpe

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WO2016008510A1 (de) 2014-07-15 2016-01-21 Alfred Kärcher Gmbh & Co. Kg Tauchpumpe

Also Published As

Publication number Publication date
ATE491095T1 (de) 2010-12-15
CN101413516A (zh) 2009-04-22
CN101413516B (zh) 2012-05-30
DE602008003881D1 (de) 2011-01-20
US8083502B2 (en) 2011-12-27
EP2050967A1 (de) 2009-04-22
FR2922609B1 (fr) 2010-02-19
US20090116984A1 (en) 2009-05-07
FR2922609A1 (fr) 2009-04-24

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