EP0653564B1 - Pompe résistante à l'engorgement - Google Patents

Pompe résistante à l'engorgement Download PDF

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Publication number
EP0653564B1
EP0653564B1 EP94103553A EP94103553A EP0653564B1 EP 0653564 B1 EP0653564 B1 EP 0653564B1 EP 94103553 A EP94103553 A EP 94103553A EP 94103553 A EP94103553 A EP 94103553A EP 0653564 B1 EP0653564 B1 EP 0653564B1
Authority
EP
European Patent Office
Prior art keywords
impeller
centrifugal pump
collar
pump according
inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94103553A
Other languages
German (de)
English (en)
Other versions
EP0653564A1 (fr
Inventor
Manfred Zelder
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.)
Wilo SE
Original Assignee
Wilo GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wilo GmbH filed Critical Wilo GmbH
Publication of EP0653564A1 publication Critical patent/EP0653564A1/fr
Application granted granted Critical
Publication of EP0653564B1 publication Critical patent/EP0653564B1/fr
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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2238—Special flow patterns
    • F04D29/225—Channel wheels, e.g. one blade or one flow channel
    • 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
    • F04D7/045—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 with means for comminuting, mixing stirring or otherwise treating

Definitions

  • the invention relates to a centrifugal pump with a single-bladed impeller whose the drive shaft averted central suction mouth with the inlet opening of the Pump chamber is aligned, the inlet opening a annular collar that forms in the impeller interior protrudes so that the inner end of the Impeller blade with the outer jacket of the collar forms a narrow gap.
  • Free flow pumps continue to have the peculiarity that Store solids in the middle of the impeller and Reduce free flow so that the pump in throttled operation is running. The pump itself is blocked not because the impeller with its end face far from the Wall of the pump housing is removed.
  • Impellers with better efficiency are Single channel impellers that are only a single blade have. These impellers achieve efficiencies of over 70% if they are spatially curved. This spatial curvature means that the impellers are not can be turned off to other operating points to reach. Therefore one needs for each characteristic separate impeller and its own model in the foundry. Cylindrical impellers can be turned and have one somewhat lower efficiency than that spatially curved.
  • the object of the invention is to provide a centrifugal pump type mentioned so that they improve simple design and manufacture to a high degree is free from constipation, Solids seized from the impeller automatically.
  • Such a pump in particular does not become blocked Solids in the pumped medium that act as "pump shock" are referred to, such as plastic bags and Tights.
  • the pump is therefore particularly suitable for Waste water of various types.
  • that is cylindrical impeller of the pump according to the invention turnable.
  • the Collar-forming insert at least in the form of a sleeve Area of the inlet that lines the impeller is facing.
  • the impeller facing bottom of the chamber side wall in particular by a bottom plate, a spiral groove around the inlet forms around by between the impeller and Chamber side wall penetrating solids to the outside are movable. Be through such a spiral Solids that are between the bottom edge of the Squeeze the impeller and the chamber side wall through the spiral taken along and moved radially outwards, so that the impeller automatically gets stuck Solids free.
  • the bottom plate facing end of the inner end of the Impeller blade above the ring gear with a small clearance lies. This should be on the outside of the ring gear border the spiral groove.
  • the Width of the teeth and thus the ring gear about the same the width of the face of the inner end of the Impeller blade is, as well as the impeller blade end with is provided with a radius so that the fibrous material much can be drawn in more easily.
  • a centrifugal pump has a pump housing 1, the one Pump chamber 2 forms in which an impeller 3 is mounted.
  • the impeller 3 is not driven by a shaft 4 illustrated electric motor driven.
  • the cylindrical and thus rotatable impeller 3 only has a single curved blade 7, the inside of which, i.e. The impeller axis 8 closer end 7a in close proximity of the edge of the inlet 6 rotates.
  • the inner edge of the inlet 6 an annular collar 9, the a few millimeters in the impeller 3 and thus in the Suction mouth of the impeller 3 extends into it so that the collar 9 protrudes the inner end 7a by a few millimeters.
  • the collar 9 preferably covers the inner one End 7a by 2 to 5, preferably by 2.5-3 millimeters.
  • the collar 9 can directly from the pump chamber side wall 5 be formed or from a base plate 11 or an insert fastened in the base plate 11 12 ( Figure 1).
  • the insert 12 can be socket-shaped line inlet 6.
  • the insert 6 is on the inside the pump chamber side wall 5 from a spiral groove 13 surround the one with respect to the circulating liquid such spiral direction A has that between the Impeller blade and chamber side wall penetrating Solids are driven radially outward, like this the arrowed, dashed flow direction 14 in Figure 3 shows.
  • the width b of the Sprocket approximately equal to the width B of the end face 16 is.
  • the teeth of the ring gear 15 are approximately radial to the impeller axis 8, i.e. the (straight) Tooth flank lines of the teeth are arranged approximately radially.
  • impeller blade front side a radius at the lower end receives, which causes the fibrous materials through the Impeller blade is retracted and forced to move to move outwards through the base plate design.
  • the transition from the inner end 7a to the end face 16 is therefore rounded off, the rounding off the radius R having.

Claims (9)

  1. Pompe centrifuge avec une roue mobile (3) monopalette, dont la bouche d'aspiration médiane écartée de l'arbre moteur (4) est alignée avec l'orifice d'admission (6) de la chambre (2) de pompe, l'orifice d'admission (6) formant une collerette (9) annulaire qui fait saillie dans l'intérieur de la roue mobile de telle manière que l'extrémité intérieure (7a) de la palette (7) de la roue mobile forme avec la chemise extérieure de la collerette (9) une fente étroite (largeur S),
    caractérisée en ce qu'une couronne dentée (15) coaxiale, dont les dents sont orientées sensiblement radialement, est adjacente à la face extérieure de la collerette (9).
  2. Pompe centrifuge selon la revendication 1,
    caractérisée en ce qu'une plaque de fond (11) est logée dans la paroi latérale (5) de la chambre de pompe qui présente l'admission (6) et forme la collerette (9) directement ou par l'intermédiaire d'un insert (12).
  3. Pompe centrifuge selon la revendication 2,
    caractérisée en ce que l'insert (12) formant la collerette (9) recouvre extérieurement en forme de douille au moins la zone de l'admission (6) qui est tournée vers la roue mobile (3).
  4. Pompe centrifuge selon l'une des revendications précédentes,
    caractérisée en ce que le fond de la paroi latérale (5) de la chambre tourné vers la roue mobile (3) forme, en particulier par la plaque de fond (11) , une rainure hélicoïdale (13) autour de l'admission (6), par laquelle les corps solides pénétrant entre la roue mobile (3) et la paroi latérale (5) de la chambre peuvent être déplacés vers l'extérieur.
  5. Pompe centrifuge selon l'une des revendications précédentes,
    caractérisée en ce que la couronne dentée (15) coaxiale est adjacente à la face extérieure de la collerette sur la plaque de fond (11).
  6. Pompe centrifuge selon la revendication 5,
    caractérisée en ce que la face frontale (16), tournée vers la plaque de fond (11), de l'extrémité intérieure (7a) de la palette (7) de la roue mobile tourne au-dessus de la couronne dentée (15) à faible écartement.
  7. Pompe centrifuge selon la revendication 5 ou 6,
    caractérisée en ce que la rainure hélicoïdale (13) est adjacente à la face extérieure de la couronne dentée (15).
  8. Pompe centrifuge selon l'une des revendications 5 à 7,
    caractérisée en ce que la largeur (b) des dents et donc de la couronne dentée (15) est sensiblement égale à la largeur (B) de la face frontale (16) de l'extrémité intérieure (7a) de la palette (7) de la roue mobile.
  9. Pompe centrifuge selon l'une des revendications précédentes,
    caractérisée en ce que l'extrémité frontale inférieure de la face avant de la palette de la roue mobile présente un arrondi d'un rayon (R) par lequel sont insérées des matières textiles.
EP94103553A 1993-11-15 1994-03-09 Pompe résistante à l'engorgement Expired - Lifetime EP0653564B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4338931A DE4338931C2 (de) 1993-11-15 1993-11-15 Verstopfungsfreie Kreiselpumpe
DE4338931 1993-11-15

Publications (2)

Publication Number Publication Date
EP0653564A1 EP0653564A1 (fr) 1995-05-17
EP0653564B1 true EP0653564B1 (fr) 1998-05-20

Family

ID=6502608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103553A Expired - Lifetime EP0653564B1 (fr) 1993-11-15 1994-03-09 Pompe résistante à l'engorgement

Country Status (4)

Country Link
US (1) US5516261A (fr)
EP (1) EP0653564B1 (fr)
AT (1) ATE166433T1 (fr)
DE (2) DE4338931C2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6921242B2 (en) * 2001-07-10 2005-07-26 Urs Blattmann Centrifugal slurry pump
DE20114891U1 (de) * 2001-09-10 2001-11-15 Grundfos As Abwasserkreiselpumpe
SE0302752L (sv) * 2003-10-20 2005-02-15 Itt Mfg Enterprises Inc Centrifugalpump
US7037069B2 (en) * 2003-10-31 2006-05-02 The Gorman-Rupp Co. Impeller and wear plate
SE526557C2 (sv) * 2004-04-15 2005-10-11 Pumpex Ab Kanalhjul
SE527818C2 (sv) * 2005-06-17 2006-06-13 Itt Mfg Enterprises Inc Pump för pumpning av förorenad vätska
MX2010002401A (es) * 2007-09-04 2010-03-25 Envirotech Pumpsystems Inc Placa de desgaste para bomba centrifuga.
DE102008016476A1 (de) * 2008-03-31 2009-10-01 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit einer Pumpe zur Förderung eines Mediums
US8118244B2 (en) * 2010-03-11 2012-02-21 Vaughan Company, Inc. Internal cutter on submersed mixer
BR112013001314A2 (pt) 2010-07-21 2016-05-17 Itt Mfg Entpr Llc dispositivo de redução de desgaste para equipamentos rotativos de manuseio de sólidos
AU2018348789A1 (en) * 2017-10-12 2021-06-17 Weir Minerals Australia Ltd Inlet component for a slurry pump

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1990672U (de) * 1968-08-01 Blum, Albert, 5201 Scheiderhöhe/DE Schmutzwasserpumpe
DE240859C (de) * 1911-04-14 1911-11-18 Kreiselpumpe für fördergut mit festen bestandteilen
US1718396A (en) * 1924-01-12 1929-06-25 Raymond Guy Palmer Centrifugal pump
DE614426C (de) * 1933-09-21 1935-06-07 A D Sihl A G Vorm A Schmid Mas Kreiselpumpe fuer verunreinigte Fluessigkeiten
US2245035A (en) * 1939-02-13 1941-06-10 American Well Works Centrifugal sludge pump
US2265758A (en) * 1940-05-29 1941-12-09 Buffalo Pumps Inc Pump
US3020850A (en) * 1958-02-27 1962-02-13 Meckum Engineering Inc Dredge pump seal
AT211773B (de) * 1958-07-15 1960-11-10 Tornado A G Elektrischer Staubsauger
DE1137629B (de) * 1959-04-02 1962-10-04 Georg Volland Dr Ing Einkanalrad-Kreiselpumpe, insbesondere zur Foerderung von Abwaessern
US3096718A (en) * 1961-12-12 1963-07-09 Conard Kenner Trash cutter for a pump
AT255912B (de) * 1964-07-01 1967-07-25 Schlesiger & Co Kg Feluwa Schmutzwasser-Kreiselpumpe
CH411584A (de) * 1964-07-10 1966-04-15 Kolb Eugen Ag Zentrifugalpumpe zum Fördern von verunreinigten Flüssigkeiten
US3447475A (en) * 1967-01-09 1969-06-03 Albert Blum Centrifugal pump
DE6921357U (de) * 1969-05-22 1969-10-09 Hans Hoffmann Elmasch Bau Fa Abwasserpumpe
FI49345C (fi) * 1972-05-15 1975-05-12 Ahlstroem Oy Laite tiivistysraon tukkeutumisen estämiseksi etenkin jätevesipumpussa tai sentapaisessa.
DE2344576A1 (de) * 1973-09-04 1975-03-13 Neratoom Kreiselpumpe zum verarbeiten von schleifende bestandteile enthaltenden fluessigkeiten, insbesondere eine sandpumpe oder schmutzwasserpumpe
FI750217A (fr) * 1975-01-28 1976-07-30 Sarlin Ab Oy E
DE2612910A1 (de) * 1976-03-26 1977-09-29 Albert Blum Abwasserpumpe
SU798359A1 (ru) * 1978-12-08 1981-01-23 Латвийский Научно-Исследовательскийинститут Механизации И Электрифика-Ции Сельского Хозяйства Центробежный насос дл перекачи-ВАНи НЕОдНОРОдНыХ СРЕд C ВОлОК-НиСТыМи ВКлючЕНи Ми
DE3015755A1 (de) * 1980-04-24 1981-11-05 Albert 5204 Lohmar Blum Abwasserpumpe, insbesondere tauchpumpe
SE466766B (sv) * 1989-04-27 1992-03-30 Flygt Ab Itt Centrifugalpump avsedd foer pumpning av vaetskor innehaallande fasta partiklar, exempelvis trasor och andra laangstraeckta foeremaal

Also Published As

Publication number Publication date
DE4338931A1 (de) 1995-05-18
DE4338931C2 (de) 1996-09-05
US5516261A (en) 1996-05-14
EP0653564A1 (fr) 1995-05-17
DE59406012D1 (de) 1998-06-25
ATE166433T1 (de) 1998-06-15

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