EP1716337B1 - Outil coupant de pompe centrifuge - Google Patents

Outil coupant de pompe centrifuge Download PDF

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Publication number
EP1716337B1
EP1716337B1 EP05700789A EP05700789A EP1716337B1 EP 1716337 B1 EP1716337 B1 EP 1716337B1 EP 05700789 A EP05700789 A EP 05700789A EP 05700789 A EP05700789 A EP 05700789A EP 1716337 B1 EP1716337 B1 EP 1716337B1
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EP
European Patent Office
Prior art keywords
cutting
cutting mechanism
mechanism according
pump
mating surface
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.)
Active
Application number
EP05700789A
Other languages
German (de)
English (en)
Other versions
EP1716337A1 (fr
Inventor
Manfred Zelder
Michael Müller
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 AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wilo AG filed Critical Wilo AG
Priority to PL05700789T priority Critical patent/PL1716337T3/pl
Publication of EP1716337A1 publication Critical patent/EP1716337A1/fr
Application granted granted Critical
Publication of EP1716337B1 publication Critical patent/EP1716337B1/fr
Active 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
    • 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 cutting unit of a centrifugal pump for liquids loaded with solids, wherein the cutting unit has a rotating cutting body with at least one flowed through by the liquid, forming a cutting edge and the cutting body facing with a side surface of a rotationally fixed counter surface, which also at least one of the Having liquid flowed through opening.
  • the object of the invention is to improve a cutting unit of a centrifugal pump so that at high cutting performance low wear occurs.
  • Such a cutting unit has a low wear, as the surfaces can slide past each other. This also ensures that the cutting unit and the pump will not clog and in particular elongated foreign body does not wrap around the cutting body and the impeller. For safe storage, such a cutting unit and thus provided centrifugal pump are easy to manufacture and assembly.
  • the cutting unit 1 of a centrifugal motor pump has a rotating cutting body 2, which is attached to the side of the pump impeller, which faces away from the electric motor.
  • the cutting body 2 is cup-shaped and its upper edge surrounds the bush-shaped inlet opening of the impeller.
  • the upper edge 3 preferably has an internal thread 4, or a press fit, with which it can be screwed or pressed onto the external thread or cylindrical receptacle of the impeller inlet opening.
  • the bottom of the cutting body 2 has three inlet openings 5 which are separated from one another by webs 6, on which radial cutting edges 7 are fastened, in particular formed.
  • the blades 7 thus form an angle of 120 degrees with each other.
  • the inlet openings 5 are formed at an angle to the direction of rotation and thus obliquely to the axis of rotation, so that the cutting body 2 acts as an "axial impeller".
  • the underside and thus the side facing away from the impeller of the cutting body 2 forms a convexly curved side surface 8, wherein the side surface is formed by a part of a spherical surface, so that the cutting body 2 in the region facing away from the impeller forms a spherical cap or dome.
  • the side surface 8 are the cutting edges of the blades 7, so that they are correspondingly curved.
  • the radius R of the side surface 8 is with his Side surface 8 facing away from the axis of the pump shaft at the level of the pump shaft bearing, which is adjacent to the pump impeller.
  • the rotatable body 10 shown in FIGS. 4 and 5 has five sector-shaped flow openings 12 which cooperate with their edges with the cutting edges 7.
  • the cross sections of the flow openings 12 are larger in the second embodiment on the side facing away from the impeller than on the side facing away from the impeller. As a result, a safe promotion puffy solids is guaranteed in particular of hygiene articles.
  • the rotationally fixed body 10 is provided centrally between the flow openings 12 with a suction cap 13, similar to a rotor cap (FIGS. 6 and 7), which prevents clogging of the cutting unit even before the cutting plane.
  • a suction cap 13 similar to a rotor cap (FIGS. 6 and 7)
  • solids, in particular textiles are fed to the throughflow openings, instead of lying in the center between the flow openings in front of the non-rotatable body.
  • the peripheral circular body 10 is mounted in an annular flange 11 which is fixed in the pump housing, in particular screwed.
  • Body 10 and flange 11 may also be made in one piece.

Landscapes

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

Claims (12)

  1. Outil de coupe (1) d'une pompe centrifuge pour des liquides chargés de corps solides, l'outil de coupe présentant un corps de coupe (2) rotatif avec au moins une ouverture (5), traversée par le liquide, formant un tranchant et le corps de coupe étant tourné par une surface latérale (8) vers une contre-surface (9) qui présente de même au moins une ouverture (12) traversée par le liquide,
    caractérisé par le fait que la face latérale (9) tournée vers la contre-surface (9) du corps de coupe (2) est cintrée convexe et la contre-surface (9) concave en correspondance.
  2. Outil de coupe selon la revendication 1;
    caractérisé par le fait que le cintrage du corps de coupe (2) forme une coiffe sphérique (calotte).
  3. Outil de coupe selon la revendication 2,
    caractérisé par le fait que l'extrémité du rayon (R) de la coiffe sphérique se trouve sur l'axe de l'arbre de pompe à hauteur du palier d'arbre qui est proche de la roue mobile.
  4. Outil de coupe selon l'une des revendications précédentes,
    caractérisé par le fait que le corps de coupe (2) rotatif peut être fixé à la roue mobile par sa face écartée de la contre-surface (9).
  5. Outil de coupe selon l'une des revendications précédentes,
    caractérisé par le fait que la contre-surface (9) est formée par un corps (10) fixe qui peut être fixé dans ou sur le carter de pompe ou qui est formé par le carter de pompe.
  6. Outil de coupe selon l'une des revendications précédentes,
    caractérisé par le fait que les ouvertures d'écoulement (12) se rétrécissent en direction d'écoulement et sont de ce fait élargie dans la direction de l'extérieur.
  7. Outil de coupe selon la revendication 5 ou 6,
    caractérisé par le fait que le corps (10) fixe est logé dans un flasque (11) annulaire qui peut être fixé dans ou sur le carter de pompe.
  8. Outil de coupe selon l'une des revendications précédentes,
    caractérisé par le fait que le corps de coupe (2) rotatif présente de deux à quatre, de préférence trois, ouvertures (5) en forme de secteur.
  9. Outil de coupe selon l'une des revendications précédentes,
    caractérisé par le fait que le corps (10) fixe présente de quatre à six, de préférence cinq, ouvertures (12) en forme de secteur.
  10. Outil de coupe selon l'une des revendications précédentes,
    caractérisé par le fait que les tranchants (7) sont formés ou portés par les entretoises (6), en particulier radiales, entre les ouvertures (5) du corps de coupe (2).
  11. Outil de coupe selon l'une des revendications précédentes,
    caractérisé par le fait qu'il présente une pointe d'aspiration (13) en saillie en direction du côté de sortie entre les ouvertures (12) en forme de secteur du corps fixe.
  12. Outil de coupe selon l'une des revendications précédentes,
    caractérisé par le fait que le corps de coupe (2) rotatif agit en tant que roue mobile supplémentaire par la conformation des ouvertures d'entrée (5) selon un angle par rapport à la direction de rotation.
EP05700789A 2004-02-16 2005-01-11 Outil coupant de pompe centrifuge Active EP1716337B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05700789T PL1716337T3 (pl) 2004-02-16 2005-01-11 Mechanizm tnący pompy wirnikowej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004007739A DE102004007739A1 (de) 2004-02-16 2004-02-16 Schneidwerk einer Kreiselpumpe
PCT/EP2005/000150 WO2005078286A1 (fr) 2004-02-16 2005-01-11 Outil coupant de pompe centrifuge

Publications (2)

Publication Number Publication Date
EP1716337A1 EP1716337A1 (fr) 2006-11-02
EP1716337B1 true EP1716337B1 (fr) 2007-03-07

Family

ID=34801934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05700789A Active EP1716337B1 (fr) 2004-02-16 2005-01-11 Outil coupant de pompe centrifuge

Country Status (8)

Country Link
US (1) US7520454B2 (fr)
EP (1) EP1716337B1 (fr)
CN (1) CN100434718C (fr)
AT (1) ATE356294T1 (fr)
DE (2) DE102004007739A1 (fr)
DK (1) DK1716337T3 (fr)
PL (1) PL1716337T3 (fr)
WO (1) WO2005078286A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008005245A1 (de) * 2008-01-19 2009-07-23 Wilo Ag Befestigung des Laufrades einer Kreiselpumpe
DE102008021767A1 (de) * 2008-04-30 2009-11-05 Ksb Aktiengesellschaft Kreiselpumpe mit Zerkleinerungseinrichtung
DE102009011444A1 (de) * 2009-03-03 2010-09-09 Ksb Aktiengesellschaft Freistromrad mit Schneidkanten
US20100319116A1 (en) * 2009-06-23 2010-12-23 William Schmidt Waste Pumping System
CN102434483B (zh) * 2011-12-14 2015-03-18 浙江明江环保科技有限公司 切碎式排污泵
US9261095B2 (en) * 2012-08-31 2016-02-16 Cornell Pump Company Cutter system for pump suction
US9255576B2 (en) * 2012-08-31 2016-02-09 Cornell Pump Company Cutter apparatus for centrifugal pump
CN102828986B (zh) * 2012-09-20 2015-11-18 台州豪贝泵业有限公司 不锈钢切割潜水泵的切割组件
WO2014145910A1 (fr) 2013-03-15 2014-09-18 Pentair Pump Group, Inc. Ensemble de lame de coupe
CN103557154B (zh) * 2013-11-21 2016-04-13 重庆宏美科技有限公司 一种水泵机
WO2017189741A1 (fr) 2016-04-26 2017-11-02 Pentair Flow Technologies, Llc Ensemble de coupe pour une pompe hacheuse
US10779980B2 (en) 2016-04-27 2020-09-22 Synerz Medical, Inc. Intragastric device for treating obesity
CN105926698B (zh) * 2016-07-04 2018-01-05 中交天津航道局有限公司 水力式挖泥船叶轮叶片内径切割增大球面通道的方法
US10473103B2 (en) * 2017-03-13 2019-11-12 Vaughan Company, Inc. Chopper pump with double-edged cutting bars
US11365738B2 (en) 2019-04-09 2022-06-21 Zoeller Pump Company, Llc Reversing grinder pump
US11161121B2 (en) 2019-05-10 2021-11-02 Jung Pumpen Gmbh Cutting blade assembly
KR102232682B1 (ko) * 2020-07-20 2021-03-29 엔에스하이드로(주) 하수이송용 축류펌프 또는 사류펌프

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE934142C (de) * 1943-01-22 1955-10-13 Sulzer Ag Kreiselpumpe mit Zerkleinerungsvorrichtung
US2699295A (en) * 1952-11-12 1955-01-11 Ross L Page Force feed mercury column amalgamator and grinder apparatus
DE1528853A1 (de) * 1962-10-12 1969-12-04 Schade Geb Feissel Hertha Kreiselpumpe fuer verunreinigte Fluessigkeiten mit Zerkleinerungseinrichtung
CH439980A (de) * 1963-01-28 1967-07-15 Eisele Soehne Franz Schneidwerk für Jauchepumpen
US3961758A (en) * 1974-08-23 1976-06-08 Peabody Barnes, Inc. Centrifugal pump with integral grinder
CN2195636Y (zh) * 1994-04-27 1995-04-26 四川省南充市农业机械科学研究所 泵用无堵塞器
DE4438841C2 (de) * 1994-11-02 1999-05-27 Orpu Gmbh Pumpe mit einer Schneideinrichtung
PT911527E (pt) * 1997-10-25 2001-07-31 Orpu Gmbh Bomba com um mecanismo de corte
ATE232577T1 (de) * 1999-03-16 2003-02-15 Werner Arnswald Zerkleinerungspumpe
CN2388377Y (zh) * 1999-08-06 2000-07-19 山东青州市南张石油机械厂 一种剪切泵预剪切装置
FR2812312B1 (fr) * 2000-07-25 2003-01-24 Sert Broyeur sanitaire

Also Published As

Publication number Publication date
DK1716337T3 (da) 2007-07-02
DE502005000456D1 (de) 2007-04-19
US20070164136A1 (en) 2007-07-19
ATE356294T1 (de) 2007-03-15
DE102004007739A1 (de) 2005-08-25
PL1716337T3 (pl) 2007-07-31
EP1716337A1 (fr) 2006-11-02
US7520454B2 (en) 2009-04-21
CN1922403A (zh) 2007-02-28
WO2005078286A1 (fr) 2005-08-25
CN100434718C (zh) 2008-11-19

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