WO2015144307A1 - Pompe centrifuge à dispositif de coupe - Google Patents

Pompe centrifuge à dispositif de coupe Download PDF

Info

Publication number
WO2015144307A1
WO2015144307A1 PCT/EP2015/000634 EP2015000634W WO2015144307A1 WO 2015144307 A1 WO2015144307 A1 WO 2015144307A1 EP 2015000634 W EP2015000634 W EP 2015000634W WO 2015144307 A1 WO2015144307 A1 WO 2015144307A1
Authority
WO
WIPO (PCT)
Prior art keywords
impeller
cutting
centrifugal pump
pump according
cutting insert
Prior art date
Application number
PCT/EP2015/000634
Other languages
German (de)
English (en)
Inventor
Alfred J. Otto
Wolfgang Geier
Wolfgang Strössner
Original Assignee
Wilo Se
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 Se filed Critical Wilo Se
Priority to PL15713648T priority Critical patent/PL3090185T3/pl
Priority to EP15713648.2A priority patent/EP3090185B1/fr
Publication of WO2015144307A1 publication Critical patent/WO2015144307A1/fr

Links

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 centrifugal pump in particular sewage or
  • the pump suction opening facing the end face forms an opening and the suction opening facing away impeller end face is covered by a support disk on which the curved blades are fastened in particular formed.
  • centrifugal pumps are known in which a cutting device is arranged in front of the impeller whose rotatable cutting part is seated on the pump shaft. Furthermore, from DE 26 34 683 known to form the leading edges of the blades of an impeller as cutting edges. In these known sewage pumps, it has been shown that when coarse
  • the object of the invention is to improve a centrifugal pump of the type mentioned so that it is largely blockage-free at high flow rate.
  • a cutting insert projects coaxially to the impeller axis having at least one cutting edge, which forms a cutting device with at least one counter cutting edge of the impeller.
  • Impeller with a cylindrical portion that forms the suction port of the pump is also proposed that the impeller with a cylindrical annular region outside surrounds the cylindrical region of the cutting insert as a bearing.
  • a safe storage of the cutting unit is achieved when the impeller forms on the pump suction side facing away from a pivot bearing for the cutting unit.
  • the cutting insert has two to four, in particular three arranged in the running wheel curved cutting blades, each with a cutting edge.
  • the impeller one to three in particular have two counter cutting edges. It is also advantageous if the counter cutting edges of the impeller of the inner end edges of the
  • Impeller blades are formed.
  • the cutting action and clogging freedom is further improved by the fact that the blades of the impeller are curved towards the impeller interior such that the generatrices of the impeller inner surface are formed by a plurality of straight lines which are parallel to the axis of rotation of the impeller. This should be the inner
  • Impeller axis lie.
  • impeller and cutting insert An optimal storage, management and operation of impeller and cutting insert is given if the impeller has part-cylindrical wall parts within the blades, within which the cutting insert is part cylindrical outer surfaces, wherein the inner radius of the impeller wall portion is equal to or only slightly larger than the outer radius the blade outer surfaces.
  • Figure 1 is an axial section through the centrifugal pump
  • Figure 2 is a perspective view of the pump when removed
  • Figure 3 is a plan view of the parts, as shown in Figure 2
  • the centrifugal pump has a pump housing 1, which is fastened with its flange 2 to the flange of an electric motor, not shown, and a Pump chamber forms, in which an impeller 3 is mounted with its two blades 4.
  • the impeller has an impeller body with two part-cylindrical (resp.
  • the part-cylindrical wall parts 5 and the blades 4 extending outward from the wall parts 5 are fastened on the side facing the motor to a circular support disk 8 coaxial with the pump axis, in particular on which a hub 9 protrudes on the outside, to which the motor shaft is fastened.
  • the wall parts 5 pass over into a cylindrical ring 10 which is coaxial with the pump axis and which has the same shape
  • the cylindrical interior 12 of the ring 10 has the same diameter D as the inner spacing of the wall parts 5 from each other.
  • the impeller 3 is coaxial with the fixed, non-rotating cutting insert 13, which has a cylindrical, partially perforated coaxial outer casing 14, which forms a cylindrical annular region 15 at its end remote from the motor.
  • the annular portion 15 is located with its cylindrical outer shell in the ring 10 of the impeller, wherein the outer diameter of the annular portion only
  • the impeller 3 is rotatably mounted with its ring 10 on the annular portion 15 of the cutting insert.
  • the interior of the cylindrical ring portion 15 forms the suction port 11 of the pump.
  • a cone-shaped extension 17 at the front end of the annular region 15 facilitates the inflow and forms the attachment of the
  • Cylinder surface are located in which also the outer surface of the annular portion 15 is located.
  • the ends of the cutting blades 18 are fixed to a coaxial to the pump axis disc or inner plate 19 which is adjacent to the inside of the support plate 8.
  • the inner plate 19 adjoining the inner side of the support disk 8 forms a second bearing point for the cutting unit.
  • Each fixed cutting blade 18 of the cutting insert forms a cutting edge 21 on a curved edge facing the impeller blades 4 which cooperate with counter cutting edges 22 located at the inner ends of the blades 4.
  • the counter cutting edges 22 of the impeller drive over the cutting edges 21 of the cutting blades, so that sheared between these cutting edges solid parts of the dirty water sheared and crushed.
  • the outer surfaces of the annular portion 15 and the cutting blades 18 are in a coaxial to the pump axis cylinder jacket whose radius is equal to, or minimally smaller than the radius of the cylindrical inner surfaces of the ring 10 and the wall parts 5 of the impeller 3, so that the impeller of the cylindrical

Landscapes

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

Abstract

L'invention concerne une pompe centrifuge, notamment une motopompe pour eaux résiduaires ou eaux souillées, comprenant un rotor (3) dont la face frontale orientée vers l'ouverture d'aspiration de pompe forme une ouverture et la face frontale opposée à l'ouverture d'aspiration est recouverte par une plaque de support (8) sur laquelle les aubes courbées (14) sont fixées, notamment formées. Une plaquette de coupe (13) fait saillie coaxialement à l'axe de rotor à l'intérieur du rotor et présente une arête tranchante (21) qui, avec au moins une arête tranchante homologue (22) du rotor, forme un dispositif de coupe.
PCT/EP2015/000634 2014-03-27 2015-03-25 Pompe centrifuge à dispositif de coupe WO2015144307A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL15713648T PL3090185T3 (pl) 2014-03-27 2015-03-25 Pompa wirowa z urządzeniem tnącym
EP15713648.2A EP3090185B1 (fr) 2014-03-27 2015-03-25 Pompe centrifuge à dispositif de coupe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014004420.3 2014-03-27
DE102014004420.3A DE102014004420A1 (de) 2014-03-27 2014-03-27 Kreiselpumpe mit Schneidvorrichtung

Publications (1)

Publication Number Publication Date
WO2015144307A1 true WO2015144307A1 (fr) 2015-10-01

Family

ID=52785033

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/000634 WO2015144307A1 (fr) 2014-03-27 2015-03-25 Pompe centrifuge à dispositif de coupe

Country Status (4)

Country Link
EP (1) EP3090185B1 (fr)
DE (1) DE102014004420A1 (fr)
PL (1) PL3090185T3 (fr)
WO (1) WO2015144307A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108071595A (zh) * 2017-12-12 2018-05-25 解树超 一种全介质通过型污水泵

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096718A (en) * 1961-12-12 1963-07-09 Conard Kenner Trash cutter for a pump
CH411584A (de) * 1964-07-10 1966-04-15 Kolb Eugen Ag Zentrifugalpumpe zum Fördern von verunreinigten Flüssigkeiten
US4778336A (en) * 1987-07-09 1988-10-18 Weil Pump Company Cutter pump subassembly
EP0395604A1 (fr) * 1989-04-27 1990-10-31 ITT Flygt Aktiebolag Pompe centrifuge
US20090067992A1 (en) * 2007-09-06 2009-03-12 Keener Robert M Sewage Pump

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1026933B (de) * 1955-05-13 1958-03-27 Maurice Gerardin Vorrichtung zum Zerkleinern von in einer Fluessigkeit befindlichen Feststoffen
DE2634683A1 (de) 1976-08-02 1978-02-09 Hermann Dipl Ing Wank Querdurchstroemte hochdruck-schneiddickstoffpumpe
DE3017182A1 (de) * 1980-05-05 1981-11-12 Központi Bányászati Fejlesztési Intézet, Budapest Einrichtung zum transport von trueben und ihrer verfeinerung waehrend des transportes
FI824113A0 (fi) 1982-11-30 1982-11-30 Ahlstroem Oy Foerfarande och anordning foer fibrering av foerbehandlat avfallspapper
DE102008057233A1 (de) 2008-11-10 2010-05-12 Orpu Pumpenfabrik Gmbh Vorrichtung zum Zerkleinern von in flüssigen Medien befindlichen Bestandteilen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096718A (en) * 1961-12-12 1963-07-09 Conard Kenner Trash cutter for a pump
CH411584A (de) * 1964-07-10 1966-04-15 Kolb Eugen Ag Zentrifugalpumpe zum Fördern von verunreinigten Flüssigkeiten
US4778336A (en) * 1987-07-09 1988-10-18 Weil Pump Company Cutter pump subassembly
EP0395604A1 (fr) * 1989-04-27 1990-10-31 ITT Flygt Aktiebolag Pompe centrifuge
US20090067992A1 (en) * 2007-09-06 2009-03-12 Keener Robert M Sewage Pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108071595A (zh) * 2017-12-12 2018-05-25 解树超 一种全介质通过型污水泵

Also Published As

Publication number Publication date
PL3090185T3 (pl) 2021-07-12
EP3090185B1 (fr) 2021-02-24
EP3090185A1 (fr) 2016-11-09
DE102014004420A1 (de) 2015-10-01

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