EP3670920A1 - Mécanisme de coupe pour une pompe immergée à eaux usées - Google Patents

Mécanisme de coupe pour une pompe immergée à eaux usées Download PDF

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Publication number
EP3670920A1
EP3670920A1 EP19000562.9A EP19000562A EP3670920A1 EP 3670920 A1 EP3670920 A1 EP 3670920A1 EP 19000562 A EP19000562 A EP 19000562A EP 3670920 A1 EP3670920 A1 EP 3670920A1
Authority
EP
European Patent Office
Prior art keywords
cutting
suction
volume
suction channel
passage openings
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
EP19000562.9A
Other languages
German (de)
English (en)
Other versions
EP3670920B1 (fr
Inventor
Dennis Haustein
Hans-Jörg Herold
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.)
Zehnder Pumpen GmbH
Original Assignee
Zehnder Pumpen 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 Zehnder Pumpen GmbH filed Critical Zehnder Pumpen GmbH
Publication of EP3670920A1 publication Critical patent/EP3670920A1/fr
Application granted granted Critical
Publication of EP3670920B1 publication Critical patent/EP3670920B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 is based on the cutting mechanism for a waste water pump defined in the preamble of claim 1, the thick matter and fiber components of the waste water being discharged and further conveyed via pump-internal suction channels in a pump-related functional component to undergo the same and small-scale comminution, so that turbulence and blockages be avoided.
  • the cutting and shredding of the thick matter and fiber parts is carried out with an application-specific cutter.
  • the cutting unit is connected upstream of the submersible sewage pump and consists of a cutting rotor and a cutting plate.
  • the cutting rotor is equipped with a cutting knife arrangement which is actuated flat and rotating by a cutting rotor drive shaft with the rotary movement of the pump drive.
  • the cutting plate is designed as a cover plate for a suction flange and as a carrier plate for the cutting knives directed counter to the cutting knives on the cutting rotor, which are arranged on one side and in a wedge-like manner in obliquely slotted oblong cutting and passage openings.
  • These cutting and passage openings are designed in a radial and star-like arrangement with respect to one another as suction and entry points for the fluid medium into a suction flange and into the pump housing.
  • the suction flange is fixed between the cutting unit and the pump housing by means of fastening elements in such a way that the fluid medium sucked in from the suction side via an entire suction channel in the direction of fluid flow meets the cutting and passage openings on the cutting plate and is divided into at least six parallel suction channel bores , is conveyed separately as partial volume quantities in these.
  • the cross-sectional and volume volume of all suction channel bores in the suction flange is smaller than the cross-sectional and volume volume of a total suction channel on the suction side of the pump housing.
  • the cutter 1 consisting of the cutting rotor 2 and the cutting plate 5 attached to the suction flange 9 are shown.
  • the cutting rotor 2 is equipped with the cutting knives 3 which are actuated flat and circumferentially by the cutting rotor drive shaft 4 with the rotary movement of the pump drive 15.
  • the cutting rotor 2 has, for example, a star-like design, with three prongs being both the adjusting elements for the positioning and the holding elements for the adjustment and readjustment of the three cutting knives 3 which are moved flat along the cutting plate surface with a cutting gap.
  • the cutting plate 5 is also the cover plate for the suction flange 9 and the carrier plate for the cutting knives 7 directed counter to the cutting knives 3 on the cutting rotor 2, which are arranged on one side and in a wedge-like manner in the obliquely shaped, oblong-shaped cutting and passage openings 6.
  • These eight cutting and passage openings 6 are designed in a radial and star-like arrangement with respect to one another as the suction and entry points for the fluid medium in the fluid flow directions 17 into the suction flange 9 and into the pump housing 13 and lead away. This is done through the eight parallel suction channel bores 10 in the suction flange 9 as separate partial volume quantities.
  • the cross-sectional and volume volume of the eight suction channel bores 10 in the suction flange 9 is dimensioned larger than that of the overall suction channel 16 in Fig. 3 Volume and cross-sectional volume shown on the suction side 14 of the pump housing 13.
  • the pump drive 15 of the submersible sewage pump develops the correspondingly large suction force in the suction channel bores 10.
  • the functionality is also ensured by the fixed connection of the suction flange 9 to the pump housing 13 by the fastening elements 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP19000562.9A 2018-12-19 2019-12-16 Dispositif d'aspiration pour une pompe immergée à eaux usées Active EP3670920B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018009873.8A DE102018009873A1 (de) 2018-12-19 2018-12-19 Schneidewerk für eine Abwasser-Tauchpumpe

Publications (2)

Publication Number Publication Date
EP3670920A1 true EP3670920A1 (fr) 2020-06-24
EP3670920B1 EP3670920B1 (fr) 2022-09-14

Family

ID=69005200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19000562.9A Active EP3670920B1 (fr) 2018-12-19 2019-12-16 Dispositif d'aspiration pour une pompe immergée à eaux usées

Country Status (2)

Country Link
EP (1) EP3670920B1 (fr)
DE (1) DE102018009873A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11471893B2 (en) 2020-07-02 2022-10-18 Crane Pumps & Systems, Inc. Grinder accessory for pump
CN116696787A (zh) * 2023-07-31 2023-09-05 浙江丰球克瑞泵业有限公司 一种具有杂物切割功能的潜水切割泵

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB584395A (en) * 1942-12-30 1947-01-14 Sulzer Ag Improvements in or relating to pumps for dealing with liquids containing solid substances
US3128051A (en) 1960-11-07 1964-04-07 Dag Mfg Co Pump
DD99973A1 (fr) 1972-09-06 1973-09-05
DE2553823C2 (de) 1975-11-29 1984-06-14 Albert 5204 Lohmar Blum Abwasserpumpe
DD230794A1 (de) 1982-05-17 1985-12-11 Tatabanyai Szenbanyak Zerstueckelungsanlage
DD283448A5 (de) 1988-11-04 1990-10-10 "Hidromechanika" Kisszoevetkezet,Hu Zerkleinerungseinrichtung fuer truebe- und abwasserpumpen
US5460482A (en) * 1992-05-26 1995-10-24 Vaughan Co., Inc. Centrifugal chopper pump with internal cutter
EP3027909A1 (fr) 2013-08-01 2016-06-08 Bjm Pumps Llc Pompe à déchiqueter et à cisailler
EP3309401A1 (fr) * 2016-10-17 2018-04-18 Xylem IP Management S.à.r.l. Procédé permettant de fournir un espace axial situé dans un ensemble de coupe d'une pompe de rectifieuse, cale conçue pour fournir ledit interstice axial et pompe de rectifieuse comprenant une telle cale

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6921357U (de) 1969-05-22 1969-10-09 Hans Hoffmann Elmasch Bau Fa Abwasserpumpe

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB584395A (en) * 1942-12-30 1947-01-14 Sulzer Ag Improvements in or relating to pumps for dealing with liquids containing solid substances
US3128051A (en) 1960-11-07 1964-04-07 Dag Mfg Co Pump
DD99973A1 (fr) 1972-09-06 1973-09-05
DE2553823C2 (de) 1975-11-29 1984-06-14 Albert 5204 Lohmar Blum Abwasserpumpe
DD230794A1 (de) 1982-05-17 1985-12-11 Tatabanyai Szenbanyak Zerstueckelungsanlage
DD283448A5 (de) 1988-11-04 1990-10-10 "Hidromechanika" Kisszoevetkezet,Hu Zerkleinerungseinrichtung fuer truebe- und abwasserpumpen
US5460482A (en) * 1992-05-26 1995-10-24 Vaughan Co., Inc. Centrifugal chopper pump with internal cutter
EP3027909A1 (fr) 2013-08-01 2016-06-08 Bjm Pumps Llc Pompe à déchiqueter et à cisailler
EP3309401A1 (fr) * 2016-10-17 2018-04-18 Xylem IP Management S.à.r.l. Procédé permettant de fournir un espace axial situé dans un ensemble de coupe d'une pompe de rectifieuse, cale conçue pour fournir ledit interstice axial et pompe de rectifieuse comprenant une telle cale

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11471893B2 (en) 2020-07-02 2022-10-18 Crane Pumps & Systems, Inc. Grinder accessory for pump
SE545350C2 (en) * 2020-07-02 2023-07-11 Crane Pumps & Systems Pft Corp Grinder accessory for pump
CN116696787A (zh) * 2023-07-31 2023-09-05 浙江丰球克瑞泵业有限公司 一种具有杂物切割功能的潜水切割泵
CN116696787B (zh) * 2023-07-31 2023-10-20 浙江丰球克瑞泵业有限公司 一种具有杂物切割功能的潜水切割泵

Also Published As

Publication number Publication date
DE102018009873A1 (de) 2020-06-25
EP3670920B1 (fr) 2022-09-14

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