WO1989007715A1 - Pompe centrifuge - Google Patents

Pompe centrifuge Download PDF

Info

Publication number
WO1989007715A1
WO1989007715A1 PCT/DK1989/000035 DK8900035W WO8907715A1 WO 1989007715 A1 WO1989007715 A1 WO 1989007715A1 DK 8900035 W DK8900035 W DK 8900035W WO 8907715 A1 WO8907715 A1 WO 8907715A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
inlet
opening
chamber
inlet opening
Prior art date
Application number
PCT/DK1989/000035
Other languages
English (en)
Inventor
Kaj Arne SØRENSEN
Frede Holmbo Petersen (Deceased)
Original Assignee
Soerensen Kaj Arne
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 Soerensen Kaj Arne filed Critical Soerensen Kaj Arne
Publication of WO1989007715A1 publication Critical patent/WO1989007715A1/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
    • 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

Definitions

  • the invention concerns a centrifugal pump of the one- channel type consisting of a housing with at least one inlet and an outlet and in which an enclosed rotor is suspended ro, which rotor has an inlet opening placed co- axially with the rotational axis and an outlet passage on one side of a structure which functions as a rotor blade and which integrally connects two diametrically opposed points in the vicinity of the periphery of the rotor and between those two points has two in a plane normal to the axis oppositely curved parts of which one part continues in a half circular part encircling the rotational axis and connecting approximately tangentially with the other curved part in such a way that a blind chamber is formed at the opposite side to the inlet opening and without passage to the inlet opening.
  • Such pumps are used for pumping liquids containing solid parts, f. inst. waste water, because the wide free passage of this type of pump prevents clogging of the rotor by the solid material.
  • This type of pump is also suitable where damage to the solid parts during the pumping has to be avoided, f. inst. when foodstuffs such as vegetables and sea food are being transported in a processing plant.
  • this type of one-channel pump has a rotor with a better distribution of mass and a greater rigidity than another known one-channel type where the blade forms a spiral from the periphery to a point near the axis of ro ⁇ tation.
  • the first mentioned type of pump has the disadvantage that a low pressure is formed on the blind side of the rotor, which causes some of the solid material to be collected or deposited here. In the case of foodstuffs like sea food this represents a hygienic problem. In such cases the plant has to be stopped fairly often and the pump taken apart and cleaned.
  • the purpose of the invention is to provide a pump of the above mentioned type where the low pressure on the blind side can be eliminated and the disadvantages of this type of pump be avoided.
  • a pump according to the invention can be connected to a water supply whereby the pressure will be equalized during the running of the pump because the pump will take in li ⁇ quid into the chamber on the blind side. Solids carried through the central inlet can therefore not be sucked in and collected on the blind side of the rotor.
  • fig. 1 shows a section of a centrifugal pump according to the invention
  • fig. 2 shows a front view and part section of the pump in fig. 1,
  • fig. 3 shows a top view of a rotor for the pump in fig. 1, and '
  • fig. 4 shows a section of the rotor on the line IV - IV in fig. 3.
  • the pump according to the invention contains a housing 1 with a main inlet 3, a secondary inlet 5, an outlet 7 and a bottom cover 9.
  • the housing 1 supports a rotor 11 which may be driven by a shaft 13.
  • a channel 15 leads to an annular chamber 17 which on three sides is confined by the housing and on the fourth side is confined by the upper flat side 19 of the rotor 11.
  • the rotor 1 is partitioned into an inlet side 21 with a direct connection to the inlet opening and a blind side 25 by a wall 20.
  • the wall 20 has parts 27 and 29 closest to the periphery of the rotor, which parts 27, 29 are connected to a part 31 around the periphery of the inlet opening.
  • On the blind side and starting at the part 27 is formed an opening 33 which has a width and distance from the axis 35 corresponding with the annular chamber's 17.
  • the rotor 1 is made of plastic, preferably polyoxymethylene.
  • the pump according to the invention will be used especially for pumping of shrimps in production plants and wherever it has to be avoided that the shrimps are damaged during transport in the tubing.
  • the pump according to the invention can also be used in plants where vegetables such as carrots, cauliflower, peas and the like are being transported in liquid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

La présente invention se rapporte à une pompe centrifuge du type à un canal, dans laquelle le rotor (11) est du type enfermé et est pourvu d'une paroi transversale (20) servant de lame, et qui comporte une ouverture (33) destinée à contrer la basse pression s'exerçant sur le côté de la paroi (20) qui est opposé à l'ouverture d'entrée (23). Un écoulement partiel du milieu de pompage ou d'un autre liquide est acheminé depuis une source externe à travers une chambre annulaire (19) jusqu'à l'intérieur du logement (1). On peut ainsi éviter que des matières solides se trouvant dans le milieu de pompage forment des aggrégats dans le rotor (11).
PCT/DK1989/000035 1988-02-17 1989-02-16 Pompe centrifuge WO1989007715A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK806/88 1988-02-17
DK80688A DK158799C (da) 1988-02-17 1988-02-17 Centrifugalpumpe af enkanaltype

Publications (1)

Publication Number Publication Date
WO1989007715A1 true WO1989007715A1 (fr) 1989-08-24

Family

ID=8097791

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1989/000035 WO1989007715A1 (fr) 1988-02-17 1989-02-16 Pompe centrifuge

Country Status (3)

Country Link
AU (1) AU3198789A (fr)
DK (1) DK158799C (fr)
WO (1) WO1989007715A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1147321A1 (fr) * 1998-11-30 2001-10-24 Smith & Loveless, Inc. Rotor a un seul orifice
US6921242B2 (en) * 2001-07-10 2005-07-26 Urs Blattmann Centrifugal slurry pump
JP2013050094A (ja) * 2011-08-31 2013-03-14 Kawamoto Pump Mfg Co Ltd 羽根車及び水中ポンプ
WO2020002417A1 (fr) * 2018-06-28 2020-01-02 Mjøs Metallvarefabrikk As Dispositif de pompe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1754992A (en) * 1926-12-06 1930-04-15 American Well Works Centrifugal pump
US2853019A (en) * 1954-09-01 1958-09-23 New York Air Brake Co Balanced single passage impeller pump
US4530643A (en) * 1982-10-11 1985-07-23 Itt Industries, Inc. Centrifugal pump impeller

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1754992A (en) * 1926-12-06 1930-04-15 American Well Works Centrifugal pump
US2853019A (en) * 1954-09-01 1958-09-23 New York Air Brake Co Balanced single passage impeller pump
US4530643A (en) * 1982-10-11 1985-07-23 Itt Industries, Inc. Centrifugal pump impeller

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1147321A1 (fr) * 1998-11-30 2001-10-24 Smith & Loveless, Inc. Rotor a un seul orifice
EP1147321A4 (fr) * 1998-11-30 2002-09-25 Smith & Loveless Inc Rotor a un seul orifice
US6921242B2 (en) * 2001-07-10 2005-07-26 Urs Blattmann Centrifugal slurry pump
JP2013050094A (ja) * 2011-08-31 2013-03-14 Kawamoto Pump Mfg Co Ltd 羽根車及び水中ポンプ
WO2020002417A1 (fr) * 2018-06-28 2020-01-02 Mjøs Metallvarefabrikk As Dispositif de pompe
US11589564B2 (en) 2018-06-28 2023-02-28 Mjøs Metallvarefabrikk As Pump device

Also Published As

Publication number Publication date
DK80688D0 (da) 1988-02-17
AU3198789A (en) 1989-09-06
DK158799B (da) 1990-07-16
DK80688A (da) 1989-08-18
DK158799C (da) 1990-12-03

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