EP1583910A1 - Pompe non colmatable - Google Patents

Pompe non colmatable

Info

Publication number
EP1583910A1
EP1583910A1 EP03782375A EP03782375A EP1583910A1 EP 1583910 A1 EP1583910 A1 EP 1583910A1 EP 03782375 A EP03782375 A EP 03782375A EP 03782375 A EP03782375 A EP 03782375A EP 1583910 A1 EP1583910 A1 EP 1583910A1
Authority
EP
European Patent Office
Prior art keywords
impeller
housing
suction
free
flow pump
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
EP03782375A
Other languages
German (de)
English (en)
Other versions
EP1583910B1 (fr
Inventor
Christoph Jäger
Rolf Witzel
Peer Springer
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.)
KSB AG
Original Assignee
KSB 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32602655&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1583910(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by KSB AG filed Critical KSB AG
Publication of EP1583910A1 publication Critical patent/EP1583910A1/fr
Application granted granted Critical
Publication of EP1583910B1 publication Critical patent/EP1583910B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2238—Special flow patterns
    • F04D29/2244—Free vortex
    • 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
    • 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

Definitions

  • the invention relates to a free-flow pump for conveying liquids mixed with solid admixtures, with a housing in which on the one hand an impeller which is not covered on its outer diameter is arranged and in which on the other hand an open space is formed between the impeller and the suction-side housing wall, the radial housing space located to the impeller, seen in the meridian section, is asymmetrical, and the distance of the suction-side housing wall to the impeller decreases with the diameter, but there is such a distance over the entire circumference between the impeller and the suction-side housing wall that there is one contained in the conveying liquid solid object that corresponds in its greatest extent to the diameter of a given sphere that the free-flow pump can pass.
  • the invention is based, to achieve an efficiency-increasing reduction in size of the pump chamber without having to accept significant undesirable side effects.
  • the transition of the suction-side housing wall to the wall of the housing space located radially to the impeller is infinitely variable, this housing space, seen in the meridian section, being asymmetrical in such a way that the cross-sections lie radially to the contour of the impeller Areas are larger than the cross sections of the areas located in front of it on the suction side, and the cross sections of the areas located radially to the contour of the impeller in the direction of the outlet of the
  • the design according to the invention allows the pump space to be optimized in such a way that the suction-side housing wall and part of the housing space located radially to the impeller are moved to a minimum distance from the impeller.
  • the passage to be kept clear for the passage of the imaginary ball is formed in the housing space which is present radially to the contour of the impeller.
  • the invention can be used with particular advantage in free-flow pumps with an at least partially spiral-shaped housing, but, in contrast to the pump described above, can also be used in ring housings.
  • the cross sections of the areas of the housing space located radially to the contour of the impeller are each at least partially formed as circular sections, the radius of which increases towards the outlet to a dimension which is equal to or greater than the radius of the predetermined one Bullet.
  • An impeller 2 is fastened on a shaft 3 in the housing 1 of the free-flow pump.
  • the housing 1 is a spiral housing.
  • a wheel body 4, in which a screw 5 engages, serves to fasten the impeller 2.
  • a plurality of blades 7 are arranged on the support disk 6 of the impeller 2. One on the suction side in the housing
  • cover 8 forms an inlet 9.
  • the housing wall 10 of the cover 8 runs conically in such a way that the distance between the housing wall 10 and the impeller 2 decreases with the diameter.
  • the spiral space of the housing 1, as seen in the meridian section, is designed asymmetrically. 1 shows this. This asymmetry is such that the cross-sectional areas of the housing 1 located radially to the contour of the impeller 2 are each larger than the corresponding cross-sectional areas of the areas in front of them on the suction side. This is also due to the curvature that is radial to the impeller
  • the transition from the housing wall 10 formed by the cover 8 to the housing wall 11 of the spiral is stepless. 2 shows the course of the spiral formed by the housing 1 and enclosing the impeller 2.
  • a solid object entering the housing 1 of the free-flow pump with the flow via the inlet 9 is initially held in suspension by the circulation flow of the impeller 2, but in this case by the one in the housing 1 prevailing absolute flow promoted towards the outlet 12. Due to the design of the housing wall 10, there is a free passage in front of the outlet 12, the minimum extent of which corresponds to the size of a predetermined ball. The object moved by the flow can leave the free-flow pump via this passage and the outlet 12.

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 non colmatable servant à refouler des liquides qui sont déplacés avec des impuretés solides. Cette pompe non colmatable comprend un logement (1), un rotor (2) non recouvert, ainsi qu'un espace ouvert qui se trouve entre le rotor et la paroi de logement (10) située côté aspiration. Selon l'invention, l'espace de logement qui est positionné radialement par rapport au rotor (2) est asymétrique en section méridienne. En outre, la distance entre la paroi de logement (10) située côté aspiration et le rotor (2) diminue progressivement en fonction du diamètre du rotor, le rotor (2) et la paroi de logement (10) située côté aspiration étant néanmoins séparés d'une distance sur tout le pourtour, de façon qu'un objet solide, qui est contenu dans le liquide pompé et dont l'expansion maximale correspond au diamètre d'une sphère prédéfinie, puisse passer dans la pompe non colmatable. La transition entre la paroi de logement (10) située côté aspiration et la paroi (11) de l'espace de logement qui est positionné radialement par rapport au rotor (2) est progressive. Cet espace de logement est asymétrique en section méridienne, de façon que les sections transversales des zones situées radialement par rapport au contour du rotor (2) soient plus grandes que les sections transversales des zones situées avant, côté aspiration.
EP03782375.4A 2003-01-17 2003-12-12 Pompe non colmatable Expired - Lifetime EP1583910B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10301629 2003-01-17
DE10301629A DE10301629B4 (de) 2003-01-17 2003-01-17 Freistrompumpe
PCT/EP2003/014107 WO2004065796A1 (fr) 2003-01-17 2003-12-12 Pompe non colmatable

Publications (2)

Publication Number Publication Date
EP1583910A1 true EP1583910A1 (fr) 2005-10-12
EP1583910B1 EP1583910B1 (fr) 2016-08-24

Family

ID=32602655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03782375.4A Expired - Lifetime EP1583910B1 (fr) 2003-01-17 2003-12-12 Pompe non colmatable

Country Status (5)

Country Link
EP (1) EP1583910B1 (fr)
AR (1) AR042892A1 (fr)
AU (1) AU2003290021A1 (fr)
DE (1) DE10301629B4 (fr)
WO (1) WO2004065796A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009011444A1 (de) * 2009-03-03 2010-09-09 Ksb Aktiengesellschaft Freistromrad mit Schneidkanten
EP2497956A1 (fr) * 2011-03-08 2012-09-12 Egger Pumps Technology AG Pompe à tourbillon
DE102015212203A1 (de) 2015-06-30 2017-01-05 Ksb Aktiengesellschaft Freistrompumpe
DE102016225908A1 (de) 2016-12-21 2018-06-21 KSB SE & Co. KGaA Freistrompumpe
DE102016225891A1 (de) 2016-12-21 2018-06-21 KSB SE & Co. KGaA Freistrompumpe
DE102020003847A1 (de) 2020-06-26 2021-12-30 KSB SE & Co. KGaA Kreiselpumpe zur Förderung feststoffhaltiger Medien

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570862A (en) 1949-10-29 1951-10-09 Gen Electric Fluid pump with direction responsive impeller blades
GB840671A (en) * 1957-03-26 1960-07-06 Abrasive Dev Improvements relating to centrifugal pumps
US3044408A (en) * 1961-01-06 1962-07-17 James A Dingus Rotary pump
FR1591066A (fr) * 1968-07-19 1970-04-27
DE2215021A1 (de) * 1972-03-28 1973-10-11 Eta Corp Kreiselpumpe
US4076179A (en) * 1976-04-22 1978-02-28 Kabushiki Kaisha Sogo Pump Seisakusho Centrifugal sewage pump
FI75652C (fi) 1984-08-16 1988-07-11 Sarlin Ab Oy E Loephjul vid en pump, saerskilt vid en virvelstroempump.
US4776753A (en) * 1986-10-28 1988-10-11 Eddy Pump Corporation Method of and apparatus for pumping viscous fluids
DE4239071C2 (de) * 1992-11-20 1997-01-30 Grundfos As Tauchpumpenaggregat
SE501165C2 (sv) * 1993-10-22 1994-11-28 Flygt Ab Itt Pumphus för virvelströmspump
JP3310500B2 (ja) * 1995-07-20 2002-08-05 株式会社荏原製作所 水中ポンプ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004065796A1 *

Also Published As

Publication number Publication date
EP1583910B1 (fr) 2016-08-24
AU2003290021A1 (en) 2004-08-13
WO2004065796A8 (fr) 2005-08-04
WO2004065796A1 (fr) 2004-08-05
AR042892A1 (es) 2005-07-06
DE10301629B4 (de) 2013-05-29
DE10301629A1 (de) 2004-07-29

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