EP1457682A1 - Kreiselpumpe - Google Patents
Kreiselpumpe Download PDFInfo
- Publication number
- EP1457682A1 EP1457682A1 EP03027121A EP03027121A EP1457682A1 EP 1457682 A1 EP1457682 A1 EP 1457682A1 EP 03027121 A EP03027121 A EP 03027121A EP 03027121 A EP03027121 A EP 03027121A EP 1457682 A1 EP1457682 A1 EP 1457682A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blades
- impeller
- centrifugal pump
- pump according
- outer blades
- 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
Links
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Images
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
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/04—Units comprising pumps and their driving means the pump being fluid driven
- F04D13/043—Units comprising pumps and their driving means the pump being fluid driven the pump wheel carrying the fluid driving means
-
- 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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
Definitions
- the invention relates to a centrifugal pump with a bladed impeller, the on its suction side, the liquid is fed axially, on the On the suction side, the blades are covered by an annular coaxial cover disk are, which forms a gap with the inner wall of the pump housing through which a part the pumped liquid flows back to the suction side as a gap flow.
- the object of the invention is, in particular, of small design in centrifugal pumps to ensure that the liquid reflux in the gap between the impeller and Inner wall leads to the lowest possible losses.
- the outer blades differ from the Extend the outer edge to the suction opening of the impeller.
- the start the outer blades at a distance from the outer edge of the impeller.
- the outer blades can also be at a distance from the suction opening of the Impeller end.
- outer blades are arranged.
- a simple manufacture and construction is then given if the outer blades have a constant thickness. low Flow losses are achieved when the leading edge of the outer blades has a particularly thickened nose radius. It is also for the function important that the outer blades are curved opposite to the inner impeller blades.
- the impeller 1 of a radial centrifugal pump sits on a shaft 2 by a Electric motor, not shown, is driven.
- the curved inner Blades 3 of the impeller are covered on both sides.
- On the front side forms the impeller 1 an annular coaxial cover plate 4, in the middle of which the suction opening 5 is located.
- the outer blades 8 extend from the outer edge 11 to the suction opening 5 of the impeller. Alternatively, the outer blades 8 start at a distance from the outer edge 11 of the impeller 1. In addition or alternatively, the outer blades 8 can be at a distance from the suction opening 5 of the impeller 1 end.
- the number of outer blades 8 can be different. Are preferred it has one to eight scoops.
- the outer blades 8 can vary in thickness The suction side to the pressure side change or a constant thickness have.
- the leading edge 10 of the outer blades 8 can be one Have a nose radius that can be thickened.
- outer blades 8 Since the outer blades 8 must have a turbine effect, it is important that the outer blades 8 are curved opposite to the inner Impeller blades 3.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- Fig. 1
- einen axialen Schnitt durch die Pumpe als Ausschnitt,
- Fig. 2
- eine Ansicht der Außenseite des Laufrades mit den äußeren Schaufeln.
Claims (8)
- Kreiselpumpe mit einem beschaufelten Laufrad (1), dem auf seiner Saugseite die Förderflüssigkeit axial zugeführt wird, wobei auf der Saugseite die Schaufeln (3) durch eine ringförmige koaxiale Deckscheibe (4) abgedeckt sind, die mit der Pumpengehäuseinnenwand (6) einen Spalt (7) bildet, durch den ein Teil der geförderten Flüssigkeit als Spaltstrom zur Saugseite zurückströmt, dadurch gekennzeichnet, dass auf der Außenseite der Deckscheibe (4) Schaufeln (8) angeordnet sind, durch die das Laufrad (1) vom Spaltstrom zusätzlich antreibbar ist.
- Kreiselpumpe nach Anspruch 1,dadurch gekennzeichnet, dass die äußeren Schaufeln (8) sich vom Außenrand (1) bis zur Saugöffnung (5) des Laufrades (1) erstrecken.
- Kreiselpumpe nach Anspruch 1,dadurch gekennzeichnet, dass die äußeren Schaufeln (8) in einem Abstand vom Außenrand (11) des Laufrades (1) beginnen.
- Kreiselpumpe nach Anspruch 1 oder 3, dadurch gekennzeichnet, dass die äußeren Schaufeln (8) in einem Abstand zur Saugöffnung (5) des Laufrades (1) enden.
- Kreiselpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass ein bis acht äußere Schaufeln (8) angeordnet sind.
- Kreiselpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die äußeren Schaufeln (8) eine konstante Dicke aufweisen.
- Kreiselpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Eintrittskante (10) der äußeren Schaufeln einen insbesondere verdickten Nasenradius aufweist.
- Kreiselpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die äußeren Schaufeln (8) entgegengesetzt gekrümmt sind zu den inneren Laufradschaufeln (3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10307883 | 2003-02-25 | ||
DE2003107883 DE10307883A1 (de) | 2003-02-25 | 2003-02-25 | Kreiselpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1457682A1 true EP1457682A1 (de) | 2004-09-15 |
EP1457682B1 EP1457682B1 (de) | 2005-08-10 |
Family
ID=32748040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03027121A Expired - Lifetime EP1457682B1 (de) | 2003-02-25 | 2003-11-26 | Kreiselpumpe |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1457682B1 (de) |
DE (2) | DE10307883A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012201665A1 (de) * | 2012-02-06 | 2013-08-08 | Ksb Aktiengesellschaft | Kreiselpumpenlaufrad |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102052354B (zh) * | 2010-12-07 | 2012-04-25 | 湖南耐普泵业有限公司 | 高速多相流溶气泵 |
DE202016008351U1 (de) | 2016-08-09 | 2017-10-09 | Fibre Optics Ct Gmbh, Consulting & Testing | Einbruch-Alarmmeldevorrichtung |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4664592A (en) * | 1983-07-14 | 1987-05-12 | Warman International Limited | Centrifugal pump impeller configured to limit fluid recirculation |
US4854820A (en) * | 1987-02-18 | 1989-08-08 | Zolotar Arkady I | Centrifugal pump for handling liquids carrying solid abrasive particles |
US4883403A (en) * | 1986-10-07 | 1989-11-28 | Warman International Limited | Impellers for centrifugal pumps |
WO2000071237A1 (en) * | 1999-05-25 | 2000-11-30 | Ferenc Inotay | Device for the mixing of liquid with gas and/or other liquids and/or granular, favourably powder-like material, and for the transportation of such mixtures |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE193313C (de) * | ||||
US1879803A (en) * | 1930-01-27 | 1932-09-27 | Andrew G Johnson | Rotary pump |
US2207317A (en) * | 1938-08-05 | 1940-07-09 | Glenn M Freeman | Centrifugal pump |
DE1503248A1 (de) * | 1964-11-21 | 1969-05-08 | Alfa Romeo Societa Per Azioni | Laufrad fuer umlaufende Kraft- und Arbeitsmaschinen |
-
2003
- 2003-02-25 DE DE2003107883 patent/DE10307883A1/de not_active Withdrawn
- 2003-11-26 EP EP03027121A patent/EP1457682B1/de not_active Expired - Lifetime
- 2003-11-26 DE DE50300951T patent/DE50300951D1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4664592A (en) * | 1983-07-14 | 1987-05-12 | Warman International Limited | Centrifugal pump impeller configured to limit fluid recirculation |
US4883403A (en) * | 1986-10-07 | 1989-11-28 | Warman International Limited | Impellers for centrifugal pumps |
US4854820A (en) * | 1987-02-18 | 1989-08-08 | Zolotar Arkady I | Centrifugal pump for handling liquids carrying solid abrasive particles |
WO2000071237A1 (en) * | 1999-05-25 | 2000-11-30 | Ferenc Inotay | Device for the mixing of liquid with gas and/or other liquids and/or granular, favourably powder-like material, and for the transportation of such mixtures |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012201665A1 (de) * | 2012-02-06 | 2013-08-08 | Ksb Aktiengesellschaft | Kreiselpumpenlaufrad |
DE102012201665B4 (de) | 2012-02-06 | 2021-11-04 | KSB SE & Co. KGaA | Kreiselpumpenlaufrad |
Also Published As
Publication number | Publication date |
---|---|
EP1457682B1 (de) | 2005-08-10 |
DE10307883A1 (de) | 2004-09-02 |
DE50300951D1 (de) | 2005-09-15 |
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