EP1457682B1 - Kreiselpumpe - Google Patents
Kreiselpumpe Download PDFInfo
- Publication number
- EP1457682B1 EP1457682B1 EP03027121A EP03027121A EP1457682B1 EP 1457682 B1 EP1457682 B1 EP 1457682B1 EP 03027121 A EP03027121 A EP 03027121A EP 03027121 A EP03027121 A EP 03027121A EP 1457682 B1 EP1457682 B1 EP 1457682B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blades
- impeller
- centrifugal pump
- exterior
- pump according
- 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.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000010992 reflux Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process 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 is fed axially on its suction side, the delivery liquid, wherein on the Suction side, the blades covered by an annular coaxial cover disc which forms a gap with the pump housing inner wall through which a part the conveyed liquid flows back as a split flow to the suction side.
- US 4,854,820 discloses a centrifugal pump whose impeller is a cover disk has, wherein the cover plate on its side facing the housing Flow channels forming, additional blades for conveying the fluid having.
- the object of the invention is, in centrifugal pumps in particular small design to ensure that the liquid reflux in the gap between the impeller and Housing inner wall leads to the lowest possible losses.
- the outer blades of the Extend the outer edge to the suction opening of the impeller are preferably proposed.
- the outer blades begin at a distance from the outer edge of the impeller.
- the outer blades at a distance to the suction port of the Impeller ends. It is preferably proposed that one to eight outer blades are arranged. A simple production and construction is then given when the outer blades have a constant thickness. low Flow losses are achieved when the leading edge of the outer blades having a particular thickened nose radius. Further, for the function important that the outer blades are oppositely curved to the inner impeller blades.
- the impeller 1 additionally drives.
- the outer blades 8 extend from the outer edge 11 to the suction port 5 of the impeller. Alternatively, the outer blades 8 start at a distance from the outer edge 11 of the impeller 1. Additionally or Alternatively, the outer blades 8 at a distance from the suction opening. 5 of the impeller 1 end.
- the number of outer blades 8 may be different. Preferably it's one to eight shovels.
- the outer blades 8 may in thickness of the Suction side to the pressure side change or a constant thickness have.
- the leading edge 10 of the outer blades 8 may have a Possess nose radius, which can be thickened.
- outer blades 8 Since the outer blades 8 must have a turbine effect, it is important the outer blades 8 are curved opposite to the inner ones Impeller blades 3.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
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) äußere 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 (11) 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 |
---|---|---|---|
DE2003107883 DE10307883A1 (de) | 2003-02-25 | 2003-02-25 | Kreiselpumpe |
DE10307883 | 2003-02-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1457682A1 EP1457682A1 (de) | 2004-09-15 |
EP1457682B1 true 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 |
---|---|---|---|---|
CN102052354A (zh) * | 2010-12-07 | 2011-05-11 | 湖南耐普泵业有限公司 | 高速多相流溶气泵 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012201665B4 (de) * | 2012-02-06 | 2021-11-04 | KSB SE & Co. KGaA | Kreiselpumpenlaufrad |
DE202016008351U1 (de) | 2016-08-09 | 2017-10-09 | Fibre Optics Ct Gmbh, Consulting & Testing | Einbruch-Alarmmeldevorrichtung |
Family Cites Families (8)
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 |
GB2143285B (en) * | 1983-07-14 | 1987-11-11 | Warman Int Ltd | Centrifugal impeller |
EP0288500B1 (de) * | 1986-10-07 | 1991-03-06 | Warman International Limited | Turbine für zentrifugalpumpen |
SU1528035A1 (ru) * | 1987-02-18 | 1994-10-30 | А.И. Золотарь | Центробежный насос |
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 |
-
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
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102052354A (zh) * | 2010-12-07 | 2011-05-11 | 湖南耐普泵业有限公司 | 高速多相流溶气泵 |
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 |
Also Published As
Publication number | Publication date |
---|---|
DE50300951D1 (de) | 2005-09-15 |
DE10307883A1 (de) | 2004-09-02 |
EP1457682A1 (de) | 2004-09-15 |
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