EP1583910B1 - Non-chokable pump - Google Patents
Non-chokable pump Download PDFInfo
- Publication number
- EP1583910B1 EP1583910B1 EP03782375.4A EP03782375A EP1583910B1 EP 1583910 B1 EP1583910 B1 EP 1583910B1 EP 03782375 A EP03782375 A EP 03782375A EP 1583910 B1 EP1583910 B1 EP 1583910B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- casing
- suction
- vortex pump
- housing
- 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
- 239000007787 solid Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- 238000007792 addition Methods 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005406 washing 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
- F04D29/2238—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Die Erfindung betrifft eine Freistrompumpe zur Förderung von mit festen Beimengungen versetzten Flüssigkeiten, mit einem Gehäuse, in dem einerseits ein an seinem Außendurchmesser nicht abgedecktes Laufrad angeordnet ist und in dem andererseits ein offener Raum zwischen dem Laufrad und der saugseitigen Gehäusewand gebildet wird, wobei der radial zum Laufrad gelegene Gehäuseraum, im Meridianschnitt gesehen, asymmetrisch ist, und wobei der Abstand der saugseitigen Gehäusewand zum Laufrad mit dem Durchmesser stetig abnimmt, jedoch zwischen dem Laufrad und der saugseitigen Gehäusewand über den gesamten Umfang ein solcher Abstand besteht, daß ein in der Förderflüssigkeit enthaltener fester Gegenstand, der in seiner größten Ausdehnung dem Durchmesser einer vorgegebenen Kugel entspricht, die Freistrompumpe zu passieren vermag.The invention relates to a free-flow pump for promoting added with solid admixtures liquids, with a housing in which on the one hand not covered on its outer diameter impeller is arranged and in the other hand, an open space between the impeller and the suction-side housing wall is formed, wherein the radial to the impeller housing space, seen in meridian section, is asymmetrical, and wherein the distance of the suction-side housing wall to the impeller decreases with the diameter steadily, but between the impeller and the suction-side housing wall over the entire circumference such a distance that contained in the delivery liquid solid object, which corresponds in its greatest extent to the diameter of a given ball, which is able to pass through the free-flow pump.
Durch die
Die
Eine gattungsgemäße Freistrompumpe ist bekannt durch die
Der Erfindung liegt die Aufgabe zugrunde, eine den Wirkungsgrad steigernde Verkleinerung des Pumpenraumes zu erreichen, ohne dabei nennenswerte unerwünschte Nebenwirkungen in Kauf zu nehmen.The invention has for its object to achieve an efficiency-increasing reduction of the pump chamber, without taking any significant undesirable side effects in purchasing.
Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Übergang der saugseitigen Gehäusewand zu der Wand des radial zum Laufrad gelegenen Gehäuseraums stufenlos erfolgt, wobei dieser Gehäuseraum, im Meridianschnitt gesehen, in der Weise asymmetrisch ist, daß die Querschnitte der radial zur Kontur des Laufrades gelegenen Bereiche größer sind als die Querschnitte der saugseitig davor gelegenen Bereiche, und wobei die Querschnitte der radial zur Kontur des Laufrades gelegenen Bereiche in Richtung auf den Auslaß der Freistrompumpe auf eine solche Größe anwachsen, daß die vorgegebene Kugel das Gehäuse zu passieren vermag.The above object is achieved in that the transition of the suction-side housing wall to the wall of the housing radially located radially to the housing space is infinitely, said housing space, seen in the meridian section, is asymmetrical in such a way that the cross-sections of the radially located to the contour of the impeller Areas are larger than the cross sections of the suction side located in front of it, and wherein the cross sections of the radially located to the contour of the impeller areas towards the outlet of the free-flow pump grow to such a size that the given ball is able to pass through the housing.
Die erfindungsgemäße Gestaltung erlaubt eine Optimierung des Pumpenraumes in der Weise, daß die saugseitige Gehäusewand und ein Teil des radial zum Laufrad gelegenen Gehäuseraums auf einen Minimalabstand an das Laufrad herangerückt werden. Die für den Durchgang der gedachten Kugel freizuhaltende Passage wird dabei in dem radial zu der Kontur des Laufrades vorhandenen Gehäuseraum gebildet.The design of the invention allows an optimization of the pump chamber in such a way that the suction-side housing wall and a part of the housing space located radially to the impeller are moved to a minimum distance to the impeller. The passage to be kept free for the passage of the imaginary sphere is thereby formed in the housing space which is present radially to the contour of the impeller.
Die Erfindung ist mit besonderem Vorteil bei Freistrompumpen mit einem zumindest teilweise spiralförmig gestalteten Gehäuse einsetzbar, kann aber im Gegensatz zu der oben geschilderten Pumpe auch in Ringgehäusen eingesetzt werden.The invention can be used with particular advantage in free-stream pumps with an at least partially helically shaped housing, but can also be used in ring housings, in contrast to the above-described pump.
In vorteilhafter Ausgestaltung der Erfindung wird empfohlen, die Querschnitte der radial zur Kontur des Laufrades gelegenen Bereiche des Gehäuseraums jeweils zumindest teilweise als Kreisabschnitte auszubilden, wobei deren Radius in Richtung auf den Auslaß auf ein Maß ansteigt, welches gleich oder größer ist als der Radius der vorgegebenen Kugel.In an advantageous embodiment of the invention, it is recommended that the cross-sections of the radially to the contour of the impeller areas of the housing space at least partially form as circular sections, wherein the radius increases in the direction of the outlet to a level which is equal to or greater than the radius of the predetermined Bullet.
Anhand eines Ausführungsbeispiel wird die Erfindung näher erläutert. Die Zeichnung zeigt in
- Fig. 1
- einen Meridianschnitt durch eine erfindungsgemäße Freistrompumpe;
- Fig. 2
- einen Schnitt gemäß der Linie X-X durch die Freistrompumpe der
Fig. 1 .
- Fig. 1
- a meridian section through a free-flow pump according to the invention;
- Fig. 2
- a section along the line XX through the free-flow pump of
Fig. 1 ,
Im Gehäuse 1 der Freistrompumpe ist ein Laufrad 2 auf einer Welle 3 befestigt. Das Gehäuse 1 ist ein Spiralgehäuse. Der Befestigung des Laufrades 2 dient ein Nabenkörper 4, in den eine Schraube 5 eingreift. Auf der Tragscheibe 6 des Laufrades 2 sind mehrere Schaufeln 7 angeordnet. Ein saugseitig in das Gehäuse 1 eingesetzter Deckel 8 bildet einen Einlauf 9. Die Gehäusewand 10 des Deckels 8 verläuft konisch in der Art, daß der Abstand der Gehäusewand 10 zum Laufrad 2 mit dem Durchmesser abnimmt.In the housing 1 of the free-flow pump, an
Der Spiralraum des Gehäuses 1 ist, im Meridianschnitt gesehen, asymmetrisch gestaltet. Die
Der Übergang der von dem Deckel 8 gebildeten Gehäusewand 10 zur Gehäusewand 11 der Spirale erfolgt stufenlos. Die
Ein mit der Strömung über den Einlauf 9 in das Gehäuse 1 der Freistrompumpe eintretender fester Gegenstand wird zunächst von der Zirkulationsströmung des Laufrades 2 in der Schwebe gehalten, dabei aber von der im Gehäuse 1 herrschenden Absolutströmung in Richtung des Auslasses 12 gefördert. Aufgrund der Gestaltung der Gehäusewand 10 ergibt sich vor dem Auslaß 12 ein freier Durchgang, der in seiner Mindesterstreckung der Größe einer vorgegebenen Kugel entspricht. Der von der Strömung bewegte Gegenstand kann über diesen Durchgang und den Auslaß 12 die Freistrompumpe verlassen.An entering with the flow through the inlet 9 into the housing 1 of the free-flow pump solid object is initially held by the circulation flow of the
Claims (4)
- Vortex pump for delivering liquids which are mixed with solid additions, having a casing (1), in which firstly an impeller (2) which is not covered on its external diameter is arranged and in which secondly an open space is formed between the impeller and the suction-side casing wall (10), the casing space which lies radially with respect to the impeller (2) being asymmetrical as viewed in a meridian plane, and the spacing of the suction-side casing wall (10) from the impeller (2) decreasing constantly with the diameter, but there being a spacing between the impeller (2) and the suction-side casing wall (10) over the entire circumference, which spacing is such that a solid object which is contained in the delivery liquid and the greatest extent of which corresponds to the diameter of a predefined sphere is capable of passing the vortex pump, the transition of the suction-side casing wall (10) to the wall (11) of the casing space which lies radially with respect to the impeller (2) taking place in a stepless manner, characterized in that the casing space is asymmetrical, as viewed in the meridian plane, in such a way that the cross sections of the regions which lie radially with respect to the contour of the impeller (2) are greater than the cross sections of the regions which lie in front thereof on the suction side, and the cross sections of the regions which lie radially with respect to the contour of the impeller (2) increasing in the direction of the outlet (12) of the vortex pump to such a size that the predefined sphere is capable of passing the casing (1).
- Vortex pump according to Claim 1, characterized by an annular casing which surrounds the impeller (2).
- Vortex pump according to Claim 1, characterized by a casing (1) which surrounds the impeller and is at least partly of helical design.
- Vortex pump according to Claim 1, characterized in that the cross sections of the regions of the casing space which lie radially with respect to the contour of the impeller (2) are in each case configured at least partially as circular sections, the radius thereof increasing in the direction of the outlet (12) to a size which is greater than or equal to the radius of the predefined sphere.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10301629 | 2003-01-17 | ||
DE10301629A DE10301629B4 (en) | 2003-01-17 | 2003-01-17 | Vortex pump |
PCT/EP2003/014107 WO2004065796A1 (en) | 2003-01-17 | 2003-12-12 | Non-chokable pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1583910A1 EP1583910A1 (en) | 2005-10-12 |
EP1583910B1 true EP1583910B1 (en) | 2016-08-24 |
Family
ID=32602655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03782375.4A Expired - Lifetime EP1583910B1 (en) | 2003-01-17 | 2003-12-12 | Non-chokable pump |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1583910B1 (en) |
AR (1) | AR042892A1 (en) |
AU (1) | AU2003290021A1 (en) |
DE (1) | DE10301629B4 (en) |
WO (1) | WO2004065796A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009011444A1 (en) * | 2009-03-03 | 2010-09-09 | Ksb Aktiengesellschaft | Free-flow impeller with cutting edges |
EP2497956A1 (en) * | 2011-03-08 | 2012-09-12 | Egger Pumps Technology AG | Free flow pump |
DE102015212203A1 (en) | 2015-06-30 | 2017-01-05 | Ksb Aktiengesellschaft | Vortex pump |
DE102016225908A1 (en) | 2016-12-21 | 2018-06-21 | KSB SE & Co. KGaA | Vortex pump |
DE102016225891A1 (en) | 2016-12-21 | 2018-06-21 | KSB SE & Co. KGaA | Vortex pump |
DE102020003847A1 (en) | 2020-06-26 | 2021-12-30 | KSB SE & Co. KGaA | Centrifugal pump for pumping media containing solids |
Family Cites Families (11)
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 (en) * | 1968-07-19 | 1970-04-27 | ||
DE2215021A1 (en) * | 1972-03-28 | 1973-10-11 | Eta Corp | CENTRIFUGAL PUMP |
US4076179A (en) * | 1976-04-22 | 1978-02-28 | Kabushiki Kaisha Sogo Pump Seisakusho | Centrifugal sewage pump |
FI75652C (en) * | 1984-08-16 | 1988-07-11 | Sarlin Ab Oy E | Impeller at a pump, especially at an eddy current pump. |
US4776753A (en) * | 1986-10-28 | 1988-10-11 | Eddy Pump Corporation | Method of and apparatus for pumping viscous fluids |
DE4239071C2 (en) * | 1992-11-20 | 1997-01-30 | Grundfos As | Submersible pump unit |
SE501165C2 (en) * | 1993-10-22 | 1994-11-28 | Flygt Ab Itt | Pump housing for eddy current pump |
JP3310500B2 (en) * | 1995-07-20 | 2002-08-05 | 株式会社荏原製作所 | underwater pump |
-
2003
- 2003-01-17 DE DE10301629A patent/DE10301629B4/en not_active Expired - Fee Related
- 2003-12-12 WO PCT/EP2003/014107 patent/WO2004065796A1/en active Search and Examination
- 2003-12-12 AU AU2003290021A patent/AU2003290021A1/en not_active Abandoned
- 2003-12-12 EP EP03782375.4A patent/EP1583910B1/en not_active Expired - Lifetime
-
2004
- 2004-01-16 AR ARP040100112A patent/AR042892A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
AR042892A1 (en) | 2005-07-06 |
EP1583910A1 (en) | 2005-10-12 |
WO2004065796A1 (en) | 2004-08-05 |
AU2003290021A1 (en) | 2004-08-13 |
DE10301629A1 (en) | 2004-07-29 |
WO2004065796A8 (en) | 2005-08-04 |
DE10301629B4 (en) | 2013-05-29 |
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