EP1616100B1 - Non-chokable pump - Google Patents

Non-chokable pump Download PDF

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Publication number
EP1616100B1
EP1616100B1 EP03789237A EP03789237A EP1616100B1 EP 1616100 B1 EP1616100 B1 EP 1616100B1 EP 03789237 A EP03789237 A EP 03789237A EP 03789237 A EP03789237 A EP 03789237A EP 1616100 B1 EP1616100 B1 EP 1616100B1
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EP
European Patent Office
Prior art keywords
impeller
blades
passage
casing wall
vortex 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.)
Expired - Lifetime
Application number
EP03789237A
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German (de)
French (fr)
Other versions
EP1616100A1 (en
Inventor
Christoph Jäger
Peer Springer
Rolf Witzel
Sven Baumgarten
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
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KSB AG
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Filing date
Publication date
Application filed by KSB AG filed Critical KSB AG
Publication of EP1616100A1 publication Critical patent/EP1616100A1/en
Application granted granted Critical
Publication of EP1616100B1 publication Critical patent/EP1616100B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a free-flow pump whose impeller consists of a loaded with open blades support disk, wherein at least one of the blades has a lower overall height than the other blades, the suction side of the housing wall facing side of the support disk between the hub body and impeller outlet has a concave profile wherein between the front edge of the lesser height bucket and the housing wall of the free-flow pump is a free passage for a spherical object of a certain size, the passage from the inlet of the free-flow pump to the impeller outlet between the impeller and the housing wall permits passage of minimum extension (M) and the blades extend from the impeller outlet to the area of the projection of the inlet.
  • M minimum extension
  • the support disk of the impeller has a convex surface, which adheres to the housing wall in the inlet region of the pump a minimum distance corresponding to the diameter of an imaginary sphere. Moreover, in each case a distance corresponding to a ball diameter, maintained between the straight blades of the impeller. With this design, a larger passage from the inlet opening of the pump to the outlet opening to be created.
  • the convex surface of the impeller has the consequence that the height of the blades in the inlet region is zero and increases only at the impeller outlet to a maximum height.
  • due to the fact that between the blades a ball passage corresponding minimum distance must be maintained a significant limitation in the possibilities of designing the blading.
  • a generic free-flow pump is known by the US Pat. No. 4,592,700 A , In a recessed impeller chamber, an impeller is arranged, from which two blades protrude beyond the impeller chamber and the remaining blades to enhance the co-promotion of air. All blade leading edges and the opposite suction side housing wall are perpendicular to the pump axis.
  • the shovel-free space therebetween has an extension that allows passage of a predetermined size ball of the inlet between the two elongate opposed blades. The pairwise extension of two impeller blades is unfavorable for optimum efficiency.
  • the invention has for its object to provide a free-flow pump, which achieves an increase in efficiency in meeting the requirement for a free ball passage of predetermined size.
  • the housing wall is conical, wherein the distance of the housing wall to the leading edges of the higher blades of the impeller decreases with the diameter, and wherein the passage with the minimum extent approximately constant over the entire course of a leading edge at least one impeller outlet inclined blade of lesser height follows.
  • the invention is based on the fact that the distance of the impeller to the wall opposite it has a significant influence on the efficiency of the free-flow pump.
  • the minimum distance to be realized here is predetermined by the height of the blades in the case of a conventional free-flow pump.
  • an impeller in which the minimum distance would be the Shovels also smaller than the ball diameter the demand for a free ball passage no longer meet.
  • precisely this measure reducing the distance between the impeller and the housing wall while maintaining the minimum distance between the blades, which is too small for a ball passage, is undertaken.
  • the invention Based on the finding that a partial reduction of the height of individual blades, ie the increase of the distance to the housing wall in a partial area, brings about a lower loss of efficiency than increasing the distance in the entire blading, the invention provides only one to an imaginary sphere adapted passage available.
  • the passage with the minimum extension follows the course of a single blade of the impeller.
  • a further embodiment provides that to avoid a hydraulic unbalance two or more blades are distributed uniformly over the impeller to form each passage with the minimum extent.
  • the passage with the minimum extension intersects the hub body of the impeller.
  • the distance of the housing wall to the leading edges of the higher blades of the impeller decreases with the diameter. This measure serves to optimize: Namely, the hub body located in the region of the inlet can only be cut to a limited extent. Therefore, in this area, the distance of the impeller to the housing wall must be relatively large. In the remaining area, however, the housing wall should have the smallest possible distance to the impeller.
  • an impeller 2 is mounted on a shaft 3.
  • the attachment is a hub body 4, in which a screw 5 engages.
  • On the support plate 6 of the impeller 2 a plurality of blades 7 are arranged.
  • In the blading of the impeller 2 extends from the inlet to the impeller outlet a path corresponding to a desired ball passage. Since this web in the case of the embodiment of Fig. 1 is placed in a single blade 8, this has a front edge 9, which has an inclined towards the impeller outlet course.
  • the housing wall 12 of the lid 11 extends conically in such a way that on the one hand, the distance (N) to the leading edges of the higher blades 7 decreases with the diameter, on the other hand, but the distance to the leading edge 9 of the blade 8 is approximately constant over the entire course of the blade 8.
  • the clear width formed between the front edge 9 and the housing wall 12 corresponds approximately to the minimum extent (M) of the imaginary sphere.
  • the course of the minimum extent (M) thus represents, so to speak, the free passage for the ball passage.
  • Via an outlet 13 the medium conveyed by the pump, together with solid admixtures, is conducted into a pipe (not shown).
  • a passing over the inlet 11 into the housing 1 of the free-flow pump solid body of the size of the imaginary sphere is, if it hits one of the outside of the path of the free ball passage blade 7, initially held by the circulation flow of the impeller 2 in suspension.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Gegenstand der Erfindung ist eine Freistrompumpe, deren Laufrad aus einer mit offenen Schaufeln bestückten Tragscheibe besteht, wobei mindestens eine der Schaufeln eine ingesamt geringere Höhe besitzt als die übrigen Schaufeln, wobei die einer saugseitigen Gehäusewand zugekehrte Seite der Tragscheibe zwischen Nabenkörper und Laufradaustritt einen konkaven Verlauf aufweist, wobei zwischen der Vorderkante der Schaufel geringerer Höhe und der Gehäusewand der Freistrompumpe ein freier Durchgang für einen kugelförmigen Gegenstand bestimmter Größe besteht, der Durchgang vom Einlauf der Freistrompumpe bis zum Laufradaustritt zwischen dem Laufrad und der Gehäusewand eine Passage mit einer Mindesterstreckung (M) erlaubt und sich die Schaufeln vom Laufradaustritt bis in den Bereich der Projektion des Einlaufs erstrecken.The invention relates to a free-flow pump whose impeller consists of a loaded with open blades support disk, wherein at least one of the blades has a lower overall height than the other blades, the suction side of the housing wall facing side of the support disk between the hub body and impeller outlet has a concave profile wherein between the front edge of the lesser height bucket and the housing wall of the free-flow pump is a free passage for a spherical object of a certain size, the passage from the inlet of the free-flow pump to the impeller outlet between the impeller and the housing wall permits passage of minimum extension (M) and the blades extend from the impeller outlet to the area of the projection of the inlet.

Bei der durch die DE 14 53 782 A bekannte Freistrompumpe besitzt die Tragscheibe des Laufrades eine konvexe Oberfläche, welche zu der Gehäusewand im Einlaufbereich der Pumpe einen Mindestabstand einhält, welcher dem Durchmesser einer gedachten Kugel entspricht. Im übrigen ist zwischen den gerade verlaufenden Schaufeln des Laufrades jeweils ein Abstand, der einem Kugeldurchmesser entspricht, eingehalten. Mit dieser Gestaltung soll ein größerer Durchgang von der Einlaßöffnung der Pumpe bis zu deren Auslaßöffnung geschaffen werden. Die konvexe Oberfläche des Laufrades hat allerdings zur Folge, daß die Höhe der Schaufeln im Eintrittsbereich Null beträgt und erst am Laufradaustritt zu einer Maximalhöhe ansteigt. Im übrigen bedingt die Tatsache, daß zwischen den Schaufeln ein dem Kugeldurchgang entsprechender Mindestabstand eingehalten werden muß, eine erhebliche Einschränkung in den Möglichkeiten der Gestaltung der Beschaufelung.At the by the DE 14 53 782 A known free-flow pump, the support disk of the impeller has a convex surface, which adheres to the housing wall in the inlet region of the pump a minimum distance corresponding to the diameter of an imaginary sphere. Moreover, in each case a distance corresponding to a ball diameter, maintained between the straight blades of the impeller. With this design, a larger passage from the inlet opening of the pump to the outlet opening to be created. However, the convex surface of the impeller has the consequence that the height of the blades in the inlet region is zero and increases only at the impeller outlet to a maximum height. Moreover, due to the fact that between the blades a ball passage corresponding minimum distance must be maintained, a significant limitation in the possibilities of designing the blading.

Eine gattungsgemäße Freistrompumpe ist bekannt durch die US 4 592 700 A . In einer zurückgesetzten Laufradkammer ist ein Laufrad angeordnet, von dem zwei Schaufeln über die Laufradkammer und die restlichen Schaufeln hinausragen, um die Mitförderung von Luft zu verbessern. Alle Schaufelvorderkanten und die ihnen gegenüberliegende saugseitige Gehäusewand stehen senkrecht auf der Pumpenachse. Der dazwischen befindliche schaufellose Raum weist eine Erstreckung auf, die zwischen den beiden verlängerten, einander gegenüberliegenden Schaufeln die Passage einer Kugel vorgegebener Größe des Einlaufs ermöglicht. Die paarweise Verlängerung von zwei Laufradschaufeln ist ungünstig für einen optimalen Wirkungsgrad.A generic free-flow pump is known by the US Pat. No. 4,592,700 A , In a recessed impeller chamber, an impeller is arranged, from which two blades protrude beyond the impeller chamber and the remaining blades to enhance the co-promotion of air. All blade leading edges and the opposite suction side housing wall are perpendicular to the pump axis. The shovel-free space therebetween has an extension that allows passage of a predetermined size ball of the inlet between the two elongate opposed blades. The pairwise extension of two impeller blades is unfavorable for optimum efficiency.

Der Erfindung liegt die Aufgabe zugrunde, eine Freistrompumpe zu schaffen, die bei Erfüllung der Forderung nach einem freien Kugeldurchgang vorgegebener Größe eine Wirkungsgradsteigerung erreicht.The invention has for its object to provide a free-flow pump, which achieves an increase in efficiency in meeting the requirement for a free ball passage of predetermined size.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Gehäusewand konisch verläuft, wobei der Abstand der Gehäusewand zu den Vorderkanten der höheren Schaufeln des Laufrades mit dem Durchmesser abnimmt, und wobei die Passage mit der Mindesterstreckung etwa gleichbleibend über den gesamten Verlauf einer Vorderkante mindestens einer zum Laufradaustritt hin geneigten Schaufel geringerer Höhe folgt.This object is achieved in that the housing wall is conical, wherein the distance of the housing wall to the leading edges of the higher blades of the impeller decreases with the diameter, and wherein the passage with the minimum extent approximately constant over the entire course of a leading edge at least one impeller outlet inclined blade of lesser height follows.

Die Erfindung geht von dem Umstand aus, daß der Abstand des Laufrades zu der ihm gegenüberliegenden Wand einen maßgeblichen Einfluß auf den Wirkungsgrad der Freistrompumpe hat. Der hier zu verwirklichende Mindestabstand wird bei einer herkömmlichen Freistrompumpe durch die Höhe der Schaufeln vorgegeben. Würde man also den Abstand zwischen Laufrad und Gehäusewand auf ein unterhalb des Durchmessers der gedachten Kugel liegendes Maß verringern, so würde ein Laufrad, bei dem der Mindestabstand der Schaufeln ebenfalls geringer ist als der Kugeldurchmesser, der Forderung nach einem freien Kugeldurchgang nicht mehr genügen. Bei der erfindungsgemäßen Freistrompumpe wird aber genau diese Maßnahme, Verringerung des Abstands zwischen Laufrad und Gehäusewand bei Wahrung des für einen Kugeldurchgang zu geringen Mindestabstands zwischen den Schaufeln, vorgenommen. Basierend auf der Erkenntnis, daß eine teilweise Verringerung der Höhe einzelner Schaufeln, also die Vergrößerung des Abstands zur Gehäusewand in einem Teilbereich, einen geringeren Wirkungsgradverlust mit sich bringt als die Vergrößerung des Abstands in der gesamten Beschaufelung, stellt die Erfindung lediglich eine an eine gedachte Kugel angepaßte Passage zur Verfügung.The invention is based on the fact that the distance of the impeller to the wall opposite it has a significant influence on the efficiency of the free-flow pump. The minimum distance to be realized here is predetermined by the height of the blades in the case of a conventional free-flow pump. Thus, if one were to reduce the distance between the impeller and the housing wall to a level lying below the diameter of the imaginary sphere, then an impeller in which the minimum distance would be the Shovels also smaller than the ball diameter, the demand for a free ball passage no longer meet. In the case of the free-flow pump according to the invention, however, precisely this measure, reducing the distance between the impeller and the housing wall while maintaining the minimum distance between the blades, which is too small for a ball passage, is undertaken. Based on the finding that a partial reduction of the height of individual blades, ie the increase of the distance to the housing wall in a partial area, brings about a lower loss of efficiency than increasing the distance in the entire blading, the invention provides only one to an imaginary sphere adapted passage available.

In zweckmäßiger Ausgestaltung der Erfindung ist vorgesehen, daß die Passage mit der Mindesterstreckung dem Verlauf einer einzigen Schaufel des Laufrades folgt. Eine weitergehende Ausgestaltung sieht vor, daß zur Vermeidung einer hydraulischen Unwucht zwei oder mehr Schaufeln zur Bildung jeweils einer Passage mit der Mindesterstreckung gleichmäßig über das Laufrad verteilt sind. Im übrigen wird die Möglichkeit vorgesehen, daß die Passage mit der Mindesterstreckung den Nabenkörper des Laufrades anschneidet.In an advantageous embodiment of the invention it is provided that the passage with the minimum extension follows the course of a single blade of the impeller. A further embodiment provides that to avoid a hydraulic unbalance two or more blades are distributed uniformly over the impeller to form each passage with the minimum extent. Moreover, the possibility is provided that the passage with the minimum extension intersects the hub body of the impeller.

Der Abstand der Gehäusewand zu den Vorderkanten der höheren Schaufeln des Laufrades nimmt mit dem Durchmesser ab. Diese Maßnahme dient der Optimierung: Der im Bereich des Einlaufs befindliche Nabenkörper kann nämlich nur eingeschränkt angeschnitten werden. Daher muß in diesem Bereich der Abstand des Laufrades zur Gehäusewand relativ groß sein. Im übrigen Bereich aber soll die Gehäusewand einen möglichst geringen Abstand zum Laufrad besitzen.The distance of the housing wall to the leading edges of the higher blades of the impeller decreases with the diameter. This measure serves to optimize: Namely, the hub body located in the region of the inlet can only be cut to a limited extent. Therefore, in this area, the distance of the impeller to the housing wall must be relatively large. In the remaining area, however, the housing wall should have the smallest possible distance to the impeller.

Anhand eines Ausführungsbeispiels wird die Erfindung näher erläutert. Es zeigt

Fig.1
einen Meridianschnitt durch eine erfindungsgemäß gestaltete Freistrompumpe;
Fig.2
eine perspektivische Ansicht eines in der erfindungsgemäßen Freistrompumpe einsetzbaren Laufrades.
Reference to an embodiment of the invention will be explained in more detail. It shows
Fig.1
a meridian section through an inventively designed free-flow pump;
Fig.2
a perspective view of an insertable in the free-flow pump according to the invention impeller.

Im Gehäuse 1 der Freistrompumpe der Fig. 1 ist ein Laufrad 2 auf einer Welle 3 befestigt. Der Befestigung dient ein Nabenkörper 4, in den eine Schraube 5 eingreift. Auf der Tragscheibe 6 des Laufrades 2 sind mehrere Schaufeln 7 angeordnet. In die Beschaufelung des Laufrades 2 zieht sich vom Einlauf bis zum Laufradaustritt eine Bahn, die einem gewünschten Kugeldurchgang entspricht. Da diese Bahn im Falle des Ausführungsbeispiels der Fig. 1 in eine einzige Schaufel 8 gelegt ist, besitzt diese eine Vorderkante 9, die einen zum Laufradaustritt hin geneigten Verlauf hat.In the housing 1 of the free-flow pump of Fig. 1 an impeller 2 is mounted on a shaft 3. The attachment is a hub body 4, in which a screw 5 engages. On the support plate 6 of the impeller 2 a plurality of blades 7 are arranged. In the blading of the impeller 2 extends from the inlet to the impeller outlet a path corresponding to a desired ball passage. Since this web in the case of the embodiment of Fig. 1 is placed in a single blade 8, this has a front edge 9, which has an inclined towards the impeller outlet course.

Ein saugseitig in das Gehäuse 1 eingesetzter Deckel 10 bildet einen Einlauf 11. Die Gehäusewand 12 des Deckels 11 verläuft konisch in der Art, daß einerseits der Abstand (N) zu den Vorderkanten der höheren Schaufeln 7 mit dem Durchmesser abnimmt, andererseits aber der Abstand zu der Vorderkante 9 der Schaufel 8 etwa gleichbleibend über den gesamten Verlauf der Schaufel 8 ist. Die zwischen der Vorderkante 9 und der Gehäusewand 12 gebildete lichte Weite entspricht dabei in etwa der Mindesterstreckung (M) der gedachten Kugel. Der Verlauf der Mindesterstreckung (M) stellt also gewissermaßen die für den Kugeldurchgang freie Bahn dar. Über einen Auslaß 13 wird das von der Pumpe geförderte Medium samt festen Beimengungen in ein - nicht dargestelltes - Rohr geleitet.The housing wall 12 of the lid 11 extends conically in such a way that on the one hand, the distance (N) to the leading edges of the higher blades 7 decreases with the diameter, on the other hand, but the distance to the leading edge 9 of the blade 8 is approximately constant over the entire course of the blade 8. The clear width formed between the front edge 9 and the housing wall 12 corresponds approximately to the minimum extent (M) of the imaginary sphere. The course of the minimum extent (M) thus represents, so to speak, the free passage for the ball passage. Via an outlet 13, the medium conveyed by the pump, together with solid admixtures, is conducted into a pipe (not shown).

Ein über den Einlauf 11 in das Gehäuse 1 der Freistrompumpe gelangender fester Körper von der Größe der gedachten Kugel wird, sofern er auf eine der außerhalb der Bahn des freien Kugeldurchgangs gelegene Schaufel 7 trifft, zunächst von der Zirkulationsströmung des Laufrades 2 in der Schwebe gehalten. Sobald die in ihrer Höhe modifizierte Schaufel 8 den festen Körper passiert, wird für diesen die freie Passage geöffnet; der Körper wird nun von der Absolutströmung des Laufrades 2 über den Auslaß 13 gefördert.A passing over the inlet 11 into the housing 1 of the free-flow pump solid body of the size of the imaginary sphere is, if it hits one of the outside of the path of the free ball passage blade 7, initially held by the circulation flow of the impeller 2 in suspension. As soon as the modified in height blade 8 passes through the solid body, for this is the open free passage; the body is now conveyed by the absolute flow of the impeller 2 through the outlet 13.

Die Fig. 2 zeigt ein Laufrad 14, das eine Variante zu dem Laufrad 2 der Fig. 1 insofern darstellt, als statt einer Bahn für einen Kugeldurchgang zwei solcher Bahnen gebildet werden. Dies bedeutet, daß neben Schaufeln 7 mit normaler Erstreckung zwei Schaufeln 8 mit modifizierter Vorderkante auf der Tragscheibe 6 angeordnet sind. Die Schaufeln 8 sind mit einem rotationssymmetrischen Winkelversatz von 180° zueinander angeordnet. Die gleichmäßige Anordnung der Schaufeln 8 dient der Vermeidung einer hydraulischen Unwucht.The Fig. 2 shows an impeller 14, which is a variant of the impeller 2 of Fig. 1 inasmuch as instead of a track for a ball passage two such tracks are formed. This means that in addition to blades 7 with normal extension two blades 8 are arranged with modified front edge on the support plate 6. The blades 8 are arranged with a rotationally symmetrical angular offset of 180 ° to each other. The uniform arrangement of the blades 8 serves to avoid a hydraulic imbalance.

Claims (3)

  1. Vortex pump, the impeller (2) of which consists of a rear shroud (6) equipped with open blades (7, 8) of different height, at least one of the blades (8) possessing an overall lower height than the remaining blades, that side of the rear shroud (6) which faces a suction-side casing wall (12) having a concave profile between the hub body (4) and impeller outlet, there being between the leading edge of the blade of lower height and the casing wall of the vortex pump a free passage for a spherical object of defined size, the passage providing a flow passage of a minimum extent (M) from the inlet (11) of the vortex pump to the impeller outlet between the impeller (2) and the casing wall (12), and the blades extending from the impeller outlet into the area of projection of the inlet (11), characterized in that the casing wall (12) has a conical profile, the distance (N) of the casing wall (12) from the leading edges of the higher blades (7) of the impeller (2) decreasing with the diameter, and the passage with the minimum extent (M) following, approximately constantly over the entire profile of a leading edge (9), at least one blade (8) of lower height which is inclined towards the impeller outlet.
  2. Vortex pump according to Claim 1, characterized in that the passage with the minimum extent (M) intersects the hub body (4) of the impeller (2).
  3. Vortex pump according to Claim 1 or 2, characterized in that, to avoid hydraulic unbalance, two or more blades (8) of lower height are distributed uniformly across the impeller in order to in each case form a passage with the minimum extent (M).
EP03789237A 2003-01-17 2003-12-12 Non-chokable pump Expired - Lifetime EP1616100B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10301630A DE10301630A1 (en) 2003-01-17 2003-01-17 Non-chokable pump comprises a passage having a minimum extension corresponding to the desired passage of a spherical object from the inlet to the impeller outlet through the mounting of the blades of the impeller
PCT/EP2003/014108 WO2004065797A1 (en) 2003-01-17 2003-12-12 Non-chokable pump

Publications (2)

Publication Number Publication Date
EP1616100A1 EP1616100A1 (en) 2006-01-18
EP1616100B1 true EP1616100B1 (en) 2010-02-10

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ID=32602656

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EP03789237A Expired - Lifetime EP1616100B1 (en) 2003-01-17 2003-12-12 Non-chokable pump

Country Status (5)

Country Link
EP (1) EP1616100B1 (en)
AR (1) AR042894A1 (en)
AU (1) AU2003293852A1 (en)
DE (2) DE10301630A1 (en)
WO (1) WO2004065797A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015212203A1 (en) 2015-06-30 2017-01-05 Ksb Aktiengesellschaft Vortex pump
DE102016225891A1 (en) 2016-12-21 2018-06-21 KSB SE & Co. KGaA Vortex pump
DE102016225908A1 (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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0623042D0 (en) * 2006-11-18 2006-12-27 Weir Pumps Ltd Mechanical assembly
EP2497956A1 (en) 2011-03-08 2012-09-12 Egger Pumps Technology AG Free flow pump
DE102021110936A1 (en) * 2021-04-28 2022-11-03 Herborner Pumpentechnik Gmbh & Co Kg Pump impeller, casing member and pump herewith

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL301440A (en) *
US3167021A (en) * 1963-04-15 1965-01-26 Allis Chalmers Mfg Co Nonclogging centrifugal pump
US3190226A (en) * 1963-09-13 1965-06-22 Thomas E Judd Centrifugal pumps
FR2173365A5 (en) * 1972-02-21 1973-10-05 Bodin Andre Ets
FR2459892A1 (en) * 1979-06-22 1981-01-16 Klein Schanzlin & Becker Ag FLANGE WHEEL WITH A FLANGE FOR CENTRIFUGAL PUMPS
CA1189632A (en) * 1981-10-22 1985-06-25 Robert Furrer Apparatus for applying solder to a printed-circuit board
JPS59165891A (en) * 1983-03-10 1984-09-19 Ebara Corp Vortex pump

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015212203A1 (en) 2015-06-30 2017-01-05 Ksb Aktiengesellschaft Vortex pump
US10738792B2 (en) 2015-06-30 2020-08-11 Ksb Aktiengesellschaft Vortex pump
DE102016225891A1 (en) 2016-12-21 2018-06-21 KSB SE & Co. KGaA Vortex pump
DE102016225908A1 (en) 2016-12-21 2018-06-21 KSB SE & Co. KGaA Vortex pump
WO2018114143A1 (en) 2016-12-21 2018-06-28 KSB SE & Co. KGaA Vortex pump
WO2018114133A1 (en) 2016-12-21 2018-06-28 KSB SE & Co. KGaA Vortex pump
US11168695B2 (en) 2016-12-21 2021-11-09 KSB SE & Co. KGaA Vortex pump
US11187232B2 (en) 2016-12-21 2021-11-30 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
WO2021259658A1 (en) 2020-06-26 2021-12-30 KSB SE & Co. KGaA Centrifugal pump for conveying media containing solids

Also Published As

Publication number Publication date
DE10301630A1 (en) 2004-07-29
AR042894A1 (en) 2005-07-06
DE50312416D1 (en) 2010-03-25
AU2003293852A1 (en) 2004-08-13
EP1616100A1 (en) 2006-01-18
WO2004065797A1 (en) 2004-08-05

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