EP2188532B1 - Pump rotor and pump comprising a pump rotor of said type - Google Patents
Pump rotor and pump comprising a pump rotor of said type Download PDFInfo
- Publication number
- EP2188532B1 EP2188532B1 EP08787296A EP08787296A EP2188532B1 EP 2188532 B1 EP2188532 B1 EP 2188532B1 EP 08787296 A EP08787296 A EP 08787296A EP 08787296 A EP08787296 A EP 08787296A EP 2188532 B1 EP2188532 B1 EP 2188532B1
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- EP
- European Patent Office
- Prior art keywords
- rotation
- pump
- hub
- accordance
- pump rotor
- 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.)
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Links
- 239000012535 impurity Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- -1 hygiene articles Substances 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- 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
- F04D7/045—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 with means for comminuting, mixing stirring or otherwise treating
-
- 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
- F04D29/2288—Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating
-
- 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
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
Definitions
- the invention relates to a pump impeller according to the preamble of claim 1.
- the invention further relates to a pump comprising the pump impeller.
- the publication CH 662 864 discloses a centrifugal pump with a screw centrifugal open type.
- This pump impeller or the Zentrifugalradpumpe comprising such a pump impeller has the disadvantages that the specific speed is limited, and that during operation, a pulsation and / or vibration may occur.
- the publication EP 1 811 184 A1 which is considered to represent the closest prior art, discloses a centrifugal pump having an impeller comprising at least two vanes disposed between two axially spaced apart shields. This centrifugal pump has the disadvantages that it has a poor efficiency, and that can accumulate dirt.
- Wastewater contains a large number of different types of contaminants such as plastic material, hygiene articles, textiles, etc. Larger problems occur in particular in connection with rags and the like, as they hang on the leading edges of the wings and wrap around the impeller hub. Such incidents lead to increased service intervals, reduced efficiency or even pump failures.
- Object of the invention is to form a pump impeller or a pump comprising such a pump impeller, which are suitable for the promotion of waste water or other solids contained liquids and are safe and low maintenance operable, and which may have an increased capacity.
- a pump impeller comprising a first blade, wherein the first blade comprises a first spiral blade part and a subsequent Zentrifugalradschaufelteil, and comprising a hub with a rotation axis, wherein the first Zentrifugalradschaufelteil is firmly connected to the hub, wherein at least one second vane is arranged, which comprises a second fferenradschaufelteil and a subsequent second Zentrifugalradschaufelteil, wherein the first and the second blade each having an outer edge, wherein a connecting means connecting the first and the second blade in the region of the outer edge, and wherein the hub a Forming a frusto-conical or disk-shaped bottom part that extends in the direction of rotation D1 along a partial angle, that the first Zentrifugalradschaufelteil 3b is fixedly connected to the bottom part 3e, and that the second Zentrifugalradschaufelteil 4b so is arranged running with respect to the hub 2, that forms a continuous in the direction of rotation of the bottom part 3
- the connecting means is designed as an impeller cover, which runs concentrically to the axis of rotation, and which is fixedly connected to the outer edges of the first and second blades.
- the impeller cover is preferably designed frusto-conical, with a circular, concentric with the axis of rotation extending inlet opening, through which flows the entire liquid to be conveyed to get to the first and second blades.
- the first and the second Zentrifugalradschaufelteil in the longitudinal direction of the axis of rotation D to the same length.
- the length is selected such that a small gap results between a pump housing part and the second centrifugal blade part, which considerably improves the efficiency of the pump.
- the pump impeller according to the invention has the advantage that it has a continuous, running in the direction of rotation gap between the hub and the second blade, because the second blade is not directly connected to the hub.
- the second blade is fixedly connected to the first blade via the connecting means, and the first blade is connected to the hub.
- This continuous gap running between the hub and the second blade has the advantage that impurities such as rags can not be deposited or caught anywhere.
- the passage channel formed within the pump impeller for the fluid to be delivered is preferably designed such that it has no webs, bumps or otherwise formed means to which Impurities such as rags could accumulate or adhere.
- the inventive pump is thus particularly suitable for the promotion of waste water containing solid impurities, especially textiles, rags, etc.
- the pump is particularly suitable for pumping municipal wastewater, as well as liquids used in industrial, chemical and municipal applications.
- a pump comprising the impeller according to the invention with at least two blades also has the advantages that the pump has an increased delivery capacity with the same impeller size or with the same pump size, since the pump can have two or even more blades.
- the pump can also have a higher efficiency.
- the pump has a reduced pulsation and a reduced vibration.
- the impeller according to the invention can also be balanced more easily, can be trimmed easier, and is easier to edit. In addition, the impeller is less susceptible to wear.
- a pump comprising the impeller according to the invention is thus much more reliable, low-maintenance and cost-effective to operate, in particular when the pump is used to convey effluents or other solids containing liquids.
- Fig. 1 shows a rotatable about a rotation axis D pump impeller 1 comprising a first blade 3, which is fixedly connected to the hub 2, and comprising a second blade 4, which is connected via connecting means 5 with the first blade 3, so that between the second blade 4 and the hub 2 no direct connection is required, and forms between the second blade 4 and the hub 2 in the direction of rotation D 1 extending gap 6 or 6 opening.
- gap 6 is herein a Opening, in particular a gap-shaped opening understood.
- the connecting means 5 is in FIG. 1 indicated only schematically, so that the arrangement of the first and second blade 3.4 is clearly visible.
- the connecting means 5 is preferably arranged such that it mutually firmly connects the outer edges 3c, 4c of the first and second blades 3.4.
- the connecting means 5 can be designed in a variety of ways, for example, as shown rod-shaped, part-surface or as in FIG. 5 shown as a whole lid.
- the first vane 3 comprises a first vane blade part 3a which merges into a first centrifugal vane part 3b.
- the first Zentrifugalradschaufelteil 3b has a pressure-side blade edge 3d.
- the first Zentrifugalradschaufelteil 3b is fixedly connected to the hub 2 via a bottom part 3e.
- the bottom part 3e extends in the direction of rotation D1 along a partial angle.
- the bottom part 3e could preferably be frusto-conical or disk-shaped along the partial angle.
- the second Zentrifugalradschaufelteil 4b is arranged so as to extend with respect to the hub 2, that in the running direction of the bottom part 2a between the second Zentrifugalradschaufelteil 4b and the hub 2 a continuous in the direction of rotation D 1 extending gap 6 forms, because the second Zentrifugalradschaufelteil 4b not directly with the Hub 2 is connected.
- the pump impeller 1 is thus open because of the gap 6 against bottom.
- the bottom part 3e has a sloping edge 3f.
- the first Zentrifugalradschaufelteil 3b at the opposite end of the first fferenradschaufelteil 3a an edge 3f.
- the first blade 3 has an outer edge 3c on its end face.
- the second blade 4 comprises a second helical blade part 4a which in a second Centrifugal blade part 4b passes.
- the second Zentrifugalradschaufelteil 4b has a pressure-side blade edge 4d and ends in an edge 4f.
- the second blade 4 has an outer edge 4c on its front side.
- the two blades 3, 4 are fixedly connected to one another via a connecting means 5, which is arranged in the region of the outer edges 3c, 4c, but spaced apart so that gaps form, in particular the gap 6 extending in the direction of rotation D1, which has an outlet in FIG Forming direction of the rotation axis D, as well as extending substantially in the direction of rotation of the axis D columns or outlet openings 6a and 6b, which result between the first and second blades 3.4.
- the impeller 1 has no protruding edges or bumps, to which impurities such as plastic material or textiles such as rags could attach or catch. Such impurities leave the impeller 1 via the gaps 6,6a, 6b.
- the impeller 1 edges 3f, 4f which also serve to remove possible deposits on the inner walls of the pump housing by scratching or cutting movements. In particular, it can also be used to clean the surface of a pump housing part arranged below the bottom part 3e.
- the illustrated embodiment shows only two blades 3.4.
- a pump impeller 1 with a plurality of blades 2 designed in accordance with the second blade 4, which are successively arranged in the direction of rotation D1 and which are all firmly connected to the first blade 3 via the connecting means 5.
- the pump impeller 1
- a first blade 3 and a plurality of second blades 4, for example two, three, four, five, six or seven second blades 4 could be arranged one after the other in the direction of rotation D1.
- the first and second blade 3.4 in an advantageous embodiment in the direction of rotation D 1 extending sub-sections, which extend mutually symmetrical with respect to the axis of rotation D.
- the first and second fferenradschaufelteil 3a, 4a with respect to the rotation axis D are mutually symmetrical.
- the pressure-side blade edges 3d, 4d with respect to the rotation axis D mutually symmetrical.
- FIG. 2 shows that in FIG. 1 pump impeller 1 shown from the direction of view A.
- the connecting means 5 is shown schematically.
- the connecting means, 5, as in FIG. 5 represented as a truncated cone-shaped body, with a circular inlet opening 5a, wherein the frusto-conical body, as in FIG. 2 indicated, abutting the outer edges 3c, 4c and is firmly connected thereto.
- the connecting means can also be designed as a disk in the direction of rotation D radial direction or as a cylindrical tube in the axial direction D.
- FIG. 3 shows that in FIGS. 1 and 2 illustrated pump impeller 1 from the direction B.
- FIG. 4 shows a perspective view of the first blade 3, which comprises a first fferenradschaufelteil 3a and a first Zentrifugalradschaufelteil 3b.
- FIG. 5 shows the first blade 3 in the identical, as in FIG. 4 shown, wherein the frusto-conical connecting part 5 is placed on the first blade 3 and fixedly connected thereto, and wherein the second blade 4 is fixedly connected to the connecting part 5, so that the entire pump impeller 1 is formed.
- FIG. 6 shows that in FIG. 5 Pump impeller 1 shown from a slightly different perspective view. In particular, it can also be seen how the liquid flowing in via the opening 5a, if appropriate with the impurities carried along, can exit unhindered again either via the gap 6 or the lateral openings 6a, 6b.
- FIG. 7 shows a longitudinal section through the in the FIGS. 5 and 6
- the pump impeller 1, which is designed as an impeller cover, is connected in a fluid-tight manner to the first and second blades 3, 4, so that the conveyed fluid enters the pump impeller 1 via the circular opening 5a and leaves it again via the gaps 6, 6a, 6b ,
- the pump housing 7 has a housing wall designed as a truncated cone 7c.
- FIG. 8 shows a pump impeller 1 whose first and second Zentrifugalradschaufelteil 3b, 4b in the longitudinal direction of the rotation axis D have different lengths, so that between the housing wall 7c and the second Zentrifugalradschaufelteil 4b, a gap S forms, through which the liquid can flow.
- This gap S is preferably made as small as possible or narrow in order to keep a backflow of the liquid low.
- FIG. 9 shows a longitudinal section through a centrifugal pump 7 comprising pump housing parts 7a, 7b, 7c and the in FIG. 7 illustrated pump impeller 1.
- the pump impeller 1 is connected to a shaft 8.
- the pump housing could also be designed such that this, in combination with the pump impeller 1 disposed therein, an axial pump is formed by the axial pump instead of the radial outlet has a running in the direction of rotation of the axis D outlet.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Die Erfindung betrifft ein Pumpenlaufrad gemäss dem Oberbegriff von Anspruch 1. Die Erfindung betrifft weiter eine Pumpe umfassend das Pumpenlaufrad.The invention relates to a pump impeller according to the preamble of
Die Druckschrift
Die Druckschrift
Die Druckschrift
Abwässer enthalten eine grosse Anzahl verschiedener Arten von Verunreinigungen wie Kunststoffmaterial, Hygieneartikel, Textilien usw. Grössere Probleme treten insbesondere in Verbindung mit Lumpen und dergleichen auf, da diese an den Vorderkanten der Flügel hängen bleiben und sich um die Laufradnabe herumwickeln. Derartige Vorfälle führen zu erhöhten Serviceintervallen, verminderter Effizienz oder sogar Pumpenausfällen.Wastewater contains a large number of different types of contaminants such as plastic material, hygiene articles, textiles, etc. Larger problems occur in particular in connection with rags and the like, as they hang on the leading edges of the wings and wrap around the impeller hub. Such incidents lead to increased service intervals, reduced efficiency or even pump failures.
Aufgabe der Erfindung ist es ein Pumpenlaufrad beziehungsweise eine Pumpe umfassend ein derartiges Pumpenlaufrad zu bilden, welche zur Förderung von Abwässern oder andere Feststoffe enthaltene Flüssigkeiten geeignet sind sowie sicher und wartungsarm betreibbar sind, und welche eine erhöhte Förderleistung aufweisen können.Object of the invention is to form a pump impeller or a pump comprising such a pump impeller, which are suitable for the promotion of waste water or other solids contained liquids and are safe and low maintenance operable, and which may have an increased capacity.
Diese Aufgabe wird gelöst mit einem Pumpenlaufrad aufweisend die Merkmale von Anspruch 1. Die Unteransprüche 2 bis 11 betreffen weitere, vorteilhaft ausgestaltete Pumpenlaufräder. Die Aufgabe wird weiter gelöst mit einer Pumpe, insbesondere einer Zentrifugalradpumpe oder einer Axialpumpe, aufweisend das erfindungsgemässe Pumpenlaufrad.This object is achieved with a pump impeller comprising the features of
Die Aufgabe wird insbesondere gelöst mit einem Pumpenlaufrad umfassend eine erste Schaufel, wobei die erste Schaufel ein erstes Schraubenradschaufelteil und ein daran anschliessendes erstes Zentrifugalradschaufelteil umfasst, sowie umfassend eine Nabe mit einer Drehachse, wobei das erste Zentrifugalradschaufelteil fest mit der Nabe verbunden ist, wobei zumindest eine zweite Schaufel angeordnet ist, welches ein zweites Schraubenradschaufelteil und ein daran anschliessendes zweites Zentrifugalradschaufelteil umfasst, wobei die erste und die zweite Schaufel je eine Aussenkante aufweisen, wobei ein Verbindungsmittel die erste und die zweite Schaufel im Bereich der Aussenkante miteinander verbindet, und wobei die Nabe ein kegelstumpfförmiges oder scheibenförmiges Bodenteil ausbildet, das sich in Drehrichtung D1 entlang eines Teilwinkels erstreckt, dass das erste Zentrifugalradschaufelteil 3b fest mit dem Bodenteil 3e verbunden ist, und dass das zweite Zentrifugalradschaufelteil 4b derart bezüglich der Nabe 2 verlaufend angeordnet ist, dass sich in Verlaufsrichtung des Bodenteils 3e zwischen dem zweiten Zentrifugalradschaufelteil 4b und der Nabe 2 ein durchgehender in Drehrichtung verlaufender Spalt ausbildet, weil das zweite Zentrifugalradschaufelteil nicht direkt mit der Nabe verbunden ist. Das erfindungsgemässe Pumpenlaufrad ist somit gegen unten offen, und weist dort den in Drehrichtung verlaufenden Spalt auf. Dank diesem Spalt wird die darunter liegende Fläche auf Grund der Rotation des Pumpenlaufrades ständig gereinigt. Daher verhindert dieser Spalt auch Ablagerungen.The object is achieved in particular with a pump impeller comprising a first blade, wherein the first blade comprises a first spiral blade part and a subsequent Zentrifugalradschaufelteil, and comprising a hub with a rotation axis, wherein the first Zentrifugalradschaufelteil is firmly connected to the hub, wherein at least one second vane is arranged, which comprises a second Schraubenradschaufelteil and a subsequent second Zentrifugalradschaufelteil, wherein the first and the second blade each having an outer edge, wherein a connecting means connecting the first and the second blade in the region of the outer edge, and wherein the hub a Forming a frusto-conical or disk-shaped bottom part that extends in the direction of rotation D1 along a partial angle, that the first Zentrifugalradschaufelteil 3b is fixedly connected to the bottom part 3e, and that the second Zentrifugalradschaufelteil 4b so is arranged running with respect to the
In einer besonders vorteilhaften Ausgestaltung ist das Verbindungsmittel als ein Laufraddeckel ausgestaltet, welcher konzentrisch zur Drehachse verläuft, und welcher fest mit den Aussenkanten der ersten und zweiten Schaufel verbunden ist. Der Laufraddeckel ist vorzugsweise kegelstumpfförmig ausgestaltet, mit einer kreisförmigen, konzentrisch zur Drehachse verlaufenden Eintrittsöffnung, durch welche die gesamte zu fördernde Flüssigkeit einströmt, um zur ersten und zweiten Schaufel zu gelangen.In a particularly advantageous embodiment, the connecting means is designed as an impeller cover, which runs concentrically to the axis of rotation, and which is fixedly connected to the outer edges of the first and second blades. The impeller cover is preferably designed frusto-conical, with a circular, concentric with the axis of rotation extending inlet opening, through which flows the entire liquid to be conveyed to get to the first and second blades.
In einer besonders vorteilhaften Ausgestaltung weist das erste und das zweite Zentrifugalradschaufelteil in Längsrichtung der Drehachse D dieselbe Länge auf. In einer besonders vorteilhaften Ausgestaltung ist die Länge derart gewählt, dass sich zwischen einem Pumpengehäuseteil und dem zweiten Zentrifugalradschaufelteil ein geringer Spalt ergibt, was den Wirkungsgrad der Pumpe erheblich verbessert.In a particularly advantageous embodiment, the first and the second Zentrifugalradschaufelteil in the longitudinal direction of the axis of rotation D to the same length. In a particularly advantageous embodiment, the length is selected such that a small gap results between a pump housing part and the second centrifugal blade part, which considerably improves the efficiency of the pump.
Das erfindungsgemässe Pumpenlaufrad weist den Vorteil auf, dass dieses zwischen der Nabe und der zweiten Schaufel einen durchgehenden, in Drehrichtung verlaufenden Spalt aufweist, weil die zweite Schaufel nicht direkt mit der Nabe verbunden ist. Die zweite Schaufel ist über das Verbindungsmittel fest mit der ersten Schaufel verbunden, und die erste Schaufel ist mit der Nabe verbunden. Dieser durchgehende zwischen der Nabe und der zweiten Schaufel verlaufende Spalt weist den Vorteil auf, dass sich Verunreinigungen wie beispielsweise Lumpen nicht irgendwo anlagern oder verfangen können. Der innerhalb des Pumpenlaufrades ausgebildete Durchtrittskanal für das zu fördernde Fluid ist vorzugsweise derart ausgestaltet, dass dieser keine Stege, Höcker oder sonst wie gebildete Mittel aufweist, an welchen sich Verunreinigungen wie Lumpen ansammelt oder anhaften könnten. Die erfindungsgemässe Pumpe ist somit insbesondere auch zur Förderung von Abwässern geeignet, die feste Verunreinigungen, insbesondere auch Textilien, Lumpen usw. enthalten. Die Pumpe ist insbesondere zur Förderung von Siedlungsabwässern, sowie in industriellen, chemischen und kommunalen Anwendungen anfallende Flüssigkeiten geeignet.The pump impeller according to the invention has the advantage that it has a continuous, running in the direction of rotation gap between the hub and the second blade, because the second blade is not directly connected to the hub. The second blade is fixedly connected to the first blade via the connecting means, and the first blade is connected to the hub. This continuous gap running between the hub and the second blade has the advantage that impurities such as rags can not be deposited or caught anywhere. The passage channel formed within the pump impeller for the fluid to be delivered is preferably designed such that it has no webs, bumps or otherwise formed means to which Impurities such as rags could accumulate or adhere. The inventive pump is thus particularly suitable for the promotion of waste water containing solid impurities, especially textiles, rags, etc. The pump is particularly suitable for pumping municipal wastewater, as well as liquids used in industrial, chemical and municipal applications.
Eine Pumpe umfassend das erfindungsgemässe Pumpenrad mit zumindest zwei Schaufeln weist zudem die Vorteile auf, dass die Pumpe eine erhöhte Förderleistung bei gleicher Pumpenradgrösse beziehungsweise bei gleicher Pumpengrösse aufweist, da die Pumpe zwei oder noch mehr Schaufeln aufweisen kann. Die Pumpe kann zudem einen höheren Wirkungsgrad aufweisen. Zudem weist die Pumpe eine verringerte Pulsation sowie eine verringerte Vibration auf. Das erfindungsgemässe Pumpenrad kann zudem einfacher ausgewuchtet werden, kann einfacher getrimmt werden, und ist einfacher zu bearbeiten. Zudem ist das Pumpenrad weniger verschleissanfällig.A pump comprising the impeller according to the invention with at least two blades also has the advantages that the pump has an increased delivery capacity with the same impeller size or with the same pump size, since the pump can have two or even more blades. The pump can also have a higher efficiency. In addition, the pump has a reduced pulsation and a reduced vibration. The impeller according to the invention can also be balanced more easily, can be trimmed easier, and is easier to edit. In addition, the impeller is less susceptible to wear.
Eine Pumpe umfassend das erfindungsgemässe Pumpenrad ist somit wesentlich zuverlässiger, wartungsarmer und kostengünstiger zu betreiben, insbesondere wenn die Pumpe zur Förderung von Abwässern oder andere Feststoffe enthaltende Flüssigkeiten verwendet wird.A pump comprising the impeller according to the invention is thus much more reliable, low-maintenance and cost-effective to operate, in particular when the pump is used to convey effluents or other solids containing liquids.
Die zur Erläuterung der Ausführungsbeispiele verwendeten Zeichnungen zeigen:
- Fig. 1
- eine perspektivische Ansicht eines Ausführungsbeispieles eines Pumpenlaufrades mit nur symbolisch dargestellten Verbindungsmitteln;
- Fig. 2
- eine Seitenansicht des in
dargestellten Pumpenlaufrades aus seitlicher Blickrichtung A;Figur 1 - Fig. 3
- eine Untenansicht des in
dargestellten Pumpenlaufrades aus der Blickrichtung B;Figur 1 und 2 - Fig. 4
- eine perspektivische Ansicht der ersten Schaufel;
- Fig. 5
- eine perspektivische Ansicht eines Pumpenlaufrades mit Laufraddeckel;
- Fig. 6
- das in
dargestellte Pumpenlaufrad aus leicht unterschiedlicher perspektivischer Ansicht;Figur 5 - Fig. 7
- ein Längsschnitt durch das in
dargestellte Pumpenlaufrad;Figur 5 und 6 - Fig. 8
- ein Längsschnitt durch ein weiteres Pumpenlaufrad;
- Fig. 9
- ein Längsschnitt durch eine Zentrifugalradpumpe.
- Fig. 1
- a perspective view of an embodiment of a pump impeller with only symbolically illustrated connecting means;
- Fig. 2
- a side view of the in
FIG. 1 illustrated pump impeller from the lateral direction of view A; - Fig. 3
- a bottom view of the in
FIGS. 1 and 2 Pump impeller shown from the direction B; - Fig. 4
- a perspective view of the first blade;
- Fig. 5
- a perspective view of a pump impeller with impeller cover;
- Fig. 6
- this in
FIG. 5 illustrated impeller from slightly different perspective view; - Fig. 7
- a longitudinal section through the in
FIGS. 5 and 6 illustrated impeller; - Fig. 8
- a longitudinal section through another pump impeller;
- Fig. 9
- a longitudinal section through a Zentrifugalradpumpe.
Grundsätzlich sind in den Zeichnungen gleiche Teile mit gleichen Bezugszeichen versehen.Basically, the same parts are given the same reference numerals in the drawings.
Wie in
Claims (12)
- A pump rotor (1) including a first vane (3), wherein the first vane (3) includes a first helical wheel vane part (3a) and a first centrifugal wheel vane part (3b) adjoining it, and including a hub (2) having an axis of rotation (D), wherein the centrifugal wheel vane part (3b) is fixedly connected to the hub (2), and wherein at least one second vane (4) is provided which includes a second helical wheel vane part (4a) and a second centrifugal vane part (4b) adjoining it, and wherein the first and the second vanes (3, 4) each have an outer edge (3c, 4c), and wherein a connection means (5) connects the first and the second vanes (3, 4) to one another in the region of the outer edge (3c, 4c), characterized in that the hub (2) forms a frustoconical or disk-shaped base part (3e) which extends along a pitch angle in the direction of rotation (D1); in that the first centrifugal wheel vane part (3b) is fixedly connected to the base part (3e); and in that the second centrifugal wheel vane part (4b) is arranged extending with respect to the hub (2) such that in the direction of extent of the base part (3e) a throughgoing gap (6) extending in the direction of rotation (D1) is formed between the second centrifugal wheel vane part (4b) and the hub (2) because the second centrifugal wheel vane part (4b) is not directly connected to the hub (2).
- A pump rotor (1) in accordance with claim 1, characterized in that the base part (3e) has at least the same outer diameter as the first and second centrifugal wheel vane parts (3b, 4b), and in that the second centrifugal wheel vane part (4b) is designed extending in the longitudinal direction of the axis of rotation (D) such that a gap (6) extending in the longitudinal direction of the axis of rotation (D) results between the base part (3e) and the second centrifugal wheel vane part (4b).
- A pump rotor (1) in accordance with claim 1 or claim 2, characterized in that the first and second centrifugal wheel vane parts (3b, 4b) have the same length in the longitudinal direction of the axis of rotation (D).
- A pump rotor (1) in accordance with claim 1 or claim 2, characterized in that the second centrifugal wheel vane part (4b) is designed shorter in the longitudinal direction of the axis of rotation (D) than the first centrifugal wheel vane part (3b).
- A pump rotor (1) in accordance with any one of the preceding claims, characterized in that the connection means (5) is designed as a rotor cover (7) which extends concentrically to the axis of rotation (D) and which is fixedly connected to the outer edges (3c, 4c) of the first and second vanes (3, 4), wherein the rotor cover (7) is in particular designed as frustoconical, cylindrical or as a disk.
- A pump rotor in accordance with claim 5, characterized in that the rotor cover (7) has a circular opening (7a) which extends concentrically to the axis of rotation (D).
- A pump rotor in accordance with any one of the preceding claims, characterized in that the first and second vanes (3, 4) have pitch sections which extend in the direction of rotation (D1) and which extend mutually symmetrically with respect to the axis of rotation (D).
- A pump rotor in accordance with claim 7, characterized in that the first and second helical wheel vane parts (3a, 4a) extend mutually symmetrically with respect to the axis of rotation (D).
- A pump rotor in accordance with claim 7 or claim 8, characterized in that the first and second centrifugal wheel vane parts (3b, 4b) each have a pressure-side vane flank (3d, 4d); and in that the pressure-side vane flanks (3d, 4d) extend mutually symmetrically with respect to the axis of rotation (D).
- A pump rotor in accordance with any one of the preceding claims, characterized in that the hub (2) forms a frustoconcial or disk-shaped base (3e); and in that the first centrifugal wheel vane part (3b) is fixedly connected to the base (3e).
- A pump rotor (1) in accordance with any one of the preceding claims, including a plurality of second vanes (4) arranged spaced apart in the direction of rotation (D1).
- A pump, in particular a centrifugal pump or an axial flow pump, including a pump rotor (1) in accordance with any one of the previous claims.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08787296A EP2188532B1 (en) | 2007-08-16 | 2008-08-18 | Pump rotor and pump comprising a pump rotor of said type |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07114479 | 2007-08-16 | ||
EP08787296A EP2188532B1 (en) | 2007-08-16 | 2008-08-18 | Pump rotor and pump comprising a pump rotor of said type |
PCT/EP2008/060814 WO2009022019A1 (en) | 2007-08-16 | 2008-08-18 | Pump rotor and pump comprising a pump rotor of said type |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2188532A1 EP2188532A1 (en) | 2010-05-26 |
EP2188532B1 true EP2188532B1 (en) | 2011-10-12 |
Family
ID=38833296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08787296A Active EP2188532B1 (en) | 2007-08-16 | 2008-08-18 | Pump rotor and pump comprising a pump rotor of said type |
Country Status (8)
Country | Link |
---|---|
US (1) | US8511966B2 (en) |
EP (1) | EP2188532B1 (en) |
JP (1) | JP5238809B2 (en) |
CN (1) | CN101779043B (en) |
AT (1) | ATE528511T1 (en) |
DK (1) | DK2188532T3 (en) |
RU (1) | RU2470191C2 (en) |
WO (1) | WO2009022019A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2407185A1 (en) | 2010-07-15 | 2012-01-18 | ECP Entwicklungsgesellschaft mbH | Radial compressible and expandable rotor for a pump with a turbine blade |
CN102748322A (en) * | 2012-06-29 | 2012-10-24 | 江苏国泉泵业制造有限公司 | Double-vane axial flow pump |
CN102748300A (en) * | 2012-06-29 | 2012-10-24 | 江苏国泉泵业制造有限公司 | Spiral axial-flow pump |
CN102878087A (en) * | 2012-09-18 | 2013-01-16 | 安徽天富泵阀有限公司 | Direct connection type starch pump |
DK2894343T3 (en) | 2014-01-12 | 2017-12-11 | Alfa Laval Corp Ab | SELF-TILTING CENTRIFUGAL PUMP |
DK2894342T3 (en) * | 2014-01-12 | 2017-04-03 | Alfa Laval Corp Ab | SELF-TILTING CENTRIFUGAL PUMP |
EP2908012B1 (en) * | 2014-01-24 | 2019-02-27 | McFinn Technologies | Radial impeller and casing for centrifugal pump |
WO2018235105A1 (en) * | 2017-06-22 | 2018-12-27 | Cri Pumps Private Limited | Helical impeller |
CN110552909A (en) * | 2019-09-18 | 2019-12-10 | 兰州理工大学 | Spiral axial flow impeller with non-coaxial surface drainage |
CN111517120B (en) * | 2020-04-30 | 2021-12-14 | 中国科学技术大学 | Accelerating pump for transporting thermonuclear fusion solid spherical bed particles |
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US1763595A (en) * | 1928-04-28 | 1930-06-10 | Allis Chalmers Mfg Co | Pump |
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NL7406866A (en) * | 1974-05-22 | 1975-11-25 | Konijn Machinebouw Nv | DREDGING PUMP. |
JPS5113403A (en) * | 1974-07-23 | 1976-02-02 | Toyo Denki Kogyosho Co Ltd | SUICHUHONPUYOKATSUTAAFUAN |
DE2442446A1 (en) * | 1974-09-05 | 1976-03-18 | Lederle Pumpen & Maschf | Sewage pump for water containing solids - has impeller with blades attached to outer shroud and open centre |
JPS52143001U (en) * | 1976-04-23 | 1977-10-29 | ||
SU623004A2 (en) * | 1977-04-26 | 1978-09-05 | Донецкий Ордена Трудового Красного Знамени Политехнический Институт | Deep-well dredge pump |
JPS54145802U (en) * | 1978-04-01 | 1979-10-09 | ||
CH633617A5 (en) * | 1978-08-31 | 1982-12-15 | Martin Staehle | CENTRIFUGAL PUMP WITH A VIBRATED IMPELLER FOR CONVEYING LONG-FIBER FLUSHED SOLIDS. |
JPS5641487A (en) * | 1979-09-11 | 1981-04-18 | Toukiyouto | Operation of pump equipped with cutters in sand sinking pool or the like |
CH662864A5 (en) | 1983-04-20 | 1987-10-30 | Martin Staehle | Centrifugal pump having an open-type single-blade impeller |
IT1174991B (en) * | 1983-07-06 | 1987-07-01 | Pompe F B M Spa | CENTRIFUGAL PUMP FOR VERY DENSE AND / OR VISCOUS MATERIALS AND PRODUCTS |
SU1642076A1 (en) * | 1989-04-11 | 1991-04-15 | Предприятие П/Я М-5356 | Centrifugal pump for viscous fluids and gas-containing fluidal mixes |
CN2081905U (en) * | 1990-11-09 | 1991-07-31 | 山西省水利机械厂 | Helical centrifugal pump |
AU654269B2 (en) * | 1991-02-28 | 1994-11-03 | Ishigaki Company Limited | Pump having spiral blades |
DE19701297A1 (en) * | 1997-01-16 | 1998-07-23 | Wilo Gmbh | Impeller of a centrifugal pump |
DE19717458A1 (en) * | 1997-04-25 | 1998-10-29 | Klein Schanzlin & Becker Ag | Centrifugal pump |
SE520416C2 (en) * | 1997-11-18 | 2003-07-08 | Flygt Ab Itt | Impeller |
FI111023B (en) * | 1998-12-30 | 2003-05-15 | Sulzer Pumpen Ag | Method and apparatus for pumping material and rotor used in connection with the apparatus |
US6390768B1 (en) * | 1999-03-22 | 2002-05-21 | David Muhs | Pump impeller and related components |
JP3074982U (en) * | 2000-07-19 | 2001-01-30 | 財団法人工業技術研究院 | Integrated 3D sheet metal blade |
JP2004232525A (en) * | 2003-01-29 | 2004-08-19 | Heishin Kikai Kogyo Kk | Concentrically split impeller and manufacturing method thereof |
DE502005002739D1 (en) * | 2005-12-21 | 2008-03-20 | Grundfos Management As | Impeller for a pump unit and associated pump unit |
-
2008
- 2008-08-18 US US12/673,756 patent/US8511966B2/en active Active
- 2008-08-18 WO PCT/EP2008/060814 patent/WO2009022019A1/en active Application Filing
- 2008-08-18 RU RU2010109741/06A patent/RU2470191C2/en not_active IP Right Cessation
- 2008-08-18 CN CN200880102353.5A patent/CN101779043B/en active Active
- 2008-08-18 JP JP2010520601A patent/JP5238809B2/en active Active
- 2008-08-18 AT AT08787296T patent/ATE528511T1/en active
- 2008-08-18 DK DK08787296.6T patent/DK2188532T3/en active
- 2008-08-18 EP EP08787296A patent/EP2188532B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
RU2010109741A (en) | 2011-09-27 |
RU2470191C2 (en) | 2012-12-20 |
US8511966B2 (en) | 2013-08-20 |
ATE528511T1 (en) | 2011-10-15 |
JP2010537097A (en) | 2010-12-02 |
CN101779043A (en) | 2010-07-14 |
US20100215504A1 (en) | 2010-08-26 |
WO2009022019A1 (en) | 2009-02-19 |
DK2188532T3 (en) | 2012-01-30 |
EP2188532A1 (en) | 2010-05-26 |
JP5238809B2 (en) | 2013-07-17 |
CN101779043B (en) | 2013-03-27 |
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