EP3559475B1 - Vortex pump - Google Patents
Vortex pump Download PDFInfo
- Publication number
- EP3559475B1 EP3559475B1 EP17804118.2A EP17804118A EP3559475B1 EP 3559475 B1 EP3559475 B1 EP 3559475B1 EP 17804118 A EP17804118 A EP 17804118A EP 3559475 B1 EP3559475 B1 EP 3559475B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- vortex pump
- pump according
- vane
- vortex
- 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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- 239000007787 solid Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002351 wastewater 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
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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
- 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
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/60—Fluid transfer
- F05B2260/604—Vortex non-clogging type pumps
Definitions
- the invention relates to a free-flow pump with an impeller which has blades for conveying media containing solids.
- Vortex pumps are also referred to as vortex pumps, the delivery rate of which is transferred to the flow medium by a rotating disk provided with blades, the so-called vortex impeller.
- Vortex impellers are particularly suitable for pumping media mixed with solid admixtures, such as waste water.
- the vortex impeller is a radial impeller that allows a large passage for the solids contained in the pumped medium and is less prone to failure.
- WO 2004/065796 A1 describes a free-flow pump for pumping liquids mixed with solid admixtures.
- the transition from the housing wall on the suction side to the wall of the housing space located radially to the impeller takes place continuously.
- the housing space is designed asymmetrically.
- a vortex pump In the EP 1 616 100 B1 a vortex pump is described, the impeller of which consists of a support disk equipped with open blades. The blades have different heights. A housing wall on the suction side is conical. The distance the casing wall to the leading edges of the higher blades of the impeller decreases with the diameter. A passage with a minimum extension consistently follows a leading edge of a blade that is inclined towards the impeller outlet and has a lower height.
- a free, unrestricted impeller passage is called a ball passage. It describes the largest permissible diameter of the solids in order to ensure a blockage-free passage. It is given as the sphere diameter in millimeters.
- the ball passage corresponds at most to the nominal width of the suction or discharge nozzle. In order for this maximum possible ball passage to be achieved with centrifugal pumps, especially with vortex pumps, the path between the moving and stationary components within the pump must at least correspond to the nominal width of the suction or discharge nozzle, otherwise the ball passage is correspondingly smaller.
- the object of the invention is to provide a free-flow pump that can convey media with relatively large solids and, in accordance with the design, has the highest possible degree of efficiency.
- the free-flow pump should be distinguished by a method of manufacture that is as inexpensive as possible and should ensure a long service life.
- the vortex pump should be used as widely as possible and be less susceptible to failure, and should have a favorable NPSH value. Cavitation damage should be avoided. This object is achieved by a free-flow pump with the features of claim 1. Preferred variants can be found in the subclaims.
- the blades branch. Starting from an original blade section, at least one further blade section branches off.
- the shovels extend preferably in a curved manner from the inside to the outside in the radial direction.
- a first blade section branches off at a branch point. As the radius increases further, further branch points can follow.
- branching blade sections form starting points for further branches.
- the inventive branch construction of the blades creates a cascading impeller.
- the branches avoid free spaces in which undesirable eddy formations occur, which would reduce the efficiency of the pump.
- a pump volume is created which leads to a high degree of efficiency with a low flow rate.
- the free-flow pump according to the invention has a relatively high degree of efficiency due to the branching design and at the same time ensures reliable conveyance of media containing solids without clogging.
- the impeller according to the invention is significantly lighter.
- the construction according to the invention has spaces between the blade sections, which lead to a kind of material saving. This creates a lightweight impeller that is highly efficient.
- the original blade section is attached to a hub body of the impeller.
- the hub body is used to fasten the impeller on a shaft and is formed on the support disc of the impeller or is formed by the support disc.
- the original blade section is attached to the hub body and extends with a curvature from the inside to the outside.
- a first blade section branches off from a certain radius.
- the first branch point is at the level of the inlet radius of the suction mouth, so that the medium flows axially through the suction mouth into a region of the impeller which is not branched in the middle and then the medium is conveyed radially outward into the branched areas of the blades by the rotational movement of the impeller.
- the first branch point is preferably located within the first half of the blade, based on the radial extent of the blade, starting from the origin.
- a blade section branches off in the first third of the preceding blade section, it being particularly advantageous if the following blade section begins in a first partial area of the preceding blade section.
- the original vane section and all further branching vane sections of the vane preferably have a course that is curved counter to the direction of rotation, so-called backwardly curved blades. Each blade protrudes with its individual blade sections from the support disk in the suction direction.
- the respective subsequent branching vane sections have a greater curvature than the pre-arranged vane sections.
- the original blade section and / or the respective branching blade sections extend to the outer diameter of the impeller.
- the impeller is designed in one piece with the blades. It proves to be advantageous if the impeller and / or the blades are made of a metallic material. A cast material is preferably used.
- the construction according to the invention ensures a sufficient ball passage with a high delivery efficiency of the pump at the same time.
- the formation of branched blades with sufficient spaces in between between the blades makes it possible to reduce the distance between the housing wall on the inlet side and the blade front, while still ensuring a sufficient ball passage.
- the vortex pump has a high degree of efficiency and at the same time ensures reliable conveyance of media containing solids without clogging.
- all the blades of the impeller are designed to be congruent to one another and have the same shape.
- a free-flow pump is shown, in the housing 1 of which an impeller 2 is positioned.
- the impeller 2 is rotatably connected to a shaft which is shown in Figure 1 is not shown.
- a hub body 4 which has a bore 5 for screwing in a screw, is used to fasten the impeller 2.
- the impeller 2 is designed as a vortex impeller.
- a plurality of blades 7 are arranged on a support disk 6 of the impeller 2.
- a blade-free space 9 is formed between the impeller 2 and the housing wall 8 on the inlet side.
- the suction mouth 10 is formed by a housing part 11 on the suction side.
- the suction mouth 10 forms an inlet for the medium containing solids and has a diameter D.
- the suction-side housing part 11 is designed as a suction cover.
- the impeller 2 is arranged in a pump housing 15.
- the front side of the vortex impeller 2 is at a distance A from the inside of the suction-side housing part 11 on its outer edge.
- the distance A is preferably defined as the distance that a normal, which is perpendicular to the housing wall 8 on the suction side, has to the outer edge of the blade front of the impeller 2.
- the distance A is smaller than the diameter D.
- the height h of the blades 7 decreases in the radial direction, so that the blade front has a slightly inclined or conical shape.
- Figure 2 shows a perspective view of the impeller, which is designed as a vortex impeller.
- the impeller 2 is an open radial impeller that does not have a cover disk.
- Each blade 7 is arranged on the support disk 6.
- the blades 7 are congruent.
- Each blade 7 has an original blade section 12 which extends radially outward from the hub body 4 with a curvature.
- a blade section 14 branches off from the original blade section 12. Both the original blade section 12 and the branching blade section 14 extend to the outer diameter of the impeller 2.
- the branch point 13 is located at the level of the inlet radius of the suction mouth 10, which in Figure 1 is shown.
- the blade sections 12, 14 have a course that is curved counter to the direction of rotation. They have a backward curve.
- the branching blade section 14 has a greater curvature than the original blade section 12.
- FIG. 11 shows a plan view of the impeller 2 as shown in FIG Figure 2 .
- the three blades 7 are arranged offset from one another by 120 °.
- the blade sections 12, 14 have an angular spacing 15 of 40 ° on the outer diameter of the impeller 2.
- FIG 4 shows a perspective view of an impeller 2 in which two blades 7 are arranged on a support disk 6.
- the blades 7 are offset from one another by 180 ° on the hub body 4 of the impeller 2.
- a blade section 14 branches off from the respective original blade section 12 at a first branching point 13, from which a further blade section 17 branches off from a second branching point 16. All of the blade sections 12, 14, 17 extend up to the outer diameter of the impeller 2.
- the impeller 2 which consists of the support disk 6 with the blades 7 and the hub body 4, is designed in one piece. It consists of a cast material. Spaces 18 for immersing a ball are formed between the blades 7. This ensures a ball passage, which also ensures the conveyance of media containing solids.
- Figure 5 shows a plan view of the impeller 2 according to the illustration in FIG Figure 4 .
- the angular distance 15 between the blade sections 12 and 14 is preferably between 30 ° and 60 °, in the exemplary embodiment the angular distance 15 is approximately 45 °.
- the angular distance 19 between the blade sections 14 and 17 is preferably between 20 ° and 50 °, in the exemplary embodiment the angular distance is approximately 38 °.
- the blades 7 are arranged offset from one another by an angle of 180 °.
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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)
Description
Die Erfindung betrifft eine Freistrompumpe mit einem Laufrad, das Schaufeln zur Förderung feststoffhaltiger Medien aufweist.The invention relates to a free-flow pump with an impeller which has blades for conveying media containing solids.
Solche Freistrompumpen werden auch als Wirbelpumpen bezeichnet, deren Förderleistung von einer rotierenden mit Schaufeln versehenen Scheibe, dem sogenannten Freistromrad, auf das Strömungsmedium übertragen wird. Freistromräder eignen sich besonders zur Förderung von mit festen Beimengungen versetzten Medien, wie beispielsweise Schmutzwasser. Das Freistromrad ist ein Radialrad, das einen großen Durchgang für die im Fördermedium enthaltenen Feststoffe ermöglicht und wenig störanfällig ist.Such vortex pumps are also referred to as vortex pumps, the delivery rate of which is transferred to the flow medium by a rotating disk provided with blades, the so-called vortex impeller. Vortex impellers are particularly suitable for pumping media mixed with solid admixtures, such as waste water. The vortex impeller is a radial impeller that allows a large passage for the solids contained in the pumped medium and is less prone to failure.
In der
In der
Als Kugeldurchgang wird ein freier, unverengter Laufraddurchgang bezeichnet. Er beschreibt den größten zulässigen Durchmesser der Feststoffe, um einen verstopfungsfreien Durchgang zu gewährleisten. Er wird als Kugeldurchmesser in Millimeter angegeben. Der Kugeldurchgang entspricht maximal der Nennweite des Saug- bzw. Druckstutzens. Damit dieser maximal mögliche Kugeldurchgang bei Kreiselpumpen, insbesondere bei Freistrompumpen, erreicht wird, muss auch innerhalb der Pumpe der Weg zwischen den bewegten und feststehenden Bauteilen mindestens der Nennweite des Saug- bzw. Druckstutzens entsprechen, andernfalls ist der Kugeldurchgang entsprechend kleiner.A free, unrestricted impeller passage is called a ball passage. It describes the largest permissible diameter of the solids in order to ensure a blockage-free passage. It is given as the sphere diameter in millimeters. The ball passage corresponds at most to the nominal width of the suction or discharge nozzle. In order for this maximum possible ball passage to be achieved with centrifugal pumps, especially with vortex pumps, the path between the moving and stationary components within the pump must at least correspond to the nominal width of the suction or discharge nozzle, otherwise the ball passage is correspondingly smaller.
Überschreitet der schaufellose Raum zwischen der Schaufelfront und der gegenüberliegenden Gehäusewand ein gewisses Maß, reduziert sich die Effizienz der Freistrompumpe. Je größer der Abstand zwischen dem Laufrad und der saugseitigen Gehäusewand ist, desto geringer ist der Wirkungsgrad der Freistrompumpe.If the vane-less space between the vane front and the opposite housing wall exceeds a certain amount, the efficiency of the vortex pump is reduced. The greater the distance between the impeller and the housing wall on the suction side, the lower the efficiency of the vortex pump.
Aufgabe der Erfindung ist es, eine Freistrompumpe anzugeben, die Medien auch mit größeren Feststoffen fördern kann und dabei einen bauartgemäß möglichst hohen Wirkungsgrad aufweist. Die Freistrompumpe soll sich durch eine möglichst kostengünstige Herstellungsweise auszeichnen und eine hohe Lebensdauer gewährleisten. Zudem soll die Freistrompumpe möglichst vielfältig einsetzbar und wenig störanfällig sein, sowie einen günstigen NPSH-Wert aufweisen. Kavitationsschäden sollen vermieden werden. Diese Aufgabe wird durch eine Freistrompumpe mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Varianten sind den Unteransprüchen zu entnehmen.The object of the invention is to provide a free-flow pump that can convey media with relatively large solids and, in accordance with the design, has the highest possible degree of efficiency. The free-flow pump should be distinguished by a method of manufacture that is as inexpensive as possible and should ensure a long service life. In addition, the vortex pump should be used as widely as possible and be less susceptible to failure, and should have a favorable NPSH value. Cavitation damage should be avoided. This object is achieved by a free-flow pump with the features of claim 1. Preferred variants can be found in the subclaims.
Erfindungsgemäß verzweigen sich die Schaufeln. Ausgehend von einem Ursprungsschaufelabschnitt zweigt mindestens ein weiterer Schaufelabschnitt ab. Die Schaufeln erstrecken sich vorzugsweise in gekrümmter Weise von innen nach außen in radialer Richtung. An einem Verzweigungspunkt, zweigt ein erster Schaufelabschnitt ab. Mit weiter zunehmendem Radius können weitere Verzweigungspunkte folgen. Bei einer Variante der Erfindung bilden abzweigende Schaufelabschnitte Ausgangspunkte für weitere Abzweigungen.According to the invention, the blades branch. Starting from an original blade section, at least one further blade section branches off. The shovels extend preferably in a curved manner from the inside to the outside in the radial direction. A first blade section branches off at a branch point. As the radius increases further, further branch points can follow. In a variant of the invention, branching blade sections form starting points for further branches.
Durch die erfindungsgemäße Abzweigungskonstruktion der Schaufeln wird ein kaskadierendes Laufrad geschaffen. Durch die Abzweigungen werden freie Räume vermieden, in denen es zu unerwünschten Wirbelbildungen kommt, durch die der Wirkungsgrad der Pumpe herabgesetzt würde. Bei der erfindungsgemäßen Pumpe wird ein Pumpvolumen geschaffen, das zu einem hohen Wirkungsgrad bei geringer Durchflussmenge führt. Die erfindungsgemäße Freistrompumpe weist aufgrund der Verzweigungskonstruktion einen verhältnismäßig hohen Wirkungsgrad auf und gewährleistet dabei gleichzeitig eine zuverlässige Förderung feststoffhaltiger Medien, ohne dass es zu Verstopfungen kommt.The inventive branch construction of the blades creates a cascading impeller. The branches avoid free spaces in which undesirable eddy formations occur, which would reduce the efficiency of the pump. In the pump according to the invention, a pump volume is created which leads to a high degree of efficiency with a low flow rate. The free-flow pump according to the invention has a relatively high degree of efficiency due to the branching design and at the same time ensures reliable conveyance of media containing solids without clogging.
Im Vergleich zu herkömmlichen Freistromrädern mit Schaufeln, die von innen nach außen immer dicker werden, ist das erfindungsgemäße Laufrad deutlich leichter. Innerhalb einer Schaufel weist die erfindungsgemäße Konstruktion Räume zwischen den Schaufelabschnitten auf, die zu einer Art Materialeinsparung führen. Dadurch wird ein leichtes Laufrad geschaffen, das einen hohen Wirkungsgrad aufweist.Compared to conventional vortex impellers with blades that become thicker and thicker from the inside out, the impeller according to the invention is significantly lighter. Within a blade, the construction according to the invention has spaces between the blade sections, which lead to a kind of material saving. This creates a lightweight impeller that is highly efficient.
Bei einer besonders vorteilhaften Variante der Erfindung setzt der Ursprungsschaufelabschnitt an einem Nabenkörper des Laufrades an. Der Nabenkörper dient der Befestigung des Laufrades auf einer Welle und ist auf der Tragscheibe des Laufrades ausgebildet bzw. wird von der Tragscheibe gebildet. Der Ursprungsschaufelabschnitt setzt am Nabenkörper an und erstreckt sich mit einer Krümmung von innen nach außen. Ab einem bestimmten Radius zweigt ein erster Schaufelabschnitt ab.In a particularly advantageous variant of the invention, the original blade section is attached to a hub body of the impeller. The hub body is used to fasten the impeller on a shaft and is formed on the support disc of the impeller or is formed by the support disc. The original blade section is attached to the hub body and extends with a curvature from the inside to the outside. A first blade section branches off from a certain radius.
Bei einer besonders vorteilhaften Variante der Erfindung liegt der erste Verzweigungspunkt in Höhe des Einlaufradius des Saugmundes, sodass das Medium axial durch den Saugmund in einen Bereich des Laufrades einströmt, der in der Mitte nicht verzweigt ist und dann das Medium durch die Rotationsbewegung des Laufrades radial nach außen in die verzweigten Bereiche der Schaufeln gefördert wird.In a particularly advantageous variant of the invention, the first branch point is at the level of the inlet radius of the suction mouth, so that the medium flows axially through the suction mouth into a region of the impeller which is not branched in the middle and then the medium is conveyed radially outward into the branched areas of the blades by the rotational movement of the impeller.
Vorzugsweise befindet sich der erste Verzweigungspunkt innerhalb der ersten Hälfte der Schaufel, bezogen auf die radiale Erstreckung der Schaufel beginnend vom Ursprung. Bei einer besonders günstigen Variante zweigt ein Schaufelabschnitt im ersten Drittel des vorangegangenen Schaufelabschnitts ab, wobei es sich besonders vorteilhaft erweist, wenn der nachfolgende Schaufelabschnitt in einem ersten Teilbereich des vorangegangenen Schaufelabschnitts beginnt.The first branch point is preferably located within the first half of the blade, based on the radial extent of the blade, starting from the origin. In a particularly favorable variant, a blade section branches off in the first third of the preceding blade section, it being particularly advantageous if the following blade section begins in a first partial area of the preceding blade section.
Der Ursprungsschaufelabschnitt und alle weiteren abzweigenden Schaufelabschnitte der Schaufel weisen vorzugsweise einen entgegen der Drehrichtung gekrümmten Verlauf auf, sogenannte rückwärts gekrümmte Schaufeln. Jede Schaufel steht mit ihren einzelnen Schaufelabschnitten von der Tragscheibe in Saugrichtung hervor.The original vane section and all further branching vane sections of the vane preferably have a course that is curved counter to the direction of rotation, so-called backwardly curved blades. Each blade protrudes with its individual blade sections from the support disk in the suction direction.
Bei einer Variante der Erfindung weisen die jeweils nachfolgenden abzweigenden Schaufelabschnitte gegenüber den vorangeordneten Schaufelabschnitten eine stärkere Krümmung auf.In a variant of the invention, the respective subsequent branching vane sections have a greater curvature than the pre-arranged vane sections.
Bei einer bevorzugten Variante der Erfindung erstrecken sich der Ursprungsschaufelabschnitt und/oder die jeweils abzweigenden Schaufelabschnitte zum Außendurchmesser des Laufrades.In a preferred variant of the invention, the original blade section and / or the respective branching blade sections extend to the outer diameter of the impeller.
Bei einer besonders günstigen Ausführung der Erfindung ist das Laufrad mit den Schaufeln einstückig ausgebildet. Dabei erweist es sich als vorteilhaft, wenn das Laufrad und/oder die Schaufeln aus einem metallischen Werkstoff gefertigt sind. Vorzugsweise kommt dabei ein Gusswerkstoff zum Einsatz.In a particularly favorable embodiment of the invention, the impeller is designed in one piece with the blades. It proves to be advantageous if the impeller and / or the blades are made of a metallic material. A cast material is preferably used.
Zwischen den Schaufeln sind Räume zum Eintauchen einer Kugel um eine bestimmte Tiefe ausgebildet. Durch die erfindungsgemäße Konstruktion wird ein ausreichender Kugeldurchgang bei gleichzeitig hohem Förderungswirkungsgrad der Pumpe gewährleistet. Die Ausbildung von verzweigten Schaufeln mit jeweils ausreichenden Zwischenräumen zwischen den Schaufeln erlaubt es, den Abstand zwischen der zulaufseitigen Gehäusewand und der Schaufelfront zu reduzieren und dabei dennoch einen ausreichenden Kugeldurchgang zu gewährleisten. Dadurch weist die Freistrompumpe einen hohen Wirkungsgrad auf und gewährleistet gleichzeitig eine zuverlässige Förderung feststoffhaltiger Medien, ohne dass es zu Verstopfungen kommt.Spaces for immersing a sphere by a certain depth are formed between the blades. The construction according to the invention ensures a sufficient ball passage with a high delivery efficiency of the pump at the same time. The formation of branched blades with sufficient spaces in between between the blades makes it possible to reduce the distance between the housing wall on the inlet side and the blade front, while still ensuring a sufficient ball passage. As a result, the vortex pump has a high degree of efficiency and at the same time ensures reliable conveyance of media containing solids without clogging.
Bei einer Variante der Erfindung sind alle Schaufeln des Laufrades kongruent zueinander ausgebildet und weisen die gleiche Form auf.In a variant of the invention, all the blades of the impeller are designed to be congruent to one another and have the same shape.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der Beschreibung von Ausführungsbeispielen anhand von Zeichnungen und aus den Zeichnungen selbst.Further features and advantages of the invention emerge from the description of exemplary embodiments with reference to the drawings and from the drawings themselves.
Dabei zeigt:
- Figur 1
- einen schematischen Meridianschnitt durch eine Freistrompumpe,
Figur 2- eine perspektivische Darstellung eines Freistromrades mit drei Schaufeln,
- Figur 3
- eine Draufsicht des Freistromrades gemäß der Darstellung in
,Figur 2 Figur 4- eine perspektivische Darstellung eines Freistromrades mit zwei Schaufeln,
Figur 5- eine Draufsicht des Freistromrades gemäß der Darstellung in
.Figur 4
- Figure 1
- a schematic meridional section through a free-flow pump,
- Figure 2
- a perspective view of a vortex impeller with three blades,
- Figure 3
- a top view of the vortex impeller as shown in FIG
Figure 2 , - Figure 4
- a perspective view of a vortex impeller with two blades,
- Figure 5
- a top view of the vortex impeller as shown in FIG
Figure 4 .
In
Der Saugmund 10 wird von einem saugseitigen Gehäuseteil 11 gebildet. Der Saugmund 10 bildet einen Eintritt für das feststoffhaltige Medium und weist einen Durchmesser D auf. Das saugseitige Gehäuseteil 11 ist als Saugdeckel ausgebildet.The
Das Laufrad 2 ist in einem Pumpengehäuse 15 angeordnet.The
Die Frontseite des Freistromrades 2 weist an ihrem äußeren Rand einen Abstand A zur Innenseite des saugseitigen Gehäuseteils 11 auf. Dabei ist der Abstand A vorzugsweise als die Strecke definiert, den eine Normale, welche senkrecht zur saugseitigen Gehäusewand 8 steht, zum äußeren Rand der Schaufelfront des Laufrades 2 hat. Der Abstand A ist kleiner als der Durchmesser D.The front side of the
Die Höhe h der Schaufeln 7 nimmt im Ausführungsbeispiel in radialer Richtung ab, so dass die Schaufelfront einen leicht schrägen oder kegelförmigen Verlauf aufweist.In the exemplary embodiment, the height h of the
Auf der Tragscheibe 6 sind drei Schaufeln 7 angeordnet. Die Schaufeln 7 sind kongruent. Jede Schaufel 7 weist einen Ursprungsschaufelabschnitt 12 auf, der sich vom Nabenkörper 4 mit einer Krümmung radial nach außen erstreckt.Three
Vom Ursprungsschaufelabschnitt 12 zweigt ab einem Verzweigungspunkt 13 ein Schaufelabschnitt 14 ab. Sowohl der Ursprungsschaufelabschnitt 12 als auch der abzweigende Schaufelabschnitt 14 erstrecken sich bis zum Außendurchmesser des Laufrades 2.From a
Der Verzweigungspunkt 13 befindet sich in Höhe des Einlaufradius des Saugmundes 10, der in
Die Schaufelabschnitte 12, 14 weisen einen entgegen der Drehrichtung gekrümmten Verlauf auf. Die weisen einen rückwärts gekrümmten Verlauf auf. Der abzweigende Schaufelabschnitt 14 weist gegenüber dem Ursprungsschaufelabschnitt 12 eine stärkere Krümmung auf.The
Im Ausführungsbeispiel ist das Laufrad 2, das aus der Tragscheibe 6 mit den Schaufeln 7 und dem Nabenkörper 4 besteht, einstückig ausgebildet. Es besteht aus einem Gusswerkstoff. Zwischen den Schaufeln 7 sind Räume 18 zum Eintauchen einer Kugel ausgebildet. Dadurch wird ein Kugeldurchgang gewährleistet, der eine Förderung auch von feststoffhaltigen Medien gewährleistet.In the exemplary embodiment, the
Claims (13)
- Vortex pump having an impeller (2) which has vanes (7) for delivering solids-containing media,
characterized in that,
at least for a portion of the vanes (7), proceeding from an origin vane section (12), at least one vane section (14, 17) branches off. - Vortex pump according to Claim 1, characterized in that the origin vane section (12) is joined to a hub body (4).
- Vortex pump according to Claim 1 or 2,
characterized in that a branch point (13) is situated at the height of a run-in radius of a suction mouth. - Vortex pump according to one of Claims 1 to 3,
characterized in that a branch point (13) is situated, in relation to a radial extent of the vane starting from the origin thereof, within the first half, preferably within the first third, of the vane (7). - Vortex pump according to one of Claims 1 to 4,
characterized in that the vane sections (12, 14, 17) have a rearwardly curved profile. - Vortex pump according to one of Claims 1 to 5,
characterized in that the in each case branching-off vane sections (13, 14) have a larger curvature in comparison with the preceding vane sections. - Vortex pump according to one of Claims 1 to 6,
characterized in that the vane sections (12, 14, 17) extend to the outer diameter of the impeller (2) . - Vortex pump according to one of Claims 1 to 7,
characterized in that the impeller (2) is formed in one piece as a rear shroud (6) with the vanes (7). - Vortex pump according to one of Claims 1 to 8,
characterized in that the impeller (2) is manufactured from a metallic material, preferably a cast material. - Vortex pump according to one of Claims 1 to 9,
characterized in that spaces (18) for dipping a ball are formed between the vanes (7). - Vortex pump according to one of Claims 1 to 10,
characterized in that all the vanes (7) of the impeller (2) are congruent. - Vortex pump according to one of Claims 1 to 11,
characterized in that the vanes (7) extend from an origin continuously in a radial direction. - Vortex pump according to one of Claims 1 to 12,
characterized in that further vane sections (17) branch off from branching-off vane sections (14).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL17804118T PL3559475T3 (en) | 2016-12-21 | 2017-11-14 | Vortex pump |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016225891.5A DE102016225891A1 (en) | 2016-12-21 | 2016-12-21 | Vortex pump |
PCT/EP2017/079120 WO2018114143A1 (en) | 2016-12-21 | 2017-11-14 | Vortex pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3559475A1 EP3559475A1 (en) | 2019-10-30 |
EP3559475B1 true EP3559475B1 (en) | 2021-01-06 |
Family
ID=60452613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17804118.2A Active EP3559475B1 (en) | 2016-12-21 | 2017-11-14 | Vortex pump |
Country Status (11)
Country | Link |
---|---|
US (1) | US11187232B2 (en) |
EP (1) | EP3559475B1 (en) |
CN (1) | CN110073112B (en) |
AU (1) | AU2017380927B2 (en) |
BR (1) | BR112019010727A2 (en) |
CA (1) | CA3045062A1 (en) |
DE (1) | DE102016225891A1 (en) |
HU (1) | HUE053792T2 (en) |
MX (1) | MX2019006127A (en) |
PL (1) | PL3559475T3 (en) |
WO (1) | WO2018114143A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU197931U1 (en) * | 2019-11-11 | 2020-06-05 | Общество с ограниченной ответственностью "НПО АкваБиоМ" | Free Swirl Submersible Pump |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61144292U (en) * | 1985-02-27 | 1986-09-05 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE470221C (en) | 1926-10-29 | 1929-01-08 | Karl Plischke | Impeller for centrifugal pumps, especially for pumping liquids with coarse and fibrous additions |
US3013501A (en) | 1956-12-27 | 1961-12-19 | Skoglund & Olson Ab | Centrifugal impeller |
US3128051A (en) * | 1960-11-07 | 1964-04-07 | Dag Mfg Co | Pump |
US3267870A (en) * | 1964-06-10 | 1966-08-23 | Diamond Alkali Co | Combined centrifugal pump and distributor |
JPS5426106U (en) | 1977-07-26 | 1979-02-20 | ||
DK164135C (en) | 1990-05-10 | 1992-10-12 | Grundfos Int | centrifugal |
DE10301630A1 (en) | 2003-01-17 | 2004-07-29 | Ksb Aktiengesellschaft | 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 |
DE10301629B4 (en) | 2003-01-17 | 2013-05-29 | Ksb Aktiengesellschaft | Vortex pump |
US20060204363A1 (en) * | 2005-03-14 | 2006-09-14 | Jun-Chien Yen | Centrifugal blade unit of a cooling fan |
CN2842023Y (en) * | 2005-10-28 | 2006-11-29 | 陈瑜 | The impeller that is used for centrifugal pump and centrifugal fan |
EP2228541B1 (en) * | 2009-03-09 | 2012-11-14 | Grundfos Management A/S | Rotor for a rotary pump |
CN205117796U (en) * | 2015-11-24 | 2016-03-30 | 重庆水泵厂有限责任公司 | Centrifugal pump impeller with low specific speed |
-
2016
- 2016-12-21 DE DE102016225891.5A patent/DE102016225891A1/en not_active Withdrawn
-
2017
- 2017-11-14 PL PL17804118T patent/PL3559475T3/en unknown
- 2017-11-14 US US16/471,456 patent/US11187232B2/en active Active
- 2017-11-14 WO PCT/EP2017/079120 patent/WO2018114143A1/en unknown
- 2017-11-14 BR BR112019010727A patent/BR112019010727A2/en active Search and Examination
- 2017-11-14 HU HUE17804118A patent/HUE053792T2/en unknown
- 2017-11-14 EP EP17804118.2A patent/EP3559475B1/en active Active
- 2017-11-14 CN CN201780079088.2A patent/CN110073112B/en active Active
- 2017-11-14 AU AU2017380927A patent/AU2017380927B2/en not_active Ceased
- 2017-11-14 MX MX2019006127A patent/MX2019006127A/en unknown
- 2017-11-14 CA CA3045062A patent/CA3045062A1/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61144292U (en) * | 1985-02-27 | 1986-09-05 |
Also Published As
Publication number | Publication date |
---|---|
HUE053792T2 (en) | 2021-07-28 |
MX2019006127A (en) | 2019-08-14 |
CN110073112A (en) | 2019-07-30 |
BR112019010727A2 (en) | 2019-10-01 |
WO2018114143A1 (en) | 2018-06-28 |
US11187232B2 (en) | 2021-11-30 |
AU2017380927B2 (en) | 2022-09-22 |
CA3045062A1 (en) | 2018-06-28 |
DE102016225891A1 (en) | 2018-06-21 |
AU2017380927A1 (en) | 2019-06-13 |
US20210131438A1 (en) | 2021-05-06 |
EP3559475A1 (en) | 2019-10-30 |
CN110073112B (en) | 2021-06-18 |
PL3559475T3 (en) | 2021-07-05 |
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