EP1584820A1 - Mixed flow pump - Google Patents
Mixed flow pump Download PDFInfo
- Publication number
- EP1584820A1 EP1584820A1 EP04405214A EP04405214A EP1584820A1 EP 1584820 A1 EP1584820 A1 EP 1584820A1 EP 04405214 A EP04405214 A EP 04405214A EP 04405214 A EP04405214 A EP 04405214A EP 1584820 A1 EP1584820 A1 EP 1584820A1
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- EP
- European Patent Office
- Prior art keywords
- vane
- edge
- inlet
- impeller
- 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.)
- Granted
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- 239000007787 solid Substances 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000000654 additive Substances 0.000 abstract 1
- 239000008247 solid mixture Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 2
- 206010010774 Constipation Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/04—Helico-centrifugal pumps
Definitions
- the invention relates to a fferenzentrifugalradpumpe according The preamble of claim 1.
- the invention further relates to a Method for conveying a medium with a Screw centrifugal pump according to the preamble of Claim 9.
- centrifugal pump comprises a single, helical extending blade, which rotatably in a pump housing is arranged.
- This pump is particularly suitable for pumping with solid admixtures permeated liquids, in particular for the promotion of waste water with long-fiber Ingredients.
- the invention is based on the object To provide screw Centrifugalradpumpe which when conveying with solid admixtures interspersed liquids more advantageous Features.
- Screw centrifugal pump comprising a pump housing with an inlet opening and a within the pump housing arranged impeller, which has a spiral running Having inlet blade edge, wherein in the region of Inlet opening projecting into the interior of the impeller Guide vane is arranged.
- the guide vane the screw centrifugal wheel pump on a vane edge which in the direction of rotation of the impeller increasingly in Flow direction in the interior against the center of the Impeller protrudes.
- the screw centrifugal pump according to the invention is especially advantageous in promoting higher concentration of fibrous solids prone to plait. Will the fibrous Stranded solids concentration is always higher, this leads to the suction line to a bale formation and increased friction in the impeller channel. If it reaches a certain limit, so The hydraulic forces alone are no longer sufficient for the material which has the consequence that the Screw centrifugal pump clogged and blocked.
- the Screw centrifugal pump according to the invention prevents this Block by the spiral entry edge of the blade Schneckenradterrorisms against the fixed, protruding vane rotates, wherein the inlet blade edge and the vane cooperate in such a way that the Intermediate solid masses through the rotating Entry blade edge are detected and along the flow direction the inlet blade edge are loosened and / or pressed.
- vane and Screw centrifugal wheel is added to the pumped medium to the hydraulic forces still a mechanical, im essentially acting in the direction of conveying force, what a Accumulation of solid components prevented in the conveying path.
- these two Space curves preferably so mutually adapted running are designed that this when rotating the impeller under mutually short distance or touching each other move past each other.
- Which is between the two Space curves located solids are mechanically in Course of the space curves, and thus essentially in Flow direction moves, and thereby loosened or in Flow direction pressed.
- the Guide vane edge and / or the inlet blade edge at least partially on a cutting edge, so that the solids between the also mechanically moving space curves be crushed.
- This is a crushing or dicing of the braids or fibers, which is a Attachment of the braids prevented in the conveyor and thus one continuous, reliable operation of the Screw centrifugal pump guaranteed without interruption.
- the mutual shear, separation or clamping effect of the two Space curves also allow, depending on the design of the Guide vane edge and / or the inlet vane edge, a Cutting, crushing or weakening fibrous Solids like paper, strings, wood or solids like Plastic, rubber, metal or glass.
- the screw centrifugal pump 1 comprises a fferenzentrifugalrad 2, which about a rotational axis 2d in Direction of rotation 4a is rotatably disposed in a pump housing 3.
- the fferenzentrifugalrad 2 has a spiral running Entry blade edge 2a and 2c on an outer contour.
- the fferenzentrifugalrad 2 is fixed to a pump shaft 4 connected.
- the pump housing 3 comprises a Saugkonusgepuruseteil 3a, a spiral housing part 3b, a Inlet opening 3c and an outlet opening 3d. In the field of Inlet opening 3 c is a in the interior of the pump housing 3rd and in the interior of the lusterenzentrifugalrades.
- FIG. 2 shows a direction designated by A in FIG Front view of the inlet opening 3 c, wherein in the interior of the pump. 1 the impeller 2 and the vane 5 can be seen. At the impeller 2 is the spiraling inlet blade edge 2a visible, which falls off against the axis of rotation 2d and axially into this grows. The foremost portion of the entrance blade edge 2a is not directly visible because of the vane 5 and therefore shown in dashed lines.
- the guide vane 5 is designed in such a way that the vane edge 5a in the direction of rotation 4a increasingly in the direction the axis of rotation 2d, both in the radial and in the axial direction, in the interior of the impeller 2 protrudes.
- the vane edge 5a forms a solid space curve, whereas the inlet blade edge 2a forms a rotatable about the wheel axis 2d space curve.
- These two Room curves 2a, 5a are in the illustrated embodiment such mutually adapted designed that the Vane edge 5a a vane edge portion 5b and the Entry blade edge 2a a blade edge portion 2b within which the vane edge 5a and the Inlet blade edge 2a depending on the respective position of the Impeller 2 have a mutually small distance or yourself touching each other.
- the mutually small distance can for example, have a value between 0.1 and 30 mm.
- Position with mutually least distance is the point P1 on the blade edge portion 2b and the P2 on the Guide vane edge portion 5b shown.
- the vane 5 can in many different ways such Pump housing 3 are arranged and configured that the fixed vane edge 5a and the rotating Ingress blade edge 2a cooperate such that solids by the mutual cooperation of the edges 2a, 5a mechanically conveyed, in particular in the flow direction S.
- the blade edge section 2b in FIG Point P1 has a tangent T1 and the vane edge portion 5b at point P2 has a tangent T2, these two tangents T1, T2 as viewed from the inlet opening 3c of a viewed Have cut angle ⁇ .
- This angle ⁇ is at least 10 Degrees, and is preferably between 30 degrees and 150 degrees, in particular between 60 degrees and 120 degrees.
- the angle ⁇ is preferably never smaller than the angle at which sliding the solid on the inlet blade edge 2a or between Entry blade edge 2a and vane edge 5a no longer is guaranteed.
- Figures 3 and 4 show in two detail views, analogous to Representation according to Figure 2, two different running Space curves or inlet blade edge 2a and vane edge 5a, wherein the enclosed angle ⁇ of the tangents T1, T2 of the Points P1, P2 in Figure 3 about 110 degrees and in Figure 4 about 90 degrees is.
- This angle ⁇ is determined by the course of the space curves 2a, 5a determined, and thus in the construction of the fferenzentrifugalradpumpe 1 are selected accordingly.
- the Course of the space curves 2a, 5a can be chosen such that the Angle ⁇ during movement of points P1, P2 in direction Q2 remains substantially constant.
- Space curves 2a, 5a By running accordingly Space curves 2a, 5a, the angle ⁇ during the movement of the Points P1, P2 also increase and / or decrease in direction Q2.
- At least part of the Blade edge portion 2b and / or the Leitschaufelkantenabiteses 5b as edge, cutting edge or Blade designed to a solid, which is located between the Sections 2b, 5b is to weaken or sever.
- the screw centrifugal pump corresponding to those expected solids and admixtures thereby optimized be that the edge portions 2b, 5b and their angle ⁇ appropriately optimized to clog the pump to prevent and, for example, a good To achieve pump efficiency.
- FIG. 5 shows a further exemplary embodiment of a fferenzentrifugalradpumpe 1, in whose inlet opening 3c a wear-resistant sleeve 7 is arranged, which with the guide vane. 5 is firmly connected. With a fastening means, not shown the sleeve 7 can be firmly connected to the pump housing 3.
- the sleeve 7 and thus the Guide vane 5 in the direction of R movable has the particular advantage that the distance between inlet blade edge 2a and vane edge 5a, in particular the distance of the points P1, P2 in the direction of R or Q1 is adjustable.
- the inlet blade edge 2a and / or the Vane edge 5a wears off during operation of the pump, so that the distance of points P1, P2 during operation with increased in time.
- the sleeve 7 thus enables the position of Guide vane 5 in the direction of displacement R or Q 1 after certain To reset time intervals again.
- the sleeve 7 can also be like this be configured that this also in the inlet opening 3c rotatable, i. with respect to the wheel axle 2d is rotatable about the sleeve 7 to rotate in the dissolved state, and thus the position of the To rotate the vane 5.
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- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Centrifugal Separators (AREA)
Abstract
Description
Die Erfindung betrifft eine Schraubenzentrifugalradpumpe gemäss
dem Oberbegriff von Anspruch 1. Die Erfindung betrifft weiter ein
Verfahren zum Fördern eines Mediums mit einer
Schraubenzentrifugalradpumpe gemäss dem Oberbegriff von
Anspruch 9.The invention relates to a Schraubenzentrifugalradpumpe according
The preamble of
Aus der Druckschrift CH 394814 ist eine Schraubenzentrifugalradpumpe, auch als Schneckenradpumpe bezeichnet, bekannt. Eine derartige Kreiselpumpe umfasst eine einzige, schraubenförmig verlaufende Schaufel, welche drehbar in einem Pumpengehäuse angeordnet ist. Diese Pumpe ist insbesondere zur Förderung von mit festen Beimengungen durchsetzten Flüssigkeiten geeignet, insbesondere zur Förderung von Schmutzwasser mit langfaserigen Bestandteilen.From the document CH 394814 is a screw centrifugal, Also known as worm gear known. A such centrifugal pump comprises a single, helical extending blade, which rotatably in a pump housing is arranged. This pump is particularly suitable for pumping with solid admixtures permeated liquids, in particular for the promotion of waste water with long-fiber Ingredients.
Die Fördermöglichkeit von Flüssigkeiten mit hoher Konzentration an faserigen, beispielsweise zur Zopfbildung neigenden Feststoffen ist begrenzt. Dies kann Anlagerungen fester Bestandteile im Förderweg oder eine dadurch hervorgerufene Verstopfung bis hin zum Pumpenstillstand zur Folge haben. The possibility of conveying liquids with high concentration fibrous, for example, prone to plait solids limited. This can accumulate solid constituents in the conveying path or a constipation caused thereby up to Pump standstill result.
Der Erfindung liegt die Aufgabe zugrunde, eine Schraubenzentrifugalradpumpe zu schaffen, die beim Fördern von mit festen Beimengungen durchsetzten Flüssigkeiten vorteilhaftere Eigenschaften aufweist.The invention is based on the object To provide screw Centrifugalradpumpe which when conveying with solid admixtures interspersed liquids more advantageous Features.
Diese Aufgabe wird gelöst mit einer Schraubenzentrifugalradpumpe
aufweisend die Merkmale von Anspruch 1. Die Unteransprüche 2 bis
8 betreffen weitere, vorteilhafte Ausgestaltungen. Die Aufgabe wird
weiter gelöst mit einem Verfahren aufweisend die Merkmale von
Anspruch 9.This problem is solved with a screw centrifugal pump
having the features of
Die Aufgabe wird insbesondere gelöst mit einer Schraubenzentrifugalradpumpe umfassend ein Pumpengehäuse mit einer Eintrittsöffnung sowie ein innerhalb des Pumpengehäuses angeordnetes Laufrad, welches eine spiralförmig verlaufende Eintrittsschaufelkante aufweist, wobei im Bereich der Eintrittsöffnung eine in den Innenraum des Laufrades vorstehende Leitschaufel angeordnet ist.The problem is solved in particular with a Screw centrifugal pump comprising a pump housing with an inlet opening and a within the pump housing arranged impeller, which has a spiral running Having inlet blade edge, wherein in the region of Inlet opening projecting into the interior of the impeller Guide vane is arranged.
In einer besonders vorteilhaften Ausgestaltung weist die Leitschaufel der Schraubenzentrifugalradpumpe eine Leitschaufelkante auf, welche in Drehrichtung des Laufrades zunehmend in Strömungsrichtung in den Innenraum gegen das Zentrum des Laufrades vorsteht.In a particularly advantageous embodiment, the guide vane the screw centrifugal wheel pump on a vane edge, which in the direction of rotation of the impeller increasingly in Flow direction in the interior against the center of the Impeller protrudes.
Die erfindungsgemässe Schraubenzentrifugalradpumpe ist insbesondere vorteilhaft beim Fördern höherer Konzentration von faserigen zu Zopfbildung neigenden Feststoffen. Wird die faserige angeschwemmte Feststoffkonzentration immer höher, so führt dies in der Saugleitung zu einer Ballenbildung und einer erhöhten Reibung im Laufradkanal. Wird dabei ein gewisser Grenzwert erreicht, so genügen die hydraulischen Kräfte alleine nicht mehr um das Material zu fördern, was zur Folge hat, dass die Schraubenzentrifugalradpumpe verstopft und blockiert. Die erfindungsgemässe Schraubenzentrifugalradpumpe verhindert dieses Blockieren indem sich die spiralförmige Eintrittsschaufelkante des Schneckenradanfangs gegenüber der fest angeordneten, vorstehenden Leitschaufel dreht, wobei die Eintrittsschaufelkante und die Leitschaufel derart zusammenwirken, dass die sich dazwischen befindlichen Feststoffmassen durch die rotierende Eintrittsschaufelkante erfasst werden und in Flussrichtung entlang der Eintrittsschaufelkante aufgelockert und/oder gepresst werden. Durch dieses Zusammenwirken von Leitschaufel und Schraubenzentrifugalrad wird auf das geförderte Medium zusätzlich zu den hydraulischen Kräften noch eine mechanische, im wesentlichen in Förderrichtung wirkende Kraft ausgeübt, was eine Anlagerung fester Bestandteile im Förderweg verhindert.The screw centrifugal pump according to the invention is especially advantageous in promoting higher concentration of fibrous solids prone to plait. Will the fibrous Stranded solids concentration is always higher, this leads to the suction line to a bale formation and increased friction in the impeller channel. If it reaches a certain limit, so The hydraulic forces alone are no longer sufficient for the material which has the consequence that the Screw centrifugal pump clogged and blocked. The Screw centrifugal pump according to the invention prevents this Block by the spiral entry edge of the blade Schneckenradanfangs against the fixed, protruding vane rotates, wherein the inlet blade edge and the vane cooperate in such a way that the Intermediate solid masses through the rotating Entry blade edge are detected and along the flow direction the inlet blade edge are loosened and / or pressed. Through this interaction of vane and Screw centrifugal wheel is added to the pumped medium to the hydraulic forces still a mechanical, im essentially acting in the direction of conveying force, what a Accumulation of solid components prevented in the conveying path.
In einer weiteren vorteilhaften Ausgestaltung bildet die Leitschaufelkante eine feste Raumkurve und die Eintrittsschaufelkante eine auf Grund des rotierbaren Schraubenzentrifugalrades rotierbare Raumkurve, wobei diese beiden Raumkurven vorzugsweise derart gegenseitig angepasst verlaufend ausgestaltet sind, dass sich diese beim Rotieren des Laufrades unter gegenseitig geringem Abstand oder sich gegenseitig berührend aneinander vorbei bewegen. Die sich zwischen den beiden Raumkurven befindlichen Feststoffe werden dabei mechanisch in Verlaufsrichtung der Raumkurven, und dadurch im wesentlichen in Strömungsrichtung bewegt, und dabei aufgelockert oder in Strömungsrichtung gepresst. In a further advantageous embodiment forms the Vane edge a solid space curve and the Entrance blade edge one due to the rotatable Screw centrifugal wheel rotatable space curve, these two Space curves preferably so mutually adapted running are designed that this when rotating the impeller under mutually short distance or touching each other move past each other. Which is between the two Space curves located solids are mechanically in Course of the space curves, and thus essentially in Flow direction moves, and thereby loosened or in Flow direction pressed.
In einer weiteren vorteilhaften Ausgestaltung weisen die Leitschaufelkante und/oder die Eintrittsschaufelkante zumindest teilweise eine Schneidkante auf, sodass die Feststoffe zwischen den sich gegenseitig bewegenden Raumkurven zudem noch mechanisch zerkleinert werden. Bei zu Zopfbildung neigenden Feststoffen bewirkt dies ein Zerkleinern oder Zertrennen der Zöpfe bzw. Fasern, was eine Anlagerung der Zöpfe im Förderweg verhindert und somit einen kontinuierlichen, zuverlässigen Betrieb der Schraubenzentrifugalradpumpe ohne Unterbruch gewährleistet.In a further advantageous embodiment, the Guide vane edge and / or the inlet blade edge at least partially on a cutting edge, so that the solids between the also mechanically moving space curves be crushed. In case of tendency to plait solids causes This is a crushing or dicing of the braids or fibers, which is a Attachment of the braids prevented in the conveyor and thus one continuous, reliable operation of the Screw centrifugal pump guaranteed without interruption.
Die gegenseitige Scher-, Trenn- oder Klemmwirkung der beiden Raumkurven ermöglich auch, abhängig von der Ausgestaltung der Leitschaufelkante und/oder der Eintrittsschaufelkante, ein Durchtrennen, Zerkleinern oder Schwächen von faserförmigen Feststoffen wie Papier, Schnüren, Holz oder Feststoffen wie Kunststoff, Gummi, Metall oder Glas.The mutual shear, separation or clamping effect of the two Space curves also allow, depending on the design of the Guide vane edge and / or the inlet vane edge, a Cutting, crushing or weakening fibrous Solids like paper, strings, wood or solids like Plastic, rubber, metal or glass.
Die Erfindung wird nachfolgend an Hand von Ausführungsbeispielen im Detail beschrieben. Es zeigen:
Figur 1- einen Axialschnitt durch eine Schraubenzentrifugalradpumpe;
Figur 2- eine Frontansicht der Eintrittsöffnung der Schraubenzentrifugalradpumpe;
Figur 3 und 4- zwei unterschiedliche Gesamtwinkel von Eintrittsschaufelkante und Leitschaufelkante;
Figur 5- eine verschiebbar angeordnete Leitschaufel.
- FIG. 1
- an axial section through a Schraubenzentrifugalradpumpe;
- FIG. 2
- a front view of the inlet opening of the Schraubenzentrifugalradpumpe;
- FIGS. 3 and 4
- two different total angles of entrance blade edge and vane edge;
- FIG. 5
- a slidably disposed vane.
Die Schraubenzentrifugalradpumpe 1 gemäss Figur 1 umfasst ein
Schraubenzentrifugalrad 2, welches um eine Drehachse 2d in
Drehrichtung 4a drehbar in einem Pumpengehäuse 3 angeordnet ist.
Das Schraubenzentrifugalrad 2 weist eine spiralförmig verlaufende
Eintrittsschaufelkante 2a sowie eine Aussenkontur 2c auf. Das
Schraubenzentrifugalrad 2 ist mit einer Pumpenwelle 4 fest
verbunden. Das Pumpengehäuse 3 umfasst ein
Saugkonusgehäuseteil 3a, ein Spiralgehäuseteil 3b, eine
Eintrittsöffnung 3c sowie eine Austrittsöffnung 3d. Im Bereich der
Eintrittsöffnung 3c ist eine in den Innenraum des Pumpengehäuses 3
sowie in den Innenraum des Schraubenzentrifugalrades 2
vorstehende Leitschaufel 5 mit Leitschaufelkante 5a fest angeordnet.
Unter "Innenraum des Laufrades 2" wird im vorliegenden Dokument
der Innenraum verstanden, welcher bei rotierendem
Schraubenzentrifugalrad 2 von der Aussenkontur 2c umgrenzt wird,
sodass sich die Leitschaufel 5 zumindest teilweise in diesen
Innenraum erstreckt, und das Schraubenzentrifugalrad 2, wie in
Figur 1 dargestellt, im Bereich von dessen Spitze bzw. maximal
innerhalb des Schraubenradanteils 6a die Leitschaufel 5 aussen
umkreist. Die Schraubenzentrifugalradpumpe 1 umfasst zudem
einen Schraubenradanteil 6a sowie einen Zentrifugalradanteil 6b.
Das mit der Pumpe 1 geförderte Medium strömt in
Strömungsrichtung S.The screw
Figur 2 zeigt aus der in Figur 1 mit A bezeichneten Richtung eine
Frontansicht der Eintrittsöffnung 3c, wobei im Innern der Pumpe 1
das Laufrad 2 sowie die Leitschaufel 5 erkennbar ist. Beim Laufrad 2
ist die spiralförmig verlaufende Eintrittsschaufelkante 2a ersichtlich,
welche gegen die Drehachse 2d hin abfällt und axial in diese
hineinwächst. Der vorderste Abschnitt der Eintrittsschaufelkante 2a
ist wegen der Leitschaufel 5 nicht direkt sichtbar und deshalb
strichliert dargestellt.FIG. 2 shows a direction designated by A in FIG
Front view of the inlet opening 3 c, wherein in the interior of the pump. 1
the
In den Figuren 1 und 2 ist die Leitschaufel 5 derart ausgestaltet, dass
die Leitschaufelkante 5a in Drehrichtung 4a zunehmend in Richtung
der Drehachse 2d, sowohl in radialer als auch in axialer Richtung, in
den Innenraum des Laufrades 2 vorsteht. Die Leitschaufelkante 5a
bildet eine feste Raumkurve, wogegen die Eintrittsschaufelkante 2a
eine um die Radachse 2d rotierbare Raumkurve bildet. Diese beiden
Raumkurven 2a,5a sind im dargestellten Ausführungsbeispiel derart
gegenseitig angepasst verlaufend ausgestaltet, dass die
Leitschaufelkante 5a einen Leitschaufelkantenabschnitt 5b und die
Eintrittsschaufelkante 2a einen Schaufelkantenabschnitt 2b
aufweist, innerhalb welchen die Leitschaufelkante 5a und die
Eintrittsschaufelkante 2a abhängig von der jeweiligen Stellung des
Laufrades 2 einen gegenseitig geringen Abstand aufweisen oder sich
gegenseitig berühren. Der gegenseitig geringe Abstand kann
beispielsweise einen Wert zwischen 0,1 und 30 mm aufweisen. Diese
Stellung mit gegenseitig geringstem Abstand ist mit dem Punkt P1
auf dem Schaufelkantenabschnitt 2b sowie dem P2 auf den
Leitschaufelkantenabschnitt 5b dargestellt. Auf Grund der Rotation
des Laufrades 2 in Drehrichtung 4a bewegen sich die Punkt P1, P2 in
der in Figur 1 dargestellten Ansicht im wesentlichen in Richtung Q1
der Drehachse 2d, und in der in Figur 2 dargestellten Ansicht im
wesentlichen in Richtung Q2, welche dem Verlauf der
Leitschaufelkante 5a entspricht. Dadurch wird ein sich zwischen dem
Schaufelkantenabschnitt 2b und dem Leitschaufelkantenabschnitt
5b befindlicher Feststoff mechanisch im wesentlichen in Richtung Q1
beziehungsweise in Strömungsrichtung S gefördert.In FIGS. 1 and 2, the
Die Leitschaufel 5 kann auf unterschiedlichste Weise derart im
Pumpengehäuse 3 angeordnet und ausgestaltet sein, dass die
feststehende Leitschaufelkante 5a und die rotierende
Eintrittsschaufelkante 2a derart zusammenwirken, dass Feststoffe
durch das gegenseitige Zusammenwirken der Kanten 2a, 5a
mechanisch gefördert werden, insbesondere in Strömungsrichtung S.The
Wie aus Figur 2 ersichtlich weist der Schaufelkantenabschnitt 2b im
Punkt P1 eine Tangente T1 auf und der Leitschaufelkantenabschnitt
5b im Punkt P2 eine Tangente T2 auf, wobei diese beiden Tangenten
T1,T2 wie dargestellt von der Eintrittsöffnung 3c aus betrachtet einen
Schnittwinkel α aufweisen. Dieser Winkel α beträgt zumindest 10
Grad, und liegt vorzugsweise zwischen 30 Grad und 150 Grad,
insbesondere zwischen 60 Grad und 120 Grad. Der Winkel α ist
vorzugweise nie kleiner als derjenige Winkel, bei welchem ein Gleiten
des Feststoffes auf der Eintrittsschaufelkante 2a bzw. zwischen
Eintrittsschaufelkante 2a und Leitschaufelkante 5a nicht mehr
gewährleistet ist.As can be seen from FIG. 2, the blade edge section 2b in FIG
Point P1 has a tangent T1 and the vane edge portion
5b at point P2 has a tangent T2, these two tangents
T1, T2 as viewed from the inlet opening 3c of a viewed
Have cut angle α. This angle α is at least 10
Degrees, and is preferably between 30 degrees and 150 degrees,
in particular between 60 degrees and 120 degrees. The angle α is
preferably never smaller than the angle at which sliding
the solid on the
Die Figuren 3 und 4 zeigen in zwei Detailansichten, analog zur
Darstellung gemäss Figur 2, zwei unterschiedlich verlaufende
Raumkurven bzw. Eintrittsschaufelkante 2a und Leitschaufelkante
5a, wobei der umschlossene Winkel α der TangentenT1, T2 der
Punkte P1,P2 in Figur 3 etwa 110 Grad und in Figur 4 etwa 90 Grad
beträgt. Dieser Winkel α ist durch den Verlauf der Raumkurven 2a,
5a bestimmt, und kann somit bei der Konstruktion der
Schraubenzentrifugalradpumpe 1 entsprechend gewählt werden. Der
Verlauf der Raumkurven 2a,5a kann derart gewählt werden, dass der
Winkel α während der Bewegung der Punkte P1,P2 in Richtung Q2
im wesentlichen konstant bleibt. Durch entsprechend verlaufende
Raumkurven 2a,5a kann der Winkel α während der Bewegung der
Punkte P1, P2 in Richtung Q2 auch zu- und/oder abnehmen.Figures 3 and 4 show in two detail views, analogous to
Representation according to Figure 2, two different running
Space curves or
In einer vorteilhaften Ausgestaltung ist zumindest ein Teil des Schaufelkantenabschnittes 2b und/oder des Leitschaufelkantenabschnittes 5b als Kante, Schneidkante oder Klinge ausgestaltet, um einen Feststoff, welcher sich zwischen den Abschnitten 2b,5b befindet, zu schwächen oder zu durchtrennen.In an advantageous embodiment, at least part of the Blade edge portion 2b and / or the Leitschaufelkantenabschnittes 5b as edge, cutting edge or Blade designed to a solid, which is located between the Sections 2b, 5b is to weaken or sever.
Generell gilt, je grösser der Winkel α gewählt ist, desto mehr wird ein Feststoff entlang der Kantenabschnitte 2b,5b geschoben, beziehungsweise je kleiner der Winkel α gewählt wird, desto eher wird ein Feststoff durch die Kantenabschnitte 2b, 5b zertrennt. Zusätzlich kann durch eine entsprechende Formgebung auch die Länge der wirksamen Kantenabschnitte 2b, 5b bestimmt werden. Somit kann die Schraubenzentrifugalradpumpe entsprechend den zu erwartenden Feststoffen und Beimengungen dadurch optimiert werden, dass die Kantenabschnitte 2b, 5b und deren Winkel α entsprechend optimiert gewählt wird, um ein Verstopfen der Pumpe zu verhindern und beispielsweise zudem einen guten Pumpenwirkungsgrad zu erzielen.In general, the greater the angle α is chosen, the more one becomes Solid pushed along the edge portions 2b, 5b, or the smaller the angle α is chosen, the sooner it will be a solid by the edge portions 2b, 5b divided. additionally can by appropriate shaping also the length of the effective edge portions 2b, 5b are determined. Thus, can the screw centrifugal pump corresponding to those expected solids and admixtures thereby optimized be that the edge portions 2b, 5b and their angle α appropriately optimized to clog the pump to prevent and, for example, a good To achieve pump efficiency.
Figur 5 zeigt ein weiteres Ausführungbeispiel einer
Schraubenzentrifugalradpumpe 1, in deren Eintrittsöffnung 3c eine
verschleissfeste Hülse 7 angeordnet ist, welche mit der Leitschaufel 5
fest verbunden ist. Mit einem nicht dargestellten Befestigungsmittel
kann die Hülse 7 fest mit dem Pumpengehäuse 3 verbunden werden. FIG. 5 shows a further exemplary embodiment of a
Bei gelöstem Befestigungsmittel ist die Hülse 7 und damit auch die
Leitschaufel 5 in Bewegungsrichtung R verschiebbar. Diese
Anordnung weist insbesondere den Vorteil auf, dass die Distanz
zwischen Eintrittsschaufelkante 2a und Leitschaufelkante 5a,
insbesondere der Abstand der Punkte P1,P2 in Richtung R bzw. Q1
einstellbar ist. Die Eintrittsschaufelkante 2a und/oder die
Leitschaufelkante 5a nutzt sich während dem Betrieb der Pumpe ab,
sodass sich der Abstand der Punkte P1,P2 während dem Betrieb mit
der Zeit vergrössert. Die Hülse 7 ermöglicht somit die Lage der
Leitschaufel 5 in Verschiebungsrichtung R bzw. Q 1 nach gewissen
Zeitabständen wieder neu einzustellen. Die Hülse 7 kann auch derart
ausgestaltet sein, dass diese zudem in der Eintrittsöffnung 3c
rotierbar, d.h. bezüglich der Radachse 2d rotierbar ist, um die Hülse
7 im gelösten Zustand zu rotieren, und damit auch die Lage der
Leitschaufel 5 zu rotieren.When dissolved fastener, the
Claims (10)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT04405214T ATE330126T1 (en) | 2004-04-07 | 2004-04-07 | SCREW CENTRIFUGAL WHEEL PUMP |
EP04405214A EP1584820B1 (en) | 2004-04-07 | 2004-04-07 | Mixed flow pump |
DE502004000769T DE502004000769D1 (en) | 2004-04-07 | 2004-04-07 | Screw-centrifugal pump |
DK04405214T DK1584820T3 (en) | 2004-04-07 | 2004-04-07 | screw-centrifugal pump |
JP2007506630A JP5070039B2 (en) | 2004-04-07 | 2004-11-02 | Screw centrifugal pump and method for transporting liquid filled with solid additives using screw centrifugal pump |
PCT/CH2004/000664 WO2005098237A1 (en) | 2004-04-07 | 2004-11-02 | Screw-centrifugal pump |
US10/588,736 US7510368B2 (en) | 2004-04-07 | 2004-11-02 | Screw-centrifugal pump |
CNB2004800426761A CN100419271C (en) | 2004-04-07 | 2004-11-02 | Screw-centrifugal pump |
RU2006139075/06A RU2358159C2 (en) | 2004-04-07 | 2004-11-02 | Screw centrifugal pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04405214A EP1584820B1 (en) | 2004-04-07 | 2004-04-07 | Mixed flow pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1584820A1 true EP1584820A1 (en) | 2005-10-12 |
EP1584820B1 EP1584820B1 (en) | 2006-06-14 |
Family
ID=34896183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04405214A Expired - Lifetime EP1584820B1 (en) | 2004-04-07 | 2004-04-07 | Mixed flow pump |
Country Status (9)
Country | Link |
---|---|
US (1) | US7510368B2 (en) |
EP (1) | EP1584820B1 (en) |
JP (1) | JP5070039B2 (en) |
CN (1) | CN100419271C (en) |
AT (1) | ATE330126T1 (en) |
DE (1) | DE502004000769D1 (en) |
DK (1) | DK1584820T3 (en) |
RU (1) | RU2358159C2 (en) |
WO (1) | WO2005098237A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2169234A2 (en) * | 2007-07-17 | 2010-03-31 | Gerardus Augustinus Maria Manshanden | Sinking pump safe for fish |
EP2908012A3 (en) * | 2014-01-24 | 2015-12-30 | McFinn Technologies | Radial impeller and casing for centrifugal pump |
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JP5404140B2 (en) * | 2009-04-01 | 2014-01-29 | 株式会社東芝 | Template and semiconductor device manufacturing method |
US8550771B2 (en) * | 2009-08-03 | 2013-10-08 | Ebara International Corporation | Inducer for centrifugal pump |
US8506236B2 (en) * | 2009-08-03 | 2013-08-13 | Ebara International Corporation | Counter rotation inducer housing |
US20110027071A1 (en) * | 2009-08-03 | 2011-02-03 | Ebara International Corporation | Multi-stage inducer for centrifugal pumps |
US9631622B2 (en) * | 2009-10-09 | 2017-04-25 | Ebara International Corporation | Inducer for centrifugal pump |
DK2397698T3 (en) * | 2010-06-17 | 2013-01-02 | Frideco Ag | Transporter |
CN102400919A (en) * | 2011-11-18 | 2012-04-04 | 江苏国泉泵业制造有限公司 | Solid-liquid two-phase flow spiral centrifugal pump |
CN102661282A (en) * | 2012-04-16 | 2012-09-12 | 杭州萧山美特轻工机械有限公司 | Open type spiral paper pulp pump |
CN103195755B (en) * | 2013-04-11 | 2015-10-07 | 南京布鲁克林环保设备有限公司 | A kind of single blade screw centrifugal impeller |
EP2894343B2 (en) | 2014-01-12 | 2021-09-01 | Alfa Laval Corporate AB | Self-priming centrifugal pump |
EP2894342B1 (en) * | 2014-01-12 | 2016-12-28 | Alfa Laval Corporate AB | Self-priming centrifugal pump |
KR102231079B1 (en) * | 2014-07-08 | 2021-03-24 | 엘지전자 주식회사 | Drain pump assembly and dryer for clothes having the same |
KR101588137B1 (en) * | 2014-10-24 | 2016-01-22 | 엘지전자 주식회사 | Drain pump assembly and dryer for clothes having the same |
DE102020125805A1 (en) * | 2020-10-02 | 2022-04-07 | Frideco Ag | Pump system and method of operating a pump system |
CN112636910B (en) * | 2020-12-29 | 2021-08-24 | 北京深思数盾科技股份有限公司 | Method, device and system for generating and verifying temporary password |
CN115994394B (en) * | 2023-02-21 | 2023-11-17 | 上海中韩杜科泵业制造有限公司 | Centrifugal pump impeller molding method, device and equipment |
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2004
- 2004-04-07 DE DE502004000769T patent/DE502004000769D1/en not_active Expired - Lifetime
- 2004-04-07 EP EP04405214A patent/EP1584820B1/en not_active Expired - Lifetime
- 2004-04-07 DK DK04405214T patent/DK1584820T3/en active
- 2004-04-07 AT AT04405214T patent/ATE330126T1/en not_active IP Right Cessation
- 2004-11-02 US US10/588,736 patent/US7510368B2/en active Active
- 2004-11-02 CN CNB2004800426761A patent/CN100419271C/en active Active
- 2004-11-02 JP JP2007506630A patent/JP5070039B2/en active Active
- 2004-11-02 WO PCT/CH2004/000664 patent/WO2005098237A1/en active Application Filing
- 2004-11-02 RU RU2006139075/06A patent/RU2358159C2/en not_active IP Right Cessation
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CH394814A (en) * | 1961-08-29 | 1965-06-30 | Staehle Marin | Worm gear pump |
US3340812A (en) * | 1964-07-01 | 1967-09-12 | Schlesiger & Co K G | Centrifugal pump |
EP0233859A1 (en) * | 1986-02-14 | 1987-08-26 | Röhren- und Pumpenwerk Rudolf Bauer Aktiengesellschaft | Self-priming centrifugal pump for handling liquids mixed with a high fiber content |
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EP2169234A2 (en) * | 2007-07-17 | 2010-03-31 | Gerardus Augustinus Maria Manshanden | Sinking pump safe for fish |
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US10094384B2 (en) | 2014-01-24 | 2018-10-09 | Mcfinn Technologies, Llc | Radial impeller and casing for centrifugal pump |
Also Published As
Publication number | Publication date |
---|---|
US7510368B2 (en) | 2009-03-31 |
DE502004000769D1 (en) | 2006-07-27 |
DK1584820T3 (en) | 2006-07-31 |
RU2006139075A (en) | 2008-05-20 |
JP5070039B2 (en) | 2012-11-07 |
JP2007532812A (en) | 2007-11-15 |
CN1926338A (en) | 2007-03-07 |
RU2358159C2 (en) | 2009-06-10 |
EP1584820B1 (en) | 2006-06-14 |
WO2005098237A1 (en) | 2005-10-20 |
ATE330126T1 (en) | 2006-07-15 |
US20070172345A1 (en) | 2007-07-26 |
CN100419271C (en) | 2008-09-17 |
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