EP2235376B1 - Device for pumping gaseous suspensions, particularly fiber suspensions - Google Patents

Device for pumping gaseous suspensions, particularly fiber suspensions Download PDF

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Publication number
EP2235376B1
EP2235376B1 EP08866530.2A EP08866530A EP2235376B1 EP 2235376 B1 EP2235376 B1 EP 2235376B1 EP 08866530 A EP08866530 A EP 08866530A EP 2235376 B1 EP2235376 B1 EP 2235376B1
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EP
European Patent Office
Prior art keywords
rotor
fluidizing
fluidizing rotor
pump
blades
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EP08866530.2A
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German (de)
French (fr)
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EP2235376A1 (en
Inventor
Ludwig Michal
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Andritz AG
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Andritz AG
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Priority to PL08866530T priority Critical patent/PL2235376T3/en
Publication of EP2235376A1 publication Critical patent/EP2235376A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • 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
    • F04D29/2277—Rotors specially for centrifugal pumps with special measures for increasing NPSH or dealing with liquids near boiling-point
    • 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

Definitions

  • the invention relates to a device for pumping gaseous suspensions, in particular pulp suspensions, with a fluidizing rotor with one or more blades and a pump impeller and a discharge nozzle, wherein the fluidizing rotor is arranged in the suction nozzle of the pump and having a hub, wherein the fluidizing rotor at the inlet end in the center is free and the wings act freely without stiffening or connection with each other.
  • Such a device is from the U.S. 4,637,779 known.
  • the US 5 039 320 and US Pat. No. 5,615,997 show fluidizing rotors in which at the outer end for stiffening between the wings a connection is created, which further comprise a bearing bushing. Here, the cross-section is greatly restricted and leads through the fibers very easily to blockages.
  • the US 5 087 171 shows an apparatus with attached rotors that do not reach into the suction nozzle, the hub extends to the end of the suction nozzle. As a result, gas can neither be removed nor extracted from the pump without additional equipment.
  • the present invention seeks to remedy the above disadvantages and thus to save an additional unit while maintaining the stability of the fluidizing rotor.
  • An advantageous development of the invention is characterized in that the fluidization rotor protrudes beyond the suction port of the pump. As a result, the suspension to be pumped can be more easily fed to the suction nozzle.
  • a favorable embodiment of the invention is characterized in that the fluidizing rotor has wide wings, whereby an overlap of Saugstutzenqueritess of more than 40%, advantageously more than 60% is achieved.
  • the fluidization rotor has four wings. Thus, a good power distribution can be achieved.
  • the invention also relates to a rotor as defined in claim 6. Due to the feature that the surface of the vanes at the entrance end is arranged substantially perpendicular to the axis, the entry losses can be greatly reduced.
  • the fluidization rotor has four wings.
  • a good power distribution can be achieved.
  • Fig. 1 shows a pump 1 with fluidizing rotor 2, which has a hub 3.
  • the surfaces of the wings 5 are arranged perpendicular to the axis of the fluidizing rotor 2.
  • the fluidizing rotor 2 is arranged in the suction port 6 of the pump 1, wherein the fluidized suspension, in particular pulp suspension, is conveyed by the impeller to the discharge port 7.
  • the fluidizing rotor 2 extends beyond the suction nozzle 6, for example, into the container from which the suspension is pumped out to be and thereby enables the suspension easier the suction nozzle 6 can be supplied.
  • the hub 3 of the fluidizing rotor 2 is fastened to the pump shaft 9 by means of a screw 8.
  • Fig. 2 shows a Fluidleitersrotor 2 of the invention a pump 1.
  • the Fluidmaschinesrotor 2 is free at the inlet end 4 in the center and the wings 5 freely act without stiffening or connection with each other.
  • This free end has a free length F l , which extends from the end to the hub 3.
  • the ratio of the free length of the fluidizing rotor Fl to the fluidizing rotor diameter Dr is between 0% and 75%, advantageously about 40%.
  • This configuration results in a fluidization rotor 2, which is very stable and can be used for virtually all applications.
  • Fig. 3 is a fluidizing rotor 2 according to the invention shown, in which very well the four wings 5 can be seen, which then converge in the hub 3 in the center and further promote the suspension, in particular pulp suspension in the discharge nozzle of the pump.
  • the wings 5 also have a strength that ensures the necessary stability.
  • the chosen design ensures, above all, that with gaseous suspensions, in particular gaseous fibrous suspensions, the gas is separated from the suspension at the wings and removed, so that a complex and cost-intensive vacuum pump can be dispensed with.

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

Description

Die Erfindung betrifft eine Vorrichtung zum Pumpen von gashaltigen Suspensionen, insbesondere Faserstoffsuspensionen, mit einem Fluidisierungsrotor mit einem oder mehreren Flügeln und einem Pumpenlaufrad und einem Druckstutzen, wobei der Fluidisierungsrotor im Saugstutzen der Pumpe angeordnet ist und eine Nabe aufweist, wobei der Fluidisierungsrotor am Eintrittsende im Zentrum frei ist und die Flügel frei ohne Versteifung oder Verbindung untereinander wirken.The invention relates to a device for pumping gaseous suspensions, in particular pulp suspensions, with a fluidizing rotor with one or more blades and a pump impeller and a discharge nozzle, wherein the fluidizing rotor is arranged in the suction nozzle of the pump and having a hub, wherein the fluidizing rotor at the inlet end in the center is free and the wings act freely without stiffening or connection with each other.

Eine solche Vorrichtung ist aus der US 4 637 779 bekannt.Such a device is from the U.S. 4,637,779 known.

Zum Pumpen von gashaltigen Suspensionen sind bereits eine Reihe von Vorschlägen bekannt. So zeigt die US 4 971 519 (Timperi) eine Pumpe mit einem vorgesetzten Fluidisierungsrotor, wobei hier die Suspension derart fluidisiert wird, dass im Wesentlichen verhindert wird, dass Gas zur Saugöffnung der Pumpe gelangt. Weiters sind Ausführungen gemäß der EP 0474 476 oder EP 0474 478 bekannt, bei denen hinter dem Pumpenlaufrad ein Laufrad einer Vakuumpumpe angeordnet ist, um das Gas abzusaugen. Bei all diesen Varianten, wie auch bei der EP 1 147 316 wird durch die Rotation im Zentrum des Rotors eine Zone erzeugt, in der sich das Gas abscheidet. Das abzuscheidende Gas ist im allgemeinen Luft, kann aber bei speziellen Anwendungen auch ein anderes Gas sein. Alle Ausführungen haben den Nachteil, dass zum Abführen des Gases eine zusätzliche Einrichtung entweder direkt in der Pumpe oder getrennt davon, benötigt wird. Weiters zeigt die DE 699 24 021 T2 einen Fluidisierungsrotor, der im Zentrum frei ist, d.h. keine zentrale Welle besitzt. Auch die WO2000/34663 zeigt eine Zentrifugalpumpe. Hier sind zusätzliche Flügel an zumindest einigen der Laufradflügel angeordnet. Es ist jedoch kein separater Fluidisierungsrotor vorgesehen.For pumping gaseous suspensions, a number of proposals are already known. That's how it shows US 4,971,519 (Timperi) a pump with a superior fluidizing rotor, in which case the suspension is fluidized such that substantially prevents gas from reaching the suction port of the pump. Furthermore, embodiments according to the EP 0474 476 or EP 0474 478 known in which behind the pump impeller, an impeller of a vacuum pump is arranged to suck the gas. In all these variants, as well as in the EP 1 147 316 is generated by the rotation in the center of the rotor, a zone in which the gas is deposited. The gas to be separated is generally air, but may be another gas in specific applications. All versions have the disadvantage that for discharging the gas, an additional device either directly in the pump or separately, is needed. Furthermore, the shows DE 699 24 021 T2 a fluidizing rotor, which is free in the center, that has no central shaft. Also the WO2000 / 34663 shows a centrifugal pump. Here additional wings are arranged on at least some of the impeller blades. However, no separate fluidizing rotor is provided.

Die US 5 039 320 und US 5 615 997 zeigen Fluidisierungsrotoren, bei denen am äußeren Ende zur Versteifung zwischen den Flügeln eine Verbindung geschaffen wird, die des Weiteren eine Lagerbuchse aufweisen. Hier wird der Querschnitt stark eingeengt und führt durch die Fasern sehr leicht zu Verstopfungen. Die US 5 087 171 zeigt einen Apparat mit aufgesetzten Rotoren, die nicht in den Saugstutzen reichen, wobei die Nabe bis an das Ende des Saugstutzens reicht. Dadurch kann weder Gas abgeführt noch ohne zusätzliche Einrichtungen aus der Pumpe abgesaugt werden.The US 5 039 320 and US Pat. No. 5,615,997 show fluidizing rotors in which at the outer end for stiffening between the wings a connection is created, which further comprise a bearing bushing. Here, the cross-section is greatly restricted and leads through the fibers very easily to blockages. The US 5 087 171 shows an apparatus with attached rotors that do not reach into the suction nozzle, the hub extends to the end of the suction nozzle. As a result, gas can neither be removed nor extracted from the pump without additional equipment.

Die vorliegende Erfindung will obige Nachteile beheben und somit ein Zusatzaggregat einsparen bei gleichzeitiger Stabilität des Fluidisierungsrotors.The present invention seeks to remedy the above disadvantages and thus to save an additional unit while maintaining the stability of the fluidizing rotor.

Die Erfindung ist daher dadurch gekennzeichnet, dass das Verhältnis der freien Länge Fl (=Länge ohne Nabe) des Fluidisierungsrotors zum Fluidisierungsrotordurchmesser Dr zwischen 0% und 75%, vorteilhafterweise etwa zwischen 10% und 20% beträgt und die Oberfläche der Flügel am Eintrittsende im Wesentlichen senkrecht zur Achse angeordnet ist.The invention is therefore characterized in that the ratio of the free length Fl (= length without hub) of the fluidization rotor to the fluidization rotor diameter Dr is between 0% and 75%, advantageously between about 10% and 20%, and the surface of the vanes at the entrance end is substantially perpendicular to the axis.

Dadurch wird eine gute Stabilität bei gleichzeitigem guten Wirkungsgrad erreicht, wobei die Oberfläche der Flügel am Eintrittsende nahezu senkrecht zur Achse angeordnet ist. So können die Eintrittsverluste stark reduziert werden.Eine vorteilhafte Weiterbildung der Erfindung ist dadurch gekennzeichnet, dass der Fluidisierungsrotor über den Saugstutzen der Pumpe hinausragt. Dadurch kann die zu pumpende Suspension leichter dem Saugstutzen zugeführt werden.As a result, a good stability is achieved with good efficiency, wherein the surface of the wing is arranged at the inlet end almost perpendicular to the axis. Thus, the entry losses can be greatly reduced. An advantageous development of the invention is characterized in that the fluidization rotor protrudes beyond the suction port of the pump. As a result, the suspension to be pumped can be more easily fed to the suction nozzle.

Eine günstige Ausgestaltung der Erfindung ist dadurch gekennzeichnet, dass der Fluidisierungsrotor breite Flügel aufweist, wodurch eine Überdeckung des Saugstutzenquerschnitts von mehr als 40%, vorteilhaft mehr als 60% erreicht wird. Vorteilhaft hat sich erwiesen, dass der Fluidisierungsrotor vier Flügel aufweist. Damit kann eine gute Kraftverteilung erreicht werden.A favorable embodiment of the invention is characterized in that the fluidizing rotor has wide wings, whereby an overlap of Saugstutzenquerschnitts of more than 40%, advantageously more than 60% is achieved. Advantageously, it has been found that the fluidization rotor has four wings. Thus, a good power distribution can be achieved.

Die Erfindung betrifft auch einen Rotor wie er im Anspruch 6 definiert ist. Durch das Merkmal, dass die Oberfläche der Flügel am Eintrittsende im Wesentlichen senkrecht zur Achse angeordnet ist, können die Eintrittsverluste stark reduziert werden.The invention also relates to a rotor as defined in claim 6. Due to the feature that the surface of the vanes at the entrance end is arranged substantially perpendicular to the axis, the entry losses can be greatly reduced.

Vorteilhaft hat sich erwiesen, dass der Fluidisierungsrotor vier Flügel aufweist. Damit kann eine gute Kraftverteilung erreicht werden.Advantageously, it has been found that the fluidization rotor has four wings. Thus, a good power distribution can be achieved.

Die Erfindung wird nun anhand der Zeichnungen beispielhaft beschrieben, wobei

  • Fig. 1 eine 3D Ansicht eines erfindungsgemäßen Fluidisierungsrotors und Pumpenlaufrades
  • Fig. 2 eine Ansicht einer Vorrichtung gemäß der Erfindung,
  • Fig. 3 eine Draufsicht auf den Fluidisierungsrotor darstellt.
The invention will now be described by way of example with reference to the drawings, in which:
  • Fig. 1 a 3D view of a fluidization rotor and pump impeller according to the invention
  • Fig. 2 a view of a device according to the invention,
  • Fig. 3 a top view of the Fluidisierungsrotor represents.

Fig. 1 zeigt eine Pumpe 1 mit Fluidisierungsrotor 2, der eine Nabe 3 aufweist. Am Eintrittsende 4 sind die Oberflächen der Flügel 5 senkrecht zur Achse des Fluidisierungsrotors 2 angeordnet. Dadurch werden die hydraulischen Eintrittsverluste minimiert, wodurch sich der Wirkungsgrad der Pumpe erhöht. Der Fluidisierungsrotor 2 ist im Saugstutzen 6 der Pumpe 1 angeordnet, wobei die fluidisierte Suspension, insbesondere Faserstoffsuspension, durch das Laufrad zum Druckstutzen 7 gefördert wird. Der Fluidisierungsrotor 2 reicht dabei über den Saugstutzen 6 hinaus z.B. in den Behälter, aus dem die Suspension abgepumpt werden soll und ermöglicht dadurch, dass die Suspension leichter dem Saugstutzen 6 zugeführt werden kann. Die Nabe 3 des Fluidisierungsrotors 2 ist mittels einer Schraube 8 an der Pumpenwelle 9 befestigt. Fig. 1 shows a pump 1 with fluidizing rotor 2, which has a hub 3. At the inlet end 4, the surfaces of the wings 5 are arranged perpendicular to the axis of the fluidizing rotor 2. As a result, the hydraulic entry losses are minimized, thereby increasing the efficiency of the pump. The fluidizing rotor 2 is arranged in the suction port 6 of the pump 1, wherein the fluidized suspension, in particular pulp suspension, is conveyed by the impeller to the discharge port 7. The fluidizing rotor 2 extends beyond the suction nozzle 6, for example, into the container from which the suspension is pumped out to be and thereby enables the suspension easier the suction nozzle 6 can be supplied. The hub 3 of the fluidizing rotor 2 is fastened to the pump shaft 9 by means of a screw 8.

Fig. 2 zeigt einen erfindungsgemäßen Fluidisierungsrotor 2 einer Pumpe 1. Hier ist besonders gut erkennbar, dass der Fluidisierungsrotor 2 am Eintrittsende 4 im Zentrum frei ist und die Flügel 5 frei ohne Versteifung oder Verbindung untereinander wirken. Dieses freie Ende weist eine freie Länge Fl auf, die vom Ende bis zur Nabe 3 reicht. Es hat sich als besonders vorteilhaft erwiesen, wenn das Verhältnis der freien Länge des Fluidisierungsrotors Fl zum Fluidisierungsrotordurchmesser Dr zwischen 0% und 75%, vorteilhafterweise etwa 40% beträgt. Durch diese Ausgestaltung ergibt sich ein Fluidisierungsrotor 2, der sehr stabil ist und für praktisch alle Einsatzfälle verwendet werden kann. Fig. 2 shows a Fluidisierungsrotor 2 of the invention a pump 1. Here is particularly clearly seen that the Fluidisierungsrotor 2 is free at the inlet end 4 in the center and the wings 5 freely act without stiffening or connection with each other. This free end has a free length F l , which extends from the end to the hub 3. It has proved to be particularly advantageous if the ratio of the free length of the fluidizing rotor Fl to the fluidizing rotor diameter Dr is between 0% and 75%, advantageously about 40%. This configuration results in a fluidization rotor 2, which is very stable and can be used for virtually all applications.

In Fig. 3 ist ein erfindungsgemäßer Fluidisierungsrotor 2 dargestellt, bei dem sehr gut die vier Flügel 5 erkennbar sind, die dann in der Nabe 3 im Zentrum zusammenlaufen und in weiterer Folge die Suspension, insbesondere Faserstoffsuspension in den Druckstutzen der Pumpe fördern. Die Flügel 5 weisen dabei auch eine Stärke auf, die die nötige Stabilität gewährleistet.In Fig. 3 is a fluidizing rotor 2 according to the invention shown, in which very well the four wings 5 can be seen, which then converge in the hub 3 in the center and further promote the suspension, in particular pulp suspension in the discharge nozzle of the pump. The wings 5 also have a strength that ensures the necessary stability.

Durch die gewählte Ausführung wird vor allem gewährleistet, dass bei gashaltigen Suspensionen, insbesondere gashaltigen Faserstoffsuspensionen das Gas an den Flügeln aus der Suspension abgeschieden und abgeführt wird, wodurch eine aufwändige und kostenintensive Vakuumpumpe entfallen kann.The chosen design ensures, above all, that with gaseous suspensions, in particular gaseous fibrous suspensions, the gas is separated from the suspension at the wings and removed, so that a complex and cost-intensive vacuum pump can be dispensed with.

Die Erfindung ist nicht durch die Beispiele beschränkt. Es können innerhalb des Schutzbereiches der folgenden Ansprüche auch z.B. andere Abmessungen gewählt werden, die stark abhängig von der Größe und der Förderleistung der Pumpe sind. Wesentlich sind jedoch die grundsätzliche Ausbildung des Fluidisierungsrotors und die Anordnung im Pumpengehäuse/Saugstutzen, wodurch der Fluidisierungsrotor das abgeschiedene Gas aus der Pumpe hinauspresst und keine zusätzlichen Einrichtungen zu einer Vakuumerzeugung mehr nötig sind.The invention is not limited by the examples. Within the scope of the following claims, it is also possible to use e.g. other dimensions are chosen, which are highly dependent on the size and the capacity of the pump. Essential, however, are the basic design of the fluidization rotor and the arrangement in the pump housing / suction nozzle, whereby the fluidizing rotor presses the separated gas out of the pump and no additional facilities for vacuum generation are more necessary.

Claims (8)

  1. Device for pumping gaseous suspensions, particularly pulp suspensions, which has a fluidizing rotor (2) with one or several blades (5), a pump impeller, and a delivery branch (7), where the fluidizing rotor (2) is mounted in the suction branch (6) of the pump (1) and has a hub (3), and where the fluidizing rotor (2) is free in the center at the inlet end (4) and the blades (5) interact freely without any stiffening or bonding, characterized by the ratio of the free length Fl of the fluidizing rotor (2) to the diameter of the fluidizing rotor Dr ranging between 0% and 75%, where the free length (Fl) of the fluidizing rotor (2) extends from the inlet end (4) to the hub (3), and where the surface of the blades (5) is arranged largely perpendicular to the axis at the inlet end (4).
  2. Device according to Claim 1, characterized by the ratio of the free length (Fl) of the fluidizing rotor (2) to the diameter of the fluidizing rotor (Dr) ranging between 10% and 20%.
  3. Device according to one of Claims 1 or 2, characterized by the fluidizing rotor (2) extending beyond the suction branch (6) of the pump (1).
  4. Device according to one of Claims 1 to 3, characterized by the fluidizing rotor (2) having broad blades (5), thus achieving more than 40% coverage of the suction branch cross-section, advantageously more than 60%.
  5. Device according to one of Claims 1 to 4, characterized by the fluidizing rotor (2) having four blades (5).
  6. Rotor for a pump for pumping gaseous suspensions, particularly pulp suspensions, where the fluidizing rotor (2) is free in the center at the inlet end (4) and the blades (5) interact freely without any stiffening or bonding, characterized by the ratio of the free length (Fl) of the fluidizing rotor (2) to the diameter of the fluidizing rotor (Dr) ranging between 0% and 75%, where the free length (Fl) of the fluidizing rotor (2) extends from the inlet end (4) to the hub (3) and where the surface of the blades (5) is arranged largely perpendicular to the axis at the inlet end (4).
  7. Rotor according to Claim 6, characterized by the ratio of the free length (Fl) of the fluidizing rotor (2) to the diameter of the fluidizing rotor (Dr) ranging between 10% and 20%.
  8. Rotor according to one of Claims 6 to 7, characterized by the fluidizing rotor (2) having four blades (5).
EP08866530.2A 2008-01-03 2008-12-29 Device for pumping gaseous suspensions, particularly fiber suspensions Active EP2235376B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08866530T PL2235376T3 (en) 2008-01-03 2008-12-29 Device for pumping gaseous suspensions, particularly fiber suspensions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0000608A AT506202B1 (en) 2008-01-03 2008-01-03 DEVICE FOR PUMPING GAS-CONTAINING SUSPENSIONS, ESPECIALLY FIBER-SUSPENSIONS
PCT/AT2008/000476 WO2009082775A1 (en) 2008-01-03 2008-12-29 Device for pumping gaseous suspensions, particularly fiber suspensions

Publications (2)

Publication Number Publication Date
EP2235376A1 EP2235376A1 (en) 2010-10-06
EP2235376B1 true EP2235376B1 (en) 2017-11-22

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ID=40456873

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EP08866530.2A Active EP2235376B1 (en) 2008-01-03 2008-12-29 Device for pumping gaseous suspensions, particularly fiber suspensions

Country Status (9)

Country Link
EP (1) EP2235376B1 (en)
CN (1) CN101910642B (en)
AT (1) AT506202B1 (en)
BR (1) BRPI0821822B1 (en)
ES (1) ES2657215T3 (en)
PL (1) PL2235376T3 (en)
PT (1) PT2235376T (en)
RU (1) RU2530979C2 (en)
WO (1) WO2009082775A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10087946B2 (en) * 2016-02-09 2018-10-02 Brunswick Corporation Centrifugal pumps having anti-air-locking features

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4637779A (en) * 1985-05-17 1987-01-20 Kamyr, Inc. Two stage medium consistency pulp pumping
SE467466B (en) * 1989-03-29 1992-07-20 Kamyr Ab DEVICE FOR FLUIDIZATION, GAS SEPARATION AND PUMPING OF A SUSPENSION OF FIBER-containing CELLULO MATERIAL, AND ITS APPLICATION
US5087171A (en) * 1989-07-25 1992-02-11 Goulds Pumps, Incorporated Paper pulp centrifugal pump with gas separation
SE504976C2 (en) * 1995-09-07 1997-06-02 Kvaerner Pulping Tech Fiber pulp suspension pump with built-in vacuum pump
SE510031C2 (en) * 1998-06-17 1999-04-12 Sunds Defibrator Ind Ab Centrifugal pump for pumping a pulp suspension
SE512984C2 (en) * 1998-10-13 2000-06-12 Valmet Fibertech Ab Pulp Pump
AUPP750898A0 (en) * 1998-12-04 1999-01-07 Warman International Limited Impeller relating to froth pumps
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
CN2844522Y (en) * 2005-01-31 2006-12-06 江苏飞跃机泵制造有限公司 Slag slurry pump

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Publication number Publication date
BRPI0821822A2 (en) 2019-09-03
RU2010130431A (en) 2012-02-10
CN101910642B (en) 2014-05-14
EP2235376A1 (en) 2010-10-06
WO2009082775A1 (en) 2009-07-09
ES2657215T3 (en) 2018-03-02
PL2235376T3 (en) 2018-04-30
RU2530979C2 (en) 2014-10-20
PT2235376T (en) 2018-01-30
BRPI0821822B1 (en) 2020-05-12
CN101910642A (en) 2010-12-08
AT506202B1 (en) 2010-05-15
AT506202A1 (en) 2009-07-15

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