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EP2613871B1 - Stirrer - Google Patents

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Publication number
EP2613871B1
EP2613871B1 EP11757251.1A EP11757251A EP2613871B1 EP 2613871 B1 EP2613871 B1 EP 2613871B1 EP 11757251 A EP11757251 A EP 11757251A EP 2613871 B1 EP2613871 B1 EP 2613871B1
Authority
EP
European Patent Office
Prior art keywords
hollow shaft
rotor
rotors
stirrer
motor
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.)
Active
Application number
EP11757251.1A
Other languages
German (de)
French (fr)
Other versions
EP2613871A1 (en
Inventor
Jochen Friedrich Knauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ecolab USA Inc
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Ecolab USA Inc
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Filing date
Publication date
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Priority to PL11757251T priority Critical patent/PL2613871T3/en
Publication of EP2613871A1 publication Critical patent/EP2613871A1/en
Application granted granted Critical
Publication of EP2613871B1 publication Critical patent/EP2613871B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/91—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
    • B01F23/23364—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced between the stirrer elements
    • B01F23/233641—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced between the stirrer elements at the stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis
    • B01F27/11253—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis the blades extending oblique to the stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/113—Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/2122—Hollow shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/81—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/005—Mixing or agitating manure, dung
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/305—Treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23761—Aerating, i.e. introducing oxygen containing gas in liquids

Definitions

  • the present invention relates to a stirrer with a motor, a hollow shaft drivable via the motor, which is provided with at least one aggregate outlet opening through which an additive conducted through the hollow shaft can be discharged and a rotor arranged on the hollow shaft and having rotor blades.
  • Such agitators are known in the prior art in a variety of configurations and are used in various technical fields.
  • the DE-A-25 11 717 a stirrer with a motor-driven hollow shaft and a rotor attached to this.
  • the rotor is provided with holes or aggregate outlet openings, via which an aggregate passed through the hollow shaft in the form of air can be introduced into a liquid to be treated in order to aerate it, as required, for example, in the spreading of biological manure.
  • the DE-U-93 06 907 describes a slurry aerator with a driven via a hollow shaft rotor, in which sucked by the hollow shaft alone under the effect of the negative pressure generated by the rotor additives in the form of air or chemicals and mixed via a corresponding, provided in the lower region of the hollow shaft aggregate outlet opening.
  • both the mixing of the medium to be treated and the supply of the additive to be mixed can be improved.
  • US 3,400,918 discloses a Abiganbel explanationer with a hollow shaft, on which two propellers and two of the hollow shaft radially outwardly standing intake pipes are arranged. Upon rotation of the hollow shaft, a negative pressure is created at the intake pipes and air bubbles are introduced through the hollow shaft through the intake pipes into the wastewater.
  • the propellers are there are identically designed and move the flow of sewage axially in the same direction past the intake pipes and thus promote the air in the wastewater. The lower propeller breaks up the air bubbles into smaller air bubbles.
  • the US 2,928,661 discloses a similar as in US 3,400,918 trained system for aerating wastewater with two co-rotating rotors and intermediate intake pipes, which are each arranged on a hollow shaft.
  • the SU 1,454,367 A1 discloses a whipping machine with a hollow shaft on which two rotors are arranged and a rotor therebetween, wherein directly adjacent to the rotors each air outlet holes are provided, can enter through the air from the hollow shaft in the whipped cream and improves their quality.
  • the two outer rotors have 90 ° staggered rotor blades. A flow of the medium through the rotor blades is technically irrelevant in this application, as it is all about bringing the previously liquid whipped cream in the beaten stiffer condition.
  • the present invention provides a stirrer according to claim 1, which is characterized in that at the hollow shaft spaced from the first rotor, a second rotor blades exhibiting rotor is provided, and that the at least one aggregate discharge opening is provided between the two rotors.
  • the rotor blades of the first rotor and the rotor blades of the second rotor are arranged in opposite directions or, in other words, inclined in opposite directions, so that a negative pressure and a centrifugal force are generated during operation in the gap defined between the rotors. In this way, a very simple construction of the agitator is achieved.
  • the flow directions of the flows generated by the rotors are directed opposite to each other.
  • the suction sides of the rotors are, in particular in the hollow shaft axial direction, provided on sides facing away from each other, while the pressure sides of the rotors face each other and lie between the rotors.
  • the medium to be treated is automatically and continuously conveyed from the outside into the intermediate space, whereby a very good mixing is achieved.
  • the additive is sucked continuously and very effectively from the at least one additive outlet opening, thanks to the prevailing vacuum in the intermediate space and the centrifugal force generated, resulting in a very good and constant admixture of the additive. Overall, therefore, a good mixing of the medium to be treated and a proper introduction of the aggregate can be ensured.
  • the rotors are rotatably connected to the hollow shaft.
  • the rotors are arranged in the region of the free end of the hollow shaft, so that they can be guided very close to the bottom of that container in which the medium to be treated is contained.
  • the hollow shaft and the rotor blades of the first rotor and the second rotor are made of plastic. Accordingly, very aggressive additives can be introduced into media to be treated with the agitator according to the invention, such as iron chloride (FeCl 3 ), which is used in wastewater treatment, for example, for phosphate elimination.
  • FeCl 3 iron chloride
  • the at least one additive outlet opening is preferably an elongated recess which extends in particular in the direction of the hollow shaft axis.
  • an elongated recess can be made a very uniform delivery of the additive.
  • a plurality of additive outlet openings are provided, which are arranged distributed uniformly along the circumference of the hollow shaft.
  • the engine may in particular be an electric motor.
  • the motor can drive the hollow shaft directly.
  • a corresponding gear can be interposed, such as a bevel gear or the like.
  • the hollow shaft and the motor are arranged coaxially according to an embodiment of the present invention, wherein a classicstoffzucreamtechnisch is connected in particular to the hollow shaft opposite side of the motor. In this way, a very simple construction of the agitator according to the invention.
  • the motor can be mounted on a mounting plate so that the agitator can be installed without any problems.
  • FIGS. 1 to 3 show a stirrer 10 according to an embodiment of the present invention.
  • the agitator 10 comprises an electric motor 12 fixed to a mounting plate 11 and a hollow shaft 14 drivable via the motor 12.
  • the hollow shaft 14 is entirely made of plastic or of metallic material, eg a steel, with a coating which is resistant to the aggregate, in particular a plastic coating.
  • the hollow shaft 14 is provided with a plurality of aggregate outlet openings 16.
  • a guided through the hollow shaft 14 aggregate are discharged, which is connected via a guided inside the hollow shaft 14 non-co-rotating feed tube 40 whose upper end as Zuglerstoffzu slaughterhousetechnisch 18 upwardly protruding on the hollow shaft 14 opposite side of the motor 12, is supplied.
  • the feed pipe 40 opens at its end at the level of the aggregate outlet openings 16.
  • the aggregate outlet openings 16 are axial elongated recesses which are arranged distributed uniformly along the circumference of the hollow shaft 14 and each extending in the direction of the hollow shaft axis 20.
  • the agitator 10 comprises a first rotor 22, which has four rotor blades 24, and a second rotor 26, which is provided with four rotor blades 28.
  • the plastic rotors 22 and 26 are rotatably connected to the hollow shaft 14 and spaced from each other so that they define between them a gap 30 in which the aggregate outlet openings 16 are positioned.
  • the rotor blades 24 of the first rotor 22 and the rotor blades 28 of the second rotor 26 are arranged in opposite directions, that is inclined in opposite directions, so that they produce substantially opposite currents during operation.
  • the sucked into the space 30 wastewater is then pressed radially outward from the gap 30, so that in the space 30 in addition a centrifugal force is generated. In this way, on the one hand, a very good mixing of the wastewater 32 to be treated is achieved.
  • the supplied via the hollow shaft 14 aggregate is continuously sucked from the aggregate outlet openings 16, as indicated by the arrows 38, whereby a uniform admixture of the aggregate is ensured.
  • the additive can be, for example, iron chloride (FeCl 3 ), which is used to eliminate phosphate in the wastewater.
  • the above-described construction of the agitator 10 is particularly advantageous in that a very good mixing of the medium to be treated and a proper introduction of the additive can be ensured with a simple structure.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Description

Die vorliegende Erfindung betrifft ein Rührwerk mit einem Motor, einer über den Motor antreibbaren Hohlwelle, die mit wenigstens einer Zuschlagstoffaustrittsöffnung versehen ist, durch die ein durch die Hohlwelle geleiteter Zuschlagstoff abgegeben werden kann und einem an der Hohlwelle angeordneten und Rotorblätter aufweisenden Rotor.The present invention relates to a stirrer with a motor, a hollow shaft drivable via the motor, which is provided with at least one aggregate outlet opening through which an additive conducted through the hollow shaft can be discharged and a rotor arranged on the hollow shaft and having rotor blades.

Derartige Rührwerke sind im Stand der Technik in unterschiedlichsten Ausgestaltungen bekannt und werden auf verschiedenen technischen Gebieten eingesetzt. Beispielsweise offenbart die DE-A-25 11 717 ein Rührwerk mit einer motorbetriebenen Hohlwelle und einem an dieser befestigten Rotor. Der Rotor ist mit Löchern bzw. Zuschlagstoffaustrittsöffnungen versehen, über die ein durch die Hohlwelle geleiteter Zuschlagstoff in Form von Luft in eine aufzubereitende Flüssigkeit eingebracht werden kann, um diese zu belüften, wie es zum Beispiel bei der Aufbreitung von biologischer Jauche erforderlich ist. Die DE-U-93 06 907 beschreibt ein Güllebelüftungsgerät mit einem über eine Hohlwelle angetriebenen Rotor, bei dem durch die Hohlwelle allein unter der Wirkung des vom dem Rotor erzeugten Unterdrucks Zuschlagstoffe in Form von Luft oder Chemikalien angesaugt und über eine entsprechende, im unteren Bereich der Hohlwelle vorgesehene Zuschlagstoffaustrittsöffnung eingemischt werden können. Bei den bekannten Rührwerken sind jedoch sowohl die Durchmischung des zu behandelnden Mediums als auch die Zufuhr des beizumischenden Zuschlagstoffes verbesserungsfähig.Such agitators are known in the prior art in a variety of configurations and are used in various technical fields. For example, the DE-A-25 11 717 a stirrer with a motor-driven hollow shaft and a rotor attached to this. The rotor is provided with holes or aggregate outlet openings, via which an aggregate passed through the hollow shaft in the form of air can be introduced into a liquid to be treated in order to aerate it, as required, for example, in the spreading of biological manure. The DE-U-93 06 907 describes a slurry aerator with a driven via a hollow shaft rotor, in which sucked by the hollow shaft alone under the effect of the negative pressure generated by the rotor additives in the form of air or chemicals and mixed via a corresponding, provided in the lower region of the hollow shaft aggregate outlet opening. In the known agitators, however, both the mixing of the medium to be treated and the supply of the additive to be mixed can be improved.

US 3,400,918 offenbart einen Abwasserbelüfter mit einer Hohlwelle, an der zwei Propeller und zwei von der Hohlwelle radial nach außen stehende Ansaugrohre angeordnet sind. Bei Drehung der Hohlwelle entsteht an den Ansaugrohren ein Unterdruck und es werden durch die Hohlwelle Luftblasen durch die Ansaugrohre in das Abwasser eingebracht. Die Propeller sind dabei identisch ausgebildet und bewegen die Strömung des Abwassers axial in gleicher Richtung an den Ansaugrohren vorbei und fördern somit die Luft in das Abwasser. Der untere Propeller bricht dabei die Luftblasen in kleinere Luftblasen auf. US 3,400,918 discloses a Abwasserbelüfter with a hollow shaft, on which two propellers and two of the hollow shaft radially outwardly standing intake pipes are arranged. Upon rotation of the hollow shaft, a negative pressure is created at the intake pipes and air bubbles are introduced through the hollow shaft through the intake pipes into the wastewater. The propellers are there are identically designed and move the flow of sewage axially in the same direction past the intake pipes and thus promote the air in the wastewater. The lower propeller breaks up the air bubbles into smaller air bubbles.

Die US 2,928,661 offenbart ein ähnlich wie in US 3,400,918 ausgebildetes System zum Belüften von Abwasser mit zwei gleichlaufenden Rotoren und dazwischen liegenden Ansaugrohren, die jeweils an einer Hohlwelle angeordnet sind.The US 2,928,661 discloses a similar as in US 3,400,918 trained system for aerating wastewater with two co-rotating rotors and intermediate intake pipes, which are each arranged on a hollow shaft.

Die SU 1,454,367 A1 offenbart eine Maschine zum Schlagen von Schlagsahne mit einer Hohlwelle an der zwei Rotoren angeordnet sind und einem dazwischen liegenden Rotor, wobei unmittelbar benachbart zu den Rotoren jeweils Luftaustrittslöcher vorgesehen sind, durch die Luft aus der Hohlwelle in die Schlagsahne eintreten kann und deren Qualität verbessert. Die beiden äußern Rotoren haben um 90° zueinander versetzte Rotorblätter. Eine Strömung des Mediums durch die Rotorblätter ist in dieser Anwendung technisch irrelevant, da es vor allem darum geht, die vorher flüssige Schlagsahne in den geschlagenen steiferen Zustand zu bringen.The SU 1,454,367 A1 discloses a whipping machine with a hollow shaft on which two rotors are arranged and a rotor therebetween, wherein directly adjacent to the rotors each air outlet holes are provided, can enter through the air from the hollow shaft in the whipped cream and improves their quality. The two outer rotors have 90 ° staggered rotor blades. A flow of the medium through the rotor blades is technically irrelevant in this application, as it is all about bringing the previously liquid whipped cream in the beaten stiffer condition.

Ausgehend von diesem Stand der Technik ist es eine Aufgabe der vorliegenden Erfindung, ein Rührwerk der eingangs genannten Art zu schaffen, das einen einfachen Aufbau aufweist und eine sehr gute Durchmischung des zu behandelnden Mediums sowie eine ordnungsgemäße Zufuhr des beizumischenden Zuschlagstoffes gewährleistet.Based on this prior art, it is an object of the present invention to provide a stirrer of the type mentioned, which has a simple structure and ensures a very good mixing of the medium to be treated and a proper supply of the admixed additive.

Zur Lösung dieser Aufgabe schafft die vorliegende Erfindung ein Rührwerk gemäß Anspruch 1, das dadurch gekennzeichnet ist, dass an der Hohlwelle beabstandet vom ersten Rotor ein zweiter Rotorblätter aufweisender Rotor vorgesehen ist, und dass die wenigstens eine Zuschlagstoffaustrittsöffnung zwischen den beiden Rotoren vorgesehen ist. Die Rotorblätter des ersten Rotors und die Rotorblätter des zweiten Rotors sind gegenläufig angeordnet oder, mit anderen Worten, in entgegen gesetzten Richtungen geneigt, so dass während des Betriebs in dem zwischen den Rotoren definierten Zwischenraum ein Unterdruck und eine Zentrifugalkraft erzeugt werden. Auf diese Weise wird ein sehr einfacher Aufbau des Rührwerks erzielt. Die Strömungsrichtungen der durch die Rotoren erzeugten Strömungen sind entgegengesetzt zueinander gerichtet. Die Saugseiten der Rotoren sind, insbesondere in zur Hohlwelle axialer Richtung, an voneinander abgewandten Seiten vorgesehen, während die Druckseiten der Rotoren einander zugewandt sind und zwischen den Rotoren liegen.To achieve this object, the present invention provides a stirrer according to claim 1, which is characterized in that at the hollow shaft spaced from the first rotor, a second rotor blades exhibiting rotor is provided, and that the at least one aggregate discharge opening is provided between the two rotors. The rotor blades of the first rotor and the rotor blades of the second rotor are arranged in opposite directions or, in other words, inclined in opposite directions, so that a negative pressure and a centrifugal force are generated during operation in the gap defined between the rotors. In this way, a very simple construction of the agitator is achieved. The flow directions of the flows generated by the rotors are directed opposite to each other. The suction sides of the rotors are, in particular in the hollow shaft axial direction, provided on sides facing away from each other, while the pressure sides of the rotors face each other and lie between the rotors.

Aufgrund der Tatsache, dass in dem zwischen den Rotoren definierten Zwischenraum während des Betriebs des Rührwerks ein (statischer) Unterdruck erzeugt wird, wird das zu behandelnde Medium automatisch und kontinuierlich von außen in den Zwischenraum gefördert, wodurch eine sehr gute Durchmischung erzielt wird. Darüber hinaus wird der Zuschlagstoff dank des in dem Zwischenraum vorherrschenden Unterdrucks und der erzeugten Zentrifugalkraft kontinuierlich und sehr effektiv aus der wenigstens einen Zuschlagstoffaustrittsöffnung gesogen, was zu einer sehr guten und konstanten Beimengung des Zuschlagstoffes führt. Insgesamt können also eine gute Durchmischung des zu behandelnden Mediums sowie eine ordnungsgemäße Einbringung des Zuschlagstoffes gewährleistet werden.Due to the fact that a (static) negative pressure is generated in the gap defined between the rotors during the operation of the agitator, the medium to be treated is automatically and continuously conveyed from the outside into the intermediate space, whereby a very good mixing is achieved. In addition, the additive is sucked continuously and very effectively from the at least one additive outlet opening, thanks to the prevailing vacuum in the intermediate space and the centrifugal force generated, resulting in a very good and constant admixture of the additive. Overall, therefore, a good mixing of the medium to be treated and a proper introduction of the aggregate can be ensured.

Gemäß einer Ausgestaltung der vorliegenden Erfindung sind die Rotoren drehfest mit der Hohlwelle verbunden.According to one embodiment of the present invention, the rotors are rotatably connected to the hollow shaft.

Bevorzugt sind die Rotoren im Bereich des freien Endes der Hohlwelle angeordnet, so dass diese sehr nahe an dem Boden desjenigen Behälters geführt werden können, in dem das zu behandelnde Medium enthalten ist.Preferably, the rotors are arranged in the region of the free end of the hollow shaft, so that they can be guided very close to the bottom of that container in which the medium to be treated is contained.

Gemäß einer Ausgestaltung der vorliegenden Erfindung sind die Hohlwelle sowie die Rotorblätter des ersten Rotors und des zweiten Rotors aus Kunststoff hergestellt. Entsprechend können mit dem erfindungsgemäßen Rührwerk auch sehr aggressive Zuschlagstoffe in zu behandelnde Medien eingebracht werden, wie beispielsweise Eisendreichlorid (FeCl3), das bei der Abwasserbehandlung beispielsweise zur Phosphatelimination eingesetzt wird.According to one embodiment of the present invention, the hollow shaft and the rotor blades of the first rotor and the second rotor are made of plastic. Accordingly, very aggressive additives can be introduced into media to be treated with the agitator according to the invention, such as iron chloride (FeCl 3 ), which is used in wastewater treatment, for example, for phosphate elimination.

Bevorzugt handelt es sich bei der wenigstens einen Zuschlagstoffaustrittsöffnung um eine längliche Aussparung, die sich insbesondere in Richtung der Hohlwellenachse erstreckt. Durch eine solche längliche Aussparung kann eine sehr gleichmäßige Abgabe des Zusatzstoffes erfolgen.The at least one additive outlet opening is preferably an elongated recess which extends in particular in the direction of the hollow shaft axis. By such an elongated recess can be made a very uniform delivery of the additive.

Vorteilhaft sind mehrere Zuschlagstoffaustrittsöffnungen vorgesehen, die entlang des Umfangs der Hohlwelle gleichmäßig verteilt angeordnet sind.Advantageously, a plurality of additive outlet openings are provided, which are arranged distributed uniformly along the circumference of the hollow shaft.

Bei dem Motor kann es sich insbesondere um einen Elektromotor handeln. Der Motor kann die Hohlwelle direkt antreiben. Alternativ kann natürlich auch ein entsprechendes Getriebe zwischengeschaltet sein, wie beispielsweise ein Kegelradgetriebe oder dergleichen.The engine may in particular be an electric motor. The motor can drive the hollow shaft directly. Alternatively, of course, a corresponding gear can be interposed, such as a bevel gear or the like.

Die Hohlwelle und der Motor sind gemäß einer Ausgestaltung der vorliegenden Erfindung koaxial angeordnet, wobei eine Zuschlagstoffzuführleitung insbesondere an der der Hohlwelle gegenüber liegenden Seite des Motors angeschlossen ist. Auf diese Weise ergibt sich ein sehr einfacher Aufbau des erfindungsgemäßen Rührwerkes.The hollow shaft and the motor are arranged coaxially according to an embodiment of the present invention, wherein a Zusatzstoffzuführleitung is connected in particular to the hollow shaft opposite side of the motor. In this way, a very simple construction of the agitator according to the invention.

Der Motor kann an einer Montageplatte befestigt sein, so dass sich das Rührwerk ohne Probleme installieren lässt.The motor can be mounted on a mounting plate so that the agitator can be installed without any problems.

Weitere Merkmale und Vorteile der vorliegenden Erfindung werden anhand der beiliegenden Beschreibung einer bevorzugten Ausführungsform eines erfindungsgemäßen Rührwerkes unter Bezugnahme auf die beiliegende Zeichnung deutlich. Darin ist

Figur 1
eine perspektivische Ansicht eines Rührwerks gemäß einer Ausführungsform der vorliegenden Erfindung;
Figur 2
eine Seitenansicht des in Figur 1 dargestellten Rührwerks und
Figur 3
eine Seitenansicht des in den Figuren 1 und 2 dargestellten Rührwerks, das in eine Abwasserrinne eingetaucht ist.
Further features and advantages of the present invention will become apparent from the accompanying description of a preferred embodiment of an agitator according to the invention with reference to the accompanying drawings. That's it
FIG. 1
a perspective view of an agitator according to an embodiment of the present invention;
FIG. 2
a side view of the in FIG. 1 shown agitator and
FIG. 3
a side view of the in the FIGS. 1 and 2 shown agitator, which is immersed in a sewer.

Die Figuren 1 bis 3 zeigen ein Rührwerk 10 gemäß einer Ausführungsform der vorliegenden Erfindung. Das Rührwerk 10 umfasst einen an einer Montageplatte 11 befestigten Elektromotor 12 und eine über den Motor 12 antreibbare Hohlwelle 14. Die Hohlwelle 14 ist ganz aus Kunststoff oder aus metallischem Werkstoff z.B. einem Stahl, mit einer gegenüber dem Zuschlagstoff beständigen Beschichtung, insbesondere Kunststoffbeschichtung, gebildet. Im Bereich ihres freien Endes ist die Hohlwelle 14 mit einer Vielzahl von Zuschlagstoffaustrittsöffnungen 16 versehen. Über diese Zuschlagstoffaustrittsöffnungen 16 kann ein durch die Hohlwelle 14 geleiteter Zuschlagstoff abgegeben werden, welcher über ein innerhalb der Hohlwelle 14 geführtes nicht mitdrehendes Zuführrohr 40, dessen oberes Ende als Zuschlagstoffzuführleitung 18 nach oben herausragt an der der Hohlwelle 14 gegenüberliegenden Seite des Motors 12 angeschlossen ist, zugeführt wird. Das Zuführrohr 40 mündet mit seinem Ende auf Höhe der Zuschlagsaustrittsöffnungen 16. Bei den Zuschlagstoffaustrittsöffnungen 16 handelt es sich um axiale längliche Aussparungen, die entlang des Umfangs der Hohlwelle 14 gleichmäßig verteilt angeordnet sind und sich jeweils in Richtung der Hohlwellenachse 20 erstrecken.The FIGS. 1 to 3 show a stirrer 10 according to an embodiment of the present invention. The agitator 10 comprises an electric motor 12 fixed to a mounting plate 11 and a hollow shaft 14 drivable via the motor 12. The hollow shaft 14 is entirely made of plastic or of metallic material, eg a steel, with a coating which is resistant to the aggregate, in particular a plastic coating. In the region of its free end, the hollow shaft 14 is provided with a plurality of aggregate outlet openings 16. About this aggregate outlet openings 16, a guided through the hollow shaft 14 aggregate are discharged, which is connected via a guided inside the hollow shaft 14 non-co-rotating feed tube 40 whose upper end as Zuschlagstoffzuführleitung 18 upwardly protruding on the hollow shaft 14 opposite side of the motor 12, is supplied. The feed pipe 40 opens at its end at the level of the aggregate outlet openings 16. The aggregate outlet openings 16 are axial elongated recesses which are arranged distributed uniformly along the circumference of the hollow shaft 14 and each extending in the direction of the hollow shaft axis 20.

Ferner umfasst das Rührwerk 10 einen ersten Rotor 22, der vier Rotorblätter 24 aufweist, sowie einen zweiten Rotor 26, der mit vier Rotorblättern 28 versehen ist. Die aus Kunststoff hergestellten Rotoren 22 und 26 sind drehfest mit der Hohlwelle 14 verbunden und voneinander beabstandet angeordnet, so dass sie zwischen sich einen Zwischenraum 30 definieren, in dem die Zuschlagstoffaustrittsöffnungen 16 positioniert sind. Die Rotorblätter 24 des ersten Rotors 22 und die Rotorblätter 28 des zweiten Rotors 26 sind gegenläufig angeordnet, also in entgegengesetzten Richtungen geneigt, so dass diese während des Betriebs im Wesentlichen entgegengesetzte Strömungen erzeugen.Furthermore, the agitator 10 comprises a first rotor 22, which has four rotor blades 24, and a second rotor 26, which is provided with four rotor blades 28. The plastic rotors 22 and 26 are rotatably connected to the hollow shaft 14 and spaced from each other so that they define between them a gap 30 in which the aggregate outlet openings 16 are positioned. The rotor blades 24 of the first rotor 22 and the rotor blades 28 of the second rotor 26 are arranged in opposite directions, that is inclined in opposite directions, so that they produce substantially opposite currents during operation.

Nachfolgend wird unter Bezugnahme auf Figur 3 die Funktionsweise des Rührwerks 10 erläutert.The following is with reference to FIG. 3 the operation of the agitator 10 explained.

Wird das freie Ende der Hohlwelle 14 mit den daran gehaltenen Rotoren 22 und 26 in eine mit Abwasser 32 gefüllte Abwasserrinne 34 getaucht, wie es in Figur 3 dargestellt ist, und die Hohlwelle 14 daraufhin mithilfe des Motors 12 in der mit dem Pfeil 36 gekennzeichneten Drehrichtung angetrieben, so wird innerhalb des Abwasser 32 durch den ersten Rotor 22 die Strömung A und durch den zweiten Rotor 26 die Strömung B erzeugt, wie es durch die entsprechenden Pfeile angedeutet ist. Mit anderen Worten wird Abwasser durch Antreiben des ersten Rotors 22 von oben in den Zwischenraum 30 gesogen, während der zweite Rotor 26 Abwasser von unten in den Zwischenraum 30 saugt oder führt, wodurch in dem Zwischenraum 30 ein Unterdruck erzeugt wird. Das in den Zwischenraum 30 gesogene Abwasser wird daraufhin radial auswärts aus dem Zwischenraum 30 gedrückt, so dass in dem Zwischenraum 30 zusätzlich eine Zentrifugalkraft erzeugt wird. Auf diese Weise wird einerseits eine sehr gute Durchmischung des zu behandelnden Abwassers 32 erzielt. Darüber hinaus wird der über die Hohlwelle 14 zugeführte Zuschlagstoff kontinuierlich aus den Zuschlagstoffaustrittsöffnungen 16 gesogen, wie es durch die Pfeile 38 angedeutet ist, wodurch eine gleichmäßige Beimischung des Zuschlagstoffes gewährleistet wird.If the free end of the hollow shaft 14 is immersed with the rotors 22 and 26 held in a waste water channel 34 filled with waste water 32, as in FIG. 3 is shown, and the hollow shaft 14 then driven by means of the motor 12 in the direction indicated by the arrow 36, the flow A is generated within the waste water 32 through the first rotor 22 and the flow through the second rotor 26, as by the corresponding arrows is indicated. In other words, waste water is sucked into the gap 30 from above by driving the first rotor 22, while the second rotor 26 sucks or guides waste water from below into the gap 30, thereby creating a negative pressure in the clearance 30. The sucked into the space 30 wastewater is then pressed radially outward from the gap 30, so that in the space 30 in addition a centrifugal force is generated. In this way, on the one hand, a very good mixing of the wastewater 32 to be treated is achieved. In addition, the supplied via the hollow shaft 14 aggregate is continuously sucked from the aggregate outlet openings 16, as indicated by the arrows 38, whereby a uniform admixture of the aggregate is ensured.

Bei dem Zuschlagstoff kann es sich beispielsweise um Eisenchlorid (FeCl3) handeln, das zur Phosphateliminierung im Abwasser eingesetzt wird.The additive can be, for example, iron chloride (FeCl 3 ), which is used to eliminate phosphate in the wastewater.

Der zuvor beschriebene Aufbau des Rührwerks 10 ist insbesondere dahingehend von Vorteil, dass mit einem einfachen Aufbau eine sehr gute Durchmischung des zu behandelnden Mediums sowie eine ordnungsgemäße Einbringung des Zuschlagstoffes gewährleistet werden kann.The above-described construction of the agitator 10 is particularly advantageous in that a very good mixing of the medium to be treated and a proper introduction of the additive can be ensured with a simple structure.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Rührwerkagitator
1111
Montageplattemounting plate
1212
Motorengine
1414
Hohlwellehollow shaft
1616
ZuschlagstoffaustrittsöffnungAggregate outlet opening
1818
ZuschlagstoffzuführleitungZuschlagstoffzuführleitung
2020
HohlwellenachseHollow shaft axis
2222
Erster RotorFirst rotor
2424
Rotorblattrotor blade
2626
Zweiter RotorSecond rotor
2828
Rotorblattrotor blade
3030
Zwischenraumgap
3232
Abwassersewage
3434
Abwasserrinnewastewater channel
3636
Pfeilarrow
3838
Pfeilarrow
4040
Zuführrohrfeed

Claims (8)

  1. Stirrer (10) having
    - a motor (12);
    - a hollow shaft (14) that is drivable via the motor (12) and is provided with at least one additive outlet opening (16), via which an additive passed through the hollow shaft (14) or a feed tube (40) guided therein can be discharged;
    - and a rotor (22) arranged on the hollow shaft (14) and having rotor blades (24),
    - wherein a second rotor (26) having rotor blades (28) is provided on the hollow shaft (14) at a distance from the first rotor (22),
    - wherein the at least one additive outlet opening (16) is provided between the two rotors (22, 26),
    - wherein the rotor blades (24) of the first rotor (22) and the rotor blades (28) of the second rotor (26) are arranged so as to move in opposite directions or are inclined in opposite directions such that, during operation, a negative pressure and a centrifugal force are generated in the intermediate space (30) defined between the rotors (22, 26),
    - wherein the suction sides of the rotors face away from one another and the pressure sides of the rotors are provided between the rotors.
  2. Stirrer (10) according to Claim 1, characterized in that the rotors (22, 26) are connected to the hollow shaft (14) so as to rotate therewith.
  3. Stirrer (10) according to either of Claims 1 and 2, characterized in that the rotors (22, 26) are arranged in the region of the free end of the hollow shaft (14).
  4. Stirrer (10) according to one of the preceding claims, characterized in that the hollow shaft (14) and the rotor blades (24, 28) of the first rotor (22) and of the second rotor (26) are produced from plastics material.
  5. Stirrer (10) according to one of the preceding claims, characterized in that the at least one additive outlet opening (16) is an elongate cutout which extends in particular in the direction of the hollow shaft axis (20).
  6. Stirrer (10) according to one of the preceding claims, characterized in that a plurality of additive outlet openings (16), which are arranged in a regularly distributed manner along the circumference of the hollow shaft (14), are provided.
  7. Stirrer (10) according to one of the preceding claims , characterized in that the motor (12) is an electric motor and/or is fastened to a mounting plate (11).
  8. Stirrer (10) according to one of the preceding claims, characterized in that the hollow shaft (14) and the motor (12) are arranged coaxially, wherein an additive feed line (18) is connected in particular to the opposite side of the motor (12) from the hollow shaft (14).
EP11757251.1A 2010-09-10 2011-09-07 Stirrer Active EP2613871B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11757251T PL2613871T3 (en) 2010-09-10 2011-09-07 Stirrer

Applications Claiming Priority (2)

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DE102010037473 2010-09-10
PCT/EP2011/065491 WO2012032090A1 (en) 2010-09-10 2011-09-07 Stirrer

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CA (1) CA2810758C (en)
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Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2613871T3 (en) * 2010-09-10 2016-07-29 Ecolab Usa Inc Stirrer
KR101040927B1 (en) 2011-03-30 2011-06-16 (주)플록마스터 Sludge Shredding Mixing Equipment
US9643141B2 (en) 2011-10-27 2017-05-09 Trimr, Llc Shakeable container with agitator
USD804247S1 (en) * 2012-10-26 2017-12-05 Trimr, Llc Agitator on straw or rod for a shakable container
CN103657471B (en) * 2013-11-27 2015-10-28 江苏浩特隆搅拌设备有限公司 Rubbish fermentation special-purpose stirring machine
CA2931984A1 (en) 2013-12-17 2015-06-25 Bayer Cropscience Lp Mixing systems, methods, and devices with extendible impellers
US20190143281A1 (en) * 2017-11-16 2019-05-16 Plasma Environmental LLC System and method for aerating a fluid
CN108579595B (en) * 2018-05-16 2020-10-09 重庆市永川区天堂化工厂 Agricultural pesticide agitated vessel
WO2020264545A1 (en) * 2019-06-24 2020-12-30 Siemens Healthcare Diagnostics Inc. Methods and apparatus for rotary mixing of laboratory samples
CA3151714A1 (en) * 2019-09-27 2021-04-01 Benjamin Isaiah BISHOP Chemistry vessel agitator
CN111744712B (en) * 2020-07-08 2021-11-16 苏州市相城区渭塘城乡发展有限公司 Communication equipment shell processing sprays paint and uses mixing arrangement
CN118002013B (en) * 2024-04-10 2024-06-11 山东百特新能源科技有限公司 Powder mixing and stirring equipment and using method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US975380A (en) * 1910-04-01 1910-11-08 Worth Carnahan J Vacuum churn apparatus.

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US332349A (en) * 1885-12-15 Churn
US684295A (en) * 1901-05-13 1901-10-08 Frederick A Mclellan Grain-scourer.
US1242445A (en) * 1916-01-06 1917-10-09 Martin H Ittner Apparatus for treating liquids with gases.
US2203673A (en) * 1938-08-17 1940-06-11 Cornell Machine Company Treating process
US2404679A (en) 1945-04-04 1946-07-23 Andron Philip Carbonator
US2928661A (en) 1958-06-09 1960-03-15 Albert S Maclaren Gas and liquid mixing apparatus
US3400918A (en) 1967-03-08 1968-09-10 David S. Maclaren Sewage aerator
US3776531A (en) * 1972-03-16 1973-12-04 M Ebner Apparatus and propeller for entraining fluids in liquids
NL7503044A (en) 1974-03-21 1975-09-23 Raess Paul AERATION SCREW.
SU1454367A1 (en) 1987-04-29 1989-01-30 Московский институт народного хозяйства им.Г.В.Плеханова Working member for whipping machine
DE9306907U1 (en) 1993-05-07 1993-08-12 Alcatel Sel Aktiengesellschaft, 70435 Stuttgart Bending coupler with detector
CH686117A5 (en) * 1993-07-08 1996-01-15 Biazzi Sa gas-liquid reaction apparatus.
US6158722A (en) * 1998-09-23 2000-12-12 General Signal Corporation Mixing system for introducing and dispersing gas into liquids
CH696494A5 (en) 2003-04-30 2007-07-13 Andreas Kloss A device for the microbiological fermentation and cultivation of cells.
US7168849B2 (en) 2005-02-04 2007-01-30 Spx Corporation Agitation apparatus and method for dry solids addition to fluid
PL2613871T3 (en) * 2010-09-10 2016-07-29 Ecolab Usa Inc Stirrer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US975380A (en) * 1910-04-01 1910-11-08 Worth Carnahan J Vacuum churn apparatus.

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ES2564536T3 (en) 2016-03-23
US9120063B2 (en) 2015-09-01
PL2613871T3 (en) 2016-07-29
US20130294190A1 (en) 2013-11-07
US20150367299A1 (en) 2015-12-24
WO2012032090A1 (en) 2012-03-15
CA2810758A1 (en) 2012-03-15
EP2613871A1 (en) 2013-07-17
US9744505B2 (en) 2017-08-29
CA2810758C (en) 2017-02-14

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