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DE9106639U1 - Hyperboloid stirring and gassing system for stirring, mixing and gassing in single or multi-phase fluids - Google Patents

Hyperboloid stirring and gassing system for stirring, mixing and gassing in single or multi-phase fluids

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Publication number
DE9106639U1
DE9106639U1 DE9106639U DE9106639U DE9106639U1 DE 9106639 U1 DE9106639 U1 DE 9106639U1 DE 9106639 U DE9106639 U DE 9106639U DE 9106639 U DE9106639 U DE 9106639U DE 9106639 U1 DE9106639 U1 DE 9106639U1
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DE
Germany
Prior art keywords
hyperboloid
stirring
gassing
gassing system
agitator
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.)
Expired - Lifetime
Application number
DE9106639U
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German (de)
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Individual
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Priority to DE9106639U priority Critical patent/DE9106639U1/en
Publication of DE9106639U1 publication Critical patent/DE9106639U1/en
Priority to DE4218027A priority patent/DE4218027A1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • B01F23/2331—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
    • B01F23/23314—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 element
    • 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
    • B01F23/23362—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 under the stirrer
    • 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
    • B01F23/2366—Parts; Accessories
    • B01F23/2368—Mixing receptacles, e.g. tanks, vessels or reactors, being completely closed, e.g. hermetically closed
    • 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
    • B01F27/117—Stirrers provided with conical-shaped elements, e.g. funnel-shaped
    • 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
    • B01F27/117—Stirrers provided with conical-shaped elements, e.g. funnel-shaped
    • B01F27/1171—Stirrers provided with conical-shaped elements, e.g. funnel-shaped having holes in the surface

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Description

Vorteilhafte Wirkungen der Erfindung;Advantageous effects of the invention;

Mit der Erfindung wird erreicht, daß im Rühr- und im Mischbetrieb erheblich weniger Energie verbraucht wird, als bei herkömmlichen Systemen. Dies insbesondere, weil das Hyperboloid-Rührwerk strömungsmechanisch optimiert wurde und die Form, dem Verlauf der Stromlinien in Rührbehältern entspricht. Daher kommt es zu keinen Ablösungen auf der Rühreroberfläche. Ein hoher Wirkungsgrad ist die Folge. Die Umwälzung der Medien geschieht scherkraftarm. Dies ist insbesondere in empfindlichen oder in mehrphasigen Medien, bei denen eine Phase nicht zerstört werden darf, von Vorteil. Die Energie wird in Sohlnähe eingebracht, was für das Erzielen einer hohen Sohlgeschwindigkeit zum Aufwirbeln von Partikeln oder sonstigen Inhaltsstoffen sehr wichtig ist. Die Oberflächengeschwindigkeiten und die Oberflächenturbulenz sind sehr gering. Dadurch entsteht kein ungewollter Sauerstoffeintrag und ebenfalls kein ungewollter Aerosolaustrag, der eventuell zu Geruchsbelästigungen führen könnte. Das System ist gut regelbar. Über die Drehzahl des Systems lassen sich kontinuierliche Rühr- und Mischzustände einstellen. Das System ist auch zu Begasungszwecken einsetzbar. Dadurch werden im System eine Reihe weiterer Anwendungsgebiete in der chemischen Industrie, der Biotechnologie, der Lackindustrie oder der Lebensmittelindustrie, wie auch der biologischen Abwasserreinigung eröffnet.The invention means that considerably less energy is used in stirring and mixing operations than in conventional systems. This is particularly because the hyperboloid agitator has been optimized in terms of fluid mechanics and its shape corresponds to the course of the streamlines in stirring vessels. As a result, there is no detachment on the agitator surface. This results in high efficiency. The circulation of the media takes place with little shear force. This is particularly advantageous in sensitive or multi-phase media where one phase must not be destroyed. The energy is introduced near the bottom, which is very important for achieving a high bottom speed for stirring up particles or other ingredients. The surface speeds and surface turbulence are very low. This means that there is no unwanted oxygen input and also no unwanted aerosol discharge, which could potentially lead to odor nuisance. The system is easy to control. Continuous stirring and mixing states can be set using the speed of the system. The system can also be used for fumigation purposes. This opens up a range of other areas of application in the chemical industry, biotechnology, the paint industry, the food industry, and biological wastewater treatment.

Weiterentwicklungen der Erfindung:Further developments of the invention:

Die Weiterentwicklung der Erfindung nach den Ansprüchen 2 und 3 sichern die Möglichkeit der zusätzlichen Begasung.The further development of the invention according to claims 2 and 3 ensures the possibility of additional gassing.

Die Weiterentwicklung der Erfindung nach Anspruch 4 bietet die Möglichkeit ohne zusätzliche Gebläse Luft in die Medien einzusaugen. Diese selbstansaugende Version erweitert den technischen Anwendungsbereich des Systems erheblich.The further development of the invention according to claim 4 offers the possibility of sucking air into the media without additional fans. This self-priming version significantly expands the technical application area of the system.

Die Weiterentwicklung der Erfindung nach Anspruch 5 gewährt eine gewisse Flexibilität gegenüber speziellen Anwendungsfällen, bei denen kein Bodenlager verwendet werden kann.The further development of the invention according to claim 5 provides a certain flexibility with regard to special applications in which no floor bearing can be used.

Die Weiterentwicklung des Systemes nach Anspruch 6 ermöglicht in gewissen Fällen ein Aus- und Einbau der Systeme bei gefluteten Behälter Dies kan für Wartungsarbeiten von großer Bedeutung sein.The further development of the system according to claim 6 enables in certain cases the systems to be removed and installed in flooded containers. This can be of great importance for maintenance work.

Anspruch 7 sichert neben dem allgemeinen Anspruch auf eine hyperboloidähnliche Form, die aus Berechnungen der Stromlinien in Behältern üblicher Ausführung entsteht, den Anspruch, die hyperboloidähnliche Form in speziellen Fällen exakt nach der sich bei einzelnen Aufgabenstellungen einstellenden Strömung zu gestalten. Dies kann notwendig sein, um den Energieverbrauch noch weiter zu reduzieren.Claim 7 secures, in addition to the general claim to a hyperboloid-like shape that arises from calculations of the streamlines in containers of standard design, the claim to design the hyperboloid-like shape in special cases exactly according to the flow that occurs in individual tasks. This may be necessary in order to reduce energy consumption even further.

Anlage 1 - BeschreibungAnnex 1 - Description

Beschreibung Hyperboloid Rühr- und Begasungssystem zum Rühren, Mischen und Begasen von ein- oder mehrphasigen FluidenDescription Hyperboloid stirring and gassing system for stirring, mixing and gassing of single or multi-phase fluids

Stand der Technik:State of the art:

Rührwerke, Mischer und Begaser herkömmlicher Bauart bestehen meist aus an rotierenden Wellen befestigten Propellern, Ankern, Schaufelblättern, Turbinenläufern oder Wendeln. Diese Rührerformen können in Rundbecken, Tanks oder Rechteckbecken mit und ohne Strömungsstörer eingesetzt werden. Hierbei werden Rührertyp und Drehzahl in Abhängigkeit der Viskosität und der speziellen Anwendung ausgelegt. Eine Übersicht über herkömmliche Rührertypen findet man zum Beispiel in Zlokarnik/Indat; Rührtechnik; Bayer AG, Leverkusen 1983.Conventional agitators, mixers and gasifiers usually consist of propellers, anchors, paddle blades, turbine rotors or spirals attached to rotating shafts. These types of agitators can be used in round basins, tanks or rectangular basins with and without flow disruptors. The type of agitator and the speed are designed depending on the viscosity and the specific application. An overview of conventional types of agitators can be found, for example, in Zlokarnik/Indat; Rührtechnik; Bayer AG, Leverkusen 1983.

Problem;Problem;

Herkömmliche Rührwerke können nicht zwischen den Betriebszuständen Rühren, Mischen und Begasen trennen, da die Rührerformen unnötig viel Turbulenz einbringen und so z. Bsp. im Rührbetrieb auch zu einem großen Teil mischen und durch eine hohe Oberflächenturbulenz immer Sauerstoff mit in das Medium eingebracht wird. Aus diesem Grunde sind herkömmliche Systeme weiterhin schlecht regelbar und haben einen zu hohen Energieverbrauch. Durch die hohen Oberflächengeschwindigkeiten bewirkt man zusätzlich zum ungewollten Sauerstoffeintrag einen Aerosolaustrag der zu Geruchsbelästigungen führen kann. Aus bereits angeführten Gründen treten meist hohe Scherkräfte auf, was für bestimmte Prozesse sehr schädlich sein kann (Zerstörung von Biologien oder empfindlichen Teilchen, induzieren ungewollter Reaktionen, etc.).Conventional agitators cannot differentiate between the operating states of stirring, mixing and gassing, as the agitator shapes introduce unnecessary turbulence and thus, for example, during stirring operation mixing also takes place to a large extent and high surface turbulence always introduces oxygen into the medium. For this reason, conventional systems are still difficult to control and have too high energy consumption. The high surface speeds cause, in addition to the unwanted oxygen input, aerosol discharge which can lead to odor nuisance. For the reasons already mentioned, high shear forces usually occur, which can be very harmful for certain processes (destruction of biology or sensitive particles, induction of unwanted reactions, etc.).

Kombinierte Systeme herkömmlicher Bauart bestehen meist aus einem getrennten Rühr- und Begasungsaggregat, bei denen das Begasungsaggregat meist aus einem Membranbegaser besteht. Diese Systeme erfordern immer einen hohen Investitionsaufwand, da herkömmliche Begasungssysteme, wie zum Beispiel Membranbegaser getrennt installieren werden müssen und sehr teuer sind.Combined systems of conventional design usually consist of a separate stirring and gassing unit, where the gassing unit usually consists of a membrane gasser. These systems always require a high investment, since conventional gassing systems, such as membrane gassers, have to be installed separately and are very expensive.

Erfindung:Invention:

Aufgeführte Probleme werden mit der Verwendung eines Hyperboloid-Rühr- und Begasungssystems nach den Maßnahmen des Anspruches 1 gelöst.The problems listed are solved by using a hyperboloid stirring and gassing system according to the measures of claim 1.

Darstellung der Erfindung;Description of the invention;

Ein Ausführungsbeispiel der Erfindung wird anhand der Zeichnungen 1 bis 3 erläutert.An embodiment of the invention is explained with reference to drawings 1 to 3.

Bild 1 zeigt das Hyperboloid-Rühr- und Begasungssystem beim Einsatz in einem typischen Reaktortank. Man erkennt deutlich die Transportrippen zur Induzierung der Hauptströmung in dem Reaktortank, sowie an der Rührerunterseite die angebrachten Scherrippen zum Dispergieren, hier durch einen offenen Rohrstutzen eingebrachten Luft in kleine Bläschen. Weiterhin eingezeichnet sind die Stromlinien, die exakt der Rührerform entsprechen. Figure 1 shows the hyperboloid stirring and gassing system in use in a typical reactor tank. The transport ribs for inducing the main flow in the reactor tank can be clearly seen, as well as the shear ribs attached to the underside of the stirrer for dispersing air, here introduced through an open pipe socket, into small bubbles. The streamlines, which correspond exactly to the shape of the stirrer, are also shown.

Bild 2 zeigt das Hyperboloid-Rührsystem in einem typischen Rührbehälter ohne Strömungsbrecher. Hier fehlt die zusätzliche Rohrleitung zur Begasung sowie die Scherrippen zum Erzeugen von kleinen Luftbläschen. Man erkennt lediglich die Transportrippen zur Induzierung der Strömung. Figure 2 shows the hyperboloid stirring system in a typical stirred tank without a flow breaker. The additional pipe for gassing and the shear ribs for generating small air bubbles are missing here. Only the transport ribs for inducing the flow can be seen.

Bild 3 zeigt das Hyperboloid-Rühr- und Begasungssystem in einem typischen Reckteckbecken. Man erkennt hier die gleichen Einzelheiten wie in Bild 1. Figure 3 shows the hyperboloid stirring and gassing system in a typical rectangular tank. The same details can be seen here as in Figure 1.

Claims (7)

Anlage 2Annex 2 Hyperboloid-Rühr- und Begasungssystem zum Rühren, Mischen und Begasen von ein- und mehrphasigen Fluiden,Hyperboloid stirring and gassing system for stirring, mixing and gassing of single-phase and multi-phase fluids, dadurch gekennzeichnet,characterized, daß ein hyperboloidförmiger Rührkörper an einer rotierenden Welle befestigt ist. Dieser hyperboloidförmige Körper ist an der Oberseite mit sogenannten Transportrippen versehen, die in Anzahl, Form und Ausrichtung, sowie dem Anbringungsort auf der Rühreroberfläche variieren können.that a hyperboloid-shaped stirring body is attached to a rotating shaft. This hyperboloid-shaped body is provided with so-called transport ribs on the top, which can vary in number, shape and orientation, as well as the location on the stirrer surface. 2. Hyperboloid-Rühr- und Begasungssystem nach Anspruch 1
dadurch gekennzeichnet,2. Hyperboloid stirring and gassing system according to claim 1
characterized, da/3 zusätzlich an der Unterseite des Hyperbolid-Körpers Scherrippen zum Dispergieren von Luft angebracht sind. Diese Scherrippen können nach Anzahl, Form und Ausrichtung, sowie Anbringungsort variieren.da/3 additionally, shear ribs are attached to the underside of the hyperbolic body to disperse air. These shear ribs can vary in number, shape and orientation, as well as location. 3. Hyperboloid-Rühr- und Begasungssystem nach Anspruch 1 und 2,
dadurch gekennzeichnet,3. Hyperboloid stirring and gassing system according to claim 1 and 2,
characterized, da/3 zusätzlich eine Zuluftleitung unter den Hyperboloid-Körper geführt ist, die in einer sich unter dem Hyperboloid-Körper ausbildenden Luftblase endet. Das Ende der Zuluftleitung kann sowohl als offener Rohrstutzen als auch als Mehrfach-System offener Rohrstutzen sowie in angebohrten Ringleitungen enden.da/3 an additional air supply line is routed under the hyperboloid body, which ends in an air bubble that forms under the hyperboloid body. The end of the air supply line can end as an open pipe socket, as a multiple system of open pipe sockets, or in drilled ring lines. 4. Hyperboloid-Rühr- und Begasungssystem nach Anspruch 1 und 2,
dadurch gekennzeichnet,4. Hyperboloid stirring and gassing system according to claim 1 and 2,
characterized, da/3 die Welle, an dem der Hyperboloid-Körper befestigt ist, als Hohlwelle ausgeführt ist, die sowohl über der Oberfläche des Mediums als auch unter dem Hyperboloid-Körper Löcher oder Schlitze aufweist, sodaß durch die Drehung und die induzierte Strömung und dem dadurch entstehenden Unterdruck unter dem Rührwerk eine Selbstansaugung von Luft ermöglicht wird.da/3 the shaft to which the hyperboloid body is attached is designed as a hollow shaft, which has holes or slots both above the surface of the medium and below the hyperboloid body, so that the rotation and the induced flow and the resulting negative pressure under the agitator enable self-suction of air. 5. Hyperboloid-Rühr- und Begasungssystem nach den Ansprüchen
1 bis 4,5. Hyperboloid stirring and gassing system according to the claims
1 to 4, dadurch gekennzeichnet,characterized, da/3 die Rührwelle in einem Bodenlager gelagert sein kann oder ohne Bodenlager fliegend betrieben werden kann.da/3 the agitator shaft can be mounted in a bottom bearing or can be operated floating without a bottom bearing. 91 06 839.91 06 839. 6. Hyperboloid-Rühr- und Begasungssystem nach den Ansprüchen
1 bis 5,6. Hyperboloid stirring and gassing system according to the claims
1 to 5, dadurch gekennzeichnet,characterized, da/3 ein existierendes Bodenlager so ausgeführt ist, daß sowohl Radial- als auch Axialkräfte aufgenommen werden können und das Rührwerk komplett mit der Radial/Axiallagerung jederzeit bei gefülltem Becken nach oben hin aus- und eingebaut werden kann.da/3 an existing bottom bearing is designed in such a way that both radial and axial forces can be absorbed and the agitator complete with the radial/axial bearing can be removed and installed upwards at any time when the tank is full. 7. Hyperboloid-Rühr- und Begasungssystem nach Ansprüchen
1 bis 6,7. Hyperboloid stirring and gassing system according to claims
1 to 6, dadurch gekennzeichnet,characterized, da/3 die Hyperboloidform exakt der theoretischen Berechnung der Stromlinien in den Strömungsbehältern entspricht.da/3 the hyperboloid shape corresponds exactly to the theoretical calculation of the streamlines in the flow containers. flfiflfi
DE9106639U 1991-05-30 1991-05-30 Hyperboloid stirring and gassing system for stirring, mixing and gassing in single or multi-phase fluids Expired - Lifetime DE9106639U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE9106639U DE9106639U1 (en) 1991-05-30 1991-05-30 Hyperboloid stirring and gassing system for stirring, mixing and gassing in single or multi-phase fluids
DE4218027A DE4218027A1 (en) 1991-05-30 1992-06-01 Fluid agitation and aeration - has hyperboloid agitator body which separates actions for min. energy consumption

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9106639U DE9106639U1 (en) 1991-05-30 1991-05-30 Hyperboloid stirring and gassing system for stirring, mixing and gassing in single or multi-phase fluids

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DE9106639U1 true DE9106639U1 (en) 1991-09-05

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009018873A1 (en) * 2007-08-09 2009-02-12 Invent Umwelt-Und Verfahrenstechnik Ag Stirring device for activated sludges
WO2009018916A1 (en) * 2007-08-09 2009-02-12 Invent Umwelt-Und Verfahrenstechnik Ag Stirring device for activated sludges
DE102013225658A1 (en) 2013-12-11 2015-06-11 Invent Umwelt- Und Verfahrenstechnik Ag Agitator and stirrer for generating a flow in a waste water treatment tank
DE102014204824A1 (en) * 2014-03-14 2015-09-17 Invent Umwelt-Und Verfahrenstechnik Ag Stirring device for wastewater
US10058832B2 (en) * 2013-12-11 2018-08-28 Invent Umwelt- Und Verfahrenstechnik Ag Device for circulating a liquid received in a container having a stirring body with an aperture provided on the stirring body
US10195573B2 (en) * 2013-12-11 2019-02-05 Invent Umwelt-Und Verfaiirenstechnik Ag Stirring element having segmented configuration, for circulating wastewater in basin, and apparatus
DE102019111489A1 (en) * 2019-05-03 2020-11-05 Invent Umwelt-Und Verfahrenstechnik Ag Sewage purification device and method for purifying sewage

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US2055065A (en) * 1932-03-26 1936-09-22 Galigher Company Aerating machine
DE879081C (en) * 1951-02-23 1953-06-11 Michael Philosophow Agitator with air supply
CH462113A (en) * 1967-04-25 1968-09-15 Adolf Staaf Gustaf Mixer for liquids
DE2318202A1 (en) * 1973-04-11 1974-10-24 Hans Dr Ing Kohlmann Effluent treatment aerator rotor - is thin walled cone with inner blades and hollow shaft
DE2722826A1 (en) * 1976-05-21 1977-12-01 Union Carbide Corp DEVICE FOR INJECTION OF GAS INTO A LIQUID
DE3603466A1 (en) * 1985-05-31 1987-08-06 Franz Dr Ing Nestmann Apparatus for introducing gas into and circulating liquids in tanks

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2055065A (en) * 1932-03-26 1936-09-22 Galigher Company Aerating machine
DE879081C (en) * 1951-02-23 1953-06-11 Michael Philosophow Agitator with air supply
CH462113A (en) * 1967-04-25 1968-09-15 Adolf Staaf Gustaf Mixer for liquids
DE2318202A1 (en) * 1973-04-11 1974-10-24 Hans Dr Ing Kohlmann Effluent treatment aerator rotor - is thin walled cone with inner blades and hollow shaft
DE2722826A1 (en) * 1976-05-21 1977-12-01 Union Carbide Corp DEVICE FOR INJECTION OF GAS INTO A LIQUID
DE3603466A1 (en) * 1985-05-31 1987-08-06 Franz Dr Ing Nestmann Apparatus for introducing gas into and circulating liquids in tanks

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009018873A1 (en) * 2007-08-09 2009-02-12 Invent Umwelt-Und Verfahrenstechnik Ag Stirring device for activated sludges
WO2009018916A1 (en) * 2007-08-09 2009-02-12 Invent Umwelt-Und Verfahrenstechnik Ag Stirring device for activated sludges
US8434744B2 (en) 2007-08-09 2013-05-07 Invent Umwelt-Und Verfahrenstechnik Ag Stirring device for activated sludges
US8651732B2 (en) 2007-08-09 2014-02-18 Invent Umwelt-Und Verfahrenstechnik Ag Stirring device for activated sludges
DE102013225658A1 (en) 2013-12-11 2015-06-11 Invent Umwelt- Und Verfahrenstechnik Ag Agitator and stirrer for generating a flow in a waste water treatment tank
WO2015086198A1 (en) 2013-12-11 2015-06-18 Invent Umwelt- Und Verfahrenstechnik Ag Agitating member and agitating device for creating a current in a wastewater treatment basin
US10058832B2 (en) * 2013-12-11 2018-08-28 Invent Umwelt- Und Verfahrenstechnik Ag Device for circulating a liquid received in a container having a stirring body with an aperture provided on the stirring body
US10130921B2 (en) * 2013-12-11 2018-11-20 Invent Umwelt—Und Verfahrenstechnik Ag Agitating member and agitating device having a plurality of segments for creating a current in a wastewater treatment basin
US10195573B2 (en) * 2013-12-11 2019-02-05 Invent Umwelt-Und Verfaiirenstechnik Ag Stirring element having segmented configuration, for circulating wastewater in basin, and apparatus
DE102014204824A1 (en) * 2014-03-14 2015-09-17 Invent Umwelt-Und Verfahrenstechnik Ag Stirring device for wastewater
US10112161B2 (en) 2014-03-14 2018-10-30 Invent Umwelt—Und Verfahrenstechnik Ag Stirring device for wastewater having a slide sleeve and a device for detecting state of wear of the slide sleeve
DE102019111489A1 (en) * 2019-05-03 2020-11-05 Invent Umwelt-Und Verfahrenstechnik Ag Sewage purification device and method for purifying sewage

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