WO2003011774A1 - Aerator for bodies of water - Google Patents

Aerator for bodies of water Download PDF

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Publication number
WO2003011774A1
WO2003011774A1 PCT/EP2002/007942 EP0207942W WO03011774A1 WO 2003011774 A1 WO2003011774 A1 WO 2003011774A1 EP 0207942 W EP0207942 W EP 0207942W WO 03011774 A1 WO03011774 A1 WO 03011774A1
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WO
WIPO (PCT)
Prior art keywords
water
impeller
air
housing
aerator
Prior art date
Application number
PCT/EP2002/007942
Other languages
German (de)
French (fr)
Inventor
Gerhard Möller
Original Assignee
Moeller Gerhard
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE2001154396 external-priority patent/DE10154396A1/en
Application filed by Moeller Gerhard filed Critical Moeller Gerhard
Publication of WO2003011774A1 publication Critical patent/WO2003011774A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water
    • 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
    • B01F23/2334—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer
    • B01F23/23341—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer with tubes surrounding 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
    • B01F23/233—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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/205—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors
    • C02F3/206—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors with helical screw impellers
    • 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
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1143—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections screw-shaped, e.g. worms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the invention relates to an aerator for water with a motor-driven pump impeller.
  • a wide variety of aerators for water are known. Their construction is technically complicated and complex, so that they are not suitable, especially for private use in smaller waters and ponds. Furthermore, the mixing of the water with air is insufficient, so that a large part of the air in the form of air bubbles rises up to the water surface and does not remain in the water.
  • the object of the invention is to improve an aerator of the type mentioned in such a way that, with simple construction and handling, a high lingering mixing of the air into the water is produced.
  • the water-promoting impeller is an axial impeller or screw impeller that runs in a housing that is open at the bottom and located in the body of water, and that an air-guiding pipe ends in the lower region of the housing, from which the water flow sucks in air.
  • the air sucked in by the water is swirled so strongly in the water that tiny air bubbles form in the water, which dissolve in the water and thus produce a high degree of mixing of air into the water. Since the air flows in with negative pressure and these air bubbles do not expand against the water pressure, but vice versa, they are pressed together by the water pressure and cannot rise.
  • vanes are fastened to a hollow shaft driven by the motor, through the interior of which air is sucked in by the water flow directly or via an axial tube located in the interior. This leads to a particularly simple and low-vibration construction.
  • the hollow shaft is arranged perpendicular to the water surface and surrounded by the housing, which forms an annular space open at the bottom with the hollow shaft in which the pump blades run, which press the water downwards.
  • a particularly favorable and high water flow rate is achieved if the annular space tapers at its lower end.
  • the air-guiding hollow shaft or the air-guiding pipe ends in the lower region of the housing is preferably proposed.
  • a particularly advantageous alternative embodiment is created when an air-guiding pipe ends below the blades in the water flow of the ventilation housing and runs upwards over the water surface to the side of the impeller.
  • a simple and invisible construction is created when the upper end of the housing is below the water surface and an inlet opening forms, which is covered by a perforated surface, in particular by a perforated plate or a sieve.
  • the motor is arranged above the hollow shaft, in particular as an electric motor, and that the motor output shaft is connected to the hollow shaft directly or via a gear. It is also an advantage if the aerator floats on the water surface.
  • Environmentally friendly operation is achieved if solar cells or a wind turbine are / are connected to the electric motor.
  • a surface is arranged below the aerator, in particular attached obliquely to the downward flow, which the flow meets and is deflected to the side. It is preferably proposed if the direction of rotation of the electric motor and the impeller is briefly reversed in order to clean the water inlet openings.
  • Figure 1 shows a first embodiment with a driven air duct
  • FIG. 2 shows a driven hollow shaft with an impeller, which coaxially surrounds the stationary air-carrying tube
  • Figure 3 shows a third embodiment with a laterally inserted air tube
  • Figure 4 shows a fourth embodiment with a non-driven hollow shaft.
  • a cylindrical housing 1 is largely let into a body of water in such a way that only about a quarter of the housing projects beyond the water surface 2.
  • the axis of the housing 1 is vertical and within the housing an air tube 3 is arranged coaxially and on the drive shaft 4 of an electric motor 5, which is arranged above the housing.
  • the tube 3 thus forms a hollow shaft which projects above the water surface and has air inlets 6 at the top.
  • An annular space 1a exists between the tube 3 and the housing 1.
  • an impeller 7 is fastened coaxially, which is an axial impeller or a screw impeller, the wings of which are located with their outer ends near the inner wall of the housing 1, so that when the tube 3 and thus the impeller 7 rotate the engine 5 water is sucked in through the water inlets 8 and pressed down onto the lower end of the housing 1.
  • the water emerges vertically from the lower water outlet 9 of the housing 1. Instead, the water can also emerge at an angle at the bottom.
  • the housing 1 is arranged with its axis at an angle in the water and thus the water outlet 9 is also at an angle and / or below the outlet 9 a surface (baffle plate, baffle plates) is attached at an angle to the outflowing water, in order to avoid low water to prevent mud from churning.
  • the air-carrying pipe 3 also ends with its coaxial air outlet 10.
  • the water thus emerges from the annular water outlet 9, which surrounds the running outlet 10, as a result of which the water sucks air out of the pipe 10 and finely swirls and distributes it in the water ,
  • the exemplary embodiment according to FIG. 2 differs from the first in that the tube 3 stands still and is surrounded coaxially in the upper region by a hollow shaft 11 which is driven by the drive shaft 4 of the motor 5.
  • the impeller 7 is not fixed on the tube 3 but on the outside on the hollow shaft 11. Otherwise, the function is the same as in the exemplary embodiment according to FIG. 1.
  • the third exemplary embodiment according to FIG. 3 differs from the previous one in that the air-guiding tube 3 is not arranged coaxially in the upper area but laterally and is guided below the impeller into the interior of the housing below the impeller in order to again end in the middle in the water outlet 9 ,
  • the impeller 7 is attached directly to the drive shaft, in particular via a shaft extension.
  • the housing 1 is completely immersed and the motor output shaft 4 runs downward and the impeller 7 is fastened at its lower end.
  • the shaft 4 is coaxially surrounded by a tube 3, the inside diameter of which is larger than the diameter of the shaft 4, so that between the shaft and the tube there is an annular space 12 which forms an air inlet 6 above the water surface 2, in particular near the motor 5.
  • the lower end of the annular space 12 opens into the hub 13 of the impeller 7 and is connected to the air outlet 10 of the hub 13 via channels, in particular bores 14 in the hub.
  • the housing 1 forms with its upwardly conically widening upper end an annular inlet opening 1 b, which lies below the water surface 2 and is covered by a conical perforated plate 8 or sieve. So that the inlet openings 6, in particular of the perforated plate / sieve, are cleaned, the electric motor 5 is briefly driven in the opposite direction of rotation, as a result of which the impeller pumps water through the housing from the bottom to the top.
  • the electric motor is preferably connected to solar cells generating electricity or to a wind turbine generating electricity.
  • the aerator can be designed such that it floats in the water and part of the housing 1 projects above the water surface, so that the air inlet 6 is always above the water surface.
  • the container 1 can also be completely immersed in the water. If the motor is also submerged, it must be ensured that the motor 5 is constructed to be water-protected or has a water-protecting casing.

Abstract

The invention relates to an aerator for bodies of water, comprising a motor-driven pump impeller (7). The impeller (7) that transports the water is an axial impeller or screw impeller, which runs in a housing (1), whose lower end is open and that is located in the bodies of water. According to the invention, an air-bearing pipe (3), from which air is sucked into the stream of water, terminates in the lower region of the housing. The invention also relates to a method for operating an aerator. The rotational direction of the electric motor and the impeller is reversed for a short time, in order to clean the water inlets.

Description

Belüfter für Gewässer Aerators for water
Die Erfindung betrifft einen Belüfter für Gewässer mit einem motorisch angetriebenen Pumpenlaufrad.The invention relates to an aerator for water with a motor-driven pump impeller.
Es sind die unterschiedlichsten Belüfter für Gewässer bekannt. Deren Konstruktion ist technisch kompliziert und aufwendig, so dass sie sich, insbesondere für den privaten Gebrauch in kleineren Gewässern und Teichen nicht eignen. Ferner ist die Durchmischung des Wassers mit Luft nur unzureichend, so dass ein Großteil der Luft in Form von Luftblasen nach oben zur Wasseroberfläche steigt und nicht im Wasser verbleibt.A wide variety of aerators for water are known. Their construction is technically complicated and complex, so that they are not suitable, especially for private use in smaller waters and ponds. Furthermore, the mixing of the water with air is insufficient, so that a large part of the air in the form of air bubbles rises up to the water surface and does not remain in the water.
Aufgabe der Erfindung ist es, einen Belüfter der eingangs genannten Art so zu verbessern, dass bei einfacher Konstruktion und Handhabung eine hohe verweilende Einmischung der Luft in das Wasser erzeugt wird.The object of the invention is to improve an aerator of the type mentioned in such a way that, with simple construction and handling, a high lingering mixing of the air into the water is produced.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das Wasser fördernde Laufrad ein Axiallaufrad oder Schraubenlaufrad ist, das in einem unten offenen, im Gewässer befindlichen Gehäuse läuft, und dass im unteren Bereich des Gehäuses ein Luft führendes Rohr endet, aus dem die Wasserströmung Luft ansaugt. Die von dem Wasser angesaugte Luft wird im Wasser so stark verwirbelt, dass kleinste Luftbläschen im Wasser entstehen, die sich im Wasser auflösen und damit eine hohe Einmischung von Luft in das Wasser erzeugt wird. Da die Luft mit Unterdruck einströmt und diese Luftbläschen sich nicht gegen den Wasserdruck ausdehnen, sondern umgekehrt, werden sie vom Wasserdruck zusammengepreßt und können nicht aufsteigen.This object is achieved in that the water-promoting impeller is an axial impeller or screw impeller that runs in a housing that is open at the bottom and located in the body of water, and that an air-guiding pipe ends in the lower region of the housing, from which the water flow sucks in air. The air sucked in by the water is swirled so strongly in the water that tiny air bubbles form in the water, which dissolve in the water and thus produce a high degree of mixing of air into the water. Since the air flows in with negative pressure and these air bubbles do not expand against the water pressure, but vice versa, they are pressed together by the water pressure and cannot rise.
Es gibt Systeme, die Luftsauerstoff in Flüssigkeiten einleiten, die jedoch allesamt wider aufsteigen. Bei der erfindungsgemäßen Konstruktion wird der Luftsauerstoff angesaugt, also nicht komprimiert, so dass er auch nicht aufsteigen kann.There are systems that introduce atmospheric oxygen into liquids, but all of them rise again. In the construction according to the invention, the atmospheric oxygen is sucked in, ie not compressed, so that it cannot rise.
Besonders vorteilhaft ist es hierbei, wenn die Flügel auf einer vom Motor angetriebenen Hohlwelle befestigt sind, durch deren Innenraum direkt oder über ein im Innenraum liegendes axiales Rohr Luft durch die Wasserströmung angesaugt wird. Dies führt zu einer besonders einfachen und schwingungsarmen Konstruktion.It is particularly advantageous here if the vanes are fastened to a hollow shaft driven by the motor, through the interior of which air is sucked in by the water flow directly or via an axial tube located in the interior. This leads to a particularly simple and low-vibration construction.
Besonders vorteilhaft ist es hierbei, wenn die Hohlwelle lotrecht zur Wasseroberfläche angeordnet und von dem Gehäuse umgeben ist, das mit der Hohlwelle einen nach unten offenen Ringraum bildet, in dem die Pumpenflügel laufen, die das Wasser nach unten drücken.It is particularly advantageous here if the hollow shaft is arranged perpendicular to the water surface and surrounded by the housing, which forms an annular space open at the bottom with the hollow shaft in which the pump blades run, which press the water downwards.
Eine besonders günstige und hohe Wasserströmungsgeschwindigkeit wird erreicht, wenn der Ringraum sich an seinem unteren Ende verjüngt.A particularly favorable and high water flow rate is achieved if the annular space tapers at its lower end.
Vorzugsweise wird vorgeschlagen, dass im unteren Bereich des Gehäuses die Luft führende Hohlwelle oder das die Luft führende Rohr endet. Eine besonders vorteilhafte Alternative Ausführung wird geschaffen, wenn unterhalb der Flügel im Wasserstrom des Belüftungsgehäuses ein Luft führendes Rohr endet, das seitlich des Laufrades nach oben über die Wasseroberfläche läuft. Eine solche Konstruktion ist äußerst einfach und läßt auch einen besonders einfachen Pumpenaufbau zu.It is preferably proposed that the air-guiding hollow shaft or the air-guiding pipe ends in the lower region of the housing. A particularly advantageous alternative embodiment is created when an air-guiding pipe ends below the blades in the water flow of the ventilation housing and runs upwards over the water surface to the side of the impeller. Such a construction is extremely simple and also allows a particularly simple pump structure.
Eine einfache und wenig sichtbare Konstruktion wird geschaffen, wenn das obere Ende des Gehäuses unterhalb der Wasseroberfläche liegt und eine Einlassöffnung bildet, die durch eine gelochte Fläche insbesondere durch ein Lochblech oder ein Sieb abgedeckt ist.A simple and invisible construction is created when the upper end of the housing is below the water surface and an inlet opening forms, which is covered by a perforated surface, in particular by a perforated plate or a sieve.
Vorzugsweise wird vorgeschlagen, dass der Motor insbesondere als Elektromotor oberhalb der Hohlwelle angeordnet ist und die Motorenabtriebswelle direkt oder über ein Getriebe mit der Hohlwelle verbunden ist. Von Vorteil ist auch, wenn der Belüfter auf der Wasseroberfläche schwimmt.It is preferably proposed that the motor is arranged above the hollow shaft, in particular as an electric motor, and that the motor output shaft is connected to the hollow shaft directly or via a gear. It is also an advantage if the aerator floats on the water surface.
Eine umweltfreundliche Betriebsweise wird erreicht, wenn an den Elektromotor Sonnenzellen oder eine Windkraftanlage angeschlossen ist/sind. Um ein Aufwühlen von Schlamm am Grund des Gewässers zu verhindern, wird vorgeschlagen, dass unterhalb des Belüfters eine Fläche schräg zu der nach unten austretenden Strömung angeordnet insbesondere befestigt ist, auf die die Strömung trifft und ur Seite abgelenkt wird. Vorzugsweise wird vorgeschlagen, wenn die Drehrichtung des Elektromotors und des Laufrades kurzzeitig umgekehrt wird, um die Wassereinlassöffnungen zu reinigen.Environmentally friendly operation is achieved if solar cells or a wind turbine are / are connected to the electric motor. In order to prevent a build-up of sludge at the bottom of the water, it is proposed that a surface is arranged below the aerator, in particular attached obliquely to the downward flow, which the flow meets and is deflected to the side. It is preferably proposed if the direction of rotation of the electric motor and the impeller is briefly reversed in order to clean the water inlet openings.
Vier Ausführungsbeispiele der Erfindung sind in den Zeichnungen schematisch dargestellt und werden im folgenden näher beschrieben. Es zeigenFour exemplary embodiments of the invention are shown schematically in the drawings and are described in more detail below. Show it
Figur 1 ein erstes Ausführungsbeispiel mit einer angetriebenen luftführendenFigure 1 shows a first embodiment with a driven air duct
Hohlwelle auf der außen das Laufrad befestigt ist;Hollow shaft on which the impeller is attached on the outside;
Figur 2 eine angetriebene Hohlwelle mit Laufrad, die das still stehende luftführende Rohr koaxial umgibt,FIG. 2 shows a driven hollow shaft with an impeller, which coaxially surrounds the stationary air-carrying tube,
Figur 3 eine dritte Ausführung mit seitlich eingeführtem Luftrohr undFigure 3 shows a third embodiment with a laterally inserted air tube and
Figur 4 eine vierte Ausführung mit einer nicht angetriebenen Hohlwelle.Figure 4 shows a fourth embodiment with a non-driven hollow shaft.
Beim Ausführungsbeispiel nach Figur 1 ist ein zylindrisches Gehäuse 1 zum großen Teil in ein Gewässer so eingelassen, dass nur etwa ein Viertel des Gehäuses über die Wasseroberfläche 2 hinaus steht. Hierbei steht die Achse des Gehäuses 1 senkrecht und innerhalb des Gehäuses ist ein Luftrohr 3 koaxial angeordnet und an der Antriebswelle 4 eines Elektromotors 5 befestigt, der oberhalb des Gehäuses angeordnet ist. Das Rohr 3 bildet damit eine Hohlwelle die über die Wasseroberfläche hinausragt und oben Lufteinlässe 6 besitzt. Zwischen dem Rohr 3 und dem Gehäuse 1 besteht ein Ringraum 1a.In the exemplary embodiment according to FIG. 1, a cylindrical housing 1 is largely let into a body of water in such a way that only about a quarter of the housing projects beyond the water surface 2. Here, the axis of the housing 1 is vertical and within the housing an air tube 3 is arranged coaxially and on the drive shaft 4 of an electric motor 5, which is arranged above the housing. The tube 3 thus forms a hollow shaft which projects above the water surface and has air inlets 6 at the top. An annular space 1a exists between the tube 3 and the housing 1.
An der Außenseite des luftführenden Rohres 3 ist koaxial ein Laufrad 7 befestigt, das ein Axiallaufrad oder ein Schraubenlaufrad ist, dessen Flügel mit ihrem äußeren Ende nahe der Innenwand des Gehäuses 1 liegen, so dass bei einem Drehen des Rohres 3 und damit des Laufrades 7 durch den Motor 5 Wasser über die Wassereinlässe 8 angesaugt und nach unten an das untere Ende des Gehäuses 1 gedrückt wird. Das Wasser tritt aus dem unteren Wasserauslaß 9 des Gehäuses 1 senkrecht aus. Stattdessen kann aber auch das Wasser unten schräg austreten. Dies geschieht entweder dadurch, dass das Gehäuse 1 mit seiner Achse schräg im Wasser angeordnet ist und damit auch der Wasserauslass 9 schräg ist und/oder unterhalb des Auslasses 9 ist eine Fläche (Ablenkscheibe, Prellscheiben) schräg zum ausströmenden Wasser befestigt, um bei niedrigen Gewässern ein Aufwühlen von Schlamm zu verhindern.On the outside of the air-guiding tube 3, an impeller 7 is fastened coaxially, which is an axial impeller or a screw impeller, the wings of which are located with their outer ends near the inner wall of the housing 1, so that when the tube 3 and thus the impeller 7 rotate the engine 5 water is sucked in through the water inlets 8 and pressed down onto the lower end of the housing 1. The water emerges vertically from the lower water outlet 9 of the housing 1. Instead, the water can also emerge at an angle at the bottom. This is done either by the fact that the housing 1 is arranged with its axis at an angle in the water and thus the water outlet 9 is also at an angle and / or below the outlet 9 a surface (baffle plate, baffle plates) is attached at an angle to the outflowing water, in order to avoid low water to prevent mud from churning.
Im Bereich des Wasserauslaßes 9 endet auch das luftführende Rohr 3 mit seinem koaxialen Luftauslaß 10. Das Wasser tritt damit aus dem ringförmigen Wasserauslass 9 aus, der den Lauftauslaß 10 umgibt, wodurch das Wasser Luft aus dem Rohr 10 heraussaugt und im Wasser feinst verwirbelt und verteilt.In the area of the water outlet 9, the air-carrying pipe 3 also ends with its coaxial air outlet 10. The water thus emerges from the annular water outlet 9, which surrounds the running outlet 10, as a result of which the water sucks air out of the pipe 10 and finely swirls and distributes it in the water ,
Das Ausführungsbeispiel nach Figur 2 unterscheidet sich von dem ersten dadurch, dass das Rohr 3 still steht und von einer Hohlwelle 11 koaxial im oberen Bereich umgeben ist, die von der Antriebswelle 4 des Motors 5 angetrieben wird. Das Laufrad 7 ist nicht auf dem Rohr 3 sondern außen auf der Hohlwelle 11 befestigt. Im übrigen ist die Funktion die gleiche, wie bei Ausführungsbeispiel nach Figur 1.The exemplary embodiment according to FIG. 2 differs from the first in that the tube 3 stands still and is surrounded coaxially in the upper region by a hollow shaft 11 which is driven by the drive shaft 4 of the motor 5. The impeller 7 is not fixed on the tube 3 but on the outside on the hollow shaft 11. Otherwise, the function is the same as in the exemplary embodiment according to FIG. 1.
Das dritte Ausführungsbeispiel nach Figur 3 unterscheidet sich von den vorherigen dadurch, dass das luftführende Rohr 3 im oberen Bereich nicht koaxial, sondern seitlich angeordnet ist und unterhalb des Laufrades in das Innere des Gehäuses unterhalb des Laufrads geführt ist um wiederum mittig im Wasserauslaß 9 zu enden. Das Laufrad 7 ist direkt an der Antriebswelle insbesondere über eine Wellenverlängerung befestigt.The third exemplary embodiment according to FIG. 3 differs from the previous one in that the air-guiding tube 3 is not arranged coaxially in the upper area but laterally and is guided below the impeller into the interior of the housing below the impeller in order to again end in the middle in the water outlet 9 , The impeller 7 is attached directly to the drive shaft, in particular via a shaft extension.
Beim vierten Ausführungsbeispiel nach Fig. 4 ist das Gehäuse 1 vollständig untergetaucht und die Motorenabtriebswelle 4 verläuft nach unten und an ihrem unteren Ende ist das Laufrad 7 befestigt. Die Welle 4 ist von einem Rohr 3 koaxial umgeben, dessen Innendurchmesser größer ist als der Durchmesser der Welle 4, so dass zwischen Welle und Rohr ein Ringraum 12 besteht, der oben einen Lufteinlass 6 oberhalb der Wasseroberfläche 2 insbesondere nahe des Motors 5 bildet. Das untere Ende des Ringraums 12 mündet in der Nabe 13 des Laufrades 7 und ist mit dem Luftauslass 10 der Nabe 13 über Kanäle insbesondere Bohrungen 14 in der Nabe verbunden.In the fourth exemplary embodiment according to FIG. 4, the housing 1 is completely immersed and the motor output shaft 4 runs downward and the impeller 7 is fastened at its lower end. The shaft 4 is coaxially surrounded by a tube 3, the inside diameter of which is larger than the diameter of the shaft 4, so that between the shaft and the tube there is an annular space 12 which forms an air inlet 6 above the water surface 2, in particular near the motor 5. The lower end of the annular space 12 opens into the hub 13 of the impeller 7 and is connected to the air outlet 10 of the hub 13 via channels, in particular bores 14 in the hub.
Das Gehäuse 1 bildet mit seinem sich nach oben konisch erweiternden oberen Ende eine ringförmige Einlassöffnung 1 b, die unterhalb der Wasseroberfläche 2 liegt und von einem konischen Lochblech 8 oder Sieb bedeckt ist. Damit die Einlassöffnungen 6 insbesondere des Lochblechs/Sieb gesäubert werden, wird der Elektromotor 5 kurzzeitig in umgekehrter Drehrichtung gefahren, wodurch das Laufrad Wasser von unten nach oben durch das Gehäuse pumpt.The housing 1 forms with its upwardly conically widening upper end an annular inlet opening 1 b, which lies below the water surface 2 and is covered by a conical perforated plate 8 or sieve. So that the inlet openings 6, in particular of the perforated plate / sieve, are cleaned, the electric motor 5 is briefly driven in the opposite direction of rotation, as a result of which the impeller pumps water through the housing from the bottom to the top.
Der Elektromotor ist vorzugsweise an elektrischen Strom erzeugenden Sonnenzellen oder an einer Strom erzeugenden Windkraftanlage angeschlossen.The electric motor is preferably connected to solar cells generating electricity or to a wind turbine generating electricity.
In allen vier Ausführungen wird eine optimale Einbringung von Luft in das Wasser des Gewässers erreicht. In den drei Figuren sind der Übersicht halber alle Befestigungsteile weggelassen. So ist nicht dargestellt, wie der Motor 5 am Gehäuse 1 befestigt und das Rohr 3 bzw. die Hohlwelle 11 gelagert sind. Hierzu werden übliche Mittel verwendet.In all four versions, an optimal introduction of air into the water of the water is achieved. For the sake of clarity, all fastening parts have been omitted from the three figures. It is not shown how the motor 5 is attached to the housing 1 and the tube 3 or the hollow shaft 11 are mounted. Common means are used for this.
In allen drei Ausführungsbeispielen kann der Belüfter so ausgeführt sein, dass er im Gewässer schwimmt und hierbei ein Teil des Gehäuses 1 über die Wasseroberfläche hinausragt, so dass der Lufteinlaß 6 stets oberhalb der Wasseroberfläche liegt. Der Behälter 1 kann auch im Wasser vollständig eingetaucht sein. Ist auch der Motor untergetaucht, so ist dafür zu sorgen, dass der Motor 5 wassergeschützt aufgebaut ist oder eine wasserschützende Hülle besitzt. In all three exemplary embodiments, the aerator can be designed such that it floats in the water and part of the housing 1 projects above the water surface, so that the air inlet 6 is always above the water surface. The container 1 can also be completely immersed in the water. If the motor is also submerged, it must be ensured that the motor 5 is constructed to be water-protected or has a water-protecting casing.

Claims

Ansprüche Expectations
1. Belüfter für Gewässer mit einem motorisch angetriebenen Pumpenlaufrad (7), dadurch gekennzeichnet, dass das Wasser fördernde Laufrad (7) ein Axiallaufrad oder Schraubenlaufrad ist, das in einem unten offenen im Gewässer befindlichen Gehäuse läuft, und dass im unteren Bereich des Gehäuses (1) ein Luft führendes Rohr (3) endet, aus dem die Wasserströmung Luft ansaugt.1. Aerator for water with a motor-driven pump impeller (7), characterized in that the water-promoting impeller (7) is an axial impeller or screw impeller that runs in a housing that is open at the bottom in the water, and that in the lower region of the housing ( 1) an air-guiding pipe (3) ends from which the water flow sucks in air.
2. Belüfter nach Anspruch 1, dadurch gekennzeichnet, dass die Flügel (7) auf einer vom Motor (5) angetriebenen Hohlwelle (3) befestigt sind, durch deren Innenraum direkt oder über ein im Innenraum liegendes axiales Rohr Luft durch die Wasserströmung angesaugt wird.2. Aerator according to claim 1, characterized in that the blades (7) are attached to a hollow shaft (3) driven by the motor (5), through the interior of which air is sucked in directly or via an axial tube lying in the interior through the water flow.
3. Belüfter nach Anspruch 2, dadurch gekennzeichnet, dass die Hohlwelle (3) lotrecht oder schräg zur Wasseroberfläche (2) angeordnet und von dem Gehäuse (1) umgeben ist, das mit der Hohlwelle (3) einen nach unten offenen Ringraum (1a) bildet, in dem die Pumpenflügel laufen, die das Wasser nach unten drücken.3. Aerator according to claim 2, characterized in that the hollow shaft (3) is arranged perpendicular or obliquely to the water surface (2) and is surrounded by the housing (1) which with the hollow shaft (3) has an annular space (1a) which is open at the bottom. in which the pump blades run, which push the water down.
4. Belüfter nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Ringraum (1a) sich an seinem unteren Ende verjüngt.4. Aerator according to claim 2 or 3, characterized in that the annular space (1a) tapers at its lower end.
5. Belüfter nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass im unteren Bereich des Gehäuses (1 ) die Luft führende Hohlwelle oder das die Luft führende Rohr (3) endet.5. Aerator according to one of the preceding claims, characterized in that the air-guiding hollow shaft or the air-guiding tube (3) ends in the lower region of the housing (1).
6. Belüfter nach Anspruch 1 , 4 oder 5, dadurch gekennzeichnet, dass unterhalb der Flügel (7) im Wasserstrom des Belüftungsgehäuses (1) ein Luft führendes Rohr (3) endet, das seitlich des Laufrades (7) nach oben über die Wasseroberfläche (2) läuft.6. aerator according to claim 1, 4 or 5, characterized in that below the wing (7) in the water flow of the ventilation housing (1) an air leading pipe (3) ends, which runs to the side of the impeller (7) up over the water surface (2).
7. Belüfter nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das obere Ende des Gehäuses (1 ) unterhalb der Wasseroberfläche (2) liegt und eine Einlassöffnung (1b) bildet, die durch eine gelochte Fläche insbesondere durch ein Lochblech (8) oder ein Sieb abgedeckt ist.7. Aerator according to one of the preceding claims, characterized in that the upper end of the housing (1) lies below the water surface (2) and forms an inlet opening (1b) through a perforated surface, in particular through a perforated plate (8) or a Strainer is covered.
8. Belüfter nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Motor (5) insbesondere als Elektromotor oberhalb der Hohlwelle (3) angeordnet ist und die Motorenabtriebswelle direkt oder über ein Getriebe mit der Hohlwelle verbunden ist.8. Aerator according to one of the preceding claims, characterized in that the motor (5) is arranged in particular as an electric motor above the hollow shaft (3) and the motor output shaft is connected directly or via a gearbox to the hollow shaft.
9. Belüfter nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Belüfter auf der Wasseroberfläche schwimmt.9. Aerator according to one of the preceding claims, characterized in that the aerator floats on the water surface.
10. Belüfter nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass an den Elektromotor (5) Sonnenzellen oder eine Windkraftanlage angeschlossen ist/sind.10. Aerator according to one of the preceding claims, characterized in that solar cells or a wind turbine are / are connected to the electric motor (5).
11. Belüfter nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass unterhalb des Belüfters eine Fläche schräg zu der nach unten austretenden Strömung angeordnet insbesondere befestigt ist, auf die die Strömung trifft und zur Seite abgelenkt wird.11. Aerator according to one of the preceding claims, characterized in that below the aerator a surface is arranged obliquely to the downward flowing flow, in particular fastened, which meets the flow and is deflected to the side.
12. Verfahren zum Betrieb eines Belüfters nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Drehrichtung des Elektromotors (5) und des Laufrades kurzzeitig umgekehrt wird, um die Wassereinlassöffnungen zu reinigen. 12. A method of operating an aerator according to one of the preceding claims, characterized in that the direction of rotation of the electric motor (5) and the impeller is briefly reversed in order to clean the water inlet openings.
PCT/EP2002/007942 2001-07-28 2002-07-17 Aerator for bodies of water WO2003011774A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10136930.1 2001-07-28
DE10136930 2001-07-28
DE2001154396 DE10154396A1 (en) 2001-07-28 2001-11-06 Aerators for water
DE10154396.4 2001-11-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103204592A (en) * 2013-04-19 2013-07-17 郏松筠 Water body aeration and oxygen-increasing device with low power consumption and high efficiency
FR3027823A1 (en) * 2014-11-04 2016-05-06 Jean-Pierre Grasa DEVICE FOR AGITATING WASTEWATER IN AN AEROBIC OR ANOXIC WATER TREATMENT BASIN, BASIN, AND METHOD
CN105875482A (en) * 2016-04-14 2016-08-24 龙卫东 Wind wheel type aerator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE908968C (en) * 1951-08-13 1954-04-12 Pista S A Fumigation device for liquids
DE2408794A1 (en) * 1974-02-23 1975-09-04 Koppers Gmbh Heinrich Aerator for sewage or pond water with submerged rotor - has downward circulating pipes arranged coaxially with motor driving shaft
FR2758094A1 (en) * 1997-01-08 1998-07-10 Alain Boulant DEVICE FOR BREWING AND AERATING A LIQUID AND FOR REMOVING FOAM IN A LIQUID TREATMENT TANK
WO1998042981A1 (en) * 1997-03-25 1998-10-01 Alfred Wilhelm Wind and solar energy installation
FR2798602A1 (en) * 1999-09-21 2001-03-23 Raymond Berchotteau Aeration and circulation system for e.g. open- or waste waters, includes bell-shaped annular intake accelerating water to improve air distribution

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE908968C (en) * 1951-08-13 1954-04-12 Pista S A Fumigation device for liquids
DE2408794A1 (en) * 1974-02-23 1975-09-04 Koppers Gmbh Heinrich Aerator for sewage or pond water with submerged rotor - has downward circulating pipes arranged coaxially with motor driving shaft
FR2758094A1 (en) * 1997-01-08 1998-07-10 Alain Boulant DEVICE FOR BREWING AND AERATING A LIQUID AND FOR REMOVING FOAM IN A LIQUID TREATMENT TANK
WO1998042981A1 (en) * 1997-03-25 1998-10-01 Alfred Wilhelm Wind and solar energy installation
FR2798602A1 (en) * 1999-09-21 2001-03-23 Raymond Berchotteau Aeration and circulation system for e.g. open- or waste waters, includes bell-shaped annular intake accelerating water to improve air distribution

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103204592A (en) * 2013-04-19 2013-07-17 郏松筠 Water body aeration and oxygen-increasing device with low power consumption and high efficiency
CN103204592B (en) * 2013-04-19 2014-07-09 郏松筠 Water body aeration and oxygen-increasing device with low power consumption and high efficiency
WO2014169622A1 (en) * 2013-04-19 2014-10-23 Jia Songyun Low-power consumption and high-efficiency water body aeration and oxygenation device
FR3027823A1 (en) * 2014-11-04 2016-05-06 Jean-Pierre Grasa DEVICE FOR AGITATING WASTEWATER IN AN AEROBIC OR ANOXIC WATER TREATMENT BASIN, BASIN, AND METHOD
CN105875482A (en) * 2016-04-14 2016-08-24 龙卫东 Wind wheel type aerator
CN105875482B (en) * 2016-04-14 2019-01-04 龙卫东 A kind of wind wheel type aerator

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