WO2003011774A1 - Aerateur pour cours d'eau - Google Patents

Aerateur pour cours d'eau 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
Authority
WO
WIPO (PCT)
Prior art keywords
water
impeller
air
housing
aerator
Prior art date
Application number
PCT/EP2002/007942
Other languages
German (de)
English (en)
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/de
Application filed by Moeller Gerhard filed Critical Moeller Gerhard
Publication of WO2003011774A1 publication Critical patent/WO2003011774A1/fr

Links

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

La présente invention concerne un aérateur pour cours d'eau comprenant une roue de pompe motorisée (7). La roue (7) transportant l'eau est une roue axiale ou une roue hélicoïdale qui fonctionne dans un boîtier (1) ouvert vers le bas, qui se trouve dans le cours d'eau. Un tube (3) conduisant de l'air débouche dans la zone inférieure du boîtier et le courant d'eau aspire de l'air depuis ce tube. La présente invention concerne également un procédé pour faire fonctionner un aérateur. Le sens de rotation du moteur électrique et de la roue est temporairement inversé afin de nettoyer les orifices d'admission d'eau.
PCT/EP2002/007942 2001-07-28 2002-07-17 Aerateur pour cours d'eau WO2003011774A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10136930.1 2001-07-28
DE10136930 2001-07-28
DE2001154396 DE10154396A1 (de) 2001-07-28 2001-11-06 Belüfter für Gewässer
DE10154396.4 2001-11-06

Publications (1)

Publication Number Publication Date
WO2003011774A1 true WO2003011774A1 (fr) 2003-02-13

Family

ID=26009800

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/007942 WO2003011774A1 (fr) 2001-07-28 2002-07-17 Aerateur pour cours d'eau

Country Status (1)

Country Link
WO (1) WO2003011774A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103204592A (zh) * 2013-04-19 2013-07-17 郏松筠 一种低功耗高效的水体曝气增氧装置
FR3027823A1 (fr) * 2014-11-04 2016-05-06 Jean-Pierre Grasa Dispositif d'agitation d'eaux usees dans un bassin de traitement aerobie ou anoxique des eaux usees, bassin, et procede
CN105875482A (zh) * 2016-04-14 2016-08-24 龙卫东 一种风轮式增氧机
CN108541682A (zh) * 2018-04-16 2018-09-18 农业部南京农业机械化研究所 一种二级气流辅助式电动喷雾器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE908968C (de) * 1951-08-13 1954-04-12 Pista S A Begasungsvorrichtung fuer Fluessigkeiten
DE2408794A1 (de) * 1974-02-23 1975-09-04 Koppers Gmbh Heinrich Belueftungs- bzw. begasungsvorrichtung
FR2758094A1 (fr) * 1997-01-08 1998-07-10 Alain Boulant Dispositif de brassage et d'aeration d'un liquide et d'elimination de la mousse dans une cuve de traitement de ce liquide
WO1998042981A1 (fr) * 1997-03-25 1998-10-01 Alfred Wilhelm Installation a energie eolienne et solaire
FR2798602A1 (fr) * 1999-09-21 2001-03-23 Raymond Berchotteau Dispositif de mise en circulation d'un liquide pour la diffusion d'un gaz

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE908968C (de) * 1951-08-13 1954-04-12 Pista S A Begasungsvorrichtung fuer Fluessigkeiten
DE2408794A1 (de) * 1974-02-23 1975-09-04 Koppers Gmbh Heinrich Belueftungs- bzw. begasungsvorrichtung
FR2758094A1 (fr) * 1997-01-08 1998-07-10 Alain Boulant Dispositif de brassage et d'aeration d'un liquide et d'elimination de la mousse dans une cuve de traitement de ce liquide
WO1998042981A1 (fr) * 1997-03-25 1998-10-01 Alfred Wilhelm Installation a energie eolienne et solaire
FR2798602A1 (fr) * 1999-09-21 2001-03-23 Raymond Berchotteau Dispositif de mise en circulation d'un liquide pour la diffusion d'un gaz

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103204592A (zh) * 2013-04-19 2013-07-17 郏松筠 一种低功耗高效的水体曝气增氧装置
CN103204592B (zh) * 2013-04-19 2014-07-09 郏松筠 一种低功耗高效的水体曝气增氧装置
WO2014169622A1 (fr) * 2013-04-19 2014-10-23 Jia Songyun Dispositif d'aération et d'oxygénation d'un volume d'eau à faible consommation de puissance et haut rendement
FR3027823A1 (fr) * 2014-11-04 2016-05-06 Jean-Pierre Grasa Dispositif d'agitation d'eaux usees dans un bassin de traitement aerobie ou anoxique des eaux usees, bassin, et procede
CN105875482A (zh) * 2016-04-14 2016-08-24 龙卫东 一种风轮式增氧机
CN105875482B (zh) * 2016-04-14 2019-01-04 龙卫东 一种风轮式增氧机
CN108541682A (zh) * 2018-04-16 2018-09-18 农业部南京农业机械化研究所 一种二级气流辅助式电动喷雾器

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