WO2011071925A1 - Agent d'entraînement de fluides - Google Patents

Agent d'entraînement de fluides Download PDF

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Publication number
WO2011071925A1
WO2011071925A1 PCT/US2010/059289 US2010059289W WO2011071925A1 WO 2011071925 A1 WO2011071925 A1 WO 2011071925A1 US 2010059289 W US2010059289 W US 2010059289W WO 2011071925 A1 WO2011071925 A1 WO 2011071925A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
fluid driver
aperture
blade
tube
Prior art date
Application number
PCT/US2010/059289
Other languages
English (en)
Inventor
Hassan Mohajer
Original Assignee
Hassan Mohajer
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
Application filed by Hassan Mohajer filed Critical Hassan Mohajer
Publication of WO2011071925A1 publication Critical patent/WO2011071925A1/fr

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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
    • 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
    • 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
    • B01F23/2335—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 direction of introduction of the gas relative to the stirrer
    • B01F23/23354—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 direction of introduction of the gas relative to the stirrer the gas being driven away from the rotating stirrer
    • 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
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • 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
    • B01F23/233—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
    • B01F23/23367—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 behind the stirrer
    • 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 present invention generally relates to a fluid driver. More specifically, the present invention is directed to a fluid driver device operable to aerate a fluid medium and to compress gas.
  • the fluid driver includes a rotatable tube having an open end and a closed end.
  • An aperture is disposed along a length of the tu be and is associated with a blade configured to create a reduced pressure pocket within a fluid medium near the aperture when the tube, the aperture and the blade rotate within the fluid medium.
  • the reduced pressure pocket draws an input gas through the open end of the tube and into the fluid medium through the aperture to aerate the fluid medium.
  • the blade may extend outwardly along a leading edge of the aperture.
  • the blade at least partially extends over the aperture and is circumferentially associated therewith.
  • the tube itself may include multiple apertures disposed along its length.
  • each aperture should include an associated blade, or may include mu ltiple blades associated therewith.
  • the fluid driver may include a housing that encompasses the aperture and the blade and is at least partially disposed within the fluid medium. The housing is positioned to trap foam formed as a result of the input gas entering the fluid medium through the aperture.
  • a gas separator may be cou pled to the tube and positioned within the housing to rotatably contact the foam trapped by the housing.
  • the gas separator itself may be a wire or a brush.
  • the housing should include a vent whereby gas separated from the foam is able to escape out from the housing.
  • the fluid driver may reside within a container housing the fluid medium. If the container is open to the atmosphere, the fluid driver provides aeration. Alternatively, if the container is closed to the
  • the fluid driver provides aeration and compresses the input gas therein.
  • the fluid driver may be used in an embodiment wherein mu ltiple closed containers are coupled to the tu be in series with one another.
  • the tube is configu red to selectively receive compressed gas from one closed container for su bsequent injection into the fluid maxim m of the next closed container in the series.
  • the gas is increasingly compressed as it passes through subsequent closed containers in the series. This occurs because the relatively lighter gas separates from the heavier fluid medium. As such, the gas tends to rise to the top of the container while the heavier fluid medium settles on the lower portion of the container.
  • the blade rotates in the same rotational direction of the tube.
  • FIGURE 1 is a perspective view of a fluid driver in accordance with the embodiments disclosed herein;
  • FIGU RE 2 is a cross-sectional view of the flu id d river d i sposed with i n a pai r of closed contai ners;
  • FIGURE 3 is a cross-sectional view of the fluid driver and an associated gas separator
  • FIGURE 4 is an alternative perspective view of the fluid driver, illustrating an additional blade and a pair of turbulence rings.
  • the fluid driver of the present invention is generally referred to in FIGURE 1 by reference number 1 0.
  • the fluid driver 1 0 can be used as an aerator or a gas compressor.
  • the fluid driver 1 0 can also be used in a single-stage or multi-stage configuration as described in more detail below.
  • the fluid driver 1 0 When used as an aerator, the fluid driver 1 0 is capable of releasing air bubbles in a liquid or fluid medium, thereby resulting in higher aeration.
  • the simple structure of the fluid driver 1 0 requires no lubricant and is, therefore, maintenance friendly. As a result, the fluid driver 1 0 consumes less energy than existing aeration or compression devices.
  • the fluid driver 1 0 works based on the relative velocity of a fluid relative to an aperture/blade combination, as described in detail below.
  • rotating the fluid driver 1 0 it is possible to maintain the fluid driver 1 0 in a stationary position and rotate the liquid su rrounding the fluid driver 1 0. Additionally, it is possible to rotate both the fluid driver 1 0 and any container housing the fluid medium in opposite directions to obtain better performance.
  • the fluid driver 1 0 is a generally elongated and cylindrical pipe 1 2 that includes one or more apertures 1 4 disposed about the pipe 1 2.
  • the apertu res 1 4 may be formed out of any shape, i.e. round, square, triangular, etc.
  • the aperture 1 4 may be an open crack or another similar structure.
  • the aperture 1 4 is preferably at least partially circumferentially encompassed by a blade 1 6 that extends out and away from the surface of the pipe 1 2.
  • the blade 1 6 may be formed as part of the aperture 1 4 itself.
  • the thickness of the pipe 1 2, out of which the aperture 1 4 is formed serves as the blade 1 6.
  • the blade 1 6 causes agitation when the fluid driver 1 0 is placed within a flu id medium and rotated.
  • the blade 1 6 is preferably designed to produce more turbulence to facilitate aeration and displacement of, e.g., bacteria or oxygen in the fluid medium.
  • the blade 16 depicted in FIG. 1 extends over the aperture 14 to partially encase or cover the aperture 14.
  • the blade 16 works in conjunction with the aperture 14 to form a reduced pressure pocket near the opening of the aperture 14 to generate a vacuum within the interior of the pipe 12 to draw gas through the aperture 14 and into the fluid medium.
  • the pipe 12 has an open end 18 and a closed end 20.
  • the open end 18 mounts to the shaft of a motor 22.
  • the motor 22 is designed to rotate the pipe 12 such that the blade 16 and the aperture 14 may facilitate agitation of a fluid medium 24.
  • the blade 16 and the aperture 14 draw an input gas 26 (denoted by the arrow in FIG.2) into the pipe 12 for dispersion out into the fluid medium 24 through the aperture 14.
  • an input gas 26 denoted by the arrow in FIG.2
  • the blade 16 is shown formed flush around the external curvature of the pipe 12 and partially extends up, outward and over a portion of the aperture 14 in a cup-type position designed to agitate the fluid medium 24 when the pipe 12 rotates.
  • the pipe 12 preferably rotates according to the directional arrow shown in FIG. 1 - the blade 16 rotates in the same rotational direction as the pipe 12. This allows the fluid medium 24 to travel up along a back surface 28 of the blade 16 to permit relatively resistance- free rotation of the pipe 12 within the fluid medium 24 compared to rotation of the blade 16 in an opposite rotational direction as the pipe 12. If the pipe 12 were to rotate in the opposite direction of the arrows depicted in FIG.
  • the fluid anterior m 24 would get caught up underneath the blade 1 6 and tend to enter the interior of the pipe 1 2 th rough the aperture 1 4 as water wou ld be cupped and caught within the space between the blade 1 6 and the aperture 1 4.
  • fluid in the fluid medium 24 is displaced as it encounters the back surface 28 of the blade 1 6. This causes the fluid to increase in speed as it eclipses the outer perimeter of the blade 1 6 and flows over the aperture 1 4.
  • the increased speed across the back surface 28 creates a vacuum or a reduced pressure pocket near the space immediately above the aperture 1 4, similar to a vacuum that is created with an airplane wing.
  • the blade 1 6 is preferably situated next to the leading boundary of the aperture 1 4 with respect to the direction of rotation of the pipe 1 2.
  • FIGURE 2 illustrates the pipe 1 2 disposed within an upper container 30 and a lower container 32.
  • the two containers 30, 32 in FIG. 2 are shown as a sample embodiment.
  • the fluid driver 1 0 may be used in conjunction with a single open container, a single closed container, or a plurality of containers placed end-to-end in series, such as the upper container 30 and the lower container 32.
  • the open end 1 8 of the pipe 1 2 is inserted into the container such that the aperture 1 4 and the blade 1 6 are immersed within the fluid medium 24 and positioned to receive the input gas 26.
  • the closed end 20 merely extends out from within the fluid medium 24, and may even extend out from within the container.
  • the primary purpose of using the fluid driver 1 0 with an open container is to aerate the flu id medium 24.
  • the fluid driver 1 0 is used in conjunction with a single closed container, such as either one of containers 30 or 32, the fluid driver 1 0 is used to aerate the fluid medium 24 and to compress the input gas 26 therein.
  • the closed end 20 may simply reside within the interior of the closed container, extend up into a portion of the wall forming the closed container, or extend up and out of the closed container, as is shown with respect to the container 30 in FIG. 2.
  • the pipe 1 2 must be sealed to the walls of the closed container such that the input gas can be compressed therein.
  • the input gas 26 is drawn up into the pipe 1 2 as the motor 22 rotates the pipe 1 2 to create the aforementioned reduced pressure pocket near the su rface of the aperture 1 4.
  • the input gas 26 enters the pipe 1 2 through the open end 1 8 as generally shown in FIG. 2.
  • the reduced pressure pocket in the immediate vicinity of the aperture 1 4 draws the input gas 26 in through the pipe 1 2.
  • the input gas 26 within the pipe 1 2 is urged through the aperture 1 4 and into the fluid medium 24. Agitation and the natural buoyancy of the input gas 26 encourage dispersion of small gas bubbles throughout the fluid medium 24.
  • Dispersion can be further facilitated, and the output optimized, by placement of one of more of the blades 1 6 along the length of the pipe 1 2 in the fluid medium 24. If more than one aperture 1 4 is used, each aperture preferably includes an associated blade 1 6. The addition of multiple
  • aperture/blade combinations enhances the amount of the input gas 26 drawn into the pipe 1 2 and dispersed into the flu id medium 24.
  • the apertures 1 4 may include multiple blades 1 6 disposed about or flanking the exterior of the aperture 1 4. Additionally, the pipe 1 2 may include one or more of the blades 1 6 disposed along its length and not associated with one of the apertures 1 4. In this embodiment, the blades 1 6 are designed to agitate the fluid medium 24 to facilitate dispersion of the input gas 26 into the fluid medium 24.
  • the flu id driver 1 0, as briefly described above, may be disposed in a single-stage environment (i.e. one container) or in a multi-stage environment (i.e. multiple containers).
  • a single-stage environment i.e. one container
  • a multi-stage environment i.e. multiple containers
  • the fluid driver 1 0 aerates the fluid medium 24.
  • the container is closed to the atmosphere, not only does the fluid driver 1 0 aerate the fluid medium 24, but the gas therein collects and compresses in the space above the fluid medium 24.
  • FIG. 2 illustrates a dual-stage compressor 34.
  • the dual-stage compressor 34 may be expanded to include three or more containers in series, depending on the desired level of compression of the gas therein. Accordingly, the dual-stage compressor 34 shown in FIG. 2 is capable of compressing gas within each stage or container. Specifically, the input gas 26 enters the pipe 1 2 through the open end 1 8 of the fluid driver 1 0. The input gas 26 disperses into the fluid maxim m 24 through the respective apertures 1 4. The input gas 26 is relatively lighter than the fluid medium 24. Thus, as the input gas 26 enters the lower container 32, it generally tends to aerate th rough the fluid medium 24 into an air space 36 above the fluid medium 24.
  • the heavier fluid medium 24 makes up the lower part of the lower container 32 and the lighter compressed input gas occupies the upper region of the lower container 32 - namely the air space 36.
  • Compressed gas in the air space 36 then re-enters the pipe 1 2 through an input valve 38 and serves as an input gas for the upper container 30.
  • the aeration and compression process repeats itself within a second stage of the dual- stage compressor - i.e. in the upper container 30.
  • the compressed gas for one stage or container becomes the input or source gas for the next stage or container.
  • the effectiveness of aeration and compression is thereby multiplied with each succeeding container in series along the length of the fluid driver 1 0.
  • the fluid driver 1 0 has other applications in addition to aeration or compression of gas in a fluid medium or wastewater application.
  • the fluid driver 1 0 may be utilized in a water recycling system wherein chemicals dispersed in a liquid attach to air bubbles and rise to the surface. Such separation is useful, for example, in the mining industry, such as mining copper, where it is desirable to purify and isolate certain chemicals.
  • the fluid driver 1 0 is also useful as a mixer/circulator. For example, rising air bubbles stimulate the boiling process resulting in greater circulation that facilitates mixing.
  • Other applications include using the fluid driver 1 0 as an emulsifier/ homogenizer for dissimilar liquids such as oil and water.
  • the open end 1 8 of the pipe 1 2 is inserted into the fluid medium 24 so a liquid such as oil can be drawn into the pipe 1 2 by the reduced pressure pocket created by the aperture/blade combination.
  • This oil is subsequently injected into the flu id medium 24 through the aperture 1 4 and further mixed therein through agitation by the blade 1 6. Repetition of this process eventually results in a homogenized emulsion.
  • the fluid driver 1 0 may also be deployed with a housing 40 that generally encompasses the aperture 1 4 and the blade 1 6, as shown in FIGURE 3. Similar to the embodiment described with respect to FIG. 2 , the input gas 26 enters the pipe 1 2 and is dispersed into the fluid medium 24 through the
  • the housing 40 which is designed to facilitate the separation of the in put gas 26 from the fluid medium 24. This is accomplished by positioning the housing 40 around the exterior portion of the pipe 1 2 near the open end 1 8.
  • the housing 40 includes a cylindrical casing 42 extending away from the pipe 1 2 at an angle to ensure that the fluid medium 24 remains free flowing therein.
  • the cylindrical casing 42 forms a chamber 44 surrounding the exterior of the pipe 1 2.
  • the casing 42 provides clearance for rotation of a gas separator 46 within the chamber 44.
  • the gas separator 46 is designed to breakdown a foam 48 that forms within the chamber 44 as a result of the input gas 26 entering the fluid medium 24 through the apertures 1 4.
  • the mixture of the input gas 26 and the fluid medium 24 that makes up the foam 48 contacts an interior surface 50 of the casing 42.
  • Heavier fluid travels down along the side of the interior surface 50 as denoted by the directional arrows therein . This fluid eventually makes its way back into the fluid medium 24 in the open container 52.
  • This particular function causes constant circulation of the fluid medium 24 and replenishes the fluid maxim m 24 with a constant supply of the input gas 26 through such movement. This is highly desirable to aerate nutrients and oxygen through the fluid medium 24.
  • the purpose of the gas separator 46 is to breakdown the foam 48 that forms as a result of the input gas 26 mixing with the fluid medium 24 within the chamber 44.
  • the gas separator 46 rotates along with the pipe 1 2 and aides in separating heavier fluids from the gas such that the heavy fluid is recycled back into the fluid medium 24 and the gas escapes from the housing 40 through a vent 54 therein . This process is further facilitated by the fact that the rotating pipe 1 2 and the gas separator 46 exert a centrifugal force on the combination of the input gas 26, the fluid medium 24 and the foam 48 within the chamber 44. Additionally, the angled nature of the gas separator 46 urges the foam 48 downwardly into the input gas 26 and the surface of the fluid medium 24.
  • the gas separator 46 may be in a relatively fixed vertical position (as shown in FIG. 3) or may be positioned anywhere between being perpendicu lar with the pipe 1 2 or parallel with the pipe 1 2. Additionally, the gas separator 46 may be in a non-fixed position offset relative to the pipe 1 2. In this embodiment, the position of the gas separator 46 may vary depending on the rotational speed of the pipe 1 2. Although, it is preferable that the gas separator 46 be positioned at an angle that forces any gas, liquid or other fluid (e.g. the foam 48) down into the fluid medium 24.
  • the housing 40 acts as a cone in combination with the gas separator 46 to ensure maximum aeration of the gas filled fluid medium 24 within the interior of the casing 42.
  • the gas separator 46 may include wires, blades, or brushes. The wires, blades or brushes all preferably attach to and rotate with the pipe 1 2.
  • Extensions destroy bubbles in the foam 48 to separate the gas from the fluid.
  • the wires may perform similarly as those wires that are used to cut or edge grass in a garden.
  • the bristles of the brush may generate more bubbles by agitating the surface of the fluid medium 24.
  • each of the various gas separators 46 are interchangeable with the pipe 1 2.
  • devices designed to agitate or disperse the foam 48 may attach to the pipe 1 2 as an accessory.
  • the input gas 26 may be injected into the fluid driver 1 0 by a pump, instead of simply being drawn therein by the reduced pressure pocket or vacuum.
  • This embodiment is particularly preferred so that additional gas may be injected into the fluid medium 24 that otherwise would not be injected through use of the vacuum or reduced pressure pocket created by the combination of the blade 1 6 and the aperture 1 4.
  • the container 52 may include blades or jets designed to circulate the fluid maxim m 24 therein to provide better aeration characteristics.
  • FIGURE 4 illustrates an alternative embodiment of the fluid driver 1 0, including a second blade 56 and a pair of turbulence rings 58. In this
  • the second blade 56 is mounted to a pair of bushings 60 that rotate freely relative to the pipe 1 2.
  • the bushings 60 may rotate the second blade 56 in an opposite direction of the pipe 1 2 to enhance the turbulence in and around the aperture 1 4 and the blade 1 6.
  • the second blade 56 may be fixedly mounted to the pipe 1 2.
  • the second blade 56 is designed to enhance the aeration of the fluid medium surrounding the fluid driver 1 0.
  • the second blade 56 is also designed to mix input gas with the surrounding fluid medium similar to the blade 1 6.
  • the fluid driver 1 0 includes on ly the second blade 56 connected to the bush ings 60.
  • the fluid driver 1 0 includes the turbulence rings 58 in addition to the second blade 56.
  • the turbulence rings 58 are disposed concentrically around the outside of the pipe 1 2 and are designed to circulate fluid therein and around the blade 1 6 and the aperture 1 4. Additional blades may be placed in series or in parallel with either the blade 1 6 or the second blade 56 to increase the turbulence in and around the aperture 1 4 or in the fluid medium in general.
  • the second blade 56 can be any shape, but is preferably designed to enhance circulation of the fluid medium when the fluid driver 1 0 is disposed therein. In a preferred embodiment, the second blade 56 is the same shape as the blade 1 6 to create a similar, if not the same, turbulence effect. Additionally, the second blade 56 includes an arc 62 that provides clearance over the blade 1 6 when the second blade 56 rotates in the opposite direction (or even the same direction) of the pipe 1 2.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

Dans un tube pouvant tourner ayant une extrémité ouverte et une extrémité fermée, une ouverture est disposée sur une longueur du tube et est associée à une lame conçue pour créer une poche de pression réduite à l'intérieur d'un milieu fluide près de l'ouverture. Lorsque le tube, l'ouverture et la lame tournent à l'intérieur du milieu fluide, un gaz d'injection est aspiré à travers l'extrémité ouverte du tube et dans le milieu fluide par l'ouverture.
PCT/US2010/059289 2009-12-07 2010-12-07 Agent d'entraînement de fluides WO2011071925A1 (fr)

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US26735609P 2009-12-07 2009-12-07
US61/267,356 2009-12-07

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WO2011071925A1 true WO2011071925A1 (fr) 2011-06-16

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WO (1) WO2011071925A1 (fr)

Citations (7)

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US3572661A (en) * 1968-04-04 1971-03-30 Mueller Hans Admixing of gaseous and liquid phases
US3976453A (en) * 1974-08-12 1976-08-24 Brown Kenard D Liquid vortex vacuum pump
US4399028A (en) * 1982-06-14 1983-08-16 The Black Clawson Company Froth flotation apparatus and method
US5314644A (en) * 1992-10-19 1994-05-24 Virginia Polytechnic Institute And State University Microbubble generator
US5800742A (en) * 1996-12-30 1998-09-01 Cheng; Mao-Chung Underwater air delivering device
US6126150A (en) * 1995-09-22 2000-10-03 Van Dyk; Bernhard Submersible mixing impeller
US7398963B2 (en) * 2004-06-21 2008-07-15 Hills Blair H Apparatus and method for diffused aeration

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572661A (en) * 1968-04-04 1971-03-30 Mueller Hans Admixing of gaseous and liquid phases
US3976453A (en) * 1974-08-12 1976-08-24 Brown Kenard D Liquid vortex vacuum pump
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