US3485484A - Device for the circulation and the aeration of fluids - Google Patents

Device for the circulation and the aeration of fluids Download PDF

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Publication number
US3485484A
US3485484A US3485484DA US3485484A US 3485484 A US3485484 A US 3485484A US 3485484D A US3485484D A US 3485484DA US 3485484 A US3485484 A US 3485484A
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US
United States
Prior art keywords
rotor
vanes
air
pulp
discs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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English (en)
Inventor
Francis J Quinchon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Venot Pic SA
Original Assignee
Venot Pic SA
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 Venot Pic SA filed Critical Venot Pic SA
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Publication of US3485484A publication Critical patent/US3485484A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/16—Flotation machines with impellers; Subaeration machines
    • 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
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1418—Flotation machines using centrifugal forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1493—Flotation machines with means for establishing a specified flow pattern
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/52—Mechanical actuating means with crank, eccentric, or cam
    • F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23314—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2335—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
    • B01F23/23352—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 moving perpendicular to the axis of rotation
    • 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
    • B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
    • B01F27/1155—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis with interconnected discs, forming open frameworks or cages
    • 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

  • Such devices are used, in particular in flotation processes, for circulating the pulp and introducing the air into it.
  • the rotor is a disc provided with ribs or a hub provided with blades.
  • the air required is introduced by cavitation created by the high-speed rotation of the rotor, at the cost of considerable consumption of energy for a given result without the proportion of the volume of air to the volume of pulp being necessarily appropriate to the needs of the flotation.
  • the rotor attached to a hollow shaft leading to the open air, has ducts open at one end in the shaft and at the other end on the periphery of the rotor.
  • the rotor Whose general shape is that of a circular disc in a plane perpendicular to the shaft, either has ribs at its surface or, at its periphery, a surface generally parallel to the axis of rotation comprising elements which are inclined in relation to a direction tangential to the movement of the rotor.
  • the ribs and, if necessary, the shape of the peripheric surface of the rotor create a depression around this moving body which sucks in the air necessary for the flotation.
  • the present invention relates to a rotor for flotation machines designed to remedy the above-mentioned disadvantages: this rotor is provided with vanes, disposed between two circular discs whose rational shape enables a large volume of pulp to be circulated for a low consumption of energy.
  • the vanes of this rotor are provided with ducts opening out at one end into the hollow shaft leading to the open air and at the other end to the periphery of the rotor.
  • the depression around the rotor is created by the speed of ejection of the pulp; the air is thus drawn in in large quantities and proportionally to the rate of input of the pulp. This arrangement ensures excellent flotation. The energy consumption is low, for the pulp circulates within the rotor without turbulence.
  • FIG. 1 is a vertical section through one embodiment of the invention taken along line 11--1 of FIG. 2;
  • FIG. 2 is a top plan view of the embodiment of FIG. 1 partially broken away along line 2-2 of FIG. 1;
  • FIG. 3 is a vertical section through an alternate embodiment of a vane of the present invention.
  • FIGS. 4 and 5 are top plan views of further alternate embodiments of the invention, partially broken away;
  • FIG. 6 is a vertical section through another embodiment of the invention taken along line 66-6 of FIG. 7;
  • FIG. 7 is a top plan view of the embodiment of FIG. 6 broken away along line 7-7 of FIG. 6.
  • the rotor according to FIGS. 1 and 2 comprises a hollow drive shaft 1, of which only lower part is shown, and whose central bore 2 communicates by way of the cavity 3 and the holes 4 with the ducts formed by the walls of the vanes 6 connecting the discs 7 and 8.
  • the upper disc has a central hole 9 which allows the pulp to circulate as shown by the arrow 10.
  • vanes and of the ducts must be designed for each particular case of flotation, depending on the characteristics of the pulp to be treated and the proportion of air desired.
  • the vanes and the ducts may be of shapes other than those represented in FIGS. 1 and 2, without going beyond the scope of the invention.
  • the gas ducts can have a diverging part 13 which improves the suction.
  • FIGS. 6 and 7 give a diagrammatic representation of an embodiment which conforms to the: invention, even though the layout of the ducts is different.
  • FIG. 6 is a section along the line 666 and FIG. 7 a plan view with a partial cutaway section along the line 77.
  • the arrow 14 shows the path followed by the pulp and the arrow 15 that of the air.
  • the ducts which are shown horizontal may be inclined and the hollow shaft may be replaced by a solid shaft in the center of a tube, creating an annular air feed space.
  • the device can be applied to the introduction of diverse gases into diverse fluids.
  • the suction created by the rotor according to the invention may be effected not only from the outside air but also from piping under pressure.
  • a device for circulating a fluid and for introducing therein a gas in increasing quantity in direct proportion to the fiow rate of the fluid comprising a hollow shaft and a rotor attached thereto, said rotor comprising two substantially flat discs mounted concentric with said shaft, a plurality of hollow vanes mounted between said flat discs and having substantially radially directed outlet orifices, one of said discs having an opening concentric with said shaft and immediately adjacent thereto whereby said fluid will pass through said concentric opening and out between said vanes, a cavity formed in said rotor and communicating with said hollow shaft, said vanes having a curved spiral external shape designed to produce a non-turbulent flow of the fluid, and said vanes having therein ducts communicating with said cavity and having a section which increases towards their outlet orifices.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biotechnology (AREA)
  • General Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Mechanical Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
US3485484D 1966-10-20 1967-09-08 Device for the circulation and the aeration of fluids Expired - Lifetime US3485484A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR80911A FR1504011A (fr) 1966-10-20 1966-10-20 Dispositif de circulation et d'aération de fluides

Publications (1)

Publication Number Publication Date
US3485484A true US3485484A (en) 1969-12-23

Family

ID=8619616

Family Applications (1)

Application Number Title Priority Date Filing Date
US3485484D Expired - Lifetime US3485484A (en) 1966-10-20 1967-09-08 Device for the circulation and the aeration of fluids

Country Status (8)

Country Link
US (1) US3485484A (fr)
BE (1) BE702093A (fr)
ES (1) ES344703A1 (fr)
FR (1) FR1504011A (fr)
GB (1) GB1192796A (fr)
IL (1) IL28602A (fr)
SE (1) SE323040B (fr)
SU (1) SU574132A3 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809499A (en) * 1971-06-21 1974-05-07 Tno Centrifugal compressor
US4297214A (en) * 1979-02-05 1981-10-27 Claudio Guarnaschelli Aerator
US4530643A (en) * 1982-10-11 1985-07-23 Itt Industries, Inc. Centrifugal pump impeller
US5176447A (en) * 1988-04-29 1993-01-05 Energiagazdalkodasi Intenzet Turbomixer with rotating injector for mixing liquid
US5385443A (en) * 1993-10-12 1995-01-31 Les Traitements Des Eaux Poseidon Inc. Centrifugal liquid pump with internal gas injection assembly
WO1998046887A1 (fr) 1997-04-11 1998-10-22 Les Traitements Des Eaux Poseidon Inc. Pompe a liquide centrifuge avec injection de gaz interne
US6394430B1 (en) * 1998-10-13 2002-05-28 Ekato Rühr-und Mischtechnik GmbH Auto-aspirating rotational dispersion device
US20040112799A1 (en) * 2001-04-04 2004-06-17 Timo Niitti Flotation machine
US20070228584A1 (en) * 2006-03-31 2007-10-04 Hills Blair H Apparatus for mixing gasses and liquids
US20080110192A1 (en) * 2006-11-14 2008-05-15 Samsung Electronics Co., Ltd. Humidifying apparatus and air conditioner having the same
WO2022248774A1 (fr) * 2021-05-28 2022-12-01 Metso Outotec Finland Oy Rotor d'agencement de dispersion de gaz

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT348953B (de) * 1977-08-26 1979-03-12 Alfa Laval Stalltech Vorrichtung zur begasung und umwaelzung von fluessigkeiten
NO142830C (no) * 1978-02-28 1980-10-29 Trondhjems Mek Verksted As Anordning for fordeling av en gass i et vaeskemedium
US4193702A (en) * 1978-09-20 1980-03-18 Davis Philip E Jet mixer and method
DE3635642A1 (de) * 1986-10-20 1988-04-28 Sp K Bjuro Konstruirovaniju T Flotationsmaschine
DE4330697C2 (de) * 1993-08-20 1996-10-24 Christian Dipl Ing Nerger Rührwerk mit rotationssymmetrischem Rührkörper zum Suspendieren und/oder zum Begasen
AT400008B (de) * 1993-09-29 1995-09-25 Frings & Co Heinrich Vorrichtung zur gaseintragung in eine flüssigkeit
RU2518769C1 (ru) * 2013-01-23 2014-06-10 Александр Олегович Кудрявцев Турбонасос для двух текучих сред

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL90265C (fr) *
US390508A (en) * 1888-10-02 Draft
US1242445A (en) * 1916-01-06 1917-10-09 Martin H Ittner Apparatus for treating liquids with gases.
FR57337E (fr) * 1948-05-05 1953-01-02 Perfectionnements aux compresseurs à gaz à pistons liquides
DE920234C (de) * 1952-11-06 1954-11-15 Kuehnle Ag Verfahren und Vorrichtung zum Schutz der stroemungsfuehrenden Wandungen rotierender Teile gegen Verschleiss durch feste Teile
US2743914A (en) * 1950-09-27 1956-05-01 American Instr Co Inc Gas-liquid mixing apparatus
US2888188A (en) * 1956-12-03 1959-05-26 Fuller Co Centrifugal fluid pump
US2918017A (en) * 1956-06-11 1959-12-22 Arthur L Collins Centrifugal pumps
US2920813A (en) * 1958-01-02 1960-01-12 Westinghouse Electric Corp Gas reaction rotors
GB925946A (en) * 1959-11-20 1963-05-15 Snecma Improvements in centrifugal compressors

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL90265C (fr) *
US390508A (en) * 1888-10-02 Draft
US1242445A (en) * 1916-01-06 1917-10-09 Martin H Ittner Apparatus for treating liquids with gases.
FR57337E (fr) * 1948-05-05 1953-01-02 Perfectionnements aux compresseurs à gaz à pistons liquides
US2743914A (en) * 1950-09-27 1956-05-01 American Instr Co Inc Gas-liquid mixing apparatus
DE920234C (de) * 1952-11-06 1954-11-15 Kuehnle Ag Verfahren und Vorrichtung zum Schutz der stroemungsfuehrenden Wandungen rotierender Teile gegen Verschleiss durch feste Teile
US2918017A (en) * 1956-06-11 1959-12-22 Arthur L Collins Centrifugal pumps
US2888188A (en) * 1956-12-03 1959-05-26 Fuller Co Centrifugal fluid pump
US2920813A (en) * 1958-01-02 1960-01-12 Westinghouse Electric Corp Gas reaction rotors
GB925946A (en) * 1959-11-20 1963-05-15 Snecma Improvements in centrifugal compressors

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809499A (en) * 1971-06-21 1974-05-07 Tno Centrifugal compressor
US4297214A (en) * 1979-02-05 1981-10-27 Claudio Guarnaschelli Aerator
US4530643A (en) * 1982-10-11 1985-07-23 Itt Industries, Inc. Centrifugal pump impeller
US5176447A (en) * 1988-04-29 1993-01-05 Energiagazdalkodasi Intenzet Turbomixer with rotating injector for mixing liquid
US5385443A (en) * 1993-10-12 1995-01-31 Les Traitements Des Eaux Poseidon Inc. Centrifugal liquid pump with internal gas injection assembly
WO1998046887A1 (fr) 1997-04-11 1998-10-22 Les Traitements Des Eaux Poseidon Inc. Pompe a liquide centrifuge avec injection de gaz interne
US6394430B1 (en) * 1998-10-13 2002-05-28 Ekato Rühr-und Mischtechnik GmbH Auto-aspirating rotational dispersion device
EP0993862B2 (fr) † 1998-10-13 2006-12-27 EKATO Rühr- und Mischtechnik GmbH Dispositif de dispersion rotatif et auto-aspirante
US20040112799A1 (en) * 2001-04-04 2004-06-17 Timo Niitti Flotation machine
US6945408B2 (en) * 2001-04-04 2005-09-20 Outokumpu Technology Oy Flotation machine
US20070228584A1 (en) * 2006-03-31 2007-10-04 Hills Blair H Apparatus for mixing gasses and liquids
US8146895B2 (en) * 2006-03-31 2012-04-03 Hills Blair H Apparatus for mixing gasses and liquids
US20080110192A1 (en) * 2006-11-14 2008-05-15 Samsung Electronics Co., Ltd. Humidifying apparatus and air conditioner having the same
JP2008122061A (ja) * 2006-11-14 2008-05-29 Samsung Electronics Co Ltd 加湿装置及びこれを有する空気調和機
WO2022248774A1 (fr) * 2021-05-28 2022-12-01 Metso Outotec Finland Oy Rotor d'agencement de dispersion de gaz

Also Published As

Publication number Publication date
IL28602A (en) 1972-05-30
ES344703A1 (es) 1968-10-16
GB1192796A (en) 1970-05-20
FR1504011A (fr) 1967-12-01
SE323040B (fr) 1970-04-27
BE702093A (fr) 1968-01-02
SU574132A3 (ru) 1977-09-25

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