US1726125A - Agitator aerator for liquids - Google Patents

Agitator aerator for liquids Download PDF

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Publication number
US1726125A
US1726125A US200809A US20080927A US1726125A US 1726125 A US1726125 A US 1726125A US 200809 A US200809 A US 200809A US 20080927 A US20080927 A US 20080927A US 1726125 A US1726125 A US 1726125A
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Prior art keywords
agitator
passages
chamber
head
liquid
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Expired - Lifetime
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US200809A
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Rowand Thomas Arthur
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    • 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
    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/81—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow
    • 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
    • B01F23/23353—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 sucked towards 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
    • B01F27/11—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

Definitions

  • the same are formed with increasing cross-' sectional capacity toward their outer ends, and the passages are so disposed that they trail in reference to the direction of rotation of the agitator.
  • the air is preferably admitted to the interior of the agitator through an axial bore in the driving shaft, the upper or outer end of said bore being in communication with atmosphere.
  • Fig. 1 is a vertical section showing the agitator and its driving shaft;
  • Fig. 2 is an elevation of the same;
  • Fig. 3 is a plan view of the agitator base;
  • Fig. 4 is an elevation of the cap of the agitator, and
  • Fig. 5 is an elevation on reduced scale showing the agitator-aerator assembled.
  • 1 is the container which is provided with a bottom dis charge port to which is connected the leadoft pipe 2 having a valve 3.
  • the container is usually of substantially the general contour shown.
  • the agitator, which is immersed in the liquid within a short distance of the bottom of the container is shown comprised of the preferably circular base plate 4 and cap 5 which fits down on the base plate and is detachably secured thereto, as
  • cap screws 5 whose heads are countersunk in the cap 5.
  • the neck 6 of the cap is cylindrical and internally threaded so that the lower threaded end of the driving shaft 7 may be screwed therein.
  • the upper end of the driving shaft is connected with power means for rotating the shaft and with it the agitator.
  • the electric motor 8 whose shaft 9 is face of the base, their top walls being formed bythe cap 5 when the latter is secured in place.
  • the passages are of progressively enlarging cross-sectional area toward their outer ends, this increase being preferably provided for by both widening and deepen ing the passages.
  • the passages are also arranged to trail relative to the direction of rotation of the agitator which is assumed to be clockwise, as illustrated in Fig. 3.
  • the introduction of the air also aids in the mixing effect on the liquid by its agita tion.
  • An aerating agitator having a stem and head, said stem having a bore extending longitudinally therethrough, said head having a central chamber with which said here communicates and having passages leading from the chamber and opening peripherally of the head, said passages havin side walls diverging outwardly from the chamber and having top and bottom walls also diverging out- 'wardly from the chamber, the side walls of each passage forming segmento-cylindrical surfaces curved backwardly from the direction of travel of the head, the side walls of each passage joining the adjacent side walls ()1 the adjacent passages at an acute angle facing the direction of travel of the head.
  • An aerating agitator having a stem and head, said stem having a bore extending longitudinally therethrough, said head having a central chamber with which said bore communicates, said bore having its lower end taperingly enlarged downwardly to the diameter of the chamber, said chamber having passages leading from the chamber and opening peripherally of the head, said passages having side walls diverging outwardly from the chamber and having top and bottom walls also diverging outwardly from the chamber, the side walls of each passage forming segmento-cylindrical surfaces curved baekwardly from the direction of travel of the head, the side walls of each passage joining the adjacent side walls of the adjacent passages at an acute angle facing the direction of travel of the head.
  • An aerating agitator having a stem and head, said stem having a bore extending longitudinally therethrough, said head having a central chamber with which said bore communicates, said bore having its lower end taperingly enlarged downwardly to the diameter of the chamber, said chamber having passages leading from the chamber and open ing peripherally of the head, said passages having side walls diverging outwardly from the chamber and having top and bottom walls also diverging outwardly from the chamber, the topwalls being horizontal and the bottom walls being inclined downwardly whereby air passing through the passages tends to flow in a slightly downward direction, the side walls of each passage forming segmento-cylindrical surfaces curved backwardly from the direction of travel of the head, the side walls of each passage joining the adjacent side walls of the adjacent passages at an acute angle facing the direction of travel of the head.

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

Description

Aug. 27, 1929. T. A. ROWAND AGITATOR AERATOR FOR LIQUIDS Filed June 23,- "1927 syfim 2% i ATTORNEY Patented Aug. 27, 1929.
UNITED STATES THOMAS ARTHUR ROWAND, OF
PITTSBURGH, PENNSYLVANIA.
AGITATOR AERATOR FOR LIQUIDS.
Application filed June 23,
In the preparation of liquids, employed by bread bakeries, it is customary to agitate the same.
In the preparation of the liquid it is placed in a suitable container and is agitated by means of a rotary stirrer which is immersed in the liquid.
It is advantageous also to aerate the liquid for various reasons, and my object is to provide convenient and eifectivemeans for simultaneously agitating and aerating the liquid.
I effect this by providing the agitator with air passages leading from the center of the agitator to itsperimetral edge or surface, the hollow interior of the agitator being in communication with atmosphere. To increase the effect of the suction which draws the air outwardly through these passages, the same are formed with increasing cross-' sectional capacity toward their outer ends, and the passages are so disposed that they trail in reference to the direction of rotation of the agitator.
The air is preferably admitted to the interior of the agitator through an axial bore in the driving shaft, the upper or outer end of said bore being in communication with atmosphere.
Other novel features of construction, and also of arrangement of'parts will appear from the following description.
In the accompanying drawings, wherein I have illustrated the best embodiment of the principles of my invention now known to me, Fig. 1 is a vertical section showing the agitator and its driving shaft; Fig. 2 is an elevation of the same; Fig. 3 is a plan view of the agitator base; Fig. 4 is an elevation of the cap of the agitator, and Fig. 5 is an elevation on reduced scale showing the agitator-aerator assembled.
Referring to the drawings, 1 is the container which is provided with a bottom dis charge port to which is connected the leadoft pipe 2 having a valve 3. The container is usually of substantially the general contour shown. The agitator, which is immersed in the liquid within a short distance of the bottom of the container is shown comprised of the preferably circular base plate 4 and cap 5 which fits down on the base plate and is detachably secured thereto, as
1927. Serial No. 200,809.
by the cap screws 5 whose heads are countersunk in the cap 5. The neck 6 of the cap is cylindrical and internally threaded so that the lower threaded end of the driving shaft 7 may be screwed therein. The upper end of the driving shaft is connected with power means for rotating the shaft and with it the agitator. Thus I have shown the electric motor 8 whose shaft 9 is face of the base, their top walls being formed bythe cap 5 when the latter is secured in place.
The passages are of progressively enlarging cross-sectional area toward their outer ends, this increase being preferably provided for by both widening and deepen ing the passages.
The passages are also arranged to trail relative to the direction of rotation of the agitator which is assumed to be clockwise, as illustrated in Fig. 3.
It is thus seen that the shape and disposal of the passages aids in the application of the centrifugal forces.
It is apparent that while the agitator is stationary the liquid will enter the passages 14 and rise in the bore 11 to the height of the liquid in the container. When the agitator is rotated the centrifugal forces set up in the liquid in the container result in drawing the liquid out of the bore and'the passages and also in a reduction of the internal pressure in the liquid in the container. This causes the air to be sucked in from atmosphere through the ports 12, the bore 11 and the passages 14 into the body of liquid where it becomes thoroughly mixed with the latter.
The result is that the proper quantity of air is introduced into and uniformly mixed with the liquid, thus effecting its desired aeration.
No air compressor or other source of supply of air under pressure is thus required.
The introduction of the air also aids in the mixing effect on the liquid by its agita tion.
lVhat I desire to claim is 1. An aerating agitator having a stem and head, said stem having a bore extending longitudinally therethrough, said head having a central chamber with which said here communicates and having passages leading from the chamber and opening peripherally of the head, said passages havin side walls diverging outwardly from the chamber and having top and bottom walls also diverging out- 'wardly from the chamber, the side walls of each passage forming segmento-cylindrical surfaces curved backwardly from the direction of travel of the head, the side walls of each passage joining the adjacent side walls ()1 the adjacent passages at an acute angle facing the direction of travel of the head.
2. An aerating agitator having a stem and head, said stem having a bore extending longitudinally therethrough, said head having a central chamber with which said bore communicates, said bore having its lower end taperingly enlarged downwardly to the diameter of the chamber, said chamber having passages leading from the chamber and opening peripherally of the head, said passages having side walls diverging outwardly from the chamber and having top and bottom walls also diverging outwardly from the chamber, the side walls of each passage forming segmento-cylindrical surfaces curved baekwardly from the direction of travel of the head, the side walls of each passage joining the adjacent side walls of the adjacent passages at an acute angle facing the direction of travel of the head.
3. An aerating agitator having a stem and head, said stem having a bore extending longitudinally therethrough, said head having a central chamber with which said bore communicates, said bore having its lower end taperingly enlarged downwardly to the diameter of the chamber, said chamber having passages leading from the chamber and open ing peripherally of the head, said passages having side walls diverging outwardly from the chamber and having top and bottom walls also diverging outwardly from the chamber, the topwalls being horizontal and the bottom walls being inclined downwardly whereby air passing through the passages tends to flow in a slightly downward direction, the side walls of each passage forming segmento-cylindrical surfaces curved backwardly from the direction of travel of the head, the side walls of each passage joining the adjacent side walls of the adjacent passages at an acute angle facing the direction of travel of the head.
Signed at Pittsburgh, Pa, this 21st day of J une, 1-927.
THOMAS ARTHUR ROVVAND.
US200809A 1927-06-23 1927-06-23 Agitator aerator for liquids Expired - Lifetime US1726125A (en)

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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800315A (en) * 1954-10-04 1957-07-23 Edwin C Griesbach Device for the dispersion of gas in a liquid
US2928665A (en) * 1950-09-27 1960-03-15 American Instr Co Inc Gas-liquid mixing apparatus
US5660766A (en) * 1995-09-22 1997-08-26 Van Dyek; Bernhard Aerator
US20050029685A1 (en) * 2003-08-06 2005-02-10 Hang Zhao Beverage mixer/aerator
US20070064524A1 (en) * 2005-09-19 2007-03-22 Carl Brazelton Polymer mixing apparatus
US20120195160A1 (en) * 2009-10-23 2012-08-02 Atsushi Sugihara Agitation apparatus
US20120195159A1 (en) * 2009-10-23 2012-08-02 Masanori Kitayoshi Agitation apparatus
US20210394132A1 (en) * 2018-12-03 2021-12-23 Invent Umwelt- Und Verfahrenstechnik Ag Hyperboloid agitator for circulating liquids, and agitating and gassing device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928665A (en) * 1950-09-27 1960-03-15 American Instr Co Inc Gas-liquid mixing apparatus
US2800315A (en) * 1954-10-04 1957-07-23 Edwin C Griesbach Device for the dispersion of gas in a liquid
US5660766A (en) * 1995-09-22 1997-08-26 Van Dyek; Bernhard Aerator
US6126150A (en) * 1995-09-22 2000-10-03 Van Dyk; Bernhard Submersible mixing impeller
US20050029685A1 (en) * 2003-08-06 2005-02-10 Hang Zhao Beverage mixer/aerator
US7500778B2 (en) * 2005-09-19 2009-03-10 Carl Brazelton Polymer mixing apparatus
US20070064524A1 (en) * 2005-09-19 2007-03-22 Carl Brazelton Polymer mixing apparatus
US20120195160A1 (en) * 2009-10-23 2012-08-02 Atsushi Sugihara Agitation apparatus
US20120195159A1 (en) * 2009-10-23 2012-08-02 Masanori Kitayoshi Agitation apparatus
US8662740B2 (en) * 2009-10-23 2014-03-04 Toyota Jidosha Kabushiki Kaisha Agitation apparatus
CN102574081B (en) * 2009-10-23 2014-07-23 丰田自动车株式会社 Stirring device
US8998482B2 (en) * 2009-10-23 2015-04-07 Toyota Jidosha Kabushiki Kaisha Agitation apparatus
US20210394132A1 (en) * 2018-12-03 2021-12-23 Invent Umwelt- Und Verfahrenstechnik Ag Hyperboloid agitator for circulating liquids, and agitating and gassing device
US11484848B2 (en) * 2018-12-03 2022-11-01 Invent Umwelt—Und Verfahrenstechnik Ag Apparatus for aerating bodies of water
US11731090B2 (en) * 2018-12-03 2023-08-22 Invent Umwelt- Und Verfahrenstechnik Ag Hyperboloid agitator for circulating liquids, and agitating and gassing device

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