US3374989A - Method and device for producing uniform dispersions - Google Patents

Method and device for producing uniform dispersions Download PDF

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Publication number
US3374989A
US3374989A US51564865A US3374989A US 3374989 A US3374989 A US 3374989A US 51564865 A US51564865 A US 51564865A US 3374989 A US3374989 A US 3374989A
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US
United States
Prior art keywords
blades
liquid
shaft
sets
stirring
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Expired - Lifetime
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English (en)
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Todtenhaupt Erich Karl
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Individual
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Priority claimed from DET27724A external-priority patent/DE1295524B/de
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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
    • 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
    • B01F27/0722—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis perpendicular with respect to 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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/91—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with propellers

Definitions

  • a uniform dispersion of subdivided material in a liquid is produced by confining a body of liquid which contains such subdivided material in an upright chamber of uniform unobstructed cross section throughout substantially the entire length thereof, and imparting to the subdivided material-containing body of liquid in the chamber in a plurality of superposed zones in radial and tangential direction a turbulent flow having in the axial direction of the chamber a component of movement of such strength as to cause intrusion of liquid from the respective zones into adjacent zones so as to create in the liquid of such adjacent zones eddy currents resulting in intimate mixing of the liquid and the subdivided material and information of a uniform dispersion; and a stirring device for carrying out the 'above process which comprises a single unobstructed upright chamber for the subdiv
  • the present invention relates to a method and device for producing uniform dispersions of gases and/ or liquids and/or solid materials in a continuous liquid phase.
  • leaf stirrers of large surface area are used, however, primarily a horizontal rotation of the entire content of the container is achieved thereby without a substantialy vertical fiow component Within the mass whichis to be dispersed.
  • the present invention contemplates a method of producing in a liquid a uniform dispersion of subdivided material, comprising the step of forming in a body of the liquid containing the subdivided material 'a plurality of superposed zones of turbulent flow in axial, radial and tangential direction, the axial flow being sufiicient to cause intermin'gling of liquid of at least one of the zones with liquid of adjacent ones of the zones, thereby forming at least of marginal portions of the adjacent zones marginal zones of turbulent countercurrents and causing intimate mixing of the liquid and the subdivided material so as to form a uniform dispersion thereof.
  • the present invention in also concerned with a stirring device for producing in a liquid a uniform dispersion of subdivided material, comprising, in combination, container means for holding a liquid therein, a shaft at least partially located in the container means; and a plurality of sets of stirring blades located within the container means and each set of blades fixed to the shaft and extending outwardly from the region of the shaft in planes, respectively, superposed and spaced from adjacent sets of blades, the blades in each set of blades extending outwardly from the shaft, and consecutive blades in each set of blades being oppositely inclined with respect to each other.
  • the blades of the various sets of blades may extend in a direction parallel to the radii extending from the shaft, or in such directions as to form angles with the radii extending from the shaft.
  • the shaft extends in upward or vertical direction
  • the blades of each set of blades are directly fixed to the shaft and extend outwardly from the shaft in a direction substantially perpendicular to the same, such as a horizontal direction if the shaft extends vertically.
  • Suitable drive means are provided for rotating the shaft and the sets of blades fixed thereto. These drive means, per se, may be conventional.
  • the blades of the superposed sets of blades may be equally arranged but with corresponding blades of adjacent sets being oppositely inclined.
  • individual blades which include an outer portion, and an inner portion interposed between the shaft and the outer portion, whereby the inner and outer portions of each blade are oppositely inclined with respect to each other.
  • two, three, four or more blades may be advantageously arranged in each set of blades, and, if the number of blades in one set of blades is four, then the blades are preferably so arrnaged as to define between themselves angles of about 90.
  • Each blade as it extends from the shaft, may be subdivided in longitudinal direction of the blade into several portions which are oppositely inclined relative to each other whereby, if two blades define between themselves an angle of about 180, blade portions equidistant from the shaft preferably are similarly inclined (of FIGS. and 6).
  • FIG. 1 is a schematic elevational view of a stirring device according to the present invention
  • FIG. 2 is a schematic horizontal cross sectional view, taken along the line 11-11 of FIG. 1;
  • FIG. 3 is a horizontal schematic cross sectional view of the stirring device as shown in FIG. 1 taken along the line III--III;
  • FIG. 4 is a schematic elevational view of another embodiment of a stirring device according to the present invention.
  • FIG. 5 is a schematic cross sectional view taken along line VV of FIG. 4.
  • FIG. 6 is a schematic cross sectional view taken along line VI--VI of FIG. 4.
  • FIG. 7 is a schematic horizontal cross sectional view of a third embodiment example of a stirring device according to the present invention whereby one set of blades comprises two subdivided stirring blades.
  • FIG. 8 is a schematic elevational view of a fourth embodiment example of a stirring device according to the present invention.
  • the stirring device comprises four sets of blades identified, respectively, by reference numerals 5, 6, 7 and 8, which blades are so arranged that adjacent blades within each set are oppositely inclined and thus, upon rotation of the set, will cause the formation of countercurrents.
  • the four sets of blades are fixed to a drive shaft 4 which in turn is rotated by motor 3.
  • the upper level 2 of the liquid mass in the dispersion container is located above uppermost set of blades 5.
  • FIG. 2 illustrates one of the sets of stirring blades, namely set 5, with the upward side edge of the individual blades indicated by reference numeral 9.
  • FIG. 3 illustrates in a manner similar to that of FIG. 2 the set of blades 6, and it will be seen that the direction of movement imparted by the blades in FIG. 3, wherein again the upper edge of the respective blades is indicated by reference numeral 9, will be opposite to that of the corresponding blades of FIG. 2.
  • the material, which is to be dispersed in the liquid filling the container up to level 2 will be put in motion by rotating blades which within each set of blades located in substantially one plane will comprise inclined blades which alternatingly will impart a movement in the direction of rotation and in opposite direction to the liquid with which the blades come in contact, thereby causing a mixing of the liquid mass so that even portions thereof which are of a greater specific weight will be pushed up to the surface 2 of the liquid mass and even portions of lesser specific weight will be pushed downwardly towards the bottom of container 1 by a series of continuously changing impulses.
  • an intimate and even mixing of the dispersed material and of the continuous liquid phase will be accomplished upon rotation of shaft 4, an intimate and even mixing of the dispersed material and of the continuous liquid phase will be accomplished.
  • each set of blades the individual blades are arranged substantially within one horizontal plane and, according to the illustrated example, the two blades of each set of blades are respectively subdivided in radial direction into an outer and an inner portion which are oppositely inclined and which will have the effect of causing turbulence extending into the turbulent zone formed by the adjacent higher or lower set of blades.
  • the stirring device of FIGS. 4-6 comprises seven sets of blades indicated by reference numerals 10, 11, 12, 13, 14, 15, and 16, each set of blades comprising two subdivided blades forming between themselves an angle of 180, and adjacent sets of blades form with each other angles of Similar to FIG. 1, the container 1 carries a motor 3 for rotating shaft 4, and shaft 4 carries the seven sets of blades 1016. The level of liquid within the container is above the uppermost set of blades 10.
  • FIG. 5 illustrates the set of blades 10, and here again the upwardly directed edge portions of the blades are indicated by reference numeral 9. It will be seen that these upwardly extending edge portions alternate, or that the individual blade portions are successively inclined in opposite directions. The upper edges of the blades are also shown in double lines.
  • FIG. 6 illustrates the next lower set of blades 11 which forms with set of blades 10 an angle of 90.
  • the upper edges of the blade portions are indicated by reference numeral 9 and are arranged in a manner similar to that described in connection with FIG. 5.
  • FIG. 8 illustrates in a schematic elevational view a set of two blades in a vertical plane containing the axis of a stirring device according to the present invention.
  • Each blade as it extends from the shaft is subdivided in longitudinal direction of the blades into two portions which are oppositely inclined relative to each other. Moreover the two blades define between themselves in a horizontal plane an angle of 180.
  • the axis of the shaft is the bisector of the angle between the two blade axes.
  • the surface of revolution described by the blades is a cone-shaped shell.
  • the dispersion is formed by impulses which occur upon violent contact or collision between liquid streams flowing in opposite direction, and thus the present method may also be identified as an impulse-counter-current method for producing uniform dispersions.
  • a stirring device particularly for producing in a liquid a uniform dispersion of subdivided material, comprising, in combination, container means defining a single unobstructed upright chamber arranged to accommodate a liquid therein; a shaft at least partially located in and coaxial with said chamber; and a plurality of sets of stirring blades carried by said shaft within said chamber and located in respective axially spaced parallel planes, each of said sets comprising at least two blades respectively extending transversely from opposite sides of said shaft towards the periphery of said chamber, each of said blades having radially consecutive oppositely inclined portions and in each set of blades the consecutive portions of one of the two blades being inclined oppositely to the corresponding blade portions of the other of said blades.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
US51564865 1964-12-29 1965-12-22 Method and device for producing uniform dispersions Expired - Lifetime US3374989A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET27724A DE1295524B (de) 1964-12-29 1964-12-29 Vorrichtung zum Dispergieren von Gasen und/oder Fluessigkeiten und/oder Feststoffen in Fluessigkeiten

Publications (1)

Publication Number Publication Date
US3374989A true US3374989A (en) 1968-03-26

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US51564865 Expired - Lifetime US3374989A (en) 1964-12-29 1965-12-22 Method and device for producing uniform dispersions

Country Status (6)

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US (1) US3374989A (de)
AT (1) AT265214B (de)
CH (1) CH455716A (de)
GB (1) GB1119266A (de)
NL (1) NL6514106A (de)
SE (1) SE309571B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966176A (en) * 1975-08-25 1976-06-29 Lux Ivan E Method and apparatus for producing filled resins
US4238159A (en) * 1975-07-15 1980-12-09 Ekato-Werk Erich Karl Todtenhaupt Apparatus for extracting alumina from bauxite
EP0305576A1 (de) * 1987-09-03 1989-03-08 Bauko Baukooperation Gmbh Rührwerkzeug für eine industrielle Misch- oder Rührmaschine
US4911553A (en) * 1986-11-28 1990-03-27 House Food Industrial Co., Ltd. Method and apparatus for feeding solid-liquid mixture
EP0487310A1 (de) * 1990-11-21 1992-05-27 Kajima Corporation Mischvorrichtung und -verfahren
US5330567A (en) * 1988-08-16 1994-07-19 Lenzing Aktiengesellschaft Process and arrangement for preparing a solution of cellulose
US5356215A (en) * 1990-11-21 1994-10-18 Kajima Corporation Mixing device
US5358328A (en) * 1990-11-21 1994-10-25 Kajima Corporation Mixing device
US5580168A (en) * 1995-06-01 1996-12-03 Agrigator Mixing system employing a dispersion tank with venturi input for dissolving water soluble additives into irrigation water
US5836688A (en) * 1994-08-18 1998-11-17 Laeis Bucher Gmbh Method and apparatus for processing materials
WO2003072235A1 (en) * 2002-02-26 2003-09-04 Spx Corporation Dual direction mixing impeller and method
US10384177B2 (en) * 2014-08-13 2019-08-20 Versalis S.P.A. Rotor and stirring device
WO2023124642A1 (zh) * 2021-12-31 2023-07-06 湖南宏工智能科技有限公司 一种干燥机的搅拌桨结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833897A (en) * 1982-04-16 1989-05-30 Demco, Inc. Salt-free liquid ice manufacturing apparatus

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US271242A (en) * 1883-01-30 Apparatus for treating artificial butter
US700033A (en) * 1901-06-03 1902-05-13 Joseph Glatz Rendering and drying apparatus.
US943200A (en) * 1909-06-11 1909-12-14 Fred Peter Churn.
FR420931A (fr) * 1909-07-22 1911-02-10 Chem Fab Vorm Weiler Ter Meer Dispositif pour l'exécution d'opérations mécaniques et chimiques
US2061547A (en) * 1935-10-08 1936-11-24 Jesse W Bumpus Paint mixer
US2657912A (en) * 1952-04-05 1953-11-03 Dravo Corp Bearing support for vertical agitating shafts
FR1127615A (fr) * 1955-06-07 1956-12-20 Fr De Produits Aromatiques Soc Agitateur pour la préparation de pâtes émulsionnées
US3307834A (en) * 1963-03-05 1967-03-07 Pilkington Brothers Ltd Methods for mixing finely-divided materials

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US271242A (en) * 1883-01-30 Apparatus for treating artificial butter
US700033A (en) * 1901-06-03 1902-05-13 Joseph Glatz Rendering and drying apparatus.
US943200A (en) * 1909-06-11 1909-12-14 Fred Peter Churn.
FR420931A (fr) * 1909-07-22 1911-02-10 Chem Fab Vorm Weiler Ter Meer Dispositif pour l'exécution d'opérations mécaniques et chimiques
US2061547A (en) * 1935-10-08 1936-11-24 Jesse W Bumpus Paint mixer
US2657912A (en) * 1952-04-05 1953-11-03 Dravo Corp Bearing support for vertical agitating shafts
FR1127615A (fr) * 1955-06-07 1956-12-20 Fr De Produits Aromatiques Soc Agitateur pour la préparation de pâtes émulsionnées
US3307834A (en) * 1963-03-05 1967-03-07 Pilkington Brothers Ltd Methods for mixing finely-divided materials

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238159A (en) * 1975-07-15 1980-12-09 Ekato-Werk Erich Karl Todtenhaupt Apparatus for extracting alumina from bauxite
US3966176A (en) * 1975-08-25 1976-06-29 Lux Ivan E Method and apparatus for producing filled resins
US4911553A (en) * 1986-11-28 1990-03-27 House Food Industrial Co., Ltd. Method and apparatus for feeding solid-liquid mixture
EP0305576A1 (de) * 1987-09-03 1989-03-08 Bauko Baukooperation Gmbh Rührwerkzeug für eine industrielle Misch- oder Rührmaschine
US5330567A (en) * 1988-08-16 1994-07-19 Lenzing Aktiengesellschaft Process and arrangement for preparing a solution of cellulose
US5356215A (en) * 1990-11-21 1994-10-18 Kajima Corporation Mixing device
EP0487310A1 (de) * 1990-11-21 1992-05-27 Kajima Corporation Mischvorrichtung und -verfahren
US5358328A (en) * 1990-11-21 1994-10-25 Kajima Corporation Mixing device
US5836688A (en) * 1994-08-18 1998-11-17 Laeis Bucher Gmbh Method and apparatus for processing materials
US5580168A (en) * 1995-06-01 1996-12-03 Agrigator Mixing system employing a dispersion tank with venturi input for dissolving water soluble additives into irrigation water
WO2003072235A1 (en) * 2002-02-26 2003-09-04 Spx Corporation Dual direction mixing impeller and method
US6796707B2 (en) 2002-02-26 2004-09-28 Spx Corporation Dual direction mixing impeller and method
AU2003213556B2 (en) * 2002-02-26 2008-05-22 Spx Flow, Inc. Dual direction mixing impeller and method
US10384177B2 (en) * 2014-08-13 2019-08-20 Versalis S.P.A. Rotor and stirring device
WO2023124642A1 (zh) * 2021-12-31 2023-07-06 湖南宏工智能科技有限公司 一种干燥机的搅拌桨结构

Also Published As

Publication number Publication date
NL6514106A (de) 1966-06-30
AT265214B (de) 1968-10-10
GB1119266A (en) 1968-07-10
CH455716A (de) 1968-05-15
SE309571B (de) 1969-03-31

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