US3588055A - Homogenizing device for powdered solids which are not free flowing - Google Patents

Homogenizing device for powdered solids which are not free flowing Download PDF

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Publication number
US3588055A
US3588055A US742072A US3588055DA US3588055A US 3588055 A US3588055 A US 3588055A US 742072 A US742072 A US 742072A US 3588055D A US3588055D A US 3588055DA US 3588055 A US3588055 A US 3588055A
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US
United States
Prior art keywords
screen
assembly
compartments
mixers
mixing
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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US742072A
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English (en)
Inventor
Elkan J De Jong
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Organon NV
Organon Inc
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Organon NV
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Publication date
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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
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/627—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis the receptacles being tiltable, e.g. for emptying
    • 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
    • B01F27/87—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the receptacle being divided into superimposed compartments

Definitions

  • An hourglassshaped assembly consists of two conical mixing compartments separated by a screen.
  • a driven shaft extends axially through the assembly and in each compartment carries an agitator and a brush, the brushes in the two compartments engaging the opposite sides of the screen.
  • the assembly is tiltable through 180 about a transverse axis.
  • two or more assemblies are connected together in series and separated by screens engaged by additional brushes. In the latter embodiment tilting of the device is unnecessary.
  • the invention relates to a mixing and homogenizing device for powdered solids, at least one of which is not free flowing, combining the advantages of a batchwise operating mixer with those of a continuous mixer, with simultaneous elimination of the drawbacks of both types of mixer.
  • the device is especially suited for mixing micronized materials, extremely finely divided powders.
  • batch mixers There are many kinds of batchwise operating mixers for solids, hereinafter called batch mixers.
  • a common feature of such mixers is that loading the components to be mixed and discharging the mixture obtained are effected discontinuously.
  • Batch mixers include e.g. many kinds of tumbling mixers (double cone, cube, V and Y-mixers), mixers with agitators (planetary mixers, mixers with plows, knives, spiral helixes, kneading devices), ball mills, edge runner mills, ribbon mixers, etc.
  • a device for mixing nonfree flowing solids combining the advantages of both types and eliminating the drawbacks, would mark a distinct advance in the technology of mixing.
  • the device according to the invention is a feed-through mixer, a so-called continuous mixer for nonfree flowing, powdered materials. It can be used both continuously for large quantities and batchwise for small quantities. Up till now such a device has not been known.
  • the device is primarily characterized by at least one hourglass-shaped assembly of two conical mixing compartments, separated by a means such as a perforated plate or screen, and a driven shaft, passing axially and centrally through the assembly and supporting, in each compartment on either side of the said screen, at least one agitator rotating in the same direction and at least one rubbing means, e.g. a brush likewise rotating in the same direction and pressed against the said screen.
  • a means such as a perforated plate or screen
  • a driven shaft passing axially and centrally through the assembly and supporting, in each compartment on either side of the said screen, at least one agitator rotating in the same direction and at least one rubbing means, e.g. a brush likewise rotating in the same direction and pressed against the said screen.
  • this device is characterized by one hourglass-shaped assembly of two identical conical compartments, this assembly being adapted to tilt at least on a transverse axis at the level of the said screen. By tilting the assembly the mixing operation can be repeated.
  • the assembly can be suspended for tilting on a frame.
  • the mixing compartments can be provided with an at least partly transparent, removable lid.
  • Another possible embodiment of the device according to the invention is characterized in that a number of hourglassshaped assemblies is serially disposed on top of each other, the bottom of the lower compartment of each assembly connecting to the top of the upper compartment of the next assembly, with a screen placed inbetween on either side of which acts a rubbing means e.g. a brush. in this embodiment tilting is not necessary.
  • This embodiment of the device lends itself especially to processing larger quantities of material. Processing of such quantities in a tilting assembly would require a very heavy construction.
  • Measures which may be applied in both embodiments consist in that the rubbing means pressing on either side of the said perforated plate or screen are not disposed opposite each other, and that the driven shaft is adjustable in positions deviating in respect of the vertical, of course together with the whole device.
  • the first measure results in a smooth feedthrough of the material through the perforated plate or screen, and the second measure gives a possibility to adjust the dwelltime of the mixture in each of the compartments.
  • the paddle gears or agitators can be mounted on a sleeve, slid on the central driven shaft and fixed in regard thereof.
  • the agitators cover substantially the whole content of the compartments and may have a wide variety of shapes, they may e.g. be wire-, bladeor knife-shaped. Their shape can be selected so that the material in the compartments is shirled up or pressed downwards.
  • the rubbing means or brushes may differ in shape, and besides in material and consequently in hardness. They are secured either to an agitator or to a loose ring, slid on the central shaft and secured thereto. Agitators and rubbing means are exchangeable, the shaft being preferably driven variably by the motor and/or the gearing.
  • the device according to the invention has a hitherto unprecedented number of possibilities to control the intensity of mixing, in consequence of which the requirements as to quality can likewise be met in unprecedentedly efficient fashion.
  • the brushes may be soft or hard, short haired or long haired, also a scraper ofe.g. Teflon may be used,
  • a definite quality of a mixture can be made e.g. with a fine mesh screen, a hard brush and a shaft inclination of 30 in two passages. The same quality could be attained with e.g. a screen of less fine mesh, vertically disposed shaft, but in four passages. It is important, especially for experiments, that the degree of charging scarcely plays a part, as opposed to many batch devices wherein a deviation from the optimum charge soon leads to decreased effectiveness.
  • the time during which the mixtures remains in the various compartments are to be adjusted in respect of each other so that a regular feed-through is ensured, the screen mesh playing an important part. All this is to be determined empirically, with which one can the experience use with the tilting embodiment of the invention, which operates on the same lines. If with discontinuous charging the variation are not quite too great, a uniform mixture can be discharged continuously.
  • the device can comprise fewer compartments.
  • small quantities of liquid can be components of the material being mixed, if desired.
  • FIG. 1 shows a longitudinal section of the tilting device.
  • FIG. 2 shows a longitudinal section of the nontilting device.
  • the components to be mixed are combined in the conical upper compartment A, whereupon the device is closed with lid 1 and subsequently motor 2 started.
  • This motor drives shaft 3 and the agitators 4 and brushes 5 rigidly secured thereto at a selected speed.
  • the material is premixed by the upper agitator and conglomerates are rubbed an extra spreading takes lace.
  • the device When all the materia has passed the screen 6, 111 the embodiment'according to FIG. 1 the device is tilted on trunnions 8, journaled in a supporting frame 7. The motor 2 tilts with the device. Then the second compartment B is up and.
  • FIG. 2 has a number of hourglassshaped assemblies, serially disposed on top of each other. As appears from FIG. 2 the bottom of the lower compartment of each assembly connects to the top of the upper compartment of the assembly located thereunder, with a perforated plate or screen 10 disposed inbetween, on either side of which acts a rubbing means, e.g. a brush lll.
  • the rubbing means may also extend diametrically across the whole screen, being disposed e.g. normal to the agitator.
  • a mixing and homogenizing device for powdered solids at least one of which is not free flowing comprising at least one hourglass-shaped assembly consisting of two conical mixing compartments, a screen separating said compartments, a driven shaft extending axially through said compartments, two agitators carried by and rotatable with said shaft in the respective compartments, and two rubbing means carried by and rotatable with the shaft in the respective compartments in pressing engagement with the opposite sides of said screen.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
US742072A 1967-07-07 1968-07-02 Homogenizing device for powdered solids which are not free flowing Expired - Lifetime US3588055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6709461A NL6709461A (enrdf_load_stackoverflow) 1967-07-07 1967-07-07

Publications (1)

Publication Number Publication Date
US3588055A true US3588055A (en) 1971-06-28

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ID=19800654

Family Applications (1)

Application Number Title Priority Date Filing Date
US742072A Expired - Lifetime US3588055A (en) 1967-07-07 1968-07-02 Homogenizing device for powdered solids which are not free flowing

Country Status (7)

Country Link
US (1) US3588055A (enrdf_load_stackoverflow)
BE (1) BE717330A (enrdf_load_stackoverflow)
CH (1) CH472907A (enrdf_load_stackoverflow)
DE (1) DE1757999A1 (enrdf_load_stackoverflow)
FR (1) FR1578230A (enrdf_load_stackoverflow)
GB (1) GB1221727A (enrdf_load_stackoverflow)
NL (1) NL6709461A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004056246A1 (de) * 2002-12-19 2004-07-08 Braun Gmbh Mischeinrichtung
RU2253508C2 (ru) * 2003-07-15 2005-06-10 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" Смеситель
US20060101842A1 (en) * 2004-11-15 2006-05-18 Jcs/Thg, Llc. Ice cream maker including nestable canister assembly
US7464835B2 (en) 2002-12-19 2008-12-16 Braun Gmbh Preparing and dispensing mixed beverages
RU2397804C1 (ru) * 2009-03-25 2010-08-27 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) Барабанный смеситель
RU2400297C1 (ru) * 2009-01-22 2010-09-27 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) Смеситель
RU2486001C1 (ru) * 2012-03-11 2013-06-27 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) Установка для смешивания и просеивания компонентов
WO2015170986A3 (en) * 2014-05-08 2016-02-04 Zuidema Casper Johan Mixing device, mixing hopper and dosing container
US20200307074A1 (en) * 2017-11-17 2020-10-01 Xaar 3D Limited Apparatus for the manufacture of three-dimensional objects
CN114405306A (zh) * 2021-12-23 2022-04-29 肇庆市金晟金属实业有限公司 一种废旧锂电池湿法回收系统用正负极粉料酸浸设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU609477B2 (en) * 1987-05-19 1991-05-02 Mitsubishi Jukogyo Kabushiki Kaisha Stirring apparatus and stirring tower type apparatus for polymerization reactions
US5145255A (en) * 1987-05-19 1992-09-08 Mitsubishi Jukogoyo Kabushiki Kaisha Stirring apparatus and stirring tower type apparatus for polmerization reactions

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7464835B2 (en) 2002-12-19 2008-12-16 Braun Gmbh Preparing and dispensing mixed beverages
CN100508843C (zh) * 2002-12-19 2009-07-08 布劳恩股份有限公司 混合装置
WO2004056246A1 (de) * 2002-12-19 2004-07-08 Braun Gmbh Mischeinrichtung
RU2253508C2 (ru) * 2003-07-15 2005-06-10 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" Смеситель
US20060101842A1 (en) * 2004-11-15 2006-05-18 Jcs/Thg, Llc. Ice cream maker including nestable canister assembly
US7412845B2 (en) * 2004-11-15 2008-08-19 Sunbeam Products, Inc. Ice cream maker including nestable canister assembly
RU2400297C1 (ru) * 2009-01-22 2010-09-27 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) Смеситель
RU2397804C1 (ru) * 2009-03-25 2010-08-27 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) Барабанный смеситель
RU2486001C1 (ru) * 2012-03-11 2013-06-27 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) Установка для смешивания и просеивания компонентов
WO2015170986A3 (en) * 2014-05-08 2016-02-04 Zuidema Casper Johan Mixing device, mixing hopper and dosing container
US11395995B2 (en) 2014-05-08 2022-07-26 Casper Johan Zuidema Mixing device, mixing hopper and dosing container
US20200307074A1 (en) * 2017-11-17 2020-10-01 Xaar 3D Limited Apparatus for the manufacture of three-dimensional objects
IL274471B2 (en) * 2017-11-17 2025-04-01 Stratasys Powder Production Ltd A device for producing three-dimensional objects
CN114405306A (zh) * 2021-12-23 2022-04-29 肇庆市金晟金属实业有限公司 一种废旧锂电池湿法回收系统用正负极粉料酸浸设备
CN114405306B (zh) * 2021-12-23 2022-08-26 广东金晟新能源股份有限公司 一种废旧锂电池湿法回收系统用正负极粉料酸浸设备

Also Published As

Publication number Publication date
GB1221727A (en) 1971-02-10
FR1578230A (enrdf_load_stackoverflow) 1969-08-14
CH472907A (de) 1969-05-31
BE717330A (enrdf_load_stackoverflow) 1968-12-02
NL6709461A (enrdf_load_stackoverflow) 1969-01-09
DE1757999A1 (de) 1971-06-16

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