EP0320480A1 - Apparat zum Verfertigen einer Mischung von Flüssigkeit und Pulver und zum Kneten und Extrudieren dieser Mischung - Google Patents

Apparat zum Verfertigen einer Mischung von Flüssigkeit und Pulver und zum Kneten und Extrudieren dieser Mischung Download PDF

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Publication number
EP0320480A1
EP0320480A1 EP88850414A EP88850414A EP0320480A1 EP 0320480 A1 EP0320480 A1 EP 0320480A1 EP 88850414 A EP88850414 A EP 88850414A EP 88850414 A EP88850414 A EP 88850414A EP 0320480 A1 EP0320480 A1 EP 0320480A1
Authority
EP
European Patent Office
Prior art keywords
wheel assembly
mixer
blades
mixture
shell
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.)
Granted
Application number
EP88850414A
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English (en)
French (fr)
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EP0320480B1 (de
Inventor
Nemo Ivarson
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT88850414T priority Critical patent/ATE82704T1/de
Publication of EP0320480A1 publication Critical patent/EP0320480A1/de
Application granted granted Critical
Publication of EP0320480B1 publication Critical patent/EP0320480B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/228—Extrusion presses; Dies therefor using pressing means, e.g. rollers moving over a perforated die plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/70—Spray-mixers, e.g. for mixing intersecting sheets of material
    • B01F25/74—Spray-mixers, e.g. for mixing intersecting sheets of material with rotating parts, e.g. discs
    • B01F25/743—Spray-mixers, e.g. for mixing intersecting sheets of material with rotating parts, e.g. discs the material being fed on both sides of a part rotating about a vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/82—Combinations of dissimilar mixers

Definitions

  • the present invention relates to an apparatus which combines the steps of continuously mixing together powder and liquid ingredients, kneading the resultant mixture to form a com­pact plastic mass or dough and extruding said plastic mass to form elongated extrusions.
  • the apparatus includes a mixer, a mixer housing, individual liquid and powder deli­very conduits, and a mixture outlet.
  • the mixing housing has arranged therein a horizontal wheel which is rotatable together with a vertically extending shaft in the mixer housing, and the liquid delivery conduit opens into a cavity located in the wheel, whereas the powder delivery con­duit opens into a powder chamber located in the upper part of the horizontal wheel.
  • the cavity communicates with the upper side of the wheel through a circumferentially extend­ing slot or gap, which opens out adjacent a circumferentially extending edge located on the side of the slot or gap nearest the periphery of said wheel, said slot having substantially a frusto-conical configuration, with the apex of the cone facing downwards.
  • pellets are produced by first mixing a dry material with a binder dissolved in water or some other sol­vent, which will often be highly volatile, whereafter the resultant mixture is transferred to an extruder, in which the mixture is pressed, in various ways, through extrusion dies or orifices of different shapes and sizes.
  • Apparatus for continuously mixing liquid and powder material together so as to form a substantially homogenous mixture is previously known from Swedish Published Patent Specification 421 047.
  • An apparatus for kneading a mixture and subsequent extrusion of the resultant plastic mass, a so-called extru­der, is described and illustrated in EPC-application 85850119.0.
  • the step of transfer­ring the mixture to the extruder is always encumbered with handling problems, particularly when volatile solvents are used.
  • vaporization of the solvent present results in partial drying of the mixture, with subsequent disturban­ces in production, which results in extrusions of uneven quality.
  • the object of the present invention is to overcome this problem, by enabling the steps of mixing together the mixture ingredients and of kneading and extruding the resultant mix­ture to be carried out in one and the same apparatus, there­by obviating the need of using two separate apparatus, as required by the prior art techniques.
  • the inventive apparatus is based on the apparatus described and illustrated in the prior published Swedish Specification No. 421 047, this known apparatus being modified in accordance with the inven­tive concept to include compacting, kneading and extruding facilities.
  • the inventive apparatus is characterized by a cylindrical shell which surrounds the outer peripheral surface of the mixing housing and which is perforated with holes over that part of its periphery which lies across the mixer housing outlet and the axis of which is coaxial with the axis of the mixer wheel; and by blades which are disposed between the circumferentially extending edge and the cylindrical shell in the chord direction of the mixer housing and the outer ends of which blades lie against the inner surface of said shell.
  • Figure 1 is a vertical sectional view of the apparatus according to the invention
  • Figure 2 is a section taken on the line II-II in Figure 1
  • Figure 3 shows part of the section of Figure 2 in larger scale
  • Figure 4 shows part of the section of Figure 1 in larger scale.
  • the illustrated apparatus includes a mixer housing 1 provided with a cover member 2.
  • a wheel assembly which comprises an upper wheel 3 and a lower wheel 4, said wheels extending in the horizontal plane and said lower wheel including a hollow shaft 5 which is journal­led in bearing 6 for rotation in the housing 1.
  • Located between the upper and lower wheels 3 and 4 is a cavity 7 which communicates with the upper side of the upper wheel 3 through a circumferentially extending slot 8 which has a frusto-conical configuration, with the cone apex facing downwards.
  • Blades 9 are mounted on the upper wheel 3. The blades 9 define therebetween spaces 10 which are intended to receive the powder ingredient of the mixture.
  • a circumferentially extending chopper edge 11 Located on the lower wheel 4, adjacent the orifice of the slot 8, is a circumferentially extending chopper edge 11, and the lower wheel 4 carries on its peripheral surface blades or "baffles" 12, the outer edges 13 of which run adjacent to a conical surface 14 on the cover member 2.
  • Extending cir­cumferentially around the mixer housing is a recess which accommodates a perforated shell 15.
  • the holes 16 of the shell 15 are of cylindrical configuration and the axes of respective holes form an angle ⁇ with the radius of the mixer housing, which lies between 0 and 90° and is, for instance 60°.
  • the angle ⁇ between the axes of the holes and the plane 17 of the orifices thereof is preferably about 90°.
  • the powder ingredient is delivered to the mixer housing through a conduit 18 and the liquid ingredient is delivered through the cavity or hollow 19 in the hollow shaft 9.
  • the wheel assembly 3, 4 rotates in the housing 1 at a speed of from 1000 to 5000 rpm.
  • the liquid ingredient, or wet phase is therewith delivered to the cavity 7 between said upper and lower wheels through the hollow tubular shaft 5.
  • the liquid is thrown outwardly by the centrifugal force generated and passes through the slot 8, to form a liquid film or skin which expands constantly outwards while becoming thinner in the process.
  • the liquid film leaves the slot 8 it strikes the chopper edge 11 and is therewith disintegrated into microscopic droplets, so as to form a mist curtain.
  • the powder ingredient is passsed through the conduit 18 to the spaces 10 defined between mutually adjacent blades 9 at the same time as the liquid ingredient is delivered to the cavi­ty 7, this powder ingredient being thrown outwardly by centrifugal force and the blades 9, towards the periphery of the upper wheel 3 while simultaneously being whipped-up and impinging with the mist curtain at the chopper edge 11.
  • the two ingredients, or phases, are now slung outwardly to­gether and collide against the conical surface 14 on the cover member 2, where they are instantaneously mixed together.
  • the resultant mixture is immediately caught by the blades 12, the edges 13 of which pass immediately adjacent the conical surface 14 and knead and tear the mixture against said surface, in a process similar to that of kneading and rolling-out pastry dough.
  • the mixtures is kneaded and rolled or spread down towards the perforated shell 15 while being formed into a compact, plastic mass.
  • This plastic mass is subsequently pressed through the cylindrical holes 16 by the outer, leading edge 21 of the blades 12, these edges passing contiguously with the inner surface 22 of the shell 15, to form homogenous, compact elongated, cylindrical extrusions 20.
  • the holes 16 are formed at an angle ⁇ relative to the shell radius, which lies as close to a right angle as possible, so that the forces exerted by the blades are active as near as possible in the direction of the axes of said holes 16. This will reduce losses due to friction and also reduce the amount of heat generated during the actual moment of extruding the plastic mass.
  • the plane of the inlet orifices of respective holes 16 shall form with the axes of said holes an angle ⁇ which is as near to a right angle as possible, so as to prevent the extrusions from being deflected against the outer surface of the shell, such deflection resulting in bending of the extrusions such as to form a porous and cracked outer surface which renders further processing of the extrusiosn difficult.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP88850414A 1987-12-11 1988-12-08 Apparat zum Verfertigen einer Mischung von Flüssigkeit und Pulver und zum Kneten und Extrudieren dieser Mischung Expired - Lifetime EP0320480B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88850414T ATE82704T1 (de) 1987-12-11 1988-12-08 Apparat zum verfertigen einer mischung von fluessigkeit und pulver und zum kneten und extrudieren dieser mischung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8704949A SE463450B (sv) 1987-12-11 1987-12-11 Anordning foer blandning, knaadning och extrudering av produkter framstaellda av vaetska och pulver
SE8704949 1987-12-11

Publications (2)

Publication Number Publication Date
EP0320480A1 true EP0320480A1 (de) 1989-06-14
EP0320480B1 EP0320480B1 (de) 1992-11-25

Family

ID=20370569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88850414A Expired - Lifetime EP0320480B1 (de) 1987-12-11 1988-12-08 Apparat zum Verfertigen einer Mischung von Flüssigkeit und Pulver und zum Kneten und Extrudieren dieser Mischung

Country Status (5)

Country Link
EP (1) EP0320480B1 (de)
JP (1) JPH01208106A (de)
AT (1) ATE82704T1 (de)
DE (1) DE3876222D1 (de)
SE (1) SE463450B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4209527A1 (de) * 1992-03-24 1993-09-30 Dorr Oliver Deutschland Homogenisiermaschine
US6254335B1 (en) * 1995-04-19 2001-07-03 Kvaerner Pulping Ab Device for admixing a first fluid into a second fluid
EP2609999A1 (de) * 2011-12-26 2013-07-03 Jtekt Corporation Misch- und Ausgabevorrichtung
CN105664777A (zh) * 2016-03-24 2016-06-15 青岛科技大学 一种流体混合方法及高速离心流体混合装置
EP2866926A4 (de) * 2012-06-29 2016-07-20 Ivarsson Peter Nemo Lorens Fredrik Vorrichtung zum mischen von pulver und wenigstens einen weiteren art oder phase
CN116459697A (zh) * 2023-03-28 2023-07-21 深圳市尚水智能股份有限公司 叶轮组件及制浆设备

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9422154D0 (en) 1994-11-03 1994-12-21 Euro Celtique Sa Pharmaceutical compositions and method of producing the same
US5965161A (en) 1994-11-04 1999-10-12 Euro-Celtique, S.A. Extruded multi-particulates
DE19918325A1 (de) 1999-04-22 2000-10-26 Euro Celtique Sa Verfahren zur Herstellung von Arzneiformen mit regulierter Wirkstofffreisetzung mittels Extrusion
CN104135708B (zh) * 2014-08-14 2017-08-25 陈宏乔 玉化砗磲珍珠质纳米粉及扬声器振膜的制作方法
CN115611003B (zh) * 2022-10-26 2025-08-01 江苏师范大学 一种水平管道防沉降装置、拆装方法及物料输送系统
CN116604719B (zh) * 2023-05-26 2026-01-02 安徽维龙新材料科技有限公司 一种物理吸湿bopp薄膜及其制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1085851B (de) * 1955-02-28 1960-07-28 Bayer Ag Vorrichtung zur Herstellung von Loesungen aus pulverfoermigen, insbesondere Stoffen mit niedrigem Schuettgewicht
US3045613A (en) * 1960-08-22 1962-07-24 K C G Corp Pelleting machine
GB1016232A (en) * 1961-12-07 1966-01-05 John Francis Anthony Meyer Liquids and solids mixer
FR2119797A1 (en) * 1969-11-03 1972-08-11 Degoul Marcel Centrifugal biological activation - of agents for eg homeopathy
GB1354167A (en) * 1971-07-28 1974-06-05 Foucault P Apparatus for mixing fluids
US4511321A (en) * 1982-05-19 1985-04-16 Glenn Howard Densification - pelletizing of organic materials
EP0163619A2 (de) * 1984-04-02 1985-12-04 Nicasystem Aktiebolag Extrudiervorrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1085851B (de) * 1955-02-28 1960-07-28 Bayer Ag Vorrichtung zur Herstellung von Loesungen aus pulverfoermigen, insbesondere Stoffen mit niedrigem Schuettgewicht
US3045613A (en) * 1960-08-22 1962-07-24 K C G Corp Pelleting machine
GB1016232A (en) * 1961-12-07 1966-01-05 John Francis Anthony Meyer Liquids and solids mixer
FR2119797A1 (en) * 1969-11-03 1972-08-11 Degoul Marcel Centrifugal biological activation - of agents for eg homeopathy
GB1354167A (en) * 1971-07-28 1974-06-05 Foucault P Apparatus for mixing fluids
US4511321A (en) * 1982-05-19 1985-04-16 Glenn Howard Densification - pelletizing of organic materials
EP0163619A2 (de) * 1984-04-02 1985-12-04 Nicasystem Aktiebolag Extrudiervorrichtung

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4209527A1 (de) * 1992-03-24 1993-09-30 Dorr Oliver Deutschland Homogenisiermaschine
US6254335B1 (en) * 1995-04-19 2001-07-03 Kvaerner Pulping Ab Device for admixing a first fluid into a second fluid
EP2609999A1 (de) * 2011-12-26 2013-07-03 Jtekt Corporation Misch- und Ausgabevorrichtung
JP2013132572A (ja) * 2011-12-26 2013-07-08 Jtekt Corp 混合分散装置
EP2866926A4 (de) * 2012-06-29 2016-07-20 Ivarsson Peter Nemo Lorens Fredrik Vorrichtung zum mischen von pulver und wenigstens einen weiteren art oder phase
US10118139B2 (en) 2012-06-29 2018-11-06 Peter-Nemo Lorens Fredrik Ivarsson Device for mixing powder and at least one other type of phase
EP3753628A1 (de) * 2012-06-29 2020-12-23 Ivarsson, Peter-Nemo Lorens Fredrik Vorrichtung zum mischen von pulver und mindestens eines weiteren phasentyps und verfahren
CN105664777A (zh) * 2016-03-24 2016-06-15 青岛科技大学 一种流体混合方法及高速离心流体混合装置
CN105664777B (zh) * 2016-03-24 2018-05-01 青岛科技大学 一种流体混合方法及高速离心流体混合装置
CN116459697A (zh) * 2023-03-28 2023-07-21 深圳市尚水智能股份有限公司 叶轮组件及制浆设备

Also Published As

Publication number Publication date
DE3876222D1 (de) 1993-01-07
SE8704949D0 (sv) 1987-12-11
SE8704949L (sv) 1989-06-12
JPH01208106A (ja) 1989-08-22
SE463450B (sv) 1990-11-26
EP0320480B1 (de) 1992-11-25
ATE82704T1 (de) 1992-12-15

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