EP0474102B1 - Verfahren und Vorrichtung zum Mahlen und Intensivmischen von Schüttgütern und/oder Flüssigkeiten unterschiedlicher Schüttverhalten, Dichte oder Viskosität zum Zwecke der Erreichung von homogenen Mischgütern - Google Patents

Verfahren und Vorrichtung zum Mahlen und Intensivmischen von Schüttgütern und/oder Flüssigkeiten unterschiedlicher Schüttverhalten, Dichte oder Viskosität zum Zwecke der Erreichung von homogenen Mischgütern Download PDF

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Publication number
EP0474102B1
EP0474102B1 EP91114415A EP91114415A EP0474102B1 EP 0474102 B1 EP0474102 B1 EP 0474102B1 EP 91114415 A EP91114415 A EP 91114415A EP 91114415 A EP91114415 A EP 91114415A EP 0474102 B1 EP0474102 B1 EP 0474102B1
Authority
EP
European Patent Office
Prior art keywords
stator
rotor
grinding
mixing
container
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
Application number
EP91114415A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0474102A1 (de
Inventor
Eberhard Lipp
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.)
Lipp Mischtechnik reble Schultze Ossing GmbH
Original Assignee
IMCATEC GmbH
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 IMCATEC GmbH filed Critical IMCATEC GmbH
Publication of EP0474102A1 publication Critical patent/EP0474102A1/de
Application granted granted Critical
Publication of EP0474102B1 publication Critical patent/EP0474102B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • 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
    • B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
    • B01F33/8305—Devices with one shaft, provided with mixing and milling tools, e.g. using balls or rollers as working tools; Devices with two or more tools rotating about the same 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
    • B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
    • B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
    • B01F33/83612—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by crushing or breaking

Definitions

  • the invention relates to a method for grinding and intensive mixing of bulk goods and / or liquids, in which the mixture components are mixed in a container by means of mixing tools and comminuted in a rotor / stator mill arranged in the container, according to the preamble of claim 1, and a device to carry out this method according to the preamble of claim 3.
  • the aim is always to have a homogeneous structure of the mixed material.
  • mixers which consist of an actual mixing drum in which a shaft is arranged centrally, on which mixing elements are fastened.
  • This shaft with the mixing elements is driven by a drive system, usually consisting of an electric motor, V-belt drive and reduction gear. Due to the special shape of the mixing elements and their arrangement on the shaft, the mix is whirled intensively.
  • a drive system usually consisting of an electric motor, V-belt drive and reduction gear. Due to the special shape of the mixing elements and their arrangement on the shaft, the mix is whirled intensively.
  • mills transversely to the axially extending mixing elements, to which the mixing components are fed through the mixing elements. So-called knife mills or rotor / stator mills are used here.
  • Rotor / stator mills are based on the principle of forced reduction in that the components are broken up, defibrated and dispersed.
  • the knife mills are based on the principle of impact crushing, whereby the components are broken up, defibrated, dispersed and compressed.
  • DE-OS 37 28 710 describes a mixer which has a shredder arranged on the container wall.
  • the purpose of this shredder is to ensure that a shear effect is obtained during shredding in order to prevent or dissolve lumps when mixing and drying, for example, extremely moist mixed materials.
  • the rotor and stator of the shredder are flowed through both radially and axially, which results in unsatisfactory mixing results, in particular due to the flowability of the stator.
  • This deficiency can be caused by the measure additionally proposed in this step, that of forming the radial arms of the rotor in a twisted manner for the purpose of an axial conveying effect, cannot be eliminated, since a considerable proportion of the mixed material can nevertheless escape radially through the stator.
  • DE-OS 15 07 889 discloses a method for operating mixing machines and an associated mixing machine with a built-in mill consisting of a rotor and a stator.
  • the mix is swirled in this built-in mill by means of rotor knives; however, due to the lack of counter edges for the rotor knives, there is no shearing effect on the mix.
  • the stator of this state of the art cannot be flowed through radially due to its closed design, a mixing result in need of improvement is obtained since the material to be mixed is only swirled by the rotor knives and is not ground.
  • the invention has for its object to provide a method and an apparatus of the type mentioned, in which the mixture in the rotor / stator mill arranged in the container is positively guided and forcibly subjected to a shear effect, and thus reliable and is ground and / or mixed thoroughly.
  • a generic method is improved in such a way that the mix in the rotor / stator mill experiences a forced pressing through a grinding gap formed by intermeshing intermeshing rotor and stator teeth, the inner grinding element forming the rotor and the outer grinding element forming the stator , and the mixed material does not flow through the outer grinding element in the radial direction.
  • a mixture component can preferably be passed from the outside, through the mill, in which the forced pressing takes place, into the container.
  • a device of the type mentioned at the outset is designed according to the invention in such a way that the inner grinding element forms the rotor and the outer grinding element forms the stator of the mill, the mixed material cannot flow radially through the outer grinding element, and that the rotor and the stator each have teeth distributed circumferentially. they mesh with each other and form a grinding gap for forcing the mixed material through.
  • the teeth of the rotor and the stator preferably have a trapezoidal shape, as a result of which they automatically form cutting edges.
  • the inner grinding element is preferably designed as a rotor, which has at least two vanes which are positioned in relation to the longitudinal axis of the mill, so that the mix is specifically transported in the axial direction. Depending on the application, the transport direction can change.
  • the stator can be screwed to an installation flange, at least one of these bolts being drilled through in the longitudinal direction, so that liquid or a mixture component can be transported from the outside into the mixing area.
  • the mill can expediently be driven at a variable speed, so that the grinding process can be adapted to the particular mix.
  • stator and the rotor provides that they are designed to open conically in the transport direction, or that the stator and rotor are designed to taper in the transport direction.
  • the stator is preferably designed as a jacket to prevent radial flow through.
  • the grinding elements of the stator shaped as teeth can be formed by the arrangement of preferably semicircular notches.
  • FIG. 1 shows the perspective view of a mixer 1 known per se.
  • This has a mixing drum 2 which is closed on both sides by end walls 3.
  • a shaft 4 is located centrally, on which a multiplicity of mixing elements 5 are arranged.
  • the mixing elements 5 are welded to the shaft 4 or screwed into pockets welded to the shaft.
  • the shaft 4 with the mixing elements 5 is driven by an electric motor 6.
  • the mix is already whirled through this arrangement.
  • the rotor / stator mill 7 according to the invention is preferably installed in the lower drum area. This mill 7 or its rotor / stator head is now described in more detail in FIG.
  • the mill 7 consists essentially of a rotor 8 and a stator 9, which have a common geometric axis 10.
  • the stator 9 has a toothing 12 corresponding to the toothing 11 of the rotor 8, such that corresponding radial inlets 18 are formed between the toothing 12, in which the toothing 11 of the rotor 8 can rotate.
  • a special feature of the invention is that the material to be mixed can only flow axially through the stator in the gap 14 between the stator teeth 12 and the rotor teeth 11, since the stator is closed radially.
  • the stator 9 is screwed to an installation flange 16 by means of two bolts 15.
  • two bolts 15 For example, it is possible to provide one or both of these bolts with a through-bore 17 so that liquid or another component can be transported from the outside into the grinding area.
  • FIG. 3 shows a side view of the rotor 8 with the hub 19 cut open.
  • FIG. 4 shows a view of the rotor 8 from the direction F indicated in FIG. 3.
  • FIG. 5 shows a top view of the rotor 8 from the direction G indicated in FIG. 4 and
  • FIG. 6 shows a section along the line AA indicated in FIG. 5.
  • the exemplary embodiment according to FIGS. 3 to 6 shows a rotor with four blades 13 which are offset radially by 90 ° and are arranged diagonally to the axis 10 on the hub 19.
  • the wings 13 are designed such that they also have teeth 11 arranged one behind the other in an offset corresponding to the diagonal or oblique offset to the hub 19.
  • the number of teeth 11 depends on the material to be mixed.
  • the rotor 8 has a central bore 21 for receiving the drive shaft 20 shown in FIG. 2, a groove 22 being inserted for a feather key.
  • FIGS. 7 to 9 show the stator 9, FIG. 7 a section along the section line CD indicated in FIG. 8, FIG. 9 a section along the line EE shown in FIG. 8 and FIG. 8 a section along the line indicated in FIG Show line AB.
  • the present invention proposes a method and a device with which homogeneous mixes can be created.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
EP91114415A 1990-09-05 1991-08-28 Verfahren und Vorrichtung zum Mahlen und Intensivmischen von Schüttgütern und/oder Flüssigkeiten unterschiedlicher Schüttverhalten, Dichte oder Viskosität zum Zwecke der Erreichung von homogenen Mischgütern Expired - Lifetime EP0474102B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4028108A DE4028108C1 (xx) 1990-09-05 1990-09-05
DE4028108 1990-09-05

Publications (2)

Publication Number Publication Date
EP0474102A1 EP0474102A1 (de) 1992-03-11
EP0474102B1 true EP0474102B1 (de) 1995-11-15

Family

ID=6413622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91114415A Expired - Lifetime EP0474102B1 (de) 1990-09-05 1991-08-28 Verfahren und Vorrichtung zum Mahlen und Intensivmischen von Schüttgütern und/oder Flüssigkeiten unterschiedlicher Schüttverhalten, Dichte oder Viskosität zum Zwecke der Erreichung von homogenen Mischgütern

Country Status (4)

Country Link
EP (1) EP0474102B1 (xx)
AT (1) ATE130221T1 (xx)
DE (2) DE4028108C1 (xx)
ES (1) ES2082065T3 (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200375217A1 (en) * 2018-02-14 2020-12-03 Endeco Gmbh Method and apparatus for processing legumes

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4313149C2 (de) * 1993-04-22 1997-11-06 Lipp Mischtechnik Gmbh Vorrichtung zum Mahlen und Intensivmischen von Schüttgütern und/oder Flüssigkeiten
DE4332977A1 (de) * 1993-09-28 1995-03-30 Draiswerke Gmbh Reib-Mühle und deren Verwendung
DE19515992A1 (de) * 1995-05-02 1996-11-07 Lipp Mischtechnik Gmbh Vorrichtung zum Mahlen und Mischen von Massen
DE19602581A1 (de) * 1996-01-25 1997-07-31 Draiswerke Gmbh Verfahren und Mischer zum Herstellen von Papier-Streichffarbe
EP0836880A1 (de) * 1996-10-16 1998-04-22 Clariant GmbH Mischer zum kontinuierlichen Verarbeiten von fliessfähigen Materialien
FR2777804B1 (fr) * 1998-04-23 2000-06-23 Pompes Et Melangeurs Michel Sa Dispositif melangeur a rotor et stator
DE19901305A1 (de) 1999-01-15 2000-07-20 Starck H C Gmbh Co Kg Verfahren zur Herstellung von Hartmetallmischungen
DE10012072B4 (de) * 2000-03-14 2015-08-27 Hermann Linden Gmbh & Co. Kg Inline Mischer
DE102008010841A1 (de) * 2008-02-25 2009-08-27 Lipp Mischtechnik Gmbh Mischvorrichtung mit an einem Mischbehälter befestigten Mischtopf

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972058C (de) * 1951-04-28 1959-05-14 Ernst Dipl-Ing Reiffen Ruehr- und Mischgeraet
FR1134428A (fr) * 1953-06-25 1957-04-11 Dunlop Rubber Co Appareil mélangeur perfectionné
GB777271A (en) * 1954-12-08 1957-06-19 Uberto Pinto An improved mixing and emulsifying apparatus
DE1184325B (de) * 1960-07-30 1964-12-31 Draiswerke Gmbh Mischmaschine
DE1507889A1 (de) * 1965-04-26 1970-02-12 Draiswerke Gmbh Verfahren zum Betrieb von Mischmaschinen sowie zugehoerige Mischmaschine
US3410535A (en) * 1967-01-23 1968-11-12 Leslie L. Balassa Mixing device
US3499633A (en) * 1967-11-27 1970-03-10 Richard L Bowen Jr Mixing device
US3925243A (en) * 1970-06-01 1975-12-09 Hans G Brogli Apparatus for the manufacture of emulsions
DE3313710A1 (de) * 1983-04-15 1984-10-18 Bayer Ag, 5090 Leverkusen Ruehrvorrichtung
DE3522087A1 (de) * 1985-06-20 1987-01-02 Valentin Filippovic Bolsakov Homogenisator
DE3623932A1 (de) * 1986-07-16 1988-01-21 Schneider Friedhelm Kunststoff Kombinierte misch- und foerdereinrichtung fuer hochviskose fluessigkeiten
DE3728710C2 (de) * 1987-08-28 1997-08-21 Loedige Maschbau Gmbh Geb Mischer zum Mischen von Feststoffschüttungen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200375217A1 (en) * 2018-02-14 2020-12-03 Endeco Gmbh Method and apparatus for processing legumes

Also Published As

Publication number Publication date
ES2082065T3 (es) 1996-03-16
DE59106902D1 (de) 1995-12-21
DE4028108C1 (xx) 1992-05-27
EP0474102A1 (de) 1992-03-11
ATE130221T1 (de) 1995-12-15

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