EP0474102A1 - Method and device for grinding and intensive mixing bulk material and/or liquids with different pouring capability, density or viscosity for obtaining homogeneous mixtures - Google Patents
Method and device for grinding and intensive mixing bulk material and/or liquids with different pouring capability, density or viscosity for obtaining homogeneous mixtures Download PDFInfo
- Publication number
- EP0474102A1 EP0474102A1 EP91114415A EP91114415A EP0474102A1 EP 0474102 A1 EP0474102 A1 EP 0474102A1 EP 91114415 A EP91114415 A EP 91114415A EP 91114415 A EP91114415 A EP 91114415A EP 0474102 A1 EP0474102 A1 EP 0474102A1
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- EP
- European Patent Office
- Prior art keywords
- grinding
- rotor
- stator
- mill
- speed
- Prior art date
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Links
- 238000000227 grinding Methods 0.000 title claims abstract description 44
- 238000002156 mixing Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 13
- 239000007788 liquid Substances 0.000 title claims description 7
- 239000008240 homogeneous mixture Substances 0.000 title description 2
- 239000013590 bulk material Substances 0.000 title 1
- 239000000203 mixture Substances 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000000265 homogenisation Methods 0.000 claims description 3
- 230000002706 hydrostatic effect Effects 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 230000009969 flowable effect Effects 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000013641 positive control Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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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
- B01F27/70—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 and a device for grinding and intensive mixing of bulk goods and liquids of different bulk behavior, density or viscosity for the purpose of achieving homogeneous mixed goods.
- 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 intensely swirled.
- mixers of the type mentioned at the outset to arrange mills transverse to the axially extending mixing elements, to which the mixing components are fed through the mixing elements.
- knife mills or rotor / stator mills are used here.
- Rotor / stator mills are based on the principle of forced reduction, in which 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 achieve a shearing effect during the shredding in order to prevent or dissolve lumps when mixing and drying, for example, extremely moist mixed materials.
- a disadvantage of the design of this mill is that both mill elements, rotor and stator, can be flowed through axially and radially, the radial flow through the stator in particular producing unsatisfactory mixing results.
- the present invention is therefore based on the object of providing a method and a device in which the mixing components are subjected to a positive control, in which the mixing components can only flow axially through at least one mill element, which leads to a homogeneous mixture.
- the method for grinding and intensive mixing of bulk goods and / or liquids of different bulk behavior, density or viscosity for the purpose of achieving homogeneous mixed goods mixes the mixing components within a container by means of mixing tools and mill elements, the mixing components being subjected to a forced flow, in that they pass through a mill consisting of at least two grinding elements that are freely movable with respect to one another and that at least one grinding element causes the product movement in the axial and radial directions and that at least one further element can only be flowed through axially.
- the device for carrying out the method according to the invention is designed as a mixer with a container and preferably a concentrically arranged mixer and consists of a shaft with radially arranged arms with mixing tools and at least one built-in mill arranged on the container wall, the grinding elements of the mill being arranged so that the Mixing tools can be moved between the container and grinding elements.
- the mill is made of at least two concentrically arranged grinding elements that are freely movable against each other.
- At least one of these grinding elements allows product movement in the axial and radial directions and at least one further grinding element can only be flowed through axially, in which at least one pair of elements is designed to interlock.
- a grinding element is preferably designed as a rotor and at least one further grinding element as a stator.
- the outer grinding element is preferably the stator and the inner one is the rotor.
- the rotor and the stator have teeth of different sizes and shapes. They preferably have a trapezoidal shape, as a result of which they automatically form cutting edges.
- the rotor has at least two vanes, which are positioned in relation to the longitudinal axis of the turbo-mill in such a way that the mix is subjected to a targeted transport component in the axial direction, the direction of transport being able to change from case to case.
- the rotor and the stator are preferably toothed in such a way that the grinding edges mesh with one another. It makes sense to manufacture the grinding elements from particularly wear-resistant material.
- the stator is screwed to an installation flange, at least one of these bolts being able to be drilled through in the longitudinal direction, so that liquid or a mixture component can be transported from the outside into the grinding area.
- the mill can be driven at variable speed so that the grinding behavior can be adapted to the respective product.
- a preferred embodiment of the stator and the rotor provides for the opening to be conical in the direction of transport or for the stator and rotor to be tapered in the direction of transport.
- the stator is designed as a jacket for the purpose of preventing radial flow.
- the grinding elements of the stator designed as teeth are created by the arrangement of preferably semicircular notches.
- the rotor has an axial extension, the grinding gap being formed on the end face of the rotor and the stator teeth.
- the cutting edges are arranged in the radially outer area in such a way that a free passage is formed in the center. In order to prevent the stator from escaping, it is designed to be radially closed.
- the cutting edges are arranged on the end faces of the wings and thus axially aligned.
- a speed control is preferably assigned to the device, the drive power being kept constant by speed control via suitable regulators, despite the changing consistency of the mix.
- the rotational speed of the rotor can be used to determine both the axial delivery rate and the shear work in the grinding gaps and thus also the drive power of the rotor.
- the speed is adjusted by measuring the drive power of the driving motor.
- the speed adjustment can also be carried out, for example, by means of a pole-changing three-phase motor, a hydrostatic drive system, a three-phase motor with a static frequency converter, a direct current motor with a current regulator, or also by means of mechanical speed variators, such as adjusting gears or spreading belt drives in connection with three-phase motors.
- 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. This arrangement already whirls the mix.
- 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 which corresponds 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 hole 17 so that liquid or another component can be transported from the outside into the grinding area.
- Figures 3 to 6 show the rotor according to the invention in different views.
- 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 plan view of the rotor 8 from the direction G and the direction indicated in FIG
- FIG. 6 shows a section along the line A-A indicated in Figure 5.
- the exemplary embodiment according to FIGS. 3 to 6 shows a rotor with four blades 13, which are radially offset by 90 and are arranged diagonally to the axis 10 on the hub 19.
- the vanes 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 mi send good.
- 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 indicated in FIG. 9 and FIG. 8/8 a section along the line in FIG 7 indicated line AB represent.
- the present invention proposes a method and a device with which homogeneous mixes can be created.
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- 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)
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Mahlen und Intensivmischen von Schüttgütern und Flüssigkeiten unterschiedlicher Schüttverhalten, Dichte oder Viskosität zum Zwekke der Erreichung von homogenen Mischgütern.The invention relates to a method and a device for grinding and intensive mixing of bulk goods and liquids of different bulk behavior, density or viscosity for the purpose of achieving homogeneous mixed goods.
Bei der Herstellung von Mischgütern in der Pharmazie-, Kosmetik-, Chemie-, Kunststoff- und Nahrungsmittelindustrie sowie artverwandten Bereichen wird stets eine homogene Struktur des Mischgutes angestrebt.In the production of mixed goods in the pharmaceutical, cosmetic, chemical, plastic and food industries as well as related areas, a homogeneous structure of the mixed material is always sought.
Hierzu sind Mischer bekannt, die aus einer eigentlichen Mischtrommel bestehen, in denen zentrisch eine Welle angeordnet ist, auf der Mischelemente befestigt sind. Diese Welle mit den Mischelementen wird über ein Antriebssystem, meist bestehend aus Elektromotor, Keilriementrieb und Untersetzungsgetriebe, angetrieben. Durch die besondere Formgebung der Mischelemente und deren Anordnung auf der Welle wird das Mischgut intensiv durchwirbelt.For this purpose, mixers are known 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 intensely swirled.
Um nun den Grad der Homogenisierung zu verbessern, ist es bei Mischern der eingangs genannten Art bekannt, quer zu den axial verlaufenden Mischelementen, Mühlen anzuordnen, denen die Mischungskomponenten durch die Mischelemente zugeführt werden. Es finden hierbei sogenannte Messermühlen oder auch Rotor-/Statormühlen Anwendung.In order to improve the degree of homogenization, it is known in mixers of the type mentioned at the outset to arrange mills transverse 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-/Statormühlen basieren hierbei auf dem Wirkprinzip der Zwangsverkleinerung, in dem die Komponenten zerteilt, zerfasert und dispergiert werden. Die Messermühlen basieren auf dem Wirkprinzip der Prallzerkleinerung, wobei die Komponenten zerteilt, zerfasert, dispergiert und verdichtet werden.Rotor / stator mills are based on the principle of forced reduction, in which 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.
In der DE-OS 37 28 710 ist ein Mischer beschrieben, der einen an der Behälterwand angeordneten Zerkleinerer aufweist. Mit diesem Zerkleinerer soll erreicht werden, daß sich beim Zerkleinern eine Scherwirkung ergibt, um beim Vermischen und Trocknen beispielsweise extrem feuchter Mischgüter eine Klumpenbildung zu verhindern bzw. aufzulösen.DE-OS 37 28 710 describes a mixer which has a shredder arranged on the container wall. The purpose of this shredder is to achieve a shearing effect during the shredding in order to prevent or dissolve lumps when mixing and drying, for example, extremely moist mixed materials.
Nachteilig an der Ausbildung dieser Mühle ist, daß beide Mühlenelemente, Rotor und Stator, axial und radial durchströmbar sind, wobei insbesondere die radiale Durchströmbarkeit des Stators unbefriedigende Mischergebnisse erzeugt.A disadvantage of the design of this mill is that both mill elements, rotor and stator, can be flowed through axially and radially, the radial flow through the stator in particular producing unsatisfactory mixing results.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zu schaffen, bei der die Mischkomponenten einer Zwangsführung unterworfen werden, bei der die Mischkomponenten zumindest ein Mühlenelement nur axial durchströmen können, was zu einem homogenen Mischgut führt.The present invention is therefore based on the object of providing a method and a device in which the mixing components are subjected to a positive control, in which the mixing components can only flow axially through at least one mill element, which leads to a homogeneous mixture.
Diese Aufgabe wird erfindungsgemäß durch ein Verfahren gemäß Anspruch 1 gelöst. Ein besonderes Merkmal des Verfahrens ist im Unteranspruch 2 gekennzeichnet. Die Vorrichtung zur Durchführung des Verfahrens gemäß Anspruch 3 weist die in den Ansprüchen 4 bis 16 besonders bevorzugten Ausführungsarten auf.This object is achieved according to the invention by a method according to claim 1. A special feature of the method is characterized in
Hierbei ist vorgesehen, daß das Verfahren zum Mahlen und Intensivmischen von Schüttgütern und/oder Flüssigkeiten unterschiedlicher Schüttverhalten, Dichte oder Viskosität zum Zwecke der Erreichung von homogenen Mischgütern die Mischkomponenten innerhalb eines Behälters mittels Mischwerkzeugen und Mühlelementen vermischt, wobei die Mischkomponenten einer Zwangsdurchströmung unterzogen werden, in dem diese eine Mühle aus mindestens zwei konzentrisch gegeneinander frei beweglichen Mahlelementen durchlaufen und hierbei mindestens ein Mahlelement die Produktbewegung in axialer und radialer Richtung verursacht und mindestens ein weiteres Element nur axial durchströmbar ist. Zuzüglich ist es möglich, gemäß dem erfindungsgemäßen Verfahren, dem Mischgut von außen, durch die Mühle hindurch, in der die Homogenisierung stattfindet, eine Mischkomponente zuzuführen.It is provided that the method for grinding and intensive mixing of bulk goods and / or liquids of different bulk behavior, density or viscosity for the purpose of achieving homogeneous mixed goods mixes the mixing components within a container by means of mixing tools and mill elements, the mixing components being subjected to a forced flow, in that they pass through a mill consisting of at least two grinding elements that are freely movable with respect to one another and that at least one grinding element causes the product movement in the axial and radial directions and that at least one further element can only be flowed through axially. In addition, according to the method according to the invention, it is possible to add a mixed component to the mix from the outside, through the mill in which the homogenization takes place.
Die Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens ist als Mischer mit einem Behälter und vorzugsweise konzentrisch angeordnetem Mischwerk ausgebildet und besteht aus einer Welle mit radial angeordneten Armen mit Mischwerkzeugen und mindestens einer an der Behälterwand angeordneten Einbaumühle, wobei die Mahlelemente der Mühle so angeordnet sind, daß die Mischwerkzeuge zwischen Behälter und Mahlelemente bewegt werden können. Hierbei ist die Mühle mindestens aus zwei konzentrisch angeordneten Mahlelementen geschaffen, die gegeneinander frei beweglich sind.The device for carrying out the method according to the invention is designed as a mixer with a container and preferably a concentrically arranged mixer and consists of a shaft with radially arranged arms with mixing tools and at least one built-in mill arranged on the container wall, the grinding elements of the mill being arranged so that the Mixing tools can be moved between the container and grinding elements. Here, the mill is made of at least two concentrically arranged grinding elements that are freely movable against each other.
Mindestens eines dieser Mahlelemente erlaubt eine Produktbewegung in axialer und radialer Richtung und mindestens ein weiteres Mahlelement ist lediglich axial durchströmbar, in dem mindestens ein Elementenpaar ineinandergreifend ausgebildet ist. Bevorzugterweise ist bei der Mühle ein Mahlelement als Rotor und mindestens ein weiteres Mahlelement als Stator ausgebildet.At least one of these grinding elements allows product movement in the axial and radial directions and at least one further grinding element can only be flowed through axially, in which at least one pair of elements is designed to interlock. In the mill, a grinding element is preferably designed as a rotor and at least one further grinding element as a stator.
Bevorzugterweise ist das äußere Mahlelement der Stator und das innere der Rotor. Der Rotor und der Stator weist Zähne unterschiedlicher Größe und Form auf. Vorzugsweise haben diese trapezoide Form, wodurch sie automatisch Schneidkanten bilden. Der Rotor weist mindestens zwei Flügel auf, die so zur Längsachse der Turbomühle angestellt sind, daß das Mischgut eine gezielte Transportkomponente in axialer Richtung erfährt, wobei von Fall zu Fall die Transportrichtung wechseln kann. Der Rotor und der Stator sind bevorzugterweise so gezahnt, daß die Mahlkanten kämmend ineinandergreifen. Es bietet sich an, die Mahlelemente aus besonders verschleißfestem Material zu fertigen. Durch Befestigungsmittel beispielsweise mittels zweier Bolzen ist der Stator mit einem Einbauflansch verschraubt, wobei mindestens einer dieser Bolzen in Längsrichtung durchbohrt sein kann, so daß Flüssigkeit bzw. eine Mischungskomponente von außen in den Mahlbereich transportiert werden kann. Der Antrieb der Mühle ist mit variabler Geschwindigkeit möglich, so daß das Mahlverhalten dem jeweiligen Produkt anpassbar ist. Eine bevorzugte Ausführungsform des Stators und des Rotors sieht vor, in Transportrichtung konisch öffnend gestaltet zu sein bzw. daß Stator und Rotor in Transportrichtung verjüngend ausgebildet sind.The outer grinding element is preferably the stator and the inner one is the rotor. The rotor and the stator have teeth of different sizes and shapes. They preferably have a trapezoidal shape, as a result of which they automatically form cutting edges. The rotor has at least two vanes, which are positioned in relation to the longitudinal axis of the turbo-mill in such a way that the mix is subjected to a targeted transport component in the axial direction, the direction of transport being able to change from case to case. The rotor and the stator are preferably toothed in such a way that the grinding edges mesh with one another. It makes sense to manufacture the grinding elements from particularly wear-resistant material. By means of fastening means, for example by means of two bolts, the stator is screwed to an installation flange, at least one of these bolts being able to be drilled through in the longitudinal direction, so that liquid or a mixture component can be transported from the outside into the grinding area. The mill can be driven at variable speed so that the grinding behavior can be adapted to the respective product. A preferred embodiment of the stator and the rotor provides for the opening to be conical in the direction of transport or for the stator and rotor to be tapered in the direction of transport.
Der Stator ist zum Zwecke der Verhinderung einer radialen Durchströmung als Mantel ausgebildet.The stator is designed as a jacket for the purpose of preventing radial flow.
Die als Zähne ausgebildeten Mahlelemente des Stators sind durch die Anordnung von vorzugsweise halbkreisförmigen Einkerbungen geschaffen.The grinding elements of the stator designed as teeth are created by the arrangement of preferably semicircular notches.
Es es also ein Merkmal der Erfindung, daß der Rotor eine axiale Ausdehnung besitzt, wobei der Mahlspalt stirnseitig des Rotors und der Statorzähne gebildet wird.It is therefore a feature of the invention that the rotor has an axial extension, the grinding gap being formed on the end face of the rotor and the stator teeth.
Die Schneidkanten sind im radial äußeren Bereich angeordnet, derart, daß im Zentrum ein freier Durchgang gebildet ist. Um ein Austreten am Umfang des Stators zu vermeiden, ist dieser radial geschlossen ausgebildet. Die Schneidkanten sind an den Stirnseiten der Flügel angeordnet und somit axial ausgerichtet.The cutting edges are arranged in the radially outer area in such a way that a free passage is formed in the center. In order to prevent the stator from escaping, it is designed to be radially closed. The cutting edges are arranged on the end faces of the wings and thus axially aligned.
Bevorzugter Weise ist der Vorrichtung eine Drehzahlregelung zugeordnet, wobei über geeignete Regler die Antriebsleistung, trotz sich verändernder Konsistenz des Mischgutes, durch Drehzahlregelung konstant gehalten wird. Mittels der Drehzahl des Rotors ist sowohl die axiale Förderrate, als auch die Scherarbeit in den Mahlspalten und somit auch die Antriebsleistung des Rotors bestimmbar. Die Drehzahlanpassung wird durch Messung der Antriebsleistung des antreibenden Motors vorgenommen. Die Drehzahlanpassung ist beispielsweise auch mittels eines polumschaltbaren Drehstrommotors, einem hydrostatischen Antriebssystem, einem Drehstrommotor mit statischem Frequenzumformer, mittels Gleichstrommotor mit Stromregler oder auch mittels mechanischen Drehzahlvariatoren, wie Verstellgetrieben oder Spreizscheiben-Riemengetrieben in Verbindung mit Drehstrommotoren vornehmbar.A speed control is preferably assigned to the device, the drive power being kept constant by speed control via suitable regulators, despite the changing consistency of the mix. The rotational speed of the rotor can be used to determine both the axial delivery rate and the shear work in the grinding gaps and thus also the drive power of the rotor. The speed is adjusted by measuring the drive power of the driving motor. The speed adjustment can also be carried out, for example, by means of a pole-changing three-phase motor, a hydrostatic drive system, a three-phase motor with a static frequency converter, a direct current motor with a current regulator, or also by means of mechanical speed variators, such as adjusting gears or spreading belt drives in connection with three-phase motors.
Anhand den beigefügten Zeichnungen, die besonders bevorzugte Ausführungsbeispiele der Erfindung zeigen, wird diese nun näher erläutert.With reference to the accompanying drawings, which show particularly preferred exemplary embodiments of the invention, this will now be explained in more detail.
Dabei zeigen:
- Figur 1: Eine perspektivische Darstellung eines ansich bekannten Mischers, in den erfindungsgemäß die
Mühle 7 eingebaut ist. - Figur 2: Der Rotor-/Statorkopf der Mühle in montiertem Zustand
Figur 3 bis 6: Den Rotor in verschiedenen AnsichtenFigur 7 bis 9: Den Stator in verschiedenen Ansichten.
- Figure 1: A perspective view of a known mixer, in which the
mill 7 is installed according to the invention. - Figure 2: The rotor / stator head of the mill in the assembled state
- Figure 3 to 6: The rotor in different views
- Figure 7 to 9: The stator in different views.
Die Figur 1 zeigt die perspektivische Darstellung eines ansich bekannten Mischers 1. Dieser weist eine Mischtrommel 2 auf, die beidseitig mit Stirnwänden 3 verschlossen ist. Zentrisch befindet sich eine Welle 4, auf der eine Vielzahl von Mischelementen 5 angeordnet sind. Die Mischelemente 5 sind auf der Welle 4 verschweißt oder in auf der Welle verschweißten Taschen verschraubt. Die Welle 4 mit den Mischelementen 5 wird über einen Elektromotor 6 angetrieben. Durch diese Anordnung wird das Mischgut bereits durchwirbelt. Bevorzugterweise im unteren Trommelbereich erfolgt der Einbau der erfindungsgemäßen Rotor- /Statormühle 7. Diese Mühle 7 bzw. deren Rotor-/Statorkopf wird nun in Figur 2 näher beschrieben.FIG. 1 shows the perspective view of a mixer 1 known per se. This has a
Die Mühle 7 besteht im wesentlichen aus einem Rotor 8 und einem Stator 9, die eine gemeinsame geometrische Achse 10 aufweisen. Der Stator 9 weist eine mit der Verzahnung 11 des Rotors 8 korrespondierende Verzahnung 12 auf, derart, daß zwischen den Verzahnungen 12 entsprechende radiale Einlässe 18 gebildet sind, in denen die Verzahnungen 11 des Rotors 8 rotieren können. Ein besonderes Merkmal der Erfindung besteht dabei darin, daß das Mischgut den Stator lediglich axial in dem Spalt 14 zwischen Statorverzahnung 12 und Rotorverzahnung 11 durchströmen kann, da der Stator radial verschlossen ist.The
Der Stator 9 ist mittels zweier Bolzen 15 mit einem Einbauflansch 16 verschraubt. Beispielsweise ist es möglich, einen dieser Bolzen oder auch beide mit einer Durchbohrung 17 zu versehen, so daß Flüssigkeit oder eine weitere Komponente von außen in den Mahlbereich transportiert werden kann.The
Die Figuren 3 bis 6 zeigen den erfindungsgemäßen Rotor in verschiedenen Ansichten.Figures 3 to 6 show the rotor according to the invention in different views.
Figur 3 zeigt eine Seitenansicht des Rotors 8 mit aufgeschnittener Nabe 19.FIG. 3 shows a side view of the
Die Figur 4 zeigt eine Ansicht des Rotors 8 aus der in Figur 3 angedeuteten Richtung F.FIG. 4 shows a view of the
Figur 5 zeigt eine Draufsicht auf den Rotor 8 aus der in Figur 4 angedeuteten Richtung G und dieFIG. 5 shows a plan view of the
Figur 6 einen Schnitt entlang der in Figur 5 angedeuteten Linie A-A.6 shows a section along the line A-A indicated in Figure 5.
Das Ausführungsbeispiel gemäß den Figuren 3 bis 6 zeigt einen Rotor mit vier Flügeln 13, die radial um 90 versetzt und diagonal zur Achse 10 auf der Nabe 19 angeordnet sind. Die Flügel 13 sind derart ausgebildet, daß sie entsprechend des diagonalen oder schrägen Versatzes zur Nabe 19 hintereinander ebenfalls in einem Versatz angeordnete Verzahnungen 11 aufweisen. Die Anzahl der Verzahnungen 11 richtet sich nach dem zu mischenden Gut. Der Rotor 8 weist zur Aufnahme der in Figur 2 gezeigten Antriebswelle 20 im Narbenbereich eine zentrische Bohrung 21 auf, wobei eine Nut 22 für eine Passfeder eingelassen ist.The exemplary embodiment according to FIGS. 3 to 6 shows a rotor with four
Die Figuren 7 bis 9 zeigen den Stator 9, wobei die Figur 7 einen Schnitt entlang der in Figur 8 angedeuteten Schnittlinie C-D, die Figur 9 einen Schnitt entlang der in Figur 9 angedeuteten Linie E-E und die Figur 8/8 einen Schnitt entlang der in Figur 7 angedeuteten Linie A-B darstellen.FIGS. 7 to 9 show the
Besonders herauszuheben sind in diesen Darstellungen die kreisförmigen Durchtrittsspalten (14) bzw. radialen Einlässe 18.Of particular note in these representations are the circular passage gaps (14) or
Mit der vorliegenden Erfindung wird ein Verfahren und eine Vorrichtung vorgeschlagen, mit denen homogene Mischgüter geschaffen werden können.The present invention proposes a method and a device with which homogeneous mixes can be created.
- 1. Mischer1. Mixer
- 2. Mischtrommel2. Mixing drum
- 3. Stirnwände3. end walls
- 4. Welle4th wave
- 5. Mischelemente5. Mixing elements
- 6. E-Motor6.E-motor
- 7. Mühle7. Mill
- 8. Rotor8. Rotor
- 9. Stator9. Stator
- 10. Längsachse von 710. Longitudinal axis of 7
- 11. Zähne (Rotor)11. Teeth (rotor)
- 12. Zähne (Stator)12. Teeth (stator)
- 13. Flügel13. Wing
- 14. Durchtrittsspalten14. Passage columns
- 15. Bolzen15. Bolt
- 16. Einbauflansch16. Installation flange
- 17. Durchbohrung17. Piercing
- 18. Radiale Einkerbungen18. Radial notches
- 19. Nabe19. Hub
- 20. Antriebswelle20. Drive shaft
- 21. Wellenbohrung in 1921st shaft drilling in 19th
- 22. Nut22. Groove
Claims (31)
dadurch gekennzeichnet,
daß die Mischungskomponenten einer Zwangsdurchpressung unterzogen werden, in dem diese eine Mühle aus mindestens zwei konzentrischen gegeneinander frei beweglichen Mahlelementen durchlaufen, wobei mindestens ein Mahlelement die Produktbewegung in axialer und radialer Richtung verursacht und mindestens ein weiteres Element nur axial durchströmbar ist.1. Process for grinding and intensive mixing of bulk goods and / or liquids of different bulk behavior, density or viscosity for the purpose of achieving homogeneous mixed goods, the mixing components being mixed within a container by means of mixing tools and grinding elements,
characterized,
that the mixture components are subjected to a forced pressing, in that they pass through a mill consisting of at least two concentric, mutually freely movable grinding elements, at least one grinding element causing the product movement in the axial and radial directions and at least one further element being able to flow only axially.
dadurch gekennzeichnet,
daß dem Mischgut von außen, durch die Mühle hindurch, in der die Homogenisierung stattfindet, eine Mischungskomponente zugeführt wird.2. The method according to claim 1,
characterized,
that a mixture component is supplied to the mix from the outside, through the mill in which the homogenization takes place.
welche als Mischer mit einem Behälter und vorzugsweise konzentrisch angeordnetem Mischwerk, bestehend aus Welle und radial angeordneten Armen mit Mischwerkzeugen und mindestens einer an der Behälterwand angeordneten Einbaumühle geschaffen ist, wobei die Mahlelemente der Mühle so angeordnet sind, daß die Mischwerkzeuge zwischen Behälterwand und Mahlelementen bewegt werden können,
dadurch gekennzeichnet,
daß die Mühle (7) mindestens zwei konzentrisch angeordnete Mahlelemente (8) (9), die gegeneinander frei beweglich sind, aufweist, wobei mindestens ein Mahlelement (8) eine Produktbewegung in axialer und radialer Richtung bewirkt und mindestens ein weiteres Mahlelement (9) nur axial durchströmbar ist, in dem mindestens ein Elementenpaar ineinandergreifend ausgebildet ist.3. Device for performing the method according to claim 1 to 2,
which is created as a mixer with a container and preferably a concentrically arranged mixer, consisting of a shaft and radially arranged arms with mixing tools and at least one built-in mill arranged on the container wall, the grinding elements of the mill being arranged such that the mixing tools are moved between the container wall and grinding elements can,
characterized,
that the mill (7) has at least two concentrically arranged grinding elements (8) (9) which are freely movable relative to one another, at least one grinding element (8) causing product movement in the axial and radial directions and at least one further grinding element (9) only is axially flowable, in which at least one pair of elements is designed to interlock.
dadurch gekennzeichnet,
daß mindestens ein Mahlelement als Rotor (8) und mindestens ein weiteres Mahlelement als Stator (9) ausgebildet ist.4. The device according to claim 3,
characterized,
that at least one grinding element is designed as a rotor (8) and at least one further grinding element as a stator (9).
dadurch gekennzeichnet,
daß das äußere Mahlelement (9) als Stator und das innere Mahlelement (8) als Rotor ausgebildet ist.5. The device according to claim 4,
characterized,
that the outer grinding element (9) is designed as a stator and the inner grinding element (8) as a rotor.
vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der Rotor (8) und der Stator (9) Zähne (11) (12) unterschiedlicher Größe und Form aufweisen.6. The device according to claim 3 and at least one of the
previous claims,
characterized in that the rotor (8) and the stator (9) have teeth (11) (12) of different sizes and shapes.
dadurch gekennzeichnet,
daß die Zähne (11) (12), trapezoide Form aufweisen, die zur Bildung von Schneidkanten dienen.7. The device according to claim 6,
characterized,
that the teeth (11) (12) have a trapezoidal shape, which form the cutting edges serve.
dadurch gekennzeichnet,
daß der Rotor (8) mindestens zwei Flügel (13) aufweist, die derart zur Längsachse (10) der Turbomühle (7) angestellt sind, daß das Mischgut eine gezielte Transportkomponente in axialer Richtung erfährt.8. The device according to claim 3 and at least one of the preceding claims,
characterized,
that the rotor (8) has at least two vanes (13) which are positioned in relation to the longitudinal axis (10) of the turbo-mill (7) in such a way that the mix is subjected to a targeted transport component in the axial direction.
dadurch gekennzeicnet,
daß der Rotor (8) und der Stator (9) derart gezahnt sind, daß die Mahlkanten "kämmend" ineinander greifen.9. The device according to claim 3 and at least one of the preceding claims,
characterized by
that the rotor (8) and the stator (9) are toothed in such a way that the grinding edges "mesh" with one another.
dadurch gekennzeichnet,
daß die Mahlelemente (8) (9) aus besonders verschleißfestem Material gefertigt sind.10. The device according to claim 3 to 9,
characterized,
that the grinding elements (8) (9) are made of particularly wear-resistant material.
dadurch gekennzeichnet,
daß eine Zuführung für eine weitere Komponente von außen in den Stator- und/oder Rotorbereich vorgesehen ist.11. The device according to claim 3 to 10,
characterized,
that a supply for another component is provided from the outside in the stator and / or rotor area.
dadurch gekennzeichnet,
daß der Stator (9) durch Befestigungsmittel vorzugsweise zweier Befestigungsbolzen (15) mit einem Einbauflansch (16) verschraubt ist und zum Zwecke der Zuführung von Flüssigkeit von außen in den Mahlbereich bzw. zur Zuführung einer weiteren Mischungskomponente mindestens einer dieser Bolzen in Längsrichtung eine Durchbohrung (17) aufweist.12. The device according to claim 3 to 11,
characterized,
that the stator (9) is screwed to a mounting flange (16) by means of fastening means, preferably two fastening bolts (15), and for the purpose of supplying liquid from the outside into the grinding area or for supplying a further mixture component at least one of these bolts in the longitudinal direction a through-bore ( 17).
dadurch gekennzeichnet,
daß die Mühle (7) mit variabler Geschwindigkeit antreibbar ist.13. The apparatus of claim 3 to 12,
characterized,
that the mill (7) can be driven at variable speed.
dadurch gekennzeichnet,
daß der Stator (9) und/oder der Rotor (8) in Transportrichtung konisch öffnend ausgestaltet ist/sind.14. The device according to claim 3 and at least one of the preceding claims,
characterized,
that the stator (9) and / or the rotor (8) is / are designed to open conically in the transport direction.
dadurch gekennzeichnet,
daß der Stator (9) und/oder der Rotor (8) in Transportrichtung verjüngend ausgestaltet ist/sind.15. The apparatus according to claim 3 and at least one of the preceding claims,
characterized,
that the stator (9) and / or the rotor (8) is / are designed to taper in the transport direction.
dadurch gekennzeichnet,
daß der Stator (9) radial geschlossen ist.16. The apparatus of claim 3 and at least one of the preceding claims,
characterized,
that the stator (9) is closed radially.
dadurch gekennzeichnet,
daß die als Zähne (12) ausgebildeten Mahlelemente des Stators (9) durch die Anordnung von vorzugsweise halbkreisförmigen Einkerbungen (18) geschaffen sind.17. The apparatus according to claim 3 and at least one of the preceding claims,
characterized,
that the grinding elements of the stator (9) designed as teeth (12) are created by the arrangement of preferably semicircular notches (18).
dadurch gekennzeichnet,
daß der Rotor (8) eine axiale Ausdehnung aufweist.18. The apparatus according to claim 3 and at least one of the preceding claims,
characterized,
that the rotor (8) has an axial extent.
dadurch gekennzeichnet,
daß der Rotor (8) eine axiale Ausdehnung aufweist, wobei der Mahlspalt (14) stirnseitig des Rotors und der Statorzähne (12) gebildet ist.19. The apparatus according to claim 18,
characterized,
that the rotor (8) has an axial extent, the grinding gap (14) being formed on the end face of the rotor and the stator teeth (12).
dadurch gekennzeichnet,
daß die Schneidkanten im radial äußeren Bereich angeordnet sind, derart, daß im Zentrum ein freier Durchgang gebildet ist.20. The apparatus according to claim 19,
characterized,
that the cutting edges are arranged in the radially outer region such that a free passage is formed in the center.
dadurch gekennzeichnet,
daß der Stator 9 radial geschlossen ist.21. The device according to claim 3 and at least one of the preceding claims,
characterized,
that the stator 9 is closed radially.
dadurch gekennzeichnet,
daß die Schneidkanten an den Stirnseiten der Flügel angeordnet und somit axial ausgerichtet sind.22. The apparatus according to claim 3 and at least one of the preceding claims,
characterized,
that the cutting edges are arranged on the end faces of the wings and are thus axially aligned.
dadurch gekennzeichnet,
daß der Vorrichtung eine Drehzahlregelung zugeordnet ist.23. The device according to claim 3 and at least one of the preceding claims,
characterized,
that the device is assigned a speed control.
dadurch gekennzeichnet,
daß über geeignete Regler die Antriebsleistung, trotz sich verändernder Konsistenz des Mischgutes, durch Drehzahlregelung konstant gehalten wird.24. The device according to claim 23,
characterized,
that the drive power is kept constant by suitable speed control, despite the changing consistency of the mix.
dadurch gekennzeichnet,
daß mittels der Drehzahl des Rotors sowohl die axiale Förderrate, als auch die Scherarbeit in den Mahlspalten und somit auch die Antriebsleistung des Rotors bestimmbar ist.25. The device according to claim 24,
characterized,
that both the axial delivery rate and the shear work in the grinding gaps and thus also the drive power of the rotor can be determined by means of the speed of the rotor.
dadurch gekennzeichnet,
daß die Drehzahlanpassung durch Messung der Antriebsleistung des antreibenden Motors vorgenommen wird.26. The device according to claim 25,
characterized,
that the speed adjustment is made by measuring the drive power of the driving motor.
dadurch gekennzeichnet,
daß die Drehzahlanpassung mittels eines polumschaltbaren Drehstrommotors vorgenommen wird.27. The apparatus according to claim 23,
characterized,
that the speed adjustment is carried out by means of a pole-changing three-phase motor.
dadurch gekennzeichnet,
daß zur Drehzahlanpassung ein hydrostatisches Antriebssystem verwendet wird.28. The device according to claim 23,
characterized,
that a hydrostatic drive system is used for speed adjustment.
dadurch gekennzeichnet,
daß zur Drehzahlanpassung ein Drehstrommotor mit statischem Frequenzumformer vorgenommen wird.29. The device according to claim 23,
characterized,
that a three-phase motor with a static frequency converter is used for speed adjustment.
dadurch gekennzeichnet,
daß die Drehzahlanpassung mittels eines Gleichstrommotors mit Stromregler erfolgt.30. The device according to claim 23,
characterized,
that the speed is adjusted by means of a DC motor with a current regulator.
dadurch gekennzeichnet,
daß die Drehzahlanpassung mittels mechanischen Drehzahlvariatoren, wie Verstellgetrieben oder Spreizscheiben-Riemengetrieben in Verbindung mit Drehstrommotoren erfolgt.31. The device according to claim 23,
characterized,
that the speed is adjusted by means of mechanical speed variators, such as adjusting gears or spreading belt drives in connection with three-phase motors.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4028108 | 1990-09-05 | ||
| DE4028108A DE4028108C1 (en) | 1990-09-05 | 1990-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0474102A1 true EP0474102A1 (en) | 1992-03-11 |
| EP0474102B1 EP0474102B1 (en) | 1995-11-15 |
Family
ID=6413622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91114415A Expired - Lifetime EP0474102B1 (en) | 1990-09-05 | 1991-08-28 | Method and device for grinding and intensive mixing bulk material and/or liquids with different pouring capability, density or viscosity for obtaining homogeneous mixtures |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0474102B1 (en) |
| AT (1) | ATE130221T1 (en) |
| DE (2) | DE4028108C1 (en) |
| ES (1) | ES2082065T3 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0740953A1 (en) * | 1995-05-02 | 1996-11-06 | LIPP Mischtechnik GmbH | Device for grinding and mixing masses |
| EP0836880A1 (en) * | 1996-10-16 | 1998-04-22 | Clariant GmbH | Mixer for the continuous processing of flowable materials |
| FR2777804A1 (en) * | 1998-04-23 | 1999-10-29 | Pompes Et Melangeurs Michel Sa | Submerged mixer for producing emulsions |
| US6626975B1 (en) | 1999-01-15 | 2003-09-30 | H. C. Starck Gmbh & Co. Kg | Method for producing hard metal mixtures |
| EP2092975A3 (en) * | 2008-02-25 | 2009-09-02 | LIPP Mischtechnik GmbH | Mixing device with a mixing bowl fixed to a mix container |
| DE10012072B4 (en) * | 2000-03-14 | 2015-08-27 | Hermann Linden Gmbh & Co. Kg | Inline mixer |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4313149C2 (en) * | 1993-04-22 | 1997-11-06 | Lipp Mischtechnik Gmbh | Device for grinding and intensive mixing of bulk goods and / or liquids |
| DE4332977A1 (en) * | 1993-09-28 | 1995-03-30 | Draiswerke Gmbh | Grinding mill and its use |
| DE19602581A1 (en) * | 1996-01-25 | 1997-07-31 | Draiswerke Gmbh | Process and mixer for making a paper coating medium |
| DE102018202275A1 (en) * | 2018-02-14 | 2019-08-14 | Endeco Gmbh | Method and device for digesting legumes |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1134428A (en) * | 1953-06-25 | 1957-04-11 | Dunlop Rubber Co | Advanced mixing device |
| GB777271A (en) * | 1954-12-08 | 1957-06-19 | Uberto Pinto | An improved mixing and emulsifying apparatus |
| DE972058C (en) * | 1951-04-28 | 1959-05-14 | Ernst Dipl-Ing Reiffen | Agitator and mixer |
| DE1184325B (en) * | 1960-07-30 | 1964-12-31 | Draiswerke Gmbh | Mixer |
| US3410535A (en) * | 1967-01-23 | 1968-11-12 | Leslie L. Balassa | Mixing device |
| DE1507889A1 (en) * | 1965-04-26 | 1970-02-12 | Draiswerke Gmbh | Method for operating mixing machines and the associated mixing machine |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3313710A1 (en) * | 1983-04-15 | 1984-10-18 | Bayer Ag, 5090 Leverkusen | STIRRING DEVICE |
| DE3522087A1 (en) * | 1985-06-20 | 1987-01-02 | Valentin Filippovic Bolsakov | Homogenizer |
| DE3623932A1 (en) * | 1986-07-16 | 1988-01-21 | Schneider Friedhelm Kunststoff | COMBINED MIXING AND CONVEYING DEVICE FOR HIGH VISCOSE LIQUIDS |
| DE3728710C2 (en) * | 1987-08-28 | 1997-08-21 | Loedige Maschbau Gmbh Geb | Mixer for mixing bulk solids |
-
1990
- 1990-09-05 DE DE4028108A patent/DE4028108C1/de not_active Expired - Lifetime
-
1991
- 1991-08-28 AT AT91114415T patent/ATE130221T1/en not_active IP Right Cessation
- 1991-08-28 EP EP91114415A patent/EP0474102B1/en not_active Expired - Lifetime
- 1991-08-28 ES ES91114415T patent/ES2082065T3/en not_active Expired - Lifetime
- 1991-08-28 DE DE59106902T patent/DE59106902D1/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE972058C (en) * | 1951-04-28 | 1959-05-14 | Ernst Dipl-Ing Reiffen | Agitator and mixer |
| FR1134428A (en) * | 1953-06-25 | 1957-04-11 | Dunlop Rubber Co | Advanced mixing device |
| GB777271A (en) * | 1954-12-08 | 1957-06-19 | Uberto Pinto | An improved mixing and emulsifying apparatus |
| DE1184325B (en) * | 1960-07-30 | 1964-12-31 | Draiswerke Gmbh | Mixer |
| DE1507889A1 (en) * | 1965-04-26 | 1970-02-12 | Draiswerke Gmbh | Method for operating mixing machines and the associated mixing machine |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0740953A1 (en) * | 1995-05-02 | 1996-11-06 | LIPP Mischtechnik GmbH | Device for grinding and mixing masses |
| EP0836880A1 (en) * | 1996-10-16 | 1998-04-22 | Clariant GmbH | Mixer for the continuous processing of flowable materials |
| FR2777804A1 (en) * | 1998-04-23 | 1999-10-29 | Pompes Et Melangeurs Michel Sa | Submerged mixer for producing emulsions |
| US6626975B1 (en) | 1999-01-15 | 2003-09-30 | H. C. Starck Gmbh & Co. Kg | Method for producing hard metal mixtures |
| DE10012072B4 (en) * | 2000-03-14 | 2015-08-27 | Hermann Linden Gmbh & Co. Kg | Inline mixer |
| EP2092975A3 (en) * | 2008-02-25 | 2009-09-02 | LIPP Mischtechnik GmbH | Mixing device with a mixing bowl fixed to a mix container |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2082065T3 (en) | 1996-03-16 |
| DE4028108C1 (en) | 1992-05-27 |
| DE59106902D1 (en) | 1995-12-21 |
| ATE130221T1 (en) | 1995-12-15 |
| EP0474102B1 (en) | 1995-11-15 |
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