EP2092975B1 - Mixing device with a mixing bowl fixed to a mix container - Google Patents
Mixing device with a mixing bowl fixed to a mix container Download PDFInfo
- Publication number
- EP2092975B1 EP2092975B1 EP09002091A EP09002091A EP2092975B1 EP 2092975 B1 EP2092975 B1 EP 2092975B1 EP 09002091 A EP09002091 A EP 09002091A EP 09002091 A EP09002091 A EP 09002091A EP 2092975 B1 EP2092975 B1 EP 2092975B1
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- European Patent Office
- Prior art keywords
- mixing
- rotor
- pot
- arms
- wall
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- 238000002156 mixing Methods 0.000 title claims abstract description 192
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 230000000694 effects Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 17
- 239000000463 material Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid 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
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
- B01F27/1123—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades sickle-shaped, i.e. curved in at least one direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/17—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing
- B01F27/172—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing for cutting, e.g. with knives
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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
- B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
- B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
- B01F27/2722—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces provided with ribs, ridges or grooves on one surface
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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
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
-
- 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
- B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
- B01F33/813—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles mixing simultaneously in two or more mixing receptacles
-
- 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
- B01F33/83611—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by cutting
Definitions
- the invention relates to a mixing device with a mixing container in which a mixing tool is gebart, which sweeps over the wall of the mixing container, wherein on the said wall outside an open to the interior of the mixing container, a depth having mixing pot is mounted, in which a rotor with rotor arms, the having a Mischgut ausierde effect to rotate a directed towards the interior of the mixing container axis without the rotor arms approached from the mixing pot.
- the mixing container for such a mixing device may preferably be a substantially horizontally oriented mixing trough. However, a corresponding mixing container can also be aligned substantially vertically with its center axis.
- the mixing container can be installed pneumatically operated mixer or known mixing tools plowshare mixer, paddle mixer, screw conveyor, conical screw mixer, either with a central screw or with on the container wall by a rotating arm along guided screw, which rotates around itself, etc.
- the mixing device described herein may be used to mix products together or to increase the mixing intensity, or to achieve a comminution value.
- the mixing device described works like a conventional mill. This is understood in the context of the present invention as interchangeable.
- such a mixing device can also be used to prevent the formation of too large particles in mixing, drying or reaction processes or to produce emulsions or dispersions as well as for the dissolution of solids in liquids etc.
- the drive shafts of such rotors placed in the interior of a mixing container are heavily strained for bending by product portions which are passed past them and in some cases compressed by the mixing tools of the mixing apparatus.
- the drive shafts must therefore be designed for a corresponding bending stress, so that they are thicker than in a pure torsional load. This in turn leads to an enlargement of not painted by mixing tools areas of Misch electerwandung.
- the corresponding rotors can not be chosen arbitrarily large. It is therefore used in larger mixing devices instead of a large rotor or a few large rotors many smaller rotors. But this also leads to an increased number of engines, many expensive seals for the implementation of drive shafts through the mixing tank wall and also to a high installation costs associated with it.
- the invention is based on the finding that in the from the DE 1 184 325 Known device the knife rings over the entire clear width of the mixing pot Mischgut in the mixing pot hinein wisht or have conveyed out of this at the bottom of the mixing pot again.
- a mixed material flow directed into the interior of the mixing container is produced only in an annular region of the clear width of the mixing pot. This flow bridges the entire depth of the mixing pot.
- a suction of mixing material to the bottom of the mixing pot is generated by the annular flow in the opposite direction in the not swept by the rotor arms areas.
- the swept over by the rotor arms annular region can be found radially outwardly in the mixing pot.
- mixed material reaches the bottom of the mixing pot, where it meets the rotating rotor arms and is pressed outwards by the centrifugal force, and then again in the radially outer annular regions of the mixing pot to be guided or pressed to the interior of the mixing container.
- the cutting blades can be mounted both radially inward and radially outward on the rotor arms.
- the rotor arms mesh to form Mahlspalten with radially projecting from the mixing pot wall stator teeth.
- the mixing bowls provided are particularly suitable since they can be provided with a corresponding feed opening for the liquid addition.
- a feed opening be arranged the wall of the mixing pot, since in particular in rotor / stator designs in zones of high shear, a particularly intensive mixing of liquid can be achieved.
- a corresponding mixing pot can also be provided with a closable discharge opening for the mixing device.
- This discharge opening can be relatively easily realized in such a mixing pot constructively, for example, on the wall of the mixing pot. It is easily possible with a device according to the invention to rotate the drive motor for a rotor in a direction opposite to the usual directions of work in the mixing pot in order to promote Mischgut from the mixing container.
- FIG. 1 recognizes the sectional view through a mixing pot 1 as a schematic diagram.
- This mixing pot is attached via a flange 2 to the container wall 3 of a mixing container.
- the flange 2 of the mixing pot 1 is attached to a flange collar 5, via which the interior of the mixing pot 1 opens to the interior of the mixing container.
- the height of the mixing pot 1 and the height of the flange collar 5 total of the depth 6 of the mixing pot.
- the mixing pot 1 By circulating on the container wall channels 4, the mixing pot 1 can be heated or cooled and thus the mixture in the mixing pot 1 heat supplied or withdrawn.
- a shaft 7 is provided which carries a rotor 8 at its end located within the mixing pot 1 end.
- the rotor 8 can be rotated about the axis 9, which is directed to the interior of the mixing container.
- the rotor 8 carries at its radially outer ends rotor arms 10, which have in the axial extent substantially a length corresponding to the depth 6 of the mixing pot.
- the mixing vessel facing ends of the rotor arms 10 are within the mixing pot 1. During a rotation of the rotor arms 10 so they can not collide with a mixing tool that touches within the mixing container on the container wall 3.
- FIG. 3 shows that the rotor arms 10 are inclined relative to the rotational direction 12 of the rotor 8 to the rear, so that in the mixing pot 1 befindliches mix is conveyed by the rotor 10 in the axial direction from the mixing pot 1 into the interior of the mixing vessel.
- This axial promotion is supported by further rotor arms 13, which, as in the FIG. 2 represented, are also present on the rotor 8.
- the rotor arms 13 have with respect to the rotational direction 12 a slope, as shown in the FIG. 4 is shown.
- Both the rotor arms 10 and the rotor arms 13 mesh with stator teeth 14 which project radially inward on the wall of the mixing pot 1 in the radial direction. Between these stator teeth 14 and the rotor arms 10 and 13, respectively, narrow grinding gaps 15 are formed, which lead to a high shear of mixing material in the mixing pot.
- the mix is crushed by the rotor arms 10 and 13 in connection with the stator teeth 14 through the grinding gaps 15.
- a liquid supply 25 is also provided. Through this liquid can be introduced in the region of highest shear in the mix and distributed in this.
- the rotor 8 at its radial ends rotor arms 17 which sweep over a radially outer annular region which extends over the entire depth 6 of the mixing pot 1.
- these rotor arms 17 have an inclination relative to the rotational direction 12, so that they cause the axial conveyance of the mixed material from the mixing pot 1, which simultaneously causes the intake of mixed material in the radially inner region, which then passed over the knife ring 16 and thereby mixed and / or crushed.
- FIGS. 9 to 11 rotors 8 are shown having at their radially outer ends rotor arms 18 which are occupied with extending radially cutting blades 19. It is in the FIG. 9 to recognize that there exist all existing cutting blades of the rotor arms 18 radially inwardly, while in the FIG. 10 is shown that the cutting blades 19 are mounted on the different rotor arms 18 alternatively radially inward or radially outward. In the FIG. 11 one recognizes further a rotor 8, in which the cutting blades 19 are only partially provided on the rotor arms 18 present there. The other rotor arms are mainly used for axial ejection of mix.
- the rotor arms 18 themselves are again made in a length so that they extend in their rotation substantially over the entire depth of the mixing pot, in which they are used without protruding from the mixing pot.
- a mixing pot not only can have the substantially cylindrical shape shown in the accompanying drawings, but that also a conical shape can be used. This is depending on procedural requirement to form the mixing container opening or closing.
- mixing container 20 in the side view.
- the present case is a substantially horizontally lying mixing trough.
- mixing pots 1 are provided over the circumference at any axial points, in which case only one drive motor 21 is shown by several of the rotors present in these mixing pots. These drive motors are flanged in a known manner to the mixing pots 1, where they are connected to the shafts 7.
- FIG. 13 recognizes the mixing container 20 in axial view, wherein in this mixing container, a mixing tool, not shown, rotates in the direction of the arrow 22.
- the mixing pots are preferred arranged in the range between 3:00 and 11:00 clock, since in this area the mix contained in the mixing container 20 is moved by the mixing tool and thus there is particularly good in the mixing pots to withdraw and back into the interior of the mixing pot.
- FIG. 14 It is also shown that the wall 23 of the mixing pot 1 is provided with a closable discharge opening 24 for the mixing container 20.
- the rotor located within the mixing pot 1 is preferably moved counter to its usual direction of rotation 12 via the shaft 7.
- the mix is conveyed out of the interior of the mixing container 20 and simultaneously transported via the centrifugal force of the rotor 8 to the discharge opening 24.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Accessories For Mixers (AREA)
Abstract
Description
Die Erfindung betrifft eine Mischvorrichtung mit einem Mischbehälter in den ein Mischwerkzeug eingebart ist, das die Wandung des Mischbehälters überstreicht , wobei an der genannten Wandung außen ein zum Inneren des Mischbehälters geöffneter, eine Tiefe aufweisender Mischtopf angebracht ist, in dem ein Rotor mit Rotorarmen, die eine Mischgut auswerfende Wirkung aufweisen, um eine zum Inneren des Mischbehälters gerichtete Achse rotiert, ohne dass die Rotorarme aus dem Mischtopf heransrangen.The invention relates to a mixing device with a mixing container in which a mixing tool is gebart, which sweeps over the wall of the mixing container, wherein on the said wall outside an open to the interior of the mixing container, a depth having mixing pot is mounted, in which a rotor with rotor arms, the having a Mischgut auswerfende effect to rotate a directed towards the interior of the mixing container axis without the rotor arms approached from the mixing pot.
Bei dem Mischbehälter für eine derartige Mischvorrichtung kann es sich vorzugsweise um einen im Wesentlichen horizontal ausgerichteten Mischtrog handeln. Ein entsprechender Mischbehälter kann mit seiner Mittelachse aber auch im Wesentlichen vertikal ausgerichtet sein.The mixing container for such a mixing device may preferably be a substantially horizontally oriented mixing trough. However, a corresponding mixing container can also be aligned substantially vertically with its center axis.
In dem Mischbehälter können pneumatisch arbeitende Mischer eingebaut sein oder aber bekannte Mischwerkzeuze Pflugscharmischer, Schaufelmischer, Schneckenbandmischer, Konusschneckenmischer, sei es mit zentraler Schnecke oder aber mit an der Behälterwand durch einen sich drehenden Arm entlanggeführter Schnecke, die sich um sich selbst dreht, etc.In the mixing container can be installed pneumatically operated mixer or known mixing tools plowshare mixer, paddle mixer, screw conveyor, conical screw mixer, either with a central screw or with on the container wall by a rotating arm along guided screw, which rotates around itself, etc.
Die hier beschriebene Mischvorrichtung kann benutzt werden, um Produkte miteinander zu vermischen oder die Mischintensität zu steigern oder aber auch um eine Zerkleinerungswlrkung zu erzielen. In diesem Fall funktioniert die beschriebene Mischvorrichtung wie eine herkömmliche Mühle. Dies wird im Rahmen der hier vorliegenden Erfindung als austauschbar verstanden.The mixing device described herein may be used to mix products together or to increase the mixing intensity, or to achieve a comminution value. In this case, the mixing device described works like a conventional mill. This is understood in the context of the present invention as interchangeable.
Eine derartige Mischvorrichtung kann somit auch verwendet werden, um die Bildung von zu großen Partikeln bei Misch-, Trocknungs- oder Reaktionsvorgängen zu verhindern oder aber um Emulsionen oder Dispersionen herzustellen als auch zur Auflösung von Feststoffen in Flüssigkeiten etc.Thus, such a mixing device can also be used to prevent the formation of too large particles in mixing, drying or reaction processes or to produce emulsions or dispersions as well as for the dissolution of solids in liquids etc.
Bei derartigen Mischvorrichtungen ist es aus der
Im praktischen Einsatz haben sich diese bekannten Mischtöpfe mit Messerkränzen nicht bewährt: Die durch die einzelnen Messerkränze erzeugten ansaugenden und auswerfenden Wirkungen heben sich letztlich gegenseitig auf, so dass weder innerhalb dieser bekannten Mischtöpfe ein ausreichender Materialaustausch erfolgt noch in erheblichem Umfang Mischgut aus dem Mischbehälter entnommen und im Mischtopf verarbeitet wird. Die gewünschte Verbesserung bei der Mischwirkung der entsprechend ausgestalteten Mischvorrichtungen ergibt sich somit nicht.In practical use, these known mixing bowls with knurled rings have not been successful: The produced by the individual kneading inflating and ejecting effects ultimately cancel each other, so that neither within these known mixing pots a sufficient material exchange is still taken to a considerable extent mix from the mixing container and is processed in the mixing pot. The desired improvement in the mixing effect of appropriately designed mixing devices does not arise.
Man ging daher dazu über, entsprechende an der Wandung von Mischbehältern befestigte Mischrotoren ins Innere der Mischbehälten zu verlegen, wie es beispielsweise in der
Die Antriebswellen von derartigen in das Innere eines Mischbehälters verlegten Rotoren werden durch Produktportionen, die von den Mischwerkzeugen der Mischvorrichtung an ihnen vorbeigeführt und dabei zum Teil verdichtet werden, stark auf Biegung beansprucht. Die Antriebswellen müssen daher für eine entsprechende Biegebeanspruchung ausgelegt werden, so dass sie dicker werden als bei einer reinen Torsionsbelastung. Dies führt wiederum zu einer Vergrößerung von nicht durch Mischwerkzeuge überstrichenen Bereichen der Mischbehälterwandung.The drive shafts of such rotors placed in the interior of a mixing container are heavily strained for bending by product portions which are passed past them and in some cases compressed by the mixing tools of the mixing apparatus. The drive shafts must therefore be designed for a corresponding bending stress, so that they are thicker than in a pure torsional load. This in turn leads to an enlargement of not painted by mixing tools areas of Mischbehälterwandung.
Damit die Antriebswellen nicht zu groß werden, können auch die entsprechenden Rotoren nicht beliebig groß gewählt werden. Man verwendet deshalb bei größeren Mischvorrichtungen statt eines großen Rotors oder wenigen großen Rotoren viele kleinere Rotoren. Dies führt aber auch zu einer erhöhten Anzahl von Motoren, vielen teuren Abdichtungen für die Durchführung von Antriebswellen durch die Mischbehälterwandung und auch zu einem damit verbundenen hohen Installationsaufwand.So that the drive shafts are not too large, the corresponding rotors can not be chosen arbitrarily large. It is therefore used in larger mixing devices instead of a large rotor or a few large rotors many smaller rotors. But this also leads to an increased number of engines, many expensive seals for the implementation of drive shafts through the mixing tank wall and also to a high installation costs associated with it.
Außerdem können derartige in das Innere eines Mischbehälters verlegte Rotoren in ungünstigen Konstellationen, bei denen Fremdkörper in eine Mischvorrichtung gelangen, mit diesen und den Mischwerkzeugen kollidieren, was zur Zerstörung der Rotoren führen kann.In addition, such misplaced in the interior of a mixing vessel rotors in unfavorable constellations, in which foreign bodies enter a mixing device, collide with these and the mixing tools, which can lead to the destruction of the rotors.
Unter all diesen Aspekten ist es sinnvoll, die Rotoren in einem außen an der Wandung des Mischbehälters angebrachten Mischtopf unterzubringen.In all these aspects, it makes sense to accommodate the rotors in a mixing pot mounted outside the wall of the mixing vessel.
Es stellt sich dabei aber die Aufgabe, die oben beschriebenen Nachteile der bekannten Vorrichtung mit einem außen an der Wandung eines Mischbehälters befestigten Mischtopfes zu überwinden, so dass mit einem derart außerhalb angeordneten Mischtopf eine gewünschte Verbesserung des Mischvorganges erreicht wird.However, it raises the task of overcoming the above-described disadvantages of the known device with a mixing pot fixed on the outside of the wall of a mixing container so that a desired improvement of the mixing process is achieved with a mixing pot arranged outside this way.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Rotorarme eines im Mischtopf angeordneten Rotors gegenüber der Rotationsrichtung des Rotors nach hinten geneigt sind und nur einen radial begrenzten, aber im Wesentlichen die gesamte Tiefe des Mischtopfes umfassenden Bereich überstreichen.This object is achieved in that the rotor arms of a rotor arranged in the mixing pot with respect to the rotational direction of the rotor are inclined backwards and sweep only a radially limited, but substantially the entire depth of the mixing pot comprehensive range.
Der Erfindung liegt dabei die Erkenntnis zugrunde, dass bei der aus der
Dementgegen wird bei der erfindungsgemäßen Weiterbildung der Vorrichtung nur in einem ringförmigen Bereich der lichten Weite des Mischtopfes eine in das Innere des Mischbehälters gerichtete Mischgutströmungen erzeugt. Diese Strömung überbrückt dabei die gesamte Tiefe des Mischtopfes. Gleichzeitig wird durch die ringförmige Strömung in entgegengesetzter Richtung in den nicht von den Rotorarmen überstrichenen Bereichen ein Sog von Mischgut zum Boden des Mischtopfes erzeugt. So wird ein kontinuierlicher Austausch von Mischgut in dem Mischtopf erreicht.In contrast, in the development of the device according to the invention, a mixed material flow directed into the interior of the mixing container is produced only in an annular region of the clear width of the mixing pot. This flow bridges the entire depth of the mixing pot. At the same time a suction of mixing material to the bottom of the mixing pot is generated by the annular flow in the opposite direction in the not swept by the rotor arms areas. Thus, a continuous exchange of mix is achieved in the mixing pot.
Bei einer besonders bevorzugten Ausführungsform ist der von den Rotorarmen überstrichene ringförmige Bereich radial außenliegend im Mischtopf zu finden. Somit kann durch den radial innen bzw. mittig liegenden Bereich Mischgut bis an den Boden des Mischtopfes gelangen, wo es auf die rotierenden Rotorarme trifft und von diesen der Zentrifugalkraft folgend nach außen gedrückt wird, um dann in den radial außen liegenden ringförmigen Bereichen des Mischtopfes wieder zum Inneren des Mischbehälters geführt bzw. gedrückt zu werden. Dies baut auf besonders betriebssichere Weise eine kontinuierlich funktionierende Strömung auf, die Mischgut aus dem Mischbehälter durch den Mischtopf zurück in den Mischbehälter führt.In a particularly preferred embodiment, the swept over by the rotor arms annular region can be found radially outwardly in the mixing pot. Thus, due to the radially inner or central region, mixed material reaches the bottom of the mixing pot, where it meets the rotating rotor arms and is pressed outwards by the centrifugal force, and then again in the radially outer annular regions of the mixing pot to be guided or pressed to the interior of the mixing container. This builds on a particularly reliable way a continuously functioning flow that leads mix from the mixing tank through the mixing pot back into the mixing vessel.
Es ist dabei im Rahmen der Erfindung, das Mischgut in dem achsparallel verlaufenden, radial innenliegenden Bereich des Mischtopfes bereits über ein das Mischgut zerkleinerndes Messer zu leiten, das dort angeordnet sein kann. Dieses Messer kann, um die achsparallele mittige Strömung zu unterstützen, auch ansaugend ausgebildet sein.It is within the scope of the invention to direct the mix in the axially parallel, radially inward region of the mixing pot already on a knife comminuting the mix, which can be arranged there. This knife can, in order to support the axis-parallel central flow, also be designed to be absorbent.
Es ist dabei weiter im Rahmen der Erfindung, wenn die diesen Messern nachgeordneten Rotorarme dann ausschließlich zur Erzeugung einer radial außenliegenden Auswurfströmung für das Mischgut vorgesehen sind.It is further within the scope of the invention if the rotor arms arranged downstream of these knives are then provided exclusively for producing a radially outer ejection flow for the mix.
Es ist aber auch möglich, diese Rotorarme selbst mit entsprechenden Schneidflügeln zu besetzen, die sich dann im Wesentlichen radial erstrecken. Bei derartigen Ausführungsformen kann auf ein im radial innenliegenden Bereich angeordnetes Messer verzichtet werden. Die Zerkleinerungsfunktion dieses Messers wird durch die Schneidflügel übernommen.But it is also possible to occupy these rotor arms themselves with corresponding cutting blades, which then extend substantially radially. In such embodiments can be dispensed with a knife arranged in the radially inner region. The shredding function of this knife is taken over by the cutting blades.
Die Schneidflügel können sowohl radial innen als auch radial außen an den Rotorarmen befestigt sein.The cutting blades can be mounted both radially inward and radially outward on the rotor arms.
Es ist dabei auch im Rahmen der Erfindung, die Schneidflügel an verschiedenen Rotorarmen des gleichen Rotors innen oder außen zu montieren.It is also within the scope of the invention to mount the cutting blades on different rotor arms of the same rotor inside or outside.
Bei einer anderen Ausführungsform der Erfindung, bei der das Mischgut in verstärkter Weise Scherung und damit einer Zerkleinerung ausgesetzt werden soll, kämmen die Rotorarme unter Bildung von Mahlspalten mit radial von der Mischtopfwand vorspringenden Statorzähnen. Über die auftretende Scherung kann eine hohe Energie in das Mischgut eingebracht werden, wodurch spezielle gewünschte Eigenschaften bei dem fertigen Mischgut zu erreichen sind.In another embodiment of the invention, in which the mix is to be subjected to sheared shear and thus crushing, the rotor arms mesh to form Mahlspalten with radially projecting from the mixing pot wall stator teeth. By means of the shear which occurs, a high energy can be introduced into the mix, as a result of which special desired properties can be achieved in the finished mix.
Auch hier ist es unter konstruktiven Gesichtspunkten möglich, neben Rotorarmen, die nur eine auswerfende Wirkung haben, separate Rotorarme vorzusehen, die entsprechende Mahlspalte mit von der Mischtopfwand vorspringenden Statorzähnen bilden. Hierdurch kann Mischgut abwechselnd gefördert, geschert, gefördert usw. werden.Again, it is possible from a design point of view, in addition to rotor arms, which have only one ejection effect, provide separate rotor arms, which form corresponding Mahlspalte with protruding from the mixing pot wall stator teeth. As a result, mix can be alternately promoted, sheared, promoted, etc.
Um Pulver oder pasteusem Mischgut Flüssigkeiten zusetzen zu können, sind die vorgesehenen Mischtöpfe besonders geeignet, da sie mit einer entsprechenden Zuführöffnung für die Flüssigkeitszugabe versehen sein können. Somit wird eine intensive Vermischung der Flüssigkeit mit Mischgut innerhalb des Mischtopfes gewährleistet. Vorzugsweise wird eine derartige Zuführöffnung an der Wand des Mischtopfes angeordnet sein, da hier insbesondere bei Rotor/Stator-Konstruktionen in Zonen hoher Scherung eine besonders intensive Einmischung von Flüssigkeit erreicht werden kann.In order to be able to add fluids to powder or pasteusem material, the mixing bowls provided are particularly suitable since they can be provided with a corresponding feed opening for the liquid addition. Thus, an intensive mixing of the liquid is ensured with mix within the mixing pot. Preferably, such a feed opening be arranged the wall of the mixing pot, since in particular in rotor / stator designs in zones of high shear, a particularly intensive mixing of liquid can be achieved.
Bei einer weiter bevorzugten Ausführungsform der Erfindung kann ein entsprechender Mischtopf aber auch mit einer verschließbaren Entleerungsöffnung für die Mischvorrichtung versehen werden. Diese Entleerungsöffnung kann bei einem derartigen Mischtopf konstruktiv relativ einfach realisiert werden, beispielsweise an der Wand des Mischtopfes. Es ist dabei mit einer erfindungsgemäßen Vorrichtung leicht möglich, den Antriebsmotor für einen Rotor in einer der üblichen Arbeitsrichtungen entgegengesetzten Richtung in dem Mischtopf rotieren zu lassen, um damit Mischgut aus dem Mischbehälter herauszufördern.In a further preferred embodiment of the invention, however, a corresponding mixing pot can also be provided with a closable discharge opening for the mixing device. This discharge opening can be relatively easily realized in such a mixing pot constructively, for example, on the wall of the mixing pot. It is easily possible with a device according to the invention to rotate the drive motor for a rotor in a direction opposite to the usual directions of work in the mixing pot in order to promote Mischgut from the mixing container.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels. Dabei zeigt:
Figur 1- einen Schnitt durch einen Mischtopf mit einem Rotor, dessen Rotor- arme mit Statorzähnen kämmen als Prinzipdarstellung;
Figur 2- einen Schnitt durch einen Mischtopf mit einem um 90° gedrehten Rotor gemäß
als Prinzipdarstellung;Figur 1 Figur 3- eine Schnittansicht durch einen Rotorarm gemäß der Linie III/III in
;Figur 1 Figur 4- eine Schnittansicht durch einen Rotorarm gemäß der Linie IV/IV in
;Figur 2 Figur 5- eine Aufsicht auf einen Mischtopf gemäß den
mit Rotorarmen, die mit Statorzähnen kämmen;Figuren 1 und 2 Figur 6- einen Schnitt durch einen Mischtopf mit im radial innenliegenden Bereich angeordnetem Messer als Prinzipdarstellung;
Figur 7- eine Schnittansicht durch einen Rotorarm gemäß der Linie VII/VII in
;Figur 6 Figur 8- eine Aufsicht auf einen Mischtopf gemäß
Figur 6 ; Figur 9- eine Darstellung eines Rotors mit innenliegenden Schneidflügeln an den Rotorarmen;
Figur 10- eine Darstellung eines Rotors mit innen- und außenliegenden Schneidflügeln an den Rotorarmen;
Figur 11- eine Darstellung eines weiteren Rotors mit einzelnen an Rotorarmen außenliegenden Schneidflügeln;
Figur 12- eine Außenansicht eines Mischbehälters mit mehreren außen daran angebrachten Mischtöpfen;
Figur 13- eine Axialansicht eines Mischbehälters gemäß
Figur 12 ; Figur 14- eine Einzelansicht eines Mischtopfes gemäß der Einzelheit XIV in
.Figur 13
- FIG. 1
- a section through a mixing pot with a rotor whose rotor arms with stator teeth mesh as a schematic diagram;
- FIG. 2
- a section through a mixing pot with a 90 ° rotated rotor according to
FIG. 1 as a schematic diagram; - FIG. 3
- a sectional view through a rotor arm along the line III / III in
FIG. 1 ; - FIG. 4
- a sectional view through a rotor arm according to the line IV / IV in
FIG. 2 ; - FIG. 5
- a view of a mixing pot according to the
Figures 1 and 2 with rotor arms that mesh with stator teeth; - FIG. 6
- a section through a mixing pot with arranged in the radially inner region knife as a schematic representation;
- FIG. 7
- a sectional view through a rotor arm according to the line VII / VII in
FIG. 6 ; - FIG. 8
- a view of a mixing pot according to
FIG. 6 ; - FIG. 9
- a representation of a rotor with internal cutting blades on the rotor arms;
- FIG. 10
- a representation of a rotor with inner and outer cutting blades on the rotor arms;
- FIG. 11
- a representation of another rotor with individual on rotor arms outer cutting blades;
- FIG. 12
- an external view of a mixing container with a plurality of mixing pots attached to the outside;
- FIG. 13
- an axial view of a mixing container according to
FIG. 12 ; - FIG. 14
- a single view of a mixing pot according to the detail XIV in
FIG. 13 ,
In
Der Flansch 2 des Mischtopfes 1 wird an einem Flanschkragen 5 befestigt, über den sich das Innere des Mischtopfes 1 zum Inneren des Mischbehälters öffnet. Die Höhe des Mischtopfes 1 und die Höhe des Flanschkragens 5 ergeben insgesamt die Tiefe 6 des Mischtopfes.The
Über an der Behälterwand umlaufende Kanäle 4 kann der Mischtopf 1 erwärmt oder gekühlt werden und damit dem im Mischtopf 1 befindlichen Mischgut Wärme zugeführt oder entzogen werden.By circulating on the
Am Boden des Mischtopfes 1 ist eine Welle 7 vorgesehen, die an ihrem innerhalb des Mischtopfes 1 liegenden Ende einen Rotor 8 trägt. Über die Welle 7 kann der Rotor 8 um die Achse 9 rotiert werden, die zum Inneren des Mischbehälters gerichtet ist.At the bottom of the mixing
Der Rotor 8 trägt an seinen radial außenliegenden Enden Rotorarme 10, die in axialer Erstreckung im Wesentlichen eine Länge haben, die der Tiefe 6 des Mischtopfes entspricht. Die dem Mischbehälter zugewandten Enden der Rotorarme 10 liegen innerhalb des Mischtopfes 1. Bei einer Rotation der Rotorarme 10 können diese also nicht mit einem Mischwerkzeug kollidieren, das innerhalb des Mischbehälters über dessen Behälterwand 3 streift.The
Wesentlich ist, dass der von den Rotorarmen überstrichene radiale Bereich radial begrenzt ist, so dass beim Umlauf der Rotorarme 10 ein ringförmiger Abschnitt der im Wesentlichen kreisförmigen lichten Querschnittsfläche 11 des Mischtopfes 1 überstrichen wird, die in
In der
Auch die Rotorarme 13 haben gegenüber der Rotationsrichtung 12 eine Neigung, wie dies in der
Sowohl die Rotorarme 10 als auch die Rotorarme 13 kämmen mit Statorzähnen 14, die an der Wand des Mischtopfes 1 in Radialrichtung nach innen vorspringen vorhanden sind. Zwischen diesen Statorzähnen 14 und den Rotorarmen 10 bzw. 13 bilden sich enge Mahlspalte 15, die zu einer hohen Scherung von in dem Mischtopf befindlichen Mischgut führen.Both the
Durch die Rotation des Rotors 8 in der Rotationsrichtung 12 wird über die Rotorarme 10 bzw. 13 in einem ringförmigen, radial außenliegenden Bereich Mischgut aus dem Mischtopf heraus in das Innere des Mischbehälters gefördert. Gleichzeitig wird dadurch entlang der Achse 9 Mischgut aus dem Mischbehälter herausgesaugt, das dann auf das Ende der Welle 7 trifft und dann durch den Rotor 8 über Zentrifugalkräfte radial nach außen geführt wird, so dass es dann über die Rotorarme 10 bzw. 13 wieder in Axialrichtung in das Innere des Mischbehälters gefördert werden kann.As a result of the rotation of the
In der bisher beschriebenen Ausführungsform wird dabei das Mischgut durch die Rotorarme 10 und 13 in Zusammenhang mit den Statorzähnen 14 durch die Mahlspalte 15 zerkleinert.In the embodiment described so far, the mix is crushed by the
Im Bereich dieser Statorzähne 14 ist auch eine Flüssigkeitszuführung 25 vorgesehen. Durch diese hindurch kann Flüssigkeit im Bereich höchster Scherung in das Mischgut eingeführt und in diesem verteilt werden.In the area of these
Außer der beschriebenen Konstruktion mit Rotor und Stator an der Mischtopfwand, die für eine intensive Mischung von Mischgut benutzt werden, das aus dem Mischtopf ausgeworfen wird, ist es auch möglich, das Mischgut bei seinem axialen Eintreten in den Mischtopf über einen radial auf den inneren Bereich beschränkten Messerkranz 16 zu leiten, wie dies in den
Auch bei dieser Ausführungsform weist der Rotor 8 an seinen radialen Enden Rotorarme 17 auf, die einen radial begrenzt außenliegenden Ringbereich überstreichen, der über die gesamte Tiefe 6 des Mischtopfes 1 reicht. Wie in der
In den
Die Rotorarme 18 selbst sind wieder in einer Länge ausgeführt, so dass sie sich bei ihrer Rotation im Wesentlichen über die gesamte Tiefe des Mischtopfes erstrecken, in den sie eingesetzt werden ohne aus dem Mischtopf herauszuragen. Man erkennt in den
Es ist aber auch im Rahmen der Erfindung, wenn einzelne Rotorarme eine Neigung haben für die beschriebene axiale Förderung und andere Rotorarme mit Schneidflügeln besetzt sind. Hier wird eine Trennung von Förderung und Mischern erreicht.But it is also within the scope of the invention, if individual rotor arms have a tendency for the described axial promotion and other rotor arms are occupied with blades. Here, a separation of promotion and mixers is achieved.
In gleicher Weise können auch bei einer Ausführungsform gemäß den
Es sei an dieser Stelle auch noch erwähnt, dass ein Mischtopf nicht nur die in den beigefügten Zeichnungen dargestellte im Wesentlichen zylindrische Form haben kann, sondern dass auch eine konische Form zur Anwendung kommen kann. Diese ist je nach verfahrenstechnischer Anforderung zum Mischbehälter öffnend oder schließend auszuformen.It should also be mentioned at this point that a mixing pot not only can have the substantially cylindrical shape shown in the accompanying drawings, but that also a conical shape can be used. This is depending on procedural requirement to form the mixing container opening or closing.
In der
In der
Bei einem gedanklich in der
In der
Wenn diese Entleerungsöffnung 24 geöffnet wird, wird über die Welle 7 der innerhalb des Mischtopfes 1 vorhandene Rotor vorzugsweise entgegen seiner üblichen Rotationsrichtung 12 bewegt. Damit wird das Mischgut aus dem Inneren des Mischbehälters 20 herausgefördert und gleichzeitig über die Zentrifugalkraft des Rotors 8 zu der Entleerungsöffnung 24 verbracht. Man hat somit eine besonders gute Möglichkeit, den Mischbehälter schnell zu entleeren.When this discharge opening 24 is opened, the rotor located within the mixing
Claims (9)
- Mixing device with a mixing container (20) into which a mixing tool is incorporated that sweeps along the wall (3) of the mixing container (20) where on said wall (3) a mixing pot (1) featuring a depth (6) is mounted and which is open towards the inside of the mixing container (20) in which rotates, around an axis (9) oriented towards the interior of the mixing container (20), a rotor (8) with rotor arms (10, 17, 18) which have an effect of turning out the mixture, with the rotor arms (10, 17, 18) not extending outside of the mixing pot (1),
characterized in that the rotary arms (10, 17, 18) are inclined backwards relative to the rotational direction (12) of the rotor (8) and sweep over a radially confined area essentially covering the entire depth (6) of the mixing pot (1). - Mixing device according to Claim 1,
characterized in that the area swept by the rotary arms (10, 17, 18) is located radially outside in the mixing pot (1). - Mixing device according to Claim 1,
characterized in that within an area parallel to the axis and radially inside of the mixing pot (1) a blade (16) is located which minces the mixture. - Mixing device according to Claim 1,
characterized in that radially extending cutting blades are positioned on the rotor arms (18). - Mixing device according to Claim 1,
characterized in that the rotor arms (10) are combing, while forming grinding apertures with stator teeth (14) protruding radially from the mixing pot wall. - Mixing device according to one or several of the preceding claims,
characterized in that, in addition to rotor arms which are inclined backwards relative to the rotational direction of the rotor and which have an ejecting effect, separate rotor arms are provided which comb with stator teeth protruding from the mixing pot wall while forming grinding apertures. - Mixing device according to Claim 1,
characterized in that the mixing pot (1) features at least one feed opening (25) for adding a liquid. - Mixing device according to Claim 7,
characterized in that the feed opening(s) (25) is (are) located on the wall of the mixing pot. - Mixing device according to Claim 1,
characterized in that a lockable drain opening (24) is located on a wall of the mixing pot (1).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008010841A DE102008010841A1 (en) | 2008-02-25 | 2008-02-25 | Mixing device with mixing pot attached to a mixing container |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2092975A2 EP2092975A2 (en) | 2009-08-26 |
EP2092975A3 EP2092975A3 (en) | 2009-09-02 |
EP2092975B1 true EP2092975B1 (en) | 2011-08-10 |
Family
ID=40671082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09002091A Active EP2092975B1 (en) | 2008-02-25 | 2009-02-14 | Mixing device with a mixing bowl fixed to a mix container |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2092975B1 (en) |
AT (1) | ATE519537T1 (en) |
DE (1) | DE102008010841A1 (en) |
DK (1) | DK2092975T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109365066A (en) * | 2017-11-18 | 2019-02-22 | 深圳市叁星飞荣机械有限公司 | A kind of vertical media Ball-stirring mill with multi-stage separation and grading function |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1401799B1 (en) | 2010-09-29 | 2013-08-28 | Firex S R L | MACHINE FOR MIXING OR CUTTING, PARTICULARLY FOR THE PROCESSING OF FOOD, AGENT WITH PLANETARY MOVEMENT SHAFT |
SI24798A (en) * | 2014-08-29 | 2016-03-31 | Bsh Hišni Aparati, D.O.O., Nazarje | Knife for kitchen appliance |
DE102014116242A1 (en) | 2014-11-07 | 2016-05-12 | Uts Biogastechnik Gmbh | Stirring device for a fermenter of a biogas plant |
TWI579040B (en) * | 2015-01-14 | 2017-04-21 | Yen Chen Machinery Co Ltd | Single-axis output of the positive and negative device |
US11338258B2 (en) * | 2019-09-19 | 2022-05-24 | Limited Liability Company “Bioenergy” | Rotary-pulsation device |
CN115869826B (en) * | 2023-01-26 | 2023-10-31 | 江苏金山新材料科技有限公司 | Efficient mixing device for carbon source production and application method thereof |
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DE470802C (en) * | 1929-01-31 | Frankfurter Dampfkessel Fabrik | Mixing device with a blower wheel attached to the bottom of the mix container | |
DE1061493B (en) * | 1953-03-18 | 1959-07-16 | Hoover Ltd | Mixing device driven by an electric motor |
DE1184325B (en) | 1960-07-30 | 1964-12-31 | Draiswerke Gmbh | Mixer |
DE3332069A1 (en) * | 1983-09-06 | 1985-03-21 | Hoechst Ag | STIRRERS FOR STIRRING NEAR THE WALL |
DE3715331A1 (en) * | 1987-05-08 | 1988-12-01 | Berents Gmbh & Co Kg A | HOMOGENIZER FOR THE PRODUCTION OF FLOWABLE PRODUCTS |
DE3728710C2 (en) * | 1987-08-28 | 1997-08-21 | Loedige Maschbau Gmbh Geb | Mixer for mixing bulk solids |
DE4028108C1 (en) * | 1990-09-05 | 1992-05-27 | Imcatec-Gmbh Maschinen Fuer Die Verfahrenstechnik, 6800 Mannheim, De | |
CH688849A5 (en) * | 1993-02-25 | 1998-04-30 | Buehler Ag | Agitator mill. |
DE19515992A1 (en) | 1995-05-02 | 1996-11-07 | Lipp Mischtechnik Gmbh | Device for grinding and mixing masses |
IT1281240B1 (en) * | 1995-10-20 | 1998-02-17 | Carpigiani Group Ali Srl | PASTEURIZER. |
DE19721791A1 (en) * | 1997-05-24 | 1998-11-26 | Lipp Mischtechnik Gmbh | Method and device for making chocolate |
EP0896833B1 (en) * | 1997-08-11 | 2003-03-26 | A. BERENTS GMBH & CO. KG | Device for homogenizing flowable materials |
US7066640B2 (en) * | 2003-08-26 | 2006-06-27 | Homeland Housewares, Llc | Blender and mugs |
US8834015B2 (en) * | 2005-09-05 | 2014-09-16 | Breville Pty Limited | Blender with co-operating jug and blades |
-
2008
- 2008-02-25 DE DE102008010841A patent/DE102008010841A1/en not_active Withdrawn
-
2009
- 2009-02-14 DK DK09002091.8T patent/DK2092975T3/en active
- 2009-02-14 AT AT09002091T patent/ATE519537T1/en active
- 2009-02-14 EP EP09002091A patent/EP2092975B1/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109365066A (en) * | 2017-11-18 | 2019-02-22 | 深圳市叁星飞荣机械有限公司 | A kind of vertical media Ball-stirring mill with multi-stage separation and grading function |
CN109365066B (en) * | 2017-11-18 | 2020-10-09 | 深圳市叁星飞荣机械有限公司 | Vertical medium stirring mill with multi-stage separation and classification functions |
Also Published As
Publication number | Publication date |
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EP2092975A3 (en) | 2009-09-02 |
ATE519537T1 (en) | 2011-08-15 |
EP2092975A2 (en) | 2009-08-26 |
DK2092975T3 (en) | 2011-11-21 |
DE102008010841A1 (en) | 2009-08-27 |
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