EP1287880A2 - Mixing apparatus - Google Patents

Mixing apparatus Download PDF

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Publication number
EP1287880A2
EP1287880A2 EP02018754A EP02018754A EP1287880A2 EP 1287880 A2 EP1287880 A2 EP 1287880A2 EP 02018754 A EP02018754 A EP 02018754A EP 02018754 A EP02018754 A EP 02018754A EP 1287880 A2 EP1287880 A2 EP 1287880A2
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EP
European Patent Office
Prior art keywords
propeller
mixing
mixing device
feed shaft
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02018754A
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German (de)
French (fr)
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EP1287880B1 (en
EP1287880A3 (en
Inventor
Eberhard Dipl.-Ing. Lipp
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Lipp Mischtechnik GmbH
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Lipp Mischtechnik GmbH
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Publication date
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Publication of EP1287880A2 publication Critical patent/EP1287880A2/en
Publication of EP1287880A3 publication Critical patent/EP1287880A3/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50Mixing liquids with solids
    • B01F23/53Mixing liquids with solids using driven stirrers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/83Mixing plants specially adapted for mixing in combination with disintegrating operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/40Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
    • B01F35/41Mounting or supporting stirrer shafts or stirrer units on receptacles
    • B01F35/411Mounting or supporting stirrer shafts or stirrer units on receptacles by supporting only one extremity of the shaft
    • B01F35/4112Mounting or supporting stirrer shafts or stirrer units on receptacles by supporting only one extremity of the shaft at the bottom of the receptacle, e.g. by studs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05Stirrers
    • B01F27/11Stirrers characterised by the configuration of the stirrers
    • B01F27/114Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1144Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections with a plurality of blades following a helical path on a shaft or a blade support
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/836Mixing plants; Combinations of mixers combining mixing with other treatments
    • B01F33/8361Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
    • B01F33/83612Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by crushing or breaking

Definitions

  • the invention relates to a mixing device for mixing a base material with a liquid, with a vertical feed shaft for the base material and a mixing chamber located below the feed shaft, in which the liquid is supplied and a mixing tool can be driven in rotation, wherein in the feed shaft is provided with a propeller rotating about a vertical axis is provided in which wing elements extending in the radial direction are provided.
  • basic materials which are particularly can be powdery or granular solids, also called chunks or appear as clods, or which are also a paste can be mixed with liquids.
  • a vertical axis rotating propeller is designed so that it either forms a continuous screw conveyor or from individual screw conveyor pieces is composed, which sit one above the other in the axial direction and are circumferentially offset from each other so that between them only axial spaces are free. But this is also in the axial direction propellers composed of individual worm gear pieces are closed, because the individual worm gear pieces overlap and overlap.
  • the object of the present invention is therefore a mixing device as above specified to develop such that such clogging no longer occurs.
  • This object is achieved in that in the in the feed shaft rotating propeller circumferentially over the segments entire height of the propeller are axially parallel, wing-free.
  • the propeller at speeds of over 200 revolutions per minute, preferably even at speeds of 300 to 3000 Revolutions per minute, it also ensures that liquid spraying up the mixing chamber does not enter the feed shaft can and there leads to a sticking and clumping of the base material.
  • Such a closing of the feed shaft against highly splashing liquid can be reached from the mixing room, in particular, when the propeller each several (in particular four) wings in a normal to the central axis of the propeller arranged level are provided. If necessary, the propeller also interconnected several corresponding levels with wings exhibit. This not only increases the “tightness” downwards but improves also a homogenization of the base material when it is fed to the mixing chamber.
  • the feed shaft should preferably closely surround the propeller, for example with a gap width between the rotating wing ends and the Wall of the feed shaft of less than 5 mm, preferably of 0.5 - 3 mm.
  • the mixing tool rotates around a vertical axis. This is preferably below the feed shaft in the mixing room arranged mixing tool but a vertical Rotatable axis. It is then advantageous if the feed shaft is rotationally symmetrical and its central axis with the axis of the mixing tool flees. Then the propeller can in particular directly on the upper end of the Mixing tool must be mounted.
  • the one on the upper end of the mixing tool rotating around a vertical axis assembled propeller has constructive advantages in terms of easier assembly and easier driveability of the propeller.
  • the blades of the propeller are preferably set in the conveying direction in order to Ensure that raw material is fed into the mixing chamber.
  • the feed shaft itself cannot be cylindrical overall.
  • the feed shaft can also be conically narrowing. This will For example, fluidizing powder compresses, making agglomerates better be unlocked.
  • a mixing drum 6 is flanged to a lantern 5, in the inner one Mixing room 7 a mixing tool 8 can be driven in rotation.
  • the central axis 9 of the The mixing tool is aligned in the vertical direction.
  • a vertical feed shaft At the top of the Mixing room 7 is a vertical feed shaft on this via a flange 10 11 screwed on. This feed shaft 11 has a smaller diameter than the mixing space 7 arranged below the feed shaft.
  • Liquid supply connections 12 are provided on the flange 10, through which liquid (Arrows 13) can be fed into the mixing chamber 7 from above. Through a Guide tube, not shown, connected to the upper end of the feed shaft solids (arrow 14) coming from above likewise falls into the Feed shaft 11. This basic material is through a metering device, not shown abandoned in the desired amount.
  • a propeller 15 rotates, in which on a shaft 16 several wings 17 are distributed over the circumference, as shown in FIG supervision can be recognized.
  • the wings 17 project up to close the inner wall of the feed shaft 11, thus forming the propeller of a narrow gap.
  • These wings 17 leave inside the feed shaft 11 several segments 18 free, which are axially parallel. at standing propeller 15 could directly through these segments 18 basic materials fall into the mixing room 7.
  • the propeller 15 rotates at a speed of more than 200 revolutions per minute (see arrow 19). Characterized by the wing 17 in basic material already in the segments 18 within the feed shaft 11 homogenized before the liquid is then added to it in the mixing chamber 7, which is mixed with the base material by the mixing tool 8.
  • the finished mixture is discharged from the mixing device through a discharge pipe 20 dissipated.
  • a discharge pipe 20 dissipated.
  • the mixing room 7 via cooling water connections 21 accordingly Temperature are maintained.
  • the wings 17 are each arranged in one plane. It is also shown here Example to recognize that two levels, each with four wings arranged in it 17 are arranged one above the other, the corresponding wing 17 exactly lie on top of each other and as you can see it is easy to do. Through this Employment will promote the raw material homogenized by the propeller in the direction of the mixing room below the propeller.
  • Feed shaft 22 agglomerates can be better disrupted.
  • the invention thus represents a possibility of a mixing device to build with vertical orientation, where the feed chute is blocked is safely avoided and that due to a pre-homogenized Basic material also delivers very good mixing results.

Abstract

A mixing arrangement comprises a vertical feed shaft (11) for the base material; a mixing chamber (7) arranged below the shaft for collecting the liquid added; and a rotating mixing tool (8). A propeller (15) rotating about a vertical axis is arranged in the feed shaft. Individual segments of the propeller are blade-free in the periphery direction. Preferred Features: The propeller rotates at a speed of at least 200, preferably 300-3000 min<-1>. The shaft surrounds the propeller. The propeller is mounted on the upper end of the mixing tool. The shaft is cylindrical and conically tapers.

Description

Die Erfindung betrifft eine Mischvorrichtung zum Vermischen eines Grundstoffes mit einer Flüssigkeit, mit einem vertikalen Zuführschacht für den Grundstoff und einem unterhalb des Zuführschachtes angeordneten Mischraum, in dem die Flüssigkeit zugeführt wird und ein Mischwerkzeug rotierend antreibbar ist, wobei in dem Zuführschacht ein um eine vertikale Achse rotierender Propeller vorgesehen ist, bei dem sich in Radialrichtung erstreckende Flügelelemente vorgesehen sind.The invention relates to a mixing device for mixing a base material with a liquid, with a vertical feed shaft for the base material and a mixing chamber located below the feed shaft, in which the liquid is supplied and a mixing tool can be driven in rotation, wherein in the feed shaft is provided with a propeller rotating about a vertical axis is provided in which wing elements extending in the radial direction are provided.

Mit einer Vorrichtung dieser Art, wie Sie beispielsweise aus der DE-A-196 29 945 bekannt ist, können Grundstoffe, bei denen es sich insbesondere um pulverförmige oder körnige Feststoffe handeln kann, die auch als Brocken oder als Schollen auftreten, oder bei denen es sich auch um eine Paste handeln kann, mit Flüssigkeiten vermischt werden.With a device of this type, for example from the DE-A-196 29 945 is known, basic materials, which are particularly can be powdery or granular solids, also called chunks or appear as clods, or which are also a paste can be mixed with liquids.

Dabei tritt jetzt das Problem auf, dass Flüssigkeit aus dem Mischraum in den Zuführschacht spritzen kann und dort mit dem Grundstoff zu Verklebungen bzw. Verklumpungen und damit zu einem Zusetzen des Zuführschachtes führen kann. Um dies zu verhindern wird am unteren Ende des Zuführschachtes ein in den Mischraum fördernder Propeller vorgesehen.The problem now arises that liquid from the mixing room into the feed shaft can inject and there with the base material to stick or Lumps and thus lead to clogging of the feed shaft. To prevent this from happening, a plug is placed in the bottom of the feed shaft Propeller intended for mixing room.

In der DE-A-196 29 945 wird jetzt beschrieben, dass der im Zuführschacht um eine vertikale Achse rotierende Propeller derart ausgestaltet ist, dass er entweder eine durchgängige Förderschnecke bildet oder aber aus einzelnen Schneckengangstücken zusammengesetzt ist, die in axialer Richtung übereinander sitzen und in Umfangsrichtung gegeneinander versetzt sind, so dass zwischen ihnen lediglich axiale Zwischenräume frei sind. In axialer Richtung ist aber auch dieser aus einzelnen Schneckengangstücken zusammengesetzte Propeller verschlossen, da sich die einzelnen Schneckengangstücke jeweils überdecken und überlappen. In DE-A-196 29 945 it is now described that the in the feed shaft a vertical axis rotating propeller is designed so that it either forms a continuous screw conveyor or from individual screw conveyor pieces is composed, which sit one above the other in the axial direction and are circumferentially offset from each other so that between them only axial spaces are free. But this is also in the axial direction propellers composed of individual worm gear pieces are closed, because the individual worm gear pieces overlap and overlap.

Es hat sich jetzt herausgestellt, dass diese förderschneckenartigen Propeller in Abhängigkeit von der Konsistenz des Grundstoffes zu Verstopfungen neigen. Es kann passieren, dass sich der brocken- oder schollenförmige Grundstoff in einem Schneckengang verklemmt und festsetzt und somit eine weitere Förderung des Grundstoffes zu der Mischkammer verhindert.It has now been found that these screw-type propellers in Depending on the consistency of the raw material tend to constipation. It it can happen that the lump-like or clod-like raw material is in one Worm gear jammed and stuck and thus further promoting the Prevents base to the mixing chamber.

Aufgabe der vorliegenden Erfindung ist es daher, eine Mischvorrichtung wie oben angegeben derart weiterzubilden, dass ein derartiges Verstopfen nicht mehr auftritt.The object of the present invention is therefore a mixing device as above specified to develop such that such clogging no longer occurs.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass bei dem im Zuführschacht rotierenden Propeller in Umfangsrichtung einzelne Segmente über die gesamte Höhe des Propellers achsparallel durchgehend flügelfrei sind.This object is achieved in that in the in the feed shaft rotating propeller circumferentially over the segments entire height of the propeller are axially parallel, wing-free.

Es hat sich herausgestellt, dass aufgrund derartiger achsparallel durchgängigen Freiräume im Propeller eine Verstopfung vermieden wird. Insbesondere hat eine derartige Ausführungsform auch noch den weiteren Vorteil, dass der Grundstoff durch den Propeller noch homogenisiert wird, was bei der anschließenden Vermischung mit Flüssigkeit zu besseren Mischergebnissen führt.It has been found that due to such axially parallel Free space in the propeller to avoid clogging. In particular has one such embodiment also has the further advantage that the base material is still homogenized by the propeller, what with the subsequent mixing with liquid leads to better mixing results.

Insbesondere, indem der Propeller mit Geschwindigkeiten von über 200 Umdrehungen pro Minute, vorzugsweise sogar mit Geschwindigkeiten von 300 bis 3000 Umdrehungen pro Minute rotiert, wird im übrigen auch gewährleistet, dass aus dem Mischraum hochspritzende Flüssigkeit nicht in den Zuführschacht eintreten kann und dort zu einer Verklebung und Verklumpung des Grundstoffes führt.In particular, by using the propeller at speeds of over 200 revolutions per minute, preferably even at speeds of 300 to 3000 Revolutions per minute, it also ensures that liquid spraying up the mixing chamber does not enter the feed shaft can and there leads to a sticking and clumping of the base material.

Ein derartiges Verschließen des Zuführschachtes gegen hochspritzende Flüssigkeit aus dem Mischraum ist insbesondere dann zu erreichen, wenn an dem Propeller jeweils mehrere (insbesondere vier) Flügel in einer normal zur Mittelachse des Propellers angeordneten Ebene vorgesehen sind. Nötigenfalls kann der Propeller auch mehrere entsprechenden Ebenen mit Flügeln übereinandergeschaltet aufweisen. Dies erhöht nicht nur die "Dichtigkeit" nach unten sondern verbessert auch eine Homogenisierung des Grundstoffes bei dessen Zuführung zur Mischkammer. Such a closing of the feed shaft against highly splashing liquid can be reached from the mixing room, in particular, when the propeller each several (in particular four) wings in a normal to the central axis of the propeller arranged level are provided. If necessary, the propeller also interconnected several corresponding levels with wings exhibit. This not only increases the "tightness" downwards but improves also a homogenization of the base material when it is fed to the mixing chamber.

Dabei wird bei mehreren Ebenen mit darin liegenden Flügeln aber darauf geachtet, dass die vorhandenen Flügel in Radialrichtung gesehen jeweils parallel zu einem Flügel einer benachbarten Ebene sind. Hierdurch ist auf konstruktiv einfache Weise zu gewährleisten, dass die über die gesamte Höhe es Propellers achsparallel durchgehend flügelfrei gehaltenen Segmente erreicht werden.However, in the case of several levels with wings inside, care is taken that the existing wings are viewed parallel to each other in the radial direction a wing of an adjacent plane. This is structurally simple Way to ensure that the entire height of it propellers axially parallel, continuously wing-free segments can be reached.

Der Zuführschacht soll den Propeller dabei vorzugsweise eng umgeben, beispielsweise mit einer Spaltbreite zwischen den rotierenden Flügelenden und der Wandung des Zufuhrschachtes von weniger als 5 mm, vorzugsweise von 0,5 - 3 mm.The feed shaft should preferably closely surround the propeller, for example with a gap width between the rotating wing ends and the Wall of the feed shaft of less than 5 mm, preferably of 0.5 - 3 mm.

Grundsätzlich ist es zwar im Rahmen dieser Erfindung, wenn das Mischwerkzeug um eine vertikale Achse rotiert. Vorzugsweise ist das unterhalb des Zuführschachtes im Mischraum angeordnete Mischwerkzeug aber um eine vertikale Achse rotierbar. Hierbei ist es dann vorteilhaft, wenn der Zuführschaft rotationssymmetrisch ist und seine Mittelachse mit der Achse des Mischwerkzeuges fluchtet. Dann kann der Propeller insbesondere direkt auf dem oberen Ende des Mischwerkzeuges montiert sein.Basically, it is within the scope of this invention if the mixing tool rotates around a vertical axis. This is preferably below the feed shaft in the mixing room arranged mixing tool but a vertical Rotatable axis. It is then advantageous if the feed shaft is rotationally symmetrical and its central axis with the axis of the mixing tool flees. Then the propeller can in particular directly on the upper end of the Mixing tool must be mounted.

Der auf dem oberen Ende des um eine vertikale Achse rotierenden Mischwerkzeuges montierte Propeller hat dabei konstruktive Vorteile im Hinblick auf eine einfachere Montierbarkeit und eine leichtere Antreibbarkeit des Propellers.The one on the upper end of the mixing tool rotating around a vertical axis assembled propeller has constructive advantages in terms of easier assembly and easier driveability of the propeller.

Vorzugsweise sind die Flügel des Propellers in Förderrichtung angestellt, um die Zuführung von Grundstoff in die Mischkammer sicher zu stellen. Der Zuführschacht selber kann dabei nicht nur insgesamt zylindrisch sein. Der Zuführschacht kann auch sich konisch verengend ausgebildet werden. Hierdurch wird beispielsweise fluidisierendes Pulver verdichtet, wodurch Agglomerate besser aufgeschlossen werden.The blades of the propeller are preferably set in the conveying direction in order to Ensure that raw material is fed into the mixing chamber. The feed shaft itself cannot be cylindrical overall. The feed shaft can also be conically narrowing. This will For example, fluidizing powder compresses, making agglomerates better be unlocked.

Wenn der Grundstoff eher klebrig ist, hat es sich aber auch als vorteilhaft erwiesen, den Zuführschacht konisch erweiternd auszubilden. Hierdurch werden solche klebrigen Grundstoffe aufgelockert. If the base material is rather sticky, it has also proven to be advantageous to design the feed shaft to expand conically. As a result, such loosened sticky raw materials.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen. Dabei zeigt

Figur 1
die Seitenansicht einer Mischvorrichtung teilweise geschnitten;
Figur 2
die Aufsicht auf einen Zuführschacht;
Figur 3
eine alternative Ausführungsform eines Zuführschachtes im Schnitt;
Figur 4
eine weitere Ausführungsform des Zuführschachtes im Schnitt.
Further advantages and features of the invention result from the following description of exemplary embodiments. It shows
Figure 1
the side view of a mixing device partially cut;
Figure 2
supervision of a feed shaft;
Figure 3
an alternative embodiment of a feed shaft in section;
Figure 4
another embodiment of the feed shaft in section.

In Figur 1 erkennt man die Seitenansicht einer Mischvorrichtung. Auf einem Gestell 1 ist eine Wellenlagerung 2a mit Elektromotor 2b montiert, der über einen Riemenantrieb 3 mit der Eingangswelle 4 verbunden ist.In Figure 1 you can see the side view of a mixing device. On a rack 1, a shaft bearing 2a with an electric motor 2b is mounted, which via a Belt drive 3 is connected to the input shaft 4.

An einer Laterne 5 ist eine Mischtrommel 6 angeflanscht, in deren innenliegenden Mischraum 7 ein Mischwerkzeug 8 rotierend antreibbar ist. Die Mittelachse 9 des Mischwerkzeuges ist dabei in Vertikalrichtung ausgerichtet. Am oberen Ende des Mischraumes 7 ist auf diesen über einen Flansch 10 ein vertikaler Zuführschacht 11 aufgeschraubt. Dieser Zuführschacht 11 hat einen geringeren Durchmesser als der unterhalb des Zuführschachtes angeordnete Mischraum 7.A mixing drum 6 is flanged to a lantern 5, in the inner one Mixing room 7 a mixing tool 8 can be driven in rotation. The central axis 9 of the The mixing tool is aligned in the vertical direction. At the top of the Mixing room 7 is a vertical feed shaft on this via a flange 10 11 screwed on. This feed shaft 11 has a smaller diameter than the mixing space 7 arranged below the feed shaft.

Am Flansch 10 sind Flüssigkeitszuführanschlüsse 12 vorgesehen, durch die Flüssigkeit (Pfeile 13) von oben in den Mischraum 7 zugeführt werden kann. Durch ein nicht dargestelltes Führungsrohr, das am oberen Ende des Zuführschachtes angeschlossen ist, fällt gleichermaßen Feststoff (Pfeil 14) von oben kommend in den Zuführschacht 11. Dieser Grundstoff wird durch eine nicht dargestellte Dosiervorrichtung in der gewünschten Menge aufgegeben.Liquid supply connections 12 are provided on the flange 10, through which liquid (Arrows 13) can be fed into the mixing chamber 7 from above. Through a Guide tube, not shown, connected to the upper end of the feed shaft solids (arrow 14) coming from above likewise falls into the Feed shaft 11. This basic material is through a metering device, not shown abandoned in the desired amount.

Innerhalb des Zuführschachtes 11 rotiert ein Propeller 15, bei dem an einer Welle 16 über den Umfang verteilt mehrere Flügel 17 sitzen, wie dies in der Figur 2 in der Aufsicht zu erkennen ist. In Radialrichtung ragen die Flügel 17 bis dicht an die Innenwand des Zuführschachtes 11, der damit den Propeller unter Bildung eines engen Spaltes umgibt. Diese Flügel 17 lassen innerhalb des Zuführschachtes 11 mehrere Segmente 18 frei, die achsparallel durchgängig sind. Bei stehendem Propeller 15 könnten durch diese Segmente 18 Grundstoffe direkt bis in den Mischraum 7 fallen. Within the feed shaft 11, a propeller 15 rotates, in which on a shaft 16 several wings 17 are distributed over the circumference, as shown in FIG supervision can be recognized. In the radial direction, the wings 17 project up to close the inner wall of the feed shaft 11, thus forming the propeller of a narrow gap. These wings 17 leave inside the feed shaft 11 several segments 18 free, which are axially parallel. at standing propeller 15 could directly through these segments 18 basic materials fall into the mixing room 7.

Der Propeller 15 dreht jedoch mit einer Geschwindigkeit von mehr als 200 Umdrehungen pro Minute (vergleiche Pfeil 19). Dadurch wird durch die Flügel 17 in den Segmenten 18 befindlicher Grundstoff bereits innerhalb des Zuführschachtes 11 homogenisiert, bevor ihm im Mischraum 7 dann die Flüssigkeit zugesetzt wird, die durch das Mischwerkzeug 8 mit dem Grundstoff vermischt wird.However, the propeller 15 rotates at a speed of more than 200 revolutions per minute (see arrow 19). Characterized by the wing 17 in basic material already in the segments 18 within the feed shaft 11 homogenized before the liquid is then added to it in the mixing chamber 7, which is mixed with the base material by the mixing tool 8.

Das fertige Gemisch wird durch einen Ableitungsstutzen 20 aus der Mischvorrichtung abgeführt. Um bei dem Mischvorgang entstehende Wärme abführen zu können, kann der Mischraum 7 über Kühlwasseranschlüsse 21 entsprechend auf Temperatur gehalten werden.The finished mixture is discharged from the mixing device through a discharge pipe 20 dissipated. To dissipate heat generated during the mixing process can, the mixing room 7 via cooling water connections 21 accordingly Temperature are maintained.

Bezüglich des Propellers 15 im Zuführschacht sei noch erwähnt, dass die Flügel 17 jeweils in einer Ebene angeordnet sind. Außerdem ist im hier dargestellten Beispiel zu erkennen, dass zwei Ebenen mit jeweils vier darin angeordneten Flügeln 17 übereinander angeordnet sind, wobei die entsprechenden Flügel 17 exakt übereinanderliegen und wie zu erkennen ist leicht angestellt sind. Durch diese Anstellung wird eine Förderung des durch den Propeller homogenisierten Grundstoffes in Richtung auf den unterhalb des Propellers liegenden Mischraum bewirkt.Regarding the propeller 15 in the feed shaft, it should also be mentioned that the wings 17 are each arranged in one plane. It is also shown here Example to recognize that two levels, each with four wings arranged in it 17 are arranged one above the other, the corresponding wing 17 exactly lie on top of each other and as you can see it is easy to do. Through this Employment will promote the raw material homogenized by the propeller in the direction of the mixing room below the propeller.

Außerdem ist bei dem hier dargestellten Ausführungsbeispiel gut zu erkennen, dass der Propeller direkt auf dem Mischwerkzeug 8 montiert ist und somit für Mischwerkzeug 8 und Propeller 15 nur ein gemeinsamer Antrieb vorgesehen sein muss.In addition, in the embodiment shown here, it can be clearly seen that that the propeller is mounted directly on the mixing tool 8 and thus for Mixing tool 8 and propeller 15 only a common drive can be provided got to.

Außer einer Ausführungsform mit zylindrischem Zuführschacht 11 wie in Figur 1 dargestellt kann der Zuführschacht auch eine sich konisch verengende Form haben, wie in Figur 3 mit Bezugsziffer 22 dargestellt. Hierdurch wird bei einem Grundstoff wie fluidisierendem Pulver dieses verdichtet, was dazu führt, dass im Zuführschacht 22 Agglomerate besser aufgeschlossen werden.Except for an embodiment with a cylindrical feed shaft 11 as in FIG. 1 the feed shaft can also have a conically narrowing shape, as shown in Figure 3 with reference numeral 22. This will at a Base material such as fluidizing powder compresses this, which leads to the fact that Feed shaft 22 agglomerates can be better disrupted.

Es ist aber wie in der Figur 4 zu erkennen auch möglich, den (mit Bezugsziffer 23 bezeichneten) Zuführschacht sich konisch erweiternd auszubilden. Hierdurch können klebrige Grundstoffe gut aufgelockert werden. However, as can be seen in FIG. 4, it is also possible to use the (with reference number 23 designated) feed chute to expand conically. hereby sticky raw materials can be loosened up well.

Zusammenfassend stellt die Erfindung somit eine Möglichkeit dar, eine Mischvorrichtung mit vertikaler Ausrichtung zu bauen, bei der eine Verstopfung des Zuführschachtes sicher vermieden wird und die aufgrund eines vorhomogenisierten Grundstoffes auch sehr gute Mischergebnisse liefert.In summary, the invention thus represents a possibility of a mixing device to build with vertical orientation, where the feed chute is blocked is safely avoided and that due to a pre-homogenized Basic material also delivers very good mixing results.

Claims (13)

Mischvorrichtung zum Vermischen eines Grundstoffes (14) mit einer Flüssigkeit (13),
mit einem vertikalen Zuführschacht (11, 22, 23) für den Grundstoff (14) und einem unterhalb des Zuführschachtes (11, 22, 23) angeordneten Mischraum (7) in dem die Flüssigkeit (13) zugeführt wird und ein Mischwerkzeug (8) rotierend antreibbar ist,
wobei in dem Zuführschacht (11, 22, 23) ein um eine vertikale Achse rotierender Propeller (15) vorgesehen ist, bei dem sich in Radialrichtung erstreckende Flügelelemente (17) vorgesehen sind,
dadurch gekennzeichnet, dass bei dem rotierenden Propeller (15) im Zuführschacht (11, 22, 23) in Umfangsrichtung einzelne Segmente (18) über die gesamte Höhe des Propellers (15) achsparallel flügelfrei sind.
Mixing device for mixing a base material (14) with a liquid (13),
with a vertical feed shaft (11, 22, 23) for the base material (14) and a mixing chamber (7) arranged below the feed shaft (11, 22, 23) in which the liquid (13) is fed and a mixing tool (8) rotating is drivable,
a propeller (15) rotating about a vertical axis is provided in the feed shaft (11, 22, 23), in which blade elements (17) extending in the radial direction are provided,
characterized in that in the rotating propeller (15) in the feed shaft (11, 22, 23) individual segments (18) in the circumferential direction are wing-free over the entire height of the propeller (15).
Mischvorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet, dass der Propeller (15) mit mindestens 200 min-1 rotiert, vorzugsweise mit mindestens 300 bis über 3000 min-1.
Mixing device according to claim 1,
characterized in that the propeller (15) rotates at least 200 min -1 , preferably at least 300 to over 3000 min -1 .
Mischvorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet, dass jeweils mehrere, insbesondere vier Flügel (17) in einer normal zur Mittelachse des Propellers (15) angeordneten Ebene vorgesehen sind.
Mixing device according to claim 1,
characterized in that several, in particular four blades (17) are provided in a plane arranged normal to the central axis of the propeller (15).
Mischvorrichtung gemäß Anspruch 3,
dadurch gekennzeichnet, dass der Propeller (15) mehrere Ebenen mit Flügeln (17) übereinander geschaltet aufweist.
Mixing device according to claim 3,
characterized in that the propeller (15) has several planes with blades (17) connected one above the other.
Mischvorrichtung gemäß Anspruch 4,
dadurch gekennzeichnet, dass in jeder Ebene alle Flügel (17) in Radialrichtung parallel zu einem Flügel (17) einer benachbarten Ebene sind.
Mixing device according to claim 4,
characterized in that in each plane all wings (17) are parallel to a wing (17) of an adjacent plane in the radial direction.
Mischvorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet, dass der Zuführschacht (11, 22, 23) den Propeller (15) eng umgibt.
Mixing device according to claim 1,
characterized in that the feed shaft (11, 22, 23) closely surrounds the propeller (15).
Mischvorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet, dass das Mischwerkzeug (8) um eine vertikale Achse (9) rotiert.
Mixing device according to claim 1,
characterized in that the mixing tool (8) rotates about a vertical axis (9).
Mischvorrichtung gemäß Anspruch 7,
dadurch gekennzeichnet, dass der Zuführschacht (11, 22, 23) rotationssymmetrisch ist und seine Mittelachse mit der Achse (9) des Mischwerkzeuges (8) fluchtet.
Mixing device according to claim 7,
characterized in that the feed shaft (11, 22, 23) is rotationally symmetrical and its central axis is aligned with the axis (9) of the mixing tool (8).
Mischvorrichtung gemäß Anspruch 7,
dadurch gekennzeichnet, dass der Propeller (15) auf dem oberen Ende des Mischwerkzeuges (8) montiert ist.
Mixing device according to claim 7,
characterized in that the propeller (15) is mounted on the upper end of the mixing tool (8).
Mischvorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet, dass die Flügel (17) des Propellers (15) in Förderrichtung angestellt sind.
Mixing device according to claim 1,
characterized in that the blades (17) of the propeller (15) are set in the conveying direction.
Mischvorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet, dass der Zuführschacht (11) zylindrisch ist.
Mixing device according to claim 1,
characterized in that the feed chute (11) is cylindrical.
Mischvorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet, dass der Zuführschacht (22) sich konisch verengend ist.
Mixing device according to claim 1,
characterized in that the feed chute (22) is conically narrowing.
Mischvorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet, dass der Zuführschacht (23) sich konisch erweiternd ist.
Mixing device according to claim 1,
characterized in that the feed chute (23) is flared.
EP02018754A 2001-08-28 2002-08-22 Mixing apparatus Expired - Lifetime EP1287880B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10141302A DE10141302B4 (en) 2001-08-28 2001-08-28 Mixing device with propeller in the feed shaft
DE10141302 2001-08-28

Publications (3)

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EP1287880A2 true EP1287880A2 (en) 2003-03-05
EP1287880A3 EP1287880A3 (en) 2003-09-03
EP1287880B1 EP1287880B1 (en) 2006-09-20

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EP02018754A Expired - Lifetime EP1287880B1 (en) 2001-08-28 2002-08-22 Mixing apparatus

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EP (1) EP1287880B1 (en)
DE (2) DE10141302B4 (en)

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Publication number Priority date Publication date Assignee Title
CN116651296B (en) * 2023-04-23 2023-12-15 江西大台农饲料有限公司 Reaction kettle for feed production and production method

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DE7914349U1 (en) * 1979-05-17 1980-10-23 Wachter Kg Hindelang Baustoffwerk Bautechnik, 8973 Hindelang DEVICE FOR CONTINUOUSLY MIXING A DRIED MATERIAL WITH A LIQUID AND / OR A FOAM MATERIAL
US6024481A (en) * 1994-10-25 2000-02-15 Alfa Laval Ab Mixer for mixing of liquids or suspensions and method for mixing
DE19629945A1 (en) * 1996-07-25 1998-01-29 Janke & Kunkel Kg Mixing of solid particles with liquids

Also Published As

Publication number Publication date
EP1287880B1 (en) 2006-09-20
DE10141302B4 (en) 2004-03-25
EP1287880A3 (en) 2003-09-03
DE50208187D1 (en) 2006-11-02
US20030043691A1 (en) 2003-03-06
DE10141302A1 (en) 2003-03-27

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