EP0448766A2 - Mixer-dryer, or apparatus for working or processing liquid, pasty, moist and dry products - Google Patents

Mixer-dryer, or apparatus for working or processing liquid, pasty, moist and dry products Download PDF

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Publication number
EP0448766A2
EP0448766A2 EP90107482A EP90107482A EP0448766A2 EP 0448766 A2 EP0448766 A2 EP 0448766A2 EP 90107482 A EP90107482 A EP 90107482A EP 90107482 A EP90107482 A EP 90107482A EP 0448766 A2 EP0448766 A2 EP 0448766A2
Authority
EP
European Patent Office
Prior art keywords
mixing
heating jacket
container
dryer according
screw
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.)
Withdrawn
Application number
EP90107482A
Other languages
German (de)
French (fr)
Other versions
EP0448766A3 (en
Inventor
Johann Dipl. Ing. Kugler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alfred Bolz GmbH and Co KG
Original Assignee
Alfred Bolz GmbH and Co KG
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Filing date
Publication date
Application filed by Alfred Bolz GmbH and Co KG filed Critical Alfred Bolz GmbH and Co KG
Publication of EP0448766A2 publication Critical patent/EP0448766A2/en
Publication of EP0448766A3 publication Critical patent/EP0448766A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00
    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/84—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with two or more stirrers rotating at different speeds or in opposite directions about the same axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
    • F26B11/14—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a horizontal or slightly-inclined plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
    • 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
    • B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
    • B01F27/091—Stirrers characterised by the mounting of the stirrers with respect to the receptacle with elements co-operating with receptacle wall or bottom, e.g. for scraping the receptacle wall
    • 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
    • B01F27/15—Stirrers with tubes for guiding the material

Definitions

  • the present invention relates to a mixer dryer or device for processing and processing liquid, pasty, moist and dry products under atmospheric, vacuum or pressure conditions, a mixing container consisting of a lid, middle and bottom part, which can be optionally heated is provided and a mixing screw is arranged in the interior of the mixing container rotating about the vertical container axis.
  • Mixing dryers of this type are known in order to dry liquid, pasty or moist and also dry products with high output.
  • drying devices In such mixed dryers, which have a cylindrical or cylindro-conical wall.
  • the previously known drying devices generally consisted of an internally heated mixing screw, which is enclosed by a heating medium in a closed circuit, and of heated container walls of this mixing dryer.
  • a mixing dryer in this regard is based, for example, on the applicant's own patents.
  • the mixer dryer mentioned has an excellent heating performance, but the ratio of Product volume to the heat transfer surface can still be optimized.
  • the known mixing dryers are a heated mixing screw that runs along the inner wall of the mixing container.
  • the object of the present invention is to develop mixer driers of the type mentioned at the outset in such a way that the ratio between product volume and heat transfer surface is still significantly improved.
  • the invention is characterized in that, starting from a mixing container which contains a centrally driven, heated mixing screw, this mixing screw is concentrically surrounded by at least one heatable heating jacket, which heating jacket is essentially cylindrical and is axially parallel to the axis of the mixing screw extends in the mixing container.
  • the main advantage is achieved that a further heating surface is created in the interior of the mixing dryer at a close radial distance from the heated mixing screw, which ensures excellent heat transfer to the product to be dried.
  • the inner wall of the heating jacket runs at a close radial distance from the outer contour of the heated mixing screw. This defines a conveying gap through which the mixing screw either transports the product upwards or in other applications conveys it downwards from the lid area of the container.
  • the heating jacket leaves an axial distance to the inside of the lid so that the mixing screw redirects the product conveying upwards there on the lid and the product descends radially outward on the container walls in the direction of the bottom area of the mixing dryer.
  • the product to be dried again comes into thermal contact with the heated outer wall on the one hand and with the possibly heated inner wall of the mixing container on the other hand.
  • the heating jacket preferably extends axially parallel to the longitudinal axis of the mixing screw.
  • the mixing screw itself is conical in shape and accordingly the heating jacket does not run axially parallel to the longitudinal axis of the mixing screw, but also has a conical contour.
  • a first embodiment provides that the conical contour opens upwards and the heating jacket is adapted to this contour accordingly.
  • the contour of the heating screw is wider in the bottom area than in the lid area and accordingly the heating jacket is also adapted to this contour.
  • the heating jacket is double-walled.
  • This double-walled heating jacket Forced operation of the heating medium instead of such that the heating medium enters the circulating boiler room below and is guided there along channels or guide tubes along the walls so that a constant flow of the heating medium takes place, for. B. upwards from the outer wall of the container; the heating medium is deflected at the top and is led down again on the inner wall of the container and drained to an outlet.
  • the heating medium is introduced in the upper region of this double-walled heating jacket and z. B. spirally down in the double wall of the heating jacket and is fed to an outlet there.
  • a heating medium such as water or steam or a thermal oil
  • an electric heating is provided in addition or alone.
  • Another essential feature of the present invention is that in the annular gap between the outer wall of this concentric heating jacket and the inner wall of the mixer dryer, another mixer with one or more arms is arranged, which mixer is driven in rotation and the one or more arms in the annular gap between the outer wall of the heating jacket and the inner wall of the optionally heated container wall are rotatably driven.
  • the delivery arms have a scraping or circulation effect on the product in the mixer dryer.
  • the radial inside of the cantilevers which are arranged closest to the radially outer side to the heatable heating jacket, strips off the product which settles on the outside of the concentric heating jacket and leads it away. This will Avoid caking, sticking or inadmissible adhesion of the product in this area.
  • the booms also have an additional conveying effect for medium in the axial direction of the mixing screw. It remains open whether the conveying direction is opposite to the conveying direction of the mixing screw or in the same direction as the conveying direction of the mixing screw.
  • the mixing screw is driven from below (from the bottom of the container), while the stripper arrangement is driven from the lid side of the container.
  • both arrangements are driven together concentrically to one another either on the lid side or on the bottom side of the container.
  • the boom itself still perform rotating movements and driven in rotation on the Run along the inside of the mixer dryer.
  • the mixing container consists of a lid part 1, a middle part 2 and a bottom part 3.
  • the lid part 1 can be curved, conical or flat.
  • the middle part 2 is designed as a cylinder, conically or conically.
  • Flat, conical or curved designs are selected for the base part 3.
  • Cover part 1, middle part 2 and bottom part 3 can optionally be provided with heating jackets 4.
  • a double-walled, heated conveyor drying tube 6 or heating jacket is mounted concentrically around a screw conveyor, which can also be double-walled and the product downwards or upwards promotes.
  • Another mixer 8 with one or more arms 9, 9a is installed in the mixing tank in order to achieve scraping or circulation effects on the tank walls and on the heating jacket 6.
  • This mixer can be guided with a guide bearing 10 in the container.
  • this mixer 8 can be designed as a heatable hollow body, as a result of which increased heat transfer to the product is achieved.
  • the vertical axis is either driven in the direction of arrow 11 or 12, while the agitator 8 is also driven in the direction of arrow 11 or 12. It is also provided that the upper end 13 of the mixing screw 7 is additionally mounted concentrically in the vertical axis of the agitator 8.
  • the heating jacket 6 is designed as a delivery pipe.
  • delivery pipe means that the product is conveyed upwards from the mixing screw 7 in the direction of arrow 14 from the bottom 3, the product being carried upwards in the annular gap 15 between the outer edge of the mixing screw and the delivery pipe 6. This results in excellent heat transfer between the heated mixing screw and the inner jacket of the delivery pipe 6.
  • the product is then deflected in the region 16 of the lid on the lid and sinks again in the direction of arrow 17, where it in turn comes into contact with the outer wall 18 of the heatable delivery pipe 6 and the inner wall 19 of the heated container wall of the container of the middle part 2.
  • the wipers 9, which can consist of one or more wipers 9 arranged evenly distributed around the circumference, all of which are non-rotatably connected to the vertical axis of the agitator 8.
  • the wipers 9 are preferably hollow, so that the product can pass through the hollow cross section 21, it being preferably provided in a further embodiment that the wipers 9 are also additionally heated.
  • the product By forming a free cross section 21 or a recess in the area of the wipers 9, the product can pass through there and thereby reduce the stirring resistance for the circulating agitator 8.
  • the wipers 9 still have a conveying effect in the vertical direction 17 or convey in the opposite direction.
  • the product thus also comes into excellent thermal contact with the heating medium in the outer annular gap 22 between the radial outside of the wipers 9 and the inside of the heated container wall 19.
  • a circumferential guide bearing 10 is arranged on the outside of the concentric conveyor drying tube 6, which supports the wipers 9 in their lower region.
  • FIG 2 shows schematically a cross section through the mixing screw 7 where it can be seen that the mixing screw blades 23 have a cavity 24 which is continuously flowed through by a heating medium.
  • the cavities are not shown in detail 24 of all mixing screw blades 23 connected to each other so that all of the heating medium flows through them. Likewise, the heating screw flows through the mixing screw shaft itself.
  • FIG. 3 shows a modified exemplary embodiment in comparison to FIG. 1.
  • the same parts are provided with the same reference symbols.
  • the mixing screw 7 is rotatably mounted with an upper bearing 13 centrally in the vertical shaft of the agitator 8.
  • the boom is double and consists of the boom arms 9 and 9a.
  • the heating of the arms 9, 9a is shown schematically here, the heating medium entering from the lid area via a rotation distributor 27 in the direction of the arrow 26 and flowing back into the rotation distributor 27 from the arm 9, 9a in the direction of the arrow 28.
  • the redirection takes place in the direction of arrow 29 at the lower region of this boom.
  • the mixing screw 7 consists of a concentric, rotating driven pipe 30, in the interior of which the fixed supply pipe 31 for supplying the heating medium is arranged in the interior of the mixing screw 7.
  • the inner tube 31 is not stationary, but is driven to rotate together with the mixing screw 7.
  • the mixing screw is driven by the rotary drive 32 according to FIG. 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Accessories For Mixers (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

A mixer-dryer, or apparatus for working and processing liquid, pasty, moist and dry products under atmospheric, vacuum or pressure conditions is described, a mixing container, consisting of cover part, central part and bottom part, which can be heated alternatively, being provided and a mixing screw, which rotates about the vertical container axis, being arranged inside the mixing container. In order further to improve considerably the ratio between product volume and heat transmission surface, it is envisaged that the mixing screw is surrounded concentrically by at least one heated heating jacket or conveying drying pipe, the heating jacket being of essentially cylindrical design and extending axially parallel to the axis of the mixing screw in the mixing container. To increase further the heat transmission surface, it is envisaged that there is arranged in the outer annular gap between the outer wall of the concentric heating jacket and the inner wall of the mixer-dryer a further mixing apparatus with one or more rotary-driven arms.

Description

Gegenstand der vorliegenden Erfindung ist ein Mischtrockner bzw. Vorrichtung zum Be- und Verarbeiten von flüssigen, pastösen, feuchten und trockenen Produkten unter atmosphärischen, Vakuum- oder Druckbedingungen, wobei ein Mischbehälter, bestehend aus Deckel- Mittel- und Bodenteil, die wahlweise beheizt werden können, vorgesehen ist und im Inneren des Mischbehälters um die vertikale Behälterachse drehend eine Mischschnecke angeordnet ist.The present invention relates to a mixer dryer or device for processing and processing liquid, pasty, moist and dry products under atmospheric, vacuum or pressure conditions, a mixing container consisting of a lid, middle and bottom part, which can be optionally heated is provided and a mixing screw is arranged in the interior of the mixing container rotating about the vertical container axis.

Derartige Mischtrockner sind bekannt, um mit hoher Leistung flüssige, pastöse oder feuchte sowie auch trockene Produkte zu trocknen.Mixing dryers of this type are known in order to dry liquid, pasty or moist and also dry products with high output.

Bei der Trocknung von trockenen Produkten, gibt es z. B. einen Anwendungsfall, wo aus kristallisierten Stoffen Kristallwasser entfernt werden soll.When drying dry products, there are e.g. B. an application where water of crystallization is to be removed from crystallized substances.

Es ist bekannt, in derartigen Mischtrocknern, die eine zylindrische oder zylindro-konische Wand aufweisen, eine entsprechende Trockungseinrichtung einzubauen. Die bisher bekannten Trocknungseinrichtungen bestanden in der Regel aus einer innenwandig beheizten Mischschnecke, die von einem Heizmedium in einem geschlossenen Kreislauf umschlossen wird sowie von beheizten Behälterwandungen dieses Mischtrockners.It is known to install a corresponding drying device in such mixed dryers, which have a cylindrical or cylindro-conical wall. The previously known drying devices generally consisted of an internally heated mixing screw, which is enclosed by a heating medium in a closed circuit, and of heated container walls of this mixing dryer.

Ein diesbezüglicher Mischtrockner geht beispielsweise auf eigene Patente des Anmelders zurück. Der erwähnte Mischtrockner hat zwar eine ausgezeichnete Heizleistung, jedoch ist das Verhältnis von Produktvolumen zur Wärmeübertragungsfläche noch optimierbar. Bei den bekannten Mischtrocknern handelt es sich um eine beheizte Mischschnecke, die an der Innenwandung des Mischbehälters entlangläuft.A mixing dryer in this regard is based, for example, on the applicant's own patents. The mixer dryer mentioned has an excellent heating performance, but the ratio of Product volume to the heat transfer surface can still be optimized. The known mixing dryers are a heated mixing screw that runs along the inner wall of the mixing container.

Die Aufgabe der vorliegenden Erfindung liegt darin, Mischtrockner der eingangs genannten Art so weiterzubilden, daß das Verhältnis zwischen Produktvolumen und Wärmeübertragungsfläche noch wesentlich verbessert wird.The object of the present invention is to develop mixer driers of the type mentioned at the outset in such a way that the ratio between product volume and heat transfer surface is still significantly improved.

Zur Lösung der gestellten Aufgabe ist die Erfindung dadurch gekennzeichnet, daß ausgehend von einem Mischbehälter, der eine zentrisch angetriebene beheizbare Mischschnecke enthält, diese Mischschnecke von mindestens einem beheizbaren Heizmantel konzentrisch umgeben ist, welcher Heizmantel im wesentlichen zylinderförmig ausgebildet ist und sich achsparallel zur Achse der Mischschnecke im Mischbehälter erstreckt.To achieve the object, the invention is characterized in that, starting from a mixing container which contains a centrally driven, heated mixing screw, this mixing screw is concentrically surrounded by at least one heatable heating jacket, which heating jacket is essentially cylindrical and is axially parallel to the axis of the mixing screw extends in the mixing container.

Bei der gegebenen technischen Lehre wird der wesentliche Vorteil erreicht, daß in dichtem radialen Abstand zur beheizten Mischschnecke eine weitere Heizfläche im Innenraum des Mischtrockners geschaffen wird, welche eine ausgezeichnete Wärmeübertragung auf das zu trocknende Produkt gewährleistet.Given the technical teaching, the main advantage is achieved that a further heating surface is created in the interior of the mixing dryer at a close radial distance from the heated mixing screw, which ensures excellent heat transfer to the product to be dried.

Wesentlich hierbei ist, daß die Innenwandung des Heizmantels in dichtem radialen Abstand zur Außenkontur der beheizten Mischschnecke verläuft. Hierdurch wird ein Förderspalt definiert, durch welchen die Mischschnecke das Produkt entweder nach oben transportiert oder in anderen Anwendungsfällen vom Deckelbereich des Behälters aus nach unten fördert.It is essential here that the inner wall of the heating jacket runs at a close radial distance from the outer contour of the heated mixing screw. This defines a conveying gap through which the mixing screw either transports the product upwards or in other applications conveys it downwards from the lid area of the container.

Bedingt durch diesen engen Förderspalt kommt es also zu einem ausgezeichneten Wärmekontakt und damit zu einer Wärmeübertragung einerseits an der Mischschnecke und andererseits an dem Heizmantel.Due to this narrow conveyor gap, there is one excellent thermal contact and thus heat transfer on the one hand to the mixing screw and on the other hand to the heating jacket.

Wesentlich ist, daß der Heizmantel einen axialen Abstand zur Innenseite des Deckels frei läßt, damit die Mischschnecke das nach oben befördernde Produkt dort am Deckel umlenkt und das Produkt in Richtung radial auswärts an den Behälterwandungen herabsinkt in Richtung zum Bodenbereich des Mischtrockners. Hierbei kommt das zu trocknende Produkt wiederum in Wärmekontakt einerseits mit der beheizten Außenwandung und andererseits mit der gegebenenfalls beheizten Innenwandung des Mischbehälters.It is essential that the heating jacket leaves an axial distance to the inside of the lid so that the mixing screw redirects the product conveying upwards there on the lid and the product descends radially outward on the container walls in the direction of the bottom area of the mixing dryer. Here, the product to be dried again comes into thermal contact with the heated outer wall on the one hand and with the possibly heated inner wall of the mixing container on the other hand.

In der einleitenden Beschreibung wurde erwähnt, daß der Heizmantel bevorzugt sich achsparallel zur Längsachse der Mischschnecke erstreckt.In the introductory description it was mentioned that the heating jacket preferably extends axially parallel to the longitudinal axis of the mixing screw.

In einer anderen Ausführungsform ist es jedoch vorgesehen, daß die Mischschnecke selbst in der Kontur konisch ausgebildet ist und dementsprechend der Heizmantel nicht achsparallel zur Mischschneckenlängsachse verläuft, sondern ebenfalls eine konische Kontur aufweist.In another embodiment, however, it is provided that the mixing screw itself is conical in shape and accordingly the heating jacket does not run axially parallel to the longitudinal axis of the mixing screw, but also has a conical contour.

Eine erste Ausführungsform sieht vor, daß die konische Kontur sich nach oben öffnet und dementsprechend der Heizmantel dieser Kontur angepaßt ist. In einer anderen Ausführungsform ist es vorgesehen, daß die Kontur der Heizschnecke im Bodenbereich breiter ist als im Deckelbereich und dementsprechend ist auch der Heizmantel an diese Kontur angepaßt.A first embodiment provides that the conical contour opens upwards and the heating jacket is adapted to this contour accordingly. In another embodiment it is provided that the contour of the heating screw is wider in the bottom area than in the lid area and accordingly the heating jacket is also adapted to this contour.

Für die Ausführung des Heizmantels gibt es mehrere bevorzugte Ausführungsformen nach der vorliegenden Erfindung.There are several preferred embodiments of the present invention for designing the heating mantle.

In einer ersten bevorzugten Ausführungsform ist der Heizmantel doppelwandig ausgeführt. In diesem doppelwandigen Heizmantel findet eine Zwangsführung des Heizmediums etwa derart statt, daß das Heizmedium unten in den umlaufenden Heizraum eintritt und dort über Kanäle oder Führungsrohre entlang den Wandungen so geführt wird, daß ein ständiger Umfluß des Heizmediums stattfindet, z. B. von der Außenwandung des Behälters nach oben; oben wird das Heizmittel umgelenkt und wird an der Innenwandung des Behälters wieder heruntergeführt und zu einem Auslaß abgelassen.In a first preferred embodiment, the heating jacket is double-walled. One finds in this double-walled heating jacket Forced operation of the heating medium instead of such that the heating medium enters the circulating boiler room below and is guided there along channels or guide tubes along the walls so that a constant flow of the heating medium takes place, for. B. upwards from the outer wall of the container; the heating medium is deflected at the top and is led down again on the inner wall of the container and drained to an outlet.

In einer anderen Ausführungsform ist es vorgesehen, daß das Heizmedium in dem oberen Bereich dieses doppelwandig ausgeführten Heizmantels eingeführt wird und durch Umlenkorgane z. B. spiralig in der Doppelwandung des Heizmantels heruntergeführt wird und dort einem Auslaß zugeführt wird.In another embodiment, it is provided that the heating medium is introduced in the upper region of this double-walled heating jacket and z. B. spirally down in the double wall of the heating jacket and is fed to an outlet there.

Statt der hier beschriebenen Beheizung mit einem Heizmedium wie z. B. Wasser oder Dampf oder einem Thermoöl ist zusätzlich oder allein eine elektrische Beheizung vorgesehen.Instead of the heating described here with a heating medium such. As water or steam or a thermal oil, an electric heating is provided in addition or alone.

Ein weiteres, wesentliches Merkmal der vorliegenden Erfindung besteht darin, daß im Ringspalt zwischen der Außenwandung dieses konzentrischen Heizmantels und der Innenwandung des Mischtrockners ein weiteres Mischwerk mit einem oder mehreren Auslegern angeordnet ist, welches Mischwerk drehangetrieben ist und die ein oder mehreren Ausleger in dem Ringspalt zwischen der Außenwandung des Heizmantels und der Innenwandung der gegebenenfalls beheizten Behälterwandung drehbar angetrieben sind.Another essential feature of the present invention is that in the annular gap between the outer wall of this concentric heating jacket and the inner wall of the mixer dryer, another mixer with one or more arms is arranged, which mixer is driven in rotation and the one or more arms in the annular gap between the outer wall of the heating jacket and the inner wall of the optionally heated container wall are rotatably driven.

Die Ausleger haben einen Abstreif- oder Umwälzeffekt auf das im Mischtrockner befindliche Produkt. Die radiale Innenseite der Ausleger, die nächst der radial äußeren Seite zum beheizbaren Heizmantel angeordnet sind, streift das sich an der Außenseite des konzentrischen Heizmantels absetzende Produkt ab und führt es weg. Dadurch werden Verbackungen, Festsetzugen oder unzulässige Anhaftungen des Produktes in diesem Bereich vermieden.The delivery arms have a scraping or circulation effect on the product in the mixer dryer. The radial inside of the cantilevers, which are arranged closest to the radially outer side to the heatable heating jacket, strips off the product which settles on the outside of the concentric heating jacket and leads it away. This will Avoid caking, sticking or inadmissible adhesion of the product in this area.

Der gleiche Effekt wird im übrigen auch an der radialen Außenseite der Ausleger erreicht, die mit geringem radialen Abstand an der Innenseite der beheizten Behälterwandung laufen. Auch in diesem Bereich wird durch die Drehbewegung der Ausleger eine Anhaftung des Produktes mit Sicherheit vermieden.The same effect is also achieved on the radial outside of the cantilevers, which run with a small radial distance on the inside of the heated container wall. In this area too, the rotation of the cantilevers reliably prevents the product from sticking.

Neben diesem Rühr- und Umwälzeffekt kann es noch zusätzlich vorgesehen sein, daß die Ausleger noch einen zusätzlichen Fördereffekt für Medium in Achsrichtung der Mischschnecke aufweisen. Hierbei bleibt es offen, ob die Förderrichtung entgegen der Förderrichtung der Mischschnecke oder gleichsinnig wie die Förderrichtung der Mischschnecke erfolgt.In addition to this stirring and circulation effect, it can additionally be provided that the booms also have an additional conveying effect for medium in the axial direction of the mixing screw. It remains open whether the conveying direction is opposite to the conveying direction of the mixing screw or in the same direction as the conveying direction of the mixing screw.

Bei der Verwirklichung der vorliegenden Erfindung bleiben dem Fachmann weite Grenzen offen, die von der vorliegenden Erfindung alle umfaßt werden. So ist es in einer ersten bevorzugten Ausführungsform vorgesehen, daß die Mischschnecke von unten (vom Behälterboden aus) angetrieben ist, während die Abstreiferanordnung von der Deckelseite des Behälters aus angetrieben ist.There are broad limits to those skilled in the art in practicing the present invention, all of which are encompassed by the present invention. It is provided in a first preferred embodiment that the mixing screw is driven from below (from the bottom of the container), while the stripper arrangement is driven from the lid side of the container.

Ebenso ist eine umgekehrte Anordnung möglich, bei der die Abstreifer von unten und die Mischschnecke von oben her angetrieben ist.A reverse arrangement is also possible, in which the scraper is driven from below and the mixing screw from above.

In einer weiteren Ausfühhrungsform ist es vorgesehen, daß beide Anordnungen konzentrisch zueinander entweder an der Deckelseite oder an der Bodenseite des Behälters zusammen angetrieben sind.In a further embodiment it is provided that both arrangements are driven together concentrically to one another either on the lid side or on the bottom side of the container.

In einer weiteren Ausführungsform ist es vorgesehen, daß die Ausleger selbst noch drehende Bewegungen ausführen und drehend angetrieben an der Behälterinnenseite des Mischtrockners entlanglaufen.In a further embodiment it is provided that the boom itself still perform rotating movements and driven in rotation on the Run along the inside of the mixer dryer.

Die Erfindung wird nun anhand mehrerer Ausführungsbeispiele näher beschrieben.The invention will now be described in more detail using several exemplary embodiments.

Hierbei ergeben sich aus der Beschreibung und ihrer Darstellung weitere Vorteile und Merkmale der Erfindung.Further advantages and features of the invention result from the description and its representation.

Es zeigen:

Figur 1:
eine erste Ausführungsform eines Mischtrockners schematisiert im Schnitt;
Figur 2:
einen Teilschnitt durch eine beheizte Mischschnecke;
Figur 3:
einen schematisierten Schnitt durch einen Mischtrockner nach der Erfindung.
Show it:
Figure 1:
a first embodiment of a mixer dryer schematically in section;
Figure 2:
a partial section through a heated mixing screw;
Figure 3:
a schematic section through a mixer dryer according to the invention.

Der Mischbehälter besteht aus einem Deckelteil 1, einem Mittelteil 2 sowie einem Bodenteil 3. Das Deckelteil 1 kann gewölbt, konisch oder flach ausgeführt sein. Das Mittelteil 2 wird je nach Anwendungsbereich als Zylinder, zylinder-konisch oder konisch ausgebildet. Für das Bodenteil 3 werden flache, konische oder gewölbte Ausführungen gewählt.The mixing container consists of a lid part 1, a middle part 2 and a bottom part 3. The lid part 1 can be curved, conical or flat. Depending on the area of application, the middle part 2 is designed as a cylinder, conically or conically. Flat, conical or curved designs are selected for the base part 3.

Deckelteil 1, Mittelteil 2 sowie Bodenteil 3 können wahlweise mit Heizmäntel 4 versehen werden.Cover part 1, middle part 2 and bottom part 3 can optionally be provided with heating jackets 4.

In diesem Mischbehälter ist um die vertikale Behälterachse 5 ein doppelwandiges beheizbares Fördertrockenrohr 6 bzw. Heizmantel konzentrisch um eine Förderschnecke angebracht, die ebenfalls doppelwandig beheizt sein kann und das Produkt nach unten oder oben fördert.In this mixing container around the vertical axis 5 of the container, a double-walled, heated conveyor drying tube 6 or heating jacket is mounted concentrically around a screw conveyor, which can also be double-walled and the product downwards or upwards promotes.

Ein weiteres Mischwerk 8 mit einem oder mehreren Auslegern 9,9a ist in den Mischbehälter eingebaut, um Abstreif- bzw. Umwälzeffekte an den Behälterwandungen sowie am Heizmantel 6 zu erreichen. Dieses Mischwerk kann mit einem Führungslager 10 im Behälter geführt werden.Another mixer 8 with one or more arms 9, 9a is installed in the mixing tank in order to achieve scraping or circulation effects on the tank walls and on the heating jacket 6. This mixer can be guided with a guide bearing 10 in the container.

Bei einer Ausführung des Apparates als Mischtrockner kann dieses Mischwerk 8 als beheizbarer Hohlkörper ausgebildet sein, wodurch eine erhöhte Wärmeübertragung an das Produkt erreicht wird.When the apparatus is designed as a mixer dryer, this mixer 8 can be designed as a heatable hollow body, as a result of which increased heat transfer to the product is achieved.

Wie aus der Zeichnung in Figur 1 entnehmbar, ist die vertikale Achse entweder in Pfeilrichtung 11 oder 12 drehangetrieben, während ebenso das Umwälzrührwerk 8 in Pfeilrichtung 11 oder 12 angetrieben ist. Ebenso ist es vorgesehen, daß das obere Ende 13 der Mischschnecke 7 konzentrisch in der vertikalen Achse des Umwälzrührwerkes 8 zusätzlich gelagert ist.As can be seen from the drawing in Figure 1, the vertical axis is either driven in the direction of arrow 11 or 12, while the agitator 8 is also driven in the direction of arrow 11 or 12. It is also provided that the upper end 13 of the mixing screw 7 is additionally mounted concentrically in the vertical axis of the agitator 8.

In der gezeigten Ausführungsform ist der Heizmantel 6 als Förderrohr ausgebildet. Mit dem Begriff Förderrohr ist gemeint, daß das Produkt von der Mischschnecke 7 aus in Pfeilrichtung 14 vom Boden 3 aus, nach oben gerichtet gefördert wird, wobei das Produkt in dem Ringspalt 15 zwischen der Außenkante der Mischschnecke und dem Förderrohr 6 nach oben getragen wird. Hier kommt es zu einer ausgezeichneten Wärmeübertragung zwischen der beheizten Mischschnecke und dem Innenmantel des Förderrohres 6.In the embodiment shown, the heating jacket 6 is designed as a delivery pipe. The term delivery pipe means that the product is conveyed upwards from the mixing screw 7 in the direction of arrow 14 from the bottom 3, the product being carried upwards in the annular gap 15 between the outer edge of the mixing screw and the delivery pipe 6. This results in excellent heat transfer between the heated mixing screw and the inner jacket of the delivery pipe 6.

Das Produkt wird dann im Bereich 16 des Deckels am Deckel umgelenkt und sinkt in Pfeilrichtung 17 wieder nach unten, wo es wiederum in Kontakt mit der Außenwandung 18 des beheizbaren Förderrohres 6 und der Innenwandung 19 der beheizten Behälterwandung des Behälters des Mittelteils 2 gelangt.The product is then deflected in the region 16 of the lid on the lid and sinks again in the direction of arrow 17, where it in turn comes into contact with the outer wall 18 of the heatable delivery pipe 6 and the inner wall 19 of the heated container wall of the container of the middle part 2.

In diesem Zusammenraum 20 laufen die Abstreifer 9, die aus einem oder mehreren gleichmäßig am Umfang verteilt angeordneten Abstreifern 9 bestehen können, die alle drehfest mit der vertikalen Achse des Umwälzrührwerkes 8 verbunden sind.In this space 20 run the wipers 9, which can consist of one or more wipers 9 arranged evenly distributed around the circumference, all of which are non-rotatably connected to the vertical axis of the agitator 8.

Die Abstreifer 9 sind bevorzugt hohl ausgebildet, so daß durch den hohlen Querschnitt 21 das Produkt hindurchgehen kann, wobei bevorzugt in einer weiteren Ausgestaltung vorgesehen ist, daß auch die Abstreifer 9 zusätzlich beheizt sind.The wipers 9 are preferably hollow, so that the product can pass through the hollow cross section 21, it being preferably provided in a further embodiment that the wipers 9 are also additionally heated.

Durch die Ausbildung eines freien Querschnittes 21 oder einer Ausnehmung im Bereich der Abstreifer 9 kann das Produkt dort hundurchtreten und verringert dadurch den Rührwiderstand für das Umwälzrührwerk 8.By forming a free cross section 21 or a recess in the area of the wipers 9, the product can pass through there and thereby reduce the stirring resistance for the circulating agitator 8.

Tatsächlich kann es vorgesehen sein, daß die Abstreifer 9 in vertikaler Richtung 17 noch einen Fördereffekt aufweisen oder in Gegenrichtung hierzu fördern.In fact, it can be provided that the wipers 9 still have a conveying effect in the vertical direction 17 or convey in the opposite direction.

Das Produkt kommt also damit auch im äußeren Ringspalt 22 zwischen der radialen Außenseite der Abstreifer 9 und der Innenseite der beheizten Behälterwandung 19 in ausgezeichneten Wärmekontakt mit dem Heizmedium.The product thus also comes into excellent thermal contact with the heating medium in the outer annular gap 22 between the radial outside of the wipers 9 and the inside of the heated container wall 19.

Zur besseren Führung der Abstreifer ist es vorgesehen, daß an der Außenseite des konzentrischen Fördertrockenrohres 6 ein umlaufendes Führungslager 10 angeordnet ist, welches die Abstreifer 9 in ihrem unteren Bereich abstützt.For better guidance of the wipers, it is provided that a circumferential guide bearing 10 is arranged on the outside of the concentric conveyor drying tube 6, which supports the wipers 9 in their lower region.

Die Figur 2 zeigt schematisiert einen Querschnitt durch die Mischschnecke 7 wo erkennbar ist, daß die Mischschneckenflügel 23 einen Hohlraum 24 aufweisen, der kontinuierlich von einem Heizmedium durchflossen ist. In nicht näher dargestellter Weise sind die Hohlräume 24 aller Mischschneckenflügel 23 miteinander verbunden, so daß alle von dem Heizmedium durchströmt sind. Ebenso ist zusätzlich die Mischschneckenwelle selbst von dem Heizmedium durchströmt.Figure 2 shows schematically a cross section through the mixing screw 7 where it can be seen that the mixing screw blades 23 have a cavity 24 which is continuously flowed through by a heating medium. The cavities are not shown in detail 24 of all mixing screw blades 23 connected to each other so that all of the heating medium flows through them. Likewise, the heating screw flows through the mixing screw shaft itself.

In Figur 1 ist aus zeichnerischen Vereinfachungsgründen nicht dargestellt, daß der konzentrisch angeordnete Heizmantel über Ständer fest mit dem Mischtrocknerboden verbunden ist und ebenso sind die Zuführungen für das Heizmedium nicht dargestellt.In FIG. 1, for reasons of simplification of the drawing, it is not shown that the concentrically arranged heating jacket is firmly connected to the mixing dryer floor by means of stands, and likewise the feeds for the heating medium are not shown.

Die Figur 3 zeigt ein abgewandeltes Ausführungsbeispiel im Vergleich zu Figur 1. Hierbei sind die gleichen Teile mit dem gleichen Bezugszeichen versehen.FIG. 3 shows a modified exemplary embodiment in comparison to FIG. 1. Here, the same parts are provided with the same reference symbols.

In Ergänzung zur Ausführung nach Figur 1 ist zeichnerisch dargestellt, daß die Mischschnecke 7 mit einem oberen Lager 13 zentrisch in der vertikalen Welle des Umwälzrührwerkes 8 drehbar gelagert ist.In addition to the embodiment according to FIG. 1, it is shown in the drawing that the mixing screw 7 is rotatably mounted with an upper bearing 13 centrally in the vertical shaft of the agitator 8.

In Abweichung von dem vorher gezeigten Ausführungsbeispiel nach Figur 1 ist der Ausleger doppelt ausgebildet und besteht aus den Auslegerarmen 9 und 9a. Hier ist die Beheizung der Ausleger 9,9a schematisiert dargestellt, wobei in Pfeilrichtung 26 das Heizmedium vom Deckelbereich her über einen Rotationsverteiler 27 eintritt und in Pfeilrichtung 28 aus dem Ausleger 9,9a wieder in den Rotationsverteiler 27 zurückfließt.In deviation from the previously shown exemplary embodiment according to FIG. 1, the boom is double and consists of the boom arms 9 and 9a. The heating of the arms 9, 9a is shown schematically here, the heating medium entering from the lid area via a rotation distributor 27 in the direction of the arrow 26 and flowing back into the rotation distributor 27 from the arm 9, 9a in the direction of the arrow 28.

Die Umlenkung erfolgt hierbei in Pfeilrichtung 29 am unteren Bereich dieser Ausleger.The redirection takes place in the direction of arrow 29 at the lower region of this boom.

Ebenso sind in Figur 3 noch die Zuführungen für die Beheizung der Mischschnecke 7 schematisiert dargestellt.Likewise, the feeds for heating the mixing screw 7 are shown schematically in FIG.

Die Mischschnecke 7 besteht hierbei aus einem konzentrischen, drehend angetriebenen Rohr 30, in dessen Innenraum das feststehende Zuführungsrohr 31 für die Zuführung des Heizmediums in den Innenraum der Mischschnecke 7 angeordnet ist.The mixing screw 7 consists of a concentric, rotating driven pipe 30, in the interior of which the fixed supply pipe 31 for supplying the heating medium is arranged in the interior of the mixing screw 7.

Es ist ebenso vorgesehen, daß das Innenrohr 31 nicht feststehend ist, sondern mit der Mischschnecke 7 zusammen drehend angetrieben ist.It is also provided that the inner tube 31 is not stationary, but is driven to rotate together with the mixing screw 7.

Der Drehantrieb der Mischschnecke erfolgt hierbei über den Drehantrieb 32 gemäß Figur 3.The mixing screw is driven by the rotary drive 32 according to FIG. 3.

Nicht zeichnerisch dargestellt ist, daß unterhalb des Antriebes 32 ein Rotationsverteiler für die Einführung des Heizmediums in das sich drehende ZUführrohr 31 angeordnet ist. ZEICHNUNGS-LEGENDE

1
Deckelteil
2
Mittelteil
3
Bodenteil
4
Heizmantel
5
Behälterachse
6
Heizmantel
7
Mischschnecke
8
Mischwerk
9,9a
Ausleger
10
Führungslager
11
Pfeilrichtung
12
Pfeilrichtung
13
obere Ende
14
Pfeilrichtung
15
Ringspalt
16
Bereich
17
Pfeilrichtung
18
Außenwandung
19
Innenwandung
20
Zwischenraum
21
Querschnitt
22
äußerer Ringspalt
23
Mischschneckenflügel
24
Hohlraum
26
Pfeilrichtung
27
Rotationsverteiler
28
Pfeilrichtung
29
Pfeilrichtung
30
Rohr
31
Zuführungsrohr
32
Antrieb
It is not shown in the drawing that a rotary distributor for the introduction of the heating medium into the rotating feed pipe 31 is arranged below the drive 32. DRAWING LEGEND
1
Cover part
2nd
Middle section
3rd
Bottom part
4th
Heating jacket
5
Container axis
6
Heating jacket
7
Mixing screw
8th
Mixer
9.9a
boom
10th
Guide bearings
11
Arrow direction
12
Arrow direction
13
upper end
14
Arrow direction
15
Annular gap
16
Area
17th
Arrow direction
18th
Outer wall
19th
Inner wall
20th
Space
21st
cross-section
22
outer annular gap
23
Mixing auger blades
24th
cavity
26
Arrow direction
27th
Rotation distributor
28
Arrow direction
29
Arrow direction
30th
pipe
31
Feed pipe
32
drive

Claims (13)

Mischtrockner bzw. Vorrichtung zum Be- und Verarbeiten von flüssigen, pastösen, feuchten und trockenen Produkten unter atmosphärischen, Vakuum- oder Druckbedingungen, wobei ein Mischbehälter, bestehend aus Deckel-, Mittel- und Bodenteil, die wahlweise beheizt werden können, vorgesehen ist und im Inneren des Mischbehälters um die vertikale Behälterachse drehend eine Mischschnecke angeordnet ist,
dadurch gekennzeichnet, daß die Mischschnecke (7) von mindestens einem beheizbaren Heizmantel (6) bzw. Fördertrockenrohr konzentrisch umgeben ist, wobei der Heizmantel (6) im wesentlichen zylinderförmig ausgebildet ist und sich achsparallel zur Achse (5) der Mischschnecke (7) im Mischbehälter erstreckt.Mixing dryer or device for processing and processing liquid, pasty, moist and dry products under atmospheric, vacuum or pressure conditions, a mixing container consisting of a lid, middle and bottom part, which can be optionally heated, is provided and in A mixing screw is arranged inside the mixing container, rotating about the vertical container axis,
characterized in that the mixing screw (7) is surrounded concentrically by at least one heatable heating jacket (6) or conveyor drying tube, the heating jacket (6) being essentially cylindrical and axially parallel to the axis (5) of the mixing screw (7) in the mixing container extends. Mischtrockner nach Anspruch 1, dadurch gekennzeichnet, daß die Innenwandung des Heizmantels (6) nach Art eines Förderspaltes (15) in dichtem radialen Abstand zur Außenkontur der Mischschnecke (7) verläuft, wobei diese ebenfalls beheizt werden kann.Mixing dryer according to claim 1, characterized in that the inner wall of the heating jacket (6) runs in the manner of a conveyor gap (15) at a close radial distance from the outer contour of the mixing screw (7), which can also be heated. Mischtrockner nach Anspruch 1, dadurch gekennzeichnet, daß der Heizmantel (6) im axialen Abstand zur Innenseite des Deckels (1) und in radialer Richtung mit Abstand zum Mittelteil (2) des Mischbehälters angeordnet ist.Mixing dryer according to claim 1, characterized in that the heating jacket (6) is arranged at an axial distance from the inside of the cover (1) and in a radial direction at a distance from the central part (2) of the mixing container. Mischtrockner nach Anspruch 1, dadurch gekennzeichnet, daß die Mischschnecke (7) in der Kontur konisch oder dergleichen ausgebildet ist und dementsprechend der Heizmantel (6) eine der Mischschnecke (7) angepaßte Kontur aufweist.Mixing dryer according to claim 1, characterized in that the mixing screw (7) in the contour is conical or the like and accordingly the heating jacket (6) has a contour adapted to the mixing screw (7). Mischtrockner nach Anspruch 4, dadurch gekennzeichnet, daß die konische Kontur der Mischschnecke (7) bzw. des Heizmantels (6) nach oben oder nach unten öffnend ausgebildet ist.Mixing dryer according to claim 4, characterized in that the conical contour of the mixing screw (7) or the heating jacket (6) is designed to open upwards or downwards. Mischtrockner nach Anspruch 1, dadurch gekennzeichnet, daß der Heizmantel (6) doppelwandig ausgebildet ist, wobei das Heizmedium einer Zwangsführung unterworfen ist und unten in den Heizraum (6) eintritt und über Kanäle bzw. Führungsrohre entlang den Wandungen des Heizmantels (6) geführt wird.Mixing dryer according to claim 1, characterized in that the heating jacket (6) is double-walled, the heating medium being subjected to a forced guide and entering the heating chamber (6) below and being guided along the walls of the heating jacket (6) via channels or guide tubes . Mischtrockner nach Anspruch 1, dadurch gekennzeichnet, daß das Heizmedium am Heizmantel (6) spiralig geführt wird.Mixing dryer according to claim 1, characterized in that the heating medium is guided spirally on the heating jacket (6). Mischtrockner nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß im äußeren Ringspalt (22) zwischen der Außenwandung des konzentrischen Heizmantels (6) und der Innenwandung des Mischtrockners ein weiteres Mischwerk (8) mit einem oder mehreren drehangetriebenen Auslegern (9, 9a) angeordnet ist.Mixing dryer according to claims 1 to 3, characterized in that in the outer annular gap (22) between the outer wall of the concentric heating jacket (6) and the inner wall of the mixing dryer, a further mixer (8) with one or more rotationally driven arms (9, 9a) is arranged is. Mischtrockner nach Anspruch 8, dadurch gekennzeichnet, daß die Ausleger (9,9a) einen zusätzlichen Fördereffekt für das Medium in Achsrichtung der Mischschnecke (7) aufweisen.Mixing dryer according to claim 8, characterized in that the arms (9, 9a) have an additional conveying effect for the medium in the axial direction of the mixing screw (7). Mischtrockner nach Anspruch 8, dadurch gekennzeichnet, daß die Mischschnecke (7) von unten, vom Behälterboden (3) angetrieben ist, während das weitere Mischwerk (8) mit den Auslegern (9,9a) von der Deckelseite (1) des Behälters aus angetrieben ist.Mixing dryer according to claim 8, characterized in that the mixing screw (7) from below, from Container bottom (3) is driven, while the further mixer (8) with the arms (9, 9a) is driven from the lid side (1) of the container. Mischtrockner nach den Ansprüchen 8 bis 10, dadurch gekennzeichnet, daß sowohl die Mischschnecke (7) als auch das weitere Mischwerk (8) konzentrisch zueinander von der Deckel- oder Bodenseite (1,3) des Behälters angetrieben sind.Mixing dryer according to claims 8 to 10, characterized in that both the mixing screw (7) and the further mixing mechanism (8) are driven concentrically to one another by the top or bottom side (1, 3) of the container. Mischtrockner nach Anspruch 8, dadurch gekennzeichnet, daß die Ausleger (9,9a) zu ihrem Drehantrieb an der Behälterinnenseite des Mischtrockners selbst noch eine drehende Bewegung ausführen.Mixing dryer according to Claim 8, characterized in that the arms (9, 9a) themselves still perform a rotating movement in relation to their rotary drive on the inside of the mixing dryer. Mischtrockner nach Anspruch 8, dadurch gekennzeichnet, daß die Ausleger (9,9a) des Mischwerkes (8) mit einem ringförmigen Führungslager (10) an der Außenwandung des Heizmantels (6) geführt werden.Mixing dryer according to claim 8, characterized in that the arms (9, 9a) of the mixing unit (8) are guided on the outer wall of the heating jacket (6) with an annular guide bearing (10).
EP19900107482 1990-03-28 1990-04-19 Mixer-dryer, or apparatus for working or processing liquid, pasty, moist and dry products Withdrawn EP0448766A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4009926A DE4009926A1 (en) 1990-03-28 1990-03-28 MIXED DRYER OR DEVICE FOR THE PROCESSING AND PROCESSING OF LIQUID, PASTOES, MOISTURE AND DRY PRODUCTS
DE4009926 1990-03-28

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EP0448766A2 true EP0448766A2 (en) 1991-10-02
EP0448766A3 EP0448766A3 (en) 1992-08-19

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EP0536650A1 (en) * 1991-10-11 1993-04-14 Alb. Klein GmbH & Co. KG Process and apparatus for drying moist substances
EP0538065A1 (en) * 1991-10-16 1993-04-21 Masao Kanai Drying apparatus
ES2068776A1 (en) * 1993-10-14 1995-04-16 Talleres Landaluce S A System for drying bagasse and other moist by-products
WO1995013512A1 (en) * 1993-11-12 1995-05-18 Edwin Eisenegger Process for the thermal treatment of a pourable solid material, a mixing device for carrying this out and a material produced by this process
CN101441026B (en) * 2008-12-28 2010-10-27 嘉兴赞宇科技有限公司 Combined type vacuum drier
CN106382798A (en) * 2016-08-30 2017-02-08 安徽省中阳管业有限公司 Steel belt drying device with dewatering function
IT201600083988A1 (en) * 2016-08-09 2018-02-09 Metech S R L STORAGE TANK FOR IMPREGNATION RESINS
WO2020029052A1 (en) * 2018-08-06 2020-02-13 江苏荣达利机械有限公司 Material guide structure for three-cylinder drying machine
CN113883850A (en) * 2021-10-08 2022-01-04 温州天顺建筑安装工程有限公司 Factory building construction material drying process system

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EP0536650A1 (en) * 1991-10-11 1993-04-14 Alb. Klein GmbH & Co. KG Process and apparatus for drying moist substances
EP0538065A1 (en) * 1991-10-16 1993-04-21 Masao Kanai Drying apparatus
ES2068776A1 (en) * 1993-10-14 1995-04-16 Talleres Landaluce S A System for drying bagasse and other moist by-products
WO1995013512A1 (en) * 1993-11-12 1995-05-18 Edwin Eisenegger Process for the thermal treatment of a pourable solid material, a mixing device for carrying this out and a material produced by this process
CN101441026B (en) * 2008-12-28 2010-10-27 嘉兴赞宇科技有限公司 Combined type vacuum drier
IT201600083988A1 (en) * 2016-08-09 2018-02-09 Metech S R L STORAGE TANK FOR IMPREGNATION RESINS
EP3281682A1 (en) * 2016-08-09 2018-02-14 Metech S.r.l. Storage tank for impregnation resins
CN106382798A (en) * 2016-08-30 2017-02-08 安徽省中阳管业有限公司 Steel belt drying device with dewatering function
WO2020029052A1 (en) * 2018-08-06 2020-02-13 江苏荣达利机械有限公司 Material guide structure for three-cylinder drying machine
CN113883850A (en) * 2021-10-08 2022-01-04 温州天顺建筑安装工程有限公司 Factory building construction material drying process system

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EP0448766A3 (en) 1992-08-19
DE4009926A1 (en) 1991-10-02

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