EP0804278B1 - Mixing and kneading device - Google Patents

Mixing and kneading device Download PDF

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Publication number
EP0804278B1
EP0804278B1 EP96901295A EP96901295A EP0804278B1 EP 0804278 B1 EP0804278 B1 EP 0804278B1 EP 96901295 A EP96901295 A EP 96901295A EP 96901295 A EP96901295 A EP 96901295A EP 0804278 B1 EP0804278 B1 EP 0804278B1
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EP
European Patent Office
Prior art keywords
mixing
kneading
shaft
elements
housing
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EP96901295A
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German (de)
French (fr)
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EP0804278A1 (en
Inventor
Jörg M. LIST
Walther Schwenk
Alfred Kunz
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List AG
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List AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B01F27/707—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms the paddles co-operating, e.g. intermeshing, with elements on the receptacle wall

Definitions

  • the invention relates to a mixing and kneading device for the particular thermal treatment of products in liquid, pasty and / or powdery state with or without supply and discharge of gases and vapors in one housing, in which a shaft rotates on the disc segments or the like.
  • Disc-like elements are arranged which with interacting kneading counter elements fixed on the housing, being between the kneading counter elements or the kneading counter elements and an open space for the disc segments (Torusraum) is formed, in which a plurality of mixing arms intervene from the shaft.
  • Such mixing and kneading devices are, for example, from the DE-PS 23 49 106 or the US-PS 3,687,422 known. These arrangement shown already guarantees a very good Mixing and kneading effect. Furthermore, product increments on, in particular, heated device elements, such as a shaft, Housing wall, disc segments and the like. Avoided effectively.
  • Ep-A-0 220 575 is a mixing and kneading device known in a toroidal space between two kneading counter elements a single mixing arm engages. From DE-C-36 35 877, however, a mixer dryer is known in which of the shaft that also carries the disc segments, one A plurality of mixing arms of different designs in engage a toroidal space between two disc segments.
  • the present invention is based on the object To improve the mixing and kneading effect in the torus area.
  • the mixing arms result in succession are designed around the shaft that through them essentially the entire toroidal axial cross section is processed.
  • the different design of the mixing arms is said to be so take place that by means of relatively slim mixing arms the entire Torus space is processed. That is, it will be inside Avoided areas of the Torusraum not processed, whereby the mixing and kneading effect is significantly improved. This results in a more even distribution of the Product because there are more elements that make up the product move. This also improves the mixing effect. Furthermore, it is avoided that mixing arms are only ever on one predetermined path move, it being, for example, a Torus collapses, then to significant force peaks for the wave is coming. Because of the different Design of the mixing arms, the product is evenly in distributed to the machine, so that the force absorption of the shaft is evened out.
  • Each mixing arm preferably consists of one stem and one Crossbar.
  • the trunk has a different length.
  • the Trunk also have the same length and up to about Project in the middle of the torus area. But the crossbar is against it of mixing arms within an annular Torus space designed differently. He can be weird be employed, rotated, curved, twisted, Z or S-shaped od. Like .. Many configurations are conceivable here, which are intended to be encompassed by the invention.
  • FIG drum-shaped housing 1 A mixing and kneading device according to FIG drum-shaped housing 1 shown, in which a shaft 2 turns. On this shaft 2 are spaced apart Disc segments 3 arranged near an inner wall 4th of the housing 1 of a kneading bar 5.
  • scraper arm 10 merges into a shaft arm 11, which in turn is approximately parallel to shaft 2 and axially parallel to Longitudinal axis A runs counter to the kneading arm 9.
  • Scraper arm 10 and shaft arm 11 essentially have the task Product incrustations on the disc segments 3 and Prevent wave 2 as these two elements of a kneading and Mixing device are usually heated.
  • the Kneading bar 5 also has this task compared to Inner wall 4, wherein the kneading bar 5 additionally Performs product kneading in the kneading gaps 6.
  • the crossbar 16 is always of the same design, but the stem 15 has different lengths l 1 , l 2 and l 3 for different mixing arms 14.1, 14.2 and 14.3 within an annular toroidal space 12.
  • This makes it possible to machine the entire toroidal space 12 with one revolution of the shaft 2, so that there are no dead zones within the toroidal space 12 in which the product could possibly remain.
  • the product is kept in motion, product incrustation is reduced and the kneading effect is significantly improved.
  • there is a reduction in force absorption peaks when the shaft 2 is rotated since the product is always processed by at least two mixing arms 14. For the subsequent mixing arm there is no possibility to drive through the product in the same lane that was created by the leading mixing arm.
  • the trunk 15 always has the same length so that it is roughly in the middle of the toroid 12 ends. It is indicated in FIG. 3 that the crossbar 16 do not, as shown in Figure 1, run axially parallel must be arranged, but inclined to the longitudinal axis A. can. Then within an annular toroidal space different crossbars shown with themselves Alternate crossbars running parallel to the axis.
  • crossbars can, however, as in FIGS. 4 and 5 shown to be wavy or S-shaped. Conceivable are also C-shaped crossbars or those that zigzag run. This depends on the person to be treated Product.
  • torus 12 is only indicated by dashed lines.
  • a finger-shaped mixing arm 14.7 engages in it Querfinger points 17 times to the left and once to the right and whose trunk 15.7 has a different length.
  • the cross section of the element that appears important drive through the product includes the Mixing arm 14 but also the kneading bar 5, an edge of the Disc segment 3 and the kneading counter element 7.
  • Preferred the cross-section is ploughshare-like, this being the case a simple triangular cross section according to FIG. 8 can.

Abstract

PCT No. PCT/EP96/00189 Sec. 371 Date Jul. 15, 1997 Sec. 102(e) Date Jul. 15, 1997 PCT Filed Jan. 18, 1996 PCT Pub. No. WO96/22156 PCT Pub. Date Jul. 25, 1996In the case of a mixing and kneading apparatus for the, in particular, thermal treatment of products in the liquid, pasty and/or pulverulent state, with or without the supply and discharge of gases and vapors, in a housing (1), a shaft (2) rotating in said housing and having disk segments (3) or similar disc-like elements arranged on it, which segments or elements interact with mating kneading elements (7) fixed on the housing, the intention is to form, between the mating kneading elements (7), and between the mating kneading elements and the disk segments, an open space (12) in which a mixing arm (14) engages from the shaft (2). In this case, mixing arms (14) of different configurations engage in the open space (toric space 12) from the shaft (2).

Description

Die Erfindung betrifft eine Misch- und Knetvorrichtung für die insbesondere thermische Behandlung von Produkten in flüssigem, pastösem und/oder puverförmigem Zustand mit oder ohne Zu- und Abführung von Gasen und Dämpfen in einem Gehäuse, in welchem eine Welle dreht, an der Scheibensegmente od. dgl. scheibenähnliche Elemente angeordnet sind, die mit am Gehäuse festgelegten Knetgegenelementen zusammenwirken, wobei zwischen den Knetgegenelementen bzw. den Knetgegenelementen und den Scheibensegmenten ein offener Raum (Torusraum) gebildet ist, in den eine Mehrzahl von Mischarmen von der Welle her eingreifen.The invention relates to a mixing and kneading device for the particular thermal treatment of products in liquid, pasty and / or powdery state with or without supply and discharge of gases and vapors in one housing, in which a shaft rotates on the disc segments or the like. Disc-like elements are arranged which with interacting kneading counter elements fixed on the housing, being between the kneading counter elements or the kneading counter elements and an open space for the disc segments (Torusraum) is formed, in which a plurality of mixing arms intervene from the shaft.

Derartige Misch- und Knetvorrichtungen sind bspw. aus der DE-PS 23 49 106 oder der US-PS 3 687 422 bekannt. Die dort gezeigte Anordnung gewährleistet bereits eine sehr gute Misch- und Knetwirkung. Ferner werden Produktankrustungen an insbesondere beheizten Vorrichtungselementen, wie Welle, Gehäusewand, Scheibensegmenten und dgl. wirksam vermieden.Such mixing and kneading devices are, for example, from the DE-PS 23 49 106 or the US-PS 3,687,422 known. These arrangement shown already guarantees a very good Mixing and kneading effect. Furthermore, product increments on, in particular, heated device elements, such as a shaft, Housing wall, disc segments and the like. Avoided effectively.

Bei bestimmten Produkten, insbesondere bei zähviskos pastösen Produkten, kommt es jedoch vor, dass sich in denjenigen Bereichen zwischen zwei Scheibensegmenten, in denen keine Produktebehandlung durch ein Knetgegenelement stattfindet, ein Produkttorus aufbaut, der im negativsten Fall dort stehenbleiben kann und nicht weiter geknetet wird. Um dies zu vermeiden bietet sich ein Mischerarm an, der an der Welle befestigt ist und in den Torusraum eingreift. Hierdurch wird die Bildung eines Totraumes vermieden, in welchem das Produkt keiner Behandlung unterworfen wird. With certain products, especially with viscous pasty ones Products, however, it happens that in those Areas between two disc segments in which none Product treatment takes place through a kneading counter element, builds up a product torus, which in the worst case there can stop and is no longer kneaded. To do this A mixer arm attached to the Shaft is attached and engages in the torus. Hereby the formation of a dead space is avoided in which the product is not subjected to any treatment.

Aus der Ep-A-0 220 575 ist eine Misch- und Knetvorrichtung bekannt, bei der in einen Torusraum zwischen zwei Knetgegenelementen ein einzelner Mischarm eingreift. Aus der DE-C-36 35 877 ist dagegen ein Mischtrockner bekannt, bei dem von der Welle, die auch die Scheibensegmente trägt, eine Mehrzahl von Mischarmen unterschiedlicher Ausgestaltung in einen Torusraum zwischen zwei Scheibensegmenten eingreifen.Ep-A-0 220 575 is a mixing and kneading device known in a toroidal space between two kneading counter elements a single mixing arm engages. From DE-C-36 35 877, however, a mixer dryer is known in which of the shaft that also carries the disc segments, one A plurality of mixing arms of different designs in engage a toroidal space between two disc segments.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die Misch- und Knetwirkung im Torusraum zusätzlich zu verbessern.The present invention is based on the object To improve the mixing and kneading effect in the torus area.

Zur Lösung dieser Aufgabe führt, dass die Mischarme aufeinanderfolgend um die Welle herum so ausgestaltet sind, dass durch sie im wesentlichen der gesamte Torusraumaxialquerschnitt bearbeitet wird.To accomplish this task, the mixing arms result in succession are designed around the shaft that through them essentially the entire toroidal axial cross section is processed.

Die unterschiedliche Ausgestaltung der Mischarme soll so erfolgen, dass mittels relativ schlanken Mischarmen der gesamte Torusraum bearbeitet wird. D.h., es werden innerhalb des Torusraumes nicht bearbeitete Räume vermieden, wodurch die Misch- und Knetwirkung wesentlich verbessert wird. Dabei kommt es zu einer gleichmässigeren Verteilung des Produktes, da mehr Elemente vorhanden sind, die das Produkt bewegen. Auch hierdurch wird die Mischwirkung verbessert. Ferner wird vermieden, dass Mischarme immer nur auf einer vorbestimmten Bahn sich bewegen, wobei es, wenn bspw. ein Torus zusammenfällt, dann zu erheblichen Kraftaufnahmespitzen für die Welle kommt. Durch die unterschiedliche Ausgestaltung der Mischarme wird das Produkt gleichmäßig in der Maschine verteilt, so dass die Kraftaufnahme der Welle vergleichmässigt ist.The different design of the mixing arms is said to be so take place that by means of relatively slim mixing arms the entire Torus space is processed. That is, it will be inside Avoided areas of the Torusraum not processed, whereby the mixing and kneading effect is significantly improved. This results in a more even distribution of the Product because there are more elements that make up the product move. This also improves the mixing effect. Furthermore, it is avoided that mixing arms are only ever on one predetermined path move, it being, for example, a Torus collapses, then to significant force peaks for the wave is coming. Because of the different Design of the mixing arms, the product is evenly in distributed to the machine, so that the force absorption of the shaft is evened out.

Bevorzugt besteht jeder Mischarm aus einem Stamm und einem Querbalken. In einem Ausführungsbeispiel der Erfindung ist daran gedacht, den Querbalken immer gleich auszugestalten, während der Stamm eine unterschiedliche Länge aufweist.Each mixing arm preferably consists of one stem and one Crossbar. In one embodiment of the invention thought of always designing the crossbar the same, while the trunk has a different length.

Bei einem anderen Ausführungsbeispiel kann dagegen der Stamm auch eine gleiche Länge aufweisen und bis etwa in die Mitte des Torusraumes einragen. Dagegen ist aber der Querbalken von Mischarmen innerhalb eines ringförmigen Torusraumes unterschiedliche ausgestaltet. Er kann schräg angestellt sein, gedreht, gekrümmt, getwistet, Z- oder S-förmig od. dgl.. Hier sind viele Ausgestaltungen denkbar, die von der Erfindung umfasst sein sollen.In another embodiment, however, the Trunk also have the same length and up to about Project in the middle of the torus area. But the crossbar is against it of mixing arms within an annular Torus space designed differently. He can be weird be employed, rotated, curved, twisted, Z or S-shaped od. Like .. Many configurations are conceivable here, which are intended to be encompassed by the invention.

Damit der Mischarm besser durch das Produkt fahren kann, sollte dieser querschnittlich pflugscharartig ausgestaltet sein. Auch hierbei gibt es verschiedene Variationen, die von dem zu bearbeitenden Produkt abhängen. So that the mixing arm can drive better through the product, this should be designed like a ploughshare be. There are also different variations here depend on the product to be processed.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in

  • Figur 1 einen Längsschnitt durch einen Teil einer erfindungsgemässen Knet- und Mischeinrichtung;
  • Figur 2 einen Querschnitt durch die Knet- und Mischeinrichtung gemäss Figur 1;
  • Figur 3 bis 6 Draufsichten auf verschiedene Ausführungsbeispiele von Mischarmen in einem von zwei Knetgegenelementen gebildeten Torusraum;
  • Figuren 7 bis 9 Querschnitt durch verschiedene Ausführungsbeispiele von Mischarmen.
    • Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing; this shows in
  • 1 shows a longitudinal section through part of a kneading and mixing device according to the invention;
  • FIG. 2 shows a cross section through the kneading and mixing device according to FIG. 1;
  • 3 to 6 are top views of various exemplary embodiments of mixing arms in a toroidal space formed by two kneading counter-elements;
  • Figures 7 to 9 cross section through various embodiments of mixing arms.

    • Von einer Misch- und Kneteinrichtung ist gemäss Figur 1 ein trommelförmiges Gehäuse 1 gezeigt, in dem eine Welle 2 dreht. An dieser Welle 2 sind voneinander beabstandet Scheibensegmente 3 angeordnet, die nahe einer Innenwand 4 des Gehäuses 1 eines Knetbalkens 5 tragen.A mixing and kneading device according to FIG drum-shaped housing 1 shown, in which a shaft 2 turns. On this shaft 2 are spaced apart Disc segments 3 arranged near an inner wall 4th of the housing 1 of a kneading bar 5.

    Beim Drehen der Welle 2 in Richtung z (siehe Figur 2) durchfahren die Knetbalken 5 Knetspalte 6, welche im Zusammenwirken mit der Innenwand 4 von Knetgegenelementen 7 gebildet sind. Im vorliegenden Ausführungsbeispiel sind die Knetgegenelemente 7 C-förmig aufgebaut. Sie sind über einen Fuss 8 am Gehäuse 1 festgelegt. Im Anschluss an den Fuss 8 verläuft ein Knetarm 9 etwa parallel zu der Innenwand 4 in Richtung der Längsachse A des Gehäuses 1. Dieser Knetarm 9 bildet zusammen mit der innenwand 4 den Knetspalt 6. An den Knetarm 9 schliesst ein Schabarm 10 an, der etwa radial zur Welle 2 hin nahe dem Scheibensegment 3 verläuft. Nahe der Welle 2 geht dieser Schabarm 10 in einen Wellenarm 11 über, der wiederum etwa parallel zur Welle 2 und achsparallel zur Längsachse A entgegen dem Knetarm 9 verläuft. Schabarm 10 und Wellenarm 11 haben im wesentlichen die Aufgabe, Produktankrustungen an den Scheibensegmenten 3 und der Welle 2 zu verhindern, da diese beiden Elemente einer Knet- und Mischvorrichtung in der Regel beheizt sind. Der Knetbalken 5 hat ebenfalls diese Aufgabe gegenüber der Innenwand 4, wobei der Knetbalken 5 noch zusätzlich die Produktknetung in den Knetspalten 6 durchführt.When rotating shaft 2 in direction z (see Figure 2) pass through the kneading bars 5 kneading gaps 6, which in the Cooperation with the inner wall 4 of kneading counter elements 7 are formed. In the present embodiment, the Kneading counter elements 7 C-shaped. You are about one Foot 8 fixed to the housing 1. Following foot 8 A kneading arm 9 runs approximately parallel to the inner wall 4 in Direction of the longitudinal axis A of the housing 1. This kneading arm 9 forms the kneading gap 6 together with the inner wall 4 Kneading arm 9 connects to a scraping arm 10, which is approximately radial to Wave 2 runs near the disc segment 3. Close to Wave 2 this scraper arm 10 merges into a shaft arm 11, which in turn is approximately parallel to shaft 2 and axially parallel to Longitudinal axis A runs counter to the kneading arm 9. Scraper arm 10 and shaft arm 11 essentially have the task Product incrustations on the disc segments 3 and Prevent wave 2 as these two elements of a kneading and Mixing device are usually heated. Of the Kneading bar 5 also has this task compared to Inner wall 4, wherein the kneading bar 5 additionally Performs product kneading in the kneading gaps 6.

    In der Regel sind in einem von zwei Scheibensegmenten 3 gebildeten Ringraum mehrere, jedoch mindestens zwei Knetgegenelemente 7 verteilt angeordnet. Dabei wechseln sich die Knetgegenelemente 7 in ihrer Richtung ab, wie dies in Figur 1 gestrichelt dargestellt ist. Sie bilden aber zusammen einen Torusraum 12, welcher zu weiten Teilen mit dem zu behandelnden Produkt ausgefüllt ist.As a rule, there are 3 in one of two disk segments formed annulus several, but at least two Kneading counter elements 7 arranged distributed. Change in the process the kneading counter elements 7 in their direction, like this is shown in dashed lines in Figure 1. But they form together a torus chamber 12, which largely with the product to be treated is filled out.

    Damit das Produkt aber in diesem Torusraum 12 ebenfalls in geeigneter Weise gemischt bzw. geknetet wird, ragen in diesen Torusraum 12 Mischerarme 14 ein. In Figur 1 sind die Mischarme als T-Finger ausgebildet, wobei jeder aus einem Stamm 15 und aus einem Querbalken 16 besteht.So that the product also in this torus 12 appropriately mixed or kneaded protrude into this torus 12 mixer arms 14. In Figure 1, the Mixing arms designed as T-fingers, each one Trunk 15 and consists of a crossbar 16.

    Erfindungsgemäss ist bei dem Ausführungsbeispiel gemäss den Figuren 1 und 2 der Querbalken 16 immer gleich ausgebildet, jedoch besitzt der Stamm 15 für verschiedene Mischarme 14.1, 14.2 und 14.3 innerhalb eines ringförmigen Torusraumes 12 eine unterschiedliche Länge l1, l2 und l3. Hierdurch ist es möglich, den gesamten Torusraum 12 bei einer Umdrehung der Welle 2 zu bearbeiten, so daß es innerhalb des Torusraumes 12 zu keinen Totzonen kommt, in denen möglicherweise das Produkt liegenbleiben könnte. Hierdurch wird das Produkt ständig in Bewegung gehalten, Produktankrustungen verringert und die Knetwirkung wesentlich verbessert. Ferner erfolgt eine Verringerung von Kraftaufnahmespitzen beim Drehen der Welle 2, da das Produkt immer von zumindest zwei Mischarmen 14 bearbeitet wird. Für den nachfolgenden Mischarm besteht nicht die Möglichkeit in der gleichen Spur durch das Produkt zu fahren, die von dem vorlaufenden Mischarm geschaffen wurde.According to the invention, in the exemplary embodiment according to FIGS. 1 and 2, the crossbar 16 is always of the same design, but the stem 15 has different lengths l 1 , l 2 and l 3 for different mixing arms 14.1, 14.2 and 14.3 within an annular toroidal space 12. This makes it possible to machine the entire toroidal space 12 with one revolution of the shaft 2, so that there are no dead zones within the toroidal space 12 in which the product could possibly remain. As a result, the product is kept in motion, product incrustation is reduced and the kneading effect is significantly improved. Furthermore, there is a reduction in force absorption peaks when the shaft 2 is rotated, since the product is always processed by at least two mixing arms 14. For the subsequent mixing arm there is no possibility to drive through the product in the same lane that was created by the leading mixing arm.

    Eine derartige Anordnung von unterschiedlich weit in den Torusraum einragenden, relativ schlanken Elementen, bietet sich vor allem bei Misch- und Knetvorrichtungen an, deren Innenraumdimensionen in einem bestimmten Verhältnis zueinander stehen. Die hierfür wichtigen Parameter sind der Abstand a der Welle 2 von der Innenwand 4 des Gehäuses 1, der sich aus der Hälfte eines Durchmessers d der Welle 2 und eines Innendurchmessers D des Gehäuses 1 bildet. Dieser Abstand a sollte grösser sein als 5S, wobei S die Breite des Fusses 8, des Stammes 15, des Qrnerbalkens 16, des Knetbalkens 5 od. dgl. sein kann. Erst wenn der Abstand a über diesem Mass von 5S liegt, lohnt sich in der Regel die Anordnung von unterschiedlichen Mischarmen.Such an arrangement of different distances in the Torus space protruding, relatively slim elements especially in mixing and kneading devices whose Interior dimensions in a certain ratio to stand by each other. The important parameters for this are Distance a of the shaft 2 from the inner wall 4 of the housing 1, which is made up of half a diameter d of the shaft 2 and an inner diameter D of the housing 1 forms. This Distance a should be greater than 5S, where S is the width of the foot 8, the trunk 15, the cross beam 16, the Kneading bar 5 or the like. Only when the distance a is above this level of 5S, it is usually worthwhile Arrangement of different mixing arms.

    In den Figuren 1 und 2 ist nur ein Ausführungsbeispiel von derartigen unterschiedlichen Mischarmen gezeigt. Weitere Ausführungsbeispiele finden sich in den Figuren 3 bis 6, wobei auch hierauf die Erfindung nicht beschränkt sein soll. Der Einfachheit halber wird dort ein Torusraum 12 immer von zwei zueinander angeordneten Knetgegenelementen 7.1 und 7.2 gebildet, obwohl dies in der Praxis nur versetzt zueinander vorkommt.In Figures 1 and 2 is only one embodiment of shown such different mixing arms. Further Exemplary embodiments can be found in FIGS. 3 to 6, the invention not being limited to this either should. For the sake of simplicity, there will be a toroidal space 12 always from two mutually arranged kneading counter elements 7.1 and 7.2 formed, although this is only offset in practice occurs to each other.

    Gemäss den Figuren 3 bis 5 besitzt der Stamm 15 immer die gleiche Länge, so dass er etwa in der Mitte des Torusraumes 12 endet. In Figur 3 ist angedeutet, dass der Querbalken 16 nicht, wie in Figur 1 dargestellt, achsparallel verlaufen muss, sondern geneigt zu der Längsachse A angeordnet sein kann. Innerhalb eines ringförmigen Torusraumes können dann unterschiedliche gezeigte Querbalken sich mit auch achsparallel verlaufenden Querbalken abwechseln. According to Figures 3 to 5, the trunk 15 always has the same length so that it is roughly in the middle of the toroid 12 ends. It is indicated in FIG. 3 that the crossbar 16 do not, as shown in Figure 1, run axially parallel must be arranged, but inclined to the longitudinal axis A. can. Then within an annular toroidal space different crossbars shown with themselves Alternate crossbars running parallel to the axis.

    Die Querbalken können aber auch, wie in Figur 4 und 5 gezeigt, wellenförmig oder S-förmig gebogen sein. Denkbar sind auch C-förmige Querbalken oder solche die im Zickzack verlaufen. Dies richtet sich je nach dem zu behandelnden Produkt.The crossbars can, however, as in FIGS. 4 and 5 shown to be wavy or S-shaped. Conceivable are also C-shaped crossbars or those that zigzag run. This depends on the person to be treated Product.

    In Figur 6 ist der Torusraum 12 nur gestrichelt angedeutet. In ihn greift ein fingerförmiger Mischarm 14.7 ein, dessen Querfinger 17 mal nach links und mal nach rechts zeigt und dessen Stamm 15.7 eine unterschiedliche Länge besitzt.In Figure 6, the torus 12 is only indicated by dashed lines. A finger-shaped mixing arm 14.7 engages in it Querfinger points 17 times to the left and once to the right and whose trunk 15.7 has a different length.

    Bei der Behandlung des gesamten Produktes im Torusraum 12 erscheint auch der Querschnitt der Element wichtig, die durch das Produkt fahren. Hierzu gehört vor allem der Mischarm 14 aber auch der Knetbalken 5, eine Randkante des Scheibensegmentes 3 und das Knetgegenelement 7. Bevorzugt ist der Querschnitt pflugscharartig ausgebildet, wobei dies ein einfacher dreieckiger Querschnitt gemäss Figur 8 sein kann.When treating the entire product in the torus 12 the cross section of the element that appears important drive through the product. Above all, this includes the Mixing arm 14 but also the kneading bar 5, an edge of the Disc segment 3 and the kneading counter element 7. Preferred the cross-section is ploughshare-like, this being the case a simple triangular cross section according to FIG. 8 can.

    Zur besseren Bildung einer Ableitfläche ist jedoch der Querschnitt pultartig gemäss Figur 7 ausgebildet, wobei eine Seite noch eine gestrichelt angedeutete Auskehlung haben kann. Hierdurch wird eine Ableitung des Produktes verbessert.For better formation of a discharge surface, however, is the Cross-section formed like a desk according to Figure 7, wherein one side still a dashed groove may have. This is a derivative of the product improved.

    Bei stark krustenden Produkten wird ein Querschnitt gemäss Figur 9 bevorzugt, der eine hohe Verdrängungsleistung und damit eine grosse Produktbewegung bewirkt.In the case of strongly crusting products, a cross-section is made according to Figure 9 preferred, the high displacement and thus causing a big product movement.

    Claims (4)

    1. Mixing and kneading apparatus for the processing, more especially the thermal processing, of products in a liquid, pasty and/or pulverulent state with or without a supply and discharge of gases and vapours in a housing (1), in which a shaft (2) rotates, on which shaft disc segments (3) or similar disc-like elements are disposed which co-operate with opposing kneading elements (7) secured to the housing (1), an open space (12) (toroidal space) being formed between the opposing kneading elements (7) or respectively the opposing kneading elements and the disc segments (3), into which space a plurality of mixing arms (14 - 14.7) project from the shaft (2), characterised in that the mixing arms (14 - 14.7), which are disposed on the shaft (2), are variable when viewed with respect to the circulatory direction of the shaft (2) and are configured in such a manner that the sum of the circulatory paths of these mixing arms (14 - 14.7) substantially fill the space between two disc segment arrangements not occupied by the circulatory paths of the opposing kneading elements (7).
    2. Mixing and kneading apparatus according to claim 1, characterised in that each mixing arm (14) comprises a stem (15) and a cross-piece member (16, 17), the stem (15.1, 15.2, 15.3) having a variable length (l1, l2, l3) and/or the cross-piece member (16.1, 16.2, 16.3, 17) having a variable configuration inside an annular toroidal space (12).
    3. Mixing and kneading apparatus according to claim 2, characterised in that the cross-piece members (16) of mixing arms (14) are inclinedly orientated, rotated, curved, twisted or the like inside a toroidal space (12) relative to a longitudinal axis (A) of the housing (1).
    4. Mixing and kneading apparatus according to claim 2 or 3, characterised in that the stem (15) and/or the cross-piece member (16, 17) have/has a ploughshare-like cross-section.
    EP96901295A 1995-01-18 1996-01-18 Mixing and kneading device Expired - Lifetime EP0804278B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    CH136/95 1995-01-18
    CH00136/95A CH688365A5 (en) 1995-01-18 1995-01-18 Mixing and kneading machine.
    PCT/EP1996/000189 WO1996022156A1 (en) 1995-01-18 1996-01-18 Mixing and kneading device

    Publications (2)

    Publication Number Publication Date
    EP0804278A1 EP0804278A1 (en) 1997-11-05
    EP0804278B1 true EP0804278B1 (en) 1998-12-16

    Family

    ID=4180075

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96901295A Expired - Lifetime EP0804278B1 (en) 1995-01-18 1996-01-18 Mixing and kneading device

    Country Status (10)

    Country Link
    US (1) US5934801A (en)
    EP (1) EP0804278B1 (en)
    AT (1) ATE174528T1 (en)
    AU (1) AU691078B2 (en)
    CA (1) CA2210639A1 (en)
    CH (1) CH688365A5 (en)
    DE (1) DE59600991D1 (en)
    DK (1) DK0804278T3 (en)
    ES (1) ES2126380T3 (en)
    WO (1) WO1996022156A1 (en)

    Cited By (1)

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    US9394626B2 (en) 2009-08-11 2016-07-19 List Holding Ag Method for treating a monomer, pre-polymer, polymer or a corresponding mixture

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    DE19940521C2 (en) * 1999-08-26 2003-02-13 List Ag Arisdorf mixing kneader
    US6991361B2 (en) * 2000-04-05 2006-01-31 Advanced Concrete Innovations, Inc. Portable concrete plant
    AU2001253194A1 (en) * 2000-04-05 2001-10-23 Advanced Concrete Innovations, Inc. Portable concrete plant
    US6410783B1 (en) 2000-10-19 2002-06-25 Basf Corporation Method of producing carboxylic acid salts
    WO2002089963A2 (en) * 2001-04-25 2002-11-14 List Ag Mixer bars cleaning in a radial or axial manner
    DE10331952A1 (en) * 2003-07-15 2005-02-10 Degussa Ag Apparatus and process for discontinuous polycondensation
    DE102010060320A1 (en) 2010-06-30 2012-02-16 List Holding Ag Process for the thermal separation of a solution of thermoplastic polymer and solvent
    DE102013100182A1 (en) * 2012-09-28 2014-06-05 List Holding Ag Method for carrying out mechanical, chemical and / or thermal processes
    CN103432949A (en) * 2013-07-31 2013-12-11 南京化工特种设备检验检测研究所 High-efficiency and low-consumption stirrer
    DE102014112579A1 (en) 2013-08-30 2015-03-05 List Holding Ag Process for producing a chemical substance
    US10527349B2 (en) 2014-06-12 2020-01-07 Hedinn Hf Apparatus for cooking and drying organic material
    US10384177B2 (en) 2014-08-13 2019-08-20 Versalis S.P.A. Rotor and stirring device

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    GB793456A (en) * 1955-05-31 1958-04-16 John Frederick William Harvey Improvements in automatic adjustment mechanism for hydraulic brakes
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    DE2123956C3 (en) * 1970-05-20 1979-09-20 Heinz Dipl.-Ing. Pratteln List (Schweiz) Mixing and kneading machine
    CH583061A5 (en) * 1972-10-18 1976-12-31 List Heinz
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    DE3538070A1 (en) * 1985-10-25 1987-04-30 Krauss Maffei Ag MIXING AND KNEADING DEVICE
    DE3635877C1 (en) * 1986-10-22 1987-10-15 Heinz Nienhaus Mixer dryer
    CH672749A5 (en) * 1986-12-19 1989-12-29 List Ag
    CH674472A5 (en) * 1987-05-06 1990-06-15 List Ag
    CH674318A5 (en) * 1987-08-28 1990-05-31 List Ag
    CH678285A5 (en) * 1988-02-16 1991-08-30 List Ag
    CH680196A5 (en) * 1988-02-16 1992-07-15 List Ag
    CH686406A5 (en) * 1990-04-11 1996-03-29 List Ag Continuously operating mixing kneader.
    DE4118884A1 (en) * 1991-06-07 1992-12-10 List Ag MIXING kneader

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US9394626B2 (en) 2009-08-11 2016-07-19 List Holding Ag Method for treating a monomer, pre-polymer, polymer or a corresponding mixture

    Also Published As

    Publication number Publication date
    DE59600991D1 (en) 1999-01-28
    US5934801A (en) 1999-08-10
    ES2126380T3 (en) 1999-03-16
    WO1996022156A1 (en) 1996-07-25
    AU4537396A (en) 1996-08-07
    ATE174528T1 (en) 1999-01-15
    EP0804278A1 (en) 1997-11-05
    CH688365A5 (en) 1997-08-29
    CA2210639A1 (en) 1996-07-25
    DK0804278T3 (en) 1999-08-23
    AU691078B2 (en) 1998-05-07

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