DE815641C - Device for continuous mixing - Google Patents

Device for continuous mixing

Info

Publication number
DE815641C
DE815641C DEP55827A DEP0055827A DE815641C DE 815641 C DE815641 C DE 815641C DE P55827 A DEP55827 A DE P55827A DE P0055827 A DEP0055827 A DE P0055827A DE 815641 C DE815641 C DE 815641C
Authority
DE
Germany
Prior art keywords
worm
screw
shafts
snail
counter
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.)
Expired
Application number
DEP55827A
Other languages
German (de)
Inventor
Rudolf Dipl-Ing Erdmenger
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.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to DEP55827A priority Critical patent/DE815641C/en
Application granted granted Critical
Publication of DE815641C publication Critical patent/DE815641C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/482—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
    • B29B7/483—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs the other mixing parts being discs perpendicular to the screw axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/405—Intermeshing co-rotating screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/402—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Description

Zum kontinuierlichen Mischen von flüssigen, plastischen oder pulverförmigen Stoffen sind Vorrichtungen bekanntgeworden, die aus der Kombination von zwei oder mehreren Schnecken oder Schraubenwellen bestehen. Diese rotieren in einem dicht an den äußeren Umfang der Schneckenkämme anschließenden Gehäuse und können so geformt sein, daß die Gewindenut einer Schnecke durch den eingreifenden Kamm der Gegenschnecke(n) weitgehend abgedichtet ist. Der Grad der Mischwirkung dieser Systeme hängt im allgemeinen ab von der Größe der Relativbewegung zwischen verschiedenen Stoffteilchen und ist daher stark abhängig von den Reibungskräften zwischen Mischgut und Schneckenoberfläche bzw. Gehäusewand. Bei Vorrichtungen mit entgegengesetzt rotierenden Wellen ist ferner schon vorgeschlagen worden, durch allmählicheVerkleinerung einer Schneckennut den in ihr befindlichen Stoff in die Nuten der Gegenschnecke zu pressen, wobei enge Spalten zu passieren sind und eine weitere Homogenisierung des Produktes bewirkt wird. For continuous mixing of liquid, plastic or powdery Substances have become known that consist of the combination of two or devices consist of several screws or screw shafts. These rotate in a dense manner housing adjoining the outer circumference of the worm crests and can be shaped in this way be that the thread groove of a worm through the engaging crest of the counter worm (s) is largely sealed. The degree of mixing action of these systems generally depends ab on the size of the relative movement between different material particles and is therefore strongly dependent on the frictional forces between the mix and the screw surface or housing wall. For devices with oppositely rotating shafts is also has already been proposed by gradually reducing the size of a worm groove to press the substance in it into the grooves of the counter-worm, whereby tight Gaps are to be passed and causes a further homogenization of the product will.

Ein Nachteil dieser Konstruktion ist, daß die Stoffteilchen während ihres axialen Durchgangs durch die Maschine jeweils nur einmal die Passage zur Nachbarschnecke vollführen, d. h. nur einmal den dabei auftretenden Scherkräften ausgesetzt sind. Es ist oft wünschenswert, daß ein häufiger Wechsel dieser Art stattfindet, um z. B. noch unvollkommene Mischungen zu verbessern. Auch bedingen solche Schnecken mit Veränderung der Nutbreite besondere werkstattechnische Fertigkeit bei der Herstellung. Verzichtet man auf die geschilderte besondere Gestaltung der Schnecken, so bleibt die zu verarbeitende Masse im allgemeinen fast völlig in den Nutkammern einer Schraube, d. h., wird mit ihr axial ausgetragen, ohne daß auf sie nennenswerte Scherkräfte wirken. A disadvantage of this design is that the particulate matter during of their axial passage through the machine, the passage to the neighboring screw only once perform, d. H. are exposed to the shear forces that occur only once. It is often desirable that a frequent change of this type takes place in order to e.g. B. to improve still imperfect mixtures. Such snails are also conditional Change of the groove width special workshop technical skill in production. If you do without the described special design of the snails, it remains the mass to be processed is generally almost entirely in the groove chambers of a screw, d. that is, it is carried axially with it without any significant shear forces acting on it works.

Gegenstand der vorliegenden Erfindung ist eine Vorrichtung zum kontinuierlichen Mischen von flüssigen, plastischen oder pulverförmigen Körpern bzw. zur Durchführung von chemischen Reaktionen aus Komponenten beliebigen Aggregatzustandes zu Produkten der oben genannten Art, bei der sich zwei oder mehrere ein- oder mehrgängige Schneckenwellen in einem dicht an den äußeren Umfang der Schneckenkämme anschließenden Gehäuse in entgegengesetzter oder gleichsinniger Umlaufrichtung drehen, und bei der die Gewindenut einer Schnecke durch den eingreifenden Kamm der Gegenschnecke(n) an den Flankenberührungsstellen möglichst vollständig abgedichtet ist, die dadurch gekennzeichnet ist, daß auf den Schneckenwellen wechselseitig Stauscheiben in Abständen angeordnet sind, so daß der zu knetende Stoff während seiner Wanderung durch das Schneckengehäuse gezwungen wird, in stetem Wechsel von einer Schneckenwelle zur anderen überzutreten. Dabei muß die Masse unter Drucksteigerung die Spalten zwischen dem Gehäusegrad und den beiden Grwindeflanken der ineinandergreifenden Schnecken passieren. The present invention is an apparatus for continuous Mixing of liquid, plastic or powdery bodies or for implementation of chemical reactions from components of any aggregate state to products of the type mentioned above, in which two or more single or multi-start worm shafts in a housing adjoining the outer circumference of the worm crests in rotate in the opposite or in the same direction of rotation, and in which the thread groove a worm through the engaging crest of the counter worm (s) at the flank contact points is sealed as completely as possible, which is characterized in that on the Screw shafts alternately baffle plates are arranged at intervals so that the material to be kneaded is forced through the snail shell during its migration is to step over in constant change from one worm shaft to the other. Included must the mass under pressure increase the gaps between the housing grade and the pass both base flanks of the interlocking snails.

Im übrigen werden ganz allgemein der Wälz-und Mischeffekt durch das wiederholte Umlenken des Stoffes verbessert und bei gleicher Drehzahl die Verweilzeiten des Stoffes verlängert. In general, the rolling and mixing effect is achieved by the Repeated deflection of the material improves the dwell times at the same speed of the substance extended.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes schematisch für den Fall gleichsinnig rotierender Wellen dargestellt. The drawing shows an embodiment of the subject matter of the invention shown schematically for the case of co-rotating shafts.

Auf den beiden Schneckenwellen I und 2 sind in Abständen wechselseitig Stauscheiben 3, 4, 5 angeordnet, welche bewirken, daß der beispielsweise von rechts kommende Stoffluß zunächst auf eine Welle, hier die untere, konzentriert und sodann von einer Schnecke zur anderen zwangsläufig üherwechselt (Pfeile X und Y). Hierbei muß die Masse zwangsläufig unter Drucksteigerung die dreieckförmigen Spalten (Schnitt c-d) passieren, die gebildet sind von dem Gehäusegrat 6 und den beiden, in der Pfeilrichtung sich bewegenden Flanken 7 und 8 der ineinandergreifenden Schnecken I und 2. On the two worm shafts I and 2 are alternating at intervals Baffle plates 3, 4, 5 arranged, which cause the, for example, from the right Coming flow of matter first on a wave, here the lower one, concentrated and then inevitably changes from one screw to the other (arrows X and Y). Here the mass must inevitably break the triangular gaps (section c-d), which are formed by the housing ridge 6 and the two, in the direction of the arrow moving flanks 7 and 8 of intermeshing screws I and 2.

Im Schnitt a-b ist durch Pfeile die Richtung des um das Schneckenpaket umlaufenden Stoffes dargestellt, der im Bereich der linsenförmigen Wellenverschneidung scharf um den Gehäusegrat 6 von der Nut der Schnecke 1 zur Nut der Schnecke 2 umgelenkt wird.In section a-b, the direction of the around the screw package is indicated by arrows revolving material shown in the area of the lenticular wave intersection Sharply deflected around the housing ridge 6 from the groove of the worm 1 to the groove of the worm 2 will.

Die Stauscheiben sind ohne Schwierigkeit in einer vorher zu stechenden Nut der Schnecke vorzugsweise zweiteilig einzusetzen (Schnitt c-f). Die Abstände und die Anzahl der Scheiben werden der Eigenart der Stoffe angepaßt. The baffle plates can be stabbed in advance without difficulty Use two parts of the screw groove (section c-f). The distances and the number of disks are adapted to the nature of the fabrics.

Claims (1)

PATENTANSPRUCH: Vorrichtung zum kontinuierlichen SIiscl.en von flüssigen, plastischen oder pulverförmigen Körpern bzw. zur Durchführung von chemischen Reaktionen aus Komponenten beliebigen Aggregatzustandes zu Produkten der obengenannten Art, bei der sich zwei oder mehrere ein- oder mehrgängige Schneckenwellen in einem dicht an den äußeren Umfang der Schneckenkämme anschließenden Gehäuse in entgegengesetzter oder gleichsinniger Umlaufrichtung drehen, und bei der die Gewindenut einer Schnecke durch den eingreifenden Kamm der Gegenschnecke (n) an den Flankenberührungsstellen möglichst vollständig abgedichtet ist, dadurch gekennzeichnet, daß auf den Schneckenwellen wechselseitig Stauscheiben in Abständen angeordnet sind, so daß der zu knetende Stoff während seiner Wanderung durch das Schneckengehäuse gezwungen wird, in stetem Wechsel von einer Schnecken welle zur anderen üherzutreten. PATENT CLAIM: Device for the continuous SIiscl.en of liquid, plastic or powdery bodies or for carrying out chemical reactions from components of any aggregate state to products of the above-mentioned type, in which two or more single or multiple screw shafts are tightly packed in one on the outer circumference of the screw crests adjoining housing in opposite directions or rotate in the same direction of rotation, and in which the thread groove of a worm by the engaging crest of the counter-worm (s) at the flank contact points is sealed as completely as possible, characterized in that on the worm shafts alternately baffle plates are arranged at intervals so that the to be kneaded Substance is forced in steady during its migration through the snail shell Stepping over from one snail shaft to another.
DEP55827A 1949-09-24 1949-09-24 Device for continuous mixing Expired DE815641C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP55827A DE815641C (en) 1949-09-24 1949-09-24 Device for continuous mixing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP55827A DE815641C (en) 1949-09-24 1949-09-24 Device for continuous mixing

Publications (1)

Publication Number Publication Date
DE815641C true DE815641C (en) 1951-10-04

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ID=7388032

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP55827A Expired DE815641C (en) 1949-09-24 1949-09-24 Device for continuous mixing

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1004312B (en) * 1953-12-05 1957-03-14 Metallgesellschaft Ag Process and device for the continuous splitting and / or gasification of hydrocarbons, which can also contain other organic compounds
DE1180718B (en) * 1962-04-11 1964-11-05 Bayer Ag Kneading device with two or more screws
DE2650742A1 (en) * 1975-11-28 1977-06-08 Baker Perkins Inc MIXER
DE2827877A1 (en) * 1978-06-24 1980-01-17 Josef A Blach Twin-shaft plastics extruder - in which material is prevented from access to vents by large dia. rings on shaft adjacent to vents
DE3738700A1 (en) * 1987-11-14 1989-06-01 Werner & Pfleiderer DOUBLE SCREW EXTRUDER
DE4200788A1 (en) * 1992-01-15 1993-07-22 Bayer Ag SNAIL MACHINE WITH STOCK ELEMENTS
EP0513431B1 (en) * 1991-05-14 1996-01-10 Josef A. Blach Device for preparing and extruding materials

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1004312B (en) * 1953-12-05 1957-03-14 Metallgesellschaft Ag Process and device for the continuous splitting and / or gasification of hydrocarbons, which can also contain other organic compounds
DE1180718B (en) * 1962-04-11 1964-11-05 Bayer Ag Kneading device with two or more screws
DE2650742A1 (en) * 1975-11-28 1977-06-08 Baker Perkins Inc MIXER
DE2827877A1 (en) * 1978-06-24 1980-01-17 Josef A Blach Twin-shaft plastics extruder - in which material is prevented from access to vents by large dia. rings on shaft adjacent to vents
DE3738700A1 (en) * 1987-11-14 1989-06-01 Werner & Pfleiderer DOUBLE SCREW EXTRUDER
US4900156A (en) * 1987-11-14 1990-02-13 Werner & Pfleiderer Gmbh Twin screw extruder with thread-free mixing zones
EP0513431B1 (en) * 1991-05-14 1996-01-10 Josef A. Blach Device for preparing and extruding materials
DE4200788A1 (en) * 1992-01-15 1993-07-22 Bayer Ag SNAIL MACHINE WITH STOCK ELEMENTS

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