DD278092A1 - TWIN SCREW EXTRUDER REACTION - Google Patents
TWIN SCREW EXTRUDER REACTION Download PDFInfo
- Publication number
- DD278092A1 DD278092A1 DD88323402A DD32340288A DD278092A1 DD 278092 A1 DD278092 A1 DD 278092A1 DD 88323402 A DD88323402 A DD 88323402A DD 32340288 A DD32340288 A DD 32340288A DD 278092 A1 DD278092 A1 DD 278092A1
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- zone
- crusher
- grinding
- screw
- twin
- Prior art date
Links
Classifications
-
- 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
- B29C48/50—Details of extruders
- B29C48/68—Barrels or cylinders
- B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
- B29C48/686—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having grooves or cavities
-
- 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
-
- 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
- B29C48/25—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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/565—Screws having projections other than the thread, e.g. pins
-
- 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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
- B29C48/60—Thread tops
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
Der Doppelschnecken-Reaktionsextruder wird zur Herstellung von Feststoffprodukten in der Chemieindustrie angewendet. Das Ziel und die Aufgabe der Erfindung besteht darin, den apparativen Aufwand zur Nachbehandlung von Feststoffen, die durch chemische Umsetzung von Ausgangsstoffen im Doppelschnecken-Reaktionsextruder hergestellt werden, zu verringern und die Qualitaet des Produktes zu verbessern, indem der Feststoff im Extruder in eine fuer die Weiterverarbeitung guenstige Form zerkleinert und gemahlen wird. Die erfindungsgemaesse Loesung der Aufgabe sieht vor, im Doppelschnecken-Reaktionsextruder zwischen einer letzten Foerderzone und einer Austragszone eine Brecherzone mit Brecherbuchsen sowie nachfolgend eine Mahlzone mit Mahlbuchsen anzuordnen. In den Bereichen der Brecherzone und Mahlzone ist die Oberflaeche der Zylinderbohrung mit Riffelnuten versehen, die in Wirkverbindung mit den Zaehnen der Brecherbuchsen und Mahlbuchsen stehend das Feststoffgut zerkleinern und fein vermahlen. Fig. 1The twin-screw reaction extruder is used to produce solid products in the chemical industry. The aim and the object of the invention is to reduce the equipment required for the aftertreatment of solids which are produced by chemical reaction of starting materials in the twin-screw reaction extruder, and to improve the quality of the product by the solid in the extruder in one for the Further processing low-priced form is crushed and ground. The solution according to the invention provides for a crusher zone with crusher bushes and subsequently a refining zone with grinding bushes to be arranged in the twin-screw reaction extruder between a last conveying zone and a discharging zone. In the areas of the crusher zone and grinding zone, the surface of the cylinder bore is provided with corrugated grooves which, in operative connection with the teeth of the crusher bushings and grinding bushes, stand up and finely grind the solid material. Fig. 1
Description
Die Vorteile der Erfindung bestehen darin, daß der technische Aufwand zur Zoi kleinerung und Verfeinerung des Feststoffproduktes gegenüber dem bisher gebräuchlichen Vorfahren verringert wird, indem im DS-Reaktionsextrudif die Aufgabe der Zerkleinerung, Kühlung bzw. Nachkühlung des Produktes mit durchführbar ist, so daß separate Einrichtungen für das Zerkleinern und Kühlen des Produktes entfallen können.The advantages of the invention are that the technical complexity for Zoi kleinerung and refinement of the solid product compared to the previously used ancestor is reduced by the task of crushing, cooling or Nachkühlung of the product is feasible in the DS-Reaktionsextrudif so that separate facilities can be omitted for crushing and cooling the product.
Ein weiterer Vorteil der Erfindung ist in der Verbesserung der Qualtiät des Feststoffproduktes hinsichtlich der durch die Zerkleinerung und Verfeinerung der Körnung entstehenden Löslichkeit zu sehen, die in nachfolgenden Verarbeitungsstufen gefordert wird.A further advantage of the invention is to be seen in the improvement of the quality of the solid product with regard to the solubility resulting from the comminution and refinement of the granulation, which is required in subsequent processing stages.
Ausführungsbeispielembodiment
Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden. In der zugehörigen Zeichnung zeigt:The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawing shows:
Fig. 1: den Doppelschnecken-Reaktionsextruder im Längsschnitt rig.2: den Schnitt A-A nach Fig. 1 Fig.3: den Schnitt B-B nach Fig. 1.FIG. 1: the twin-screw reaction extruder in a longitudinal section. Rig.2: the section A-A according to FIG. 1 FIG. 3: the section B-B according to FIG. 1.
Die Darstellung nach Fig. 1 zeigt den Doppelschnecken-Reaktionsextruder im Längsschnitt mit den Schaftwellen 1 im Zylinder 2 und der letzten förderaktiven Funktionszone 3, in welcher der grobstückige Feststoff vorliegt, der in Förderrichtung Fin die Brecherzone 4 zur Vorzerkleinerui. j und daran anschließend in die Mahlzone 5 zur Vermahlung und danach zur Austragszone 6 mit der Austragsöffnung 7 transportiert wird.1 shows the twin-screw reaction extruder in longitudinal section with the shaft shafts 1 in the cylinder 2 and the last active conveying functional zone 3, in which the lumpy solid is present, in the conveying direction Fin the crusher zone 4 for Vorzerkleinerui. j and subsequently transported to the grinding zone 5 for grinding and then to the discharge zone 6 with the discharge opening 7.
In der Tig. 2 ist der Schnitt A-A nach Fig. 1 vergrößert dargestellt. Auf den Schaftwellen 1 sind die Brecherbuchsen 8 in kämmendem Eingriff stehend angeordnet. Auf dem abgeflachten Schneckensteg der Brecherbuchse 8 sind die Brecherzähne 9, mit in Drehrichtung der Schneckenweilen 1 abgeschrägter Zahnbrust 10 angeordnet. In der Oberfläche der Bohrung des Zylinders 2 sind in grober Teilung Riffalnuten 11 achsparallel oder mit Drall eingearbeitet, die in Wirkverbindung mit den Brecherbuchsen 9 den eingetragenen grobstückigen Feststoff zerkleinern, indem der Feststoff im Wirkspalt zwischen den Kanten der Riffelnuten 11 und denen der Brecherzähno 9 zertrümmert wird.In the tig. 2, the section A-A of FIG. 1 is shown enlarged. On the shaft shafts 1, the breaker bushes 8 are arranged standing in meshing engagement. On the flattened screw web of the crusher bushing 8, the crusher teeth 9, arranged in the direction of rotation of the Schneckenweil 1 beveled tooth face 10. In the surface of the bore of the cylinder 2 Riffalnuten 11 are incorporated axially parallel or twisted, which crush the registered lumpy solid in operative connection with the breaker bushes 9 by the solid smashed in the effective gap between the edges of the corrugated grooves 11 and those of Brecherzähno 9 becomes.
Die Fig.3 .-.eigt die Mahlzone 5 nach dem Schnitt B-B gemäß Fig. 1. Der aus dor Brecherzone transportierte zerkleinerte Feststoff erfährt zwischen den Mahlzähnei. 13 der Mahlburhsen 12 eine weitere Kornzerkleinerung durch das Vermählen.FIG. 3 shows the grinding zone 5 after section B-B according to FIG. 1. The comminuted solid transported from the breaker zone is passed between the grinding teeth. 13 of Mahlburhsen 12 a further grain size reduction by grinding.
in dem Schneckensteg der kämmenden Mahlbuchsen 12 sine' durch vorzugsweise achsparallele Ausarbeitungen die Mahlzähne 13 gebildet, die in Wirkverbindung mit den in der Oberfläche der Bohrung des Zylinders 2 in feiner Teilung eingebrachter. Riffelnuten 15 stehen. Im Wirkspalt zwischen den Kanten der Riffeinuten 15 und der Zahnbrust 14 der Mahlzähne 13 wird der Feststoff feinkörnig zermahlen und zum Austrag gefördert.in the screw flight of the intermeshing grinding bushes 12 sine 'formed by preferably axially parallel elaborations, the grinding teeth 13, which in operative connection with those in the surface of the bore of the cylinder 2 in fine pitch introduced. Rippelnuten 15 stand. In the effective gap between the edges of the Riffeinuten 15 and the tooth face 14 of the molars 13 of the solid is fine-grained and conveyed to the discharge.
Bezogen auf die Brecherzone ist die Anzahl der Riffelnuten im Zylinder 2 ungeradzahlig größer als die Anzahl der Brecherzähne.Based on the crusher zone, the number of corrugation grooves in the cylinder 2 is odd greater than the number of crusher teeth.
In der Mahlzone ist die Anzahl der Riffelnuten ebenfalls ungeradzahlig wesentlich größer als die Anzahl der Mahlzähne. Im Zwickelbereich der Bohrung des Zylinders 2 sind aus Gründen der Stabilität im Bereich der Brecherzene 4 und in der Mahlzone 5 keine Riffelnuten 14; 15 angeordnet.In the milling zone, the number of corrugation grooves is also oddly much larger than the number of molars. In the gusset region of the bore of the cylinder 2, for reasons of stability in the region of the crusher scene 4 and in the grinding zone 5, there are no corrugation grooves 14; 15 arranged.
Zur Kühlung des im DS-Extruder vorliegenden heißen Fesmoffproduktes und zur Intensivierung des Zerkleinerungs- und Mahlvorg3nge? ist vorgesehen, über die Bohrung 16 gemäß Fig. 1 ein gasfömiges inertes Kühlmedium einzuspeisen.For cooling the hot Fesmoff product present in the DS extruder and for intensifying the comminution and grinding process? is provided via the bore 16 of FIG. 1 to feed a gaseous inert cooling medium.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD88323402A DD278092A1 (en) | 1988-12-19 | 1988-12-19 | TWIN SCREW EXTRUDER REACTION |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD88323402A DD278092A1 (en) | 1988-12-19 | 1988-12-19 | TWIN SCREW EXTRUDER REACTION |
Publications (1)
Publication Number | Publication Date |
---|---|
DD278092A1 true DD278092A1 (en) | 1990-04-25 |
Family
ID=5605244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DD88323402A DD278092A1 (en) | 1988-12-19 | 1988-12-19 | TWIN SCREW EXTRUDER REACTION |
Country Status (1)
Country | Link |
---|---|
DD (1) | DD278092A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113492513A (en) * | 2021-07-09 | 2021-10-12 | 五邑大学 | Double-screw extrusion element and double-screw extruder |
-
1988
- 1988-12-19 DD DD88323402A patent/DD278092A1/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113492513A (en) * | 2021-07-09 | 2021-10-12 | 五邑大学 | Double-screw extrusion element and double-screw extruder |
CN113492513B (en) * | 2021-07-09 | 2023-01-03 | 五邑大学 | Double-screw extrusion element and double-screw extruder |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0370447B2 (en) | Method for the product-reserving milling and simultaneous drying of moist cellulose ethers | |
DE3332629C2 (en) | ||
EP1324869B1 (en) | Multi-screw extruder and method for treating and/or processing elastomers with added filler | |
DE2315587B2 (en) | Device for fine grinding of rubber | |
WO1984004955A1 (en) | Screw conveyor for discharging solid residues in high temperature and over-pressure conditions | |
EP2482987B1 (en) | Method and device for comminuting ore | |
WO1995017293A1 (en) | Device for processing thermoplastic materials | |
DE1502243A1 (en) | Screw press | |
EP1434679B1 (en) | Ring extruder comprising partially capped transport elements in the feeding region | |
DE2629509C3 (en) | Method and device for the fine comminution of inelastic materials | |
DE2432860A1 (en) | Continuous mixer for dispersing matls. in liqs. - is fed by non-clogging premixer for mixt. components | |
EP0610573A2 (en) | Grinding method and corresponding plant | |
DD278092A1 (en) | TWIN SCREW EXTRUDER REACTION | |
DE10156735A1 (en) | Processing particles from foundry waste with a metal content, by converting into strip plate at high temperatures in roller press, to be broken down into granules | |
DE2251607A1 (en) | BULK GOODS CONVEYOR DEVICE | |
AT507972B1 (en) | DEVICE FOR PROCESSING MATERIAL BY MIXTURE AND / OR PLASTIFICATION | |
EP0648539B1 (en) | Closed circuit grinding plant | |
DE3416009A1 (en) | Machine for the comminution of maize, CCM or moist grain and process for the use of the machine | |
DE4313149A1 (en) | Process and apparatus for grinding and intensive mixing of bulk goods and/or liquids | |
EP0036985B1 (en) | Apparatus for producing a mixture from at least one compressible particulate solid and at least a liquid component | |
DE102023106787B3 (en) | Plant and process for the production of fertilizer granules | |
DE2827544A1 (en) | Disintegrator for used tyres - has twin counter-rotating shafts which carry cutting discs meeting in pairs with tapered separators | |
DE2155855C3 (en) | Screw press with degassing zone | |
DE1112877B (en) | Centrifugal mills for feed, grain, legumes, pre-broken oil cakes and similar grainy goods | |
DE2237721A1 (en) | Screw press - with polygon cross-section mixing zone and angled faces |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RPI | Change in the person, name or address of the patentee (searches according to art. 11 and 12 extension act) | ||
VZ | Disclaimer of patent (art. 11 and 12 extension act) |