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DE2301906C3 - Mixing or kneading machine - Google Patents

Mixing or kneading machine

Info

Publication number
DE2301906C3
DE2301906C3 DE2301906A DE2301906A DE2301906C3 DE 2301906 C3 DE2301906 C3 DE 2301906C3 DE 2301906 A DE2301906 A DE 2301906A DE 2301906 A DE2301906 A DE 2301906A DE 2301906 C3 DE2301906 C3 DE 2301906C3
Authority
DE
Germany
Prior art keywords
housing
chamber
mixing
kneading machine
cross
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
DE2301906A
Other languages
German (de)
Other versions
DE2301906A1 (en
DE2301906B2 (en
Inventor
Bernard A. Saginaw Mich. Loomans (V.St.A.)
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.)
Baker Perkins Inc
Original Assignee
Baker Perkins Inc
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 Baker Perkins Inc filed Critical Baker Perkins Inc
Priority to DE2301906A priority Critical patent/DE2301906C3/en
Publication of DE2301906A1 publication Critical patent/DE2301906A1/en
Publication of DE2301906B2 publication Critical patent/DE2301906B2/en
Application granted granted Critical
Publication of DE2301906C3 publication Critical patent/DE2301906C3/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
    • 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
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
    • B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
    • B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
    • 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
    • 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
    • B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • B29B7/489—Screws
    • 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
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/84—Venting or degassing ; Removing liquids, e.g. by evaporating components
    • B29B7/845—Venting, degassing or removing evaporated components in devices with rotary stirrers
    • 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
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/86—Component parts, details or accessories; Auxiliary operations for working at sub- or superatmospheric pressure
    • 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
    • B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
    • 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
    • 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
    • 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

Landscapes

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

Description

4545

Die Erfindung betrifft eine Misch- und Knetmaschine mit einem im Bereich seiner Enden einen Einlaß und Auslaß aufweisenden Gehäuse, in dem mindestens eine drehbare, mit Knet- und Fördergliedern versehene Welle angeordnet ist und mit einer zwischen Ein- und Auslaß angeordneten, das Gehäuse radial durchsetzenden Entlüftungsöffnung, wobei von der Welle wenigstens ein bis zur Einmündung der Entlüftungsöffnung in den Gehäuseinnenraum reichendes, zum Auslaß förderwirksames Element vorsteht. The invention relates to a mixing and kneading machine with a one in the region of its ends Inlet and outlet having housing in which at least one rotatable, with kneading and conveying members provided shaft is arranged and arranged with a between inlet and outlet, the housing radially penetrating ventilation opening, with at least one of the shaft up to the confluence of the Ventilation opening into the interior of the housing, protruding element effective for delivery to the outlet.

Eine derartige Misch- und Knetmaschine ist beispielsweise aus der US-PS 3 501 807 bekannt. Die Entlüftungsöffnung dient dazu, die beim Verarbeiten der zu mischenden Materialien frei werdenden Gase nach außen abzuleiten. Dabei besteht jedoch die Neigung, daß ein Teil des in dem Mischer zu verarbeitenden Materials die Entlüftungsöffnung verstopft oder sogar durch diese Entlüftungsöffnung nach außen und in das sich anschließende Entlüftungssystem tritt.Such a mixing and kneading machine is known, for example, from US Pat. No. 3,501,807. the The ventilation opening serves to control the gases that are released when the materials to be mixed are processed derive to the outside. However, there is a tendency that some of the to be processed in the mixer Material clogs the vent opening or even outwards through this vent opening and enters the adjoining ventilation system.

Aufgabe der Erfindung ist es, den Entlüftungsbereich bei einer Misch- und Knetmaschine so auszubilden, daß die Entlüftungsöffnung von zu verarbeitendem Material freigehalten wird.The object of the invention is to design the ventilation area in a mixing and kneading machine in such a way that that the vent opening is kept free from the material to be processed.

Diese Aufgabe wird bei einer Misch- und Knetmaschine der eingangs beschriebenen Art gemäß der Erfindung dadurch gelöst, daß im Gehäuse und koaxial zu dessen Achse eine ringförmige Kammer vorgesehen, ist, an die sich auslaßseitig axial der freie Gehäusequerschnitt anschließt und in die die Entlüftungsöffnung einmündet, wobei das von der Welle vorstehende Element zackenförmig ausgebildet ist und sich axial in die Kammer hinein erstreckt.This task is in a mixing and kneading machine of the type described in accordance with the Invention achieved in that an annular chamber is provided in the housing and coaxially to its axis, is, to which the free housing cross-section adjoins axially on the outlet side and into which the vent opening opens, wherein the protruding element from the shaft is formed like a jagged shape and extends axially into the chamber.

Das in die vor der Entlüftungsöffnung angeordnete ringförmige Kammer eindringende Material wird auf diese Weise stets in den Gehäuseinnenraum zurückgefördert., wodurch ein Eindringen von Material in die Entlüftungsöffnung selbst verhindert wird.The material penetrating into the annular chamber located in front of the vent opening becomes open in this way always fed back into the interior of the housing. As a result, material can penetrate into the vent itself is prevented.

Die Erfindung wird nachfolgend an Hand der Zeichnung durch ein Ausführungsbeispiel näher erläutert. Hs zeigtThe invention is explained in more detail below with reference to the drawing by means of an exemplary embodiment. Hs shows

Fig. 1 eine teilweise geschnitten dargestellte Seitenansicht einer Misch- und Knetmaschine,Fig. 1 is a partially sectioned side view a mixing and kneading machine,

F i g. 2 einen vergrößerten Querschnitt entlang der Linie 2-2 in F i g. 1.F i g. Figure 2 is an enlarged cross-section taken along line 2-2 in Figure 2. 1.

F i g. 3 eine vergrößerte perspektiviscne Darstellung einer Lntlüftungsöffnungsplatte undF i g. 3 an enlarged perspective illustration a vent plate and

F i g. 4 eine vergrößerte perspektivische Darstellung des rückwärtigen Endes eines Wellenabschnittes mit nach hinten hervorstehenden schraubenförmigen Förderzacken.F i g. 4 is an enlarged perspective illustration of the rear end of a shaft section with backward protruding helical conveyor prongs.

In Fig. 1 ist ein Gehäuse 10 gezeigt mit einem eine erste Stufe bildenden Gehäuseabschnitt 11 und einem eine zweite Stufe bildenden Gehäuseabschnitt 12, die durch eine dazwischengeschobene Öffnungsplatte 13 getrennt werden. Das Gehäuse 10 kann in geeigneter Weise von einem Rahmen F getragen werden, der eine Grundplatte 10 a und Füße 10 b aufweist. 1 shows a housing 10 with a housing section 11 forming a first stage and a housing section 12 forming a second stage, which are separated by an opening plate 13 pushed in between. The housing 10 can be carried in a suitable manner by a frame F which has a base plate 10 a and feet 10 b .

Der erste Gehäuseabschnitt 11, der einen seitlichen Einlaß 14 aufweist, ist mit einer Hülse 15 versehen zur Bildung eines ringförmigen Zwischenraumes 16, der den Gehäuseabschnitt umgibt und durch den beispielsweise eine Heizflüssigkeit kontinuierlich zirkulieren kann zur Erhitzung des durch den Einlaß 14 zugeführten Materials auf die für das Mischen oder Kneten geeignete Temperatur. Das Gehäuse 10 bildet eine Misch- und Knetkammer 17, die die Form einer Acht im Querschnitt besitzt und in der ein Paar in axialer Richtung paralleler Wellen 18 und 19 angeordnet und in bekannter Weise in derselben Drehrichtung und mit derselben Drehzahl antreibbar sind. An den Wellen 18 und 19 sind am Einlaßende des Kneters weiterführende Schneckenabschnitte 20 und 21 vorgesehen, die das Material aus dem Einlaß 14 aufnehmen und es zu einer Reihe von Rührspateln 22 und 23 auf den Wellen 18 und 19 führen. Die Rührspateln 22 und 23 sind auf ihren entsprechenden Wellen in zusammengehörigen Paaren angeordnet.The first housing section 11, which has a lateral inlet 14, is provided with a sleeve 15 for Formation of an annular gap 16 which surrounds the housing section and through which, for example a heating fluid can continuously circulate to heat the through the inlet 14 fed material to the temperature suitable for mixing or kneading. The housing 10 forms a mixing and kneading chamber 17 which has the shape of a figure eight in cross section and in which a A pair of axially parallel shafts 18 and 19 arranged in a known manner in the same Direction of rotation and can be driven at the same speed. On shafts 18 and 19 are at the inlet end of the kneader further screw sections 20 and 21 are provided, which remove the material from the inlet 14 and move it to a series of spatulas 22 and 23 on shafts 18 and 19. the Mixing blades 22 and 23 are arranged in matching pairs on their respective shafts.

Das stromabwärts gerichtete Ende der Knetkammer 17 ist offen, und der Gehäuseabschnitt 11 ist mit einem Flansch 10 d versehen, so daß die Öffnungsplatte 13 geeignet daran befestigt werden kann. F i g. 3 zeigt speziell die Öffnungsplatte 13, die einen stromaufwärts gerichteten Wandteil 24 besitzt, der ein Paar hervorstehende Querschnittsverengungen 25 trägt, die sich von der Knetkammer 17 nach vorn erstrecken. Es können hier nicht gezeigte öffnungsgrößeneinstellringe auf den Wellen 18 und 19 vorgesehen sein zurThe downstream end of the kneading chamber 17 is open, and the housing portion 11 is provided with a flange 10 d so that the orifice plate 13 can be suitably attached thereto. F i g. 3 specifically shows the orifice plate 13 having an upstream wall portion 24 carrying a pair of protruding cross-sectional constrictions 25 extending forwardly from the kneading chamber 17. Opening size setting rings (not shown here) can be provided on the shafts 18 and 19 for

Steuerung der abzugebenden Materialmenge. Die Querschnittsverengungen 25 we'den von einer achterförmigen Gas sammelnden Kammer 26 umgeben, die in die Vorderfläche der Platte 13 geschnitten ist und «ile zu einer sich radial nach außen erstreckenden Entlüftungsöffnung 27 durch den Oberteil der Platte 13 führt. Wie bereits ausgeführt wurde, kann die Endüftungsörfnung 27 verbunden werden mit einem Absaugrohr, welches von dem Kneter zu einem geeigneten Absauggerät führen kann. Der bereits ge- ίο rannte Gehäuseabschnitt 12 ist zur Schaffung eines vergrößerten achterförmigen Kammerteils 28 von der-Selben Größe wie die Kammer 26 in Platte 13 ausgebildet, wobei der Kammerteil 28 stromabwärts kleiner wird, wie es bei 29 gezeigt wird, und geht über in einen achterförmigen Kammerteil 30, dessen Form ilen Schneckenabschnitten 31 und 32 entspricht, die auf den Wellen 18 und 19 am Ausgangsendu des Kneters befestigt sind. Die Schneckenabschnitte 31 und 32 sind so geformt, daß sie kontinuierlich aneinander und an den Wänden des Kammerteiles 30 entlangstreifen. Sie besitzen wendeiförmige Stege 31' und 32', die an ihren stromaufwärts gerichteten Enden bei 31 α und 32a allmählich radial vergrößert sind, so daß sie in die Kammerteile 28 und 29 hineinreichen. Axial stromaufwärts gerichtet sind von jedem Abschnitt 31 und 32 hervorstehend zusammenwirkende aneinander streifende Paare von wendeiförmigen Zacken 33 und 34 an dem Schneckenabschnitt 31 und Zacken 35 und 36 an dem Schneckenabschnitt 32 vorgesehen. Zur Klarheit der Zeichnung sind die verschiedenen Oberflächen nicht im Eingriff gezeigt, es ist aber so zu verstehen, daß die wendeiförmigen Zacken 33 bis 36 kontinuierlich sowohl an den radialen inneren und äußeren peripheren Oberflächen der Kammer 26 entlangstreifen als auch an dem Wandteil 24 und den radialen Vorderwänden 25fl der beiden Querschnittsverengungen 25. In gleicher Weise streifen die Schneckenabschnitte bei 31a und 32 a an den Kammerteilen 28 und 29 entlang.Control of the amount of material to be dispensed. The cross-sectional constrictions 25 are surrounded by an eight-shaped gas-collecting chamber 26 which is cut into the front surface of the plate 13 and leads to a vent opening 27 extending radially outward through the upper part of the plate 13. As has already been stated, the ventilation opening 27 can be connected to a suction pipe which can lead from the kneader to a suitable suction device. The already mentioned housing section 12 is designed to create an enlarged figure-eight-shaped chamber part 28 of the same size as the chamber 26 in plate 13, the chamber part 28 becoming smaller downstream, as shown at 29, and merging into one Eight-shaped chamber part 30, the shape of which corresponds to ilen screw sections 31 and 32, which are attached to the shafts 18 and 19 at the output end of the kneader. The screw sections 31 and 32 are shaped in such a way that they continuously strip one another and along the walls of the chamber part 30. They have helical webs 31 'and 32', α directed at their upstream ends at 31 and are gradually increased radially 32a so as to extend into the chamber portions 28 and 29th In an axially upstream direction from each section 31 and 32, cooperating mutually grazing pairs of helical tines 33 and 34 are provided on the screw section 31 and tines 35 and 36 on the screw section 32. For clarity of the drawing, the various surfaces are not shown engaged, but it should be understood that the helical prongs 33-36 continuously graze both the radially inner and outer peripheral surfaces of the chamber 26 and the wall portion 24 and the radial ones Front walls 25fl of the two cross-sectional constrictions 25. In the same way, the screw sections at 31a and 32a brush along the chamber parts 28 and 29.

Am stromabwärts gerichteten Ende des Kneters ist ein Auslaß 37 mit einer axialen AuslaßöfTnung 38 vorgesehen, aus der das verarbeitete Material herausgepreßt werden kann. Die Teile 20, 21, 22, 23, 31 und 32 können auf den Wellen 18 und 19 festgekeilt oder aus einem Stüch. mit denselben gebildet werden. Der Gehäuseabschnitt 12 ist vorzugsweise auch mit Flanschen 12 a und 12 b versehen, um ein Befestigen der Platte 13 und des Auslasses 37 zu erleichtern.At the downstream end of the kneader an outlet 37 is provided with an axial outlet opening 38 from which the processed material can be pressed out. The parts 20, 21, 22, 23, 31 and 32 can be wedged onto the shafts 18 and 19 or made from a piece. be formed with the same. The housing section 12 is preferably also provided with flanges 12 a and 12 b in order to facilitate fastening of the plate 13 and the outlet 37.

Im weiteren wird der Betrieb des Kneters beschrieben. Das zu mischende bzw. zu knetende Material wird kontinuierlich über den Einlaß 14 zugeführt und tritt nach der richtigen Mischung durch die Ausgangsöffnung 38 aus. Der Hauptteil des vorzunehmenden Mischens und Knetens wird in der ersten Stufe im Gehäuseabschnitt 11 ausgeführt, und am stromabwärts gerichteten Ende des Abschnittes 11 wird das Material durch die Querschnittsverengungen 25 in die Kammerteile 28 und 29 gedrückt. Das aus den Querschnittsverengungen 25 austretende und in die Kammerteile 28 und 29 eintretende Material wird an einer Bewegung in die Entlüftungsöffnung 27 gehindert, da es durch die Zacken 33 bis 36 wieder nach vorn gebracht wird zum Kammerteil 30 des Gehäuses. Aus dein Material frei gewordene gasförmige Bestandteile können frei durch die Entlüftungsöffnung 27 austreten. Die Zacken 33 und 34, die den in F i g. 2 gezeigten, abgekürzten, rührspatelförmigem Querschnitt haben, streifen kontinuierlich an den Zacken 35 und 36 entlang, die denselben Querschnitt haben und die im Verhältnis zu den Zacken 33 und 34 um 90° gegen diese versetzt sind.The operation of the kneader is described below. The material to be mixed or kneaded is fed continuously via inlet 14 and, after properly mixed, passes through the exit port 38 off. Most of the mixing and kneading that needs to be done is done in the first stage Housing section 11 carried out, and at the downstream end of the section 11 is the Material is pressed through the cross-sectional constrictions 25 into the chamber parts 28 and 29. That from the cross-sectional constrictions 25 exiting and entering the chamber parts 28 and 29 material is at a Movement into the vent 27 is prevented because it is brought forward again by the prongs 33 to 36 becomes chamber part 30 of the housing. Gaseous components released from your material can exit freely through the vent opening 27. Prongs 33 and 34, which correspond to the ones shown in FIG. 2 shown, have abbreviated, spatula-shaped cross-section, continuously rub against the prongs 35 and 36 along, which have the same cross-section and which are opposite in relation to the prongs 33 and 34 by 90 ° these are offset.

Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings

Claims (4)

Patentansprüche:Patent claims: 1. Misch- und Knetmaschine mit einem im Bereich seiner Enden einen Einlaß und Auslaß auf- S weisenden Gehäuse, in dem mindestens eine drehbare, mit Knet- und Fördergliedern versehene Welle angeordnet ist und mit einer zwischen Ein- und Auslaß angeordneten, das Gehäuse radial durchsetzenden Entlüftungsöffnung, wobei von der Welle wenigstens ein bis zur Einmündung der Entlüftungsöffnung in den Gehäuseinnenraum reichendes, zum Auslaß förderwirksames Element vorsteht, dadurch gekennzeichnet, daß im Gehäuse und axial zu dessen Achse eine ringförmige Kammer (26) vorgesehen ist, an die sich auslaßseitig axial der freie Gehäusequerschnitt anschließt und in die die Entlüftungsöffnung (27) einmündet, wobei das von der Welle vorstehende Element (33, 34 bzw. 35, 36) zackenförmig aus- ao gebildet ist und sich axial in die Kammer (26) hinein erstreckt.1. Mixing and kneading machine with an inlet and outlet in the region of its ends facing housing in which at least one rotatable, provided with kneading and conveying members Shaft is arranged and arranged between the inlet and outlet, the housing radially penetrating vent opening, with at least one of the shaft up to the confluence of the Ventilation opening in the interior of the housing reaching, to the outlet effective element protrudes, characterized in that an annular one in the housing and axially to its axis Chamber (26) is provided, to which the free housing cross-section adjoins axially on the outlet side and into which the vent opening (27) opens, the protruding from the shaft Element (33, 34 or 35, 36) jagged out ao is formed and extends axially into the chamber (26). 2. Misch- und Knetmaschine nach Anspruch 1, dadurch gekennzeichnet, daß im Bereich der Entlüftungsöffnung (27) eine Querschnittsverengung2. Mixing and kneading machine according to claim 1, characterized in that in the region of the vent opening (27) a cross-sectional constriction (25) des Gehäuses vorgesehen und die ringförmige Kammer (26) in radialem Abstand von der Querschnittsverengung (25) angeordnet ist.(25) of the housing and the annular chamber (26) at a radial distance from the cross-sectional constriction (25) is arranged. 3. Misch- und Knetmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der freie Gehäusequerschnitt in dem sich an die Kammer3. Mixing and kneading machine according to claim 1 or 2, characterized in that the free Housing cross-section in which to the chamber (26) anschließenden Teil radial nach außen erweitert ist.(26) adjoining part expanded radially outward is. 4. Misch- und Knetmaschine nach einem der Ansprüche 1 bis 3, bei der in dem Gehäuse ein Wellenpaar vorgesehen ist, dadurch gekennzeichnet, daß jede Welle (18 bzw. 19) gleichsinnig drehbar und mit einem Paar zackenförmiger Elemente (33, 34 bzw. 35, 36) ausgerüstet ist, deren Zacken die Kammer (26) und sich gegenseitig abstreifend winkelmäßig gegeneinander versetzt sind.4. Mixing and kneading machine according to one of claims 1 to 3, wherein a in the housing A pair of shafts is provided, characterized in that each shaft (18 or 19) is in the same direction rotatable and equipped with a pair of prong-shaped elements (33, 34 and 35, 36) whose The jagged chamber (26) and mutually stripping each other are angularly offset from one another.
DE2301906A 1973-01-16 1973-01-16 Mixing or kneading machine Expired DE2301906C3 (en)

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Application Number Priority Date Filing Date Title
DE2301906A DE2301906C3 (en) 1973-01-16 1973-01-16 Mixing or kneading machine

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Application Number Priority Date Filing Date Title
DE2301906A DE2301906C3 (en) 1973-01-16 1973-01-16 Mixing or kneading machine

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DE2301906A1 DE2301906A1 (en) 1974-08-01
DE2301906B2 DE2301906B2 (en) 1974-11-07
DE2301906C3 true DE2301906C3 (en) 1975-07-03

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Publication number Priority date Publication date Assignee Title
JP4746014B2 (en) 2007-07-09 2011-08-10 株式会社日本製鋼所 Melt-kneading devolatilizing extruder

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DE2301906A1 (en) 1974-08-01
DE2301906B2 (en) 1974-11-07

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Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee