EP0055872B1 - Mixer for compositions of plastics material - Google Patents

Mixer for compositions of plastics material Download PDF

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Publication number
EP0055872B1
EP0055872B1 EP81110858A EP81110858A EP0055872B1 EP 0055872 B1 EP0055872 B1 EP 0055872B1 EP 81110858 A EP81110858 A EP 81110858A EP 81110858 A EP81110858 A EP 81110858A EP 0055872 B1 EP0055872 B1 EP 0055872B1
Authority
EP
European Patent Office
Prior art keywords
mixing
cylinder
hollow shaft
mixer
mixing vessel
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
EP81110858A
Other languages
German (de)
French (fr)
Other versions
EP0055872A3 (en
EP0055872A2 (en
Inventor
Friedrich Walter Dr. Herfeld
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.)
Successione Legittima ute Herfeld
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0055872A2 publication Critical patent/EP0055872A2/en
Publication of EP0055872A3 publication Critical patent/EP0055872A3/en
Application granted granted Critical
Publication of EP0055872B1 publication Critical patent/EP0055872B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10—Maintenance of mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32—Driving arrangements
    • B01F35/322—Construction of driving shafts

Definitions

  • the invention relates to a mixer for plastic preparations with a cylindrical mixing container with a vertical axis, an agitator shaft arranged on the axis of the mixing container, which carries mixing blades and extends through the bottom of the container, and with a drive device for the agitator shaft below the bottom of the container.
  • the object of the invention is such a design of a mixer of the type mentioned that the inner walls of the mixing container and the mixing tool can be easily cleaned.
  • a mixer according to the first part of claim 1 is known from FR-A-2107186.
  • the agitator shaft is in this case formed by an outer hollow shaft part which is rotatably but non-displaceably mounted in the longitudinal direction and an inner hollow shaft part which is non-rotatably connected to it but is displaceably mounted in the longitudinal direction.
  • a cylinder-piston arrangement which can be actuated by pressure medium is provided in the known mixer, the cylinder of which is arranged in a fixed manner and the piston rod acting on the inner hollow shaft part of the agitator shaft, the agitator shaft with the mixing blades carried by it for the purpose of cleaning the mixing blades and Inner wall of the mixing container can be raised.
  • the invention enables the mixing tools to be completely lifted out of the interior of the mixing container, since the length of the hollow shaft is dimensioned accordingly. On the one hand, this allows the interior of the mixing container to be cleaned completely unhindered. On the other hand, the mixing tools can also be cleaned from both the top and the bottom.
  • the fact that the cylinder chamber extends into the part of the agitator shaft which extends through the bottom wall and that the length of the piston rod is correspondingly greater than the height of the mixing container means that a large lifting height is available for lifting the mixing tools, so that the mixing tools are completely out g the interior of the mixing vessel out e-taken can be.
  • the drawing shows a double-walled mixing container 1 in the form of an upright cylinder.
  • the mixing container upper edge 2 is closed by a lid 3, for which an actuating device 4 is provided, for. B. as a pressure fluid actuator.
  • an agitator shaft 5 which extends through the bottom wall 6 in a conventional manner and is supported in a bearing receptacle 7 below the bottom wall.
  • a drive hub 8 receives a drive wheel which is driven by a motor via a gear or a belt drive.
  • the agitator shaft 5 comprises a hollow shaft 9, which enables the mixing tool to be removed completely.
  • the hollow shaft 9 preferably extends approximately to the height of the upper edge of the mixing container 2.
  • a piston rod 10 is guided inside the hollow shaft 9.
  • a seal 11 is provided, so that this arrangement forms a pressure medium unit with a cylinder chamber 15.
  • a gland-like rotary connection 12 is arranged, the pipe socket 13 via a control device, for.
  • a valve can be connected to a pressure medium source, not shown. Via the rotary connection 12, a connecting line 14 leads to the cylinder chamber 15 within the hollow shaft 9. This embodiment enables the mixing tools to be raised particularly advantageously. This is because the cylinder chamber and the piston rod are used as a pressure medium unit.
  • the piston rod 10 carries at its upper end a sleeve 16, which consists of individual segments 17, 18, 19, 20 in the manner shown. These segments have a central passage which overlaps the hollow shaft 9. The segments are connected to one another and partly also serve as hub parts for mixing blades 21, 22, 23, which are designed in a manner known per se. At the top of the sleeve 16, a cover scraper 24 is also provided.
  • the illustration of the figure shows the working position of the mixer in solid lines.
  • the lid 3 is closed and the sleeve 16 with the mixing blades 21, 22, 23 and the lid scraper 24 is located in the interior of the mixing container 1.
  • the mixing container can be charged via openings in the lid 3, not shown in detail.
  • the discharge device is also not shown.
  • the mixing process takes place in a known manner by rotating the agitator shaft 5.
  • the lid 3 When the mixing container is to be cleaned, the lid 3 is raised and pivoted into the open position 3 'shown in dash-dotted lines. About the line connector 13 pressure medium, for. B. compressed air, so that the piston rod 10 is extended. The piston rod 10 with the sleeve 16 can be shown in the dash-dotted lines Position 10 'or 16' are raised. As a result, the mixing tools are completely lifted out of the interior of the mixing container 1. As a result, both the mixing tools and the interior of the mixing container are freely accessible, so that complete and comprehensive cleaning is possible. Mixing blades can be brought into the cleaning position in a simple manner by introducing pressure medium. Mechanical connections cannot be broken. The invention thus brings about a considerable improvement for the cleaning processes on a mixer.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Description

Die Erfindung bezieht sich auf einen Mischer für Kunststoffzubereitungen mit einem zylindrischen Mischbehälter mit vertikaler Achse, einer auf der Achse des Mischbehälters angeordneten Rührwerkwelle, die Mischflügel trägt und durch den Behälterboden hindurchreicht, sowie mit einer Antriebsvorrichtung für die Rührwerkwelle unterhalb des Behälterbodens.The invention relates to a mixer for plastic preparations with a cylindrical mixing container with a vertical axis, an agitator shaft arranged on the axis of the mixing container, which carries mixing blades and extends through the bottom of the container, and with a drive device for the agitator shaft below the bottom of the container.

Bei einem Mischer dieser Art ergeben sich für die Reinigung insbesondere deshalb Schwierigkeiten, weil die Mischflügel Teile der Behälterwandung abdecken und auf der Unterseite schwer zugängliche Hohlräume und Hinterschneidungen aufweisen.Difficulties arise for cleaning in a mixer of this type in particular because the mixing blades cover parts of the container wall and have cavities and undercuts which are difficult to access on the underside.

Aufgabe der Erfindung ist eine solche Ausbildung eines Mischers der genannten Art, daß die Innenwände des Mischbehälters und das Mischwerkzeug leicht gereinigt werden können.The object of the invention is such a design of a mixer of the type mentioned that the inner walls of the mixing container and the mixing tool can be easily cleaned.

Ein Mischer entsprechend dem ersten Teil des Anspruches 1 ist durch die FR-A-2107186 bekannt. Die Rührwerkwelle wird hierbei durch einen drehbar, jedoch in Längsrichtung unverschiebbar gelagerten äußeren Hohlwellenteil sowie einen hiermit drehfest verbundenen, jedoch in Längsrichtung verschiebbar gelagerten inneren Hohlwellenteil gebildet. Im Innern dieser Rührwerkwelle ist bei dem bekannten Mischer eine durch Druckmittel betätigbare ZylinderKolben-Anordnung vorgesehen, deren Zylinder feststehend angeordnet ist und durch deren auf den inneren Hohlwellenteil der Rührwerkwelle wirkende Kolbenstange die Rührwerkwelle mit den von ihr getragenen Mischflügeln zum Zwecke der Reinigung der Mischflügel und der Innenwand des Mischbehälters angehoben werden kann.A mixer according to the first part of claim 1 is known from FR-A-2107186. The agitator shaft is in this case formed by an outer hollow shaft part which is rotatably but non-displaceably mounted in the longitudinal direction and an inner hollow shaft part which is non-rotatably connected to it but is displaceably mounted in the longitudinal direction. In the interior of this agitator shaft, a cylinder-piston arrangement which can be actuated by pressure medium is provided in the known mixer, the cylinder of which is arranged in a fixed manner and the piston rod acting on the inner hollow shaft part of the agitator shaft, the agitator shaft with the mixing blades carried by it for the purpose of cleaning the mixing blades and Inner wall of the mixing container can be raised.

Die Aufgabe wird nach der Erfindung durch das kennzeichnende Merkmal des Anspruches 1 gelöst.The object is achieved according to the invention by the characterizing feature of claim 1.

Die Erfindung ermöglicht ein vollständiges Herausheben der Mischwerkzeuge aus dem Innenraum des Mischbehälters, da die Länge der Hohlwelle entsprechend bemessen ist. Damit kann einerseits der Innenraum des Mischbehälters völlig ungehindert gereinigt werden. Andererseits können auch die Mischwerkzeuge sowohl von der Oberseite als auch von der Unterseite gereinigt werden. Dadurch, daß sich die Zylinderkammer bis in den durch die Bodenwandung hindurchreichenden Teil der Rührwerkwelle erstreckt und daß entsprechend die Länge der Kolbenstange größer als die Höhe des Mischbehälters ist, steht eine große Hubhöhe für das Anheben der Mischwerkzeuge zur Verfügung, so daß die Mischwerkzeuge vollständig aus dem Innenraum des Mischbehälters herausge-nommen werden können.The invention enables the mixing tools to be completely lifted out of the interior of the mixing container, since the length of the hollow shaft is dimensioned accordingly. On the one hand, this allows the interior of the mixing container to be cleaned completely unhindered. On the other hand, the mixing tools can also be cleaned from both the top and the bottom. The fact that the cylinder chamber extends into the part of the agitator shaft which extends through the bottom wall and that the length of the piston rod is correspondingly greater than the height of the mixing container means that a large lifting height is available for lifting the mixing tools, so that the mixing tools are completely out g the interior of the mixing vessel out e-taken can be.

Eine Ausführungsform der Erfindung wird im folgenden unter Bezugnahme auf die anliegende Zeichnung erläutert, die einen Schnitt durch einen Mischer nach der Erfindung darstellt.An embodiment of the invention is explained below with reference to the accompanying drawing, which shows a section through a mixer according to the invention.

Die Zeichnung zeigt einen doppelwandigen Mischbehälter 1 in Form eines aufrechtstehenden Zylinders. Der Mischbehälteroberrand 2 ist durch einen Deckel 3 abgeschlossen, für den eine Betätigungsvorrichtung 4 vorgesehen ist, z. B. als Druckmittelbetätigungsvorrichtung.The drawing shows a double-walled mixing container 1 in the form of an upright cylinder. The mixing container upper edge 2 is closed by a lid 3, for which an actuating device 4 is provided, for. B. as a pressure fluid actuator.

Innerhalb des Mischbehälters ist eine Rührwerkwelle 5 vorgesehen, die in üblicher Weise durch die Bodenwandung 6 hindurchreicht und unterhalb der Bodenwandung in einer Lageraufnahme 7 gelagert ist. Eine Antriebsnabe 8 nimmt ein Antriebsrad auf, das über ein Getriebe oder einen Riemenantrieb von einem Motor angetrieben wird. Die Rührwerkwelle 5 umfaßt eine Hohlwelle 9, die ein vollständiges Herausnehmen des Mischwerkzeugs ermöglicht. Vorzugsweise reicht die Hohlwelle 9 etwa bis zur Höhe des Mischbehälteroberrandes 2. Innerhalb der Hohlwelle 9 ist eine Kolbenstange 10. geführt. Am Oberende der Hohlwelle 9 ist eine Abdichtung 11 vorgesehen, so daß diese Anordnung eine Druckmitteleinheit mit einer Zylinderkammer 15 bildet. Am Unterende der Hohlwelle 9 ist eine stopfbuchsenartige Drehverbindung 12 angeordnet, deren Leitungsstutzen 13 über eine Steuervorrichtung, z. B. ein Ventil, mit einer nicht dargestellten Druckmittelquelle verbindbar ist. Über die Drehverbindung 12 führt eine Verbindungsleitung 14 zu der Zylinderkammer 15 innerhalb der Hohlwelle 9. Diese Ausführungsform ermöglicht eine besonders günstige Anhebung der Mischwerkzeuge. Es wird nämlich die Zylinderkammer und die Kolbenstange als Druckmitteleinheit ausgenutzt.Provided in the mixing container is an agitator shaft 5 which extends through the bottom wall 6 in a conventional manner and is supported in a bearing receptacle 7 below the bottom wall. A drive hub 8 receives a drive wheel which is driven by a motor via a gear or a belt drive. The agitator shaft 5 comprises a hollow shaft 9, which enables the mixing tool to be removed completely. The hollow shaft 9 preferably extends approximately to the height of the upper edge of the mixing container 2. A piston rod 10 is guided inside the hollow shaft 9. At the top of the hollow shaft 9, a seal 11 is provided, so that this arrangement forms a pressure medium unit with a cylinder chamber 15. At the lower end of the hollow shaft 9, a gland-like rotary connection 12 is arranged, the pipe socket 13 via a control device, for. B. a valve, can be connected to a pressure medium source, not shown. Via the rotary connection 12, a connecting line 14 leads to the cylinder chamber 15 within the hollow shaft 9. This embodiment enables the mixing tools to be raised particularly advantageously. This is because the cylinder chamber and the piston rod are used as a pressure medium unit.

Die Kolbenstange 10 trägt an ihrem Oberende eine Hülse 16, die in der dargestellten Weise aus einzelnen Segmenten 17,18,19, 20 besteht. Diese Segmente besitzen einen zentrischen Durchgang, der jeweils die Hohlwelle 9 übergreift. Die Segmente sind miteinander verbunden und dienen zum Teil auch als Nabenteile für Mischflügel 21, 22, 23, die in an sich bekannter Weise ausgebildet sind. Am Oberende der Hülse 16 ist auch ein Deckelräumer 24 vorgesehen.The piston rod 10 carries at its upper end a sleeve 16, which consists of individual segments 17, 18, 19, 20 in the manner shown. These segments have a central passage which overlaps the hollow shaft 9. The segments are connected to one another and partly also serve as hub parts for mixing blades 21, 22, 23, which are designed in a manner known per se. At the top of the sleeve 16, a cover scraper 24 is also provided.

Die Darstellung der Figur zeigt in ausgezogenen Linien die Arbeitsstellung des Mischers. Der Deckel 3 ist geschlossen und die Hülse 16 mit den Mischflügeln 21, 22, 23 sowie dem Deckelräumer 24 befindet sich im Innenraum des Mischbehälters 1. Eine Beschickung des Mischbehälters kann über im einzelnen nicht dargestellte Öffnungen des Deckels 3 erfolgen. Die Austragvorrichtung ist ebenfalls nicht dargestellt. Der Mischvorgang erfolgt in bekannter Weise unter Drehung der Rührwerkwelle 5.The illustration of the figure shows the working position of the mixer in solid lines. The lid 3 is closed and the sleeve 16 with the mixing blades 21, 22, 23 and the lid scraper 24 is located in the interior of the mixing container 1. The mixing container can be charged via openings in the lid 3, not shown in detail. The discharge device is also not shown. The mixing process takes place in a known manner by rotating the agitator shaft 5.

Wenn der Mischbehälter gereinigt werden soll, wird der Deckel 3 angehoben und in die in strichpunktierten Linien dargestellte Öffnungsstellung 3' verschwenkt. Über den Leitungsstutzen 13 wird Druckmittel, z. B. Druckluft, eingeleitet, so daß die Kolbenstange 10 ausgefahren wird. Die Kolbenstange 10 mit der Hülse 16 kann in die in strichpunktierten Linien eingezeichnete Stellung 10' bzw. 16' angehoben werden. Dadurch werden die Mischwerkzeuge vollständig aus dem Innenraum des Mischbehälters 1 herausgehoben. Infolgedessen sind sowohl die Mischwerkzeuge als auch der Innenraum des Mischbehälters ungehindert zugänglich, so daß eine vollständige und umfassende Reinigung möglich ist. Mischflügel können in einfacher Weise durch Einleiten von Druckmittel in Reinigungsstellung gebracht werden. Mechanische Verbindungen sind nicht zu lösen. Damit bringt die Erfindung eine erhebliche Verbesserung für die Reinigungsvorgänge an einem Mischer.When the mixing container is to be cleaned, the lid 3 is raised and pivoted into the open position 3 'shown in dash-dotted lines. About the line connector 13 pressure medium, for. B. compressed air, so that the piston rod 10 is extended. The piston rod 10 with the sleeve 16 can be shown in the dash-dotted lines Position 10 'or 16' are raised. As a result, the mixing tools are completely lifted out of the interior of the mixing container 1. As a result, both the mixing tools and the interior of the mixing container are freely accessible, so that complete and comprehensive cleaning is possible. Mixing blades can be brought into the cleaning position in a simple manner by introducing pressure medium. Mechanical connections cannot be broken. The invention thus brings about a considerable improvement for the cleaning processes on a mixer.

Claims (2)

1. Mixer for compositions of plastics material, containing
a) a cylindrical mixing vessel (1) with a vertical axis,
b) a stirrer shaft (5) which is arranged coaxially with the axis of the mixing vessel (1), passes through the base (6) of the mixing vessel (1) and bears the mixing blades (21, 22, 23),
c) drive means arranged below the base (6) of the mixing vessel (1) for rotary driving of the stirrer shaft (5),
d) in which the part (16) of the stirrer shaft (5) bearing the mixing blades can be displaced in the vertical direction by means of a cylinder-piston arrangement (9, 10) which is actuated by a pressure medium,

characterised in that
e) the stirrer shaft (5) is formed by the following parts :
e1) the cylinder of the cylinder-piston arrangement (9, 10), this cylinder being constructed as a rotatable hollow shaft (9) and being mounted so that it cannot be displaced in the vertical direction,
e2) the piston rod (10) of the cylinder-piston arrangement (9, 10), this piston rod being rotatable with the hollow shaft (9) and displaceable relative to the latter in the vertical direction,
e3) and the part which is constructed as a bushing (16), bears the mixing blades (21, 22, 23), is fixed to the upper end of the piston rod (10) and engages over the hollow shaft (9).
2. Mixer as claimed in claim 1, characterised in that the hollow shaft (9) extends to the height of the upper edge (2) of the mixing vessel (1).
EP81110858A 1981-01-07 1981-12-31 Mixer for compositions of plastics material Expired EP0055872B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8100137U 1981-01-07
DE19818100137U DE8100137U1 (en) 1981-01-07 1981-01-07 MIXER FOR PLASTIC PREPARATIONS

Publications (3)

Publication Number Publication Date
EP0055872A2 EP0055872A2 (en) 1982-07-14
EP0055872A3 EP0055872A3 (en) 1983-06-22
EP0055872B1 true EP0055872B1 (en) 1985-08-07

Family

ID=6723508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110858A Expired EP0055872B1 (en) 1981-01-07 1981-12-31 Mixer for compositions of plastics material

Country Status (2)

Country Link
EP (1) EP0055872B1 (en)
DE (2) DE8100137U1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3301207A1 (en) * 1983-01-15 1984-07-19 Friedrich Walter Dr. 5982 Neuenrade Herfeld MIXING DEVICE
DE3529185A1 (en) * 1985-01-25 1986-07-31 Herfeld, Friedrich Walter, Dr., 5982 Neuenrade MIXER
DE3512548A1 (en) * 1985-04-06 1986-10-16 Heinz Josef Bontenackels Pulsed mixer
CN103657482A (en) * 2013-12-09 2014-03-26 淮南矿业(集团)有限责任公司 Mixing kettle device
CN108816139A (en) * 2018-06-29 2018-11-16 遵义市石佛洞牛肉干厂 Beef agitating device
DE102020100063A1 (en) * 2020-01-03 2021-07-08 Ifm Electronic Gmbh Stirring station
CN112720891B (en) * 2020-12-14 2023-03-21 九江中科鑫星新材料有限公司 Mixing equipment for preparing ultrahigh molecular polyethylene filter material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1523598A (en) * 1966-05-06 1968-05-03 Machine for the preparation and mixing of pasta
DE2049011A1 (en) * 1970-09-29 1972-03-30 Siemens Ag Mixing machine with high-speed floor agitator
DE2145900C2 (en) * 1971-09-14 1973-06-14 Fa Erwin Stelzer, 3530 Warburg Vertical shaft stirrer - with aerofoil shaped variable angle of attack peripheral hollow blades

Also Published As

Publication number Publication date
DE3171748D1 (en) 1985-09-12
DE8100137U1 (en) 1981-07-23
EP0055872A3 (en) 1983-06-22
EP0055872A2 (en) 1982-07-14

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