EP0728518A1 - Mixing and kneading device - Google Patents

Mixing and kneading device Download PDF

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Publication number
EP0728518A1
EP0728518A1 EP95118346A EP95118346A EP0728518A1 EP 0728518 A1 EP0728518 A1 EP 0728518A1 EP 95118346 A EP95118346 A EP 95118346A EP 95118346 A EP95118346 A EP 95118346A EP 0728518 A1 EP0728518 A1 EP 0728518A1
Authority
EP
European Patent Office
Prior art keywords
mixing
kneading device
housing
kneading
covers
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.)
Ceased
Application number
EP95118346A
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German (de)
French (fr)
Inventor
Adolf Rogon
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.)
Buss SMS GmbH Verfahrenstechnik
Original Assignee
Krauss Maffei 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 Krauss Maffei AG filed Critical Krauss Maffei AG
Publication of EP0728518A1 publication Critical patent/EP0728518A1/en
Ceased 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
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B01F27/707—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms the paddles co-operating, e.g. intermeshing, with elements on the receptacle wall
    • 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
    • B01F35/45—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor
    • B01F35/453—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor by moving them perpendicular to the plane of the opening

Definitions

  • the invention relates to a mixing and kneading device according to the preamble of patent claim 1.
  • a mixer kneader is known, the cylindrical housing of which is closed off by flat end walls.
  • a complex construction of the flat end walls is required.
  • stiffening ribs are welded onto the end walls in the form of a lattice work.
  • the invention is therefore based on the object of providing a mixer kneader of the type mentioned at the outset with a housing cover which, without additional stiffening measures, has the necessary stability to absorb the thermal and compressive stresses occurring in the housing and which can be heated in a simple manner.
  • the attachment of the cover by means of flange rings enables a favorable tensile stress on the welded connection of the flange ring on the housing side and the screw connection with the bearing housing flange.
  • the strains caused by short, sudden temperature changes (150 o C to 300 o C in 20 min) are not hindered.
  • the bearing housing can be directly attached or welded to the bearing housing flange, so that the attachment easily meets the safety regulations.
  • the design of the cover as a curved disc makes it possible to dispense with additional stiffening or ribbing as in the case of flat floors and simple heating. In contrast to a dished bottom with the edge pulled down towards the housing wall, the dead spaces in the floor area are also smaller.
  • the pane is curved inward, the dead space can be further minimized.
  • the curved pane can be made with a relatively small wall thickness.
  • the heating is preferably carried out by welded-on half pipes.
  • a favorable deflection of force from the bottom to the cylindrical jacket can advantageously be achieved by a relatively large inner radius of the flange ring with a corresponding design.
  • the mixer kneader is welded to a dished bottom K of a conventional type.
  • a housing jacket 1 is welded to a flange ring 2, which in turn is welded to an inwardly curved disk 3 with welded-on half-tubes 4 for heating.
  • Rotating disks 6 with kneading bars 7 and a kneading bar 7a on one side are fixedly arranged on a shaft 5.
  • a dead space 8 Between the disc 6 with the one-sided kneading bar 7a and the inside of the curved disc 3 there is a dead space 8, in which scrapers 9 rotate with the shaft 5.
  • a crusher 10 is firmly connected to the housing shell 1.
  • the kneading hooks 18 projecting into the housing are detachably connected to the housing jacket 1.
  • the shaft 5 is guided through the curved disk 3 by means of an inner ring 11 welded to the disk 3 via a seal 12 and a bearing 13 to a drive 14 with a torque support 15.
  • a bearing lantern 16 is welded to the flange ring 2 and connected to the torque arm 15 via a bearing support 17.
  • a flange ring 19 is welded to the housing jacket 1 and is releasably connected to a flange ring 20 by a screw connection.
  • the flange ring 20 is welded to a curved disc 21 and a lantern 22.
  • the flange rings 2 and 20 are equipped with inner radii 24 and 25.
  • an outwardly curved disk 23 welded to the flange ring 20 is alternatively indicated by dash-dotted lines.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)

Abstract

A mixing and kneading device, for thermal treatment of liq., pasty and/or pulverulent products opt. with supply or removal of gases and vapours, has a heated cylindrical housing (1), to the ends of which domed cover plates (21) are fixed together with one or two interposed flange rings (19,20).

Description

Die Erfindung bezieht sich auf eine Misch- und Knetvorrichtung gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a mixing and kneading device according to the preamble of patent claim 1.

Nach der Patentschrift DE 23 49 106 C3 ist ein Mischkneter bekannt, dessen zylindrisches Gehäuse durch ebene Stirnwände abgeschlossen ist. Um die im Gehäuse erzeugten Druck- und Wärmespannungen stirnseitig zu kompensieren, ist eine aufwendige Konstruktion der ebenen Stirnwände erforderlich. Hierzu werden auf die Stirnwände eine größere Anzahl von Versteifungsrippen in Form eines Gitterwerks aufgeschweißt. Für die notwendige Beheizung der Stirnwände ist dadurch kein Platz mehr für Heizrohre vorhanden, so daß die Beheizung mittels einer aufwendigen Verbundkonstruktion im Inneren der Stirnwand vorzusehen ist.According to patent specification DE 23 49 106 C3, a mixer kneader is known, the cylindrical housing of which is closed off by flat end walls. In order to compensate for the pressure and thermal stresses generated in the housing on the end face, a complex construction of the flat end walls is required. For this purpose, a larger number of stiffening ribs are welded onto the end walls in the form of a lattice work. As a result, there is no longer any space for heating pipes for the necessary heating of the end walls, so that the heating must be provided in the interior of the end wall by means of a complex composite construction.

Es sind ferner auch zylindrische Gehäuse bekannt, die stirnseitig mit sogenannten Klöpperböden mit aufgeschweißten Heizrohren versehen sind. Die relativ großen Toleranzen der Klöpperböden von + 1 % am Umfang erfordern eine aufwendige Anpaßfertigung von Gehäuse und Welle an den gegebenen Istdurchmesser der Klöpperböden. Außerdem müssen große Toträume im stirnseitigen Bereich des Gehäuses in kauf genommen werden, die von den Knetelementen nur schlecht oder gar nicht durchmischt werden können. Ferner bedingt die große Wölbung eines Klöpperbodens eine aufwendige Konstruktion der Lagerlaterne und einen großen Lagerabstand, da aufgrund von Sicherheitsvorschriften die Laterne nicht unmittelbar am Klöpperboden befestigt werden darf.There are also known cylindrical housings which are provided on the end face with so-called dished ends with welded heating tubes. The relatively large tolerances of the dished end of + 1% on the circumference require an elaborate adaptation of the housing and shaft to the given actual diameter of the dished end. In addition, large dead spaces in the front area of the housing must be taken into account, which can only be mixed poorly or not at all by the kneading elements. Furthermore, the large curvature of a clapper base requires a complex construction of the bearing lantern and a large distance between the bearings, since the lantern may not be attached directly to the dome base due to safety regulations.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Mischkneter der eingangs genannten Art mit einer Gehäuseabdeckung auszustatten, die ohne zusätzliche Versteifungsmaßnahmen die erforderliche Stabilität zur Aufnahme der im Gehäuse auftretenden Wärme- und Druckspannungen aufweist und die in einfacher Weise beheizbar ist.The invention is therefore based on the object of providing a mixer kneader of the type mentioned at the outset with a housing cover which, without additional stiffening measures, has the necessary stability to absorb the thermal and compressive stresses occurring in the housing and which can be heated in a simple manner.

Diese Aufgabe wird gemäß den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved in accordance with the features of patent claim 1.

Die Befestigung des Deckels mittels Flanschringen ermöglicht eine günstige Zugbeanspruchung der Schweißverbindung des gehäuseseitigen Flanschringes und der Verschraubung mit dem Lagergehäuseflansch. Die aufgrund von kurzzeitigen schroffen Temperaturwechseln (150o C auf 300o C in 20 min) verursachten Dehnungen werden nicht behindert. Am Lagergehäuseflansch kann das Lagergehäuse unmittelbar befestigt bzw. verschweißt werden, so daß die Befestigung in einfacher Weise den Sicherheitsbestimmungen gerecht wird.The attachment of the cover by means of flange rings enables a favorable tensile stress on the welded connection of the flange ring on the housing side and the screw connection with the bearing housing flange. The strains caused by short, sudden temperature changes (150 o C to 300 o C in 20 min) are not hindered. The bearing housing can be directly attached or welded to the bearing housing flange, so that the attachment easily meets the safety regulations.

Die Ausbildung des Deckels als gewölbte Scheibe ermöglicht den Wegfall einer zusätzlichen Versteifung bzw. Verrippung wie bei ebenen Böden und eine einfache Beheizung. Im Gegensatz zu einem Klöpperboden mit in Richtung auf die Gehäusewandung heruntergezogenem Rand sind auch die Toträume im Bodenbereich kleiner.The design of the cover as a curved disc makes it possible to dispense with additional stiffening or ribbing as in the case of flat floors and simple heating. In contrast to a dished bottom with the edge pulled down towards the housing wall, the dead spaces in the floor area are also smaller.

Bei in vorteilhafter Ausbildung der Erfindung nach innen gewölbter Scheibe kann der Totraum weiter minimiert werden. Die gewölbte Scheibe kann mit relativ geringer Wanddicke ausgeführt werden. Die Beheizung erfolgt vorzugsweise durch aufgeschweißte Halbrohre.In an advantageous embodiment of the invention, the pane is curved inward, the dead space can be further minimized. The curved pane can be made with a relatively small wall thickness. The heating is preferably carried out by welded-on half pipes.

Eine günstige Kraftumlenkung vom Boden zum zylindrischen Mantel kann vorteilhaft durch einen relativ großen Innenradius des Flanschringes bei entsprechender Gestaltung erzielt werden.A favorable deflection of force from the bottom to the cylindrical jacket can advantageously be achieved by a relatively large inner radius of the flange ring with a corresponding design.

In der Zeichnung zeigen:

Fig. 1
einen Mischkneter mit einem Klöpperboden herkömmlicher Art im Ausschnitt, sowie insbesondere
Fig. 2
den antriebsseitigen Teil einer Misch- und Knetvorrichtung und
Fig. 3
den gegenüberliegenden lagerseitigen Teil gemäß der Erfindung.
The drawing shows:
Fig. 1
a mixer kneader with a dished bottom of conventional type in the cutout, and in particular
Fig. 2
the drive-side part of a mixing and kneading device and
Fig. 3
the opposite bearing part according to the invention.

Nach Fig. 1 ist der Mischkneter mit einem Klöpperboden K herkömmlicher Art verschweißt.1, the mixer kneader is welded to a dished bottom K of a conventional type.

Nach Fig. 2 ist ein Gehäusemantel 1 mit einem Flanschring 2 verschweißt, der seinerseits mit einer nach innen gewölbten Scheibe 3 mit aufgeschweißten Halbrohren 4 für die Beheizung verschweißt ist. Auf einer Welle 5 sind mit ihr umlaufende Scheiben 6 mit Knetbarren 7 sowie ein einseitiger Knetbarren 7a fest angeordnet. Zwischen der Scheibe 6 mit dem einseitigen Knetbarren 7a und der Innenseite der gewölbten Scheibe 3 befindet sich ein Totraum 8, in dem Abstreifer 9 mit der Welle 5 umlaufen. Im Totraum 8 ist ein Brecher 10 fest mit dem Gehäusemantel 1 verbunden. Mit dem Gehäusemantel 1 sind die in das Gehäuse hineinragenden Knethaken 18 lösbar verbunden. Die Welle 5 ist durch die gewölbte Scheibe 3 mittels eines mit der Scheibe 3 verschweißten Innenrings 11 über eine Abdichtung 12 und eine Lagerung 13 zu einem Antrieb 14 mit einer Drehmomentstütze 15 hindurchgeführt. Eine Lagerlaterne 16 ist mit dem Flanschring 2 verschweißt und über eine Lagerabstützung 17 mit der Drehmomentstütze 15 verbunden.2, a housing jacket 1 is welded to a flange ring 2, which in turn is welded to an inwardly curved disk 3 with welded-on half-tubes 4 for heating. Rotating disks 6 with kneading bars 7 and a kneading bar 7a on one side are fixedly arranged on a shaft 5. Between the disc 6 with the one-sided kneading bar 7a and the inside of the curved disc 3 there is a dead space 8, in which scrapers 9 rotate with the shaft 5. In the dead space 8, a crusher 10 is firmly connected to the housing shell 1. The kneading hooks 18 projecting into the housing are detachably connected to the housing jacket 1. The shaft 5 is guided through the curved disk 3 by means of an inner ring 11 welded to the disk 3 via a seal 12 and a bearing 13 to a drive 14 with a torque support 15. A bearing lantern 16 is welded to the flange ring 2 and connected to the torque arm 15 via a bearing support 17.

Fig. 3 entspricht im wesentlichen Fig. 2. Mit dem Gehäusemantel 1 ist ein Flanschring 19 verschweißt, der über eine Schraubverbindung mit einem Flanschring 20 lösbar verbunden ist. Der Flanschring 20 ist mit einer gewölbten Scheibe 21 und einer Laterne 22 verschweißt. Die Flanschringe 2 und 20 sind mit Innenradien 24 und 25 ausgestattet.3 essentially corresponds to FIG. 2. A flange ring 19 is welded to the housing jacket 1 and is releasably connected to a flange ring 20 by a screw connection. The flange ring 20 is welded to a curved disc 21 and a lantern 22. The flange rings 2 and 20 are equipped with inner radii 24 and 25.

Außerdem ist alternativ eine mit dem Flanschring 20 verschweißte nach außen gewölbte Scheibe 23 strichpunktiert angedeutet.In addition, an outwardly curved disk 23 welded to the flange ring 20 is alternatively indicated by dash-dotted lines.

Claims (5)

Misch- und Knetvorrichtung für die thermische Behandlung von Produkten in flüssigem, pastösem und/oder pulverförmigem Zustand mit oder ohne Zu- und Abführung von Gasen und Dämpfen, mit einem beheizbaren zylindrischen Gehäuse mit einem fest angeordneten und einem lösbaren Deckel an den Stirnseiten des Gehäuses und einer mit der Gehäuseachse gleichachsig verlaufenden beheizbaren Kneterwelle, an der in axialer Richtung verteilt mehrere Scheibenelemente vorgesehen sind, wobei sich in den Räumen zwischen den Scheibenelementen feststehende, die Scheibenelemente reinigende Knetelemente befinden, dadurch gekennzeichnet, daß die Deckel an den Stirnseiten des zylindrischen Gehäuses (1) unter Zwischenschaltung eines oder zweier Flanschringe (2,20,19) befestigt sind, wobei die Deckel gewölbte Scheiben (3,21) sind.Mixing and kneading device for the thermal treatment of products in liquid, pasty and / or powdery state with or without supply and discharge of gases and vapors, with a heatable cylindrical housing with a fixed and a detachable cover on the front sides of the housing and a heatable kneader shaft which runs coaxially with the housing axis and on which several disk elements are provided distributed in the axial direction, fixed kneading elements cleaning the disk elements being located in the spaces between the disk elements, characterized in that the covers on the end faces of the cylindrical housing (1 ) with the interposition of one or two flange rings (2, 20, 19), the cover being curved washers (3.21). Misch- und Knetvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Deckel nach außen gewölbte Scheiben (23) sind.Mixing and kneading device according to claim 1, characterized in that the covers are outwardly curved disks (23). Misch- und Knetvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Deckel nach innen gewölbte Scheiben (3,21) sind.Mixing and kneading device according to claim 1, characterized in that the covers are inwardly curved disks (3,21). Misch- und Knetvorrichtung nach den Ansprüchen 1 bis 3 oder einem derselben, dadurch gekennzeichnet, daß auf die gewölbten Scheiben (3,21,23) Halbrohre zur Beheizung aufgeschweißt sind.Mixing and kneading device according to claims 1 to 3 or one of the same, characterized in that half-tubes for heating are welded onto the curved disks (3, 21, 23). Misch- und Knetvorrichtung nach den Ansprüchen 1 bis 4 oder einem derselben, dadurch gekennzeichnet, daß der Innenradius (24,25) der Flanschringe (2,20) relativ groß ausgebildet ist.Mixing and kneading device according to claims 1 to 4 or one of the same, characterized in that the inner radius (24, 25) of the flange rings (2, 20) is relatively large.
EP95118346A 1995-01-27 1995-11-22 Mixing and kneading device Ceased EP0728518A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19502571A DE19502571C2 (en) 1995-01-27 1995-01-27 Mixing and kneading device
DE19502571 1995-01-27

Publications (1)

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EP0728518A1 true EP0728518A1 (en) 1996-08-28

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EP95118346A Ceased EP0728518A1 (en) 1995-01-27 1995-11-22 Mixing and kneading device

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DE (1) DE19502571C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002078829A1 (en) * 2001-03-29 2002-10-10 Ammann Aufbereitung Ag Method for providing one or more functional surfaces for fastening bearing and/or drive units on a support structure in an exact position

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10233785A1 (en) * 2002-07-20 2004-02-05 Gebrüder Lödige Maschinenbau-Gesellschaft mit beschränkter Haftung Horizontal mixer with a high design

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2349106A1 (en) * 1972-10-18 1974-05-02 List Heinz MIXING KNEDE WITH COUNTER SHOVELS
DE3037333A1 (en) * 1980-10-02 1982-05-27 Eberhard Ing.(grad.) 7541 Straubenhardt Lipp Rotary mixer for pasty material has additional forks - attached to drive shaft between radial bladed arms
EP0451747A1 (en) * 1990-04-11 1991-10-16 List AG Continuously working mix kneader

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2593705A (en) * 1948-06-21 1952-04-22 Stickelber & Sons Inc Dough mixer with dough gripping and refrigerated wall
DE3100309C2 (en) * 1980-12-05 1986-01-02 Rolf Baumgartner Ag, Oftringen Device for moving, in particular mixing, a good
DE9110133U1 (en) * 1991-08-16 1991-09-26 Rütgerswerke AG, 6000 Frankfurt Stirred reactor
DE4201310A1 (en) * 1992-01-20 1993-07-22 Bayer Ag MIXING AND KNEADING DEVICE
DE4303852A1 (en) * 1993-02-10 1994-08-11 List Ag High torque mixer paddles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2349106A1 (en) * 1972-10-18 1974-05-02 List Heinz MIXING KNEDE WITH COUNTER SHOVELS
FR2203669A1 (en) * 1972-10-18 1974-05-17 List Heinz
DE3037333A1 (en) * 1980-10-02 1982-05-27 Eberhard Ing.(grad.) 7541 Straubenhardt Lipp Rotary mixer for pasty material has additional forks - attached to drive shaft between radial bladed arms
EP0451747A1 (en) * 1990-04-11 1991-10-16 List AG Continuously working mix kneader

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002078829A1 (en) * 2001-03-29 2002-10-10 Ammann Aufbereitung Ag Method for providing one or more functional surfaces for fastening bearing and/or drive units on a support structure in an exact position

Also Published As

Publication number Publication date
DE19502571A1 (en) 1996-08-01
DE19502571C2 (en) 1997-08-07

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