EP1477218A2 - Mixing blade with resealable tip - Google Patents

Mixing blade with resealable tip Download PDF

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Publication number
EP1477218A2
EP1477218A2 EP04005949A EP04005949A EP1477218A2 EP 1477218 A2 EP1477218 A2 EP 1477218A2 EP 04005949 A EP04005949 A EP 04005949A EP 04005949 A EP04005949 A EP 04005949A EP 1477218 A2 EP1477218 A2 EP 1477218A2
Authority
EP
European Patent Office
Prior art keywords
mixing blade
end piece
mixing
blade according
base body
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.)
Granted
Application number
EP04005949A
Other languages
German (de)
French (fr)
Other versions
EP1477218A3 (en
EP1477218B1 (en
Inventor
Martin Dörr
Stefan Dr. Gerl
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.)
Maschinenfabrik Gustav Eirich GmbH and Co KG
Original Assignee
Maschinenfabrik Gustav Eirich GmbH and Co KG
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 Maschinenfabrik Gustav Eirich GmbH and Co KG filed Critical Maschinenfabrik Gustav Eirich GmbH and Co KG
Priority to PL04005949T priority Critical patent/PL1477218T3/en
Publication of EP1477218A2 publication Critical patent/EP1477218A2/en
Publication of EP1477218A3 publication Critical patent/EP1477218A3/en
Application granted granted Critical
Publication of EP1477218B1 publication Critical patent/EP1477218B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B01F27/05—Stirrers
    • B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
    • B01F27/052—Stirrers with replaceable wearing elements; Wearing elements therefor
    • 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
    • B01F27/05—Stirrers
    • B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
    • 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
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to the shaft
    • 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
    • B01F27/05—Stirrers
    • B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
    • B01F27/091—Stirrers characterised by the mounting of the stirrers with respect to the receptacle with elements co-operating with receptacle wall or bottom, e.g. for scraping the receptacle wall
    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
    • B01F29/83—Mixers with rotating receptacles rotating about a substantially vertical axis with rotary paddles or arms, e.g. movable out of the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0418—Geometrical information
    • B01F2215/0422—Numerical values of angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0418—Geometrical information
    • B01F2215/0431—Numerical size values, e.g. diameter of a hole or conduit, area, volume, length, width, or ratios thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids
    • 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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1121—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades pin-shaped
    • 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
    • B01F35/50—Mixing receptacles
    • B01F35/512—Mixing receptacles characterised by surface properties, e.g. coated or rough

Definitions

  • the invention relates to a device for mixing in particular granular, abrasive materials, with a central rotor shaft and attached to the rotor shaft and radially from this extending mixing blades.
  • the present invention relates to a mixing blade and a Blend tail for such a device.
  • mixers are one or more perpendicular to the mixing vessel bottom arranged mixer shafts arranged with arranged in several planes, radially occidentalrekkenden, Mischhoffln are known.
  • the mixing blades have a preferably rectangular Cross section with a wedge-shaped taper or knife-like bevel in the forward direction, in order to give the material to be treated an axial flow during penetration. At after At the top, the material to be treated is loosened, while at the bottom directional bevel is compressed.
  • the mixing blade body is made in one piece and is made of relatively soft material such as e.g. Made of mild steel.
  • relatively soft material such as e.g. Made of mild steel.
  • the preferably applied by surfacing armor can be made of a hard and wear resistant coating, e.g. a tungsten carbide-containing alloy or a Carbide, consist. The local thickness of the armor is thereby acting on the mixing blade adapted locally different wear forces.
  • Multi-part mixer blades in particular bottom blades, are already known from the prior art for concrete mixers, with detachable bucket nose, which is located at a radial of a mixer shaft protruding and extending over a large part of the length of the mixer blades Support arm are attached.
  • detachable wear bodies of mixing devices are also detachably connected to a carrier body known in mixing devices.
  • mixing devices for.
  • asphalt mixers known in which the mixing organs consist essentially of hammerhead-shaped end pieces, which are connected to radially from a horizontal Mixer shaft protruding round support arms are fastened with screws.
  • Mixers to which the present invention relates are two different ones Aspects of essential importance and at the same time to note.
  • the subject Mixing tools considerable wear, which over the length of a mixing blade away very can be different.
  • an optimal mixing of the given Materials can be achieved in the shortest possible time.
  • the mixing blades must flow be optimized. In addition to the actual mixing blades radially into the mix extending support arms are generally disturbing and obstructive.
  • the mixing vanes are in operation by the flowing at different speeds over it Material flows consuming consuming. They are subject to high and above all the length of the wing varying wear. They preferably wear at their outer end due to the prevailing highest peripheral speed.
  • detachable end piece (7) at least in the immediate connection at the inner portion has substantially the same cross-section as this inner Section (6) of the mixing blade.
  • the mixing blade according to the invention has a substantially rectangular cross-section to Beilspiel with one or two knife-like chamfers and an end piece which can be detached with is connected to the clamped in the mixer shaft part of the mixing blade.
  • the contour of the detachable Endpiece corresponds essentially to the contour of the main body or of the radially inner Section of the mixing blade at its transition to the tail.
  • the cross section of the mixing blade becomes substantially perpendicular to a pointing in the direction of the mixing blade radius vector measured by the rotor
  • the mixing blade extends from one near the wave of the area lying to his End (including the end piece) with a desired, predetermined profile without additional disturbing support arms.
  • any support arms, which are attached directly to the rotor shaft, either very short compared to the radial Extension of the mixing blades, or the support arms are in the overlap area with the mixing blade in whose profile was recorded or integrated.
  • the cross section of the mixing blades a continuous and preferably smooth transition between the base body (6) and the detachable End piece (7).
  • Smooth means here with a continuous gradient or derivative, So without any kink at the transition point.
  • the detachable end piece to increase the service life be carried out particularly wear-resistant.
  • the tail compared to the rest Blades both of any more wear-resistant material such as a Oxide ceramics or carbide are also coated with another armor material become.
  • the tail with a much stronger partial armor or with a full armor be provided.
  • the invention thus achieved because of the same contour transition from the body to the tail in combination optimal, fast mixing results with an excellent maintainability and low maintenance costs.
  • the connection between End piece and main body of the mixing blade also very quickly and easily detachable and recoverable and yet safe and stable.
  • FIG. 1 shows a mixer 1, which in the preferred embodiment with a rotating Mixing container 2, consisting of a round flat mixer bottom 3 and a cylindrical Mixer wall 4, is provided.
  • the mixer also has an eccentric to Misch disposermitte arranged, overhung until reaching just above the mixer bottom rotor 5, the a plurality of arranged in planes radially extending mixing blades 6 with detachable end piece 7 carries.
  • the mixing container 2 and the rotor 5 are rotated by drives (not shown) in rotation.
  • the cylindrical wall 4 and the mixer bottom 3 are by a stationary, combined Wall floor tool 8 stripped off.
  • the rotor 5 consists of a polygonal shaft (not shown) on the plurality of tool holders 10 are arranged one above the other displaced. In the grooves 11 of the tool holder are the Blade 6 in pins (not shown) mounted by means of the bore 13.
  • the column of tool holders 10 with mixing blades 6 is provided by a suitable releasable connection for operation braced.
  • the mixing blade 6 and the end piece 7 consists of a preferably rectangular base body with a knife-like bevel 12. With the help of the bore 13, the mixing blades 6 with End piece 7 mounted in the tool holder 10.
  • the end piece 7 and the mixing blade 6 are formed as separate components. As in FIGS. 2 to 8 in FIG illustrate the plan view, the components at the junction by a suitable Attachment releasably connected together. The connection must be attacking the end piece 7 May transfer mixing forces on the mixing blade 6. In addition, the tail 7 must be secured against rotation relative to the remaining mixing blade 6.
  • the detachable connection and securing against rotation can be achieved by various variants (Fig. 2-8), for example, by an overlap of tail and mixing blades (Fig. 3, Fig. 6), by a or several centering pins (FIG. 2), two or more screws (FIG. 7), a form-fitting, polygonal pin-socket connection with axial screw connection (Fig. 4) or on one side Screwed metal strip (Fig. 8) take place.
  • connection of the end piece 7 takes place with the mixing blade 6 via a Screw 14 in the axial direction.
  • the screw 14 is sunk as deep as possible in the end piece 7 and the counterbore 18 closed by a suitable, removable filling 19.
  • the securing against twisting of the end piece takes place via one or more pins 15.
  • the bore 16 is preferably threaded, whose diameter is greater than the thread diameter 17 in the mixing blade 6.
  • the hole Threaded 16 can in the disassembly of the tail 7 of mixing blades 6 by use a pressure screw to pull off the tail 7 of the pins 15 are used.
  • the components 6, 7 overlap at the connection point.
  • the main body of the end piece 7 and the mixing blade 6 are wear-resistant Coating 20 provided. At the overlap, they are by a suitable attachment 21, 22, e.g. one or more screw connections, connected together. The connection takes place from the trailing outer edge of the components 6, 7.
  • Figure 4 and Figure 5, section along the line A-A ', show a variant in which the connection between the components 6, 7 via a positive pin-socket connection 23, 24 takes place, wherein the pin and the socket is provided with a polygonal profile, which is a rotation of the pin 23 prevented in the socket 24.
  • the pin-socket connection is made via a suitable attachment, e.g. a screw in the axial direction 25, releasably connected to each other.
  • FIG. 2 Further modifications of the embodiments shown in FIG. 2, FIG. 3 and FIG. 4 are in different Way possible.
  • the dividing line between the mixing blade 6 and end piece. 7 lie at any point.
  • Variable is also the geometry and arrangement of the connecting surfaces, the attachment and the anti-twist device.
  • Figure 6 shows a variant in which the end piece 7 overlaps with the mixing blade 6 and the attachment takes place by a screw 26 in the axial direction.
  • FIG. 7 shows a variant of FIG. 1 in which the attachment and the anti-twist device are shown by several screws 27 in the axial direction.
  • FIG 8. The execution of the end piece 7 with a threaded pin 28 is shown in FIG 8.
  • the fuse against twisting of the end piece 7 takes place for example via a metal strip 29 with holes 30 and Screws 31 at the trailing outer edge of the components 6, 7th
  • Figure 9 and Figure 10, section along the line A-A ', show a variant of Figure 2, in which both the mixing blade 6 and the tail 7 two knife-like bevels 12, 32, 33 have.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Food-Manufacturing Devices (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

Where the detachable end section (7) is connected directly to the inner section (6) of the mixing impeller, it has the same cross section.

Description

Die Erfindung betrifft eine Vorrichtung zum Mischen von insbesondere körnigen, schleißenden Materialien, mit einer zentralen Rotorwelle und an der Rotorwelle angebrachten und sich radial von dieser erstreckenden Mischflügeln. Ebenso betrifft die vorliegende Erfindung einen Mischflügel und ein Mischflügelendstück für eine solche Vorrichtung.The invention relates to a device for mixing in particular granular, abrasive materials, with a central rotor shaft and attached to the rotor shaft and radially from this extending mixing blades. Likewise, the present invention relates to a mixing blade and a Blend tail for such a device.

Aus dem Stand der Technik sind Mischer mit einer oder mehreren senkrecht zum Mischbehälterboden angeordneten Mischerwellen, die mit in mehreren Ebenen angeordneten, sich radial erstrekkenden, Mischflügeln versehen sind, bekannt. Die Mischflügel besitzen einen vorzugsweise rechtekkigen Querschnitt mit einer keilförmigen Verjüngung bzw. messerartigen Abschrägung in Vorlaufrichtung, um dem Aufbereitungsgut bei der Durchdringung eine axiale Strömung zu verleihen. Bei nach oben gerichteter Abschrägung wird das Aufbereitungsgut aufgelockert, während es bei nach unten gerichteter Abschrägung verdichtet wird. From the prior art mixers are one or more perpendicular to the mixing vessel bottom arranged mixer shafts arranged with arranged in several planes, radially erstrekkenden, Mischflügeln are known. The mixing blades have a preferably rectangular Cross section with a wedge-shaped taper or knife-like bevel in the forward direction, in order to give the material to be treated an axial flow during penetration. At after At the top, the material to be treated is loosened, while at the bottom directional bevel is compressed.

Der Mischflügelgrundkörper besteht aus einem Stück und wird aus relativ weichem Material wie z.B. Baustahl gefertigt. Zum Schutz gegen Verschleiß sind die vorlaufenden Aussenkanten und das äußerste Ende sowie deren unmittelbare Umgebung durch Panzerung oder Hartmetallplattierung geschützt. Die vorzugsweise durch Auftragsschweißung aufgebrachte Panzerung kann aus einer harten und verschleißfesten Beschichtung, z.B. einer wolframkarbidhaltigen Legierung oder einem Hartmetall, bestehen. Die lokale Dicke der Panzerung wird dabei den auf den Mischflügel wirkenden lokal unterschiedlichen Verschleißkräften angepaßt.The mixing blade body is made in one piece and is made of relatively soft material such as e.g. Made of mild steel. To protect against wear, the leading outer edges and the outermost End and its immediate environment protected by armor or hard metal plating. The preferably applied by surfacing armor can be made of a hard and wear resistant coating, e.g. a tungsten carbide-containing alloy or a Carbide, consist. The local thickness of the armor is thereby acting on the mixing blade adapted locally different wear forces.

Aus dem Stand der Technik sind bereits mehrteilige Mischerschaufeln, insbesondere Bodenschaufeln für Betonmischer, mit lösbarer Schaufelnase bekannt, die an einem radial von einer Mischerwelle abstehenden und sich über einen großen Teil der Länge der Mischerschaufeln erstreckenden Tragarm befestigt sind.Multi-part mixer blades, in particular bottom blades, are already known from the prior art for concrete mixers, with detachable bucket nose, which is located at a radial of a mixer shaft protruding and extending over a large part of the length of the mixer blades Support arm are attached.

Generell sind auch mit einem Trägerkörper lösbar verbundene Verschleißkörper von Mischorganen in Mischvorrichtungen bekannt.In general, detachable wear bodies of mixing devices are also detachably connected to a carrier body known in mixing devices.

Des weiteren sind Mischvorrichtungen, z. B. von Asphaltmischern, bekannt, bei denen die Mischorgane im wesentlichen aus hammerkopfförmige Endstücken bestehen, die an radial von einer horizontalen Mischerwelle abstehenden runden Tragarmen mit Schrauben befestigt sind.Furthermore, mixing devices, for. As of asphalt mixers, known in which the mixing organs consist essentially of hammerhead-shaped end pieces, which are connected to radially from a horizontal Mixer shaft protruding round support arms are fastened with screws.

Bei Mischvorrichtungen, auf welche die vorliegende Erfindung sich bezieht, sind zwei verschiedene Aspekte von wesentlicher Bedeutung und gleichzeitig zu beachten. Zum einen unterliegen die Mischwerkzeuge einem erheblichen Verschleiß, der über die Länge eines Mischflügels hinweg sehr unterschiedlich sein kann. Zum anderen soll aber auch eine optimale Durchmischung der gegebenen Materialien in möglichst kurzer Zeit erzielt werden. Hierzu müssen die Mischflügel strömungstechnisch optimiert sein. Neben den eigentlichen Mischflügeln sich radial in das Mischgut hinein erstreckende Tragarme sind dabei im allgemeinen störend und hinderlich.Mixers to which the present invention relates are two different ones Aspects of essential importance and at the same time to note. For one, the subject Mixing tools considerable wear, which over the length of a mixing blade away very can be different. On the other hand, but also an optimal mixing of the given Materials can be achieved in the shortest possible time. For this purpose, the mixing blades must flow be optimized. In addition to the actual mixing blades radially into the mix extending support arms are generally disturbing and obstructive.

Die Mischflügel werden im Betrieb durch die mit unterschiedlicher Geschwindigkeit darüber strömenden Materialströme schleißend beansprucht. Sie unterliegen dabei hohem und vor allem über die Länge des Flügels variierendem Verschleiß. Sie verschleißen bevorzugt an ihrem äußeren Ende aufgrund der dort vorherrschenden höchsten Umfangsgeschwindigkeit.The mixing vanes are in operation by the flowing at different speeds over it Material flows consuming consuming. They are subject to high and above all the length of the wing varying wear. They preferably wear at their outer end due to the prevailing highest peripheral speed.

Ist der an den Enden der Mischflügel aufgebrachte Verschleißschutz abgenutzt, so wird das darunter befindliche weiche Grundmaterial leicht abgetragen und ausgewaschen. Der Mischflügel verkürzt sich nach Abtrag des Verschleißschutzes über-proportional schnell, wobei durch die dabei entstehenden Auswaschungen auch ganze Teile des Verschleißschutzes und des Grundkörpers herausbrechen können, was zu Schäden an dem Mischer oder an nachgeschalteten Maschinen führen kann, zumindest jedoch zu einer Betriebsunterbrechung.If the worn on the ends of the mixing blades wear protection worn out, so that is under soft base material slightly removed and washed out. The mixing blade shortens after removal of wear protection over-proportionally fast, with the resulting Wash out also whole parts of the wear protection and the base body may cause damage to the mixer or downstream machinery can, but at least to a business interruption.

Darüber hinaus hat ein Verkürzung der Mischflügel eine Verschlechterung des Mischergebnisses zur Folge.In addition, a shortening of the mixing blades has a worsening of the mixing result result.

Um ein Mischergebnis mit konstanter Qualität zu erzielen müssen daher entweder die einzeln oder in Gruppen an der Welle befestigten Mischflügel oder aber gar die kompletten Wellen mit den daran angeschweißten Mischflügeln in regelmäßigen Abständen ausgetauscht werden, auch wenn nur die äußeren Enden der Mischflügel bis auf das Grundmaterial abgetragen sind und der Schleißschutz an den vorlaufenden Aussenkanten noch ausreichend stark ist.To achieve a mixing result with constant quality must therefore be either individually or in groups attached to the shaft mixing blades or even the complete waves with the it welded mixing blades are replaced at regular intervals, even if only the outer ends of the mixing blades are worn down to the base material and the wear protection at the leading outer edges is still strong enough.

Gegenüber dem oben genannten Stand der Technik ist es Aufgabe der vorliegenden Erfindung, eine Vorrichtung mit den eingangs genannten Merkmalen bereitzustellen, die in der Lage ist, zu geringeren Kosten und mit geringerem Wartungsaufwand dauerhaft gute Mischergebnisse zu liefern.Compared to the above-mentioned prior art, it is an object of the present invention, a To provide device with the features mentioned, which is able to lower Cost and with less maintenance permanently good mixing results to deliver.

Diese Aufgabe wird dadurch gelöst daß das lösbare Endstück (7) mindestens im unmittelbaren Anschluß an den inneren Abschnitt im wesentlichen den gleichen Querschnitt besitzt wie dieser innere Abschnitt (6) des Mischflügels.This object is achieved in that the detachable end piece (7) at least in the immediate connection at the inner portion has substantially the same cross-section as this inner Section (6) of the mixing blade.

Der erfindungsgemäße Mischflügel besitzt zum Beilspiel einen im wesentlichen rechteckigen Querschnitt mit einer oder zwei messerartigen Abschrägungen sowie ein Endstück, welches lösbar mit dem in der Mischerwelle eingespannten Teil des Mischflügels verbunden ist. Die Kontur des lösbaren Endstücks entspricht dabei im wesentlichen der Kontur des Grundkörpers bzw. des radial inneren Abschnitts des Mischflügels an dessen Übergang zum Endstück. Der Querschnitt des Mischflügels wird dabei im wesentlichen senkrecht zu einem in Richtung des Mischflügels weisenden Radiusvektor des Rotors gemessenThe mixing blade according to the invention has a substantially rectangular cross-section to Beilspiel with one or two knife-like chamfers and an end piece which can be detached with is connected to the clamped in the mixer shaft part of the mixing blade. The contour of the detachable Endpiece corresponds essentially to the contour of the main body or of the radially inner Section of the mixing blade at its transition to the tail. The cross section of the mixing blade becomes substantially perpendicular to a pointing in the direction of the mixing blade radius vector measured by the rotor

Der Mischflügel erstreckt sich dabei von einem nahe der Welle der gelegenen Bereich bis zu seinem Ende (einschließlich des Endstücks) mit einem gewünschten, vorgegebenen Profil ohne zusätzliche störende Tragarme. In der bevorzugten Ausführungsform der Erfindung sind daher etwaige Tragarme, die unmittelbar an der Rotorwelle befestigt sind, entweder sehr kurz im Vergleich zur radialen Erstreckung der Mischflügel, oder die Tragarme sind im Überlappungsbereich mit dem Mischflügel in dessen Profil aufgenommen bzw. integriert.The mixing blade extends from one near the wave of the area lying to his End (including the end piece) with a desired, predetermined profile without additional disturbing support arms. In the preferred embodiment of the invention, therefore, any support arms, which are attached directly to the rotor shaft, either very short compared to the radial Extension of the mixing blades, or the support arms are in the overlap area with the mixing blade in whose profile was recorded or integrated.

Durch die einzeln austauschbaren Endstücke können, aufgrund des bevorzugten Verschleißes an diesen Endstücken, erhebliche Kostenvorteile bei Verschleiß- und Wartungskosten erzielt werden. Wegen der gleichen Kontur am Übergang vom radial inneren Abschnitt zum radial äußeren Endstück sind dabei die Mischeigenschaften der Vorrichtung identisch mit denen eine entsprechenden Vorrichtung, die einstückige Mischflügel aufweist. Gleichzeitig sind aber die Wartungskosten und auch die Wartungszeiten spürbar reduziert, weil bei einem Verschleiß der Endstücke nicht mehr die kompletten Mischflügel ausgetauscht werden müssen, sondem nur noch deren lösbare Endstücke. Da unter diesen Umständen die Endstücke auch schneller und bereitwilliger ausgetauscht werden als komplette Mischflügel, werden im Durchschnitt auch bessere Mischergebnisse erzielt, bzw. die Mischvorgänge im Mittel zeitlich abgekürzt.Due to the individually exchangeable end pieces can, due to the preferred wear on These end pieces, significant cost advantages in terms of wear and maintenance costs can be achieved. Because of the same contour at the transition from the radially inner portion to the radially outer end piece are the mixing properties of the device identical to those of a corresponding Device having integral mixing blades. At the same time, however, the maintenance costs and also the maintenance times noticeably reduced, because with a wear of the end pieces no longer the complete mixing blades must be replaced, but only their detachable end pieces. Since under these circumstances, the tails are replaced faster and more readily as complete mixing blades, on average, better mixing results are achieved, or the Mixing operations on average abbreviated in time.

In einer bevorzugten Ausführungsform ist vorgesehen, daß der Querschnitt der Mischflügel einen stetigen und vorzugsweise glatten Übergang zwischen dem Grundkörper (6) und dem lösbaren Endstück (7) aufweist. "Glatt" bedeutet hier mit einer stetig verlaufenden Steigung bzw Ableitung, also ohne irgendeinen Knick an der Übergangsstelle.In a preferred embodiment it is provided that the cross section of the mixing blades a continuous and preferably smooth transition between the base body (6) and the detachable End piece (7). "Smooth" means here with a continuous gradient or derivative, So without any kink at the transition point.

In einer weiteren vorteilhaften Ausführung kann das lösbare Endstück zur Erhöhung der Standzeit besonders verschleißfest ausgeführt werden. Hierzu kann das Endstück im Vergleich zum restlichen Mischflügel sowohl aus einem beliebigen verschleißfesteren Werkstoff wie beispielsweise einer Oxidkeramik oder Hartmetall bestehen als auch mit einem anderen Panzerungswerkstoff beschichtet werden. Daneben kann das Endstück mit einer wesentlich stärkeren Teilpanzerung oder auch mit einer Vollpanzerung versehen werden.In a further advantageous embodiment, the detachable end piece to increase the service life be carried out particularly wear-resistant. For this purpose, the tail compared to the rest Blades both of any more wear-resistant material such as a Oxide ceramics or carbide are also coated with another armor material become. In addition, the tail with a much stronger partial armor or with a full armor be provided.

Die Erfindung erreicht somit wegen des konturgleichen Übergangs vom Grundkörper zum Endstück in Kombination optimale, schnelle Mischergebnisse bei einer ausgezeichneten Wartungsfreundlichkeit und geringen Wartungskosten. Soweit Stillstandszeiten aufgrund des unvermeidlichen Austauaschs von Verschleißteilen entstehen, werden diese zum einen dadurch verkürzt, daß nur relativ kleine, handliche und leicht zugängliche Endstücke der Mischflügel ausgetauscht werden müssen, wobei zum anderen, insbesondere in bevorzugten Ausführungsformen, die Verbindung zwischen Endstück und Grundkörper des Mischflügels auch sehr schnell und leicht lösbar und wieder herstellbar und dennoch sicher und stabil ist.The invention thus achieved because of the same contour transition from the body to the tail in combination optimal, fast mixing results with an excellent maintainability and low maintenance costs. As far as downtime due to the inevitable Austauaschs incurred by wearing parts, these are shortened by the fact that only relatively small, handy and easily accessible end pieces of the mixing blades have to be replaced, on the other hand, in particular in preferred embodiments, the connection between End piece and main body of the mixing blade also very quickly and easily detachable and recoverable and yet safe and stable.

Die Erfindung wird in den Zeichnungen beispielhaft und schematisch dargestellt. Im einzelnen zeigen:

Figur 1
einen rotierenden Mischbehälter mit exzentrisch angeordneter Mischerwelle und stationärem Wand-Boden Abstreifer
Figur 2
Draufsicht auf einen Mischflügel mit lösbarem Endstück und integrierter Abziehvorrichtung im Endstück
Figur 3
vergrößerte Draufsicht auf einen Mischflügel mit überlappendem Endstück und einer Panzerung
Figur 4
vergrößerte Draufsicht auf einen Mischflügel mit formschlüssiger, polygonaler Zapfen - Buchse Verbindung und Verschraubung
Figur 5
Schnitt eines Mischflügels entsprechend Pfeil A-A' von Figur 4
Figur 6
vergrößerte Draufsicht auf einen Mischflügel mit überlappendem Endstück und axialer Verschraubung
Figur 7
vergrößerte Draufsicht auf einen Mischflügel mit zwei Verschraubungen in axialer Richtung
Figur 8
vergrößerte Draufsicht auf einen Mischflügel mit schraubbarem Endstück und Verdrehsicherung über einen verschraubten Blechstreifen.
Figur 9
Draufsicht auf einen Mischflügel mit lösbarem Endstück gemäß Figur 2 mit zwei messerartigen Abschrägungen
Figur 10
Schnitt eines Mischflügels entsprechend Pfeil A-A' von Figur 9.
The invention is illustrated by way of example and schematically in the drawings. In detail show:
FIG. 1
a rotating mixing vessel with eccentrically arranged mixer shaft and stationary wall-floor scraper
FIG. 2
Top view of a mixing blade with detachable end piece and integrated puller in the tail
FIG. 3
enlarged plan view of a mixing blade with overlapping tail and an armor
FIG. 4
enlarged plan view of a mixing blade with positive polygonal pin - socket connection and screw connection
FIG. 5
Section of a mixing blade according to arrow AA 'of Figure 4
FIG. 6
enlarged plan view of a mixing blade with overlapping end piece and axial screw connection
FIG. 7
enlarged plan view of a mixing blade with two screw connections in the axial direction
FIG. 8
enlarged plan view of a mixing blade with screwable tail and anti-rotation over a bolted sheet metal strip.
FIG. 9
Top view of a mixing blade with detachable end piece according to Figure 2 with two blade-like bevels
FIG. 10
Section of a mixing blade according to arrow AA 'of Figure 9.

Figur 1 zeigt einen Mischer 1, der in der bevorzugten Ausführungsform mit einem rotierenden Mischbehälter 2, bestehend aus einem runden ebenen Mischerboden 3 und einer zylinderförmigen Mischerwand 4, versehen ist. Der Mischer besitzt ferner einen exzentrisch zur Mischbehältermitte angeordneten, fliegend gelagerten bis knapp oberhalb des Mischerbodens reichenden Rotor 5, der mehrere in Ebenen angeordnete radial erstreckende Mischflügel 6 mit lösbarem Endstück 7 trägt. Der Mischbehälter 2 sowie der Rotor 5 werden über Antriebe (nicht dargestellt) in Rotation versetzt. Die zylindrische Wand 4 sowie der Mischerboden 3 werden durch ein stationäres, kombiniertes Wand-Bodenwerkzeug 8 abgestreift. Die Entleerung des Mischbehälters 2 erfolgt über die zentrale verschließbare Bodenentleeröffnung 9.Figure 1 shows a mixer 1, which in the preferred embodiment with a rotating Mixing container 2, consisting of a round flat mixer bottom 3 and a cylindrical Mixer wall 4, is provided. The mixer also has an eccentric to Mischbehältermitte arranged, overhung until reaching just above the mixer bottom rotor 5, the a plurality of arranged in planes radially extending mixing blades 6 with detachable end piece 7 carries. The mixing container 2 and the rotor 5 are rotated by drives (not shown) in rotation. The cylindrical wall 4 and the mixer bottom 3 are by a stationary, combined Wall floor tool 8 stripped off. The emptying of the mixing container 2 via the central closable bottom emptying opening 9.

Der Rotor 5 besteht aus einer polygonalen Welle (nicht dargestellt) auf der mehrere Werkzeughalter 10 übereinander verschiebbar angeordnet sind. In den Nuten 11 der Werkzeughalter werden die Mischflügel 6 in Stifte (nicht dargestellt) mit Hilfe der Bohrung 13 eingehängt. Die Säule aus Werkzeughaltern 10 mit Mischflügeln 6 wird durch eine geeignete lösbare Verbindung für den Betrieb verspannt.The rotor 5 consists of a polygonal shaft (not shown) on the plurality of tool holders 10 are arranged one above the other displaced. In the grooves 11 of the tool holder are the Blade 6 in pins (not shown) mounted by means of the bore 13. The column of tool holders 10 with mixing blades 6 is provided by a suitable releasable connection for operation braced.

Der Mischflügel 6 und das Endstück 7 besteht aus einem vorzugsweise rechteckigen Grundkörper mit einer messerartigen Abschrägung 12. Mit Hilfe der Bohrung 13 werden die Mischflügel 6 mit Endstück 7 im Werkzeughalter 10 eingehängt.The mixing blade 6 and the end piece 7 consists of a preferably rectangular base body with a knife-like bevel 12. With the help of the bore 13, the mixing blades 6 with End piece 7 mounted in the tool holder 10.

Das Endstück 7 und der Mischflügel 6 sind als getrennte Bauteile ausgebildet. Wie Figur 2 bis 8 in der Draufsicht verdeutlichen, werden die Bauteile an der Verbindungsstelle durch eine geeignete Befestigung lösbar miteinander verbunden. Die Verbindung muß dabei die am Endstück 7 angreifenden Mischkräfte auf den Mischflügel 6 übertragen können. Darüber hinaus muß das Endstück 7 gegenüber dem restlichen Mischflügel 6 gegen verdrehen gesichert werden. The end piece 7 and the mixing blade 6 are formed as separate components. As in FIGS. 2 to 8 in FIG illustrate the plan view, the components at the junction by a suitable Attachment releasably connected together. The connection must be attacking the end piece 7 May transfer mixing forces on the mixing blade 6. In addition, the tail 7 must be secured against rotation relative to the remaining mixing blade 6.

Die lösbare Verbindung und Sicherung gegen Verdrehung kann durch verschiedene Varianten (Fig. 2-8), beispielsweise durch eine Überlappung von Endstück und Mischflügel (Fig. 3, Fig. 6), durch ein oder mehrere Zentrierstifte (Fig. 2), zwei oder mehrere Schrauben (Fig. 7), eine formschlüssige, polygonale Zapfen-Buchse Verbindung mit axialer Verschraubung (Fig. 4) oder über einen seitlich verschrauben Blechstreifen (Fig. 8) erfolgen.The detachable connection and securing against rotation can be achieved by various variants (Fig. 2-8), for example, by an overlap of tail and mixing blades (Fig. 3, Fig. 6), by a or several centering pins (FIG. 2), two or more screws (FIG. 7), a form-fitting, polygonal pin-socket connection with axial screw connection (Fig. 4) or on one side Screwed metal strip (Fig. 8) take place.

In der Variante der Figur 2 erfolgt die Verbindung des Endstücks 7 mit dem Mischflügel 6 über eine Verschraubung 14 in axialer Richtung. Die Verschraubung 14 wird möglichst tief im Endstück 7 versenkt und die Senkbohrung 18 durch eine geeignete, wieder entfernbare Füllung 19 verschlossen. Die Sicherung gegen Verdrehung des Endstücks erfolgt über ein oder mehrere Stifte 15. Bei Verwendung von mehr als einem Stift 15 wird die Bohrung 16 vorzugsweise mit einem Gewinde versehen, dessen Durchmesser größer als der Gewindedurchmesser 17 im Mischflügel 6 ist. Die Bohrung 16 mit Gewinde kann bei der Demontage des Endstücks 7 von Mischflügel 6 durch Verwendung einer Druckschraube zum Abziehen des Endstücks 7 von den Stiften 15 genutzt werden.In the variant of Figure 2, the connection of the end piece 7 takes place with the mixing blade 6 via a Screw 14 in the axial direction. The screw 14 is sunk as deep as possible in the end piece 7 and the counterbore 18 closed by a suitable, removable filling 19. The securing against twisting of the end piece takes place via one or more pins 15. When used of more than one pin 15, the bore 16 is preferably threaded, whose diameter is greater than the thread diameter 17 in the mixing blade 6. The hole Threaded 16 can in the disassembly of the tail 7 of mixing blades 6 by use a pressure screw to pull off the tail 7 of the pins 15 are used.

In der in Figur 3 gezeigten Ausführungsvariante überlappen sich die Bauteile 6, 7 an der Verbindungsstelle. Die Grundkörper des Endstückes 7 sowie der Mischflügels 6 sind mit einer verschleißfesten Beschichtung 20 versehen. An der Überlappungsstelle sind sie durch eine geeignete Befestigung 21, 22, z.B. ein oder mehrere Schraubverbindungen, miteinander verbunden. Die Verbindung erfolgt dabei von der nachlaufenden Aussenkante der Bauteile 6, 7 aus.In the embodiment variant shown in FIG. 3, the components 6, 7 overlap at the connection point. The main body of the end piece 7 and the mixing blade 6 are wear-resistant Coating 20 provided. At the overlap, they are by a suitable attachment 21, 22, e.g. one or more screw connections, connected together. The connection takes place from the trailing outer edge of the components 6, 7.

Figur 4 und Figur 5, Schnitt entlang der Linie A-A', zeigen eine Variante, bei der die Verbindung zwischen den Bauteilen 6, 7 über eine formschlüssige Zapfen-Buchse Verbindung 23, 24 erfolgt, wobei der Zapfen und die Buchse mit einem Polygonprofil versehen wird, welches ein verdrehen des Zapfens 23 in der Buchse 24 verhindert. Die Zapfen-Buchse Verbindung wird über eine geeignete Befestigung, z.B. eine Verschraubung in axialer Richtung 25, lösbar miteinander verbunden.Figure 4 and Figure 5, section along the line A-A ', show a variant in which the connection between the components 6, 7 via a positive pin-socket connection 23, 24 takes place, wherein the pin and the socket is provided with a polygonal profile, which is a rotation of the pin 23 prevented in the socket 24. The pin-socket connection is made via a suitable attachment, e.g. a screw in the axial direction 25, releasably connected to each other.

Weitere Abwandlungen der in Fig. 2, Fig. 3 und Fig. 4 gezeigten Ausführungsformen sind in verschiedener Weise möglich. Zum einen kann die Trennlinie zwischen Mischflügel 6 und Endstück 7 an einer beliebigen Stelle liegen. Variabel ist hierbei auch die Geometrie und Anordnung der Verbindungsflächen, der Befestigung und der Verdrehsicherung.Further modifications of the embodiments shown in FIG. 2, FIG. 3 and FIG. 4 are in different Way possible. On the one hand, the dividing line between the mixing blade 6 and end piece. 7 lie at any point. Variable is also the geometry and arrangement of the connecting surfaces, the attachment and the anti-twist device.

Figur 6 zeigt eine Variante, bei der das Endstück 7 mit dem Mischflügel 6 überlappt und die Befestigung durch eine Schraubverbindung 26 in axialer Richtung erfolgt.Figure 6 shows a variant in which the end piece 7 overlaps with the mixing blade 6 and the attachment takes place by a screw 26 in the axial direction.

In Figur 7 ist eine Variante der Figur 1 dargestellt, bei der die Befestigung und die Verdrehsicherung durch mehrere Schrauben 27 in axialer Richtung erfolgt. FIG. 7 shows a variant of FIG. 1 in which the attachment and the anti-twist device are shown by several screws 27 in the axial direction.

Die Ausführung des Endstücks 7 mit einem Gewindezapfen 28 zeigt Figur 8. Die Sicherung gegen verdrehen des Endstücks 7 erfolgt beispielsweise über einen Blechstreifen 29 mit Bohrungen 30 und Verschraubungen 31 an der nachlaufenden Aussenkante der Bauteile 6, 7.The execution of the end piece 7 with a threaded pin 28 is shown in FIG 8. The fuse against twisting of the end piece 7 takes place for example via a metal strip 29 with holes 30 and Screws 31 at the trailing outer edge of the components 6, 7th

Figur 9 und Figur 10, Schnitt entlang der Linie A-A', zeigen eine Variante der Figur 2, bei der sowohl der Mischflügel 6 als auch das Endstück 7 zwei messerartige Abschrägungen 12, 32, 33 besitzen. Vorzugsweise besitzt nur der Mischflügel 6 zwei verschleißgeschützte messerartige Abschrägungen 12, 32. Da der Verschleiß bevorzugt in Vorlaufrichtung sowie am Endstück 7 erfolgt, kann sowohl der Mischflügel 6 durch 180° Drehung in den Nuten 11 des Werkzeughalters 10 als auch das Endstück 7 durch entsprechende Drehung so lange weiter verwendet werden, bis der Verschleißschutz auf den Abschrägungen 12 und 32 bzw. 33 vollständig verschlissen ist.Figure 9 and Figure 10, section along the line A-A ', show a variant of Figure 2, in which both the mixing blade 6 and the tail 7 two knife-like bevels 12, 32, 33 have. Preferably, only the mixing blade 6 has two wear-resistant knife-like bevels 12, 32. Since the wear is preferably in the forward direction and the tail 7, both the mixing blade 6 by 180 ° rotation in the grooves 11 of the tool holder 10 and the tail 7 continue to be used by appropriate rotation until the wear protection is completely worn on the chamfers 12 and 32 and 33, respectively.

Claims (25)

Vorrichtung zum Mischen, insbesondere von körnigen, schleißenden Materialien, mit mindestens einer Rotorwelle (5) und mit Mischflügeln, die an der Rotorwelle angebracht sind und sich im wesentlichen radial von dieser Rotorwelle nach außen erstrecken, wobei der Mischflügel aus einem radial inneren Abschnitt (Grundkörper 6) und einem radial äußeren Endstück (7) besteht, dadurch gekennzeichnet, daß das lösbare Endstück (7) mindestens im unmittelbaren Anschluß an den inneren Abschnitt im wesentlichen den gleichen Querschnitt besitzt wie dieser radial innere Abschnitt (6) des Mischflügels.Apparatus for mixing, in particular of granular, abrasive materials, with at least one rotor shaft (5) and with mixing vanes mounted on the rotor shaft and extending outwards substantially radially from said rotor shaft, said mixing blade being formed from a radially inner portion (main body) 6) and a radially outer end piece (7), characterized in that the detachable end piece (7) at least in direct connection to the inner portion has substantially the same cross-section as this radially inner portion (6) of the mixing blade. Mischflügel zur Verwendung an einer Vorrichtung nach Anspruch 1, wobei der Mischflügel aus einem radial inneren Abschnitt bzw. Grundkörper (6) und einem radial äußeren Endstück besteht, dadurch gekennzeichnet, daß der Querschnitt des Mischflügels einen stetigen und vorzugsweise glatten Übergang zwischen dem Grundkörper (6) und dem lösbaren Endstück (7) aufweist.A mixing blade for use on a device according to claim 1, wherein the mixing blade consists of a radially inner portion (6) and a radially outer end, characterized in that the cross section of the mixing blade a continuous and preferably smooth transition between the base body (6 ) and the detachable end piece (7). Mischflügel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Mischflügel einen im wesentlichen rechteckigen Querschnitt mit einer sich keilförmig verjüngenden vorlaufenden Kante (12) aufweist.A mixing blade according to claim 1 or 2, characterized in that the mixing blade has a substantially rectangular cross-section with a wedge-shaped tapered leading edge (12). Mischflügel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Länge des Endstücks (7) zwischen 5 % und 50 %, vorzugsweise zwischen 10 % und 30 % der Gesamtlänge der Mischflügel entspricht.A mixing blade according to any one of claims 1 to 3, characterized in that the length of the end piece (7) corresponds to between 5% and 50%, preferably between 10% and 30% of the total length of the mixing blades. Mischflügel nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß das Endstück (7) mit Überlappung an dem Grundkörper (6) befestigt ist.A mixing blade according to claims 1 to 4, characterized in that the end piece (7) is attached with overlapping to the base body (6). Mischflügel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Endstück (7) über eine formschlüssige vorzugsweise polygonale Zapfen-Buchse-Verbindung mit dem Grundkörper (6) verbunden ist.Mixing blade according to one of claims 1 to 5, characterized in that the end piece (7) via a positive, preferably polygonal pin-socket connection with the base body (6) is connected. Mischflügel nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Endstück (7) über einen Gewindezapfen (28) mit dem Grundkörper (6) verbunden ist.A mixing blade according to one of claims 1 to 6, characterized in that the end piece (7) is connected to the base body (6) via a threaded pin (28). Mischflügel nach Anspruch 7, dadurch gekennzeichnet, daß das Endstück (7) durch eine zusätzliche Befestigung gegen Verdrehung gesichert ist. A mixing blade according to claim 7, characterized in that the end piece (7) is secured against rotation by an additional fastening. Mischflügel nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Endstück (7) mit einer axialen Verschraubung (14) befestigt und mit mindestens einem Stift (15) gegen Verdrehung gesichert ist.A mixing blade according to one of claims 1 to 6, characterized in that the end piece (7) is fastened with an axial screw connection (14) and is secured against rotation by means of at least one pin (15). Mischflügel nach einem der Ansprüche 1 bis 6, daß das Endstück (7) mit mehreren axialen Schrauben am Grundkörper (6) befestigt und gegen Verdrehen gesichert ist.Mixing blade according to one of claims 1 to 6, that the end piece (7) with a plurality of axial Screws on the base body (6) attached and secured against rotation. Mischflügel nach Anspruch 9, dadurch gekennzeichnet, daß das Endstück (7) mit einer Gewindebohrung versehen ist, die ein abziehen des Endstücks (7) von den Stiften (15) ermöglicht.A mixing blade according to claim 9, characterized in that the end piece (7) is provided with a threaded bore, which allows a withdrawal of the end piece (7) from the pins (15). Mischflügel nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die axialen Senkbohrungen (18) im Endstück (7) mit einer geeigneten, wieder entfernbaren Füllung (19) verschlossen sind.A mixing blade according to any one of claims 1 to 11, characterized in that the axial counterbores (18) in the end piece (7) are closed with a suitable, removable filler (19). Mischflügel nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß Endstück (7) eine verschleißfeste Beschichtung (20) aufweist.A mixing blade according to any one of claims 1 to 12, characterized in that end piece (7) has a wear-resistant coating (20). Mischflügel nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß der Grundkörper (6) eine verschleißfeste Beschichtung aufweist.A mixing blade according to any one of claims 1 to 13, characterized in that the base body (6) has a wear-resistant coating. Mischflügel nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß die Art und Stärke der verschleißfesten Beschichtung auf dem Grundkörper (6) und dem Endstück (7) unterschiedlich ausgeführt sind.A mixing blade according to any one of claims 1 to 14, characterized in that the type and thickness of the wear-resistant coating on the base body (6) and the end piece (7) are designed differently. Mischflügel nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß die Art und Stärke der verschleißfesten Beschichtung auf dem Mischflügel (6) und Endstück (7) gleichartig ausgeführt sind.A mixing blade according to any one of claims 1 to 14, characterized in that the type and thickness of the wear-resistant coating on the mixing blade (6) and end piece (7) are made similar. Mischflügel nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß das Grundmaterial des Grundkörpers (6) und des Endstücks (7) aus dem gleichen Material vorzugsweise aus Baustahl oder Stahlguß besteht.A mixing blade according to any one of claims 1 to 16, characterized in that the base material of the base body (6) and the end piece (7) of the same material is preferably made of structural steel or cast steel. Mischflügel nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß das Grundmaterial des Grundkörpers (6) und des Endstücks (7) aus unterschiedlichem Material besteht. A mixing blade according to any one of claims 1 to 16, characterized in that the base material of the main body (6) and the end piece (7) consists of different material. Mischflügel nach einem der Ansprüche 1 bis 16 oder 18, dadurch gekennzeichnet, daß das Endstück (7) vollständig aus einem anderen verschleißfesten Werkstoff, vorzugsweise einem Hartstahlguß, einer Oxidkeramik oder Hartmetall besteht.A mixing blade according to one of claims 1 to 16 or 18, characterized in that the end piece (7) consists entirely of another wear-resistant material, preferably a hard steel casting, an oxide ceramic or hard metal. Mischflügel nach einem der Ansprüche 1 bis 19, dadurch gekennzeichnet, daß die Befestigung des Endstücks (7) am Grundkörper (6) vorzugsweise im ungepanzerten Grundmaterial angeordnet ist.A mixing blade according to any one of claims 1 to 19, characterized in that the attachment of the end piece (7) to the base body (6) is preferably arranged in the unarmored base material. Mischflügel nach einem der Ansprüche 1 bis 20, dadurch gekennzeichnet, daß die verschleißfeste Beschichtung (20) auf dem Endstück (7) und Grundkörper (6) aus einer durch Auftragsschweißung aufgebrachten harten Panzerung besteht.A mixing blade according to any one of claims 1 to 20, characterized in that the wear-resistant coating (20) on the end piece (7) and base body (6) consists of hard armor applied by build-up welding. Mischflügel nach einem der Ansprüche 1 bis 21, dadurch gekennzeichnet, daß die Panzerung (20) auf dem Endstück (7) und dem Grundkörper (6) aus einer wolframcarbidhaltigen Metallegierung besteht.A mixing blade according to any one of claims 1 to 21, characterized in that the armor (20) on the end piece (7) and the base body (6) consists of a tungsten carbide-containing metal alloy. Mischflügel nach einem der Ansprüche 1 bis 22, dadurch gekennzeichnet, daß die Panzerung (20) auf dem Endstück (7) und dem Grundkörper (6) aus einer Hartmetallplattierung besteht.A mixing blade according to any one of claims 1 to 22, characterized in that the armor (20) on the end piece (7) and the base body (6) consists of a hard metal cladding. Endstück für einen Mischflügel nach einem der Ansprüche 2 bis 23 zur Verwendung in einer Mischvorrichtung nach Anspruch 1, gekennzeichnet durch einen dem Grundkörper des Mischflügels angepaßten Querschnitt.End piece for a mixing blade according to one of claims 2 to 23 for use in a mixing device according to claim 1, characterized by a cross-section adapted to the main body of the mixing blade. Vorrichtung nach Anspruch 1 mit Mischflügeln nach einem der Ansprüche 2 bis 23 und einem Endstück nach Anspruch 24, und mit Tragarmen für die Mischflügel, die unmittelbar von der Rotorwelle ausgehen, dadurch gekennzeichnet, daß die Tragarme im Vergleich zur radialen Erstreckung der Mischflügel deutlich kürzer sind und weniger als die Hälfte, vorzugsweise weniger als ein Drittel der radialen Länge der Mischflügel aufweisen, und/oder die Tragarme im Überlappungsbereich mit dem Mischflügel in dessen Profil aufgenommen bzw. integriert sind.Apparatus according to claim 1 with mixing blades according to one of claims 2 to 23 and an end piece according to claim 24, and with support arms for the mixing blades, which emanate directly from the rotor shaft, characterized in that the support arms are significantly shorter compared to the radial extent of the mixing blades and less than half, preferably less than one third of the radial length of the mixing vanes, and / or the support arms are included or integrated in the overlap region with the mixing blade in the profile.
EP04005949A 2003-05-13 2004-03-12 Mixing blade with releasable tip, tip for said mixing blade and mixing apparatus comprising such a mixing blade Expired - Lifetime EP1477218B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04005949T PL1477218T3 (en) 2003-05-13 2004-03-12 Mixing blade with releasable tip, tip for said mixing blade and mixing apparatus comprising such a mixing blade

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20307420U DE20307420U1 (en) 2003-05-13 2003-05-13 Blade with detachable tail
DE20307420U 2003-05-13

Publications (3)

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EP1477218A2 true EP1477218A2 (en) 2004-11-17
EP1477218A3 EP1477218A3 (en) 2005-07-13
EP1477218B1 EP1477218B1 (en) 2007-10-03

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EP04005949A Expired - Lifetime EP1477218B1 (en) 2003-05-13 2004-03-12 Mixing blade with releasable tip, tip for said mixing blade and mixing apparatus comprising such a mixing blade

Country Status (6)

Country Link
EP (1) EP1477218B1 (en)
AT (1) ATE374648T1 (en)
DE (2) DE20307420U1 (en)
DK (1) DK1477218T3 (en)
ES (1) ES2294383T3 (en)
PL (1) PL1477218T3 (en)

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WO2006111455A1 (en) * 2005-04-22 2006-10-26 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mixing blade provided with a removable wearable element
CN101855335A (en) * 2007-11-13 2010-10-06 克朗斯股份公司 Eccentric stirrer
CN102513019A (en) * 2011-12-14 2012-06-27 常州市永益工具有限公司 Stirring blade
CN110917918A (en) * 2019-12-24 2020-03-27 安徽省春谷3D打印智能装备产业技术研究院有限公司 3D prints and uses ceramic raw material agitating unit

Families Citing this family (8)

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DE102008041104A1 (en) 2008-08-07 2010-02-11 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mixer with induction heating
DE102010027885A1 (en) * 2010-04-16 2012-02-09 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mixing device with wear protection lining
DE102012105538B4 (en) 2012-06-26 2014-03-06 Gerhard Krauskopf Mixing tool holder with exchangeable mixing blades
CN110328422A (en) * 2019-07-30 2019-10-15 株洲金蚂蚁新材料有限公司 A kind of processing method that wear-resisting blade is mixed
CN112546904A (en) * 2020-11-26 2021-03-26 射阳县射阳港红太阳饲料厂 Agitating unit is used in feed production processing
CN112663439B (en) * 2020-12-18 2022-05-31 重庆九橡化大橡胶科技有限责任公司 Rubber asphalt mixing device
CN112681064B (en) * 2020-12-18 2022-05-31 重庆九橡化大橡胶科技有限责任公司 Asphalt macadam mixing system
CN112663438B (en) * 2020-12-18 2022-05-31 重庆九橡化大橡胶科技有限责任公司 Rubber asphalt macadam mixing method

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
WO2006111455A1 (en) * 2005-04-22 2006-10-26 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mixing blade provided with a removable wearable element
DE102005019010A1 (en) * 2005-04-22 2006-10-26 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mixing blades with detachable wear element
CN101163539B (en) * 2005-04-22 2011-06-15 德国古斯塔夫·爱立许机械制造有限公司 Mixing blade with removable wearing element
US8235583B2 (en) 2005-04-22 2012-08-07 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mixing blade with removable wearing element
CN101855335A (en) * 2007-11-13 2010-10-06 克朗斯股份公司 Eccentric stirrer
CN101855335B (en) * 2007-11-13 2013-06-19 克朗斯股份公司 Eccentric stirrer
CN102513019A (en) * 2011-12-14 2012-06-27 常州市永益工具有限公司 Stirring blade
CN110917918A (en) * 2019-12-24 2020-03-27 安徽省春谷3D打印智能装备产业技术研究院有限公司 3D prints and uses ceramic raw material agitating unit

Also Published As

Publication number Publication date
ATE374648T1 (en) 2007-10-15
PL1477218T3 (en) 2008-02-29
EP1477218A3 (en) 2005-07-13
DE20307420U1 (en) 2003-07-03
DE502004005107D1 (en) 2007-11-15
EP1477218B1 (en) 2007-10-03
ES2294383T3 (en) 2008-04-01
DK1477218T3 (en) 2008-01-02

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