EP0976442A2 - Dispositif de mélange - Google Patents

Dispositif de mélange Download PDF

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Publication number
EP0976442A2
EP0976442A2 EP99114782A EP99114782A EP0976442A2 EP 0976442 A2 EP0976442 A2 EP 0976442A2 EP 99114782 A EP99114782 A EP 99114782A EP 99114782 A EP99114782 A EP 99114782A EP 0976442 A2 EP0976442 A2 EP 0976442A2
Authority
EP
European Patent Office
Prior art keywords
mixing device
wear
mixing
arms
bucket
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.)
Withdrawn
Application number
EP99114782A
Other languages
German (de)
English (en)
Other versions
EP0976442A3 (fr
Inventor
Franz Zettl
Stefan Dr. Zettl
Jorg Schwingel
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.)
F Zettl & Co GmbH
Original Assignee
F Zettl & Co GmbH
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
Priority claimed from DE29820936U external-priority patent/DE29820936U1/de
Application filed by F Zettl & Co GmbH filed Critical F Zettl & Co GmbH
Publication of EP0976442A2 publication Critical patent/EP0976442A2/fr
Publication of EP0976442A3 publication Critical patent/EP0976442A3/fr
Withdrawn legal-status Critical Current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
    • B01F27/07—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
    • B01F27/60—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

Definitions

  • the invention relates to a mixing device with a mixing drum and one the ends of the mixing drum mounted mixer shaft, the mixer shaft itself has radially outwardly extending blade arms, at the ends of which are close to Blades reaching to the mixing drum wall are arranged.
  • Such mixing devices are already known from the prior art. she are operated continuously or discontinuously. These are typical Solid mixers, which are also used as mixing granulators. In continuous Operation can process high mass flows with these mixers become. When processing high mass flows, however, those are from the mixer shaft outgoing bucket arms or the bucket blades with high wear protection exposed. This leads to the use of a common material to produce the mixing device for undesirable abrasions.
  • the object of the invention is therefore to provide a generic mixing device of this type to further develop that even with the processing of high mass flows with abrasive Material the service life of the entire mixing device can be increased.
  • the wear protection of the airfoils preferably consists of a Hard overlay welding from tungsten carbide, in particular from spherically melted Tungsten carbide.
  • support plates can be welded onto the free ends of the bucket arms to which the blades can be screwed.
  • the central axes of the airfoils can in relation to the associated airfoil arms be inclined at an angle.
  • the blade arms can each be wear-resistant by means of a casing surrounding them Sleeve. It is precisely through this measure that wear protection becomes the mixing device significantly increased. Basically, the bucket arm could can also be provided with wear protection itself. But this would cause the bucket arm to no longer have the necessary ductility would, which is necessary to absorb impact loads from rough parts that are in the mixing goods can be endured.
  • Wear-resistant Sleeve becomes the function of the wear-resistant surface on the one hand and the necessary Ductility of the bucket arm, on the other hand, ideally with one another united.
  • the sleeve can preferably be made of a weldable steel, for example one ST 37, consist of a hard overlay made of wear-resistant material, preferably made of spherically melted tungsten carbide.
  • these receiving sleeves can be used be welded into which the bucket arms can be inserted and where these are attachable.
  • the sleeve can be fixed on the respective bucket arm using clamping screws his.
  • the sleeve is According to a preferred embodiment, it is shorter than the free length of the Bucket arms, as they can be moved by loosening the respective clamping screws is. The sleeve can therefore be pushed back to disassemble the blades to release the lower edge of the airfoil.
  • a two-part and replaceable shaft protection sleeve can also be used be provided as wear protection for the mixer shaft.
  • the receiving sleeves for the bucket arms i.e. the so-called Bucket arm pockets to be armored using wear protection plates.
  • a protective roof can be realized.
  • the abrasive product falling from above is deflected in such a way so that it can no longer fall directly onto the mixer shaft.
  • this canopy in the filler neck is also made of wear-resistant material exist or be coated with wear-resistant material.
  • 1 shows a mixing device 22, which is formed by a mixing drum. Inside the mixing drum 22 extends centrally at the ends of the Mixing drum 22 mounted mixer shaft 23, which by means of its own motor M is drivable.
  • the mixing blades 25 also have airfoils, the central axes 26 opposite the associated blade arms 24 (i.e. their longitudinal extent) with an angle ⁇ forward, i.e. in the direction of movement, and are inclined upwards.
  • angle ⁇ forward, i.e. in the direction of movement, and are inclined upwards.
  • the blade arm 24 consists of a ductile steel, for example an ST 52.
  • the bucket arm has a sufficiently high ductility to withstand blows Endure coarse parts in the mix.
  • the airfoil 38 has a hard overlay weld made of spherically melted tungsten carbide on Falls die Blade 38 are worn, they can be easily screwed to the Support plate 36 are replaced.
  • a wear-resistant sleeve 40 is mounted on the blade arm 24 . This can be done using clamping screws 42, 44 be determined.
  • the wear-resistant sleeve is made of a ductile steel that has a hard surfacing of tungsten carbide.
  • the sleeve 40 is dimensioned somewhat shorter than the length of the bucket arm 24. This allows the sleeve 40 from its normal Operating position, as shown in Fig. 5, in an exchange position, as it 4 is shifted. In the replacement position according to Fig. 4, the sleeve 40 releases the lower edge of the airfoil 38 so that the airfoil 38 is removable from the support plate 36.
  • the mixer shaft 23 is also surrounded with wear protection.
  • the wear protection is characterized here by exchangeable shaft protection sleeves 54 Special steel formed. These shaft protection sleeves serve to protect the mixer shaft 23 against abrasive wear.
  • shovel arm pockets 58 into which those not shown in FIG. 6 are shown Bucket arms 24 can be used are in the embodiment shown here provided with wear protection plates 50 and 52.
  • the shaft protection sleeves 54 are placed around the shaft 23, with cutouts 56 one Allow bucket arm pockets 58 to pass through.
  • a screw connection is made with armored screws 60.
  • the protective sleeves are secured against twisting 54 through the shovel pockets 58.
  • Buckets of screwed wear protection 50 and 52 of the bucket pocket 58 has elongated holes so that they are adjustable against the shaft protection sleeve 54 and prevent relative movements to the mixer shaft 23.
  • the bucket arm pocket 58 is also in the rear Area occupied. Therefore here is corresponding to the wear protection 50 in the front area also a wear plate 52 in the rear area executed.
  • FIG. 7 shows a front view of the mixing device according to the invention. From this illustration it can be seen that in the filler neck 29 a tapered Canopy 80 is executed in the mine of the filler neck is arranged that it is the mixer shaft 23, which is arranged in the mixing drum 22 is foreclosed. Thus, the wearing end filled through the filler neck 29 Product be distracted so that it is no longer directly on the mixer shaft 23 falls.
  • the canopy 80 can also be made of wear-resistant material consist.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accessories For Mixers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP99114782A 1998-07-31 1999-07-28 Dispositif de mélange Withdrawn EP0976442A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE29813742 1998-07-31
DE29813742U 1998-07-31
DE29820936U 1998-11-23
DE29820936U DE29820936U1 (de) 1998-07-31 1998-11-23 Mischvorrichtung

Publications (2)

Publication Number Publication Date
EP0976442A2 true EP0976442A2 (fr) 2000-02-02
EP0976442A3 EP0976442A3 (fr) 2002-06-05

Family

ID=26061719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114782A Withdrawn EP0976442A3 (fr) 1998-07-31 1999-07-28 Dispositif de mélange

Country Status (1)

Country Link
EP (1) EP0976442A3 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1149631A1 (fr) * 2000-04-28 2001-10-31 Heissenberger & Pretzler Ges.m.b.H. Fixation d'outil pour tambour de coupe rotatif
EP1365853A1 (fr) * 2000-07-28 2003-12-03 David Little Melangeur thermocinetique, compositions et produits structurels
CN100515645C (zh) * 2007-04-20 2009-07-22 青铜峡铝业集团有限公司 混捏机动搅刀的焊接工艺
MD163Z5 (ro) * 2009-12-24 2010-10-31 Институт Сельскохозяйственной Техники "Mecagro" Malaxor pentru condiţionarea în flux a biomasei
WO2014000733A1 (fr) * 2012-06-26 2014-01-03 Krauskopf Gerhard Support d'outil mélangeur équipé de palettes mélangeuses interchangeables
CN103817068A (zh) * 2014-03-02 2014-05-28 苏州信文食品有限公司 一种粉类食品混合滚动过筛机
CH708182A1 (de) * 2013-06-10 2014-12-15 Axpo Kompogas Engineering Ag Rührwerkwelle eines Fermenters und Befestigungsverfahren von Rührarmen.
WO2019086116A1 (fr) * 2017-11-02 2019-05-09 Ammann Schweiz Ag Mélangeur de matériaux de construction
US10456758B2 (en) 2016-04-08 2019-10-29 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mixing shaft
EP3608014A1 (fr) 2018-08-07 2020-02-12 Pioonier GmbH Mélangeur thermocinétique destiné au mélange à l'état fondu des produits déchets en matière plastique
WO2020048929A1 (fr) * 2018-09-03 2020-03-12 Detloff GmbH Malaxeur à bras
WO2021155875A1 (fr) 2020-02-04 2021-08-12 Reimund Dann Mélangeur thermocinétique pour mélanger à l'état fondu des déchets de plastique

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2226756A1 (de) * 1972-06-02 1973-12-20 Habermann Kg A Armschoner fuer die tragarme von ruehrschaufeln
DE2608283A1 (de) * 1976-02-28 1977-09-08 Adam Karp Fluegel eines mischers
GB2126491A (en) * 1982-07-06 1984-03-28 Elba Werk Maschinen Gmbh & Co Mixing machine
US5030519A (en) * 1990-04-24 1991-07-09 Amorphous Metals Technologies, Inc. Tungsten carbide-containing hard alloy that may be processed by melting
DE4235298A1 (de) * 1992-10-20 1994-04-21 Krupp Polysius Ag Verfahren zum Herstellen einer Mahlwalze
DE4243664A1 (de) * 1992-12-23 1994-06-30 Verschleis Technik Dr Ing Hans Mischerarm für einen Mischer, insbesondere für die Baustoffindustrie
WO1996022950A1 (fr) * 1995-01-24 1996-08-01 Voest-Alpine Industrieanlagenbau Gmbh Procede de recyclage de poussieres produites lors de la reduction de minerai de fer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2226756A1 (de) * 1972-06-02 1973-12-20 Habermann Kg A Armschoner fuer die tragarme von ruehrschaufeln
DE2608283A1 (de) * 1976-02-28 1977-09-08 Adam Karp Fluegel eines mischers
GB2126491A (en) * 1982-07-06 1984-03-28 Elba Werk Maschinen Gmbh & Co Mixing machine
US5030519A (en) * 1990-04-24 1991-07-09 Amorphous Metals Technologies, Inc. Tungsten carbide-containing hard alloy that may be processed by melting
DE4235298A1 (de) * 1992-10-20 1994-04-21 Krupp Polysius Ag Verfahren zum Herstellen einer Mahlwalze
DE4243664A1 (de) * 1992-12-23 1994-06-30 Verschleis Technik Dr Ing Hans Mischerarm für einen Mischer, insbesondere für die Baustoffindustrie
WO1996022950A1 (fr) * 1995-01-24 1996-08-01 Voest-Alpine Industrieanlagenbau Gmbh Procede de recyclage de poussieres produites lors de la reduction de minerai de fer

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1149631A1 (fr) * 2000-04-28 2001-10-31 Heissenberger & Pretzler Ges.m.b.H. Fixation d'outil pour tambour de coupe rotatif
EP1365853A1 (fr) * 2000-07-28 2003-12-03 David Little Melangeur thermocinetique, compositions et produits structurels
EP1365853A4 (fr) * 2000-07-28 2004-11-10 David Little Melangeur thermocinetique, compositions et produits structurels
CN100515645C (zh) * 2007-04-20 2009-07-22 青铜峡铝业集团有限公司 混捏机动搅刀的焊接工艺
MD163Z5 (ro) * 2009-12-24 2010-10-31 Институт Сельскохозяйственной Техники "Mecagro" Malaxor pentru condiţionarea în flux a biomasei
EP2864027B1 (fr) 2012-06-26 2016-08-03 Krauskopf, Gerhard Support d'outil mélangeur équipé de palettes mélangeuses interchangeables
WO2014000733A1 (fr) * 2012-06-26 2014-01-03 Krauskopf Gerhard Support d'outil mélangeur équipé de palettes mélangeuses interchangeables
CH708182A1 (de) * 2013-06-10 2014-12-15 Axpo Kompogas Engineering Ag Rührwerkwelle eines Fermenters und Befestigungsverfahren von Rührarmen.
WO2014198666A1 (fr) * 2013-06-10 2014-12-18 Axpo Kompogas Engineering Ag Arbre agitateur d'un fermentateur et procédé de fixation de bras d'agitation
CN103817068A (zh) * 2014-03-02 2014-05-28 苏州信文食品有限公司 一种粉类食品混合滚动过筛机
US10456758B2 (en) 2016-04-08 2019-10-29 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mixing shaft
WO2019086116A1 (fr) * 2017-11-02 2019-05-09 Ammann Schweiz Ag Mélangeur de matériaux de construction
EP3608014A1 (fr) 2018-08-07 2020-02-12 Pioonier GmbH Mélangeur thermocinétique destiné au mélange à l'état fondu des produits déchets en matière plastique
WO2020048929A1 (fr) * 2018-09-03 2020-03-12 Detloff GmbH Malaxeur à bras
WO2021155875A1 (fr) 2020-02-04 2021-08-12 Reimund Dann Mélangeur thermocinétique pour mélanger à l'état fondu des déchets de plastique

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Publication number Publication date
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