EP1663465B1 - Mischwelle zur durchmischung und zerteilung von lebensmittelprodukten - Google Patents

Mischwelle zur durchmischung und zerteilung von lebensmittelprodukten Download PDF

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Publication number
EP1663465B1
EP1663465B1 EP04762574A EP04762574A EP1663465B1 EP 1663465 B1 EP1663465 B1 EP 1663465B1 EP 04762574 A EP04762574 A EP 04762574A EP 04762574 A EP04762574 A EP 04762574A EP 1663465 B1 EP1663465 B1 EP 1663465B1
Authority
EP
European Patent Office
Prior art keywords
mixing shaft
mixing
steel core
coating
elongated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04762574A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1663465A2 (de
Inventor
Franz Koop
Gerhard Brockmann
Regina Hermann
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.)
Stephan Machinery GmbH
Original Assignee
Stephan Machinery 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
Application filed by Stephan Machinery GmbH filed Critical Stephan Machinery GmbH
Priority to PL04762574T priority Critical patent/PL1663465T3/pl
Publication of EP1663465A2 publication Critical patent/EP1663465A2/de
Application granted granted Critical
Publication of EP1663465B1 publication Critical patent/EP1663465B1/de
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
    • 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
    • B01F27/053—Stirrers characterised by their elements, materials or mechanical properties characterised by their materials
    • 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
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
    • 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
    • B01F27/053—Stirrers characterised by their elements, materials or mechanical properties characterised by their materials
    • B01F27/0531—Stirrers characterised by their elements, materials or mechanical properties characterised by their materials with particular surface characteristics, e.g. coated or rough
    • 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
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/211—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts characterised by the material of the shaft

Definitions

  • the present invention is concerned with a mixing shaft for mixing and dividing food products in an aggregate, in particular with a plastic coating on the stainless steel core of the mixing shaft.
  • mixing shafts are known in the art from DE 88 04 492.0 known.
  • the well-known mixing shaft has a smooth, round steel core, on the surface of which a casing is applied, which has flattened areas at various points, which serve for the non-rotatable attachment of mixing elements.
  • the mixing shafts are usually installed in a heating unit of a continuously producing digester, in which water-quality steam is injected through nozzles into the food products, such as processed cheese, soups, sauces.
  • the mixing shafts are rotated at turns of 300 to 3,000 revolutions per minute in the food product. To ensure optimum condensation of the water vapor on the product particles and thus optimum heating ensure the product must be cut by means of the mixing shaft in order to obtain the largest possible surface.
  • the mixing shafts known in the prior art consist of a stainless steel core, over which a plastic coating is applied by various methods and sealed with sealing rings.
  • the structured mixing shaft according to the invention for mixing and dividing food products into an aggregate is characterized in that a steel core with a structured surface is surrounded by a coating, the coating having mixing elements integrated in the coating.
  • the method for producing a coating on the surface of a steel core of a mixing shaft for mixing and dividing food products in an aggregate by means of a known processing method for applying PTFE to surfaces is characterized in that on the structured surface of the steel core at isostatic pressure ( p) and elevated temperatures (T) a coating with mixing elements is applied.
  • the coating is a so-called PTFE (polytetraethylene) or a ceramic material.
  • the steel core is made of stainless steel.
  • the elongated cylinder portion of the mixing shaft has at one end a flange with which the mixing shaft is supported on the other working tools of the unit.
  • the mixing unit has a product chamber, in the chamber wall advantageously at least one injection nozzle is arranged through which a water vapor is injected in drinking water quality.
  • the plastic coating is pressed isostatically at high pressures of 300 to 350 bar, then sintered at temperatures of 360 ° C to 380 ° C and then machined. After the plastic coating has been applied to the steel core of the mixing shaft, it is advantageous to polish the surface of the plastic coating.
  • mixing elements are part of the coating.
  • the cylindrical portion of the mixing shaft has elongated grooves and elevations whose corners and edges are rounded, wherein the widths of the grooves and elevations are approximately equal.
  • the Fig. 1 shows a perspective schematic representation of the unit 2, in which the mixing shaft 1 according to the invention is installed.
  • the mixing shaft will be described below.
  • the mixing shaft 1 has at its one end another working tool 8, on which the entire shaft is supported.
  • the steel core 3 has a fastening screw 16, with which the mixing shaft 1 is pressed against the working tool.
  • In the walls 10 of the product unit 2 at least one injection nozzle 11 is arranged, are injected with the arbitrary means in the interior of the product unit 2.
  • the mixing shaft 1 is driven with revolutions between 300 to 3,000 revolutions per minute.
  • the Fig. 2 shows a perspective view of a partial sectional view of the mixing shaft according to the invention 1.
  • the mixing shaft 1 consists essentially of an elongated cylindrical steel core 3, which is surrounded by a plastic coating 6.
  • the steel core 3 has a bore 17 in the center, in which a bolt 18 is guided with a thread, not shown here, with which the mixing shaft 1 is pressed with a screw 16 against the working tool.
  • Both the surface of the flange and the entire cylindrical portion 7 of the steel core 3, with the exception of the end faces 19, are surrounded by a single plastic coating 6.
  • the surface of the plastic coating 6 itself is structured and has, in the present exemplary embodiment, radially projecting mixing elements 4 whose distances (A) are different and are distributed over the entire surface circumference of the mixing shaft 1 quasi irregular.
  • the coating 6 is in the present embodiment, a so-called PTFE (polytetrafluoroethylene), which is isostatic pressed at a relatively high pressure and sintered at temperatures between 360 ° C and 380 ° C. Because of the different coefficients of expansion of plastic and steel, air gaps are generally formed at the boundary surfaces 20 between the coating and the steel core, in which product residues penetrate and can no longer be removed.
  • the surface of the steel core 3 is executed structured.
  • the structure of elongated grooves 12 and elongated protrusions 13 is formed over a part of the cylindrical portion of the steel core 3.
  • the depth of the grooves is about 2 mm and the widths of the grooves 12 and the elevations are between 6 mm and 10 mm.
  • the grooves 12 terminate shortly before the end face of the cylindrical portion 7 of the mixing shaft 1, whereby an additional slip resistance for the plastic coating 6 is given. Further, for some embodiments, it is advantageous to roughen the entire surface, with the exception of the end faces, of the cylindrical portion of the mixing shaft 1, whereby the plastic coating can penetrate into the pores of the roughening.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Seeds, Soups, And Other Foods (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
EP04762574A 2003-08-02 2004-08-02 Mischwelle zur durchmischung und zerteilung von lebensmittelprodukten Expired - Lifetime EP1663465B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04762574T PL1663465T3 (pl) 2003-08-02 2004-08-02 Mieszadło do mieszania i rozdrabniania artykułów spożywczych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10335552A DE10335552B4 (de) 2003-08-02 2003-08-02 Mischwelle zur Durchmischung und Zerteilung von Lebensmittelprodukten sowie Verfahren zur Herstellung eines Überzugs für eine derartige Mischwelle
PCT/DE2004/001729 WO2005014152A2 (de) 2003-08-02 2004-08-02 Mischwelle zur durchmischung und zerteilung von lebensmittelprodukten

Publications (2)

Publication Number Publication Date
EP1663465A2 EP1663465A2 (de) 2006-06-07
EP1663465B1 true EP1663465B1 (de) 2008-02-27

Family

ID=34129481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04762574A Expired - Lifetime EP1663465B1 (de) 2003-08-02 2004-08-02 Mischwelle zur durchmischung und zerteilung von lebensmittelprodukten

Country Status (6)

Country Link
US (1) US8833688B2 (pl)
EP (1) EP1663465B1 (pl)
AT (1) ATE387257T1 (pl)
DE (2) DE10335552B4 (pl)
PL (1) PL1663465T3 (pl)
WO (1) WO2005014152A2 (pl)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1841327T3 (da) 2005-01-28 2011-03-14 Unilever Nv Spiselige dispersioner indeholdende olie og strukturmiddel
DE102010023793A1 (de) 2010-06-15 2011-12-15 J. F. Knauer Industrie-Elektronik Gmbh Vorrichtung und Verfahren zum Einmischen von Konditioniermittel, insbesondere Flockmittel, in Schlämme
KR101040927B1 (ko) 2011-03-30 2011-06-16 (주)플록마스터 슬러지 파쇄용 믹스장치
CN103363813B (zh) * 2013-06-20 2014-11-12 宁波长振铜业有限公司 具有自动捣料搅拌装置的熔炼装置
WO2015142959A1 (en) * 2014-03-17 2015-09-24 Sani-Tech West, Inc. Magnetic mixing system and method
US11103245B2 (en) * 2018-12-31 2021-08-31 Cilag Gmbh International Knife for surgical stapler and associated method of manufacture with MIM and hip
DE102019125593A1 (de) * 2019-09-24 2021-03-25 Thomas Molé Modular aufgebautes Mischwerkzeug

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
US2852238A (en) * 1957-08-19 1958-09-16 Toms River Cincinnati Chemical Agitator for lined pressure vessel
DE1944828U (de) * 1966-07-01 1966-08-25 Ver Leichtmetallwerke Gmbh Mischtrommel.
US3622129A (en) * 1969-05-14 1971-11-23 Bellco Glass Inc Magnetic stirrer apparatus
DE8021396U1 (de) * 1980-08-09 1980-12-04 Bohlender, Hermann, 6970 Lauda Ruehrwelle fuer ruehrwerke zur labormaessigen behandlung aggressiver medien
DE3332403A1 (de) * 1983-09-08 1985-03-28 Robert 5446 Engeln Wolff Ruehrer als vorsatzgeraet fuer heimwerkermaschinen, z. b. bohrmaschinen, zum durchmischen von fluessigkeiten, suspensionen oder dgl.
US4651935A (en) * 1984-10-19 1987-03-24 Morehouse Industries, Inc. Horizontal media mill
DE3723558A1 (de) * 1987-07-16 1989-01-26 Netzsch Erich Holding Muehle, insbesondere ruehrwerksmuehle
DE8804492U1 (de) * 1988-04-05 1988-07-07 Polytetra Draack + Meyer Gmbh, 4050 Moenchengladbach Rührer
DE9116859U1 (de) * 1991-02-15 1994-04-07 Stephan & Soehne Vorrichtung zur Herstellung von Schmelzkäse
DE4208100C2 (de) * 1992-03-13 1994-05-26 Mtu Muenchen Gmbh Rohling zur Herstellung von faserverstärkten Beschichtungen oder Metallbauteilen
DE4328160C2 (de) * 1992-10-23 1994-10-20 Reifenhaeuser Masch Schneckenwelle einer Schneckenstrangpresse und Verfahren zur Herstellung einer solchen Schneckenwelle
CH688849A5 (de) * 1993-02-25 1998-04-30 Buehler Ag Ruehrwerksmuehle.
DE19530026A1 (de) * 1995-08-16 1997-02-20 Werner & Pfleiderer Schneckensatzelement für Schneckenmaschinen
DE19544871C2 (de) * 1995-12-01 1998-02-26 Hoechst Ag Verfahren zur Herstellung und Aufarbeitung von fluorhaltigen organischen Verbindungen
DE69939784D1 (de) * 1998-08-06 2008-12-04 Eidgenoess Tech Hochschule Schmelzverarbeitbares polytetrafluorethylen
JP4156807B2 (ja) * 1999-06-01 2008-09-24 エラン ファーマ インターナショナル，リミティド 小型ミル及びその方法
US6999432B2 (en) 2000-07-13 2006-02-14 Microsoft Corporation Channel and quality of service adaptation for multimedia over wireless networks
WO2002009458A2 (en) 2000-07-24 2002-01-31 Bluesocket, Inc. Method and system for enabling seamless roaming in a wireless network

Also Published As

Publication number Publication date
DE502004006334D1 (de) 2008-04-10
WO2005014152A2 (de) 2005-02-17
ATE387257T1 (de) 2008-03-15
US8833688B2 (en) 2014-09-16
US20070125894A1 (en) 2007-06-07
DE10335552B4 (de) 2005-07-28
EP1663465A2 (de) 2006-06-07
WO2005014152A3 (de) 2005-04-21
DE10335552A1 (de) 2005-03-17
PL1663465T3 (pl) 2008-10-31

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