EP0737775A2 - Disque ou segment de disque pour raffineurs à disques - Google Patents

Disque ou segment de disque pour raffineurs à disques Download PDF

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Publication number
EP0737775A2
EP0737775A2 EP96890067A EP96890067A EP0737775A2 EP 0737775 A2 EP0737775 A2 EP 0737775A2 EP 96890067 A EP96890067 A EP 96890067A EP 96890067 A EP96890067 A EP 96890067A EP 0737775 A2 EP0737775 A2 EP 0737775A2
Authority
EP
European Patent Office
Prior art keywords
disc
elevations
segment
disk
grinding
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Withdrawn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
EP96890067A
Other languages
German (de)
English (en)
Other versions
EP0737775A3 (fr
Inventor
Peter Benedikt jun. Müller
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.)
Peter Mueller Gesmbh & Co Kg
Original Assignee
Peter Mueller Gesmbh & 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 Peter Mueller Gesmbh & Co Kg filed Critical Peter Mueller Gesmbh & Co Kg
Publication of EP0737775A2 publication Critical patent/EP0737775A2/fr
Publication of EP0737775A3 publication Critical patent/EP0737775A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills
    • D21D1/306—Discs

Definitions

  • the invention relates to a disc or disc segment for disc mills, in particular for treating fiber suspensions, with discrete elevations provided on their grinding surfaces, the elevations having a rounded surface, in particular elevations with a spherical or ellipsoidal section profile.
  • Disks or disk segments for the treatment of fiber suspensions, with discrete elevations provided on their grinding surfaces are e.g. from AT-PS 393 520 known, metal carbide particles are embedded in an essentially cubic form in the grinding surface as discrete elevations.
  • Such abrasive discs have found their way into refiner technology, but they produce e.g. Fiber aggregates with a roughened surface, which gives a high digestion rate, but is not always desirable.
  • a grinding wheel for grinding devices is known in which a large number of hard material particles with a spherical or ellipsoidal shape are embedded in the surface layer of the grinding wheel. These grinding devices serve to grind foodstuffs, organic materials, minerals or the like into fine powder; a treatment of fiber suspensions is not provided.
  • the object of the present invention is the development of a disk or a disk segment for disk mills, in particular for treating fiber suspensions, of the type mentioned at the beginning.
  • the elevations are formed in one piece with the disk or the disk segment or with a support plate connected to the disk or the disk segment.
  • the grinding surfaces with the discrete elevations are formed in one piece with a cast body, in particular investment cast body, forming the disk body or the disk segment or a support plate thereof.
  • the maximum height of the elevations is preferably up to about 8 mm.
  • the height of the elevations decreases inwards from the disk periphery.
  • a further embodiment of the invention is characterized in that suction grooves for the fiber suspension are provided on the grinding surface.
  • These suction grooves can be radially curved and / or have a curved cross-sectional profile, in particular a circular arc section profile.
  • the disks or disk segments according to the invention can be arranged on only one of the corresponding grinding surfaces, but also on both of them, the elevations on the corresponding disks or segments then being arranged in radially concentric rows offset from one another.
  • the other grinding surface is usually a surface equipped with ribs.
  • the disks or disk segments or disk pairs according to the invention are suitably produced by casting, in particular investment casting, a hard material layer optionally being applied to the grinding surface.
  • a further development of this manufacturing process is characterized in that support plates provided with the elevations, in particular cast in relation to the thickness of the pane body or pane segment, are optionally reworked and, in particular subsequently, are connected to, preferably prefabricated, panes or pane segments, which are also can be poured.
  • the latter method is mainly used when high precision is required.
  • fiber suspensions can be ground to fiber aggregates with a smooth surface and high elasticity.
  • Fig. 1 shows a plan view of a disc segment
  • Fig. 2 shows a preferred embodiment of the grinding surface.
  • An edge zone 2 is provided on the disk segment 1, which represents a grinding surface and on which discrete elevations with a rounded surface are provided.
  • suction grooves 3 for the fiber suspension which run radially curved.
  • the bottom of these channels is preferably not flat, but curved, so that the intake ducts have a non-rectangular cross-sectional profile, in particular an arc section profile.
  • the grinding surface is formed on a cast body 4 which has discrete elevations 5 on its surface, the height of which decreases from radially outside RA to radially inside R1.
  • the elevations 5 are arranged side by side in concentric rows.
  • This embodiment is provided as one of two corresponding grinding surfaces, the elevations of which each protrude into spaces 6 between the rows of elevations of the other grinding surface.
  • the reference number 7 shows a hard material coating arranged on the grinding surface.

Landscapes

  • Treatment Of Fiber Materials (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP96890067A 1995-04-13 1996-04-10 Disque ou segment de disque pour raffineurs à disques Withdrawn EP0737775A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT207/95U 1995-04-13
AT20795 1995-04-13

Publications (2)

Publication Number Publication Date
EP0737775A2 true EP0737775A2 (fr) 1996-10-16
EP0737775A3 EP0737775A3 (fr) 1998-01-28

Family

ID=3484338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96890067A Withdrawn EP0737775A3 (fr) 1995-04-13 1996-04-10 Disque ou segment de disque pour raffineurs à disques

Country Status (1)

Country Link
EP (1) EP0737775A3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT502541B1 (de) * 2005-08-04 2008-01-15 Andritz Ag Maschf Platte oder plattensegment sowie vorrichtung mit derartigen platten oder plattensegmenten
RU2409719C1 (ru) * 2009-06-29 2011-01-20 Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный технологический университет" Размалывающая гарнитура для дисковой мельницы
CN111270543A (zh) * 2020-02-27 2020-06-12 安德里茨（中国）有限公司 磨浆机磨盘、磨浆机转子以及具有此磨浆机磨盘的磨浆机
WO2022058760A1 (fr) * 2020-09-18 2022-03-24 Gela Sulaberidze Procédé de production de son de blé alimentaire et dispositif pour sa réalisation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646728A (en) * 1946-10-25 1953-07-28 Curlator Corp Apparatus for treating wood pulp
AT363774B (de) * 1977-05-31 1981-08-25 Vyzk Ustav Papieru Celulozy Vorrichtung zum mahlen faseriger suspensionen
DE3808765A1 (de) * 1988-03-16 1989-09-28 Voith Gmbh J M Einrichtung zur zerlegung und aufloesung von fasermaterial

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT502541B1 (de) * 2005-08-04 2008-01-15 Andritz Ag Maschf Platte oder plattensegment sowie vorrichtung mit derartigen platten oder plattensegmenten
RU2409719C1 (ru) * 2009-06-29 2011-01-20 Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный технологический университет" Размалывающая гарнитура для дисковой мельницы
CN111270543A (zh) * 2020-02-27 2020-06-12 安德里茨（中国）有限公司 磨浆机磨盘、磨浆机转子以及具有此磨浆机磨盘的磨浆机
WO2022058760A1 (fr) * 2020-09-18 2022-03-24 Gela Sulaberidze Procédé de production de son de blé alimentaire et dispositif pour sa réalisation

Also Published As

Publication number Publication date
EP0737775A3 (fr) 1998-01-28

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