(19)
(11) EP 2 422 881 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.04.2014 Bulletin 2014/17

(43) Date of publication A2:
29.02.2012 Bulletin 2012/09

(21) Application number: 11171173.5

(22) Date of filing: 23.06.2011
(51) International Patent Classification (IPC): 
B02C 4/06(2006.01)
B02C 4/28(2006.01)
 B02C 4/08(2006.01)
B02C 4/30(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 23.08.2010 FI 20100362 U

(71) Applicant: Aimo Kortteen Konepaja Oy
84100 Ylivieska (FI)

(72) Inventors:
  • Rautakoski, Joonas
    FI-84100 Ylivieska (FI)
  • Koskela, Vesa
    FI-85800 Haapajärvi (FI)

(74) Representative: Vanhala, Jorma Kalevi et al
Berggren Oy Ab Sepänkatu 20
90100 Oulu
90100 Oulu (FI)

   


(54) Disc roller mill


(57) The disc roller mill has a squeezing unit for squeezing granular feed raw material. The squeezing unit has two parallel rotatable disc rollers (68a, 68b), between which there is a gap, wherein the feed raw material to be squeezed can be led. The disc rollers have an axis (70a, 70b) and a number of discs (80) fitted around the axis. The discs have an inner part (84) in the direction of the normal to the surface of the axis and an outer edge (88). Between the inner part and the outer edge there is a squeezing surface (86), which substantially has the shape of a cut-off cone. The squeezing surface of the discs can be substantially smooth or it can have grooves substantially in the direction of the radius of the disc.







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Search report