EP 0903183 B1 20021211 - Apparatus for reducing and crushing coarse material
Title (en)
Apparatus for reducing and crushing coarse material
Title (de)
Vorrichtung zum Zerkleinern und Brechen groben Materials
Title (fr)
Appareil de fragmentation et de concassage de gros matériaux
Publication
Application
Priority
NL 1007069 A 19970918
Abstract (en)
[origin: EP0903183A1] An apparatus for reducing and crushing coarse material comprises at least two rollers (3,4) in side-by-side substantially parallel relation which can be driven such that material supplied from above is discharged downwards between the rollers. Provided on the rollers are ribs which effect a reduction and crushing of the material supplied. The ribs of a first one of these rollers (3) are formed by two screw threads (8,9) having opposite leads for conveying material that is fed substantially centrally above the rollers laterally outwards in either direction, while the ribs of the second one (4) of these rollers are formed by oval disks (10) which are obliquely provided around the roller and which, when the roller is driven, perform a reciprocating movement, viewed in axial direction, causing a shearing and clearing movement between the oval disks (10) and the screw threads (8,9). <IMAGE>
IPC 1-7
IPC 8 full level
B02C 18/14 (2006.01); B02C 19/22 (2006.01)
CPC (source: EP)
B02C 18/142 (2013.01); B02C 19/22 (2013.01); B02C 2018/147 (2013.01)
Designated contracting state (EPC)
AT BE CH DE IT LI
DOCDB simple family (publication)
EP 0903183 A1 19990324; EP 0903183 B1 20021211; AT E229374 T1 20021215; DE 69810044 D1 20030123; DE 69810044 T2 20030925; NL 1007069 C2 19990322
DOCDB simple family (application)
EP 98203133 A 19980917; AT 98203133 T 19980917; DE 69810044 T 19980917; NL 1007069 A 19970918