EP 1362643 A1 20031119 - Apparatus and method to screen materials having different sizes and/or density
Title (en)
Apparatus and method to screen materials having different sizes and/or density
Title (de)
Verfahren und Vorrichtung zur Trennung von Materialien unterschiedlicher Grösse und/oder Dichte
Title (fr)
Procédé et dispositif pour la séparation de matériaux de différentes dimensions et/ou densités
Publication
Application
Priority
IT UD20020105 A 20020516
Abstract (en)
Apparatus to screen materials (11) having different sizes and/or density, comprising a plurality of screening rollers (16) arranged parallel to each other and each having the outer surface shaped in such a manner as to define a plurality of protruding elements (22) alternated to corresponding grooves (24). The screening rollers (16) are arranged in such a manner that the protruding elements (22) of each roller are inserted, more or less deeply, into the grooves (24) of an adjacent roller. The screening rollers (16) define a screening plane which is divided into one or more fractions (F1, F2, F3), one adjacent to the other, in each of which the relative screening rollers (16) are separated from each other so as to define a gap (25) of a determinate value, different from that of the other fractions. In the field of each of the fractions (F1, F2, F3) at least one screening roller (16a) has the protruding elements (22) reduced, beveled or rounded so as to obtain zones (30) with a section of passage which is locally greater, without varying the interaxis between the screening rollers (16a) and hence the gap (25). <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
B07B 1/15 (2013.01); D21B 1/023 (2013.01)
Citation (search report)
- [A] WO 9840173 A1 19980917 - PAL S R L [IT], et al
- [A] EP 0727293 A1 19960821 - SUNDS DEFIBRATOR LOVIISA OY [FI]
- [A] DE 95784 C
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1362643 A1 20031119; IT UD20020105 A0 20020516; IT UD20020105 A1 20031117
DOCDB simple family (application)
EP 03010771 A 20030514; IT UD20020105 A 20020516