EP 0795359 A3 19980311 - Air classifier
Title (en)
Air classifier
Title (de)
Sichter
Title (fr)
Séparateur pneumatique
Publication
Application
Priority
AT 48696 A 19960314
Abstract (en)
[origin: EP0795359A2] The prepared wood fibres are dropped into the sieve system via shredding rollers (12) from where they drop into a hopper. An upper airflow (2) and a lower airflow (3) together blow the fibres up out of an exit duct (4) while larger debris and impurities eg. metals, drop into a sump (13) from where they are ducted out of the hopper. The airflows are recycled, with a small amount of make-up air. The upper airflow is via a gridded structure (14) to spread the flow. The grid is angled to lift the airborne fibres. The shredding rollers are in a rising array with the rotation in the same direction, to move the particles of the slope.
IPC 1-7
IPC 8 full level
B07B 4/02 (2006.01); B07B 11/04 (2006.01); B07B 11/06 (2006.01); B27N 1/00 (2006.01)
CPC (source: EP)
B07B 4/02 (2013.01); B07B 11/04 (2013.01); B07B 11/06 (2013.01); B27N 1/00 (2013.01)
Citation (search report)
- [X] DE 583680 C 19330907 - RUDOLF LESSING
- [X] US 4465194 A 19840814 - COLEMAN G A JOHN [US]
- [A] WO 9205882 A1 19920416 - FLAEKT AB [SE]
- [AD] DE 4112556 C1 19920617
- [AD] EP 0491278 A2 19920624 - LUEBKE GMBH [DE]
Designated contracting state (EPC)
AT DE ES FR GB IT
DOCDB simple family (publication)
EP 0795359 A2 19970917; EP 0795359 A3 19980311; EP 0795359 B1 20010718; AT 403133 B 19971125; AT A48696 A 19970415; AT E203191 T1 20010815; DE 59704052 D1 20010823; ES 2161434 T3 20011201
DOCDB simple family (application)
EP 97890007 A 19970115; AT 48696 A 19960314; AT 97890007 T 19970115; DE 59704052 T 19970115; ES 97890007 T 19970115