EP 1093392 A1 20010425 - MULTI-STAGE FILTERING DEVICE
Title (en)
MULTI-STAGE FILTERING DEVICE
Title (de)
MEHRSTUFIGE FILTERVORRICHTUNG
Title (fr)
DISPOSITIF DE FILTRAGE A PLUSIEURS ETAGES
Publication
Application
Priority
- DE 29804541 U 19980313
- EP 9901658 W 19990313
Abstract (en)
[origin: WO9947234A1] The invention relates to a filtering device, especially for cleaning dielectric operating fluids in spark erosion machines. Said device comprises at least one fine-filtering unit (7) which has an inlet (8) for the unfiltered fluid and an outlet (9) for the filtrate. Upstream of the fine-filtering unit a regenerable prefiltering unit (3, 45) is positioned, which comprises an inlet (2) for the unfiltered fluid, a filtrate outlet (4) connected to the unfiltered fluid inlet of the fine-filtering unit and an outlet (5) for impurities.
IPC 1-7
IPC 8 full level
B01D 29/15 (2006.01); B01D 33/067 (2006.01); B01D 36/02 (2006.01)
CPC (source: EP)
B01D 29/15 (2013.01); B01D 29/688 (2013.01); B01D 29/70 (2013.01); B01D 33/067 (2013.01); B01D 33/073 (2013.01); B01D 33/503 (2013.01); B01D 36/02 (2013.01)
Citation (search report)
See references of WO 9947234A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
DE 29804541 U1 19980520; EP 1093392 A1 20010425; TW 452519 B 20010901; WO 9947234 A1 19990923
DOCDB simple family (application)
DE 29804541 U 19980313; EP 9901658 W 19990313; EP 99907630 A 19990313; TW 88104004 A 19990315