Global Patent Index - EP 1257341 A1

EP 1257341 A1 2002-11-20 - METHOD AND DEVICE FOR PURIFYING LIQUIDS

Title (en)

METHOD AND DEVICE FOR PURIFYING LIQUIDS

Title (de)

VERFAHREN UND VORRICHTUNG ZUR REINIGUNG VON FLÜSSIGKEITEN

Title (fr)

PROCEDE ET DISPOSITIF POUR EPURER DES LIQUIDES

Publication

EP 1257341 A1 (DE)

Application

EP 01902231 A

Priority

  • CH 0100091 W
  • CH 2992000 A

Abstract (en)

[origin: WO0160493A1] The invention relates to a purification method for liquids (2) which are used in an almost closed circuit. According to the inventive method, the coarse components are deposited from the liquid in a first coarse filtering process (7) and the fine particles are removed from the liquid in a successive sedimentation process which is carried out in a liquid tank (8). The small particles which are present as a sediment and the coarse components are subsequently supplied to a fine filtering device (10) by means of a separate circuit. Said components are entirely removed from the liquid (2) in said device (10) and are advantageously developed as a compact mud concentrate that is easy to handle and dispose of. The purification method is particularly suitable for purifying cooling water which is used for cooling the tools in machine tools.

IPC 1-7 (main, further and additional classification)

B01D 21/00; B01D 21/24; B01D 21/26; B23Q 11/10; C02F 9/00; C10M 175/04

IPC 8 full level (invention and additional information)

B01D 21/00 (2006.01); B23Q 11/10 (2006.01); C10M 175/04 (2006.01)

CPC (invention and additional information)

B23Q 11/1069 (2013.01); B01D 21/0009 (2013.01); B01D 21/0012 (2013.01); B01D 21/245 (2013.01); B01D 21/34 (2013.01); C10M 175/04 (2013.01); B01D 21/262 (2013.01); C02F 2103/023 (2013.01)

Citation (search report)

See references of WO 0160493A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0160493 A1 20010823; AU 2994701 A 20010827; EP 1257341 A1 20021120

INPADOC legal status


2005-03-09 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040830

2002-11-20 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020805

2002-11-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-11-20 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI