EP 2283971 A1 20110216 - SCALE REMOVING METHOD AND SCALE REMOVING DEVICE
Title (en)
SCALE REMOVING METHOD AND SCALE REMOVING DEVICE
Title (de)
VERFAHREN ZUR BESEITIGUNG VON ABLAGERUNGEN UND VORRICHTUNG ZUR BESEITIGUNG VON ABLAGERUNGEN
Title (fr)
PROCÉDÉ DE DÉTARTRAGE ET DISPOSITIF DE DÉTARTRAGE
Publication
Application
Priority
- JP 2009055744 W 20090324
- JP 2008079439 A 20080326
Abstract (en)
A scale removing apparatus 7 in accordance with the present invention subjects the internal surface of the steel pipe 3 to a blasting process wherein abrasive particles (not shown) are ejected through a high-pressure jet nozzle 2 and collide with the internal surface of the steel pipe 3. The scale removing apparatus 7 has the high-pressure jet nozzle 2 for ejecting the abrasive particle, a dust collector 4 for collecting dust particles after blasting, and restraining means 6 for restraining air from flowing into the steel pipe 3 from an end part of the steel pipe 3 due to the flow of abrasive particle ejected through the high-pressure jet nozzle 2. Therefore, the scale can be removed without scattering of dust particles into the atmosphere even with a low-capacity dust collector.
IPC 8 full level
B24C 3/32 (2006.01); B24C 3/16 (2006.01); B24C 9/00 (2006.01)
CPC (source: EP US)
B24C 1/086 (2013.01 - EP US); B24C 3/325 (2013.01 - EP US); B24C 9/003 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2283971 A1 20110216; EP 2283971 A4 20140319; BR PI0910400 A2 20150929; BR PI0910400 A8 20190129; CN 101980834 A 20110223; JP 4400761 B2 20100120; JP WO2009119540 A1 20110721; US 2011065363 A1 20110317; WO 2009119540 A1 20091001
DOCDB simple family (application)
EP 09725423 A 20090324; BR PI0910400 A 20090324; CN 200980110791 A 20090324; JP 2009055744 W 20090324; JP 2009513490 A 20090324; US 88709210 A 20100921