EP 1086270 A1 20010328 - SCREEN CYLINDER STRESS CONCENTRATION RELIEF
Title (en)
SCREEN CYLINDER STRESS CONCENTRATION RELIEF
Title (de)
SIEBZYLINDER MIT SPANNUNGSKONZENTRATIONSVERMINDERUNG
Title (fr)
RELAXATION DE LA CONCENTRATION DES CONTRAINTES DANS UN CYLINDRE TAMISEUR
Publication
Application
Priority
- CA 9900533 W 19990608
- US 8836998 P 19980608
Abstract (en)
[origin: WO9964664A1] A screen cylinder, and a method of making the screen cylinder, take into account the stress concentrations that are formed, particularly at the inner and outer surfaces of the finished screen cylinder, so as to minimize them. The stress relief minimization is accomplished by providing a plurality of stress relief grooves (25) in land areas (121) between accept flow providing grooves (113) that are in substantially end-to-end alignement, the stress relief grooves each having a depth between about 10-80 % (e.g. between about 40-60 %) of the thickness dimension (119) of the plate (110), so as to reduce by at least 10 % (e.g. about 30-50 %) the magnitude of deformation of the screen slots (115) due to compression or tension in the surfaces of the screen cylinder as a result of cylinder formation from the plate, compared to if the relief grooves were not present.
IPC 1-7
IPC 8 full level
B01D 29/11 (2006.01); B01D 39/00 (2006.01); D21D 5/16 (2006.01)
CPC (source: EP)
D21D 5/16 (2013.01)
Citation (search report)
See references of WO 9964664A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9964664 A1 19991216; AU 4127099 A 19991230; CA 2334572 A1 19991216; EP 1086270 A1 20010328; JP 2002517314 A 20020618
DOCDB simple family (application)
CA 9900533 W 19990608; AU 4127099 A 19990608; CA 2334572 A 19990608; EP 99924621 A 19990608; JP 2000553651 A 19990608