Wedgewire pressure screen and method for making same

Details Wedgewire pressure screen and method for making same Wedgewire pressure screen and method for making same

B - Operations, Transporting

23

P

B23P 15/16 (2006.01) B01D 29/11 (2006.01) B01D 33/00 (2006.01) B07B 1/46 (2006.01) B07B 1/49 (2006.01) D21D 5/16 (2006.01)

Patent

CA 2326325

Methods of making a wedgewire pressure screen (10) and pressure screens made thereby. Spacers (14) are integrally formed on wedgewires (12) with the wedgewires grouped side by side in a flat arrangement. The wedgewires (12) are then flexibly secured to each other by a flexible bonding means such as a thin weld bead (20). The spacers (14) are used instead of discrete shims and abut against neighboring wedgewires (12) to thereby improve the dimensional accuracy of the slots (48) formed between adjacent wedgewires (12). The flexible panel is formed into a cylindrical shape via bending. End and support rings (84) are secured to the cylinder to form a cylinder screen basket.

Procédé servant à fabriquer un classeur sous pression (10) en fils métalliques profilés et classeurs sous pression fabriqués au moyen de ce procédé. On place des éléments d'écartement (14) de façon solidaire sur les fils métalliques profilés (12), ces derniers étant groupés à plat et côte-à-côte. On fixe ensuite souplement les fils métalliques profilés (12) les uns aux autres par des moyens de fixation souples, tels qu'une perle de soudure fine (20). On utilise les éléments d'écartement (14) à la place d'éléments de calage discrets et ils viennent en butée contre les fils métalliques profilés (12) avoisinants, ce qui permet d'améliorer la précision dimensionnelle des fentes (48) situées entre les fils métalliques profilés contigus (12). On incurve le panneau souple, de manière à obtenir une forme cylindrique. On fixe des anneaux d'extrémité et de support (84) au cylindre, de manière à obtenir un classeur sous forme de panier cylindrique.

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