초록 ▼

An apparatus and method for screening wood pulp and other fibrous fluid suspensions. The apparatus and method relate to rebuildable, modular screen cylinders for screening thick pulp slurry in pulp and paper applications. The screen sections of the modular screen cylinder of the present invention ar

An apparatus and method for screening wood pulp and other fibrous fluid suspensions. The apparatus and method relate to rebuildable, modular screen cylinders for screening thick pulp slurry in pulp and paper applications. The screen sections of the modular screen cylinder of the present invention are of a nonwelded construction. A lap joint according to the present invention is provided in each screen section connecting the ends of the individual sections when the screen sections are rolled into cylindrical shape. As a result, the lap joint of the current invention provides for a nonwelded, modular screen cylinder which is less expensive to manufacture and provides for increased wear life and durability as compared to similar screen baskets previously known.

대표청구항 ▼

[ We claim:] [1.] A modular pulp slurry screen cylinder assembly for use in screening pulp slurry, the pulp slurry to be screened being fed to one side of said screen cylinder assembly, with some of the pulp slurry flowing through said screen cylinder to the opposite side thereof, said modular scree

[ We claim:] [1.] A modular pulp slurry screen cylinder assembly for use in screening pulp slurry, the pulp slurry to be screened being fed to one side of said screen cylinder assembly, with some of the pulp slurry flowing through said screen cylinder to the opposite side thereof, said modular screen cylinder assembly comprising:a cylindrically-shaped, rolled metallic screen section having openings therethrough and a front end and a back end; said cylindrically-shaped screen section further comprising top and bottom portions, said top and bottom portions having groove ears;rigid cylindrical end rings disposed at opposite ends of said modular screen cylinder, said end rings having grooves therein, said grooves being adapted for receiving said respective groove ears in said cylindrically-shaped screen section;a nonwelded and axially-extending lap joint formed from said front end and said back end of said cylindrically-shaped screen section connecting said front end and said back end of said screen section; andwherein said cylindrically-shaped screen section is formed of a single sheet.