Suction roll sealing strip cleaning structure and method

D - Textiles – Paper – 21 – F

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92/21.5

D21F 3/10 (2006.01)

Patent

CA 1062521

SUCTION ROLL SEALING STRIP CLEANING STRUCTURE AND METHOD ABSTRACT OF THE DISCLOSURE A SELF-CLEANING SUCTION ROLL ASSEMBLY OF THE TYPE COM- PRISING A GENERALLY CYLINDRICAL SHELL HAVING AN OUTER RADIAL SURFACE, AN INNER RADIAL SURFACE AND PERFORATIONS FORMED IN THE SHELL EXTENDING FROM THE OUTER RADIAL SURFACE TO THE INNER RADIAL SURFACE. THE ASSEMBLY INCLUDES A PLURALITY OF SEALING ELEMENTS FOR FORMING A PRESSURE CHAMBER OR COMPARTMENT WITH THE INNER SUR- FACE OF THE SHELL, AGAINST WHICH SUCH SEALING ELEMENTS ARE IN ENGAGEMENT IN THE OPERATION OF THE ASSEMBLY. THE CYLINDRICAL SHELL IS PROVIDED WITH RECESS OR RECESSES FORMED ON THE INNER SURFACE ACROSS THE LENGTH THEREOF WHEREBY FIBERS AND OTHER DELETERIOUS MATERIAL WHICH MANAGE TO PASS THROUGH THE PERFORA- TIONS MAY BE CONTINUOUSLY SWEPT INTO SUCH RECESS OR RECESSES AND CARRIED OUT OF THE PRESSURE CHAMBER OR COMPARTMENT AND WASHED OUT IN NORMAL OPERATION OF THE ASSEMBLY SO THAT SUCH FIBERS AND OTHER MATERIAL WILL NOT ACCUMULATE AGAINST THE SEALING ELEMENTS INSIDE THE PRESSURE CHAMBER OR COMPARTMENT.

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