Beloit Technologies, Inc.

Other

Christopher J LaRiviere

Brian James Gallagher

Maurice P Bedard

A guide vane is provided in a pin fluffer to assist in pulp mat retention during fluffing by providing a cyclic lift component to the mat as it passes over the vane thereby also further increasing retention time obtained in the fluffer.

Apparatus for fluffing and contacting high consistancy wood pulp with a

A papermaking refiner has two stationary disks mounted to the support structure of a fixed housing. A rotating disk is mounted on a shaft which extends through the housing. The support structure allows stock to circulate on both sides of the disk support structure, thus balancing fluid pressures on both sides of the fixed disk and preventing thermal gradients for reduced deflection of the disks. The incoming stock is centrifugally accelerated in a shroud which separates and traps tramp metal or the like before the stock passes to the refiner disks. The shroud has passageways which allow the rotating fluid to enter a reservoir which surrounds the drive shaft and feeds the gaps between the rotor and the stationary plates.

Tangential discharge disk refiner

A rotor shaft extends axially through an interior cylinder defined by a housing. The shaft is mounted for rotation at one end. A flow of medium consistency stock is introduced axially to the cylinder, while a chemical inlet supplies bleaching chemicals axially to a rotor mounted on the shaft. The head of the rotor has turbine passages which accelerate the impinging bleaching chemicals along radial lines to be thus distributed across the whole aperture of the cylinder. Tapered vanes extend from the rotor adjacent to the rotor head and create circulating vortices which mix the bleach chemicals with the pulp. As the tapered vanes extend radially toward the cylindrical walls of the cylindrical housing, the vortices extend to the housing walls. The finely mixed bleaching chemicals and pulp are then forced through a foraminous cylinder which separates the interior of the cylindrical housing from an outlet volute by vanes which extend to near engagement with the foraminous cylinder. The foraminous cylinder has a porosity of about ten percent, the holes formed in the foraminous being on the order of one inch in diameter. The shear produced between by the radial vanes fluidizes the pulp and completely mixes the bleach chemicals and the pulp.

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Milford, NH, United States of America

Christopher J LaRiviere