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US 4,223,847 AGranted
Coaxial feeder
AssigneeThe Bauer Bros. Co.
InventorsLawrence Tantalo, Robert H. Traver, William E. Lyons
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AssigneeThe Bauer Bros. Co.
InventorsLawrence Tantalo, Robert H. Traver, William E. Lyons
Estimating the term…
A coaxial feeder for connection to the inlet of a disc refiner includes a channel defining means which contains a bladed screw the blade of which has a relatively short axial length and is housed to position coaxially of the discs, to which it feeds material for refining purposes, and in concentric spaced relation to the wall structure which bounds said channel. The material to be refined is introduced to the down side of the screw blade. At the outer periphery of the blade, at the lowermost limit of its travel, is a bar or plate-like control device which is substantially coextensive with the blade and arranged to specifically direct material to the space between the discs of the related refiner with minimal interference or disruption. The control device presents a surface to the material moved on the down side of the screw blade which effectively inhibits bypass of material to the upside of the blade, having regard for the direction of its rotation in use. The arrangement assures a relatively free backflow of steam from the refiner discs along the upside portion of the blade, to vent to an expansion chamber rising vertically of the screw, which chamber houses means for controlling the inflow of material to the down side of the screw blade in a generally bypassing relation to any significant portion of the backflowing vented steam.
In combination with a disc refiner wherein one disc rotates relative another with their disc refining surfaces in an opposed relatively closely spaced relation, said refiner having an inlet thereto, one of said discs being an infeed disc positioned adjacent said inlet and having at least one passage for delivery therethrough of the material to be refined, received by way of said inlet and passing therefrom to the space between the opposed refining surfaces, and said infeed disc being connected to and driven by a shaft, infeed apparatus comprising means connecting to the inlet of the disc refiner defining a channel aligning with the inlet and accommodating the projection therethrough of said drive shaft, continuous blade means connecting with and projected from said shaft at the end of the shaft immediately preceding the face of said infeed disc and control means positioned within said channel at the outer peripheral limit of said blade means to direct material moved by said blade means to enter the related disc refiner and said delivery passage of its infeed disc in an area substantially coinciding with a predetermined position of the delivery passage during rotation of said infeed disc.
A disc refiner installation comprising a housing, a pair of refiner discs within said housing one of which rotates relative the other with their disc refining surfaces in an opposed relatively closely spaced relation, said housing having an inlet thereto, said one of said discs being an infeed disc positioned adjacent said inlet, said infeed disc including a plurality of delivery passages which are circularly spaced, said infeed disc being connected to and driven by a shaft for rotation thereof, means defining a channel in connection with said housing through which said shaft extends to said infeed disc, continuous blade means connected with and projected from said shaft at the end thereof immediately preceding said infeed disc and control means positioned within said channel, said control means being constructed and arranged to substantially limit the path of material moved to said refiner by said blade means for refining so that such material is directed to the lowermost portion of said infeed disc, having regard for its orientation in use, and to cause the material to move into each of said delivery passages in the course of substantially its lowermost position during rotation of said infeed disc.
In combination with a disc refiner wherein at least one refining disc rotates relative another, in an opposed adjacent relation thereto, said refiner having an inlet thereto for the material to be refined to pass to said discs for refining, means defining a channel constructed and arranged to connect to the inlet of the refiner, said channel defining means accommodating therein a shaft connected to and for rotation of one of said discs, blade means on said shaft locating adjacent and extending substantially to the end of said channel connecting to the refiner inlet and control means positioned within said channel, outwardly of said blade means, to locate substantially along the portion of the interior surface of said means defining the channel which positions lowermost in use, said control means being so constructed and arranged to direct the material advanced by said blade means to said inlet as to enter and pass through the inlet adjacent the lowermost limit thereof.
Dependencies are inferred from the claim text.