D - Textiles – Paper – 21 – B
Patent
D - Textiles, Paper
21
B
92/38
D21B 1/12 (2006.01) D21B 1/34 (2006.01)
Patent
CA 1069362
Docket 6140 PULPING APPARATUS FOR LIQUID SLURRY STOCK Abstract Of The Disclosure A rotor for a pulper for liquid slurry stock includes a rotor body provided with circumferentially spaced composite vanes, each of which includes a defibering portion and a pumping-portion. The defibering portion constitutes the outer end portion of each vane and is of relatively small axial dimensions. The pumping portion constitutes the upper portion of each composite vane and is of substantially greater axial dimensions with its upper surface of convex airfoil shape. The leading face of each pumping portion is essentially plane and inclined forwardly to overhang the trailing edge of the adjacent pumping portion and define therewith a groove in which the stock is channeled for forced centrifugally outward flow. In the preferred embodiment, the rotor cooperates with a frustoconical extraction plate, and the defibering vane portions have their undersurfaces inclined to match the inclination of the extraction plate and are proportioned to extend fully across the extraction plate.
300183
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