Pulper for circulating a fibrous stock suspension
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United States of America Patent
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Jun 18, 2024
Grant Date -
Feb 4, 2021
app pub date -
Oct 21, 2020
filing date -
Apr 23, 2018
priority date (Note) -
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Abstract
A pulper for circulating a fibrous stock suspension. The pulper includes at least one screen, having a screen surface which is provided with screen openings, and over which a rotor passes. The rotor is formed by a rotor head, to which a plurality of rotor blades are attached on the outer circumference. The rotor circle of the screen, which is passed over by the rotor wings, includes a plurality of bar-shaped elevations. In the process, pulping is to be improved, while wear is to be minimized, in that the angle of intersection between the working edge of the rotor blades pointing in the direction of rotation and the shear edge of the elevations pointing counter to the direction of rotation does not decrease radially outwardly.
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