| 摘要 |
Disclosed is an assembly for processing wood chips with a novel blade profile which allows wood chips to be packed to high density. The profile may be a stepped profile with a plurality of sections forming a rotationally forward face. Neighbouring sections are non-collinear and at least one of the sections is parallel to a rotational axis. The profile may include a generally centrally disposed first section of greater than or equal to one quarter of a relevant dimension; a third section of greater than or equal to one eighth of the relevant dimension; a second dimension disposed between the first section and a third section and non-collinear with the third section; with the sections disposed relative to the rotational axis in advantageous positions. The profile may be such that second and third sections of the blade have approximately equal longitudinal extents, but the tilt-angle-weighted surface of the second section is substantially less than the third tilt-angle-weighted surface area of the third section.
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