| 摘要 |
<p>A refiner for refining material has a refiner disc arrangement whereby the outermost opposed refiner disc annuli (12, 14) have a particular corresponding refiner surface arrangement. A carrier element (30) has a mounting surface, a central axis, and defines a plane generally perpendicular to its axis of rotation. An annular first disc (12) is carried on the mounting surface concentrically relative to the central axis and has a first refiner surface facing outward relative to the mounting surface. A plurality of refiner bars protrudes axially from and extends generally radially along the refiner surface. A second carrier element (32) is spaced from and confronts the first carrier element (30) and has a second mounting surface thereon. An annular second disc (14) is carried on the second mounting surface concentrically relative to the central axis and has a second refiner surface confronting the first refiner surface. A plurality of second refiner bars protrudes axially from and extends generally radially along the second refiner surface. A refining plane (90) is defined between the first and second refining surfaces (12, 14) that is angled relative to the generally perpendicular plane (42) and provides a generally consistent width refining gap over a substantial portion of the refining surfaces.</p> |
