| 摘要 |
<p>A comminution plant serving for comminuting material . The comminution plant comprises a set of fixed bottom knifes (12) separated by parallel opening (13), two parallel shafts (6) extending crosswise of the openings (13) , a set of upper knifes (10,11) attached on respective shafts (6) , the knifes extending partly into the openings (13, -18, 20) , and at least one drive assembly (9) for rotating the shafts (6) during operation. The upper knifes (10,11) on one of the two shafts (6) comprise a first upper knife (10) having a first diameter (D') and a second upper knife (11) having a second diameter (d') which is smaller than the first diameter (D') . The upper knifes (11,10) on the other of the two shafts (6) comprise a third upper knife (10) having a third diameter (D'') and a fourth upper knife (11) having a fourth diameter (d'') which is smaller than the third diameter (D'') . The first diameter (D') and third diameter (D'') together are of a size which is larger than twice the distance (a) between the axes of rotation (7) of the at least two shafts (6) . The comminution plant according to the invention can comminute a material effectively and to high degree of fineness.</p> |
