| 摘要 |
<p>A method of grinding and screening wooden materials (M) is disclosed, using a grinder (1) comprising a container (2) in which the materials to be ground (M) are received and provided near the bottom (2a) with one or more screws (3, 4) having on their spirals (7, 8, 9, 10) peripheral cutting elements (11) cooperating with grinding blades (12) fixed inside the container (2). The screening operation of the material (M) occurs during the grinding process when the material (M) is passing through the gaps (19) defined between the grinding blades (12) and the spirals (7, 8, 9, 10) of the screws (3, 4). The container (2) at the lower part below said screws (3, 4) is provided with free space allowing the ground material (T) to fall down by gravity.</p> |
