| 摘要 |
<p>The separator has a canal-like section (14) including a transporting unit (18) transported from an input to a grading region (10) along heavy and light particles (22, 24) to be classified. A closure unit (26) is arranged in and/or on the canal-like section. The closure unit is perpendicularly moved towards a transporting direction and arranged in such a manner to overlie with a section of a transporting material. The closure unit is provided with a cylindrical body (28) and a circular piston ring, and is made of steel.</p> |
