| 摘要 |
The sieve device (2) has at least two sieve elements (4), one lying on the other, having a number of sieve holes (8), which combine, depending on the relative position of the sieve elements, to form common sieve apertures (10). The sieve apertures of the sieve device have different hole sizes in the feed direction, and/or different hole sizes are formed by adjusting the relative position of the sieve elements. |
