| 摘要 |
The screen has a feed device (37) at one front end of the drum rotating around its longitudinal axis, and an outlet (30) for conditioned material at the other. The second front end lies in a circular area with ring filter sections of differing mesh widths, 5,10,20,30 mm, surrounding the drum. There are silos (38) underneath the drum to receive filter material of different particle size. At the second end of the drum, there is a stationary collection area (30), in which either grainy material from above (33) or conditioned material (39) from inside the drum passes. At the bottom of the collection area (30), there is an opening, which can be shut by a flap (31), linked to another silo (36). Beside the collection area, the drum is shaped as a radially wider space (34) with shovels (32) to lift and transport the grainy material to the ring filter sections.
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