| 摘要 |
<p>746,353. Sifting apparatus. AKTIESELSKABET VOLUND. July 19, 1954, No. 21006/54. Class 117. Apparatus for sifting townwaste comprises a first drum sieve 1 by which the smaller pieces are removed, the residue being damped by a water spray 14 and passing to a second drum sieve 2, coupled to the first sieve 1, and having arms 6 which break up the larger pieces, the final residue passing through adjustable openings 11. The beating arms 6 may revolve in the opposite direction to the sieve 2 or may be stationary. The spray 14 preferably emerges from the beater driving shaft 7. Iron is preferably removed 93 initially by magnetic means.</p> |
