| 摘要 |
1319979 Air classifier WEDAG WESTFALIA DINNENDAHL GROPPEL AG 24 June 1970 [24 June 1969] 30632/70 Headings B2H and B2P [Also in Division F4] In an air circulation sifter of the kind in which the material (e.g. cement) to be sifted is fed to a scatter plate in a sifter housing 1 into the lower part of which sifting air is blown from an impellor 5, carrying the fine part of the material to cyclones 4 where it is deposited, additional air intakes 7 are provided to admit cooling air to the air current and entrained fines issuing from the sifter. Excess air is taken off at 8 at the outlet from the blower and passed to a filter. |
