| 摘要 |
Sieving machine with at least one sieving screen which can be caused to vibrate by a vibrator, in which a vibrator acting on the frame of the sieve is fitted in each zone affected by the feed and the discharge of the material, and in which these vibrators have different frequencies and amplitudes which vary inversely with their respective frequencies. In particular, the frequencies of the vibrations at the inlet and outlet of the machine are in the ratio of 1 : 2 while their amplitudes are in the ratio of 3 : 1. |
