単流式サイクロン型粒子選別器の性能について(第1報)

概要

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Hitherto, many attempts to use an ordinary cyclone as a sieve for the classification of coarse and fine dust particles are found failure, as many fine particles will be separated with in the coarse. Our newly designed cyclone type classifier consists of the multistage upside down type cyclone using the air separating method by the upward air current and connecting in series to an ordinary type cyclone. Air borne feed is introduced in the upward direction into the multistage cyclone inlet. Here, the air current is changed to the whirl by the guide vanes so as to produce a cyclonic whirl. The tangential velocity of the rising air whirl increases, the dia. of inner exhaust pipe decreases. The coarse particles separate out into the lower separating chamber, while the finer particles collect into the individual upper chamber according to their sizes, and the finest is carried away in the outgoing air to ordinary type cyclone. Tests were carried out using the various kinds of dust particles, but in this paper, we present a test result concerning to the cement powder which is passed through a sieve of 200 mesh Tyler standard screen. To analize the sizing of the classified dust particle, we offered a new separating and classifing charactreistic curve instead of the weight frequency curve of the dust particle.
一般社団法人日本機械学会の論文
1953-09-15