送風選別風路の形状に関する研究 (第1報)

選別用ディフューザおよび空気室の設計と効果

抄録

In order to improve separating performance in pneumatic grain casing, the authors studied and experimented air velocities and separation of grains in the casing having a diffuser, which was theoretically shaped and was combined with an air chamber. Results of our study are as follows;
(1) The diffuser casing gave a uniform air speed distribution and the effect of separation was increased. The optimum angle of diffuser divergence was 6-8°.
(2) The air chamber attached further raised, the effectiveness of the diffuser.
(3) We recognized a correlation between the air speed deviation and the separating efficiency of grains.