| 摘要 |
PURPOSE:To eliminate the need of a feed-out value and to accomplish uniform feeding of grain by providing a lower spiral transfer device with a spiral having uniform outer peripheral diameter and space formed between the inner periphery and a shaft in such a manner as to become narrower toward the downstream below a drying path in a circulating grain drier. CONSTITUTION:The outer peripheral edge of a spiral blade 9b of a lower spiral transfer device 9 has the same diameter extending from the transfer start end to the transfer terminal end, and a space is formed between the peripheral edge of the lower spiral blade 9b and a lower spiral shaft 9a in such a manner as to gradually become narrower. In this arrangement, the transfer amount of grain of the lower spiral blade 9b gradually increases with the transfer so as to let grain flow down from the lower portion of a drying path substantially uniformly. |
