| 摘要 |
PURPOSE:To accomplish stirring sufficiently in a short time by inserting a stirring shaft into a discharging hole having a small diameter at the top of a drum and providing stirring blades, which are freely revolvable in the horizontal and vertical direction in the drum, to the stirring shaft. CONSTITUTION:A stirring shaft 3 is inserted through a discharging hole 2 having a small diameter at the top of a drum 1, and stirring blades 4 which are revolvable freely in the horizontal and vertical direction in the drum, are attached to the stirring shaft 3. Namely, when the stirring blades 4 are brought to a vertically arranged attitude and the stirring shaft 3 is inserted through the discharging hole 2 and the stirring shaft 3 is revolved, the stirring blades are spread in the horizontal direction by the centrifugal force. Therefore, stirring is possible with a relatively large stirring blades even if the diameter of the discharging hole is small. Thus, the stirring efficiency is improved, and sufficient stirring is accomplished in a short time. |
