| 摘要 |
PROBLEM TO BE SOLVED: To provide an attachment excellent in agitation efficiency by cooperation between an outside agitation blade and an inside agitation blade, and without requiring labor for installing or forming the inside agitation blade.SOLUTION: The attachment includes a rotary shaft 2 connected to a driving device and a plurality of agitation blades 3 installed on the rotary shaft 2, and at least one agitation blade 3 comprises a main agitation blade 8 formed in a half-annular shape and an auxiliary agitation blade 9 extending in a height width range of its main agitation blade 8 from the main agitation blade 8 and forming the agitation action by rotating together with the main agitation blade 8 on the inside of its main agitation blade 8 when rotating, and desirably, a height width of the auxiliary agitation blade 9 is smaller than a height width of the main agitation blade 8, and further desirably, the auxiliary agitation blade 9 exists only in a lower half part of the main agitation blade 8. |
