Fin, stirring shaft and tubular reactor

A fin comprises a T-like fin body with a liquid facing surface and a liquid backing surface, the T-like fin body comprises a root portion and an end portion, and the end portion comprises an expandingportion expanding from the joint of the end portion and the root portion to the two sides. The fin disclosed by the utility model can be used for fully refining materials during stirring, and can beused for strengthening the mixing effect. The utility model also provides a stirring shaft with the fin and a tubular reactor with the stirring shaft. 一种翅片，包括具有迎液面和背液面的类T型翅片本体，所述类T型翅片本体包括根部和端部，所述端部包括自所述端部与所述根部的连接处向两侧扩张的扩张部。本实用新型的翅片在搅拌时能够对物料进行充分细化，并能够强化混合效果。还提供了具有上述翅片的搅拌轴及具有前述搅拌轴的管式反应器。