| 摘要 |
PURPOSE:To make assembly easy by providing a rotatable hollow shaft in a tank, said shaft having a blade attachment opening which is connected with the hollow part of the shaft, and further providing the shaft with a stirring blade. CONSTITUTION:A rotatable hollow shaft 10 is provided in a tank. A stirring blade 20 is inserted into a hollow part 11 of the shaft 10, and then a blade part 21 is protruded from the shaft 10 through a blade attachment opening 12 into the inside of the tank. While the stirring blade is being held in this state, a stud bolt and nut 23 are tightened from the side of the hollow part 11 of the shaft 10, whereby the blade par 21 is fixed on the shaft 10 through a boss 22. Owing to this construction, the blade-fixing procedure can be simplified. |
