Stirrer used in chemical industry, for mixing material, has agitating head that is arranged at the lower end of the shaft, and the casing and the agitating head that are enclosed by the shaft

摘要

The stirrer has a shaft (w) that is provided with an upper end and a lower end (wu). The agitating head (r) is arranged at the lower end of the shaft. The agitating head and the casing (h) are enclosed by the shaft. The shaft is connected to the casing through fattener (o) or the agitating head. The fastener is located at the agitating head such that the casing is pushed during assembly of the impeller through the shaft.