Arc blade spiral stirrer

The utility model discloses an arc-blade spiral stirrer. The problem of high power of the existing large-scale tank stirring equipment is mainly solved. The blade is characterized in that the blade is of a spiral structure and comprises a root portion (21) and an end portion (22), the root portion and the end portion are in smooth transition, the included angle beta formed by the root portion and the horizontal plane ranges from 25 degrees to 40 degrees, the included angle alpha formed by the end portion and the horizontal plane ranges from 5 degrees to 14 degrees, the root portion is an arc-shaped face with a downward opening, and the inner diameter R of the root portion is 0.3-0.35 time of the length of the blade. According to the arc-blade spiral stirrer, the blades of the stirrer are of an arc-shaped and compression-molded spiral structure, so that a good effect is achieved in the aspect of reducing fluid resistance, low energy consumption, large liquid discharge amount and a good mixing effect are achiev