STIRRER

摘要

Provided is a stirrer provided with a stirred tank that contains an object to be stirred, a stirring shaft rotatably attached within the stirred tank, and a stirring impeller attached to the stirring shaft. The stirring impeller has blades, and each blade has a blade body and a groove that opens in a rotational direction. The groove extends in a direction intersecting a direction passing through a rotation radius centered on the axial center of the stirring shaft.