It belongs to axes flow with high speed circulation and little cut force. It uses baffles or draft tube to make axes more strength circulation ,applies on mixture, transfer- heat And soluble liquids. Sanitary grade equipments must must reduce dead Corners and be easy to clean, so it does not suit for adding baffles and draft tube. Huarongdingchang designs off- centre installation that solve axes flow and intense turbine and rotation agitation causes.