Defoaming mixer is mainly used to eliminate a large amount of foam covering the liquid surface. Its working principle is also to produce a centrifugal effect under high-speed rotation, the center sucks in the foam, and then returns to the centre and throws the materials. It has the advantages of low shear, low circulation, low energy consumption, convenient installation and disassembly, etc. It is a defoaming agitator that can also have a good defoaming effect in a non-vacuum environment.