Types of Impellers or Mixers used in Paints Industry 1 ~ Archie Paint

Types of Impellers or Mixers used in Paints Industry 1

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The mixers usually consists of mixing tank, usually vertical, and one or more impeller(s) driven by electrical motor, the mixing tank may also have vertical baffles. The impeller consists of a shaft assembled with one or more mixing blades propellers. Propellers can be divided into two main types, axial and radial flow propellers.

Figures (1-6) show axial flow propellers, the type shown in Figure (1) is considered the most common type in paints industry. The impeller in figure (4)is fixed in the wall of mixing tank with suitable inclination, it can be also fixed vertically at the axis of mixing tank using vertical baffles.

Such impellers rotate at speeds between 1150-1750 rpm. The vertical type shown in Figure (5)usually rotate at speeds between 350-420 rpm via gearbox and it is used in preparing colloids. The inclined high-speed type is used for the preparation of emulsions. The type shown in Figure (6), which fixed in the side of mixing tank, is used in mixing solid particles free liquids.