Small blade high speed agitators

Radial flow pattern produced by a flat blade turbine 

Processing considerations sometimes necessitate deviations from the standard configuration. 

Agitator tip speeds uT given by equation 5.3 are commonly used as a measure of the degree of agitation in a liquid mixing system. 

Tip speed ranges for turbine agitators are recommended as follows  

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Small blade high speed agitators are used to mix low to medium viscosity liquids. Two of the most common types are the six-blade flat blade turbine and the marine type propeller shown in Figures 5.1 and 5.2 respectively. Flat blade turbines used to mix liquids in baffled tanks produce radial flow patterns primarily perpendicular to the vessel wall as shown in Figure 5.3. In contrast marine type propellers used to mix liquids in baffled tanks produce axial flow patterns primarily parallel to the vessel wall as shown in Figure 5.4. Marine type propellers and flat blade turbines are suitable to mix liquids with dynamic viscosities up to 10 and 50 Pa s, respectively. 

Agitators with a small blade area which rotate at high speeds. These include turbines and marine type propellers. 

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