Vertical Agitators

The James Brinkley Company vertical agitators are two or three times more efficient than side insert agitators.  This is because vertical units are large propellers operating at low speeds, providing more pumped flow for the same horsepower.  Vertical agitators also avoid a stuffing box, which is the significant problem in side insert units. 

Vertical agitators are sized by the tons of stock in the vessel to be mixed and its consistency.  The larger the volume to be mixed, at higher consistency, the larger the unit required.  We must also know the service, or degree of agitation.  If tank height to diameter ratio exceeds 1.5:1, multiple propellers are required.  Vertical agitator propellers must also have a diameter to tank diameter ratio generally not less than 0.3.  In tanks with vertical agitators, if the tank width to length ratio exceeds 1.5:1, multiple agitators may be required.

Each agitator has its own momentum characteristic determined by propeller diameter, RPM, blade pitch and efficiency.  However agitator testing is done in water, since velocity cannot be observed in stock.  Water is a uniform Newtonian fluid.  Stock is not…so agitator “efficiency” determined in water may not be meaningful in stock.

The James Brinkley Company believes in flexibility, both of the present unknowns and future uncertainties.  For this reason, Brinkley uses adjustable pitch blades on all units over 36” in diameter and offers them as an option on smaller units.

For vertical agitator features, click here.

 

Other agitators:

Side Insert Agitators

Cross Shaft Agitators