Dairy Ingredients for Food Processing

110 Chapter 4

ment, the speed of agitation, tank geometry,

vortex creation, air incorporation, and shear-

ing effects impact the mixing effi ciency.

Many types continuous mixing systems,

also called in - line mixers, are available. In

devices such as the Tri - Blender and Breddo

Another type of batch mixing occurs in
tanks and silos. The tanks are equipped with
paddle, propeller, or scraped surface agita-
tors. The agitators can be positioned at the
top or bottom, perpendicular, or centrally
mounted. In addition to the type and place-

Figure 4.9. Reconstitution in a system with a venturi; the dry ingredients are added at the discharge side of
the pump.

TANGENTIAL

INLET RECIRCULATION

PUMP

RECIRCULATION LINE

RECONSTITUTION

TANK

VENTURI

UNIT

A G I TATO R

WATER

WATER METER

POWDER

SCREEN

HOPPER

ISOLATING

VALVE

DUPLEX

FILTER

RECONSTITUTED

MILK TO THE CHILLER

POWDER

WATER

VENTURI UNIT (SCHEMATIC)

RECONSTITUTED

MILK

Figure 4.8. Mixing dry ingredients using a triblender.

5

8

6

33

SMP WATER

WATER FROM

RECIRCULATING LINE

4

RECONSTITUTION WITH TRIBLENDER

POWDER

ELECTRICALLY

CONTROLLED SHUT-OFF

VALVE

IMPELLER RECONSTITUTED MIX

BELT DRIVE