Product metering is achieved by filling the flights of the
metering screw to their maximum capacity with uniformly dense
product. Particles are made mobile at the rear of the trough
by both the agitator and the metering screw as they begin
to convey the product forward. Due to the larger size and
the wire configuration of the agitator screw, it carries greater
capacity of material than the metering screw and allows material
to flow through and around it. The 360° influence of the
material forces entrained air up and out of the metering area
and at the same time force feeds material into the flights
of the metering screw.
As product approaches the forward section of the trough, the
conditioner screw, which is larger in diameter than the other
two screws and reversed pitch, controls all the material on
the outer edge of the agitator screw and forces it back. This
creates a folding action where the agitator and conditioner
screws meet allowing for the greatest mobility of material
immediately above the final three pitches of the metering
screw before entering the tube. Completely filled flights
of uniformly dense material now proceed into the tube and
continue on to the discharge point. The conditioner screw
also prevents jamming of material in the forward section of
the trough.
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| DB1 |
DB1C |
Sanitary |
DB1T |
DB1M |
Feeder
/ Conveyor |
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