Cassava grater is a compact,
convenient and useful machine for scratching or grating cassava. The
main components of cassava grater are molded drum, feeder bin and exit
channel. Molded drum is made up of metal usually aluminum whereas feeder
bin and exit channel is made up of heavy-duty galvanized steel sheet
metal.
The graters are available in different sizes and capacities. Cassava
grater comes in two versions- mobile & stationary. Mobile grater has
a motor wheel which facilitates movement.
On the basis of their sizes and functions cassava graters are of
different types :
- Pedal grater
Pedal cassava grater is made from galvanized iron tubing, spare
bicycle parts, hacksaw blades and sheet metal. Cassava is fed into
the hopper and grated by a vertical disc with grating slits that is
rotated by pedal power.
- Manual grater
The manual grater is normally made up of galvanized metal sheet
with raised jagged flange on the underside. Here the cassava pieces
are pressed against the jagged side of the metal and rubbed
vigorously with strong downward movements. The jagged side of the
metal on which the cassava pieces are pressed is fixed on a wooden
frame.
- Disc grater
Manual disc grater consists of circular punched metal plate which
is mounted vertically against a stationary feed tray which also
serves as a housing unit. Cassava tuber is pressed against the
grating surface by rotating handle which is mounted on it. To ensure
a fine uniform product the clearance between the plate and the side
of the feed tray is maintained. Grated cassava is collected in a
feed tray.
- Motor grater
Motor grater uses electric or diesel and petrol engines. The motor
grater normally is made from hard-wearing materials, including
galvanized sheet metal, precision bearings, and modern
petrol/electric engines. The roller is made of hardwood wrapped with
the grating plate, which is a perforated flat metal sheet. Roots are
fed through hopper. Cassava after being pressed by the rollers are
conveyed to the collection box through an inclined chute.
