Grader machines are used for
grading mainly grains as per length, width size, immature grain, broken
sizes, etc. The grains of similar granularity and texture are removed by
the machine which make their further processing easier. The grader
machine comes in various sizes, grading capacities and models.
Features :
Grader machine has the following features :
- Strong machines with stainless steel construction.
- The grains are feeded through feed hopper with feed control
gate.
- The nylon brushes clear the sieve perforation clogging.
- Sieves are changeable with large surface screening area.
- It also consists of dust collector, air trunk, surge bin and
feeding elevator.
How does a Grader Operates?
Reception hopper receives the grains or seeds from where they are
evenly distributed by a feed roller and drop the grains and the seeds on
the top of the sieve. The grains are subjected to the aspirator fan
which clears the dust, straw, chaff etc. After being cleared by the fan
, the grains fall on the top screen. According to the width and
thickness, the grains passed to the different layers of the sieves.
There is a mechanism to clear the sieve perforation. While passing
through the screen, the grains again pass through air sifter and
aspirator where remaining light particles are cleared. The dust
particles and other impurities are collected through separate openings.
