Grain Cleaning & Hulling

The whole grain cleaning can be divided into three processes: dirty wheat processing, humidity controlling and clean wheat processing. The final clean wheat can be sent to flour milling system after these three cleaning processes.

Featured Grain Cleaning Plant: Lentil Hulling Production Line

Main Methods of Grain Cleaning Plant

  • Screening (different size): Remove impurities which are larger or smaller than wheat or other grain by sieving machine.
  • Air Separation (different floating velocity in air flow): Remove light impurities by air separator.
  • Gravity Grading (different specific gravity): Remove the inorganic impurity (stones and mud)havingsimilar size but different specific gravityby specific-gravity stoner.
  • Magnetic Separation(Different magnetism):Remove magnetic metals by magnetic selector.
  • Fine Selecting (different shapes): Remove round impurities which are shorter or longer than wheat by foreign seeds extractor.
  • Impacting (different strength): Crush the impurities with lower strength than wheat by wheat scourer, thus screen out these impurities.
  • Optical Analysis (different color): Remove impurities having different color with wheat by color selector.
  • Hulling / Peeling:Remove the peels of  grain such as wheat, corn, sorghum and beans (Soybean, black soya bean, broad bean, butter bean, kidney bean, navy bean, mung bean, small red bean, sword bean, pea, pigeon pea, cowpea, phaseolus coccineus, chickpea, lentil…)

wheat cleaning system
Wheat Cleaning Processing
This chart is greatly simplified wheat cleaning plant. The equipment, sequence, number and complexity of different operations vary for different grain.

vibrating sieve
vibrating sieve

This vibrating screen (wheat cleaning machine) is widely used for precleaning and cleaning of wheat milling, f...

rotary sieve
rotary sieve

This rotary sifter is common cleaning equipment for wheat or corn flour production plant. Corn flour manufactu...

gravity grading stoner
gravity grading stoner

Gravity grading stoner (grain cleaner) is one common kind of grain cleaning machine which is widely applied in...

magnetic selector
magnetic selector

Magnetic selector/separator for sale. It is ideal choice for grain processing production. Works well with maiz...

color sorting machine
color sorting machine

This color sorting machine (color selector) is common equipment for flour grinding. It is designed for photoel...

scourer
scourer

Wheat scourer/beater is needed to remove impurities such as dust, wheat hair, microorganism, worm eggs, mud on...

huller
huller

Grain huller is also named as dehuller, peeler and hulling machine.ABC Machinery have decades of experience in...

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