Grain Cleaning Machine Function, Working Principle and Classification

Grains are always mixed with various impurities, such as clod, pebble, sand and grass in harvesting, transportation and storage. Before grain processing, we need to clean grains by grain cleaning machine. If not, it will affect the end products quality, damage human health, or even affect the subsequent processing equipment performance.

GRAIN CLEANING MACHINE is designed according to different impurities. And the granular material, such as cereals, beans and coffee, are always mixed with clod and metal.

To remove these impurities, we designed different grain cleaning machines, such as destoner machine, weeding machine and iron removing machine. Now, let’s introduce these grain cleaning machines.

Destoner machine is used to remove sand and pebble. Its common cleaning method is screening and gravity. Screening method removes sand and pebble according to sand and pebble shape, size and the processing material by sieve pit. Gravity destoner machine utilizes the different gravity between sand and grains, and removes impurities under continuous vibration or external force (such as wind power, water power and centrifugal force). Gravity destoner machine consists of screening part, classifying part, stone removing part and winnowing part and has the dual functions of classifying and stone removing. It is the newly designed efficient corn cleaning equipment and is the most ideal equipment in cleaning section of grain and corn fine and deep processing.

Weeding machine adopts winnowing and floatation method to remove weeds and stem leaves. Iron removing machine utilizes magnetic separation method to remove iron magnetic material, such as sheet iron, iron nail and screw. Magnetic iron removing machine can be divided into electromagnetic type and permanent magnet type.