Grain Cleaning Plant

Grain Cleaning.Grain cleaners are the first and most important piece of equipment used to clean any type of grain, seed or beans. 

Grain cleaning

Winnowing

Lighter materials such as unfilled grains, chaff, weed seeds, and straw is removed through winnowing. To improve efficiency when there is no sufficient wind, a blower or an air fan can be used. However, winnowing recovers only the heavier grains. Other heavy particles like heavier weed seeds, off types, stones and dirt might still be included in the rice.

Screening/Sifting

Smaller materials such as weed seeds, soil particles and stones can be removed by sieving the grain through a smaller sized screen (1.4 mm or less sieve opening). This can also be done mechanically through machine cleaners which use an air stream to remove light materials such as straw, chaff, and unfilled grains.

What is the importance of grain cleaning?

Grain cleaning will improve the drying, the storability of grain, reduce dockage at time of milling, and improve milling output and quality; while, seed cleaning will reduce damage by disease, and improve yields.

Harvested grain is usually fairly clean. Usually being the operative word, as this is dependent on a number of critical factors; the correct settings and capacity being used, the grain being dry, no heat damage taking place and kernels not being broken during the harvesting process – many factors, which are difficult to control. In addition, the quality of grain begins to deteriorate as soon as it has been harvested, so it is imperative that dirt and impurities are removed to delay the deterioration process and ensure that the stored grain is of high quality for end-users.

It is therefore highly recommended that harvested grain is passed through a grain cleaner and/or pre-cleaner in order to ensure that the quality of the grain is optimised before it goes into storage.

Pre-cleaning grain before storage plays two vital roles:

Adding value to the grain through the removal of dirt, impurities and damaged particles.

Ensuring a longer life of the grain whilst it is in storage.

Hot Tags:  Grain Cleaning Plant.