DESCRIPTION

The hand-operated grain cleaner is used for sieving out foreign matters from Bengal gram, grain (wheat) and soyabean. 

CONSTRUCTION

This grain-cleaning device has the advantage of having double screens. The cleaner is shaped like a cradle and is operated manually. The grains get separated from the foreign matter due to difference between their respective sizes. The total length of the device is 900 mm, with a width of 600 mm and a height of 140 mm. The total weight of this post-harvest equipment is 14 kgs. 

WORKING

This implement can be operated by just one person without any problem. The process is very simple. About 5-10 kgs of the grain is fed into the cleaner in each batch and the cradle-like-cleaner is given a few swings for separation purposes. 

The impurities remain in the top-sieve due to the bigger size and the clean Brain slips down into the sieve at the bottom. Out of this clean lot, still finer impurities are screened out to attain a cleaning efficiency of 99 to 99.8%. The screened grain is collected in a gunny sack. Precaution, however, should be taken to hang the cleaner securely from a tripod stand or a beam. 

SOURCE

Director, Central Institute of Agricultural Engineering, Nabi Bagh, Berasia Road, Bhopal - 462 018, Madhya Pradesh