Design and Fabrication of a Hybrid Paddy Thresher with Aspirator

Abstract

Threshing and winnowing are two different operations if we proceed through traditional method, which involves a lot of physical effort, cost, drudgery; makes human lives difficult, time consuming and yields very low level of output etc. In view of all the associated problems the hybrid thresher was designed and fabricated. In this machine, Threshing and winnowing of paddy are done simultaneously. This designed machine can be powered by both motor and or pedal. Power source during operation can be changed by adjustments. Fabrication of this machine was done at the workshop of “Department of Farm Machinery and Power Engineering”. While research work was conducted on the farms of SHUATS, Prayagraj (U.P.). The threshing capacity obtained was found to be in the range of 70 - 90 kg/hr. Also, the average threshing efficiency, cleaning efficiency and threshing losses obtained were 98 %, 94 % and 5% respectively. Hence, the machine so designed was found to be economical, efficient, time saving, reducing labour charges with good quality grains and minimum damages etc. The machine was designed keeping in view of human engineering and Ergonomics so as to provide comfortable for any user be it male or female.