A multi-purpose bean thresher is an agricultural machine designed to separate beans and other similar crops such as peas, soybeans, and groundnuts from their pods quickly and efficiently. It consists of a feeding hopper, threshing drum, concave screen, cleaning blower, grain collection unit, and an electric motor or diesel engine. The machine is engineered to handle different crop varieties while minimizing grain breakage and maximizing output quality.

In operation, harvested crop pods are fed into the hopper and conveyed into the threshing chamber, where the rotating drum applies impact and rubbing action to detach the grains from the pods. The mixture then passes through a screening and cleaning system, where a blower removes chaff, dust, and other light impurities. Clean grains are discharged through the grain outlet, while empty pods and waste materials are expelled separately. Multi-purpose bean threshers are widely used by farmers and agricultural processors to improve efficiency, reduce labor costs, and speed up post-harvest processing.