Grassroot Innovations

Realising that manual threshing of pepper was time-consuming and tedious, Binoy developed a pepper thresher. This machine works on rubbing action to thresh berries (pepper) from stalks/spicks. It has a rotating drum with spiral blades on the periphery and variable threshing clearance with an overload spring which helps reduce the machine's load, protect it from clogging and reduce power consumption. The threshing drum has six overhead spiral blades placed at equal distance of 6.8 cm with 26-35 degree with horizontal plane. It is powered by an electric 1hp AC motor having 1440 rpm. The threshing capacity is 295.85 kg/h, with threshing efficiency of 84.5% (single pass) and power consumption of 0.43 kW. The un-threshed spikes are fed again to machine along with fresh input (or separately) resulting in efficiency close to 95%.