Abstract: Processing of pepper involves different unit operation such as threshing, drying, cleaning and packaging. These operations are important to ensure clean and quality product. The threshed and dried black pepper has irrelevant matter like spent spikes, pin heads, stones, soil particles …etc, mixed with it. Cleaning on small scale is done by winnowing and hand picking which still consist of some impurities. This manual method used for cleaning is time consuming and also work involves human labour.
Hence to overcome the above mentioned problems in this project, “Design and Fabrication of Pepper Thresher Machine”, is used which results in rich grade of pepper is collected in separate chamber and dust is collected in other side of tray.
This project aims at reducing human labour and time involved in the traditional way of cleaning. Just one person is capable of carrying out the entire separation and cleaning operation. In a short duration of time the machine can convert large quantity of impure raw material into acceptable final products.

Keywords: Threshing, Drying, Cleaning, Grading

| DOI: 10.17148/IARJSET.2021.8960