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Volume 6 , Issue 2 , December 2020 , Pages: 10 - 18
Design and Fabrication of Teff Threshing Machine
Merga Workesa Dula, Oromia Agricultural Research Institute, Bako Agricultural Engineering Research Center, Bako, Ethiopia
Solomon Lamessa Kereyu, Oromia Agricultural Research Institute, Bako Agricultural Engineering Research Center, Bako, Ethiopia
Melese Teresa Keneni, Ethiopian Agricultural Transformation Agency, Addis Ababa, Ethiopia
Chalchisa Tadele, Giz Agricultural Mechanization and Technology for Smallholder Productivity, Addis Ababa, Ethiopia
Received: Sep. 20, 2020;       Accepted: Oct. 10, 2020;       Published: Dec. 11, 2020
DOI: 10.11648/j.nsnm.20200602.11        View        Downloads  
Abstract
Teff has the largest value in terms of both production and consumption in Ethiopia and the value of the commercial surplus of teff is second next to coffee. The traditional way of threshing and winnowing, leads to contamination of grains with foreign matter (pebbles, dirt, and cow dung) and loss of grains due to the foreign matter dropping in to grains and the wind blowing grains away with chaff. This design helps to find out the typical dimensions of various components of the threshing machine with great accuracy in small time and also gives fine representation of engine drive teff threshing machine. The machine was fabricated by using the low cost material available in local market. Main components of this machine are: frame, sieve, and threshing unit, concave, blower, feeding table, sucker, and grain delivery chute and engine seat. A teff threshing machine was designed, constructed and evaluated for its performance. Mild steel was used majorly for the fabrication of component parts for ease of machining, assembling, maintenance and affordability. The machine was evaluated on farm observed to acceptable threshing capacity and efficiency and the operation cost and quality loss due to traditional threshing were minimized by far.
Keywords
Teff, Threshing Machine, Design, Power Transmission and Blower
To cite this article
Merga Workesa Dula, Solomon Lamessa Kereyu, Melese Teresa Keneni, Chalchisa Tadele, Design and Fabrication of Teff Threshing Machine, Nanoscience and Nanometrology. Vol. 6, No. 2, 2020, pp. 10-18. doi: 10.11648/j.nsnm.20200602.11
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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