Design and Fabrication of Teff Threshing Machine

Merga Workesa Dula; Solomon Lamessa Kereyu; Melese Teresa Keneni; Chalchisa Tadele

doi:doi:10.11648/j.nsnm.20200602.11

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Design and Fabrication of Teff Threshing Machine

Merga Workesa Dula, Solomon Lamessa Kereyu, Melese Teresa Keneni, Chalchisa Tadele

Published in Nanoscience and Nanometrology (Volume 6, Issue 2)

Received: 20 September 2020 Accepted: 10 October 2020 Published: 11 December 2020

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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.

Published in	Nanoscience and Nanometrology (Volume 6, Issue 2)
DOI	10.11648/j.nsnm.20200602.11
Page(s)	10-18
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2020. Published by Science Publishing Group

Keywords

Teff, Threshing Machine, Design, Power Transmission and Blower

References

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[2]	Akintunde, B. O., Oyawale F. A. and Akintunde, T. Y. 2005. Design and Fabrication of a Cassava Peeling Machine. Nigerian Food Journal 23, 231-238.
[3]	ASME. 1995. Design of Transmission Shafting. American Society of Mechanical Engineering, New York, NY USA.
[4]	Bekabil F, Behute B, Simons R, Berhe T (2011) Strengthening Teff Value Chain: In Teff Improvement: Achievements and Prospects. Proceedings of Second International Workshop. November 7-9, 2011. Dream land Hotel and Resort, Debre-Zeit, Ethiopia.
[5]	Bekele, E., Fido, R. J., Tatham, A. S., & Shewry, P. R. (1995). Heterogeneity and polymorphism of seed proteins in tef (Eragrotis tef). Hereditas, 122 (1), 67-72.
[6]	Bosoi, E. S., O. V. Verniaev, I. I. Smirnov and E. G. Sultan-Shakh, 1991. Theory, Construction and Calculations of Agricultural Machines, Vol 2. Balkema, Rotterdam, Netherland.
[7]	Bruno, E. 1973. Fans. Design and Operation of Centrifugal Axial Flow and Cross Flow Fans. Pergamon Press, Newyork. (pp. 89–106)
[8]	Bultosa, G. (2007). Physicochemical characteristics of grain and flour in 13 tef [Eragrostis tef (Zucc.) Trotter] grain varieties. J. Appl. Sci. Res, 3 (12), 2042-2051.
[9]	Central Statistical Authority (CSA) (2012/2013) Agriculture Sample Survey. Report on Area and Production for Major Crops. Statistical Bulletin No 532 CSA, Addis Ababa, Ethiopia.
[10]	Church H. Austin. 1972. Centrifugal Pumps and Blowers, Kreiger Publishing Company.
[11]	Collyns, Dan. 2013. Quinoa brings riches to the Andes. Retrieved from http://www.the guardian.com/world/2013/jan/14/quinoa-andes-bolivia-peru-crop.
[12]	Gupta, J. K. and Khurmi, R. S. 2005. A Textbook of Machine Design. S. I. Units. Eurasis Publishing House (PVT) Limited, New Delhi.
[13]	Hall, A. S. et al., 1981. Theory and Problems of Machine Design. Schaum’s Outline Series. McGraw Hill Book Co., New York, USA.
[14]	Lingaiah, K. 2003. Machine Design Data book, second edition. McGraw-Hill Education: New York.
[15]	Mengesha, M. H. (1966). Chemical composition of teff (Eragrostis tef) compared with that of wheat, barley and grain sorghum. Economic Botany, 20 (3), 268-273.
[16]	Merga, W. (2016) Development and Evaluation of Teff Threshing Machine. International Journal of Engineering Research & Technology, 11 (5), 2278-0181
[17]	Minten, B., S. Tamru, E. Engida, and T. Kuma. 2013. Ethiopia’s Value Chains on the Move: The Case of Teff. ESSP II Working Paper 52. International Food Policy Research Institute (IFPRI). Addis Ababa, Ethiopia.
[18]	Richard, G. B. and Nisbett, J. K. (2011). Shigley's Mechanical Engineering Design, ninth edition, McGraw-Hill, New York, USA.
[19]	Tadasse E (1975) Teff (Eragrostis teff) cultivars: morphology and classification. Experimental Bulletin 66, Addis Ababa University, College of Agriculture, Ethiopia.
[20]	William C. Osborne. 1977. Fans. Pergamon press. Newyork.
[21]	Zewdu Abdi and Solomon. W., 2006. Moisture-Dependent Physical Properties of Tef Grain. Journal of Biosystems Engineering 96 (1): 57–63.
[22]	Zewdu Abdi, 2007. Aerodynamic properties of tef grain and straw material. Journal of Biosystems Engineering, 98 (2007): 304-309.

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APA Style

Merga Workesa Dula, Solomon Lamessa Kereyu, Melese Teresa Keneni, Chalchisa Tadele. (2020). Design and Fabrication of Teff Threshing Machine. Nanoscience and Nanometrology, 6(2), 10-18. https://doi.org/10.11648/j.nsnm.20200602.11

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ACS Style

Merga Workesa Dula; Solomon Lamessa Kereyu; Melese Teresa Keneni; Chalchisa Tadele. Design and Fabrication of Teff Threshing Machine. Nanosci. Nanometrol. 2020, 6(2), 10-18. doi: 10.11648/j.nsnm.20200602.11

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AMA Style

Merga Workesa Dula, Solomon Lamessa Kereyu, Melese Teresa Keneni, Chalchisa Tadele. Design and Fabrication of Teff Threshing Machine. Nanosci Nanometrol. 2020;6(2):10-18. doi: 10.11648/j.nsnm.20200602.11

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@article{10.11648/j.nsnm.20200602.11,
  author = {Merga Workesa Dula and Solomon Lamessa Kereyu and Melese Teresa Keneni and Chalchisa Tadele},
  title = {Design and Fabrication of Teff Threshing Machine},
  journal = {Nanoscience and Nanometrology},
  volume = {6},
  number = {2},
  pages = {10-18},
  doi = {10.11648/j.nsnm.20200602.11},
  url = {https://doi.org/10.11648/j.nsnm.20200602.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.nsnm.20200602.11},
  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.},
 year = {2020}
}

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TY  - JOUR
T1  - Design and Fabrication of Teff Threshing Machine
AU  - Merga Workesa Dula
AU  - Solomon Lamessa Kereyu
AU  - Melese Teresa Keneni
AU  - Chalchisa Tadele
Y1  - 2020/12/11
PY  - 2020
N1  - https://doi.org/10.11648/j.nsnm.20200602.11
DO  - 10.11648/j.nsnm.20200602.11
T2  - Nanoscience and Nanometrology
JF  - Nanoscience and Nanometrology
JO  - Nanoscience and Nanometrology
SP  - 10
EP  - 18
PB  - Science Publishing Group
SN  - 2472-3630
UR  - https://doi.org/10.11648/j.nsnm.20200602.11
AB  - 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.
VL  - 6
IS  - 2
ER  -

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Author Information

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

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Plain Text BibTeX RIS

APA Style

Merga Workesa Dula, Solomon Lamessa Kereyu, Melese Teresa Keneni, Chalchisa Tadele. (2020). Design and Fabrication of Teff Threshing Machine. Nanoscience and Nanometrology, 6(2), 10-18. https://doi.org/10.11648/j.nsnm.20200602.11

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ACS Style

Merga Workesa Dula; Solomon Lamessa Kereyu; Melese Teresa Keneni; Chalchisa Tadele. Design and Fabrication of Teff Threshing Machine. Nanosci. Nanometrol. 2020, 6(2), 10-18. doi: 10.11648/j.nsnm.20200602.11

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AMA Style

Merga Workesa Dula, Solomon Lamessa Kereyu, Melese Teresa Keneni, Chalchisa Tadele. Design and Fabrication of Teff Threshing Machine. Nanosci Nanometrol. 2020;6(2):10-18. doi: 10.11648/j.nsnm.20200602.11

Copy | Download

@article{10.11648/j.nsnm.20200602.11,
  author = {Merga Workesa Dula and Solomon Lamessa Kereyu and Melese Teresa Keneni and Chalchisa Tadele},
  title = {Design and Fabrication of Teff Threshing Machine},
  journal = {Nanoscience and Nanometrology},
  volume = {6},
  number = {2},
  pages = {10-18},
  doi = {10.11648/j.nsnm.20200602.11},
  url = {https://doi.org/10.11648/j.nsnm.20200602.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.nsnm.20200602.11},
  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.},
 year = {2020}
}

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TY  - JOUR
T1  - Design and Fabrication of Teff Threshing Machine
AU  - Merga Workesa Dula
AU  - Solomon Lamessa Kereyu
AU  - Melese Teresa Keneni
AU  - Chalchisa Tadele
Y1  - 2020/12/11
PY  - 2020
N1  - https://doi.org/10.11648/j.nsnm.20200602.11
DO  - 10.11648/j.nsnm.20200602.11
T2  - Nanoscience and Nanometrology
JF  - Nanoscience and Nanometrology
JO  - Nanoscience and Nanometrology
SP  - 10
EP  - 18
PB  - Science Publishing Group
SN  - 2472-3630
UR  - https://doi.org/10.11648/j.nsnm.20200602.11
AB  - 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.
VL  - 6
IS  - 2
ER  -

Copy | Download