Evaluating the Performance of a Threshing Machine for Purslane in Laboratory Scale

Document Type : Research Paper

Authors

1 Master's degree graduated, Department of agricultural machinery and mechanization, Faculty of Rural and Civil Engineering, agricultural sciences and natural resources university of khuzestan, iran

2 Assistant Professor, Department of Agricultural Machinery and Mechanization Engineering, Faculty of Rural and Civil Engineering , Agricultural sciences and Natural Resources University, Khuzestan, Iran.

3 Mechanization of Agricultural Engineering Department, Faculty of Agricultural Engineering and Rural Development, Agricultural Sciences and Natural Resources University of Khuzestan. Ahvaz, Iran

Abstract

Purslane is an important vegetable and medicinal plant that is produced and consumed in the southern regions of Iran. Recently, special attention for processing and pharmaceutical industries of purslane has been paid. Seed separation procedure, is one of the most important and difficult steps in purslane processing. In this Research, a seed threshing unit for mechanization of purslane seed harvesting, was built, evaluated and tested. The most important components of this thresher are the shaft, the rubber thresher and the rubber concave. This machine was designed and manufactured and then the losses were determined. The losses evaluation was carried out under randomized factorial analysis. Experiments were conducted at three levels of drum speed (35, 80 and 120 rpm), feed rate (2, 3 and 5 kgmin-1) and sieve swing speed (180, 200, 220 rpm). The results showed that the impact of drum rotational speed, oscillation of sieve and feed rate on seed separation percentage and unopened sheath is significant at 1% level. The lowest amounts of losses (9.39%) were obtained at 80 rpm drum rotational speed and 2 kgmin-1 feed rate and also 200 rpm sieves swing speed, respectively. Highest percentage of losses (27.83%) was obtained at 120 rpm drum rotational speed, 5 kgmin-1 feed rate and 220 sieves swing speed, respectively. Threshing efficiency at lowest level of machine losses, was 92%. Maximum output capacity (at lowest level of losses) and energy consumption were obtained 2.7kgh-1 and 14084 KJ, respectively.

Keywords

References

Anonymous. (1994). ASAE Standards S352.3. Moisture measurement- ungrounded grains and seed. In M.I. st. Joseph.
Anonymous. (2015). Agricultural Statistics of the Crop Year 2013-2014. Ministry of Agriculture.
Arfia, G. K. (2006, November). Engineering parameters affecting cleaning of soybean grains. The 14 th. In Annual Conference of the Misr Society of Agric. Eng (Vol. 22, pp. 807-822).
Ghorbani, M., Bojarpour, M., Miyahi, M,. Fayazi, J,. and Tabatabai, S. (2013). The effect of portulaca oleracea on yield and carcass characteristics of broilers. Iranian Veterinary Journal, 4(9): 88-98. (in farsi).
Jethva, k. r. and Vashney, A. K. (2015). Performance evaluation of developed reciprocating type cumin cleaner cum grader. International journal of Agricultural Engineering. 8(2): 151-159.
Khalifeh, Rahnama, M., Kazemi, N. & Memardastjerdi, R. (2019). Investigating some of the physical properties of portulaca oleracea (stems and seeds) required in the design of harvesting machines and post harvesting. 16th National Congress of Agricultural Sciences and Plant Breeding of Iran, 5-7 February, Agricultural Sciences and Natural Resources University of Khuzestan, Iran. pp.59-6. (in farsi).
Khazaei, J., Behrozi Lar, M., Rajabipour, A. & Mohtasbi, S. (2003). The effect of Threshing cylinder speed, moisture and size of pea pods on grain separation percentage and Percentage of broken grains in a fingertip beater. Journal of Agricultural Engineering of Iran, 4(34): 825-836. (in farsi).
Nadew, A. A. 2015. Design and development of tef grain and chaff separating and cleaning machine. A thesis submitted to the school of graduate studies through the school of natural resource and environmental engineering haramaya university Pp 62-76.
Saeedirad, M., Hossein, J., & Mehdinia, Abbas. (2009). The effect of threshing cylinder and concave properties and product moisture on the quality of green cumin beating. Journal of Agricultural Engineering of Iran, 4(10): 30-48. (in farsi).
Smith, D., Dilio, B. J., Sims, D. H. (2006). Testing and Evaluation of Agricultural Machinery and Equipment. Translation: Saebi Monfar, H., Sedaghat Hosseini, S.M. Agricultural Research and Training Organization. Tehran. P. 327.
Werby, R. (2010). Performance cleaning unit for clover seeds affecting some physical and mechanical properties. In Misr Journal Agricultural Engineering, 27(1): 266-283.
Iranian Journal of Biosystems Engineering
Volume 52, Issue 1
May 2021
Pages 107-117

Files

History

  • Receive Date: 26 May 2020
  • Revise Date: 11 November 2020
  • Accept Date: 14 December 2020

Share

How to cite

Statistics