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2022, vol. 47, br. 4, str. 15-27
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Razvoj i ocena performansi miksera (mešača) sa motorom za hranu
Development and performance evaluation of a motorized tumble barrel feed/food mixer
aMichael Okpara University of Agriculture, Department of Agricultural Engineering, Umudike, Umuahia, Abia State, Nigeria bMichael Okpara University of Agriculture, Department of Animal Production, Umudike, Umuahia, Abia State, Nigeria
e-adresa: etoamaihe.ukachi@mouau.edu.ng
Sažetak
Dizajniran je i proizveden mešač (mikser) za hranu i stočnu hranu sa cilindričnim oblikom. Ima kapacitet zapreminski od 0,33m3 2 . Cilindrični mikser se sastoji od rezervoara, cilindra od nerđajućEG čelika sa pregradama (lopatice). Montira se na čelični okvir i pokreće osovinu koja je povezana sa mešalicama unutar pregrada. Pregrade su alternativno postavljene u cilindru tako da se ne dodiruju tokom rada. Osovinu pokreće elektromotor promenljive snage od 3 KS (2,25 kW). Testovi performansi su sprovedeni na mašini nakon proizvodnje korišćenjem standarda za testiranje ASAE (R2006), kao i potpuno randomizovanog dizajna (CRD). Proučavane su tri brzine miksera, 100, 150 i 200 rpm (min-1 ) i četiri vremena mešanja od 5, 10, 15 i 20 minuta, jer utiču na stepen mešanja (DM) mlevenih i oljuštenih uzoraka kukuruza u mešalici. Dobijeni rezultati su pokazali da je došlo do povećanja stepena mešanja kako se brzina mašine povećavala sa 100 na 200 rpm (min-1 ). Takođe se stepen mešanja povećavao kako se vreme mešanja povećavalo sa 5 minuta na 20 minuta za tri proučavane brzine. Iz tabele Analiza varijanse, izračunate F-vrednosti su bile mnogo veće od tabelarnih vrednosti sa verovatnoćom od 5%. Ovo ukazuje na veliki značaj uticaja brzina mešanja na stepen mešanja cilindrične mešalice. Brzina od 150 rpm (min-1 ) dala je najveći efekat u mikseru. Iz razlika u tabelama srednjih vrednosti, uočene su značajne razlike u stepenu mešanja za brzine od 100 i 150 rpm (min-1 ) za sva različita vremena trajanja mešanja. Međutim, pri brzini od 200 rpm (min-1 ), nije bilo značajne razlike u DM između vremena mešanja od 15 do 20 minuta.
Abstract
A tumble barrel food /feed mixer was designed and fabricated. It has a volumetric capacity of 0.33 m3 . The tumble barrel mixer consists of a hopper, a stainless steel barrel with baffles. It is mounted on a steel framework and driven by a shaft connected to stirrers inside the baffles. The baffles are alternatively placed in the barrel in such a way that they do not touch the stirrers during operation. The shaft is driven by a 3HP (2,25 kW) variable speed electric motor. Performance tests were conducted on the machine after fabrication using the ASAE (R2006) test standards, and also Completely Randomized Design (CRD). Three speeds of the mixer, 100,150 and 200 rpm (min-1 ) ( and four mixing times of 5,10,15 and 20 minutes were studied as they affected the Degree of Mixing (DM) of ground and shelled corn samples in the mixer. Results obtained showed, there was an increase in the degree of mixing as the speed of the machine increased from 100 to 200 rpm (min-1 ). Also the degree of mixing increased as the time of mixing increased from 5mins to 20 minutes for the three speeds studied. From the Analysis of variance tables, the calculated F-values were very much higher than the tabulated values at 5% probability. These indicate a high significance of the effect of speeds of mixing on the degree of mixing of the tumble barrel mixer. The speed of 150 rpm (min-1 ) gave the highest effect in the tumble mixer. From the difference of means tables, there were significant differences in the degree of mixing for 100 and 150 rpm (min-1 ) speeds for all the different time of mixing durations. However, in the 200 rpm (min-1 ) speed, there was no significant difference in the DM between the 15 to 20 minutes mixing time duration.
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Reference
|
|
|
*** (2017) Tumble blenders. www.miraclemixer.com, 22nd October 2017
|
|
|
Adebukola, A., Patrick, O.A. (2019) Development and evaluation of a fish feed mixer. AgricEngInt: CIGR Journal Open Access, 21(3)
|
|
|
ASAE Standards (2006) (ASAE S380 R2006): Test procedure to measure mixing ability of portable farm batch mixers. 261-262
|
|
 
|
Balami, A.A., Adgidzi, D., Mua'zu, A. (2013) Development and testing of an animal feed mixing machine. International Journal of Basic and Applied Science, 1(3), 491-503
|
|
|
Brennam, J.G., Butters, J.R., Cowell, N.D., Lilly, A.E.V. (1981) Food engineering operations. London: Applied Science Publishers ltd, 2nd Edition, 116
|
|
|
Chikwado, U.K. (2015) Development and performance test of poultry feed mixing and pelleting machine. International Journal of Science and Research, 4(6), 1161-1166
|
|
|
Cochran, W.G., Cox, G.M. (1992) Experimental design. John Wiley and Sons M.Y, 3rd edn, pp.335-375
|
|
|
Gosa, B. (2020) Development of livestock feed mixer. International Journal of Scientific and Research Publications, vol.10, Issue 10
|
|
|
Hall, A.S., Holowenko, A.R., Laughlin, H.G. (1988) Theory and problems of machine design. Singapore: McGraw-Hill Book Company, S. I. (metric) edition, pp. 255 -276
|
|
|
Harner, I., Keith, B., Tim, H. (1995) Rotating drum mixers. Kansas State University of Agriculture and Cooperative Extension Service Bulletin
|
|
|
Ibrahim, S., Fasasi, M.B. (2004) Design and development of a portable feed mixer for small scale poultry farmers. u: NIAE 26 Ilorin, Proceedings
|
|
|
Keith, B., Tim, H. (1994) Testing mixer performance. Kansas State University Agricultural Experiment Station And Cooperative Service, Mf-1172, pp. 1-4
|
|
2
|
Khurmi, R.S., Gupta, J.K. (2005) A textbook of machine design (S. I. Units). Ram Nagar, New Delhi: Eurasia Publishing House (PVT.) Ltd, 509-600, 677-714
|
|
|
Krutz, G., Thompson, L., Claar, T. (1984) Design of agricultural machinery. New York: John Wiley and Sons, 259-277
|
|
|
Say, D.R. (1987) The technical center for agricultural and rural development. www.Rmcord.Com/Twisted.Com.Htm
|
|
|
Singh, S. (2001) Machine design. New Delhi: Khanna Publishers, 298-333
|
|
|
|
|