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The salted egg washing machine was developed having the structure with width of 60 cm, length of 100 cm and 113 cm in height. The design of mechanisms in the washing process consisted of a screw conveyor covered with dish washing sheet to transport salted eggs to the washing process and two nylon roller brushes with diameter of 8 cm and length of 70 cm for polishing and cleaning the dirt sticking around the salted egg surface. The top of the washing machine was sprayed with water throughout the process to promote easy washing. Three factors were tested which included the speed of the nylon roller brushes, the volume of water used in process and rotation direction of the nylon roller brushes. The resultant tests showed that the higher the speed of the nylon roller brushes, the higher the performance of cleaning marl and the washing efficiency of salted eggs. The higher quantity of water used to wash eggs affected the amount of chalk being washed and resulted in lower number of uncleaned salted eggs but not significantly different statistically. The direction of rotation of the nylon roller brushes had an effect on the percentage of uncleaned salted eggs after washing process. The best conditions of washing the salted egg with the washing machine were the speed of the nylon roller brushes at 10 rpm, the volume of water to use in process at 300 cm3/s and the rotating direction of the primary polishing roller brush in the same direction as the secondary polishing roller brush which provided the washing efficiency of marl equal to 100% and the efficiency of cleaning salted eggs amounting to 96.67%.
D Krishna, S Rama Mohan and B S N Murthy. 2002. Performance Evaluation of Public Research Institutes Using. Principal Component Analysis. Journal of Sceintific & Insdustrial Research Vol. 61, pp 940-947
Ketsinee Mewong, Thitima Jitnork and Piyaporn Komol. 2011. Egg washing machine. BrainChild TV3. https://brainchild.bectero.com/archive/invention-detail.php?pid=564, accessed on 22 September 2014. (in Thai).
Natcha Wutjanapaibool and Suwit Buddsen. 2013. Semi-Automatic Egg washing machine. Agricultural engineering project. Kasetsart University kamphaengsaen kampus. (in Thai).
Suratpittaya School. 2013. Egg washing machine. BrainChild TV3. https://brainchild.bectero.com/ award/content.php?content_id=496, accessed on 22 September 2014. (in Thai).
Udomsak Sae Tiang, Kamphu Phunupha, Ganesh Nasorod, Jakraphan Singhachot, Chantharak Sungchuay, Chayanin Srivisad, Nuttapong Prayongsak, Dechathorn Nanthasuwan, Sirichat Reuangnate and Aphidech Sae Ung. 2013. Egg washing machine. Ranong Technical College. https://www.rntc.ac.th/index2.php?name=news&file=readnews&id=185, accessed on 22 September 2014. (in Thai).