Rancang Bangun Mata Pisau Pada Alat Pembuat Sari Kedelai (Glycine Max)

Abstract

MUHAMMAD FADIL: Test of blades on the soymilk maker (glycine max), supervised by SAIPUL BAHRI DAULAY and ADIAN RINDANG. Soybean is a shrubs crop that grow upright. In the form of soy protein, it can be used as an industrial material that is processed into foods, such as: milk, MSG, pastries, candies and edible meat industry. Crusher knife is one of the main components in the soymilk maker, which plays as crusher that crush soybeans into perfect soymilk. This research was aimed to design, test, analyze and compare the effectiveness between two types of crusher knives with blades of different shapes to be applied on soymilk maker. The parameters observed were the effective capacity of the tool, yield, economic analysis, cost of digestion of soy beans, Break Even Point (BEP), Net Present Value (NPV), Internal Rate of Return (IRR). The results showed the capacity of the equipment are 6.14 kg/h, the yield obtained in making the soymilk using a non serrated knife was 64.4%, while using a serrated knife was 61.84%, cost of manufacture of soymilk was Rp. 1903.18/kg in the year 1, Rp. 1813.04/kg in year 2, Rp. 1783.02/kg in year 3, Rp. 1724.18/kg in year 4, and Rp. 1722.72/kg in year 5, break even point it was 31.860 kg/year, Net present value of this equipment with an interest rate of 8% was Rp. 189.285.7881,7 and its internal rate of return was 47%, then the equipment was worth to used