Design and Development of Oil Seed Presser by using Energy Source as Human Powered Flywheel Motor

摘要

For extracting fresh small to medium quantity of oil in the villages where the electric power is not available we can use screw type oil seed presser by using energy source as human powered flywheel motor. This can be obtained at an affordable price from equipment like a model screw press, which is capable of processing small quantities of oil-seed, if readily available. In this study, a model screw press was designed and fabricated. In the design of the screw press, the size of the screw material, the optimum shaft length for a given screw pitch, appropriate shaft speed, the tapering angle of the conical shaft, the maximum shaft, diameter and the inside diameter of the enclosing barrel were determined. A shaft speed of not more than 300 rpm was found to be suitable for working the screw press while the clearance between the shaft and the barrel was 2 mm.Quality evaluation of the product showed that the acid value, the saponification number and the peroxide value of the oil obtained from roasted peanut were lower than that obtained from fresh peanut, implying that oil expressed from roasted peanut is ofbetter quality to the oil obtained from fresh peanut.