ISOKEN GOLD AIGBE

This study presents the design, fabrication, and performance evaluation of an electric yam blending machine developed to improve the efficiency and hygiene of yam processing. Traditional pounding methods are labor-intensive, time-consuming, and yield inconsistent product quality, while existing mechanized systems are often costly and prone to leakage and maintenance challenges. The machine was engineered using standard design principles, incorporating a 1 hp electric motor (1440 rpm), belt-pulley transmission, stainless steel (SS304) blending chamber, and a rotating blade mechanism. Design analysis established a torque requirement of 7 Nm and a minimum power demand of 734 W to effectively process the high-density, viscoelastic yam
mass. Leakage prevention was achieved through the integration of food-grade sealing elements, including silicone and EPDM gaskets, at critical interfaces. Performance testing using 300–500 g yam samples showed an average processing time of 2.71 minutes for 500 g, with a throughput capacity of 16.18 kg/hr and an efficiency of 97%. Sensory evaluation confirmed high-quality output in terms of smoothness, cohesiveness, and elasticity. The developed system demonstrates enhanced processing efficiency, improved hygiene, and operational reliability, offering a cost-effective solution for small- to medium-scale yam processing applications