Design and Development of Young Coconut Shell and Husks Shredder Machine

Abstract

Abstract Young coconut shell and husk shredder machine is designed for shredding the husks after the process of coconut shell crushing. The main objective of this machine is to reduce coconut shell waste after the completion of harvest. The machine contains of two shafts of 25 blades per shafts (1st stage) and another two shafts of 30 blades per shaft (2nd stage) placed side by side in order to put pressure on the coconut shell and husk during the cutting process. At stage 1, which is the shredding stage, it has 2 shafts which both rotate in the opposite direction. The blades have bigger surface area, thick, hard-faced cutting surfaces and run in low rotation per minute (rpm) in order to crush the coconut shell and husk. At stage 2, which is the cutting stage, it consists of 2 shafts which rotate in the opposite direction and each shafts consist of 30 blades. The blades in stage 2 is thinner compared to the blades in stage 1, sharp cutting edge and the distance from each blades are closer to each other in order to cut and shred the coconut shell and husks into small, fine and desired size. Furthermore, the rotations of the blades are both in opposite directions toward each other which mean that the cutting process will consists pressure into the shell and husks. The output for the machine is able to produce 50 - 80 kg of young coconut shell and husks after the shredding process hourly. The machine uses electrical motor to reduce sound pollution. Besides that, a 1420 rpm motor is fitted to run the machine entirely which is equivalent to 1 Horsepower (Hp). The output power achieved is 544 kiloWatt hour (kWh) with an efficiency of 73%. Lastly, the objectives are achieved, that is to reduce young coconut shell and husks waste by converting to animal feeds.