Rancang Bangun Mesin Pengupas dan Pemisah Kulit Polong Kacang Hijau Menggunakan Silinder Pengupas dan Tenaga Blower

Design of a Machine for Peeling and Separating Green Bean Pods Using a Peeling Cylinder and Blower Power

Abstract

The manual process of peeling and separating mung bean pods is still time-consuming, labor-intensive, and causes potential yield losses due to seed damage. This results in low efficiency during the postharvest stage. This study aims to design and test a mung bean pod peeler and separator machine using a peeling cylinder and blower power. The machine is designed with main components consisting of a hopper, peeling cylinder, 0.5 HP electric motor, pulley belt transmission system, and a separating blower. The machine operates by feeding the pods into the hopper, after which the peeling cylinder rotates to detach the seeds from the pods through friction and impact, while the blower functions to separate the pods from the seeds. Test results show that the machine can process 1 kg of material per minute, equivalent to a capacity of 60 kg/hour. In the first stage of testing, the peeling success rate reached 86% with an average overall performance of 78.05%, which was still below the 80% target. After modifications were made to the outlet channel, the performance improved significantly, achieving a peeling success rate of 99.10% and an overall average of 93.00%, exceeding the design target. Thus, this machine is effective in improving postharvest efficiency for mung beans and has the potential to reduce dependency on manual methods.