Optimum design for sorting section of the rice color sorter (Part 1) - Development of electromagnetic valve with high-speed responsiveness

摘要

The rice color sorter inspects every grain sliding at a high speed to remove defects such as defective grains and impurities accurately. In order to remove the defects without involving good grains by ejection air, it is necessary to investigate on the high-speed responsiveness of the electromagnetic valve and the minimum activation of the ejector nozzle. In this study, the functions of the electromagnetic valve and the ejector nozzle were investigated in detail and these parts were designed for optimum sorting. In this report, through the development of an energy saving type high-magnetomotive force coil by increasing the magnetic flux density of coil and changing the drive circuit from continuous input type to pulse input type, it has been confirmed that the optimum response time of the electromagnetic valve is 0.7 ms and the durability of the coil can be improved. The optimum design of the ejector nozzle was investigated in the 2nd report.