The rice color sorter shall be set after the polishing rice machine and the white rice classifier. The surface of the polished and white rice classifier shall be bright and clean. The rice contains less broken rice and the bran powder has been removed, which is conducive to the resolution and identification of the optical system; At the same time, there will be no rice grains and bran powder binding on the chute to affect the flow of rice grains and change the flow rate, so that a better color separation effect can be obtained. To provide high-quality power supply, the machine should be provided with a separate grounding circuit, and the stable voltage can ensure that the electrical components output accurate signals and improve the working accuracy; Setting a separate grounding circuit can avoid interference of external electrical signals such as other machines and prevent malfunction of electrical components of the machine. At the same time, pay attention to the direct or relevant contact between the electric welding machine circuit and the machine.