Reducing the rate of broken rice and increasing the rate of whole rice have become a way to improve the comprehensive economic benefits of enterprises. The higher the temperature of the rice mill is, the more broken rice is produced. This is a common phenomenon in rice factories. In the process of rice milling, the sand roller grinds the surface of the rice grain to remove the crust layer and the rice grains in the whitening chamber are subjected to friction and collision, which will generate a large amount of heat, so that the surface temperature of the rice grain is increased.
Due to the poor thermal conductivity of the rice grains and the slower inward transfer of the surface temperature of the rice grains, a temperature gradient (temperature difference) is formed from the outside to the inside. A large temperature difference causes thermal stress to be generated inside the rice grains, and the thermal stress exceeds the inherent strength of the rice grains. The rice ruptures or bursts. The structure of the traditional rice machine determines that the rice machine has a large ventilation resistance, and the air volume passing through is small, and it is difficult to suppress the rice temperature from rising during the rice milling process to produce broken rice. Achieving low-temperature rice milling and inhibiting the rise of rice temperature is an effective method to reduce cockroaches.
空気が漂白室に浸透する量を増やすことで、低温上昇を実現し、米の精米率を向上させることが可能です。低温上昇米は、風を吹き付けて漂白室内を通過させ、研磨によって発生した熱を除去し、米の温度上昇を抑える方法です。したがって、低温上昇米の精米機の重要な技術は、米機の内蔵送風機の風圧と風量を増やし、漂白室前部に吹き付ける風の抵抗を減らし、出力単位あたりの漂白移動エリアの換気量を増やすことです。