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.
Al aumentar la cantidad de aire que penetra en la cámara de blanqueo, es posible lograr un aumento de baja temperatura y aumentar la tasa de molienda de arroz. La molienda de arroz a baja temperatura consiste en usar el viento rociado en la cámara de blanqueo para pasar a través de la capa de granos de arroz y llevarse el calor generado por el molido para suprimir el aumento de la temperatura del arroz. Por lo tanto, la tecnología clave de la máquina de molienda de arroz a baja temperatura es aumentar la presión del viento y el volumen de aire del soplador de aire incorporado en la máquina de arroz, reducir la resistencia del viento rociado en la parte frontal de la cámara de blanqueo y aumentar la cantidad de ventilación del área de movimiento de blanqueo por unidad de producción.