Rice milling at low temperature can reduce the broken rice rate
Reducing the broken rice rate is what we have been working hard to do to upgrade the rice mill equipment. The whole rice rate is the top priority of the comprehensive economic benefits of rice processing. The higher the temperature in the rice mill, the more broken rice is produced. This is a common phenomenon in rice factories now. Rice milling at low temperature can reduce the broken rice rate. In the process of rice milling, the grinding of the surface of the rice grains with sand rollers to remove the bran skin layer and the friction and collision of the rice grains in the whitening room will generate a lot of heat, which will increase the surface temperature of the rice grains.
Due to the poor thermal conductivity of the rice grains and the slow transfer of the surface temperature of the rice grains to the inside, a temperature gradient (temperature difference) will be formed from the outside to the inside. A large temperature difference will cause thermal stress inside the rice grains. Thermal stress exceeding the inherent strength of the rice will cause The grain of rice cracked or burst. The structure of the traditional rice machine determines that the ventilation resistance of the whitening room of the rice machine is large, and the air volume passing through is small, and it is difficult to suppress the rise of rice temperature during the rice milling process and the resulting broken rice. Achieving low-temperature rice milling and inhibiting the rise of rice temperature is an effective method to reduce Susui Mi.
By enhancing the air volume penetrating the whitening room, it is possible to achieve low temperature rise rice milling and improve the whole rice milling rate. Low temperature rice milling is to use the wind sprayed into the whitening chamber to pass through the rice grain layer to take away the heat generated by grinding to suppress the temperature rise of rice. Therefore, the technical key of the low-temperature rice milling machine is to increase the wind pressure and air volume of the rice machine's own jet fan, reduce the resistance of the wind sprayed into the front section of the whitening room, and increase the ventilation volume of the whitening movement area per unit output.
Due to the poor thermal conductivity of the rice grains and the slow transfer of the surface temperature of the rice grains to the inside, a temperature gradient (temperature difference) will be formed from the outside to the inside. A large temperature difference will cause thermal stress inside the rice grains. Thermal stress exceeding the inherent strength of the rice will cause The grain of rice cracked or burst. The structure of the traditional rice machine determines that the ventilation resistance of the whitening room of the rice machine is large, and the air volume passing through is small, and it is difficult to suppress the rise of rice temperature during the rice milling process and the resulting broken rice. Achieving low-temperature rice milling and inhibiting the rise of rice temperature is an effective method to reduce Susui Mi.
By enhancing the air volume penetrating the whitening room, it is possible to achieve low temperature rise rice milling and improve the whole rice milling rate. Low temperature rice milling is to use the wind sprayed into the whitening chamber to pass through the rice grain layer to take away the heat generated by grinding to suppress the temperature rise of rice. Therefore, the technical key of the low-temperature rice milling machine is to increase the wind pressure and air volume of the rice machine's own jet fan, reduce the resistance of the wind sprayed into the front section of the whitening room, and increase the ventilation volume of the whitening movement area per unit output.
