Energy-Efficient Low-Temperature Rice Processing Machine
How it works
Brown rice enters the machine from the feed hopper, is sent into the whitening chamber by the screw propeller, and spirals forward along the surface of the sand roller. This machine is equipped with a high-pressure, high-volume air jet fan. The "strong air jet" is sprayed into the whitening chamber through the hollow main shaft and the air jet holes of the sand roller. During the joint rice milling of the sand roller and the rice knife, the high-speed rotation of the sand roller generates a "vortex" to flip the rice grains, and the surface of the brown rice is repeatedly "sharpened" and "rubbed off", so that it is opened and whitened.
During the rice milling process, the roller grinds the surface of the rice grain to remove the bran layer. The friction and collision of the rice grains in the whitening chamber 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, the heat is slowly transferred from the surface of the rice grains to the inside, causing the rice grains to form a large temperature gradient (i.e. temperature difference). The large temperature difference generates thermal stress in the rice grains. The thermal stress exceeds the inherent strength of the rice quality, which will cause the rice grains to break or burst.
The air volume provided by the 18B sand roller rice mill is 2 to 3 times that of conventional rice mills, which takes away a large amount of heat generated by milling and friction, increases bran discharge, inhibits or reduces the rise in rice temperature, strengthens the "self-milling" and "mutual milling" between rice grains, and improves the uniformity of whitening. The temperature rise of rice leaving the machine is low, the increase in broken rice is small, and the bran content is small.
The discharge port of the 18B sand roller rice mill adopts a double pressure door air-closing device to make the pressure in the whitening chamber uniform. The machine is equipped with an air suction at the inlet and an air suction cooling rice trough at the rice outlet, which improves the air efficiency of the rice machine, realizes "dynamic cooling of rice", further reduces the rice temperature, reduces the power configuration and power consumption of the wind network of the rice milling unit, and is an energy-saving low-temperature rice mill.
Strong Blowing SystemUsing a high-pressure, high-volume blow fan, the "strong blowing" technique is employed to inject air into the whitening chamber through the hollow main shaft and the blowing holes of the sand roller. This process causes the rice grains to flip, undergo continuous "shaving" and "rubbing off", facilitating the process of husking and whitening.
Heat Stress ControlDuring the rice milling process, the milling roller grinds the surface of the rice grains to remove the bran layer, generating a significant amount of heat. However, the 18B sand roller low-temperature rice machine controls excess heat through blow fan volume regulation, reducing heat stress to prevent rice grain breakage or cracking.
Cooling Technology The 18B sand roller low-temperature rice machine is equipped with a double-pressure door closure system, incorporating suction and cooling rice trough designs to achieve "dynamic rice cooling". This technology lowers rice temperature, enhances the efficiency of the rice milling machine's air usage, reduces temperature rise, minimizes power consumption, and represents an energy-efficient low-temperature rice milling machine.
Whitening Uniformity By providing a large volume of air through blowing, the interaction between rice grains is enhanced, improving the uniformity of whitening. This results in lower temperature rise in the discharged rice, fewer broken grains, less bran content, and an overall increase in product quality.