Rubber roller huller: The main working component is a pair of horizontal rubber or plastic rollers bonded or coated with a rubber layer on a cast iron cylinder. The two roller axes are located in the same horizontal plane or have a slight height difference, rotating in opposite directions at different speeds. One roller is fixed in position, while the other roller can move, making the rolling distance between the two rollers adjustable. The rubber roller huller has a high hulling rate, smooth surface of brown rice, and less broken rice. However, in high temperatures, the rubber roller wears out quickly, and brown rice bursts more, resulting in higher production costs.
Sand disc rice huller: With the help of two circular diamond sand discs, the upper disc is fixed and the lower disc rotates, with a linear speed of 20-25 meters per second. Rice hulls in two sand trays due to end pressure, rubbing, and tearing. The advantage is that brown rice has less burst waist, the sand tray is more wear-resistant than the rubber roller, and the processing cost is low; The disadvantage is that the shelling rate is low and there is a lot of broken rice.
Centrifugal rice huller: The main working components include a rotating throwing disc inside and a fixed impact ring outside. The rice enters the work area and is accelerated by the shaking disc. With the help of centrifugal inertia force, it flies towards the impact circle and peels off due to impact. This machine has a simple structure, convenient operation and management, low power consumption, and low processing costs; It's just that there is a lot of broken rice, and the rice yield is low.