The main function of a rice polishing machine is to remove the bran powder that adheres to the surface of white rice. There is a waxy protective layer on the polished rice surface, which can not only prevent the adhesion of rice bran or the shedding of Rice noodles in the production, storage, transportation and sales of rice, ensure the cleanness of rice, but also improve the quality and commodity value of finished rice.
Working principle of rice polishing machine
The rice surface treatment can make the rice crystal transparent, and form an extremely thin gel film on the rice surface. This process is called polishing. The main function of a rice polishing machine is to remove the bran powder that adheres to the surface of white rice. The polished rice surface has a wax protective layer, which can not only prevent the adhesion of rice bran or the shedding of Rice noodles in the production, storage, transportation and sales of rice, ensure the cleanness of rice, but also improve the quality and commodity value of finished rice, facilitate the storage of rice, maintain the freshness of rice, and improve the eating quality of rice.
Working process of rice polishing machine
The rice mill grinds white rice with a precision of one meter and flows it down from the feeding port into the polishing chamber. At the same time, the heated water (used when the room temperature is below 15 ℃) is passed through a temperature controlled water tank through a flow meter, flows through a rubber tube to the air water mixing nozzle, and then forms a water mist through high-pressure air, entering the hollow spindle water area. Under the strong negative pressure suction, the water mist passes through the spindle and polishing roller ventilation holes and enters the polishing roller surface to mix with the rice, And adhere to the surface of the rice grains, making the surface moist and soft. Through the rotary motion of the polishing roller in the polishing chamber, the rice grains continuously move inside the polishing chamber. During the movement, relative motion, friction, and compression occur between the rice grains, between the rice grains and the polishing roller, and between the rice grains and the rice sieve. Due to the wetting and softening of the surface of the rice grains, this friction will remove the bran and acne on the surface of the rice grains. On the other hand, during the friction extrusion process, the starch layer on the surface of white rice undergoes gelatinization and crystallization, forming a bright protective film to improve surface smoothness and prolong the storage time of the rice in the later stage. The fine rice bran and chips generated during the polishing process are discharged from the machine through the rice sieve holes under the action of strong negative pressure suction.
Characteristics of Rice Polishing Machine
1. The rice surface polished by automatic water adding thermostat and multi position spray device is smooth and bright. Greatly increased the commercial value of rice.
2. Novel design, beautiful appearance, convenient operation, stable and reliable mechanical performance.
3. Based on the shape, length, moisture content, and quality of rice, stabilize different polishing schemes to improve the professional performance of the polishing machine.
4. Increase the commercial value of rice and extend its shelf life.
5. The built-in single roll polishing machine has the characteristics of small footprint and convenient installation and operation.