New combination rice milling machine: what are the key points of the process of combination rice milling machine?

New Combined Rice Milling Machine: What are the process points of the combined rice mill?

The process flow of the combined rice mill can be roughly divided into several sections: raw grain receiving section, cleaning section, shelling section, coarse grain separation and grinding section, rice milling section, rice cooling section, polishing and color selection section, packaging section, etc. So,new combination of rice milling machine:What are the key points of the process of the combined rice mill?

New Combined Rice Milling Machine: What are the process points of the combined rice mill?

1. Husking section

Shelling is the shelling of rice. It is mainly through the relative movement of a pair of rubber rollers with different speeds, squeezing and tearing rice under a certain pressure to achieve the purpose of shelling, and then using the difference in the suspension speed of rice and rice husk, the rice mixture is separated from the rice husk by air suction. During the shelling process, there are some cracked grains and incomplete grains in the rice, and some grains are crushed and broken due to the pressure between the rollers on the rice.

2. Rough separation and roughening section

The moisture content of the brown rice before it enters the rice mill also affects the broken rice rate. When the water content is low, the pressure required for whitening becomes larger, which will inevitably increase the broken rice; too much water, loose rice quality, and reduced strength will also increase the broken rice. In practice, broken rice can be reduced by tempering. The tempering of brown rice is mainly to moisten and coarsen the brown rice, which can soften the skin layer, reduce the binding force between the skin layer and endosperm, and also reduce the temperature of the brown rice (usually the water temperature is lower than the room temperature), thereby reducing the pressure in the rice milling chamber, thereby reducing The broken rice produced during the rice milling process.

3. Rice milling section

Rice milling is to grind rice grains with sand rollers and iron rollers to peel off the skin of brown rice, thus achieving the purpose of carbon white. Although brown rice is more nutritious than rice, the cellulose content of brown rice cortex is much higher than that of endosperm, and cooking rice directly tastes bad, so brown rice is generally not used for cooking. Rice milling mainly uses the friction generated by the relative movement between the rice grains, between the rice grains and the white roller, between the rice grains and the rice sieve, and the cutting effect of the dense sand blade on the brown rice skin to achieve the effect of wiping off the brown rice skin and grinding it flat.

4. Liangmi section

After several times of rice milling, the temperature will be much higher than the room temperature. If you enter the back polishing section without cooling, it will inevitably cause the rice to burst, increase the broken rice, and affect the quality of the finished product. Cooling the rice is to prevent the rice from bursting due to drastic changes in temperature and humidity and reduce broken rice. In addition, after the rice is cooled, the temperature of the rice will not be too high during polishing, which is more suitable for the gelatinization of the starch on the surface of the rice to form a bright colloidal film.

5. Polishing and color selection section

Polishing is to remove the bran powder attached to the surface of the white rice, so that the surface of the white rice is smooth, and the appearance and color of the finished rice are improved. It works by atomizing water into tiny droplets that attach to the surface of white rice. Through the friction between the rice grains and between the rice grains and the polishing roller sieve cylinder, the purpose of removing the bran powder and making the white rice smooth is achieved.

6. Production process control and other links

Maintaining flow balance in the production process is an important guarantee for stable production and reducing broken rice. Because a lot of broken rice is produced during the process. There are many reasons for the imbalance of flow in the production process, such as uneven raw materials, poor processing characteristics of raw materials, and lack of necessary buffer storage.