Rice is a staple food beloved by people all over the world. Against the backdrop of a continuously increasing world population, rice has become an indispensable staple food in people's lives, and the issue of rice processing and production has also received high attention from countries around the world. The rational use of rice mills can enhance the efficiency of rice processing and plays a very important role in promoting economic development, liberating labor force and increasing economic income. Rice mills that can retain embryos are the future development trend.

The current embryo preservation technology of rice mills and the existing problems

The application of the existing rice mill embryo preservation technology is essentially the process of grinding out the rice bran layer and the aleurone layer, but there are certain differences in the whitening process, and the whitening principle is basically the same. The structure of the existing rice mill is mainly composed of a white rice milling bin surrounded by white rollers and sieve plates. The rice mill will also be equipped with corresponding power devices, transmission devices and feeding and discharging ports. There is a certain gap between the drum and the screen drum wall, forming a circular cylindrical space. After brown rice enters the whitening chamber through the collection port, it undergoes intense whitening movements, causing the bran layer and aleurone layer to be crushed out. The currently used whitening rollers mainly include iron rollers and sand rollers. The surface of the iron roller is marked with convex straight ribs or inclined ribs, while the surface of the sand roller is smooth or has grooves. According to the different installation methods of the white rollers, rice mills can be classified into horizontal rice mills and vertical rice mills. The existing rice mills generally have problems such as a large amount of broken rice, low embryo retention rate and high starch content in rice bran. At the same time, during the whitening process, some dust and rice bran will be produced. If not cleaned up in time, it will cause grinding. The blockage of the rice machine passage affects the normal operation of the machine, and the quality of the white rice is not high. In the future development of rice mills, the development of embryo rice mills is the mainstream trend.

The development trend of rice milling machines - embryo retention rice milling machines

The ordinary rice ground by the rice mill can no longer meet people's needs, while the nutritional value of the germ rice is higher. The embryo rice machine is one of the future development trends. The processing principle of brown rice, the variety of brown rice, the characteristics of raw materials, the freshness of the rice, the number of grinding passes of the rice mill, the air holes of the roller conveyor, the length of the roller, and the speed of the roller all affect the yield and quality of the germ rice. Therefore, in order to further enhance the whitening effect of the bacteria-preserving rice machine and increase the bacteria-retaining rate of brown rice, when developing the bacteria-preserving machine, the Five Grains Station should conduct comprehensive optimization from the above aspects and adjust the parameters of the traditional rice mill. And structural changes. For instance, reducing the pressure in the whitening chamber, arranging the brown rice in an orderly manner inside the chamber, and minimizing the churning of the brown rice can all achieve the goal of increasing the embryo retention rate. The bactericidal rice machine of the present invention has the advantages of rapid whitening and multi-path whitening when in operation. Meanwhile, the mycel-preserving rice machine should adopt a combined application method of sand rollers and iron rollers. First, grind with a sand roller, then use iron. The drum is used for wiping and whitening. During the whitening process, the blower system guides the rice husks under negative pressure, reducing the problem of clogging in the rice milling channels.