Rice mill equipment is a large grain processing equipment, its main role is to peel and grind brown rice white, the operation is also very convenient, so in this industry, the use of the equipment is still a lot of people. So, what is the working principle and type of rice milling machine? Now give you a detailed answer to the working principle and type of rice milling machine.
How the rice mill works?
Rice mill can process rice into rice at one time, and complete the separation of rice and chaff at the same time. After understanding the structure and working principle of the rice mill, the students felt the important role of scientific and technological inventions in agricultural development and productivity improvement.
The rice milling machine is composed of a shell, a roller, a rice knife, a processing bucket, a rice screen, etc.
The rice is poured into the hopper, and the rice flows into the grinding room and the roller space; Open the power knife, with the motor as the power, drive the rice roller in the rice milling box high-speed rotation;
Due to the rotation of the roller, the rice is subjected to great mechanical force and friction, so that the husk falls off, and the husk is ground fine, and the rice grain is wiped white;
Under the action of continuous rotation of the drum, the rice grains are pushed to the exit through the screw rack on the drum, and the exit knife flows out; The chaff is discharged from the rice sieve into the bottom of the housing.
Type of rice mill
1, wipe away type rice mill
Iron roller rice mill is the most typical friction type rice mill, its working principle is to use the friction between the rice grains, between the rice grains and the grinding structure to grind brown rice white, with the advantages of fine and smooth surface of the rice grains and less starch content of the rice bran.
However, due to the large working pressure in the working chamber of the friction rice mill, the local pressure intensity will exceed the tolerance degree of the rice grains, resulting in the appearance of broken rice.
The prototype of the iron roll rice mill used in China is the horizontal iron roll rice mill introduced from Britain. Through the improvement of its structure and the optimization of its working mode, the iron roll rice mill which conforms to the practical application of China's rice processing industry has been formed.
At present, the most widely used iron roller rice mill in our country are horizontal iron roller air type rice mill and vertical iron roller rice mill, with a variety of models, suitable for different kinds of rice processing, its main equipment structure is basically the same, the same working principle.
2, grinding type rice mill
In addition to the iron roller type rice mill, the milling type rice mill is the most widely used traditional rice mill in China. The working principle is to use the rolling roller coated with diamond gravel on the surface to grind brown rice at high speed to achieve the purpose of grinding brown rice white.
A typical grinding type of rice mill is a sand roller rice mill, which is generally used to roughen brown rice in the production process and lay the foundation for subsequent rice processing.
Although this type of rice mill produces less broken rice, there is more starch content in the rice bran it grinds, and there are some differences in the accuracy of the rice, and the accuracy is uneven.
The development of the sand roller rice mill in China is relatively rapid, through the continuous optimization and improvement of the traditional rice mill, a variety of new sand roller rice mill models have been developed.
3, mixed type rice mill
The hybrid rice milling machine integrates the advantages of the above two kinds of rice milling machines, and the process effect is better, and the output and work efficiency can be effectively guaranteed.
At present, NS type spiral groove sand roller rice mill is widely used in China. Its structure is composed of sand and iron. Rice grains will gradually become thinner and softer from the feed port to the discharge port, and rice grains with reduced volume will not overgrind.
The rice grains from the sand roller white chamber will directly enter the iron roller white chamber for secondary white, so that the processed rice grains have better color and less broken rice.
4, embryo rice machine
Foreign research on embryo rice machine is mainly based on Japan, Japan's embryo rice machine industry has been in the forefront of the world.
The domestic embryo rice machine market is occupied by a large number of Japanese brands, and the embryo rice machine with independent intellectual property rights in China has not been put into mass production, and the related research and reports are relatively few.
The manufacturing process and equipment principle are mostly based on the prototype of foreign embryo rice machine, imitation manufacturing or cooperative production, the pace of development is relatively slow, and no industrialization has been formed.
Therefore, the development of rice milling machine should work in the direction of embryo rice milling machine, optimize and innovate the working principle and equipment of rice milling machine, improve the rate of embryo retention, and pay attention to independent intellectual property rights, improve the degree of attention, and gradually achieve mass production.
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