The color of rice is an important indicator of its quality. For consumers, rice is more white and more like it, which leads to the market price will also rise. The color of rice is affected by many factors. In addition to quality, it is also influenced by the degree of grinding of rice. The higher the grinding degree of rice is, the less the residual powder on the surface is, and the whiter the rice is. The milling degree of rice is usually represented by the mass fraction of ground meal that is removed by grinding and the total mass of brown rice. It can also be represented by the mass ratio of rice before and after grinding. In order to study this conclusion, it is verified that the rice mill can achieve its proper function during the experiment.
The grinding degree of rice is an important indicator to determine the accuracy level of rice. It not only has an important influence on the rice's sensory quality, starch gelatinization temperature, rice production rate, and pest occurrence rate, but also significantly affects the energy consumption of rice processing. . As many nutrients such as fats, minerals, and vitamins of rice concentrate mainly on the surface of rice, these nutrients are lost in large amounts as milling progresses. Increasing the degree of grinding of rice, although it can increase the whiteness of rice and obtain better economic benefits, it will also significantly reduce the nutritional value of rice and increase the energy consumption of rice processing. Therefore, the moderate milling of rice, in order to obtain a satisfactory whiteness of rice, while minimizing the nutritional losses of rice, has great economic and social value for the rice processing industry.
By examining the color analysis of rice grains processed by rice milling machines, the complex relationship between the color of rice and the degree of milling is present. The current study is not yet deep enough and comprehensive. To accurately understand the variation of surface color of rice in rice milling process It is also necessary to carry out an in-depth study on the relationship between the color of rice and the degree of milling, and give a mathematical model of its relationship in order to provide reliable information for the operation adjustment and automatic control of rice milling process and equipment. Milling time has a significant effect on the color of the rice surface. As the milling time is extended, the surface lightness (L) value of the rice first increases rapidly, then the increase gradually slows down, while the red-green tone (a) value and yellow blue The hue (b) value gradually decreases as the milling time increases. With the extension of milling time, there are significant differences between the color characteristics of three varieties of rice.
Using the rice grains tested by the rice mill for comparison, the surface lightness (L) value of rice linearly increases with decreasing whiteness, and the red-green and yellow-blue values ​​of rice surface along with roughness. The reduction of the whitening rate is linearly reduced; the relationship between the L, a and b values ​​of the surface color of the rice and the whitening rate of roughness can be described by a linear function: y=bo+b,x. Under the same grinding degree, there are significant differences between the surface color characteristics of the three varieties of rice.
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Mobile Asphalt Mixing Plant is a convenient, efficient and mobile asphalt mixture production equipment, which is suitable for all kinds of road construction and maintenance projects. It has the characteristics of strong mobility, quick installation and easy operation, and can provide high quality asphalt mixture for the project and improve the construction efficiency.
Mobile Asphalt Mixing Plant is mainly composed of mixing host, dosing system, fuel system, support device and dust removal system. Among them, the mixing machine is the core part, which is responsible for mixing various raw materials evenly to produce high-quality asphalt mixture. The dosing system is responsible for adding various raw materials to the mixing machine in a certain proportion. The fuel system powers the entire device, usually using diesel or gasoline. The support unit includes four wheels and a suspension system that allows the device to travel and operate in a variety of terrain conditions. The dust removal system is responsible for collecting dust and exhaust gas generated during the production process to ensure a clean working environment and air quality.
The working process of the mobile asphalt mixing station mainly includes the following steps: First, the various raw materials are prepared and added to the mixing machine through the dosing system. Next, the mixer machine starts to work, mixing the raw materials evenly to produce the asphalt mixture. The asphalt mixture is then transported to the construction site for road paving or maintenance. In the whole process, the operation of the mobile asphalt mixing plant is simple and convenient, and it can be quickly deployed and moved, which greatly improves the construction efficiency.
Compared with the traditional fixed asphalt mixing plant, the mobile asphalt mixing plant has the following advantages: First, it has the characteristics of strong mobility and rapid deployment, and can adapt to a variety of complex terrain and construction environment. Secondly, the installation and disassembly of the mobile asphalt mixing plant is very convenient, and the transfer and installation of the equipment can be quickly completed, reducing the construction time. In addition, the operation of the mobile asphalt mixing plant is simple and easy to maintain, reducing the skill requirements of the operator and maintenance costs.
In short, the mobile asphalt mixing plant is an efficient, convenient and mobile asphalt mixture production equipment, which is suitable for all kinds of road construction and maintenance projects. It has many advantages, can provide high quality asphalt mixture for engineering, improve construction efficiency, and has a wide range of application prospects.
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