Powder fineness is a term used in the inspection of grain and oil. It is defined in the national standard for GB5507-85 "Grain Size Measurement Method for Grain Oil Inspection". Powder thickness refers to the size of flour powder. It is based on the mass fraction of the sample that remains on the sieve level. The modern method for determining the fineness of powders is to use powder test sieves, which are professional instruments for determining the thickness of powders.
The principle of the powder screening test is actually the basic principle of determining the thickness of powders. The samples are separated on different sieves and the different particle samples are separated from each other. Then the powder type food is calculated based on the amount of residue on the sieve. Thickness. The advantage of using a powder tester to measure the fineness of powders to carry out tests is obvious compared to the traditional method. First, the powder test sieve is also called an electric powder test sieve and it is screened in an electric way. Therefore, it will save time and effort, and the screening will be more even. Secondly, from the screening effect point of view, the use of powder screening screening, can effectively separate the different particle samples, thereby improving the accuracy of the results of the measurement of powder thickness, but also help the relevant departments to truly evaluate the wheat flour and other classification food the quality of.
The use of powder screening to determine the thickness of powdered food grain is generally divided into four steps, namely, installation, determination, weighing and calculation of the results, the main application process of powder screening in the installation and determination of these two steps. The installation is based on the purpose of the measurement, select the screen that meets the required specifications, and follow the order of installation; and the determination process is relatively easy, put the sample, fix the screen, set the time, turn on the power, powder screening can The sieving work is automatically started until the different particle samples are completely separated. Therefore, in general, the pulverized sieve is a kind of professional instrument for measuring the coarseness and fineness of powders with simple operation and high practicality. It is widely used in the production, processing and storage of modern powdered grains.
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