The Flour Mill is a main equipment for grinding wheat or grains, with speed difference and relative rotation of the roller. When the material through a certain distance between the two rollers, the endosperm scraping from wheat skin, and ground into flour. The flour mill noise arising therefrom. In the quality of survival in the market competition, it is very important to reduce the noise. If the design of the flour mill body structure is unreasonable and the processing precision is not high, it will produce noise. When the two parallel rollers rotate in opposite directions, the rolling distance of general milling system is 0.1~0.8mm, the heart grinding system is 0.01~0.05mm. When the radial pulsation is relatively large, then the operation will not stable. Two grinding rollers are not flat, and grinding operation is not stable thus produce noise. The grinding roller is made up of both ends of the roll body is pressed into the shaft machining, the outer layer is chilled alloy cast iron with high hardness, the inner layer is gray.

Roller body is longer, the two ends of the hole processing and the middle is not processed, due to the machining error of the roller and the material of the roller body is not uniform, the grinding roller is not balanced and the vibration is generated. The accuracy of the roller bearing is not high, and the design of the parts and the structure of the bearing is unreasonable, all these reason will cause bearing rotation accuracy is not high, short lived and noise increased.

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