Mechanical Knowledge Base: Construction of Dry Mill Wheels

Top-drive continuously operated disc-rotating dry wheel mill. The mill plate is fixed on the vertical shaft and it is rotated by the motor after deceleration through a speed reducer, a pulley and a pair of bevel gears. There are two rollers on the plate, which are respectively movably mounted on the horizontal axis. Both ends of the horizontal shaft are supported on two bearings in the side brackets, and the middle part is movably fitted on the vertical shaft. The housing of the bearing can slide up and down along the guide groove in the side support, so that the height of the roller can be automatically adjusted up and down. The material entering the machine is sent to the underside of the drum by a scraper mounted on the beam for repeated comminution. The material to be crushed is thrown on the outer ring screen of the mill pan due to centrifugal force and rolling action. The qualified material leaks into the arc groove on the fixed chassis and is then scraped by the discharge scraper rotating with the mill pan to the discharge port. Remove it. Unqualified materials are fed to the grinding wheel by the feeding scraper on the screen surface and continue to be crushed. The particle size of the product can be controlled by adjusting the mesh size and feed size. Dry milling dust is too large. Wet mills are now used, but wet grinding is not as good as dry milling.