Three-roll mill is one of the most commonly used pulp grinding equipment. It consists mainly of roller, discharging of the stopper device, transfer device, device, transmission device and frame components. Three-roll mill is one of the most commonly used pulp grinding equipment. It consists mainly of roller, discharging of the stopper device, transfer device, device, transmission device and frame components. Below its structure and its working principles are described in detail. Roller is a place for material generated in squeeze. Stopper device (copper plate), is located in the Middle, between a slow roll, brass bezel position can be adjusted by screws, its role is to prevent when feeding material into the ends of the roller bearings. NIP adjustment function is to adjust the distance between the rollers and pressing force, change the material’s shear and compression to meet the ground requirements. Discharging device (blade), steel, posted on the fast roller surface,
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whose role is to paste on the roller surface scraping. Pulp in order to facilitate rapid roll surface scrape, its cutting edge position should be located above the roll axis. Gear motor, gear reducer, coupling, gear ratio, and the roller whose role is to provide the required torque and rotational speed. Electric motors via V-belt transmission, after the gearbox directly from coupling into medium-speed roller, then speed ratio gears to drive fast and slow rollers rotate in the same direction. Usually three roller speed ratio for 1:3:9. Rack is roll, pitch control devices and other supporting components. Three-roll mill works, mill work, driven by three of roller in gearing, respectively at a certain ratio to achieve slow, medium and fast rotation. In three-roll mill, because the rollers opposite the turn, and exists between pressure and velocity, so that those poor dispersion of material by roller compression and shearing action. Material first obtaining, a slow roller between the rolling, then enters, quickly roll gap to continue to grind, eventually covering the fast roller, knife blade scraping. In order to achieve an even grind finer, materials typically require ground two or three times, determination of fineness of grinding fineness by plate and grinding fineness usually paste should achieve 50um.
