The utility model discloses a
biomass fuel particle
crusher which comprises a box body, a crushing roller
assembly is arranged in the box body, a drainage
assembly is arranged below the crushing roller
assembly, a
metal impurity removing mechanism is arranged below the drainage assembly, and particles crushed by the crushing roller assembly can fall on a first drainage plate. The particles flow into the first drainage plate and flow into the high-position end of the second drainage plate along the first drainage plate, the particles flowing into the high-position end of the second drainage plate can flow onto the roller along the second drainage plate and fall off from one side of the roller, meanwhile,
metal impurities in the particles can be attracted to the outer wall of the roller under the attraction effect of the
magnet block, and the roller can be driven by the driving device to rotate.
Metal impurities adsorbed on the outer wall of the roller are conveyed to the other side of the roller, when the
metal impurities are conveyed to the other side of the roller, the attraction force of the
magnet blocks to the
metal impurities is reduced, the
metal impurities can fall off from the other side of the roller under the action of the gravity of the
metal impurities, and then the metal impurities in particles can be separated out so as to prevent the metal impurities from affecting subsequent
granulation treatment.