Dust collector for air cleaning

The utility model discloses a dust collector for air cleaning, which comprises a cylindrical shell and a fan, wherein the side wall of the cylindrical shell is provided with an air inlet, the fan is arranged at the air inlet, the inner wall at the air inlet of the shell is provided with a large baffle plate, small baffle plates are also uniformly distributed on the inner wall of the shell, the inclined directions of the large and small baffle plates are same and both has a certain inclined angle with the radius direction of the shell; and the upper part of the shell is provided with an exhaust pipe, the lower end of the exhaust pipe extends to the middle lower part of the shell, the lower end face of the shell is provided with a dust collecting hopper, and the dust collecting hopper is dead against the lower end of the exhaust pipe. By using the dust collector for air cleaning disclosed by the utility model, based on a baffle-plate reverse-flow principle, dust falls into the dust collecting hopper at the lowe