Industrial dustproof centrifugal fan

The utility model discloses an industrial dustproof centrifugal fan. The utility model discloses a centrifugal fan and belongs to the technical field of centrifugal fans, the utility model discloses an industrial dustproof centrifugal fan. The centrifugal fan comprises a centrifugal fan body, an air inlet is dug in the front end of the centrifugal fan body. The inner wall of the air inlet is connected with a dustproof net; the left end of the dustproof net is fixedly connected with a positioning rod; a protective plate is arranged at the left end of the dustproof net; the protection plate is in contact with the dustproof net; through holes are formed in the surface of the protection plate; the positioning rod is matched with the through hole; the left end of the protection plate is fixedlyconnected with a limiting sleeve; the limiting sleeve is flush with the through hole; the positioning rod is positioned in the limiting sleeve; four evenly-distributed clamping blocks are fixedly connected to the outer end o