Waste circuit board dust collecting and filtering device

The utility model discloses a waste circuit board dust collecting and filtering device which comprises a coarse separation box, a fine separation box communicated with the coarse separation box is welded to the outer wall of the top of the coarse separation box, a dust collecting assembly is fixedly installed at the bottom of the coarse separation box, and inclined guide plates are welded to the inner walls of the two sides of the bottom of the coarse separation box. A flaring is fixedly installed between the two flow guide plates, an air inlet pipe is welded to the outer wall of the bottom of the flaring, material collecting pipes are welded to the outer walls of the two sides of the bottom of the coarse separation box, fixing bases are welded to the inner walls of the two sides of the fine separation box, and filter plates are fixedly installed in the fixing bases; and a limiting rod fixedly mounted on the inner wall of the fine separation box is arranged at the bottom of the filter plate. Through the arran