Air-filtering cleaner

The invention relates to a hollow-filtering cleaner, comprising box (1), driving shaft (2), driven shaft (3), clapboard (4 and 5) and wind draining pipe (6). Thereinto, two clapboards set symmetrically and inclined down are set in said hollow-filtering cleaner and the angle between clapboard and horizontal direction is 5degree to 50degree. Three sides of the clapboard are fixed with inner wall of box and there is gap between two clapboards. Driving and driven shafts are located above said two clapboards respectively and set horizontally on the clapboard direction. A group and multiple groups of rubber wheels (7) are set on the driving shaft and bearings (8) are set on the driven shaft. Wind draining pipe is set above driving and driven shafts and has the equal distance to driving and driven shafts. The hollow-filtering cleaner can not only save labor and time but also make dust discharge accord with the standard of environmental protection. It prolongs the usage period of hollow-filtering greatly.