Industrial large fan with fan blade floating dust removal function

The invention discloses an industrial large fan with a fan blade floating dust removal function. The industrial large fan comprises an annular plate, a three-blade fan, a cooling machine casing, connection plates, a screw, side plates, first motors, a first arc-shaped hole, a second arc-shaped hole, arc-shaped sponge blocks, an arc strip block, a second motor, long threaded rods and internally-threaded long steel pipes. The industrial large fan is reasonable in design, the functions of hoisting and fixing a fan body and lifting up and putting down the fan body are achieved, and the position weight can be conveniently reduced during overhauling and cleaning; the effect of hoisting the whole industrial large fan is achieved by connecting the whole industrial large fan and a top installationstructure in a plant with each other through the three internally-threaded long steel pipes, removal of floating dust on fan blades is facilitated, and the problems that cleaning staff cannot conveniently conduct cleaning and