Rotary gear type filler

The utility model particularly relates to a rotary gear type filler which is composed of a plurality of rings, the integral structure of the filler is in a gear type, the inner ring is a plurality of concentric pinions with different diameters, the outer ring is a bull gear with uniformly distributed fan blades, a fixed short rod support is arranged between the inner ring gear and the outer ring gear, and a center hole is formed in the center of the inner ring gear and the outer ring gear; the configuration of the inner ring gear and the outer ring fan blades of the rotary gear type filler improves the water passing performance, so that the filler is easy to realize a fluidized state, and the problems of power consumption, blockage and short flow are greatly reduced; the specific surface area is increased due to the multi-circle appearance, the biomass attached to the surface of the filler is increased, the pollutant removal rate is effectively improved, the starting time of the reactor is shortened, and the