Gravitational dust collection put-back device

The utility model relates to a gravitational dust collection put-back device. The device comprises a gravitational dust collection hopper, a material collection hopper and a horizontal wringing wheel, wherein the material collection hopper is arranged below the gravitational dust collection hopper and connected with the horizontal wringing wheel; the gravitational dust collection hopper is provided with two discharging holes; each discharging hole is connected with two ash discharging valves in series; the outlets of the ash discharging valves are connected with feeders; the output ends of the two feeders are both connected to the material collection hopper; the two sides of the material collection hopper are connected with a nitrogen pipeline; a discharging hole of the material collection hopper is connected with the horizontal wringing wheel; a motor is arranged at one end of the horizontal wringing wheel; the other end of the horizontal wringing wheel is a discharging end B; the two ends of the horizontal wringing wheel and the two ends of the feeders are both connected with the nitrogen pipeline. The device disclosed by the utility model has the advantages of solving the problems that damages are caused because coal ash enters a horizontal stirring wheel shaft and a bearing of an ash discharging device and the maintenance rate is high because of ash leakage of shaft necks of the feeders, prolonging the service life of equipment, protecting the sanitation of a scene environment and improving the safety of the equipment in maintenance.