Dual-purpose oil removing device for residence public flue

The invention discloses a flue oil removing device, and provides a dual-purpose oil removing device for a residence public flue. The dual-purpose oil removing device is simple in structure, capable of effectively separating harmful substances in kitchen cooking fume and reducing atmospheric contamination, environment-friendly and capable of saving energy. The technical problems that in the prior art, the kitchen cooking fume is directly discharged into the atmosphere, consequently, the environment pollution is serious, and the health and living quality of people are directly affected are solved. The dual-purpose oil removing device comprises a main flue body arranged at a smoke outlet in a butt joint manner, a rotating main shaft is arranged in an inlet of the main flue body and sleeved with a mesh disc assembly, and the mesh disc assembly is arranged in the inlet of the main flue body and synchronously rotates with the rotating main shaft. An outlet of the main flue body is connected with an inlet of a turning flue body through a centrifugal fan, and the part, corresponding to the outlet of the main flue body, of the centrifugal fan is covered with a photolysis device modulator tube.