Waste gas treatment device for aero-engine

The invention relates to the technical field of separation equipment, in particular to a waste gas treatment device for an aero-engine, the waste gas treatment device comprises a pipe body and a filter pressing ring, a conical filter screen is coaxially arranged in the pipe body, the lower end of the filter screen is connected with a ventilation inner pipe, and a scraper rotating around the axial direction of the filter screen is arranged at the outer end of the filter screen; the scraping piece is attached to the net face of the filter net and used for scraping off oil sludge attached to the filter net, the filter pressing ring is coaxially arranged at the lower end of the filter net and arranged on the outer side of the ventilation inner pipe in a sleeving mode, and an annular space allowing the oil sludge to fall in is formed by a gap between the filter pressing ring and the ventilation inner pipe. By arranging the conical filter screen, the contact area of the filter screen and oil-containing airflow can