Smoke sensing alarm device

The invention discloses a smoke sensing alarm device, and relates to the technical field of fire fighting equipment, the smoke sensing alarm device comprises a machine body and a mounting seat, an insect-proof net is arranged between the machine body and the mounting seat, the insect-proof net is provided with a plurality of vent holes, a mounting column is provided with a dredging column, a rotating shaft is provided with a connecting column, the connecting column is provided with a driving ring, and the driving ring is provided with a driving block. The machine body is provided with an elastic driving piece, a plurality of stirring blocks are evenly arranged on the inner circumferential side of the insect-proof net at intervals in the circumferential direction, a pushing column perpendicular to the power column slides in the driving ring, and the power column completely enters the driving ring when being inserted into the inserting groove. The driving ring is provided with an elastic pushing piece used for