Ventilation pipeline waste liquid collecting device

The utility model relates to the technical field of ventilation pipeline waste liquid collection, in particular to a ventilation pipeline waste liquid collection device which comprises a fixing cylinder, a sleeve is fixedly connected to the front end of the fixing cylinder, a rotating ring is rotationally connected to the outer side wall of the sleeve, an empty groove is formed in the sleeve, and a fixing disc is fixedly connected to the inner side wall of the empty groove. The outer wall of the fixing disc is rotationally connected with a lantern ring, and one end of the lantern ring is rotationally connected with a connecting block. Through the arrangement of the sleeve, the rotating ring, the lantern ring, the connecting block, the telescopic groove and the clamping block, after a worker sleeves one end of a ventilation pipeline with the sleeve and rotates the rotating ring, the rotating ring rotates to drive the lantern ring to rotate, the lantern ring rotates to drive the connecting block to rotate, and