Sealing cylinder for cable through wall

The utility model discloses a sealing cylinder for cable wall penetration, which belongs to the technical field of cable installation equipment and comprises an elastic buckling frame, an insertion pipe is plugged in the elastic buckling frame, the lower end of the insertion pipe is fixedly connected with a knob, a bolt is installed in the elastic buckling frame in a threaded mode, the bolt movably penetrates through the knob, and the knob is fixedly connected with the insertion pipe. The outer portions of the insertion pipe and the elastic buckling frame are slidably sleeved with a sealing gasket, the bolt makes movable contact with the sealing gasket, and the lower portion of the insertion pipe is installed in the elastic buckling frame in a threaded mode. The elastic buckle frame comprises a first threaded ring, an elastic piece and a stop hook, after a hole is punched in a target wall, the elastic buckle frame is plugged into the hole in the wall, then the insertion pipe is inserted into the elastic buckl