Waterproof structure for underground through-wall pipeline

The utility model relates to the technical field of pipeline waterproofing, and discloses a waterproof structure for an underground through-wall pipeline, which comprises a main pipe and a casing pipe, the rear end of the casing pipe is fixedly connected with a wing ring, the front end of the casing pipe is fixedly connected with a wing disc, the front side of the wing disc is provided with a flange plate, the periphery of the front side of the flange plate is provided with a plurality of grooves, and the grooves are formed in the periphery of the flange plate. A groove is formed in the flange plate, a spring is arranged in the groove, a screw hole is formed in the center of the groove, a stud is in threaded connection with the interior of the screw hole, the rear end of the stud penetrates through the rear end of the flange plate and is in threaded connection with the front side of the wing plate, a protection nut is in threaded connection with the front end of the spring, and a short pipe is arranged on the