Leakage filtering device for building water supply and drainage

The utility model belongs to the technical field of building water supply and drainage, and particularly relates to a leakage filtering device for building water supply and drainage, which comprises a mounting cylinder and a filtering cover movably connected to the top of the mounting cylinder, a supporting ring is connected to the bottom of the inner side of the mounting cylinder, and a hollow supporting frame is placed on the upper surface of the supporting ring. The center of the hollow supporting frame is slidably connected with a guide rod in a penetrating mode, the outer side of the guide rod is sleeved with a conical filter screen, a supporting spring is connected between the conical filter screen and the hollow supporting frame, the outer side of the guide rod is slidably sleeved with the supporting spring, and the top end of the guide rod is connected with a sealing plate; the drainage efficiency is improved by increasing the drainage amount of the filter cover, the impact of silt and water flow on t