Water supply pipeline filtering device

The utility model discloses a filtering device for a water supply pipeline. The filtering device comprises a pipe body, a deposition unit, a filtering unit and a coarse filter screen, wherein the interior of the pipe body is hollow, a coarse filter screen is arranged at the left end of the inner side of the pipe body, and a filter unit is arranged on the right side of the top end of the pipe body;deposition unit: each deposition unit comprises a supporting plate, a spring, a deposition pipe and a protective cover plate; the top end of the deposition pipe is connected with the left side of thebottom end of the pipe body; the interior of the deposition pipe is hollow, the bottom end of the deposition pipe is attached to the upper surface of the protective cover plate, the upper surface ofthe protective cover plate is connected with the bottom end of the spring, the top end of the spring is connected with the lower surface of the supporting plate, the supporting plate is located in thedeposition pipe, and a fast