Filtering device for dust conveying pipeline

The utility model discloses a filtering device for a dust conveying pipeline, which comprises a filtering pipe horizontally connected to the conveying pipeline. The front end of the filter pipe is connected with a filter screen, the middle of the filter pipe is connected with a dust collecting pipe vertically extending downwards, the dust collecting pipe is communicated with the filter pipe, a dust collecting chamber is formed at the bottom of the dust collecting pipe, and a dust collecting groove is formed in the dust collecting chamber and connected with the dust collecting pipe in a drawer mode; a sealing plate is arranged at the top of the dust collecting pipe, the end, away from the filter screen, of the sealing plate is hinged to the inner wall of the dust collecting pipe through a rotating shaft, and the sealing plate seals the top of the dust collecting pipe when rotating to be horizontal; the rotating shaft is fixedly connected with the sealing plate, and the two ends of the rotating shaft penetrate