Small sewage filtering device capable of being automatically cleaned

The utility model relates to the technical field of sewage treatment, and discloses a small-sized sewage filtering device capable of being automatically cleaned, which comprises a filtering device shell with supporting legs, a rotating shaft, a rotating motor, a gravity sensor and a filtering cavity, a partition plate is arranged at the bottom of the filtering device shell and divides the bottom of the filtering device shell into two parts, and the two parts are provided with a water outlet pipe A and a water outlet pipe B respectively; a horizontally-arranged rotating shaft is arranged in the middle of the filtering device shell and driven by a rotating motor, filtering cavities are formed in the two sides of the rotating shaft and symmetrically arranged in an up-and-down crossed mode, and the rotating shaft drives the filtering cavities to rotate through a small-hole-diameter filtering net. A sewage pipe and an industrial water pipe are arranged at the top of the filtering device shell, and a plurality of w