Residue filtering device for sewage treatment

The utility model belongs to the technical field of sewage treatment, and provides a sewage treatment residue filtering device which comprises a residue filtering cylinder, an adjusting mechanism and a residue discharging assembly. According to the size of the filtered residues, the filter plate with the filter holes of the appropriate size is clamped in the through groove by adjusting the adjusting assembly, the filter plate with the filter holes of different sizes can be matched with the through groove through the adjusting assembly, and the residues of different sizes can be filtered out conveniently according to requirements. In the filtering process, sewage flows into the residue filtering cavity from the liquid inlet pipe, the sewage in the residue filtering cavity flows into the water pool through the filtering holes in the filtering plate, at the moment, residues larger than the filtering holes in the sewage are left in the filtering cavity under blocking of the filtering holes, then the residue disch