Sewage purification device

The utility model discloses a sewage purification device, relates to sewage purification device field, including filter bin, fixed plate, rotary motor, connecting plate, mixing bin and connecting trough, filter bin one side welding fixed plate, filter bin one side is equipped with rotary motor through bolt extension into filter bin, connecting trough is equipped with the connecting plate, mixing bin one side is equipped with the rotary motor through the bolt. And two groups of connecting plates are arranged in the filtering bin in a sleeving manner. The connecting plate is driven by the servo motor and the threaded rod to move, so that the connecting plate and the filter screen are moved to the outer side of the filter bin, the electric push rod is separated from the limiting groove, and the connecting plate and the filter screen are driven by the rotating motor, the connecting disc, the sliding rod, the servo motor and the threaded rod to rotate; and waste residues in the filter screen are dumped, so that th