Wastewater treatment and purification device

The utility model relates to the technical field of purification devices, in particular to a wastewater treatment and purification device which comprises a purification assembly, the purifying assembly comprises a purifying box, a filtering box, a water inlet pipe, a filtering plate, a chemical adding pipe, a rotating shaft, a stirring plate, a stirring motor, a connecting shaft, a driving bevel gear, a driven bevel gear, a collecting box, a screw rod, a cleaning motor, a sliding plate, a sleeve rod, a sleeve, a scraping plate, a spring and a nut seat. The upper surface of the filter box is communicated with a water inlet pipe, and the bottom of the inner side wall of the filter box is fixedly connected with a filter plate. When the sewage treatment device works, wastewater is introduced into the filter tank along the water inlet pipe, solid impurities in the wastewater are filtered by the filter plate and are remained on the surface of the filter plate, the residual wastewater falls into the purification tan