Wastewater purification device

The utility model relates to the technical field of wastewater purification, in particular to a wastewater purification device which comprises a support plate, one side of the supporting plate is fixedly connected with a wastewater stirring box; a circular rotating groove is formed in the top of the wastewater stirring tank, and a filter cartridge is rotationally connected into the circular rotating groove; one end of the filter cartridge is fixedly connected with the extension cartridge; a spiral block is fixedly connected in the filter cartridge; a first gear is fixedly connected to the outer side of the filter cartridge; the first gear is in meshed connection with a second gear; the second gear is fixedly connected with a connecting rod; one end of the connecting rod is fixedly connected with a motor; when wastewater flows through the filter cartridge, large impurities can be placed in the filter cartridge, a spiral block is arranged in the filter cartridge, the filter cartridge rotates to drive the spiral