▎ 摘　　要

NOVELTY - The utility model claims a graphene composite filtration membrane, comprising an upper locating frame, composite filter film and the lower locating frame, said composite filter membrane is located between the upper locating frame and a lower locating frame; the outer edge of the lower end of the upper locating frame is fixedly mounted with a locating bump, the composite filtration membrane comprises a graphene filtering layer, filtering layer and secondary filtering layer, the sterilizing layer on graphene filtering layer and secondary filtering layer between the outer edge of the graphene layer is located on the second level filter layer above the composite filter membrane is set with a locating groove; the upper end surface of the lower positioning frame is opened with a limiting groove, one side of the limiting groove is provided with a limiting hole, the outer side of the limiting hole is equipped with an elastic reset block. The graphene composite filtration membrane has reasonable design, high practicability, and greatly improves the service life of the filter membrane, and has wide popularization prospect.