▎ 摘　　要

NOVELTY - The utility model claims a graphene composite filter film, relating to the technical field of filtering, embedded ring, the upper and lower two surfaces of the embedded ring are adhered with an outer cover, and the outer side of the outer cover is fixed with a pull piece integrated with it; the number of the graphene filter film is two layers, and the graphene filter film are located in the embedded ring; graphene filter film; graphene filter membrane are respectively provided with a nanofiltration membrane and an ultrafiltration membrane; the graphene filter membrane are respectively located at the upper and lower two ends of the embedded ring inner space; and graphene filter membrane are located at the inner side of the outer cover; the purifying process is realized; the effect of water source filtering is improved; even under the severe condition of outdoor; it is still capable of filtering and drinking water; it solves the problem that the water source in nature is not clean, drinking water source with microbial impurities; it is easy to cause body disease; it is lack of portable water filtering device; the existing graphene filter film; only has simple filtering effect; the problem of single filtering performance.