▎ 摘　　要

NOVELTY - The utility model claims a graphene technology field, and claims a composite filter with graphene detection, comprising a machine body, the machine body is fixedly connected with a pressure pipe, the middle part of the machine body is fixedly connected with a discharging pipe; the inner wall of the machine body is connected with a graphene composite filter below the graphene composite filter screen is fixedly connected with a negative pressure plate is on the inner wall of the machine body, the upper surface of the negative pressure plate is provided with a liquid outlet, one side of the machine body far away from the pressure relief pipe is fixedly connected with a suction pipe. the top of the suction pipe is connected with a negative pressure pipe. the composite filter, with a detecting graphene through is fixed on the inner wall of the machine body is connected with the graphene composite filter screen to achieve the effect of filtering and separating the detection solution, when lower surface and upper surface of the negative pressure plate produce pressure difference, the graphene composite solution leaking from the liquid inlet filter screen after filtering and separating, using a filtration of the graphene is convenient and good separation effect.