▎ 摘　　要

NOVELTY - The utility model claims a graphene removing acid nano-filtration membrane separation device, comprising a fixed bottom plate, a nano-filtration membrane filter cylinder, a connecting ring and a water port, the two connecting rings are symmetrically provided with an L-shaped plate, and the L-shaped plate is fixedly installed on the top surface of the fixing bottom plate, the two connecting ring centres are connected with a first hard pipeline, the two water ports are fixedly welded with a connecting plate, and the connecting plate is fixedly installed with a nut and a guide sliding sleeve, one end of the two water ports is connected with a second hard pipeline, and the second hard pipeline is connected with a flexible pipeline, the top surface of the fixed bottom plate is fixedly welded with a first fixing plate and a second fixing plate, between the first fixing plate and the second fixing plate is provided with screw thread rod shaft, and one end screw thread rod shaft is fixedly mounted with a hand-operated wheel, and the shaft of screw thread rod and the nut are meshing. Beneficial effects: The utility model effectively improves the nano-filtration membrane filter cylinder replacing mounting efficiency of graphene acid-removing nanofiltration membrane separation device.