▎ 摘　　要

NOVELTY - The device has a box body. The centre of a fixing ring (2) is fixedly connected with a rotating cylinder (4). The top portion of the rotating cylinder is provided with a cylinder cover (5). The bottom of the cylinder cover is provided with an isolation cylinder (6). The bottom of the connecting pipe is connected with a first electromagnetic valve (20). One side of the bottom of the inner wall of the box body is fixedly connected with a second motor (22). The top of a rotating shaft (25) is fixedly connected with a stirring blade (26). The surface of the rotating shaft is fixedly connected with the bottom of a fourth gear (27). The bottom of the box body is fixedly connected with of the annular supporting plate (28). The bottom end of the rotating shaft is provided with an annular plate. The bottom of the annular plate and the bottom of the inner wall of the box body is provided with a first electric telescopic rod (30). USE - Device for preparing graphene suspension liquid. Uses include but are not limited to material learning, micro-nano processing, energy, biomedicine and drug delivery. ADVANTAGE - The device is capable of quickly realizing preparing graphene oxide suspension, and separating the impurity and the suspension liquid after centrifuging by the isolation cylinder, and matched with the cylinder cover and the rotating cylinder sealing, filling nitrogen through the first feeding pipe, adding the reducing agent by the second feeding pipe. The whole preparation process is finished in one device, which avoids the transfer of the suspension, improves the preparation efficiency, and at the same time, the suspension with impurity can be treated for the second time. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene suspension liquid. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the sealing state of the inner cylinder cover and the rotating cylinder of a device for preparing graphene suspension liquid. Fixing seat (2) Rotating cylinder (4) Cylinder cover (5) Separating cylinder (6) First inner gear ring (10) Connecting frame (14) Heater (16) Ultrasonic generator (17) First electromagnetic valve (20) Second motor (22) Rotating shaft (25) Stirring blade (26) Fourth gear (27) Annular supporting plate (28) First electric telescopic rod (30) Fixing cylinder (32) Sliding cylinder (33) Hopper (34) Second electric telescopic rod (35) Fixing block (36) Third motor (38) Screw rod (41) Guide rod (43)