▎ 摘　　要

NOVELTY - Pressure vessel tool comprises device body (1), a servo motor (2), a stirring shaft (4), a stirring paddle (5), and an annular water tank (7), where servo motor is mounted on the top end of the apparatus body, and the motor shaft of the servo motor is connected to the stirring shaft through a coupling, and the outside of the stirring shaft is uniformly disposed. The pressure gage is mounted on the top of one side of the unit body of servo motor, and top of the other side of the device body of servo motor is mounted on an inner wall of the apparatus body. The controller is fixed on an outer wall of the apparatus body, and apparatus body is connected to one side of first electromagnetic valve which is mounted on the exhaust pipe. The annular water tank is fixed on an outer wall of the device body. The heater is mounted on one side of annular water tank, and a water supply port is provided on other side of the annular water tank. USE - Pressure vessel tool for graphene production. ADVANTAGE - The pressure vessel tool is convenient for operator to operate, adjusts temperature of the production process, and it is used to heat or refrigerate to control temperature. DESCRIPTION OF DRAWING(S) - The drawing shows schematic view of pressure vessel tool. Device body (1) Servo motor (2) Stirring shaft (4) Stirring paddle (5) Tirring paddle (5) Annular water tank (7)