Adopting static seal structure, the stirrer and the motor drive are connected by magnetic coupling, due to its contactless torque transfer, replacing dynamic seal with static seal, it can completely solve the leakage problem of stirring, and make the whole medium and stirring parts work in an absolutely sealed state, therefore, it is more suitable to be used for all kinds of flammable, explosive, poisonous, precious mediums and other chemical mediums with strong penetration. Stirring reaction, is petroleum, chemical, organic synthesis, polymer materials polymerization, food and other processes such as sulfurization, fluoridation, oxidation and other reactions of the most ideal non-leakage reaction equipment.