The magnetic transmission vortex pump adopts a magnetic transmission structure to ensure absolute sealing of the pump, achieving leak free transportation of corrosive, flammable, explosive, toxic and other chemical media. 1. High head, small flow rate, and specific speed are generally less than 40; 2. Simple structure, small size, and light weight; 3. Equipped with a self-lubricating circuit to improve the service life of sliding bearings; 4. Add a cooling circuit to promptly remove magnetic eddy current heat; 5. Adopting cantilever blades to reduce radial forces on the impeller; 6. As the viscosity of the conveying medium increases, the efficiency of the pump decreases sharply, so the viscosity of the medium should not exceed 5 × 10-6m3