Nature air swept type permanent magnetism stirrer with eccentric magnetic field structure

The invention relates to a natural air cooling type permanent magnetic stirrer with an eccentric magnetic field structure. The stirrer comprises a main motor, a driving device, a main shaft, a magnet steel tray, magnet steel sets, a magnet steel cover and a magnet steel outer cover, wherein the magnet steel tray is arranged on the upper end of the main shaft, air holes and rotary blades are arranged on the magnet steel tray, a magnet steel fixing plate is also arranged on the magnet steel tray, a chute is arranged on the magnet steel fixing plate, and two or three magnet steel sets are fixed in the magnet steel cover. The main shaft is perpendicular to the horizontal plane, and the magnet steel tray is placed horizontally; and the lower end of the main shaft is connected with one end of the driving device, and the other end of the driving device is connected with the main motor. The stirrer has the advantages that the stirrer improves the stirring effect; the air holes and rotary blades which are arranged on