Convection retarding mechanism of centrifugal fan

The utility model discloses a centrifugal fan convection retarding mechanism which comprises a fan and a retarding mechanism arranged on the fan, the fan comprises a main shaft and a plurality of blades arranged at the edge position of the main shaft, and the retarding mechanism is arranged at the position, surrounded by the blades, of the center of the main shaft. The retarding mechanism comprises a plurality of air nozzles facing the blades and a rotating table arranged at the bottoms of the air nozzles, the axis of the rotating table coincides with the axis of the main shaft, an air pump and an air pipe connected with the outside are arranged at the bottom of the rotating table, and the air nozzles lead to the output end of the same air pump. The centrifugal fan is provided with a plurality of air nozzles, the air nozzles are arranged in the middle of the centrifugal fan, adjusting plates are arranged between the adjacent air nozzles, the breadth of the adjusting plates is perpendicular to the axis of the