Patent ID: 8528165

Claim:
A spray centrifugal dedusting fan, comprising: an air cylinder including a spray cylinder, a centrifugal cylinder and a fan cylinder which are connected with each other, and an air outlet and an air inlet connected with a left end a right end of the air cylinder respectively; the spray cylinder has a spray device installed therein; the centrifugal cylinder has a plurality of through holes arranged on wall thereof, a bracket is installed inside the centrifugal cylinder, at least one centrifugal impeller is installed on the bracket; the fan cylinder has a fan installed therein, the fan consists of a motor and an impeller; an outer cylinder is installed outside the external wall of the centrifugal cylinder, an empty chamber is arranged between the centrifugal cylinder and the outer cylinder, a lower end of the outer cylinder is connected to a water seal elbow which is communicated with the empty chamber, a trumpet-shaped first water-blocking shield is fixed at a right end inside the centrifugal cylinder, a diameter of a left port of the first water-blocking shield is smaller than that of the right port, the left port of the first water-blocking shield corresponds to the centrifugal impeller and the right port corresponds to the fan; the fan cylinder has a protective shell with a heat radiation port, a motor is installed inside the protective shell, the fan is arranged at outside the protective shell and corresponds to the right port of the first water-blocking shield, a circumferential diameter (d 4 ) of the protective shell is equal to the hub diameter (d 1 ) of the fan and a left port diameter (d 2 ) of the first water-blocking shield.