Multifunctional dosing and VOC cleaning primary air fan device

The utility model relates to a multifunctional dosing and cleaning VOC (volatile organic compound) primary fan device which is characterized by structurally comprising an air pipe, a butterfly valve, a flexible joint, a fan impeller, a motor, a fan, a liquid medicine pipeline, a control valve and a tank, the air pipe is connected with the fan through the butterfly valve and the flexible joint, and the fan impeller is arranged in the fan; wherein a butterfly valve pesticide spraying opening is formed in the butterfly valve, an impeller pesticide spraying opening is formed in the fan, cleaning liquid is stored in the tank, and a cleaning liquid outlet of the tank is connected with the butterfly valve pesticide spraying opening and the impeller pesticide spraying opening through pesticide liquid pipelines. The utility model has the advantages that the butterfly valve and the soft connection equipment do not need to be disassembled subsequently after installation, the labor is greatly reduced, the potential safet