Novel heat dissipation safety cover of positive displacement fan

The utility model discloses a novel heat dissipation safety cover of a positive displacement fan, which comprises a working platform used for placing the positive displacement fan, the positive displacement fan which is provided with an air inlet capable of being matched with the positive displacement fan and covers the working platform, and a surrounding cover body which is used for driving a driving motor of the positive displacement fan, the side wall of the enclosure cover body in the vertical direction is of an inner-outer double-layer structure, a cooling pipeline extending in a winding mode in the extending direction of the side wall of the enclosure cover body is arranged in the enclosure cover body between the inner-outer double-layer structure, an opening is formed in the side wall of the enclosure cover body corresponding to the position where the positive displacement fan and the shaft head of the driving motor are arranged, and a protective net is arranged. By the adoption of the design scheme, t