Air inlet flow channel for fan

The utility model discloses an air inlet flow channel for a fan. The air inlet flow channel comprises a flow channel body, wherein the flow channel body comprises an air inlet section and a guide section; an air inlet is formed in the air inlet section; the outer circumferential wall of the air inlet section is provided with air inlet holes used for air inlet. According to the air inlet flow channel for the fan, the air inlet holes are formed in the outer circumferential wall of the air inlet section, namely the traditional a single-side air inlet mode that the air inlet is only used for air inlet is changed into a three-dimensional air inlet mode that the air inlet and the outer circumferential wall are simultaneously used for air inlet, the defect of insufficient air inlet quantity of the air inlet can be effectively compensated, the air inlet quantity is increased, and working conditions of heating fans and cooling fans of pusher furnaces are improved.