Air curtain dust hood

An air curtain dust hood relates to the technical field of dust removal and comprises a hood body, the hood body comprises a cylindrical section, and the lower end of a cylindrical shell of the cylindrical section and the small end of the upper portion of a circular-truncated-cone-shaped shell of a circular-truncated-cone-shaped shell section are fixed and connected in a penetrating mode to form a hollow shell. The dust discharging channel penetrates through the cover body from bottom to top along the central axis of the cover body and is in through connection with the small end above the conical cover; the inner wall of the circular pipe and the inner wall of the conical cover are coplanar with the outer wall of a shell of the cover body; a plurality of air outlet holes are formed in the surface of the cover body between the edge of the lower end opening of the conical cover and the edge of the lower large end of the circular-truncated-cone-shaped shell in a circumferential array manner along the central axi