Line concentration type autorotation spraying device

The utility model belongs to the technical field of liquid spraying, and particularly relates to a line concentration type autorotation spraying device. The device comprises a barrel, at least one spray head, a flow guide device and a fan arranged in the barrel, and is characterized in that the spray head is arranged on the outer side wall of the barrel and communicated with the interior of the barrel, the flow guide device is arranged on one side of the barrel in a penetrating mode, the device further comprises a horizontal mounting plate, and a vertical barrel mounting hole is formed in the mounting plate; a cylinder mounting hole is formed in the mounting plate, the aperture of the cylinder mounting hole is larger than the outer diameter of the cylinder, a horizontal limiting ring plate is arranged outside the cylinder, the outer diameter of the limiting ring plate is larger than the aperture of the cylinder mounting hole, the cylinder is arranged in the cylinder mounting hole of the mounting plate in a pe