Novel main air duct device for transverse ventilation of continuous-span grain storage warehouse

The utility model discloses a novel main air duct device for transverse ventilation of a continuous span type grain storage warehouse, which relates to the technical field of ventilation accessories of grain storage warehouses, solves the problem of poor ventilation effect, and comprises a main air duct arranged along the joint of a wall surface and the ground, and the main air duct is formed by splicing a plurality of sections of arc-shaped main air duct sheets with air holes; a section partition is arranged between every two adjacent sections of main air duct sheets; an opening communicatedwith the ventilation cavity is formed in the section partition; compared with the prior art, according to the utility model, the cavity is matched with the wall surface and the ground to form the ventilation cavity; air can enter the granary from the ventilation cavity through the air holes to exchange heat with grain piles, and section partitions are designed on the main air duct pieces and provided with holes, so that t