Installation height adjusting device of exhaust hood

The utility model relates to the technical field of exhaust hood accessories, in particular to an installation height adjusting device of an exhaust hood. The installation height of an existing exhaust hood is fixed to be a certain value, the exhaust hood cannot be adjusted up and down during installation, the height and the customized length need to be calculated when the exhaust hood is purchased, the operation is troublesome, the application range is small, and the relative cost is high. An installation height adjusting device of an exhaust hood comprises a fixed bottom plate and further comprises a sliding positioning rod connected with the fixed bottom plate, the sliding positioning rod is movably or fixedly connected with the fixed bottom plate, and a fixed sleeve seat is connected between the sliding positioning rod and a pipe fitting. The plurality of connecting pieces are fixed on the bottom plate; the fixing sleeve base is of an integrated structure, and reinforcing ribs are arranged at multiple pos