Fluidized bed sorting experimental machine for arranging semi-automatic lifting device based on secondary bed layer

The invention discloses a fluidized bed sorting experimental machine for arranging a semi-automatic lifting device based on a secondary bed layer. The fluidized bed sorting experimental machine mainly comprises a base, an air distribution chamber, an air distribution plate, filter cloth, a fluidized bed body and the secondary bed layer. The fluidized bed body is arranged on the air distribution chamber, the air distribution chamber is arranged on the base, a secondary air distribution plate forming the secondary bed layer is arranged in the fluidized bed body, and a lever mechanism for adjusting and controlling the position of the secondary air distribution plate in the fluidized bed body is arranged. The fluidization effect of medium solids and experiment materials, such as coal, on the upper portion of the secondary bed layer of the fluidized bed body is better through air entering the fluidized bed body, and coal granules and the like are layered in the fluidized bed body according to the density based on the Archimedes principle. The bed layer fluidization and sorting characters in the sorting process can be remarkably improved through the secondary bed layer. Pressure is applied to one end of a horizontal lever, and is transferred to the secondary air distribution plate, and discharging can be more convenient by lifting the secondary air distribution plate.