Rotary screen device for gypsum powder production line

The invention discloses a rotary screen device for a gypsum powder production line, and belongs to the field of gypsum powder production line devices. The problem that gypsum powder with different particles is screened through a simple screening device issolved; the rotary screen device structurally comprises a frame body, a cover body, a rotating shaft, a barrel-shaped screen body and a driving device, wherein the cover body forms a screening cavity and a discharging cavity which communicate up and down, a feeding opening is formed in the upper end part of the cover body, and the feeding opening communicates with a feeding port of the screen body through a feeding pipeline; a fine material outlet and a coarse material outlet are formed in the lower end part of the cover body, screening holes, the screening cavity, the discharging cavity and the fine material outlet sequentially communicate to form a fine material channel, and the coarse material outlet communicates with a discharge port of the screen body th