Vertical conical screen for separating beans, soil and grass

The invention discloses a vertical conical screen for separating beans, soil and grass. the vertical conical screen comprises an upper rack, a lower rack and a conical screen body arranged between theupper rack and the lower rack, a conveying belt is arranged on one side of the conical screen body, an output end of the conveying belt is matched with a top inlet of the conical screen body, a firstmotor and a centrifugal fan driven by the first motor are arranged on the upper rack, a fan cover plate is arranged below the centrifugal fan, the conical screen body is sleeved with a sealing cover,the top of the sealing cover is covered with the fan cover plate, a center shaft and a screening disc are arranged in the conical screen body, the screening disc is fixed to the top end of the centershaft, a driving mechanism for driving the conical screen body to rotate is arranged on the lower rack, the driving mechanism comprises a second motor, a slewing bearing and a gear, a discharging hopper is arranged below the sl