Multi-stage fly ash screening device

The utility model discloses a multistage fly ash screening device, which relates to the technical field of fly ash screening, and comprises a shell, the upper surface of the shell is provided with a feed inlet, the lower surface of the feed inlet is fixedly connected with a conveying box, the feed inlet is internally provided with a rotating rod, one side of the rotating rod is provided with an elastic rod, and the elastic rod is fixedly connected with the conveying box. And a solid ball is arranged on one side of the elastic rod. The conveying box and the screening box are matched with the auger to convey fly ash, the lower half portion of the screening box adopts the screen to screen the fly ash, the motor is arranged on one side of the auger to drive work, and the first gear and the second gear are arranged to be connected through the tooth caterpillar band to drive the rotating rod to rotate. And an elastic rod and a solid ball are arranged on the rotating rod, and the solid ball strikes the screening box