Automatic lifting dry-wet screening device and method for polymeric proppants

The invention belongs to the technical field of oil extraction engineering, and discloses an automatic lifting dry-wet screening device for polymeric proppants. The device comprises a shell, a supporting frame, vibrating screens, water spraying belts, a lifting assembly, a water supply assembly, a drying assembly and a control system, wherein the supporting frame is arranged in the shell through an elastic assembly, a vibrator is arranged on the supporting frame, a spraying head is arranged at the top of the supporting frame, a plurality of sets of vibrating screens are arranged in the supporting frame in a stacked mode, the screen mesh hole diameters of the plurality of sets of vibrating screens are sequentially decreased from top to bottom, a water spraying belt is arranged between everytwo adjacent vibrating screens, the water supply assembly is used for supplying water to the spraying head and the water spraying belts, and the drying assembly is used for drying the screened proppants. The invention furthe