Sand screening device capable of pouring residues at any time

The utility model relates to a sand screening device capable of pouring residues at any time. The sand screening device comprises a replaceable screen, a rubber sheet, a screen shaft, a spring and a screen motor. The feeding hole is fixedly formed in the upper part of the shell; the discharge hole is formed in the lower part of the shell; the hot air blowers are fixedly installed on the upper portion, the left portion and the right portion in the shell respectively, and the hot air motors control the hot air blowers to work. The sand drying device has the advantages that the sand drying speed is increased, power consumption during sand drying is reduced, and the efficiency problem in the sand drying process is solved; the labor intensity of operators is reduced; the screening diameter of the replaceable screen can be selected according to actual requirements in engineering, and sand with the proper particle diameter can be obtained; the device is moderate in size, high in cost performance, convenient to trans