Efficient sand screening device for building

The utility model relates to the technical field of sand screening devices, in particular to an efficient building sand screening device which comprises a feeding mechanism, a sand conveying belt arranged at the bottom of the feeding mechanism and a sand screening mechanism installed at the outlet end of the sand conveying belt. Sand materials are ground between the fixed stirring teeth and the rotary stirring teeth, so that the caked sand materials can be fully ground, the sand materials are fine and smooth in texture, and the screening quality is improved; the transmission shaft drives the screen drum to rotate, sand materials rotate at a high speed in the screen drum, under the action of centrifugal force, fine sand is filtered out through the screen, coarse sand is left in the screen drum, and fine screening of the sand materials is facilitated. The rotary plate is rotated to the parallel position of the fixed plate through the bearing, the limiting rod penetrates through the through hole and is inserted