Sand screening device for building construction

The invention relates to the technical field of building construction, in particular to a building construction sand screening device which comprises supporting legs, first containing grooves are formed in the upper ends of the two supporting legs correspondingly, communicating grooves are formed in the opposite ends of the two supporting legs correspondingly, and the two communicating grooves communicate with the two first containing grooves correspondingly; universal wheels are symmetrically and fixedly installed at the lower ends of the two supporting legs, wheel stoppers are arranged in the two universal wheels, first vertical blocks are symmetrically and fixedly installed at the upper end of the supporting leg located on the left side, arc-shaped grooves are formed in the two first vertical blocks, and second vertical blocks are symmetrically and fixedly installed at the upper end of the supporting leg located on the right side. Fixing columns are rotationally installed between the two first vertical blo