Sand screening and dust falling device for civil engineering

The utility model discloses a civil engineering sand screening and dust falling device and belongs to the technical field of civil engineering. An intermittent mechanism is arranged in the discharging bin, the upper end of the discharging bin is fixedly communicated with the lower end of the feeding hopper, the lower end of the discharging bin is fixedly communicated with the upper end of the sand screening bin, a sand screening mechanism is arranged in the sand screening bin, a sand outlet is formed in the side wall of the sand screening bin, the upper end of the feeding hopper is fixedly connected with one end of a dust collection mechanism, and the other end of the dust collection mechanism is communicated with the sand screening bin. Flying dust generated by sand pouring is reduced through the intermittent mechanism, then the flying dust is sucked into the sand screening bin through the dust suction mechanism, the better dust falling effect is achieved, finally the sand screening operation is completed th