Sand screening device for construction site

The invention relates to a sand screening device for a construction site, which belongs to the field of construction appliances and comprises a sand screening box body provided with a feed port, sand baffles used for preventing sand from splashing are symmetrically arranged on two sides of the feed port, an anti-sticking shaking assembly is arranged behind the two sand baffles, and two sand screening plates used for screening sand are arranged on the inner side of the sand screening box body up and down at intervals. And one side of each sand screening plate is connected with a sand screening assembly used for screening sand, a conveying assembly is arranged below the sand screening plates, and the conveying assembly extends out of a discharging opening formed in the side wall of the sand screening box body. Sand attached to or remaining on the sand blocking plate and the screening plate is cleaned through the shaking assembly and the poke rod, the working efficiency is effectively improved, screening is conv