Sand screening device for constructional engineering

The utility model discloses a sand screening device for constructional engineering, which comprises a box body, supporting legs, an operation panel, a first sand outlet, a heat dissipation window, a second sand outlet, a third sand outlet and a vibration type sand screening device, the box body is of a four-edge rectangular structure, and the bottom end of the box body is provided with four groups of supporting legs fixed by bolts; an embedded operation panel of a rectangular structure is installed in the middle of the front end of the box body, a first sand outlet of a rectangular structure is formed in the top of the right end of the operation panel, symmetrically-distributed heat dissipation windows are formed in the bottom end of the first sand outlet, and a second sand outlet is formed in the front end of the middle of the right side of the box body. A third sand outlet is formed in the bottom of the rear end of the second sand outlet and is of a rectangular structure, and a vibration type sand screening