Screen for screening sand in building construction

The utility model discloses a screen for screening sand in building construction, which belongs to the technical field of screens and comprises a fixing frame, fixing plates are arranged on the lower portions of the left inner wall and the right inner wall of the fixing frame, springs are arranged on the tops of the fixing plates, positioning blocks are arranged on the tops of the springs, a fixing frame is arranged on the tops of the positioning blocks, and a screen is arranged in the middle of the fixing frame. A first baffle is arranged at the left end of the top of the fixing frame, a feeding port is formed in the top of the fixing frame, a discharging port is formed in the lower portion of the right side of the fixing frame, sand falls on the screen at a certain height, impact force is formed on the screen, the screen is impacted to move downwards, and the screen moving downwards moves upwards under the action of a spring. And the screen mesh rebounds under the action of the spring, so that the screen me