Stirring device for mortar for constructional engineering

The utility model discloses a mortar stirring device for constructional engineering, which comprises a bottom plate and a box body, the inner wall of the bottom of the box body is fixedly connected with a fixed shaft, the top of the fixed shaft is rotationally connected with a rotating shaft rotationally connected with the top of the box body, and the outer wall of one end, close to the fixed shaft, of the rotating shaft is fixedly connected with a connecting rod. An output shaft of the motor rotates to drive a rotating shaft to rotate, the rotating shaft rotates to drive a disc to rotate so as to drive an arc-shaped rack to rotate, the arc-shaped rack rotates to enable a strip-shaped rack to move, then the two sets of movable boxes move in the opposite directions, springs deform, and when the arc-shaped rack does not make contact with the strip-shaped rack, the springs reset so that the movable boxes can reset. And the movable box moves to screen raw materials in the movable box, and the raw materials enter