Energy-saving ventilation device for architectural design

The utility model discloses an energy-saving ventilation device for building design, which comprises a wall body, a ventilation opening is arranged on the side wall of the wall body, a fan is arranged in a mounting frame, the fan is connected with the mounting frame through a support, rotating shafts are fixedly connected on the left side wall and the right side wall of the mounting frame, and a motor is arranged on one side of the mounting frame. A rectangular hole penetrating through the wall is formed in the inner wall of the ventilation opening, an air inlet pipe is fixedly connected to the inner wall of the rectangular hole, a through hole penetrates through the upper top wall of the ventilation opening, an air guide pipe is fixedly connected to the inner wall of the through hole, and one end of the air inlet pipe penetrates through the rectangular hole and extends into the ventilation opening; and a sealable mechanism connected with the air guide pipe is arranged on the side wall of the extending end of