Smoke vent is installed on the roof of steel structure factory building. When the air in the steel structure factory building is discharged by natural pressure, it prevents the airflow outside the steel structure factory building from affecting the indoor ventilation effect and causing environmental pollution of the steel structure factory.

The ventilation principle of smoke vent: the steel structure factory building relies on natural pressure (heat pressure, wind pressure) to use roof vents to form natural ventilation and heat dissipation.

The lighting principle of natural roof ventilation: steel structure factory plants or ridge ventilator use FRP lighting panels for lighting, also known as glass fiber reinforced plastic lighting panels or glass fiber reinforced polyester lighting panels to obtain natural light and realize natural lighting functions.

Windproof principle: The protective function of steel structure workshop to prevent rain, snow, sand and other pollutants from leaking from the external airflow. There are two windproof methods: fixed windproof: the ventilation skylights overlap each other to prevent external airflow and fixed Structural relationship. Adjustable windproof: The natural ventilator adopts the opening and closing size of the control exhaust vent to prevent the external airflow from entering the factory building.

Ventilation and daylighting skylight structure: ventilation and daylighting skylight (natural ventilator) is composed of skylight frame, outer guard plate, rain shield, drainage groove, flooding plate, opening and closing valve plate and other parts. It is used in light steel color steel plate. Natural ventilation skylights on the expanded steel roof. Ventilation skylight is an evolved natural roof ventilator, and it is a roof natural ventilation skylight that continuously improves its function and integrity.