Smoke exhaust fire valve is a fire fighting facility used in the interior of a building, its main role is to eliminate smoke in the event of a fire, prevent smoke from causing harm to personnel and buildings, and prevent smoke from spreading along the ventilation pipe, thereby reducing the impact of smoke on the entire building.

Smoke is one of the most deadly factors in fire, its thick smoke and toxic gas can cause suffocation and poisoning, but also affect the rescue work of firefighters. Therefore, in the design and construction of buildings, corresponding measures must be taken to control and eliminate the smoke generated by the fire. Smoke exhaust fire valve is one of the important equipment, which has the following main roles:

1. Prevent the spread of smoke: When there is a fire inside the building, the smoke exhaust fire valve can be closed and cut off the ventilation pipe in time to prevent the smoke from spreading along the ventilation system to other areas, thereby slowing the spread of the fire and improving the evacuation and escape time.

2. Smoke evacuation: The smoke exhaust fire valve can be opened quickly in the event of a fire, and a large amount of smoke and harmful gases can be discharged from the outside of the building, reducing the indoor smoke concentration and protecting the life safety of personnel.

3. Maintain pressure balance: After the smoke is removed, there will be negative pressure inside the building. The smoke exhaust fire valve can maintain the pressure balance of the ventilation pipe, ensure the normal flow of air inside and outside the building, and avoid damage to the building structure or other safety hazards.

4. Reduce economic losses: fire damage to buildings and equipment is often huge, and smoke is also one of the damage caused by fire. The function of the smoke fire valve is to reduce the impact of smoke on the building as much as possible, reduce the cost of repair and reconstruction, and protect the property safety of enterprises and individuals.

In short, the smoke exhaust fire valve is an important equipment to ensure the internal safety of the building, and its role is not only to control and eliminate smoke, but also to reduce the harm of fire to buildings and personnel. In the architectural design and planning of fire fighting facilities, the setting and operation mechanism of smoke exhaust fire valve must be fully considered to ensure that the life and property safety of personnel can be effectively protected when the fire occurs.