Fire and smoke exhaust actuatorIt is a key equipment for achieving smoke prevention and control automation in the fire protection system, mainly used to control the opening and closing of valves such as fire dampers and smoke exhaust valves to block the spread of fire or quickly discharge smoke, ensuring the safety of personnel evacuation. Its core function lies in intelligent response and precise control. The actuator is equipped with a built-in temperature sensor or receives a fire alarm signal. When the temperature inside the pipeline rises to 70 ℃ (fire damper) or a fire occurs, the valve can be quickly driven to close, preventing flames and high-temperature smoke from spreading through the ventilation duct; In the smoke exhaust scenario, the smoke exhaust valve can be remotely opened, and the smoke exhaust fan can be linked to discharge toxic smoke outside the building. For example, some electric actuators are driven by DC motors and can complete the valve fully open or fully closed action within 5 seconds, with extremely fast response speed.
Fire and smoke exhaust actuators have high reliability and durability. The shell is mostly made of fire-resistant and flame-retardant materials, which can work continuously for more than 30 minutes in high temperature environments (such as 280 ℃) without failure; The internal mechanical structure has been strengthened and designed to withstand frequent opening and closing operations, with a lifespan of tens of thousands of times. At the same time, some products support manual/automatic dual-mode switching, ensuring that valves can still be manually operated in the event of power outages or system failures.
Fire and smoke exhaust actuatorPreparation before operation:
1. Check the equipment status
Confirm that the actuator is connected to the linkage equipment such as the smoke exhaust fan and air valve normally, without looseness or damage.
Check if the power supply, control signal (such as 24V DC), and feedback circuit are unobstructed.
Manually test the mechanical flexibility of the air valve or fan (such as manually opening and closing the air valve to the fully open/fully closed position).
2. Confirm control mode
Choose the control method according to the requirements:
Manual mode: Operated through local control buttons or joysticks on the actuator.
Automatic mode: triggered by the fire linkage controller (such as FAS system).
Remote mode: Send instructions through the upper computer software or monitoring platform.
3. Safety Warning
Ensure that there are no debris obstructing the smoke exhaust system and that the air valve blades can be freely opened.
When operating in a fire situation, it is necessary to wear protective equipment and follow fire safety regulations.