Fire fire exhaust valve is an important fire protection equipment. It is installed in the air duct of ventilation and air -conditioning system, which has the effect of fire blocking and smoking.The structure and working principle are as follows:
1. Structure: The fire -resistant smoke valve is mainly composed of valve body, blades, execution agencies, and temperature sensors.The valve body is usually welded with steel plates and has good fire resistance.The leaves are generally fixed on the execution agency and can rotate around the central axis.The execution agency adopts an electric or pneumatic method to connect with the leaf through the rod to achieve the opening and closing of the blades.The temperature sensor is used to detect the temperature of the flue gas. When the temperature reaches the set value, the temperature sensor will send a signal, perform the movement of the mechanism, and the blade is closed.
2. Working principle: When the fire occurs, the temperature of the flue gas gradually increases, and when the temperature sensor detects the temperature to the set value, a signal will be sent to the execution mechanism, the execution mechanism moves, and the leaves will be closed.After the leaves are closed, the smoke discharge system stops working, and the smoke cannot be discharged to prevent the fire from spreading.At the same time, the valve body has good thermal insulation performance, which can prevent external high temperature from being introduced into the air duct and protect the internal equipment from high temperature.
In addition, the fire smoke discharge valve can also configure a manual control device as needed, which can manually open or turn off the smoke exhaust valve in emergency situations.At the same time, the fire -resistant smoke exhaust valve also has a reset function. When the temperature decreases to a certain value, the temperature sensor will automatically reset, perform the movement of the mechanism, and the blades are reopened.
In short, the fire -resistant smoke valve is an important fire equipment, and its structure and working principle are relatively simple.Through reasonable configuration and use of fire fire smoke exhaust valves, the fire of fire can be effectively prevented and the safety of peoples life and property can be protected.