As the names of the fire, the fire fire exhaust valve is used to block the passage of flue gas and flames from fire, and within a certain period of time, it can meet the valve that can meet the requirements of refractory stability and refractory integrity in a certain period of time.When the building occurs, the pipelines of the fire and the air -conditioning system spread rapidly, and there are many cases that cause major losses.In order to reduce the loss caused by the fire to a small level, effective fire prevention and smoke anti -discharge measures must be taken to control the spread of the fire.Important role.However, in many design projects, the phenomenon of the selection of fire -resistant smoke valve is wrong, and the unreasonable settings are common.
The fire -resistant smoke discharge valve is a valve that can meet the requirements of refractory stability and refractory integrity in a certain period of time to meet the fire resistance stability and refractory integrity requirements within a certain period of time.The action temperature is generally 280 ° C.If a fire occurs, it can be automatically opened to smoke automatically. When the temperature of the flue gas reaches or exceeds 280 ° C, the valve is automatically closed to prevent the fire from spreading.The smoke exhaust fan should still be able to work continuously for 30 minutes at 280 ° C.
Fire fire smoke discharge valve is usually composed of the following main parts:
1. Valve body: The valve body is the main component of the fire to smoke exhaust valve, which is usually made of metal material (such as steel plate).It has high fire resistance and can withstand high temperature and flames during the fire.The valve body is usually rectangular or circular, with air inlets and air outlets.
2. Valve tablets: Valve tablets are key components, which are used to control the opening and closing of the airflow.It is usually made of high -temperature resistance, such as stainless steel, which has good corrosion resistance and refractory resistance.The valve sheet can be a single -piece or multi -chip type, which can adjust the opening level of the gas channel by rotating or moving.
3. Transmission device: The transmission device is used to control the movement of the valve sheet, which is usually composed of motor, manual operation device or pneumatic device.Electric transmission devices are the most common types that drive the opening and closing motion of the motor drive valve sheet.Manual operation device can be used for manual operations in emergencies, while pneumatic devices can be used for control under special conditions.
4. Sealing device: It is necessary to have good sealing performance to prevent smoke and heat from leaking through the valve body.The sealing device is usually made of high -temperature -resistant sealing materials, such as refractory adhesive or metal sealing rings.They are installed between the valve body and the valve sheet to ensure that a good sealing effect is achieved in the shutdown state.
5. Control system: Usually connect to the fire alarm system or smoke discharge control system of the building to achieve automatic control.By controlling the signal of the system, you can automatically turn on or close to ensure that smoking is discharged in time when the fire occurs.
6. Fire protection: usually have fire protection functions to ensure that high temperatures and flames can be effectively resisted in fire conditions.They usually have the protection of refractory coating or refractory insulation materials to improve the refractory resistance of the valve body and valve sheet.
The above is the main part of the fire fire smoke exhaust valve. I hope it can be helpful to you. For more relevant information, please pay more attention to us- ——