What are the types and characteristics of fire dampers and smoke exhaust valves?

Fire valve facilities are divided into two categories: fire damper and smoke exhaust valve!

Fire protection: self-hanging flap fire damper, fire damper, fire control valve, smoke fire control valve, small fire control valve, ......

Features: 70°C automatic shut-off, manual can automatically reset the output to turn off the telecommunication signal.

Smoke exhaust: smoke exhaust valve, smoke exhaust fire damper, remote control smoke exhaust valve, remote control smoke exhaust fire damper, plate smoke exhaust port, multi-leaf smoke exhaust outlet, remote control multi-leaf smoke exhaust outlet, remote control multi-leaf fire and smoke exhaust outlet, multi-leaf fire and smoke outlet, ......

Features: The telecommunication signal DC24V is turned on, which can be manually and automatically turned on remotely, and the output can be reset to open the telecommunication signal.

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Smoke exhaust valve andSmoke and fire dampersThe differences are as follows:

1. The installation position is different. The smoke exhaust valve is installed at the end of each branch pipe (smoke inlet) of the mechanical smoke exhaust system, which is usually closed and meets the requirements of air leakage. The smoke exhaust fire damper is generally installed on the pipeline of the mechanical smoke exhaust system, which is usually closed, and the smoke exhaust is opened when the fire occurs, and the smoke exhaust is closed when the smoke temperature in the smoke exhaust pipe reaches 280 degrees, and the smoke exhaust fan is closed at the same time.

2. The fire resistance is different. The fire resistance of the smoke exhaust valve is relatively low, while the smoke exhaust fire damper meets the requirements of smoke leakage and fire resistance integrity within a certain period of time, and plays the role of smoke insulation and fire resistance.

3. The structure is different. The smoke exhaust valve is generally composed of valve body, blades, actuator and other components. Valves with or with decorative openings are called smoke vents. The smoke exhaust fire damper is generally composed of valve body, blades, actuator and temperature sensor.

Distinguish between fire dampers andSmoke and fire dampersThere are the following:

First, the temperature of these two valves is different. The temperature of the fire damper is 70 degrees, and when the temperature reaches a certain limit, the fire damper will automatically close. The temperature of the smoke exhaust fire damper is 280 degrees, and it can be manually closed after reaching the noise limit.

Second, the two have different daily statuses. The fire damper is open on a daily basis, while the smoke exhaust fire damper is closed on a daily basis.

Third, the smoke exhaust fire damper is generally installed at the air inlet, and it cannot be installed at the air outlet, and the function of this valve is to break and separate.

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Dear, I have received your problem, the solutions to the related problems are as follows, I hope to help you The difference between electric smoke exhaust fire damper and manual smoke exhaust fire damper is as follows: electric smoke exhaust fire damper is mainly used in mechanical smoke exhaust system, it is a 280 degree Celsius fire damper, usually normally closed, and it is actively opened by the fire active alarm linkage signal when the fire breaks out, and it has a manual actuator, which can be manually opened, and can also be opened remotely in the fire control center (that is, linkage control, manual control, active control three methods), It is usually installed at the smoke exhaust outlet, the air duct through the fire prevention, the smoke partition and the air duct through the wall of the smoke exhaust machine room, and is closed when the flue gas temperature in the air duct reaches 280 degrees. The electric smoke and fire damper is normally closed, and the smoke in the house will only be opened when it reaches a certain concentration, and then it will be actively closed at 280 degrees Celsius. Ordinary smoke-proof fire damper is mainly used in ventilation and air-conditioning system, smoke-proof fire damper is usually installed in the fireproof separation of ventilation system and air-conditioning system machine room, is 70 degrees Celsius fire damper, usually open, when the flue gas temperature in the air duct reaches 70 degrees is actively closed.

The control method is active. The smoke and fire damper is normally open on the pipeline, which is open for ventilation for a long time, and is installed in the center of the air duct at 70 degrees Celsius, which can block the air duct when there is a fire, which has two effects: one is not to transport air to the fire scene to prevent combustion; The second is to prevent the fire source from spreading from the air duct to other places.

When it is on fire, it is actively closed.

For safety reasons, Zaoqing houses are generally equipped with stool hall fire dampers, so what are the differences between it and smoke exhaust fire dampers? Let's take a look.

1. The structure is different.

The fire damper is mainly composed of a valve body and an actuator. The valve body is composed of shell, flange, blade and blade linkage mechanism. The actuator is composed of a shell, a blade adjustment mechanism, a clutch, a temperature fuse, etc.

When the smoke temperature in the smoke exhaust pipe reaches 280 degrees, the stool is closed when the temperature reaches 280 degrees, and the smoke leakage and fire resistance integrity requirements are met within a certain period of time, and the smoke insulation and fire resistance integrity requirements are met, and the smoke insulation and fire resistance are played. Main material: carbon steel, galvanized sheet, stainless steel.

2. Working principle.

The actuator type of the fire damper controls the rotation of the blades through a metal fusible plate and a clutch mechanism.

The smoke and fire damper is usually open, and it is also open in the event of a fire, but when the flue gas temperature reaches 280, the smoke and fire damper will be automatically closed, and the fan that has been opened will stop running.

Smoke exhaust fire damper, fire fighting parts, generally installed on the pipeline of the mechanical smoke exhaust system, usually open, open the smoke exhaust when a fire occurs, close when the smoke temperature in the smoke exhaust pipe reaches 280 degrees, and meet the requirements of smoke leakage and fire resistance integrity within a certain period of time, and play the role of smoke isolation and fire resistance. The smoke exhaust valve is installed at the end of the branch pipe of the mechanical smoke exhaust system, which is usually closed, and meets the air leakage volume, fire or need to open the smoke exhaust valve manually or electrically.