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The key points of selecting fire damper are used reasonably in design engineering.

Release Time：2021-07-21

The main points of selecting fire valve.
1. Fire valve selection of the main control parameters for the specifications.
2. Fire dampers are suitable for ventilation and air conditioning systems. In addition to fire dampers for kitchen fume exhaust systems in public buildings, the operating temperature is 150 ℃, and the operating temperature of fire dampers for general ventilation and air conditioning systems is 70 ℃.
3. Fire dampers are suitable for ventilation, air conditioning or exhaust system pipes.
4. When selecting a valve, you should pay attention to the function of the valve, such as normally open or normally closed, automatically closed to open, manually closed to open, manually reset, fire damper number output, remote control and other requirements.
5. If the valve and fan linkage should be selected with double micro switch device.
6. The valve body blade shall be steel plate with a thickness of 2~6mm. The valve body shall be made of non-combustible materials. The rotating parts shall be made of corrosion-resistant metal materials and shall be flexible in rotation. The thickness of the valve shell shall not be less than 2mm. The easy melting parts shall meet the approval standards of the fire department.
The structure and working principle of the fire damper The structure of the fire damper is mainly composed of a valve body and an actuator. The valve body is composed of a shell, a flange, a fire damper blade and a blade linkage mechanism. The actuator is composed of a shell, a blade adjustment mechanism, a clutch, and a temperature Fuse, etc., the actuator of the fire damper controls the rotation of the blade through a metal fusible plate and a clutch mechanism.
When the temperature of the gas transported in the pipeline reaches the melting temperature of the fusible metal sheet, the fusible metal sheet melts, and the compression spring and the spring pin on the mandrel quickly lay the clutch pad. At this time, the clutch and the blade adjustment mechanism are disconnected. As the valve body is equipped with two torsion springs, the blade rotates under the force of the torsion fire damper. Thus, the actuator of the fire damper adopts the mechanical transmission principle and does not need electricity, gas and other energy, this can ensure that in any case can play a role in fire.
According to the requirements of the system, the on-off of the fire damper is in the open state when the system is deactivated and in normal operation. For example, when the temperature of the conveying gas in the pipe is lower than the melting point of the selected metal fusible sheet, the valve is in the normal operation state and the valve is open. Only when the operating condition exceeds the normal use state, the valve will automatically close to achieve the function of security.
Shandong Xingheng Environmental Technology Group Co., Ltd. is located in Luquantun Development Zone, Dezhou, Shandong, the hometown of FRP in China. The company has Grade II qualification for fire protection facilities engineering, Grade II qualification for construction mechanical and electrical installation engineering, Grade II qualification for environmental protection engineering, and safety production license. It is the first in the industry to pass ISO9001 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health management system certification, and an axial fan invention patent, A fan utility model patent, environmental assessment, safety assessment, three simultaneous and other procedures are complete.