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Fire damper installed in accordance with the procedures in the exhaust system application

Release Time：2021-07-21

Fire dampers and smoke exhaust valves are produced by manufacturers with provincial manufacturing qualifications approved by the public security fire department, and the construction unit is only responsible for installation on site.
(1) fire valve is the general name of fire valve, fire valve, smoke fire valve, fire vent, the difference between fire valve and fire control valve is that the blade opening of the latter can adjust the air volume in the range of 0-90 °.
(2) The structure of the fire damper is mainly composed of valve shell, valve plate, rotating shaft, self-locking mechanism, inspection door, fusible sheet, etc. The valve plate blade of the fire damper valve is suspended into a horizontal or downward state of 5 degrees by fusible sheet. The fire damper is normally open in the air duct at ordinary times. When the fire occurs and the air temperature flowing through the fire damper is higher than 70 ℃, the fusible sheet melts, the valve plate or blade falls by gravity, driving the self-locking reed action, so that the valve is closed and the well is self-locking, which can prevent the flame from spreading along the air duct, thus playing a role in fire prevention.
When the valve needs to be re-opened, loosen the bolt in front of the white lock reed, use the operating rod to shake the valve plate or blade, connect the fusible sheet, search the self-locking reed, tighten the bolt, and the fire damper will return to normal working condition.

The application of fire valve in exhaust system.
A good fire damper adjustment system design must have a reasonable exhaust system, which is often not paid attention to. In civil buildings, especially in high-rise buildings, the enclosure structure has good air tightness, and only less air volume is needed to maintain the positive pressure value of the room. About 85 ~ 90% of the fresh air volume must be discharged outdoors through organized air exhaust, so as to ensure the balance of air supply and exhaust air volume, otherwise, no amount of fresh air can be sent into the room. In civil buildings, the exhaust air is generally discharged outdoors through the auxiliary rooms of fire dampers such as toilets and boiling water rooms. In addition, a set of exhaust system should be added sometimes to ensure the delivery and exhaust balance.
For toilet exhaust, the usual practice is to set up one or two toilet ventilators in each toilet, which are interlocked with the exhaust fans on the exhaust shaft. We know that the fresh air system in high-rise buildings should operate all the year round, and the corresponding exhaust system should also operate all the year round. In other words, people who use the toilet with fire dampers cannot control the opening of the toilet ventilators, so there is no need to set up toilet ventilators.
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.