In our days is now inseparable from the 70 degree fire damper, so we should learn to check and adjust it in our daily days.
The 70-degree fire damper is a kind of equipment to avoid the spread of fire. The 70-degree fire damper is usually in a normally open state. In general buildings, it is usually installed at the entrance of the fan used for both the smoke exhaust system and the ventilation and air conditioning system. When the temperature of the airflow in the pipeline rises to the fuse, the core rod is pushed by the spring, and the fork plate is disconnected. The valve shaft is rolled by the torsion spring effect to close the valve, if the air volume needs to be adjusted to be very small, the valve opening can be adjusted through the handle linked with the valve shaft, and the butterfly mother can fix its position when the requirement is reached, and a closed electrical signal output device can be added according to the user's requirements to become a 70-degree fire damper.

What are the requirements for relevant fire dampers and smoke exhaust fire dampers.
1. In one of the following situations, the air duct of the air conditioning system of the fire damper shall be equipped with fire damper:(1) the partition wall where the pipeline crosses the fire compartment,(2) the pipeline crosses the partition wall and floor slab of the ventilation, air conditioning machine room and important or high fire risk room,(3) the horizontal pipe section at the junction of the vertical air duct and each layer of horizontal air duct (4) the pipeline crosses both ends of the deformation joint.
The above parts of the fire valve, when the temperature of the gas in the pipeline in the fire reaches 70OC, the active closure.
2. Separation of smoke exhaust system:(1) In the population of the smoke exhaust room, a smoke exhaust fire damper that can be actively closed when the smoke temperature crosses 280OC shall be set. The smoke exhaust machine shall ensure that it can operate continuously for 30MIN at 280OC; (2) A smoke exhaust fire damper that can be self-closed when the smoke temperature crosses 280C shall be set on the smoke exhaust branch pipe.
(II), the significance of this study is to open fire dampers. As an important part of building fire prevention and smoke prevention and exhaust system, the quality of smoke exhaust fire dampers is directly related to the success or failure of the above-mentioned system settings, the safety of fire dampers for building fire prevention and the loose safety of personnel. No matter about suppliers, users or fire supervision parts, they all pay great attention to their quality.
The vibration measuring instrument will give an alarm when the vibration of the smoke exhaust fire damper is close to the dangerous value. It is usually installed on the air pipe or smoke outlet of the smoke exhaust system and is normally closed. In case of fire, the smoke sensing probe announces the fire signal and is under control.
The heart energizes the electromagnet on the long-distance controller on the valve to open the valve, and then plays the function of blocking fire and smoke exhaust. It can be seen that the smoke exhaust fire damper and its importance must be purchased from a regular manufacturer.

Fire valve alarm circuit in the installation of pay attention to what.
The main purpose of the fire damper is to install it on the ventilation and air conditioning system. The return air pipe is usually open. When the smoke temperature in the pipe reaches 70 degrees, it is closed, and the smoke leakage and fire resistance integrity requirements can be satisfied within a certain time, so as to have the effect of smoke isolation and fire resistance. The main precautions for daily fire control valve transportation are:
When we use the fire valve, this type of fire control valve will use the detector to announce the sound and light, print the alarm content, convert the ground fire signal sent by the detector in the area into the sound and light alarm signal, and output the signal to the alarm controller together.
After one circuit gives an alarm, press the silencer button to silencer the sound. If the controller bears the alarm signals of other circuits at this time, it can still give an audible and visual alarm, because the active fire alarm system actively monitors fires and various faults, and the system is usually under supervision. When there is no fire or fault, the operator cannot know whether these active monitoring functions are intact, the ground effect of the fire alarm controller is to connect several regional alarm controllers to form a system, accept the fire signal and fault signal sent by each regional alarm controller, indicate the fire area or the location of the fault area in time, and announce the sound and light alarm signal.
Shandong Xingheng Environmental Technology Group Co., Ltd. is located in Luquantun Development Zone, Dezhou, Shandong Province, the hometown of glass fiber reinforced plastic in China. The company has three-level qualification for construction mechanical and electrical installation engineering, three-level 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, an axial fan invention patent, a fan utility model patent, EIA, three at the same time waiting for complete procedures