When the inner core tube is installed, it is fully unfolded by pushing screw. The outer wall of the core tube is tightly connected with the inner wall of the trachea. The opening at the end of the core tube is closed by a liner, forming a second sealing surface.
The rubber sealing ring and the air pipe wall are compressed to form a third sealing surface, thereby reliably meeting the sealing requirements of the core pipe connection.
Inner core tube for air duct connection operation
Before installation, the tension force of the "0" rubber sealing ring is embedded in the core tube of the "v" groove. The opening of both ends of the core tube is in shiplap state, and the diameter of the core tube is narrow. It can be easily maintained to the nozzle, and when installed, the diameter of the screw core expands. When the two ends of the core tube are aligned, the internal expansion business is completed, and the core wall air duct wall is tightly connected. Then the core tube and the tube are fixed by tapping screw or rivet.
Fresh Air Pretreatment Fan for Working Area - Provide pre-treated fresh air for kitchen working area (staff position). Jinan smoke machine installation personnel provide about 20% of the smoke exhaust air, smoke exhaust fan to the cooking area to provide smoke engine oil and gas.
The smoke hood of kitchen exhaust fan takes into account the high working temperature of kitchen besides the fire exhaust fan tube. Other fan pipelines are recommended to install fire valves at 150 C (slightly different from normal fan pipeline equipment at 70 C). When the fire exhaust fan works, all other fans must be shut down (fire supply air enters from windows, door cracks, etc.). When opening the "smoke exhaust fan", the "supplementary fan of the ventilator" and the "fresh air pre-treatment fan of the working area" (linkage) should be opened at the same time.
A smoke exhaust valve is arranged at the end of the smoke exhaust pipe of the kitchen smoke hood, and a smoke exhaust fire valve is arranged at the connection between the smoke exhaust hood of the exhaust fan and the smoke exhaust pipe. It should be noted that the exhaust valve and the exhaust valve are completely different equipment functions. The exhaust valve is usually closed. In case of fire, it will be connected with the alarm host. The opening condition is that the automatic alarm system will have a fire (detector alarm), and the main fire alarm machine will be in an automatic state. The smoke exhaust fire valve is usually open, and the fire is also open. But when the smoke exhaust temperature reaches 280 C, the smoke exhaust fire valve closes automatically, and the linkage fan has been opened and stopped running.