Hefei Hefei fire damper valve exhaust valve Hefei Hefei Hefei smoke damper positive pressure blower pressure axial fan blower with high efficiency, compact structure, low noise, small size, easy installation, widely used in hotels, restaurants , shopping malls, office buildings, stadiums and other senior civil through the exhaust pipe pressurized air supply and ventilation industrial and mining sites, including two-speed fan can be to adjust the desired amount of wind, air pressure according to the use of the conditions required by the shift, divided into: A performance large flow and low-noise high-pressure type B in two sizes, I jgf is single-speed exhaust fan, type II dual speed; SWF (A) -III high-speed high-pressure type. Exhaust fan impeller is made of steel wheels hydraulic stretch forming exhaust fan Price, hydroforming press the blade exhaust fan blades and hub assembly welding forming. Technology Second, the HTF fire exhaust fan impeller static and dynamic balance correction kitchen exhaust fan exhaust fan installed, the balance accuracy is not greater than G5.6 level. Process Third, and finally we would also like to learn about the production process is HTF fire exhaust fan is spinning from the outer cylinder flange XGF fire temperature exhaust fan -HTF (B) series fire temperature exhaust is with the overall flanging Francis fan smoke multi-objective optimization using CAD software design, matching molded twisted wing Francis impeller, totally enclosed motor built supply temperature exhaust fan, arranged a special motor cooling system. Use two-speed motor direct-drive, to one machine (that usually send exhaust ventilation and fire when using high-temperature exhaust), remote automatic control exhaust fan choice disposed electrical control box after the main control parameters for the operating temperature dtf row Smoke fans, air volume, total pressure htf exhaust fan, efficiency, noise, exhaust fan motor power box, speed and shaft power. 2. The exhaust fan at a temperature not higher than 85 ℃ conditions should be long-term normal operation. 3. The exhaust fan shall ensure that: When the transmission medium at a temperature of 280 ℃ continuous work 30min exhaust fan, and the medium temperature cooled to ambient temperature still continuous running. HTF Fire fan performance properties listed in the table is the most efficient performance within range, according to the air volume is divided into five performance points, according to prevail in the selection of the performance table. Fire fans quality products manufactured in the rated flow, total pressure error does not exceed ± 5%, the performance of the selection list is performance under standard conditions, technical documents wherever fire exhaust fan, exhaust fan good (certified), Henan, Shandong GREAT exhaust fan by fan air-conditioning Limited. Shandong GREAT Fan Air Conditioning Equipment Co. (www.greatfengji.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. GREAT leadership in the staff warmly welcome all inquiries negotiations to create a better future GREAT.