百叶窗式拢风筒排风机（摆转重锤打开机构）-山东裕韵三和机械有限公司

DJF（c) series Shutter Cone Fan ( Swung Drop Hammer Opening System )

Keywords

	Reasonable cone design, improving exhaust power. Large air volume, Adopt aluminum alloy shutters, light weight and attractive.
	Added with Swung Drop Hammer opening system,flexible opening,reasonable open angle,lower wind resistence,higher ventilation efficiency, save much more energy than the similar fan.
	Fan blade is made of Krupp stainless steel by punch forming. no dust, attractive and durable. Special blades shape design ensure large air volume, no deformation, no broken, keeping big air volume all the time. Thickness 1.2mm, surface finish BA grade.
	Fan belt pulley is made of high strength aluminum-magnesium alloy by die-casting which reduces the weight of propeller, high corrosion resistance. Special three reinforced ribs pulley design. Sand blasting treatment for attractive appearance, eliminate internal stress to improve its own rigidity and stability, never broken.
	Fan bearing adopts imported double-row bearing with special waterproof design. High strength, low noise, free maintenance and long service life.
	Fan blades are adjusted by intelligent dynamic-balance tester, ensure smooth running, low noise,strong stability and long service life.
	Adopt hot-dip galvanized blades support and safe net since 2011, improve standard parts quality to ensure no rust.
	Complete new CNC production line improved fan quality up to top grade, aesthetic appearance.

PrveDJF series Centrifugal Push-Pull Exhaust Fan ( Double Rotational Hammer) NextDJF(c)-750 Gutter Fan (Ammonia Extractor Fan)