国产中文字幕在线观看亚洲_欧美少妇午夜福利_欧洲熟妇色xxⅩx欧美老妇多毛_交videos乱叫娇小_91香蕉成人app网站_在线观看av网站永久_四虎成人4hutv影院_免费大片在线观看网站_国产午夜激无码αV毛片护士_最新国自产拍小视频

Axial flow fan how to work?This, believe that professional practitioners will be familiar with.Note below, I don't know friends, we can understand and have a look together.
Axial flow fan is the change of the use of the moving blade installation Angle, make the fan performance curve shift.Performance curves with different moving blade installation Angle and duct performance curve, can draw a series of working point.If need to increase flow rate and pressure head, need to increase the moving blade installation Angle;Whereas only reduce moving blade installation Angle.Axial flow fan of moving blade adjustment, the adjustment of high efficiency, and can make an adjusted fan work in high efficiency zone.The moving blade adjustable axial flow fan can also avoid in small flow condition whereabouts in unstable conditions.Axis wind flow motor leaf adjusting fan complex structure, adjusting device demand is higher, manufacturing accuracy requirement is high.Change the moving blade installation Angle is performed by moving blade adjustment mechanism, which includes hydraulic control device and a transmission mechanism.Hydraulic piston within the cylinder by the shaft sleeve and the piston shaft shouldered by axial positioning, can move around on the piston of hydraulic cylinder, but does not produce axial piston movement.In order to prevent the hydraulic cylinder on the left and right while moving through the piston and hydraulic cylinder clearance leakage, the piston also device has two columns on the grooved seal.When the impeller rotates, the hydraulic cylinder synchronization with the impeller rotation, the piston due to the shield and the rotation of the piston shaft also rotary motion.
So fan stable work under a certain condition, the relative movement between piston and hydraulic cylinder no.On the other side of the piston shaft is equipped with control shaft, impeller rotates control shaft motionless, but when the hydraulic cylinder around mobile drive control shaft move together.Control the first parts is still not make the rotary motion.Blade mounted on the outer end of the petiole, each blade with six bolted on petiole, petioles from petioles bearing support, balance weight and leaf installed into a specified Angle, the two different displacement, balance weight is used to balance the centrifugal force, make blade in operation is adjustable.Moving blade regulating mechanism is surrounded by a impeller and shield, such work safety, avoid dirt into the regulating mechanism, flexible motion or BuKa acerbity.