Supplying air purifier blowers, blower models and more species-wide price products ..

Edit: Standard Electrical Co., Ltd. Shenzhen wind turbine experts more price and specifications, please visit our Ali official website: http: //fbemf2014.1688.com/ air purifier fan factory direct supply, blower models and more species-wide price brand loud ! The following article is from the fan art website for reference purposes only; centrifugal fan bearing leakage causes and treatment I plant a blower is a centrifugal blower fan model for the G4-77№24.5D. 4 years wind turbine impeller side bearing seal leakage has been serious, not only causing serious waste lubricating oil has contaminated equipment and ground; blower bearings often run in a low oil level, threaten the safe operation of the blower; ongoing operation personnel up the oil, adding to the workload of operating personnel. In order to solve the oil spill problem, the technician came up with a variety of ways, but did not get the desired results. Number of improvements, the test found that the oil spill caused by the main reasons: First, the blower runs between the impeller and the impeller side bearing a positive pressure area, the wind will be blown into the room bearing lubricating oil from the casing and the outer sleeve gap out; the second is the hub of the impeller blower side bearing between the impeller design flaw, long run there will be loosening, the sleeve and the shaft gap caused by the collision and friction fit is too large, then the wind from this gap into the bearing chamber The lubricating oil out, increased to speed up the leakage. After finding the source of the leak, using craft glue injection inside the bearing sleeve plus external diversion ring, completely solve the leakage problem. 1 Causes and solutions for blower bearing oil spills, in 1999, the installation of a set of application transformation to eliminate the negative pressure device bearing the oil spill (see Figure 1). Vacuum pumping apparatus imported oil suction blower duct, although solved lubricant oil pollution and ground blower bearing problem, but the oil is drawn into the blower, lubricants accumulating pollution caused by the impeller blower in the blower housing, lubrication The amount of oil increases, up the oil more frequently. From 2002 to 2005, by improving the labyrinth seal, install exhaust cap, installed cabinet felt seals and other measures, it has yielded some results, but does not solve the leakage problem fundamentally. After long observation, found that after the filling hole chock unscrew the cap has a strong air flow from the bearing housing, greater airflow pressure inside the bearing lubricant with strong turbulence fly with oiler (without funnel ) is to fill the inner bearing oil, oil by air blown fly inverted parabola. Analysis: Under normal circumstances bearing high-speed rotation, the wind from the outer casing and sleeve bearing housing gap blown, since the bearing cap, the labyrinth seal impede a positive pressure so that the cavity, was the result of strong pressure airflow blower high pressure air inside the bearing caused by fleeing into the bush and impeller gap, between the shaft and the bearing inner ring. Sleeve bearing inner ring and axial positioning of the fan impeller plays the role of the sleeve and the shaft clearance fit. Bush after long running loose on the hub tapping screws used to fix the sleeve (see Figure 2), with good results in a short time, but less than a month to run the hub will still loose. Analysis: To solve loose fit clearance must have a solid filler, must be eliminated to solve the oil spill bearing blower to blow the wind problem, and then presented to the high-pressure dispensing gap between the sleeve and the shaft axis dispensing solve set loose channeling wind; sleeve outer circle change plus wind deflector way to eliminate bearing oil leakage. December 2006 during minor repairs, No. 1 furnace blower B sleeve lengthwise central location along the circumference of the drill four Φ7 uniform through-holes, and then tapping M10 threads. With high pressure dispensing gun three times symmetrical and evenly into the gap between the sleeve and the shaft solid state plastic injection, plastic injection three times a symmetrical purpose is to prevent the sleeve between the sleeve and the deflection caused by the bearings and blower housing friction on the sleeve from the housing 5cm welding diversion ring (see Figure 3). After transformation 2 conclusion after running more than a year of observation, bearing oil spill does not appear, bushings well positioned loosening did not occur. Transformation effectively eliminates the sleeve and the shaft and the fan impeller and the bearing inner ring between the collision and friction, eliminate the oil leakage, bearing lubrication under normal working conditions, effectively preventing the bearing burn and fire, to protect the blower and safe operation of the unit, saving oil, eliminating the duct vibration, lower noise, reducing the operating personnel work intensity, improve the working environment, with significant economic and promotional value.