Fan maintenance and cause of failure
The author:AdminPopularity:419release
time:2017-08-09
(A) fan maintenance work system
1. Fan must be used by hand, hand repair.
2. The fan is not allowed to run sick.
3. Regularly remove the dust inside the fan, especially the impeller on the dust, dirt and other impurities to prevent corrosion and imbalance.
4. Fan maintenance must emphasize the first power outage.
5. The sensitivity of the thermometer and oil standard is checked regularly.
6. In addition to each repair should be replaced after the oil, the normal case of 3 to 6 months to replace the oil.
(B) the main failure of the fan and the reasons
1. bearing box violent vibration
① fan shaft and motor shaft are not concentric, coupling equipment distortion
② chassis or air inlet and impeller friction
③ the basic steel is not strong
④ impeller rivets loose or impeller deformation
⑤ impeller shaft and axis loose, or coupling bolt loose
⑥ chassis and bracket, bearing box and bracket, bearing box cover and other connecting bolts loose
⑦ fan inlet and outlet pipeline installation is bad
⑧ rotor imbalance, induced fan blade wear
2. The bearing temperature is too high
① bearing box violent vibration
② lubricating grease quality is not bright, deterioration, with too much dust, sticky sand, dirt and other impurities
③ bearing box cover, seat bolts tightening force is too large or too small
④ shaft and rolling bearing installation skew, before and after the two bearings different heart
⑤ Rolling bearing damage
3. The electrode current is too large or the temperature rise is too high
① When driving the intake pipe gate or throttle valve is not closed
② flow exceeds the specified value
③ fan transport gas density is too large or sticky material
④ motor input voltage is too low or power supply single-phase power
⑤ coupling connection is not correct, the skin is too tight or uneven gap
⑥ by the bearing box violent vibration of the impact