Release time: March 25, 2019 Views:five hundred and thirty-four
Repair and maintenance of impeller In the initial stage of impeller operation and all regular inspection, whenever there is an opportunity, the impeller must be checked for cracks, wear, dust and other defects.As long as possible, the impeller must be kept clean, and the dust and rust on the impeller must be removed regularly with a steel wire brush, because with the extension of operation time, the dust can not uniformly adhere to the impeller, resulting in impeller balance damage and even rotor vibration. As long as the impeller is repaired, it is necessary to make dynamic balance again.If possible, the portable trial balance instrument can be used to balance on site.Before dynamic balancing, all set bolts must be checked for tightness.Because the impeller has been running in an unbalanced state for some time, these bolts may have been loose.
Maintenance of Bearing Department
Check the oil supply condition of bearing lubricating oil frequently. If there is oil leakage in the box, the bolts of the end cover can be tightened a little. If this is not good, new sealing packing may have to be used.When the bearing lubricating oil is in normal use, it should be replaced at least once in half a year. When it is used for the first time, it should be carried out after 200 hours of operation. The second oil change time should be 1-2 months. After that, the lubricating oil should be checked once a week. If the lubricating oil does not deteriorate, the oil change can be extended to once every 2-4 months. The lubricating oil of the specified brand must be used during the replacement (as specified in the general drawing)After the old oil in the oil tank is completely drained and cleaned, the new oil can be filled in.
If the fan bearing is to be replaced, the following items should be noted: Before installing the new bearing, the bearing and bearing housing must be clean.Put the bearing in the oil with the temperature of about 70-80 ℃ and then install it on the shaft. Do not assemble it by force to avoid damaging the shaft.