RY air-cooled centrifugal hot oil pump bearing. Packing box heating cause machine maintenance

RY air-cooled centrifugal hot oil pump bearing. Stuffing box heat cause machine repair failure cause 1 stuffing box insufficient lubricant or stuffing box does not go oil. The packing in the stuffing box is pressed too tightly. 3 The pump shaft is bent. RY air-cooled centrifugal hot oil pump bearing. Packing box heating cause machine maintenance [cause of failure]
1 The stuffing box is insufficient in lubricating oil or the stuffing box does not go into oil.
2 The packing in the stuffing box is pressed too tightly. 3 The pump shaft is bent.
4 Couplings connect the two shafts of the two drive shafts or the drive belt is too tight.
The bearing of the 5RY air-cooled centrifugal hot oil pump is incorrectly installed or the gap is not appropriate.
The bearing lubrication of the 6RY air-cooled centrifugal hot oil pump is poor (such as poor lubricating oil and insufficient quantity), resulting in serious or damaged bearing wear.
The balance hole of the 7RY air-cooled centrifugal hot oil pump is blocked, resulting in an increase in axial thrust.
[Maintenance method]
1 First, open the oil pump stuffing box gland to check the properties and filling of the packing. If the properties of the filler are mutated, the new filler should be replaced; if the filler is not filled correctly, the filler should be refilled (the number of layers of the filler is preferably 4 to 5 layers). Then, Botaibang checks the working condition of the oil seal ring. If the oil seal ring is deformed or damaged, it should be repaired or replaced. Finally, properly tighten the stuffing box gland.
2 Open the pressure lock cover of the oil pump, adjust the compression degree of the packing reasonably, and tighten the cap screw of the oil pumping box of the oil pump (the general oil drop is 60 drops/min).
3 Disassemble the pump body, take out the oil pump shaft for bench verification and find the bending part.
4 pairs of transmissions using a coupling can change the relative installation position of the oil pump and the power machine so that the axes of the two transmission shafts are on the same axis. If the adjustment is not over, the coupling should be repaired or replaced; for the belt drive, the tension of the drive belt should be adjusted properly.
5 Open the pump body of the oil pump and check the installation condition, rotation state and surface temperature of the bearing (the maximum temperature should not exceed 80 ° C, and the temperature should not exceed 40 ° C compared with the ambient temperature). The outer diameter of the bearing and the bearing hole are required. Should not be too tight and should not be too loose and turn freely. Too tight or too loose, you can adjust by adding a gasket (paper pad) on the bearing end face; if the bearing is damaged, you should replace the new bearing of the corresponding specification.
6 Open the pump body of the oil pump, take out the bearing and check it. If the bearing is seriously worn and damaged (such as ball falling off, falling apart, etc.), replace the new bearing of the corresponding model. If the lubricant in the bearing becomes dirty, drain the dirty oil, thoroughly clean the bearing with cleaning oil (kerosene or diesel), and then inject a proper amount of bearing lubricant (the oil pump bearing usually uses calcium-based butter). If the lubricating oil in the bearing is not dirty, the amount of lubricating oil in the bearing should be checked. If the amount of lubricating oil is insufficient, the qualified lubricating oil should be filled in an appropriate amount (but it should be noted that the lubricating oil filling amount should not be too much, otherwise it will cause The temperature of the bearing rises). Bearings without oil are generally caused by deformation and wear of the bearing oil map, and should be repaired or replaced depending on the specific conditions.
At the end of the bearing inspection, the bearing should be reassembled, and the bearing should be placed on the shaft. A sleeve with an inner diameter larger than the outer diameter of the rotating shaft and slightly smaller than the outer diameter of the inner ring of the bearing (to ensure uniform force on the inner ring of the bearing) against the inner ring , knock it in place. If the sleeve is not found, use a copper rod against the inner bore of the shaft and evenly tap along the circumference of the inner ring and place it in place. If the bearing is too tightly fitted to the journal and is not easy to tap into place, the bearing can be heated to 100 ° C and the shaft can be quickly placed with heat. In addition, when installing the bearing, the label must be outward so that the bearing model can be checked the next time it is replaced. Botou Taibang Pump & Valve Manufacturing Co., Ltd.

7 Check the unbalanced pressure balance hole on the rear cover of the oil pump impeller, and unblock the pressure balance hole where the blockage occurs, ensure that the pressure balance hole passes through the oil smoothly, and effectively reduce the axial thrust.
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