The reasons and disposal of motor bearing oil

High power motor in the process of using oil leakage phenomenon, frequent attacks significantly characterized by oil leakage phenomenon of sliding bearing structure, in the process of maintenance, in view of the motor oil may be the reason to stop, it is concluded that the following treatment plan. 1 sliding bearing pressure difference inside and outside big force smooth bearing shell, smooth oil itself has a certain pressure, oil will produce bubbles when the shaft is running to produce a certain pressure. Motor in operation because of the fan will produce certain negative pressure, so as to increase the oil inside and outside differential pressure, cause oil leakage. In order to balance the oil inside and outside differential pressure, oil chamber is equipped with ventilation pipe to stop the differential equilibrium with the outside world, but in use process will produce infarction, increased oil chamber pressure formation oil. Treatment plan: can periodically check balance tube is loose and timely settlement tank vent. 2 hydraulic control does not reach the designated position from poor oil return oil pressure too high or too low will cause oil return not free. Oil pressure is too low, cause the oil in the oil chamber for a long time, in the process of shaft operation cause temperature rise, thus rendering oil mist from pressure is too high; Oil pressure is too high, can make the oil return to the lack of, a large amount of oil in the oil chamber of the oil level is too high to increase the internal pressure. Treatment plan: regulate force smooth at zero pressure. 1 to 0. 8 mpa, make the oil chamber of the oil level in the position of the sight glasses 1/2 ~ 1/3, and adhere to the oil return flow is advisable. 3 return pipe design unreasonable return pipe road design unreasonable can cause oil return, not free to cause indoor pressure increases. Back into line with the impurities or the pipe cleaning not net will incur filters such as infarction, forming oil return. Treatment plan: return pipe oil export should be with the inlet chamber of the road in the same way, the whole line is under 15 ° inclined to back to the fuel tank and natural oil return to return pipe. At the same time should be regular cleaning filters and the smooth line. 4 floating palace seal loose floating palace and shaft interface due to long time friction, wear, which causes large clearance between shaft; Seal (floating palace FIG. 1) Fixed spring elasticity coefficient change, make the floating palace seal is loose, incur clearance increases. Treatment plan: regular check, change in time. 5 seal oil baffle and shaft interface wear make clearance is too large seal oil baffle and shaft surface wear clearance is too large; Seal oil block oil return hole is too small or impurity infarction, cannot satisfy the practical oil return amount. Treatment plan: a change in seal oil baffle, the sealing oil baffle to stop. Change oil seal and shaft interface material, change of wear-resisting material; Increase the oil return hole ( FIG. 2) Make it meet the demand of practical oil return ( Shoulds not be too big) 。 6 handling in the process of sliding bearing device, sealing in the bearing box on tile cover and lower cover seal between the sealing oil block and oil chamber seal between the improper disposal; Long time operation by fastening bolt looseness, aging sealant metamorphosis to incur untight seal. Treatment plan: in the process of back pack, the contact surface with strong performance sealant, and daub, right amount on average. Secondary returned it must be the original sealant when disposing of clean before applying new sealant. 7 oil change the oil in a bubble and a smooth increase from time to time in the whole system, the more bubbles occupy more space, thus cause indoor pressure increases, large pressure difference by smooth oil from the shaft seal and seal oil block and floating palace with the axis of the gap between appear. Treatment plan: smooth oil regularly to stop inspection, such as oil have problems to change in time. The motor sliding bearing oil spill reason analysis and handling methods in practice to use a certain effect, to ensure the safe and stable operation of the unit.