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Analysis of the Causes of Oil Leakage of High Power Oil Pump Motor Sliding Bearings
The oil leakage of the high-power oil pump motor frequently occurs during use, and the most serious part of the oil leakage phenomenon is the sliding bearing. For the reason of the oil pump motor oil leakage, the Dalan oil pump motor manufacturer tells you the specific solution is as follows: 1. The sliding bearing has a large pressure difference between the inside and the outside of the bearing. The lubricating oil itself has a certain pressure, and the oil will generate bubbles when the shaft is running. This creates a certain amount of pressure. 2 When the motor is running, a certain negative pressure will be generated due to the action of the fan, thereby increasing the pressure difference between the inside and outside of the oil, resulting in oil leakage. In order to balance the pressure difference between the oil chamber and the outside, the oil chamber and the outside are provided with a vent pipe for pressure difference balance, but during the use process, clogging may occur, causing the oil chamber pressure to increase and cause oil leakage. Solution: Check regularly if the balance tube is loose and clean the tank vent tube in time. 2, the oil pressure adjustment is not in place, resulting in poor oil return 1 oil pressure is too high or too low will lead to poor oil return. 2 If the oil pressure is too low, the oil stays in the oil chamber for too long, and the temperature rises during the operation of the shaft, so that the oil mist causes the pressure to be too high. 3 If the oil pressure is too high, the oil returning capacity will be insufficient. The oil content in the oil chamber is too large, and the oil level is too high to increase the internal pressure. Solution: Adjust the forced lubrication pressure to 0.1 to 0.8 MPa, so that the oil level of the oil chamber is at 1/2 to 1/3 of the sight glass, and it is better to keep the oil returning smoothly. 3, the unreasonable design of the return oil pipeline leads to poor oil return. The unreasonable design of the return oil pipeline leads to an increase in the oil chamber pressure and poor oil return. 2 There are impurities in the oil return line or the cleaning in the pipeline is not clean, etc., which will cause the filter to become clogged, resulting in poor oil return. Solution: The oil chamber outlet of the return line should be at the same level as the inlet port, and the entire return line is inclined at 15° to the return tank so that the return line can naturally return to the oil. At the same time, the filter and the entire lubricating oil line should be cleaned regularly. 4, due to long-term friction between the floating palace and the shaft, the wear is serious, resulting in excessive gap between the shaft and the shaft; the elastic modulus of the floating spring seal fixed spring, so that the floating palace seal is loose, resulting in increased clearance. Solution: Regular inspection and timely replacement. 5. The sealing oil block and the shaft contact surface wear make the gap too large; the oil return hole in the sealing oil block is too small or the impurities are blocked, which cannot meet the actual oil return amount. Solution: Replace the sealing oil block and modify the sealing oil block. Change the material of the sealing oil block and the shaft contact surface, replace it with wear-resistant material; increase the oil return hole to meet the actual oil return needs. 6. During the installation process of the sliding bearing, the sealing between the sealing oil block and the oil chamber sealed between the tile cover and the lower tile cover on the bearing box is improper; the long-term operation causes the fastening bolt to loosen and the sealant to deteriorate and lead to deterioration. The seal is not strict. Solution: During the reloading process, the sealing surface is made of reliable sealing glue and applied evenly and appropriately. When the second reloading is finished, the original sealant must be cleaned before applying a new sealant. 7, oil quality changes make the oil more foam and increase. In the entire lubrication system, the foam occupies more operating space, which leads to an increase in the oil pressure in the oil chamber. The large pressure difference causes the lubricating oil to escape from the shaft gap between the shaft and the floating valve seal and the sealing oil block. Solution: Regularly check and analyze the lubricating oil. If there is any problem with the oil quality, it should be replaced in time. ----- Responsible Editor: Dalan Oil Pump Motor 02- Purchasing Consultant Copyright http:/(Dalan Motor) Reprint, please indicate the source http://news.chinawj.com.cn