China Vane Pump , The Reason For The Looseness Of The Vane Pump Bearing
China Vane Pump will analyze the seven reasons for the looseness of the vane pump bearing
1. The output shaft of the mounted vane pump is not the same as the output shaft of the motor (the output shaft of the motor is deformed, the coupling is not concentric, the gap of the vane pump is too large, the fixing screw of Anhu is not tightened, etc.) or the top of each other Live, when the vane pump is working, the radial force is too large or the beating (irregular operation) damages the bearing and the shaft seal. If not treated in time, the pump core parts will wear out and be scrapped.
2, the motor bearing has been worn, this phenomenon can not be judged when the vane pump has no load, it is normal at no load, the motor output shaft swings due to the gap during operation, which drives the vane pump output shaft to oscillate and damage the bearing and shaft seal
3, improper assembly, because the vane pump is running at high speed, such as improper supply (improper installation or shaft package bias) is easy to cause damage
4. Pressure swing refers to the instability of the system when the vane pump is working. As long as the pump has no abnormal noise, it should be the problem of the total pressure valve (relieving valve). Check whether the spool of the total pressure valve is checked. Wear and damping, if there is any foreign matter blocking; if the pressure is oscillated due to the wear of the pump core components, the oil pump will have abnormal noise when working.
5. System pressure reduction means that the vane pump can reach the predetermined pressure when working, and the pressure will gradually drop during work, resulting in the system not working properly. If this phenomenon occurs in the initial installation of the pump, it should be caused by leakage of the control valve of the system or excessive oil temperature. If the above problems occur after using for a period of time, it is necessary to check whether the upper and lower oil distribution plates are worn (very flat). Wear), if the upper and lower oil distribution disc gap is too large, the oil temperature is too large (can not form a mucous membrane self-sealing oil), the control valve leaks will cause copper to drop
6. No pressure means that when the vane pump is working, there is no pressure in the system. First, check whether there is hydraulic oil discharge. If not, check whether the working direction of the oil pump is correct. Whether the coupling connection between the motor and the vane pump works normally. Check whether the core rotor and the blade are burned and cannot be pulled out of normal work. Twist the oil connector to see if there is any hydraulic pressure. If there is any proof that the pump is basically no problem, the problem should be control valve. Red leaks and the total pressure valve (relief valve) fails.
7, the system oil temperature is too high, the reason should be that the system’s pipeline is too small, the pressure is too high, the hydraulic oil can not be eliminated in time, the cooling system did not meet the requirements, etc., causing the oil pumping phenomenon of the vane pump, reflected in the pump body and system oil temperature High, increase the system piping according to the actual situation, or reduce the displacement of the pump (replace the small displacement pump core, adjust the cooling system to increase the cooling effect)
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