1.As the imported gear pump suction pipe is too small or too long. If it is due to the pipeline is too long or too thin should change the suction piping layout, the vacuum degree is lower than the rated value of the gear pump.
2.Due to the gear oil pump on the oil suction pipe installed oil filter, and filter the volume is too small through the liquid flow caused by the problem, replace the oil filter can be.
3.There may be imported pipe seal is not strict or bearing seal suction air, leading to the oil in the bubble this situation should replace the new sealing ring, the other return pipe should be below the oil surface.
4.Due to the pump body or pump cover with a seal is not good because of damage or damage, repair pump body pump cover or replace the new pump cover.
Introduces the basic concepts of acoustic energy and acoustic impedance, attenuation and acoustic wave propagation equation of ideal fluid medium in the actual medium; analyzed the mechanism of fluid voices and excitation source, and the sound wave equation of fluid is derived.
5. Due to the oil suction pipe of gear oil pump or filter oil filter, stop check to confirm whether it is blocked or not.
