Analysis of Common Faults of Gear Pump

For the gear pump related failure, Guangdong gear manufacturers made some analysis for us: The 1. gear pump does not produce oil. At this time, Guangdong gear manufacturer suggests that the operator can first check whether the rotation direction of the gear pump is correct. We all know that gear pumps are generally divided into left and right rotation. If the rotation direction is not correct, the pressure oil formed by the volume difference generated by the internal meshing of the gear may cause the oil seal to be washed out and leak oil. On the other hand, check whether the oil inlet of the gear pump is blocked, this also makes it difficult to absorb oil. The 2. oil seal is washed out of the situation is mainly divided into several, one is the rotation direction of the gear pump is not correct; the second is the bearing of the gear pump to bear the axial force; the third is the gear pump to bear excessive radial force. 3. the gear pump burst, one may be due to the oil pipeline blocked by foreign matter, resulting in unlimited pressure rise; the second is the safety valve pressure adjustment is too high, the safety valve opening and closing characteristics of poor, these are likely to make the gear pump can not be properly protected. 4. gear pump local heating phenomenon, may be due to the system overload, this situation is mainly manifested in the pressure or speed is too high; the second may be due to poor oil cleanliness, resulting in increased internal wear, so that the volumetric efficiency decreased, oil from the internal gap leakage throttling and heat; may also be due to the oil pipe is too thin, resulting in high oil flow rate, a lot of heat.