The cause of oil leakage of gear pump and its maintenance method
Gear pump oil leakage in the whole hydraulic industry is a relatively common phenomenon, but in summary, nothing more than two points, the first is the internal pump oil leakage, the second is the pump cover or gear pump pump body oil leakage.
Then, for the gear pump oil leakage causes and maintenance methods are what? Fox, the 8-year experience of Hans of A&S Hydraulic Co.,Ltd w maintenance department ，will going to go through them.
Gear pump internal oil leakage: the internal gear pump because of long-term under high pressure, so that the left, right two pump cover and pump body connection bolts under tension longer, resulting in loose oil leakage;Due to the hydraulic pump in the transmission of oil substances, susceptible to the impact of a variety of reasons, resulting in gear pump oil leakage failure from time to time, below we are specific analysis of the cause of oil leakage.
The influence of pipeline system cleanliness of gear pump.Due to the hydraulic pump in the transmission oil material itself contains some impurities, and the entire pipeline, the internal gear pump itself can some sticky sand, under the effect of pressure or fall off, the hard particles in the process of high-speed operation of the gear pump, not only led to growing friction gear pump, at the same time also obtain energy become a high kinetic energy of particles, crashed into the gear pump, the sealing ring of the gear pump under the strong impact, accumulate over a long period, it is easy to breakdown, resulting in oil spills.
Gear pump own parts quality problem unqualified.Gear pump parts are complex, because of the operating principle of gear pump and convenient maintenance and management, it is doomed to its shell pump body is not likely to be integrated, so its sealing performance on the overall performance of the gear pump plays a decisive role.
Pump cover or pump body with radial crack track, scratch marks, oil seal damage, etc. Also can cause oil leakage: gear pump and the host installation does not meet the requirements.Gear pump are connected by a shaft between the host and the host to gear pump conveying power, when installation, for gear pump with the host of coaxial error is less than 0.05 mm, if the installation of spline shaft of gearbox and the beating of the rotary center spline shaft super bad, so it is very easy to make the gear pump seal in the high-speed shaft radial force by the strong, resulting in seal shaft seal is lax, the appearance of the spill.
Gear pump front cover end and transmission assembly face between the asbestos pad is too thick.Due to the easy deformation of asbestos pad, so in the installation process, the front end of the gear pump and transmission may be due to the fixed bolt clamping force is not consistent, and lead to the pump and transmission between the deviation, over time wear equipment will appear oil leakage phenomenon.
To sum up, the causes of oil leakage of the gear pump and maintenance methods, but is to pay more attention to the usual gear pump operation, do daily maintenance, when there is oil leakage in a timely report to deal with.Do not think that oil leakage is not serious and holding the use of psychological, this psychological may lead to your whole hydraulic pump scrap!