The leaking part of the gear pump of the single-column hydraulic press

The hydraulic gear pump has three parts that are prone to leakage during the working process, one is between the two sides of the gear and the end cover, one is the gear pump meshing gap, and the other is between the inner hole of the pump body and the outer circle of the gear; Since the holes in the pump body and the gears are meshed with the tooth surfaces of the two gears, the biggest benefit for the leaking oil tank is the axial clearance between the two sides of the gears and the end cover.

The leakage area of ​​the gear pump is relatively large, and the leakage path is relatively short. The leakage accounts for 75%-80% of the total leakage of the single-column hydraulic press. The larger the axial clearance of the gear pump, the greater the leakage; the volumetric efficiency is higher. Low, if the clearance is small, the mechanical friction loss between the end face of the gear and the end cover of the pump will increase, resulting in a decrease in the mechanical efficiency of the single-column hydraulic gear pump, so the volumetric efficiency of the ordinary gear pump is low, Then the output pressure will not be easy to increase.

In order to realize the high pressure of the gear pump of the single-column hydraulic press, and at the same time to improve the efficiency of a pressure and volume of the gear pump, it is necessary to take structural measures, and then compensate for the clearance of the end face and reduce it as much as possible. The radial unbalanced force can improve the stiffness of the shaft and the bearing. The greatest benefit to the amount of leakage is that an automatic compensation device should be used for the clearance of the end face. This article is from the official website of the manufacturer WORLD Press Machine www.pressmachine-world.com, please indicate the source for reprinting!