How to eliminate the influence of foam on the hydraulic press

Now due to the change in flow rate caused by the hydraulic pressure reduction, and then produced the bubble is the so-called cavitation phenomenon, when the oil bubble of the hydraulic press is taken to the high pressure area, the volume will become dramatically smaller, the bubble re-condenses into liquid so that the local air area becomes a vacuum, and the surrounding liquid body point is also high-speed to supplement this space. The collision of particles produces local high pressure to form hydraulic shock, which will produce a large local impact force on the wall of the pipeline and components, so that the metal wall is repeatedly subjected to severe impact resulting in fatigue damage and wall denudation, which is very harmful to the hydraulic system.

The bubbles or bubbles contained in the degraded hydraulic oil in the hydraulic press are known as invisible pollutants, which can not only reduce the rigidity and volumetric efficiency of the oil, but also compress or collapse instantly in the oil, similar to the state of adiabatic compression, which causes the oil temperature to rise sharply and destroys the sediment produced by the additives. The oil will turn black to accelerate deterioration and oxidation, and the lubrication performance will be reduced to accelerate the aging of the seal.

Then say the impact of the foam on the oil press, now Xiaobian to explain to you how to eliminate and eliminate this kind of impact, first of all, to use good defoaming oil, or add defoaming agent to the oil, so that the bubbles in the oil tank quickly float up and disappear, followed by the pipe distribution method should be correct, finally, to reasonably design the oil tank, the horizontal cross-sectional area is larger than the depth of the oil. The separator is set up to extend the residence time of the oil in the tank, the oil inlet and outlet should be as far as possible, and the volume should be as large as possible, so that the bubble or foam has a certain floating time, and the method of using the buoyancy of the bubble itself to float to the oil surface and dissolve into the atmosphere.