The wear of the journal surface of SK vacuum pump is not uniform. The radial wear of the main journal and the connecting rod journal is mainly elliptical, and their maximum wear parts correspond to each other, that is, the maximum wear parts of the main journal are close to the one side of the connecting rod journal, and the maximum wear parts of the connecting rod journal are also close to the one side of the main journal. The crankshaft journal also has taper wear along the axis. The elliptical wear of the journal is caused by the uneven distribution of forces acting on the journal along the circumference direction.
When the engine works, the comprehensive force acting on the connecting rod journal always acts on the inner side of the connecting rod journal, and the direction is outward along the crankshaft radius, which causes the greatest wear on the inner side of the connecting rod journal and forms an ellipse. The reason for conical wear of the connecting rod journal is that the oil passage leading to the connecting rod journal is inclined. When SK vacuum pump rotates, under the action of centrifugal force, the mechanical impurities in lubricating oil accumulate on one side of the connecting rod journal, which accelerates the wear of the side journal and makes the wear of the connecting rod journal conical.
In addition, the bending of the connecting rod and the non-perpendicularity of the cylinder center line to the SK vacuum pump center line will cause the uneven axial force on the journal and cause the wear deflection. The wear of the main journal is elliptical, mainly due to the centrifugal force of the connecting rod, the connecting rod journal and the crank arm, which makes the relative wear between the side near the connecting rod journal and the bearing larger. In addition, there may be abrasions and burns on the surface of the journal. The abrasion is mainly caused by the unclean oil, in which the larger hard mechanical impurities are scratched on the surface of the journal. The burns on the surface of journal are caused by burning bushes, which are mainly caused by insufficient lubrication, too thin oil and obstruction of oil circuit.
The wear factor of SK vacuum pump is what we should know. Only in this way can it be more convenient to use, which is also more conducive to our use.
What-is-a-vacuum-system
Dry-Screw-Vacuum-Pump-Application
Industry-Dry-Vacuum-Pump-Manufacturer
Water-Ring-Vacuum-Pump-Vacuum-Adsorption
没有评论:
发表评论