Wear reason of glass fiber reinforced plastic water ring vacuum pump

The wear of glass fiber reinforced plastic water ring vacuum pump is essential, so what is the cause of its wear? Let's analyze the wear factors of glass fiber reinforced plastic water ring vacuum pump together 

The wear of the journal surface of glass fiber reinforced plastic water ring vacuum pump is uneven. The radial wear of the main journal and the connecting rod journal is mainly elliptical, and the maximum wear parts are corresponding to each other, that is, the maximum wear place of each main journal is close to the side of the connecting rod journal, and the maximum wear place of the connecting rod journal is also close to the side of the main journal. The crankshaft journal also has conical wear along the axial direction. The elliptical wear of journal is caused by the uneven distribution of the force acting on the journal along the circumference

When the engine is working, 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 radius of the crankshaft, resulting in the maximum wear on the inner side of the connecting rod journal and forming an ellipse. The reason for the conical wear of the connecting rod journal is that the oil passage leading to the connecting rod journal is inclined. When the glass fiber reinforced plastic water ring vacuum pump rotates, the mechanical impurities in the lubricating oil accumulate on one side of the connecting rod journal under the action of centrifugal force, which accelerates the wear of the side journal and makes the wear of the connecting rod journal cone-shaped.

In addition, the bending of the connecting rod, the cylinder center line is not vertical to the center line of the glass fiber reinforced plastic water ring vacuum pump, etc., will make the axial force of the journal uneven, resulting in wear deflection. The wear of the main journal is elliptical, which is mainly due to the influence of centrifugal force of connecting rod, connecting rod journal and crank arm, which makes the relative wear between the side close to the connecting rod journal and the bearing larger. In addition, abrasions and burns may occur on the surface of the journal. Scuffing is mainly due to the oil is not clean, which large hard mechanical impurities in the journal surface scratch caused. The burn on the surface of journal is caused by Bush burning, which is mainly caused by insufficient lubrication, too thin oil and blocked oil circuit.

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