The vertical roller mill is a grinding mill with fine crushing, drying, grinding, powder selection and conveying. It is also widely used, but its wear problem has not been solved. Now, finally The way is.
The vertical roller mill has a high proportion of fineness, high precision of the powder selection machine and high efficiency of powder selection. It is very suitable for the production of ultra-fine powder, so the vertical roller mill is warmly welcomed by the customers.
The grinding roller part of the vertical roller mill is always very damaged very quickly, including the bearing of the grinding roller part, and the damage is also amazing. This is inextricably related to its working principle. Can it be solved? It is.
The assembly requirements of vertical grinding roller bearings are relatively strict, and the assembly is generally carried out by cooling the bearings in dry ice. Once there is a gap between the bearing and the bearing chamber, it will affect the normal operation of the bearing, resulting in bearing heat, which will lead to bearing sintering.
However, traditional methods such as soldering brush plating have certain drawbacks. Repair welding will cause thermal stress to cause damage to the bearing material. In severe cases, it will be deformed or even broken. The brush plating is heavy and the thickness of the coating is limited, and the application is greatly limited. Nowadays, polymer composite materials not only have the strength and hardness required by metals, but also have the concession that metal does not have. Through the processes of “mold repair”, “component correspondence”, “machining”, etc., it is possible to ensure a large degree of repair. The size of the part and the matching part are matched.
Moreover, by utilizing the comprehensive advantages of the composite material itself, such as compression resistance, bending resistance and elongation, the vertical grinding can effectively absorb the impact of external force, greatly resolve and offset the radial impact force of the bearing on the shaft, and avoid the gap. The possibility of successfully avoiding secondary wear of the equipment due to increased clearance. It can be said that the birth of new materials has brought hope to the wear of the grinding roller part of the vertical roller mill. With the new material, the vertical roller mill is more wear-resistant, and its service life will continue to increase, making the position of the vertical roller mill in the grinding industry. More unmovable.