Factors Affecting Vibration of Vertical Mill and Its Treatment Method (-)

Vertical ball mill is a kind of mechanical equipment relys on pressure between grinding roller and grinding disc force to the grinding matrial, due to vertical mill has large processing capacity, high grinding efficiency, energy saving and pollution-free advantages, it has gradually become the most widely used powder Grinding equipment.
Vertical mill in the course of running, there will arise vibration of the phenomenon, so affecting the vertical mill vibration of the factors which have? How to deal with these bad vibration?

The factors that affect the vertical grinding vibration are summarized as follows:

1. Their own design
The problem of self-design lead to vertical mill operation vibration mainly includes the design of the feed tank structure, the shape of the extrusion surface design, roller pressure and other aspects design. The feeding groove must be designed so that the blanking point of the material is located at the center of the grinding disc so as to ensure the uniform distribution of the material on the grinding disc, so that the smooth running of the roller. The shape of the extrusion surface has a great influence on the role of the grinding disc, To ensure that the gap from the inside out, the pressure increases, is conducive to the stability of the bed and mill vibration reduction; each roller independent pressure, such a roller produced by the impact of vibration will not be passed to other mill roller, thus avoiding the vibration between the roller transmission and amplification; optimization the limited and the buffer device, base and other structures, the impact of the mill vibration is also great.

2. The basic design
On one hand, the foundation design must have sufficient strength and bearing capacity, on the other hand, need to consider the basis of the buried depth and the equivalent of the mills weight to determine the basis of the weight of the vibration suppression capacity, while avoid the mill vibration frequency Point to prevent resonance.

3. The influence of the material
The influence of the material on the vibration of the mill is mainly reflected in the three aspects: particle size, abrasive and moisture. Grain size is too large or too small will lead to the destruction of the gradation balance, resulting in material layer toughness or stiffness of the weakened; material easy to grind the poor, will lead to material in the vertical mill retention time is too long, fine material cannot be airflow out of the mill, the proportion of fine particulate material will gradually increase, the evolution of the material grain size is too small, the mill pressure increases, poor ventilation, material layer becomes very unstable, the load increase , The current increases, so that the mill produces a larger vibration; water is small, dry and slippery materials in the roller under the roller, it is difficult to reliably form a stable material bed in the mill, will inevitably lead to severe vibration roller, When the water is too large, in order to meet its drying requirements, the need for greater air volume and wind temperature, which resulted in increased pressure within the mill, the same will cause the machine vibration.