When the belt of vertical roller mill deviates in the middle of the whole equipment, a very effective way to deal with the problem is to adjust the position of the supporting roller group. In order to facilitate the corresponding adjustment, in the manufacturing process, the installation holes on both sides of the idler group should be processed to produce the shape of long holes.

The specific adjustment method is: when the direction of the belt deviation is determined, the side of the idler group should move forward towards the forward direction of the belt, or the other side of the idler group can move backward.

As the adjustment work of running deviation can only know the effect of adjustment after a period of running time, so as to determine whether the adjusted running state meets the requirements, it is necessary to pay attention to the movement amount of each adjustment work.