For medium and small rod mills with hollow trunnion support, due to the long hollow trunnion and small cross section, there is little room for improvement, and the 3.8×13 mill designed for the factory is given the specified requirements. It is designed as a hollow trunnion.

In order to maximize the possibility of the material entering the rod mill and falling on the outer layer, it is considered that only some auxiliary measures are taken to increase the friction between the material and the hollow trunnion, so that the material leaves the hollow trunnion and enters the rod mill. The position is improved. However, this will inevitably lead to the phenomenon that the feed is easy to block and easy to return, which affects the normal production of the rod mill. Therefore, only the rotating ribs were added in the design again.

Also for the 3.8×13 sliding mill, the room for improvement is large due to the large feed cross section. It can be realized by taking a certain angle between the center line of the slide and the center line of the mill and changing the inclination of the feed chute (Fig. 26), so that the material is thrown to the O point, thereby achieving an ideal progress. Material mode, give full play to the characteristics of large grinding machine grinding ability. The determination of the position of the O point can be determined by the trajectory of the grinding body designed by the mill, or the actual position of the O point can be roughly determined by the grinding sound during the low load operation of the mill.

Through the above improvement, the material can be more reasonably and evenly entered into the grinding area, and the coarse material can be gradually moved from the region with strong grinding ability to the region with weak grinding ability. At the same time, the grinding noise of the grinder coarse grinding bin is greatly reduced, the number of collisions between the grinding body and the grinding body and the lining plate is reduced, the useless work loss is reduced, the loss of the grinding body and the lining plate is reduced, the grinding efficiency is greatly improved, and the rod mill is improved. Taiwan production. The above describes the improvement of the feeding method of the rod mill!

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