Mechanism analysis of end cover clearance of ball mill caused by Red Star Machine Henan Hongxing

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Mechanism analysis of end cover clearance of ball mill caused by red star machine

Ball mill It is widely used in metallurgy, mining, cement, building materials, chemical industry and electric power industry. As an important grinding equipment, it plays an important role in the whole beneficiation process. During the operation of ball mill, there is often a gap between the end cover flange and the cylinder flange, which will lead to the deviation between the end cover and the cylinder flange, which will have a great impact on the normal operation of the ball mill. The correct analysis of the failure mechanism and find out the scheme can greatly improve the production efficiency of enterprises.

 Ball mill

Mechanism of end cover gap of ball mill

Due to the nature of the ore and Beneficiation process Under normal conditions, the service life of the ball mill cylinder is much longer than that of the end cover of the mill. Therefore, it often occurs that an old cylinder needs to be equipped with 2-3 new end covers.

 Ball mill

According to the regulations, the installation clearance between the end cover flange and the cylinder flange of the mill shall not exceed 0 ~ 3 mm. In the actual installation process, due to the combination of new and old parts and flange deformation and other reasons, flange installation clearance often exceeds this data. If there is a gap, the worn steel ball fragments may wedge into the gap randomly from a larger point on the circumference of the flange. The wedged fragments are impacted by the falling steel balls and continue to wedge deep into the gap. As a result, the flange gap increases continuously at the steel ball fragment and the surrounding circumference, thus increasing the probability of subsequent larger thickness debris wedging in. The gap of the flange is increasing, and the corresponding connecting bolts are subject to tensile elastic deformation and even plastic deformation. At the same time, a large amount of mineral powder was filled. In this way, the end cover of the whole grinding machine is inclined relative to the cylinder body.

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