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In order to make sure the Raymond mill can work safely for a long time, the workers should equip the necessary examination and repair tools and the machine lubricating oil in the production shop. The grinder roll, grinder ring and the scraper knife are the main easy-wearing parts, so the workers should change new roll device after the machine is used for about five hundred hours, and cleanse and maintain the rolling bearing. Before and after the machine is used, the workers should also carefully check the small accessories such as the connection bolts and nuts and confirm whether the lubricating oil is sufficient or not. During the working process of the Raymond mill, there should be some technicians with professional technology and knowledge to watch it in order to avoid unnecessary emergency.

The common failures and the solutions of Raymond mill are listed as follows:

(1) When the grinding mill is working, the powder cannot be discharged or only a small amount of powders are discharged from the discharging mouth. It may be caused by that the powder locker is not adjusted well or not sealed up so that the powders are sucked back to the machine; the scraper knife is seriously abraded so that the materials cannot be scraped; the air flue is blocked; the pipe leaks air and is not sealed up. Then the workers should recheck and adjust the powder lock, change new scraper knife, seal up the pipe and clean the materials in the air blue and feed materials for grinding.

(2) The granularity of the final product is not even. The impeller of the analytical engine is abraded so that it cannot analyze the granularity of the powders or the air amount of the air blower is not appropriate, then the workers should change the impeller of the analytical engine and resolve the problem that the granularity of the powder materials are too large and increase the air amount so that the powder materials will not be too fine in granularity.ball mills:http://www.crusher-machine.com/21.html
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(3) The main engine has loud noise and vibration and the amount of the materials feeding is small. The scraper knife is seriously abraded so that it cannot scrape the materials; the foundation bolt is loose; the materials are too hard so that the impacting force is huge; the grinder roll and ring are severely deformed. Then the workers should timely adjust the amount and granularity of the feeding materials, change new scraper knife, grinder roll and ring.

(4) The powder feeding bearing of the grinder roll device is damaged which is caused by the fact that it is not regularly maintained or cleaned for a long time, oil break or the seal ring is damaged, and then the workers should timely clean the bearing according to the regulation and change the oil seal and add lubricating oil.

(5) The air blower vibrates abnormally. There are powders deposited on the fan blade; the fan blade is abraded during the grading process so that it is not balanced; the foundation bolt is loose, and then the workers should clean the accumulated powders on the fan blade or change new blade; tighten up the foundation bolt without delay in order to ensure the stable operation of the machine.