There are many types of coal washing machines, such as gangue lifting machines, raw coal discharge machines, multifunctional coal washing machines, and other equipment. The coal washing machine mainly utilizes the principle of different densities, and then uses wind or water to layer the coal seam, discharge poor coal quality, and obtain the most suitable clean coal.

　　It is prohibited to use the method of scraping and rolling coal to adjust the deviation when the equipment is in operation. Moreover, it is also prohibited to clean the coal stored on the equipment rack and drum. When cleaning the rollers, head, and tail drums, strict rules and regulations must be followed, and it is important to remember to cut off power and hang tags to prevent danger if someone is not aware that someone is cleaning the equipment and then turning it on. It is also prohibited for anyone to sit, stand, walk, lie, cross on the conveyor belt of the belt conveyor, nor to stand on the rack to sweep water, shovel coal, or touch the conveyor belt, Because some dangers always happen unintentionally

　　At this point, it is necessary to set up protective shields. No factory is allowed to use belt conveyors for handling tools or other objects, when the equipment rack is a relatively high belt conveyor. Only by properly maintaining the coal washing machine and not violating the safety regulations of the equipment, can normal and efficient production be achieved, and thus the interests of the manufacturer can gradually increase.