Rotary kiln during the work with the extension of time its parts will wear and thus reduce equipment precision, even influence of rotary kiln production. Therefore, must borrow rotary kiln maintenance methods of the restored, according to the maintenance workload size, points to repair and overhaul, minor repairs should be based on the rotary kiln use and maintenance condition compiling large, medium and minor repairs plan, major repair of rotary kiln is minor repairs and repairing methods, such work by stopping rotary kiln build by laying bricks or stones and kiln lining for larger scale of repair, had better be separated in 2 ~ 3 times stop rotary kiln build by laying bricks or stones kiln lining time phases overhaul. Only maintenance transmission device and reducer is allowed in bricklaying after work, but should also quickly in a short period of time to finish, overhaul requires a long time, should be replaced for rotary kiln all loss parts, inspection and adjust all units, including: change kiln cylinder section section, change gear ring, changing LunDai, roller brush wheel, kiln centerline to align, etc. Rotary kiln main parts wear to following degree requires replacement and repair need attention of rotary kiln gear transmission of tooth thickness worn 30% or 0.5 modulus, or hub-to-shroud has not resume damage, need to undertake change or repair. Kiln shell body segment festival cracks and local deformation, to carry out repair and replacement. Rotary kiln LunDai cross-section wear 20% or surface wear into tapered, polygons, and local appear wear tong crack must be replaced. When the roller and block axle neck diameter 20% or wear small roller rim thickness is ground to 25%. Or hub-to-shroud grinding conical or other special-shaped, or hub-to-shroud wear a tong crack, must be replaced or repair, replacement roller and block pulley, its corresponding lining tile must restart blow grind.

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