On-line forced grinding method of rotary kiln supporting roller bearing bushes without production

Abstract

The invention discloses a no-shutdown online mandatory polishing method of a rotary kiln supporting shaft and supporting roller, and belongs to the technical field of maintaining method of supporting shafts and supporting rollers. According to the technical scheme, the method includes (1) mandatorily injecting water to a heat shaft and roller for cooling; (2) injecting lubricating oil after cooling for mandatory lubricating, and polishing heat drawing points of the shaft and roller in a no-shutdown on-line manner through a piece of 0# waterproof abrasive paper and a piece of liner with oil alternately simultaneously; (3) after polishing, adopting a circulate cooling oil pump to inject gear oil to a damaged support to perform circular lubrication, washing and secondary polishing for 36 to 60 hours, changing with fresh oil, and allowing equipment to resume to operate normally. The no-shutdown on-line mandatory polishing method of the rotary kiln supporting shaft and supporting roller is safe and reliable; on conditions that the supporting shaft and supporting roller is not broken, the method is realized in an on-line manner with constant speed and secondary pollution occurs rarely, and is applied to on-line maintenance of the rotary kiln supporting shaft and supporting roller.

Description

technical field [0001] The invention relates to a maintenance method for the supporting wheel bearing bush of a rotary kiln, and more specifically relates to an on-line forced grinding method for the supporting wheel bearing bush of the rotary kiln without stopping production. Background technique [0002] The heating problem of the bearing pad of the rotary kiln is the most common situation in the operation, and one of the most critical factors to improve the operation rate of the rotary kiln is to solve the heating problem of the bearing pad of the kiln. As the fulcrum of the rotary kiln during the movement of the supporter, the supporting wheel bears three major loads: heat load, material load and kiln self-weight, so it is particularly important to protect the bearing bush of the supporting wheel so that it can operate normally and safely. [0003] At present, the rotary kiln supporting wheel bearing pads are heated and damaged. The kiln must be shut down or the producti...

AI Technical Summary

Problems solved by technology

[0003] At present, the rotary kiln supporting wheel bearing pads are heated and damaged. The kiln must be shut down or the production can be reduced. It cannot be repaired without stopping production. Generally, it is necessary to stop production or decelerate the treatment. The deceleration increases the load on the injured bearing pads, increases the processing time, and wastes more. Lubricating oil, not to mention increasing the maintenance cost, a large amount of oil and water mixed pollute the environment, if not handled properly or thoroughly, it will be confused by the surface phenomenon, and oil and water are difficult to mix and cannot form an oil film on the injured supporting wheel shaft, so it is easy to cause hugging The tiles and overturning of the tiles will bring unnecessary secondary damage to the body and equipment; when the bearing bushes are overheated, the only way to deal with it is to stop the kiln for grinding or replace the bearing bushes. Even if the bearing bushes are replaced, the treatment may not be perfect, because There are many reasons for the heating of the wheel bearing pads. If the cause of the heating is not thoroughly discovered and eliminated, the new and old shafts that are still in the running-in period will be damaged again.