Aligning a Rotary Kiln
Equipment alignment is a very important procedure and should be conducted by professionals. Once properly aligned, the equipment will be significantly less vulnerable to wear and less likely to receive damage. Strommachina specialists can help you in aligning your industrial equipment. The procedure usually involves the following.
- Drum Inspection
After initial installation, our specialists will closely inspect the drum and check how it works under normal load. During the inspection, various issues with alignment are being discovered and the rotary kiln is being thoroughly observed. The examination is crucial for finding misaligned components that can lead to wear and damage. There are several key observation points:
- Searching for unusual noises such at clattering
- Thorough observation of various components in search of visible wear
- Frequently moving components like thrust rollers, gear components, trunnion wheels, and other parts
- Inspecting positioning
For further inspection the drum should be stopped. When the drum is shut down, our specialists will start gathering important data about positioning of the equipment. Obviously, the equipment also should be turned off in order to prevent accidents during the alignment process.
The precise positioning and excellent alignment are achieved through using lasers instead of manual measurement methods. Lasers allow to create a comprehensive 3D model of the kiln and find the best way to correct the alignment of system components. Special software helps to process gathered data and create an efficient scheme of alignment.
- Data analysis
The data gathered during laser measuring is crucial for further success of the alignment process. After collecting all important information, our specialists will focus on pinpointing problems that could be caused by misalignment.
After thorough calculations, the data is being used to calculate the amount of adjustments that should be applied to the equipment. Our specialists will slightly correct skew and shimming of various equipment components in order to achieve balanced alignment.
Shimming and skewing are separate processes and executed differently. For shimming we use metal plates that are placed under bearings. This helps to adjust the elevation and even out the height of various equipment parts. Skewing is basically moving the bearings. This helps in adjusting the rotary kiln so that it would be aligned with the centerline. Depending on the nature of the misalignment, various techniques have to be applied in order to align everything properly.
- Correcting the Float of the Drum
Float is the positioning of the drum relative to thrust rollers. The latter are usually installed with a precise tolerance equal to a quarter of an inch. These prevent the drum from freely drift during its radial motion. In order to prevent significant wear and downtime, the float should be adjusted perfectly so that the drum is positioned evenly between thrust rollers and has no imbalance in drifting. Slightly skewing the trunnion bearing is usually enough to achieve appropriate float.