Sealed Guide Roll Support Unit for Contamination-Free Lubrication
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Solution Overview
Problem
Continuous casting guide rolls face lubricant degradation due to thermal radiation, steam, and pollutants, leading to frequent lubricant consumption and waste, with conventional sealing methods failing to prevent contamination effectively.
Innovation Solution
A support unit with a housing, isolators, and pre-filled lubricant enclosed between the bearing and isolators, forming an independent, sealed structure that eliminates the need for continuous lubricant replenishment and reduces lubricant usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional radial inner lip seals are used to block scale and water from entering the bearing, then some protection is provided, but water, steam and pollutants still invade through fit clearance between components, causing lubricant contamination
Solution Approach 1:
The support module is divided into separate sealed compartments, with each bearing housed in its own isolated chamber. This segmentation prevents contaminants from reaching the bearings and eliminates the need for centralized lubrication systems, as each compartment can be independently sealed and lubricated.
Solution Approach 2:
The patent employs simple, easily replaceable sealing elements such as seals and gaskets that can be quickly changed during maintenance. These disposable-like sealing components provide effective protection against contaminants at minimal cost and complexity, replacing the need for complex continuous lubrication systems.
2Reliability
If a centralized lubrication system is implemented to continuously supply lubricant to bearings, then lubricant replenishment is ensured, but lubricant consumption increases and waste lubricant handling becomes difficult
Solution Approach 1:
The patent extracts the lubrication system from the centralized continuous supply model and replaces it with pre-filled, sealed compartments containing lubricant for the entire service life of the support module. This eliminates the need for continuous lubricant supply and waste lubricant discharge, significantly reducing lubricant consumption and environmental impact.
Solution Approach 2:
The support module is designed to be self-lubricated through pre-filled sealed compartments that contain sufficient lubricant for the entire operational life of the module. The system serves itself without requiring external centralized lubrication systems, eliminating continuous lubricant consumption and waste handling requirements.
3Productivity
If support modules are exposed to direct thermal radiation and high temperature from the slab, then the continuous casting process can proceed, but lubricant quality degrades quickly leading to bearing failure
Solution Approach 1:
The support modules are segmented into isolated compartments that can be individually protected from thermal radiation. Each compartment acts as an independent thermal barrier, protecting the lubricant and bearing from high temperatures while allowing the continuous casting process to continue uninterrupted.
Solution Approach 2:
The patent employs simple thermal insulation barriers and heat-resistant sealing materials that protect the lubricant from thermal degradation. These inexpensive protective elements maintain lubricant stability in high-temperature environments without requiring complex cooling or temperature control systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution extends the service life of continuous casting guide rolls, reduces industrial waste, and maintains reliable lubrication in harsh environments without the need for continuous lubricant supplementation.
Implementation Method 1
a first isolator arranged between the first cover and the roll shaft. The bearing is arranged in the inner hole of the housing and lubricant which is pre-filled and enclosed in the support unit is arranged between the bearing and the first isolator
Implementation Method 2
lubricant which is pre-filled and enclosed in the support unit is arranged between the bearing and the first isolator
Data Source
AI summary
A support unit for a roll shaft of a continuous casting guide roll includes a housing having first axial end face, a second axial end face and a through-opening extending from the first axial end face to the second axial end face, a first cover connected to the first axial end face, a first primary isolator arranged radially between the first cover and the roll shaft, and a bearing in the through opening. On a first side of the bearing, a first closed space is partially defined by the bearing, the first cover and the first primary isolator, and the first closed space is pre-filled with a lubricant.