Rotating Nozzle Head Layout for Uniform Rolling Stock Descaling
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Solution Overview
Problem
Existing descaling methods for rolling stock result in non-uniform descaling due to overlapping spray patterns from rotating nozzle heads, leading to unwanted marks and inefficiencies in liquid usage.
Innovation Solution
A nozzle head design with nozzles positioned at different radial distances from the axis of rotation, allowing for a more uniform spray pattern and efficient descaling, which can be achieved with a smaller amount of liquid at lower pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If nozzles are positioned at the same radial distance from the axis of rotation, then the nozzle head structure is simple and easy to manufacture, but the spray pattern becomes non-uniform with overlapping strips causing descaling marks
Solution Approach 1:
The patent applies local quality by positioning nozzles at different radial distances from the axis of rotation based on their specific functional requirements. Nozzles in different locations have different spray patterns and coverage areas, so they are strategically placed at varying radii to optimize the overall spray distribution uniformity while avoiding overlapping strips that cause descaling marks.
2Reliability
If high pressure and large amount of liquid are used, then descaling effectiveness is improved, but liquid consumption and energy usage increase
Solution Approach 1:
The patent applies parameter changes by optimizing the radial positioning parameters of multiple nozzles to achieve uniform spray distribution. This geometric optimization allows the system to maintain effective descaling performance while using reduced liquid flow rates and lower pressures, as the uniformly distributed spray patterns eliminate waste from overlapping coverage areas.
3Manufacturing precision
If nozzles are positioned at different radial distances, then spray pattern uniformity is improved, but the nozzle head design becomes more complex
Solution Approach 1:
The patent applies local quality by positioning nozzles at different radial distances from the axis of rotation based on their specific functional requirements. Nozzles in different locations have different spray patterns and coverage areas, so they are strategically placed at varying radii to optimize the overall spray distribution uniformity while avoiding overlapping strips that cause descaling marks.
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 provides a more homogeneous descaling result, avoiding unwanted marks and reducing liquid and energy consumption, while being applicable to various materials and shapes, including hot and cold steel and non-ferrous metals.
Implementation Method 1
spraying it with high pressure water from rotating nozzles
Implementation Method 2
Each of the nozzles of the nozzle head sprays liquid, such as water under high pressure on the rolling stock, thereby removing scale
Data Source
AI summary
A nozzle head for descaling rolling stock, said rolling stock moving relative to said nozzle head, is adapted to be mounted for rotation about an axis of rotation relative to a surface of said rolling stock. Said nozzle head comprises a plurality of nozzles adapted to spray a liquid on said rolling stock, wherein said nozzles are positioned at different radial distances from said axis of rotation.