Centrifuge Drum Lid Segmentation for Pond Depth
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Solution Overview
Problem
Conventional drum covers of solid bowl screw centrifuges face challenges in achieving a large pond depth without excessive weakening due to the positioning of outlet openings radially far inward, which affects the flow of clarified medium under high centrifugal forces.
Innovation Solution
The drum cover design includes a third drum cover section positioned radially outside the weir edge, allowing for unhindered flow of clarified medium while maintaining structural support, and a fourth section radially inside to connect the first and second cover sections, creating a grid-like reinforcement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If outlet openings are positioned radially far inward to achieve large pond depth, then the pond depth is improved, but the drum cover rigidity deteriorates
Solution Approach 1:
The drum cover is divided into multiple sections (first drum cover section containing outlet openings, second drum cover section for bearing support, and at least one third drum cover section for connection). This segmentation allows the outlet openings to be positioned radially far inward for large pond depth while the separate connection sections maintain structural rigidity without interfering with the outlet flow path.
Solution Approach 2:
The connection sections are positioned in the axial direction to connect the first and second drum cover sections, rather than extending radially inward. This dimensional arrangement allows radial positioning of outlet openings for maximum pond depth while maintaining structural connectivity through axial positioning of support sections.
2Volume of moving object
If outlet openings are positioned radially far inward, then the pond depth is increased, but the flow of clarified medium deteriorates due to centrifugal forces
Solution Approach 1:
The drum cover is segmented into functional sections where the first section contains outlet openings positioned radially far inward for large pond depth, while the third connection sections are positioned to not interfere with the radial flow path of clarified medium. This segmentation allows both large pond depth and unhindered flow.
Solution Approach 2:
Different sections of the drum cover have different functional qualities: the first section is optimized for liquid discharge with outlet openings, while the third connection sections are optimized for structural support. This local differentiation allows the outlet openings to be positioned for maximum pond depth while the connection sections provide support without obstructing flow.
3Strength
If third drum cover section is positioned radially outside the weir edge, then structural support is maintained, but the flow path may be obstructed
Solution Approach 1:
The drum cover is divided into functionally separate sections: the first section with outlet openings for liquid discharge, and the third section as a connection element. This segmentation allows the third section to be positioned radially outside the weir edge for structural support while the free spaces between sections maintain unobstructed flow paths.
Solution Approach 2:
The third drum cover section acts as an intermediary connection element between the first section (outlet openings) and the second section (bearing support). It provides structural connectivity and support while being positioned to not interfere with the flow path of clarified medium through the outlet openings.
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
This design enables a large pond depth without compromising the drum cover's rigidity, ensuring efficient discharge of clarified medium and reducing energy requirements by preventing medium from hitting rotating components.
Implementation Method 1
a first drum lid section in which outlet openings are located, at which a clarified medium can flow from inside the drum over a weir edge to outside the drum
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
A drum lid (30) of a drum of a solid-bowl screw centrifuge rotatable about a centrifuge axis (18) is configured with a first drum lid section (32) in which at least one outlet opening is located, through which a clarified medium can flow from inside the drum over a weir edge (40) to outside the drum, as well as a second drum lid section (34) which, viewed axially, is located outside the first drum lid section and which is designed to rotatably support the drum, and at least a third drum lid section (82) via which the first drum lid section (32) is statically connected to the second drum lid section (34). According to the invention, the at least one third drum lid section (82) is located radially outside with respect to the weir edge (40) when viewed radially.