Perforated Transverse Disc for Centrifuge Screw Hub Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing solid-jacket screw centrifuges face limitations in achieving a large pond depth due to the diameter of the screw hub, which affects the stability and sedimentation of the mixture, and existing solutions for stabilizing the screw hub impair the flow of liquid.
Innovation Solution
A transverse disk with at least 75% of its circular lines featuring openings, allowing for liquid flow while maintaining stability, is designed to stabilize the screw hub structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the screw hub diameter is reduced to increase pond depth, then the clarification performance is improved, but the stiffness and stability of the centrifuge screw deteriorate
Solution Approach 1:
The screw hub is segmented into a lattice structure composed of multiple longitudinal rods arranged in a grid pattern, replacing the traditional solid hub. This segmentation reduces material usage and weight while maintaining structural stability through the distributed framework of rods, allowing for reduced hub diameter without compromising strength.
Solution Approach 2:
The screw hub employs a porous lattice construction with intentional voids between the longitudinal rods. This porous structure reduces the effective diameter of the hub while maintaining sufficient mechanical strength through the distributed rod framework, enabling increased pond depth without sacrificing structural integrity.
2Stability of the object's composition
If transverse discs are designed with stabilizing structures for the screw hub, then the stability is improved, but the liquid flow is impeded
Solution Approach 1:
The transverse discs are designed with a porous lattice structure composed of longitudinal rods, creating numerous small openings throughout the disc. This porous construction allows liquid to flow through the disc while the three-dimensional rod framework provides sufficient structural support to stabilize the screw hub, resolving the contradiction between stability and flow.
Solution Approach 2:
The transverse disc is segmented into a framework of longitudinal rods with gaps between them, rather than being a solid barrier. This segmentation allows liquid to pass through multiple pathways while the distributed rod structure maintains the disc's structural integrity and stabilizing function.
3Length of stationary object
If the screw hub diameter is reduced, then the pond depth is increased, but the buoyancy and sedimentation effects are compromised
Solution Approach 1:
The screw hub is divided into a lattice of longitudinal rods that extend along the length of the hub, providing distributed structural support. This segmentation allows the hub to maintain sufficient diameter for reliable buoyancy and sedimentation effects while still enabling increased pond depth through the efficient use of structural material.
Solution Approach 2:
The screw hub utilizes a composite lattice structure combining multiple longitudinal rods arranged in a grid pattern, creating a framework that optimizes the balance between structural requirements (for reliable separation effects) and dimensional requirements (for increased pond depth).
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 transverse disk enables unhindered liquid flow and maintains screw hub stability, preventing solid material accumulation, and allows for axial passage of centrate at any pond depth without compromising the centrifuge's stability.
Implementation Method 1
The drum is rotated at high speed, allowing a multiphase mixture inside to be separated into at least a heavy phase and a light phase
Implementation Method 2
The screw is mounted so that it can rotate within the drum and has a helix. The screw helix travels along the inner surface of the drum, conveying the heavier phase material to an axial end of the drum
Implementation Method 3
at least 75% of all circular lines of the transverse disk extending from the center to the circumference have at least one opening, at least partially
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a transverse disc (60) of a centrifuge screw (30) for stabilising a screw hub structure. According to the invention, at least one opening (70) is formed at least in some sections on at least 75% of all the imaginary circle lines (71) of the transverse disc (60) between the centre point (M) and the transverse disc circumference (72).