Centrifugal Separator With Variable Divider Slopes
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Solution Overview
Problem
Existing particle separation systems by density often face inefficiencies due to suboptimal geometry and divider slopes, which can lead to incomplete separation of particles of varying densities.
Innovation Solution
The system employs a centrifugal concentrator with a rotating bowl featuring a specific configuration of dividers and retainers, where the divider slopes progressively decrease from the input end to the output end, and the retainers have consistent minimum depths, facilitating improved particle separation by density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the divider slope is increased to improve particle separation efficiency, then high-density particle capture is enhanced, but the system becomes less effective at capturing fine particles
Solution Approach 1:
The divider is segmented into multiple sections along the particle path, with each section having a different slope angle. The first section has a steeper slope for capturing coarse high-density particles, while subsequent sections have progressively gentler slopes for capturing finer particles, allowing the single divider structure to handle multiple particle size ranges effectively
Solution Approach 2:
Different sections of the divider are assigned different local geometric properties (slope angles) optimized for specific separation tasks. The varying slopes create localized separation zones that collectively achieve comprehensive particle separation across different sizes and densities
2Manufacturing precision
If the divider slope is decreased to capture fine particles, then fine particle separation is improved, but coarse particle capture efficiency decreases
Solution Approach 1:
The divider is divided into functional segments where the initial steep section efficiently captures coarse particles through gravity and centrifugal forces, while downstream gentler sections allow fine particles to settle and be captured, ensuring both coarse and fine particle recovery without compromising either
3Productivity
If the retainer depth is increased to capture more particles, then particle recovery rate is improved, but the system complexity and manufacturing difficulty increase
Solution Approach 1:
The retainers are designed with a consistent minimum depth that provides sufficient capture capacity for both coarse and fine particles. This uniform depth specification simplifies manufacturing compared to variable depth designs, while still achieving high recovery rates through the optimized divider slope configuration that directs particles to appropriate retainer zones
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 configuration enhances the separation efficiency by allowing for the capture of both coarse and fine high-density particles, resulting in higher recovery rates and more accurate particle separation.
Implementation Method 1
a separator configured to rotate about a rotation axis. In operation, particles are provided to an input end of the separator while the separator rotates about the rotation axis
Data Source
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AI summary
An apparatus for facilitating particle separation by density includes a separator having an inner surface surrounding a rotation axis and defining a particle path from an input end to an axially spaced output end. The inner surface includes a plurality of axially spaced dividers having respective inner positions, defining at least in part respective axially spaced retainers for collecting particles during rotation of the separator. The retainers each include at least one fluid inlet for fluidizing particles in the retainer during operation. The dividers include a first pair of adjacent dividers and a second pair of adjacent dividers, the first pair nearer the input end than the second pair, wherein a first divider slope of the first pair is greater than a second divider slope of the second pair and wherein each of the first and second divider slopes is zero or positive. Other systems, apparatuses and methods are disclosed.