Conical Powder Sorting Chamber with Upward Rotating Gas Flow
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Solution Overview
Problem
Existing devices are limited in their ability to effectively separate and classify particles based on size, density, and shape, particularly for smaller particle sizes, and are not capable of achieving high separation degrees or specific particle size ranges.
Innovation Solution
A device with a particle sorting chamber and sedimentation classifiers that utilize an upward rotating gas flow to separate particles by density, size, and shape, allowing for the classification of particles into specific ranges, especially suitable for fine particles like fly ash, using a conical sorting chamber and multiple sedimentation classifiers to optimize separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional cyclone separators or centrifugal separators with screens are used, then particles can be separated, but the separation is limited to larger particle sizes (90 μm or larger) and cannot achieve high separation specificity for fine particles
Solution Approach 1:
The device divides the sorting chamber into multiple conical sections with progressively smaller base diameters, creating distinct separation zones for different particle size ranges. This segmentation allows simultaneous separation of particles into multiple fractions (e.g., >10μm, 5-10μm, 2-5μm, <2μm) within a single device, achieving high separation specificity for fine particles that conventional single-stage separators cannot handle
Solution Approach 2:
The invention transitions from traditional horizontal or vertical centrifugal separation to a multi-level conical configuration where particles are separated along the vertical dimension through multiple conical sections. Each cone creates a different centrifugal field intensity, enabling separation of fine particles by size in multiple dimensions simultaneously, overcoming the limitation of conventional separators that only handle one size range
2Quantity of substance
If dry sieves are used for particle separation, then separation can be achieved, but only for particles with diameter sizes of about 90 μm or larger
Solution Approach 1:
The device replaces mechanical dry sieves with a pneumatic system using upward rotating gas flow generated by a fan. This gas flow carries particles upward through the conical sections, where centrifugal force and drag force separate particles by size and density. This pneumatic approach enables separation of fine particles (including those smaller than 90 μm) that cannot be effectively separated by mechanical screens, expanding the applicable particle size range
3Manufacturing precision
If conventional separators are used, then some particle separation is achieved, but the separation degree is limited and cannot classify particles into specific size ranges with high precision
Solution Approach 1:
The device uses a rotating gas flow system where the fan creates dynamic upward airflow that carries particles through the conical sections. The rotation speed and flow rate can be adjusted to optimize separation for different particle size ranges. This dynamic system provides precise classification control without requiring complex mechanical adjustment mechanisms, achieving high manufacturing precision while maintaining reasonable structural complexity
Solution Approach 2:
The invention changes key parameters including the conical geometry (base diameter, height, angle), gas flow rate, and rotation speed to optimize separation precision. By adjusting these parameters, the device can classify particles into specific size ranges with high precision (e.g., separating particles into <2μm, 2-5μm, 5-10μm, >10μm fractions) while maintaining a relatively simple overall structure
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 device achieves a high separation specificity of 90% for particles smaller than 10 microns and sensitivity of 70%, enabling the effective classification of particles into precise size ranges, enhancing the reusability and value of separated materials by optimizing their properties for specific applications.
Implementation Method 1
means are provided for generating an upward rotating gas flow in the sorting chamber, the rotating gas flow having a rotation axis which corresponds to an upward axis of the sorting chamber
Implementation Method 2
the particle mixture is divided into three fractions: small particles pass through the holes of the drum and enter the corresponding receiving tray, medium sized particles go down the working surface of the drum
Implementation Method 3
Heavy particles and a part of fine/light particles are deposited in the settling classifier below the cyclone under gravity, following collision with the cyclone wall
Implementation Method 4
a reverse-flow type cyclone which serves as particle collector and is positioned upstream of a straight-through cyclone which serves as a particle concentrator
Data Source
AI summary
The present invention relates to a device (1) for sorting powder particles into ranges of particles according to one or more of a density, size and/or shape of the particles, wherein the device (1) comprises a particle sorting chamber (2) with at least one sloping side wall (3), which side wall (3) slopes from a lower part (4) of the sorting chamber (2) towards an upper part (5) thereof, wherein the lower part (4) of the sorting chamber (2) is larger dimensioned than the upper part (5), wherein at the upper part (5) of the particle sorting chamber (2) an inlet (6) is provided for supplying a flow of the powder particles to be sorted to the sorting chamber (2), wherein a particle outlet (7) is provided in the upper part (5) of the sorting chamber (2) for conducting sorted particles from the sorting chamber (2) through a duct (8) to at least one particle sedimentation classifier (9), wherein in the lower part (4) of the sorting chamber (2) means (11) are provided for generating an upward rotating gas flow in the sorting chamber (2), the rotating gas flow having a rotation axis which corresponds to an upward axis (10) of the sorting chamber (2).