Cyclonic Dust Filter With Retaining Walls For Multi-Stage Separation
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Solution Overview
Problem
Conventional cyclonic dust filter equipment is inadequate for industrial applications as it can only perform single-stage dust filtering and fails to achieve cleaner air when the centrifugal force is insufficient or when dealing with smaller dust particles, which is not sufficient for industrial requirements.
Innovation Solution
A cyclonic dust filter device with a trunk, first and second retaining walls, and a dust filter hole, where the airflow strikes these walls to change direction multiple times, enhancing dust separation through centrifugal force and gravity, allowing for multiple stages of filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional cyclonic dust filter structures are used, then the device complexity is low, but the dust filter efficiency is insufficient for industrial applications
Solution Approach 1:
The cyclone separator is divided into multiple independent cyclone units (first cyclone, second cyclone, third cyclone) that process airflow in sequence. Each cyclone performs a stage of dust separation, with the first cyclone handling coarse particles, the second cyclone handling finer particles, and the third cyclone providing final filtration. This segmentation allows the system to achieve high dust filter efficiency through multi-stage processing while keeping each individual cyclone unit relatively simple in structure.
Solution Approach 2:
The patent implements a nested arrangement where the second cyclone is positioned within or adjacent to the first cyclone, and the third cyclone is positioned within or adjacent to the second cyclone. The airflow path is nested such that cleaned air from the first cyclone becomes the input for the second cyclone, and so on. This nesting approach maximizes the use of space and allows multiple filtration stages to be compacted into a unified structure, improving efficiency without proportionally increasing device complexity.
2Manufacturing precision
If a single ascending airflow is used for dust filtering, then the device complexity is low, but the dust filter efficiency is insufficient when centrifugal force is insufficient or particles are small
Solution Approach 1:
The single ascending airflow path is segmented into multiple sequential airflow paths, each passing through a separate cyclone unit. The first cyclone generates a first ascending airflow for coarse particle separation, the second cyclone generates a second ascending airflow for fine particle separation, and the third cyclone generates a third ascending airflow for final filtration. This segmentation of the airflow path allows each stage to be optimized for specific particle size ranges, significantly improving overall dust filter efficiency.
Solution Approach 2:
The patent maintains continuous airflow through the nested cyclone system, where the output air from one cyclone immediately becomes the input air for the next cyclone. This continuous action ensures that dust particles are progressively separated across multiple stages without interruption, maximizing the effectiveness of each cyclone unit and achieving high overall filtration efficiency through uninterrupted multi-stage processing.
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 effectively filters dust by creating multiple cyclones, ensuring cleaner air is produced by separating larger and smaller particles through repeated impacts, meeting industrial dust filter efficiency requirements.
Implementation Method 1
the airflow to-be-filtered forms a centrifugal airflow that contains a dust at a position of the dust filter hole and is discharged outside of the trunk
Implementation Method 2
a first impact zone is defined by the at least one first retaining wall for the centrifugal airflow striking to the first retaining wall and changing a direction of the centrifugal airflow
Implementation Method 3
a second impact zone is defined by the second retaining wall for the first deflecting airflow striking to the second retaining wall and changing a direction of the first deflecting airflow
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A cyclonic dust filter device (10) comprises a trunk (11), at least one first retaining wall (12), and at least one second retaining wall (13). The trunk (11) comprises a channel (111), an air inlet end (113) and an air outlet end disposed at two ends of the channel (111), and a dust filter hole (114) communicating with the channel (111). The first and second retaining walls (12, 13) are respectively disposed correspondingly to the dust filter hole (114). When a dust-containing airflow to-be-filtered (50) enters the channel (111) from the air inlet end (113), the dust-containing airflow forms a centrifugal airflow (51) that contains the dust (40) and is thrown out of the channel at a position of the dust filter hole (114). The first and second retaining walls (12, 13) are respectively disposed on a traveling path of the centrifugal airflow (51), so that the centrifugal airflow (51) sequentially strikes the first and second retaining walls (12, 13) to change the traveling direction and then discharges dust free clean air.