Coating Mist Collection Apparatus with Uniform Powder Dispersion
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Solution Overview
Problem
Conventional coating mist collection apparatuses face issues with powder unbalance and irregularity in the dispersed state, leading to instability in powder spraying and coating layer formation, along with increased energy consumption due to excessive powder supply.
Innovation Solution
A coating mist collection apparatus with a powder dispersion means to achieve uniform powder concentration in a sealed tank, using a spray air conveying means to supply the powder in a uniform floating dispersed state to the nozzle, ensuring stable and uniform powder spraying and reducing the need for excessive powder supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If powder is sprayed into processing target air to form a coating mist trapping filter covering layer on the filter surface, then coating mist collection is improved, but powder unbalance and irregularity in dispersed state occur leading to instability in powder spraying
Solution Approach 1:
The patent changes the physical state parameters of powder by introducing a fluidizing agent and controlling fluidization conditions (temperature, pressure, airflow rate) to achieve uniform dispersed state. This transforms powder from aggregated to uniformly distributed particles in the gas stream, resolving the stability issue while maintaining collection effectiveness.
Solution Approach 2:
The patent introduces a fluidizing agent as an intermediary substance that mediates between the powder particles and the carrier air. This intermediary prevents direct adhesion of coating mist to the filter surface and ensures uniform powder distribution in the dispersed state, solving both the collection and stability problems simultaneously.
2Reliability
If excessive powder is supplied to ensure stable spraying, then powder spraying stability is improved, but energy consumption increases
Solution Approach 1:
The patent optimizes the concentration parameter of powder in the carrier air by controlling fluidization conditions. This allows achieving stable spraying with reduced powder amounts, as the uniform dispersed state prevents aggregation and ensures consistent powder delivery, thereby reducing energy consumption while maintaining spraying stability.
Solution Approach 2:
The patent implements a feedback mechanism where the fluidization state and powder concentration are continuously monitored and adjusted. This feedback control ensures that the minimum necessary powder amount is supplied to maintain stable spraying, preventing excessive powder supply and associated energy waste while ensuring consistent coating mist collection performance.
3Ease of operation
If powder containing coating mist is kept in dissolved or fluidized state using pneumatic system, then powder handling is improved, but unbalance and irregularity occur in dispersed state causing spraying faults
Solution Approach 1:
The patent precisely controls the fluidization parameters (airflow rate, temperature, pressure) to maintain powder in an optimal fluidized state. This controlled fluidization prevents unbalance and irregularity in dispersed state, ensuring uniform powder distribution that leads to stable spraying while maintaining ease of powder handling through the pneumatic system.
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 uniformity of the powder concentration in the carrier air, stabilizes powder spraying, prevents direct adhesion of coating mist to the filter surface, and reduces energy consumption by optimizing powder usage.
Implementation Method 1
a powder dispersion means for dispersing powder stored in a sealed powder tank in a uniform floating dispersed state
Implementation Method 2
a spray air conveying means for supplying the powder in the floating dispersed state in the powder tank along with carrier air to the powder nozzle
Implementation Method 3
a filter that collects coating mist contained in processing target air discharged from a coating chamber
Data Source
AI summary
Powder is sprayed uniformly and favorably from a powder nozzle into processing target air. In a coating mist collection apparatus, coating mist in processing target gas is collected by filters in a state in which a coating mist trapping filter covering layer made up of an accumulated layer of powder is formed on the surface of the filters. The coating mist collection apparatus is provided with a powder dispersion means that obtains a uniform powder concentration in the air in sealed powder tanks by dispersing the powder stored in the tanks in a uniform floating dispersed state, and is provided with a spray air conveying means that supplies the powder in the floating dispersed state in the powder tanks along with carrier air to powder nozzles through powder supply passages.