Paint Mist Separating Device Using Tapered Tube and Funnel
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Solution Overview
Problem
Dry paint mist separators are ineffective in removing larger paint or solvent droplets during color changes or initial pressurized infeed operations in paint booths, leading to contamination and increased maintenance due to inadequate separation.
Innovation Solution
A paint mist separating device comprising a tapered tube and a collecting funnel with a hood, where the tapered tube directs paint mist into a funnel that separates larger droplets from the gas stream, allowing paint particles to settle and be collected while the gas is deflected, reducing contamination and improving separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If dry separators are used to remove paint mist, then energy efficiency is improved and water circuit is eliminated, but separation effectiveness deteriorates for large droplets
Solution Approach 1:
The invention divides the separation task into two stages: first, a cyclone separator removes large droplets (5-50 μm) from the paint mist, and second, a dry separator with powdered binder removes remaining fine particles. This segmentation allows each separator to be optimized for its specific size range, maintaining high separation effectiveness while preserving the energy efficiency benefits of dry separation for the majority of particles.
2Device complexity
If powdered binder is used for dry separation, then device complexity is reduced, but separation area is insufficient for large particles
Solution Approach 1:
The invention employs a cyclone separator that uses centrifugal force generated by rotating air flow to separate large paint droplets from the mist. This pneumatic mechanism provides a large effective separation area without adding mechanical moving parts or complex structures, thus maintaining low device complexity while effectively handling large particles that powdered binder alone cannot capture.
3Device complexity
If paint particles are not separated effectively, then device complexity remains low, but contamination of painting installation increases
Solution Approach 1:
The invention segments the paint mist separation into two distinct stages: a cyclone separator for large droplets and a dry separator with powdered binder for fine particles. This dual-stage approach ensures comprehensive removal of paint particles across all size ranges, preventing contamination of the painting installation and air-conditioning system while keeping each individual separator relatively simple in design.
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 separates larger paint droplets from the gas stream, reducing contamination and maintaining air quality in paint booths, enhancing the energy efficiency of dry separation systems over wet systems by preventing paint particles from entering the air supply.
Implementation Method 1
a tapered tube (12), a collecting funnel (16) with a funnel inlet (58) and a funnel neck (18), into which the larger end of the tapered tube projects
Implementation Method 2
the tapered tube directs paint mist into a funnel that separates larger droplets from the gas stream
Implementation Method 3
allowing paint particles to settle and be collected while the gas is deflected
Data Source
AI summary
The disclosure relates to a paint mist separating device, and a paint booth having a paint mist separating device. The paint mist separating device can include a tapered tube, and a collecting funnel with a funnel inlet and a funnel neck, into which the larger end of the tapered tube projects, wherein the funnel neck is provided for connection to a collecting tank for paint. The paint mist separating device can include a collecting hood, which is arranged opposite the funnel inlet and which has a paint mist inlet opening, into which a smaller end of the tapered tube opens, wherein an outlet gap is provided between the inlet opening of the collecting funnel and the collecting hood.