Floating Chopper Sludge Weir for Paint Booths

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Solution Overview

Problem

Existing paint sludge removal systems face issues with foam and coagulated paint particles forming on the surface of liquids, leading to clogging of suction hoses and floating weirs, which can cause system failure due to the accumulation of paint sludge blockages.

Innovation Solution

The implementation of a floating weir system with a rotating chopping mechanism and air agitation to break up paint sludge agglomerates, preventing blockages and ensuring continuous operation by maintaining the paint sludge in a semi-solid state, and the use of induced air flotation to enhance paint sludge separation and concentration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a floating weir with suction hose is used to remove paint sludge from the surface, then paint sludge removal is achieved, but the suction hose becomes clogged with paint sludge blockages

Engineering Contradiction:
Improvepaint sludge removal efficiencyVSAvoidsuction hose operational reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent introduces a rotating chopping blade assembly that dynamically breaks up paint sludge agglomerates at the suction inlet, transforming the static suction process into an active mechanical disruption process. This prevents the formation of blockages while maintaining continuous paint sludge removal operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The chopping blades perform preliminary breakdown of paint sludge agglomerates before they enter the suction hose, preventing clogging in advance. By addressing the potential blockage issue at the source rather than after it forms in the hose, the system maintains reliable operation.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If large amounts of liquid are filtered to capture paint sludge, then paint sludge removal is achieved, but larger pumps and filters are required

Engineering Contradiction:
Improvepaint sludge capture capacityVSAvoidpump and filter system size
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent extracts paint sludge from the bulk liquid at the surface level using the floating weir, rather than filtering the entire volume of liquid. This selective extraction approach removes the need for large-capacity pumps and filters that would be required to process the full liquid volume.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system changes the operational parameter from bulk liquid filtration to surface-level sludge removal. By targeting only the paint sludge layer at the surface rather than processing the entire liquid volume, the system achieves effective sludge capture with smaller, more compact equipment.

Inventive Principle:
Principle #35Parameter changes

3Duration of action of moving object

If paint sludge accumulates on the suction hose, then blockage occurs, but continuous operation is required

Engineering Contradiction:
Improvecontinuous operation durationVSAvoidpaint sludge blockage
Core Design Contradiction:
Duration of action of moving objectVSObject-affected harmful factors

Solution Approach 1:

The rotating chopping blades continuously disrupt paint sludge accumulation at the suction inlet, preventing blockage formation during extended operation. This dynamic mechanical action ensures the system can operate continuously without shutdowns for hose clearing or maintenance.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The chopping blades apply preliminary anti-action by breaking up paint sludge before it can accumulate to blockage levels in the suction hose. This preventive mechanism counteracts the harmful accumulation effect before it interferes with continuous operation.

Inventive Principle:
Principle #9Preliminary anti-action

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 solution effectively prevents paint sludge blockages, maintains system efficiency, and allows for continuous operation by ensuring that paint sludge remains in a semi-solid state, preventing clogging and allowing for efficient recycling and disposal of paint sludge.

Implementation Method 1

a floating weir having a suction hose is used to remove paint sludge floating on the surface of the liquid

Methodology Applied
Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Implementation Method 2

the use of induced air flotation to enhance paint sludge separation and concentration

Methodology Applied
Scientific EffectAir flotation: Froth Floatation

Data Source

PatentUS10525380B2Floating chopper sludge weir
Publication Date: 2020.01.07 AIR & LIQUID SYST LLC
  • US10525380B2 patent drawing
  • US10525380B2 patent drawing
  • US10525380B2 patent drawing

AI summary

A system for consolidating and removing contaminate such as paint sludge or oils from a fluid mixture. A contaminate tank receives a supply of the fluid mixture containing contaminate from a source such as a manufacturing line where overspray of paints or cleaning solutions containing washed away oils are collected. A free floating weir floats on the surface of the contaminate tank and mechanically separates and removes contaminate from a surface of the contaminate tank and concentrates contaminate in a consolidation tank. The free floating weir is equipped with several features that enhance the ability of the free floating weir to remove contaminate without becoming clogged.