Paint Circuit Cleaning via Effluent Recycling
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Solution Overview
Problem
Existing methods for cleaning and treating spraying circuits, such as those used for paint, require periodic water consumption from the network, and there is a need for a method that recycles treated effluents to reduce water usage and guides operators for safe and efficient operation.
Innovation Solution
A method and installation that involves recycling treated effluents to clean and rinse paint circuits through a series of rinsing steps using predetermined volumes of treated effluent and ecosolvents, guided by a programmable logic controller to optimize water usage and minimize risks and contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If water from the network is used for rinsing the spraying circuit, then the cleaning effectiveness is ensured, but the water consumption increases
Solution Approach 1:
The patent recovers treated effluent from the effluent treatment station and reuses it for rinsing the spraying circuit, transforming waste effluent into a useful cleaning resource. This closed-loop approach reduces fresh water consumption while maintaining cleaning effectiveness through multiple rinsing steps with predetermined volumes.
Solution Approach 2:
The system uses its own treated effluent to perform the rinsing function, making the system self-sufficient for its cleaning needs. The effluent treatment station processes the waste and feeds it back to the rinsing operation, eliminating dependence on external water network supplies.
2Reliability
If manual operation is used for cleaning and treating paint circuits, then operational flexibility is maintained, but operational risks and contamination risks increase
Solution Approach 1:
The programmable logic controller receives feedback from sensors monitoring the rinsing process, effluent volumes, and treatment station status. This feedback enables automatic adjustment of rinsing parameters and volumes, ensuring optimal cleaning while preventing operator errors and environmental contamination.
Solution Approach 2:
The patent replaces manual mechanical operation with an automated control system that uses electronic sensors, programmable logic controllers, and automated valve actuation. This substitution eliminates human exposure to hazardous paint materials while maintaining precise control over the cleaning process.
3Manufacturing precision
If multiple rinsing steps with different substances are used, then cleaning quality is improved, but process complexity increases
Solution Approach 1:
The rinsing process is divided into distinct sequential steps: first rinsing with treated effluent, second rinsing with ecosolvent, and third rinsing with treated effluent. Each step uses a predetermined volume and targets specific cleaning objectives, with the programmable logic controller managing the sequence to simplify operator interaction despite the multi-step process.
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 approach significantly reduces water consumption from the network by recycling treated effluents and provides a semiautomatic, safe, and efficient process for cleaning and treating paint circuits, minimizing environmental impact and operational risks.
Implementation Method 1
the effluents to be treated are discharged to a storage tank for treatment comprising agitation by compressed air to homogenize the coagulation and the flocculation of the liquid elements and form a solid holding phase
Implementation Method 2
the effluents to be treated are discharged to a storage tank for treatment comprising agitation by compressed air to homogenize the coagulation and the flocculation of the liquid elements and form a solid holding phase
Implementation Method 3
the content of the storage tank for treatment is transferred into a filtering bag holding the solid phase and restoring a decontaminated liquid phase
Data Source
AI summary
A method for cleaning a spraying circuit, in particular of paint, and for treating the chemical effluents generated includes a first rinsing of the paint circuit using a predetermined first volume of treated effluent, a second rinsing of the paint circuit using a predetermined second volume of ecosolvent and a third rinsing of the paint circuit using a predetermined third volume of treated effluent, so as to save on the consumption of water from the network by recycling the treated effluent to clean and rinse the paint circuit.