Paint Recycling System Mass-Based Additive Dosing
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Solution Overview
Problem
Current paint recycling systems face inefficiencies, with approximately 40% of paint wasted and significant contamination, due to inaccurate dosing of additives based on volume rather than mass, leading to incorrect paint composition and waste production.
Innovation Solution
A paint recycling system that uses a controller to determine the mass of paint and calculate the required amount of additives, incorporating a screw pump to move paint to a container for mass determination and a dosing unit with pumps to add additives based on mass, ensuring accurate dosing and mixing for reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If volume-based dosing is used to add additives to recovered paint, then the dosing process is simple, but the paint composition becomes inaccurate and quality deteriorates
Solution Approach 1:
The patent replaces volume-based dosing (mechanical measurement) with mass-based dosing using a weighing system. The container with recovered paint is weighed, and the controller calculates the required additive amount based on the measured mass, ensuring accurate paint composition while maintaining operational simplicity through automated control.
Solution Approach 2:
The system implements feedback control by continuously measuring the mass of recovered paint, comparing it to target values, and automatically adjusting the additive dosing accordingly. The controller receives mass data from the weighing system and sends control signals to the dosing pump to maintain precise paint composition.
2Manufacturing precision
If mass-based dosing is implemented to ensure accurate paint composition, then manufacturing precision improves, but device complexity increases
Solution Approach 1:
The container serves multiple functions: it stores recovered paint, acts as a weighing platform for mass determination, and receives additive dosing. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving mass-based dosing precision.
Solution Approach 2:
The patent combines the weighing system, controller, and dosing system into an integrated unit. The container is part of the weighing mechanism, and the dosing pump is controlled by the same controller that processes mass data, merging multiple functions into a cohesive system that minimizes complexity.
3Productivity
If paint is recovered and reused without accurate additive dosing, then productivity is maintained, but paint quality consistency deteriorates
Solution Approach 1:
The system performs preliminary mass measurement and additive dosing before the recovered paint is reused in the spray process. By determining the exact mass of recovered paint and adding the precise amount of additives in advance, the system ensures paint quality consistency is maintained while enabling continuous high-speed production.
4Ease of operation
If volume measurement is used for paint dosing, then measurement simplicity is maintained, but dosing accuracy deteriorates
Solution Approach 1:
The patent replaces volume measurement with mass measurement using a weighing system. The controller automatically calculates the required additive amount based on the measured mass, providing high dosing accuracy while maintaining measurement simplicity through automated control and eliminating the need for manual volume measurements.
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 system achieves improved paint recycling efficiency by accurately determining additive amounts based on paint mass, reducing waste and ensuring consistent paint quality for reuse, thereby minimizing environmental impact and operational inefficiencies.
Implementation Method 1
a first pump configured to move a volume of paint to a first container
Implementation Method 2
a dosing unit with pumps to add additives based on mass
Implementation Method 3
The second container may comprise a mixer for mixing paint and additives in the second container
Data Source
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AI summary
There is provided a system (400) for paint recycling. The system (400) comprises a first pump (200) configured to move a volume of paint to a container (210). The container (210) is configured for determining the mass of the volume of paint. The system (400) comprises a controller (330). The controller (330) is configured to determine an amount of additives to include in the volume of paint based on the volume and determined mass of the paint.