Pipe Unblocker with Color-Changing Acid Indicator
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional pipe unblockers lack a visual indicator to easily determine the concentration and temperature of the solution, particularly in the pH range of 0-1, which is crucial for effective cleaning and stripping applications, and do not provide a reliable rinsing check for corrosive products.
Innovation Solution
A pipe unblocker formulation incorporating a strong acid, such as sulfuric acid, combined with a colored indicator that changes color based on acid concentration and polarity, allowing visual verification of dilution and serving as a rinsing check by disappearing at neutral pH, along with a surfactant to adjust color transitions and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a strong acid is used in high concentration for effective pipe unblocking, then the cleaning efficiency is improved, but the temperature control and safety become more difficult
Solution Approach 1:
The patent applies color change indicators that shift color based on acid concentration and solution polarity. Different colors indicate different concentration ranges, allowing users to visually determine the appropriate dilution level and temperature conditions, thereby maintaining cleaning efficiency while ensuring safety through visual feedback.
Solution Approach 2:
The patent implements visual feedback through color-changing indicators that provide real-time information about acid concentration and polarity. This feedback mechanism allows users to adjust dilution and application conditions to maintain optimal cleaning performance while avoiding unsafe temperature and concentration levels.
2Measurement precision
If a classical pH indicator is used, then the color change is predictable, but it cannot provide accurate indication in the pH range of 0-1 which is needed for strong acid applications
Solution Approach 1:
The patent uses indicators whose color change behavior is influenced by both pH and polarity parameters. By selecting indicators with appropriate pKa values (3-4) and considering their response to polarity changes in strong acid environments, the system achieves accurate visual indication in the pH 0-1 range where classical indicators fail.
Solution Approach 2:
The patent combines multiple indicators with different pKa values (e.g., bromothymol blue with pKa 7.1 and methyl red with pKa 5.1) to create a composite indicator system that provides comprehensive color changes across the strong acid pH range, enabling accurate concentration determination that neither indicator could achieve alone.
3Device complexity
If no visual indicator is added to the pipe unblocker, then the formulation is simpler, but the user cannot easily determine the concentration and temperature of the solution
Solution Approach 1:
The patent incorporates color-changing indicators that provide visual information about acid concentration and solution polarity. The indicators change color progressively as concentration changes, allowing users to easily determine the appropriate dilution level and temperature conditions without complex measurement equipment, thus maintaining formulation simplicity while preventing information loss.
4Ease of operation
If a colored indicator is added to indicate acid concentration, then the dilution can be visually checked, but the indicator must remain stable in highly acidic conditions
Solution Approach 1:
The patent introduces surfactants as intermediary substances that stabilize the colored indicators in highly acidic environments. The surfactants form protective complexes with the indicators, preventing their degradation in strong acid conditions while maintaining their color-changing properties, thus enabling visual dilution checks without sacrificing indicator stability.
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
Enables easy visualization of the dilution process and ensures proper removal of blockages by adapting the acid concentration and temperature, ensuring safe and effective use with corrosive products.
Implementation Method 1
a colored indicator capable of assuming different colors, depending on the acid concentration and on the polarity of the pipe unblocker solution, the changes of color being observed in the range of pH 0-1
Implementation Method 2
at least one strong acid in an amount of at least 80%, preferably at least 90%, and still preferably at least 95% by weight... the concentration and therefore the temperature of a solution obtained by dilution of the unblocker in water
Data Source
AI summary
The present invention relates to a liquid pipe unblocker comprising at least one strong acid, and a colored indicator capable of assuming different colors, depending on the acid concentration and on the polarity of the pipe unblocker solution.