Solution Mixer with Valved Segmentation for Precise Volume Control
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Solution Overview
Problem
Existing micro-total analysis systems (μ-TAS) face challenges in accurately and quantitatively determining the volume of solutions to be mixed in rotary mixers, leading to potential inaccuracies in mixing processes.
Innovation Solution
A solution mixer with a main flow path and connected introduction and discharge flow paths, equipped with valves that allow for quantitative compartmentalization and controlled flow, enabling precise volume determination and mixing by opening and closing valves to isolate and combine flow paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solutions are injected into a loop-like flow path to fill it completely without air mixing, then the flow path is fully utilized for mixing, but a larger amount of solution than the flow path volume is required, compromising quantitative determination accuracy
Solution Approach 1:
The flow path is divided into multiple discrete segments using valves (first valve, second valve, third valve) that can independently control different sections. This segmentation allows precise control over which portions of the flow path are active for mixing versus which portions are isolated or being filled, enabling accurate volumetric measurement without requiring excessive solution volume.
Solution Approach 2:
The system pre-fills the flow path with solutions in specific segments before initiating mixing operations. By using valves to pre-position solutions in designated flow path sections and to pre-evacuate air from specific segments, the system ensures that when mixing begins, the flow path is already optimally prepared with correct volumes, eliminating the need to inject excess solution to compensate for air mixing issues.
2Measurement precision
If multiple valves are used to quantitatively compartmentalize the flow path, then volume determination accuracy is improved, but device complexity increases
Solution Approach 1:
The valves in the system serve multiple functions: the first valve controls solution injection, the second valve manages flow path segmentation, and the third valve handles air evacuation. Each valve is designed to perform its specific control function while contributing to the overall quantitative compartmentalization system, reducing the need for additional specialized components and thereby managing complexity while maintaining measurement precision.
Data Source
AI summary
A solution mixer comprising: a main flow path in which a solution circulates; at least one solution introduction flow path connected to the main flow path; and at least one solution discharge flow path connected to the main flow path, wherein the solution discharge flow path has at least one solution discharge flow path valve, and wherein the main flow path has at least one main flow path valve.