Vacuum Water Extraction Device with Cold Trap
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Solution Overview
Problem
Current methods for extracting plant and soil water are inefficient, hazardous, and lack automation, often requiring toxic solvents and manual operation, leading to environmental pollution and low sample collection efficiency.
Innovation Solution
A full-automatic, ultra-low pressure, fractionation-free device for water extraction, comprising a control box, ultra-low temperature cold trap, and transmission device, which uses vacuum distillation and refrigeration to extract water without organic solvents or liquid nitrogen, allowing for simultaneous and non-destructive collection of multiple samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional extraction methods using organic solvents are employed, then water extraction can be achieved, but environmental pollution and health hazards increase
Solution Approach 1:
The patent changes the extraction parameters from traditional atmospheric pressure and organic solvent conditions to ultra-low pressure (vacuum) conditions without organic solvents. The vacuum pump creates a pressure environment below 100Pa, enabling water extraction through phase change alone, thus eliminating harmful organic solvents while maintaining extraction efficiency
Solution Approach 2:
The patent utilizes phase transitions of water (liquid-vapor-liquid) under vacuum conditions. Water in the sample evaporates under ultra-low pressure and is then condensed in the cold trap, achieving separation without organic solvents. This phase transition mechanism replaces the traditional solvent extraction process
2Productivity
If liquid nitrogen cooling mode is adopted, then water extraction can be achieved, but operation complexity increases and automation degree decreases
Solution Approach 1:
The system achieves automatic operation through integrated control. The microprocessor controls the vacuum pump, heating elements, and cold trap automatically based on preset parameters. The process runs autonomously without manual intervention for liquid nitrogen addition, making the system self-servicing and highly automated
Solution Approach 2:
The patent replaces the manual mechanical operation of adding liquid nitrogen with an automated thermal control system. The microprocessor-controlled heating and cooling system automatically maintains the required temperature gradients, substituting manual mechanical operations with automated electronic control
3Device complexity
If simple assembly methods are used for extraction equipment, then device complexity is reduced, but reliability and safety decrease
Solution Approach 1:
The patent divides the extraction system into distinct functional modules: vacuum system, heating system, cooling system, and control system. Each module is independently designed and connected through standardized interfaces, making the overall system modular while maintaining high reliability through proper segmentation of functions
Solution Approach 2:
The patent integrates multiple functions into a unified system with centralized control. The vacuum pump, heating elements, cold trap, and sensors are merged into a coordinated system controlled by a single microprocessor, achieving both simplicity through integration and reliability through coordinated operation
4Device complexity
If manual operation is used for water extraction, then device complexity is reduced, but productivity and efficiency decrease
Solution Approach 1:
The system incorporates sensors that continuously monitor pressure, temperature, and extraction progress, providing feedback to the microprocessor. This automated feedback control enables the system to adjust parameters in real-time and operate autonomously, dramatically increasing productivity while maintaining controlled complexity through intelligent automation
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 device enables high-efficiency, automated, and safe extraction of water, preventing isotope fractionation and reducing environmental pollution, with optimized temperature and pressure control for various sample types, ensuring reliable and compact operation.
Implementation Method 1
full-automatic, ultra-low pressure, fractionation-free and non-destructive extraction of water
Implementation Method 2
ultra-low temperature cold trap
Implementation Method 3
fractionation-free and non-destructive extraction of water
Data Source
AI summary
The invention provides a device for full-automatic, ultra-low pressure, fractionation-free and non-destructive extraction of water, including a control box, an extraction part, an ultra-low temperature cold trap and a transmission device, wherein the control box and the extraction part are located at the top of a cabinet, the ultra-low temperature cold trap is located inside the cabinet, a touch screen is arranged on the control box, a temperature control meter is arranged on a side face of the control box, the extraction part includes an upper layer plate, a middle layer plate, a bottom plate and a test tube, the bottom plate is fixedly installed on the cabinet, the test tube is accommodated in the ultra-low temperature cold trap, and the transmission device is fixedly installed on the bottom plate. The invention has the beneficial effects of being able to extract a plurality of samples at the same time, so the extraction efficiency is high; and no liquid nitrogen or organic solvent is required, thereby reducing the environmental pollution.