Sampling System Pivoting Plug Eliminates Ventilation Lines
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Solution Overview
Problem
Existing sampling systems for toxic and environmentally harmful fluids are complex in design due to the need for additional connection pieces and ventilation lines, which complicates contamination-free sampling.
Innovation Solution
A sampling system with a plug that pivots between two positions, where in the second position, both the sampling and venting needles are directly connected to a single connector, eliminating the need for an additional connector and ventilation line, allowing for contamination-free removal without additional components or routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an additional connection piece and ventilation line are provided for contamination-free sampling, then sampling reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines the sampling needle and venting needle into a single third connection piece, eliminating the need for separate ventilation lines and additional connection pieces. This merging maintains contamination-free sampling functionality while significantly simplifying the overall device structure.
Solution Approach 2:
The third connection piece serves multiple functions: it acts as both the sampling needle connection point and the venting needle connection point. This multi-functionality eliminates the need for dedicated separate components for ventilation, reducing device complexity while maintaining sampling reliability.
2Reliability
If a ventilation line is routed around the sampling system, then sampling reliability is improved, but device complexity and installation difficulty increase
Solution Approach 1:
By integrating both the sampling and venting functions into the third connection piece, the patent eliminates the need to route ventilation lines around the sampling system. This direct integration greatly simplifies installation and manufacturing while maintaining the reliability of contamination-free sampling.
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 design simplifies the sampling process by eliminating the need for extra connections and ventilation lines, ensuring contamination-free and pressureless sampling with a defined sample volume, while maintaining environmental safety.
Implementation Method 1
a plug, which has a base body with a longitudinal axis, about which the plug can be pivoted between a first and a second end position
Implementation Method 2
a sampling needle which has a second end through a membrane of a sampling volume can be pricked
Implementation Method 3
in the second end position the sampling recess is connected via the third connector to a first end of a venting needle
Data Source
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AI summary
The invention relates to a sampling system (10) which has a first connecting piece (14) for connecting to a pipe traversed by fluid and a third connecting piece (20), and having a cock (24) which has a basic body (26) with a longitudinal axis (1), about which the cock (24) can be pivoted between a first end position and a second end position, and with a sampling recess (28), wherein in the first end position, the sampling recess (28) can be connected via the first connecting piece (14) to the pipe traversed by media, and in the second end position, the sampling recess (28) can be connected to the third connecting piece (20), wherein the third connecting piece (20) is connected to a first end (40a) of an extraction needle (40) which can be pierced with a second end (40b) through a membrane (48) of a sampling volume (44), wherein in the second end position, the sampling recess (28) is connected via the third connecting piece (20) to a first end (42a) of a ventilation needle (42).