Movable Barrier Tube Plug for Liquid Extraction
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Solution Overview
Problem
Current liquid collection devices for test tubes face issues with leakproofness, stability, contamination, and control over liquid levels during injection, requiring multiple operators and leading to redundant steps and potential overflow when testing or removing the injecting device.
Innovation Solution
A combined structure of a liquid collector with a test tube assembly, featuring a tube plug with movable barriers and a liquid collector design that includes a first passage for sealing and guiding, preventing liquid leakage and overflow by controlling the liquid level and ensuring stable connection during injection and testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid connection is used between the injecting device and the test tube, then the connection stability is improved, but the leakproofness deteriorates
Solution Approach 1:
The tube plug incorporates movable barriers that can dynamically adjust their position. When the liquid collector is inserted, the barriers are pushed inward to create a sealed passage. When the liquid collector is removed, the barriers return to their original position to block the passage. This dynamic mechanism simultaneously ensures leakproofness during injection and prevents contamination during removal.
2Ease of operation
If the tube plug is removed to examine the liquid in the test tube, then the examination is facilitated, but redundant operation steps are increased
Solution Approach 1:
The movable barriers in the tube plug automatically open when the liquid collector is inserted and automatically close when it is removed. This self-service mechanism eliminates the need for manual removal of the tube plug for examination purposes, reducing operation steps and time loss while maintaining ease of operation.
3Productivity
If the injecting device is withdrawn from the test tube after injection, then the injection process is completed, but liquid contamination outside the test tube occurs
Solution Approach 1:
The movable barriers in the tube plug perform preliminary anti-action by automatically closing the passage before the injecting device is fully withdrawn. This prevents liquid from being carried out by the injecting device and contaminating the outside environment, while still allowing the injection process to be completed efficiently.
4Reliability
If the liquid collector is designed with a first passage for sealing connection, then the leakproofness is improved, but the device complexity is increased
Solution Approach 1:
The first passage in the tube plug serves multiple functions: it provides a sealed connection between the liquid collector and the test tube during injection, guides the liquid flow, and allows automatic opening/closing of the barriers. This multi-functionality reduces the need for additional separate components, thereby improving leakproofness without significantly increasing device complexity.
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 solution provides a stable and leakproof connection, allows precise control of liquid levels, prevents contamination, and facilitates easy testing without overflowing, enhancing operational efficiency and reducing the need for redundant steps.
Implementation Method 1
the movable part is deflectable relative to the fixed part
Data Source
AI summary
Disclosed is a mating structure of a liquid extraction piece and a test tube assembly, which comprises the liquid extraction piece (1) and the test tube assembly (4). A test tube plug (2) is arranged at an opening end (32) of a test tube (3). The lower portion of the liquid extraction piece (1) is mated with the test tube assembly (4). The body of the test tube plug (2) is provided with a blocking body (25). The blocking body (25) is provided with a movable portion (253) and a fixed portion (252). The movable portion (253) can move with respect to the fixed portion (252). An axial recess is arranged above an upper surface (251) of the movable portion (253). The lower portion of the liquid extraction piece (1) is mated with the recess. The blocking body (25) is located in a lumen (31) of the test tube (3).