Multi-Ring Fluid Connector Sealing Against Impurity Leakage
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Solution Overview
Problem
Conventional fluid connectors suffer from sealing failures due to impurity accumulation in the sealing ring gaps, leading to fluid leakage.
Innovation Solution
A multi-layered sealing structure comprising first, second, third, and fourth sealing rings, along with a valve core and valve rod, ensures tight sealing by maintaining continuous contact with the inner surfaces of the sleeves and rods, and utilizes jacking springs for controlled channel opening and closing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing ring is provided on a telescopic rod for sealing, then sealing function is achieved, but impurities accumulate in the gap of the sealing ring causing sealing failure and fluid leakage
Solution Approach 1:
The patent divides the sealing system into multiple independent sealing rings (first sealing ring, second sealing ring, third sealing ring, fourth sealing ring) positioned at different locations. Each sealing ring independently seals different gaps, so impurity accumulation at one location does not compromise the entire sealing system. This segmentation approach resolves the contradiction by maintaining sealing reliability even when some sealing surfaces are contaminated.
Solution Approach 2:
The patent employs a nested structure where multiple sealing rings are arranged concentrically around the telescopic rod, with each sealing ring addressing a specific gap. The first sealing ring seals the gap between the telescopic rod and first sleeve, the second sealing ring seals the gap between the telescopic rod and second sleeve, and additional sealing rings provide redundant sealing. This nested arrangement prevents impurity accumulation from causing complete sealing failure.
2Reliability
If multiple sealing rings are used to prevent impurity accumulation, then sealing performance is improved, but device complexity increases
Solution Approach 1:
The patent designs the telescopic rod to serve multiple functions: it acts as both the moving component and the mounting structure for all sealing rings. The first sleeve and second sleeve also serve dual purposes as both structural components and sealing surfaces. This multi-functionality reduces the need for additional dedicated sealing components, thereby limiting the increase in device complexity despite using multiple sealing rings.
Solution Approach 2:
The patent combines the sealing function with the existing structural components (telescopic rod, first sleeve, second sleeve) rather than adding separate sealing mechanisms. The sealing rings are integrated into the gaps between these components, merging the sealing function with the mechanical structure. This approach improves sealing performance while minimizing the increase in overall device complexity.
Data Source
AI summary
A sealing structure and a fluid connector are provided. The sealing structure for a fluid connector includes a first sealing ring and a first sleeve, where the first sleeve is arranged in the fluid connector and is hollow inside to form a first fluid channel, and the first sealing ring is arranged on an inner surface of the first sleeve for sealing and communication of the first fluid channel.