Quick Extraction Kit Spin-Welded Cap Sealing
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Solution Overview
Problem
Existing quick extraction kits for pesticide and veterinary drug residues have poor sealing performance and a fragile structure, leading to issues with the cap falling off the column during use.
Innovation Solution
A quick extraction kit with a column and cap design featuring a spin-welded sealing joint, reinforcing ribs, and a connecting mechanism to secure the cap, ensuring durability and leak-proof construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a quick extraction kit is designed for rapid sample preparation, then productivity is improved, but reliability deteriorates due to poor sealing performance and fragile structure
Solution Approach 1:
The cap is divided into multiple functional components: a base plate for sealing, an upper tube for structural support, and reinforcing ribs for additional strength. The sealing structure is segmented into a sealing ring and a spin-welded joint between the base plate and flange, allowing each component to address specific reliability issues while maintaining overall quick extraction functionality
Solution Approach 2:
The sealing joint is formed by spin welding the base plate of the cap to the flange of the column, creating a composite sealed structure that combines the advantages of both components. This welded joint provides superior sealing performance compared to simple mechanical connections, ensuring reliability during rapid extraction operations
2Ease of manufacture
If the cap structure is simplified for ease of manufacture, then ease of manufacture is improved, but strength deteriorates making the cap fragile and prone to falling off
Solution Approach 1:
The reinforcing ribs are pre-formed on the base plate during cap manufacturing, providing structural reinforcement before the cap is assembled to the column. This preliminary strengthening prevents the cap from being fragile during use while maintaining manufacturing simplicity through integrated rib formation
Solution Approach 2:
The reinforcing ribs extend vertically from the base plate in a direction perpendicular to the sealing surface, adding a third dimension of structural support. This vertical reinforcement enhances cap strength and prevents it from falling off during extraction operations without complicating the horizontal sealing function
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 kit provides excellent sealing performance and a secure cap attachment, facilitating efficient extraction and cleanup of residues for analysis, reducing sample preparation time and enhancing usability.
Implementation Method 1
The base plate of the cap and the flange of the column together creates a sealing joint therebetween by spin welding
Data Source
AI summary
A the quick extraction kit includes a column and a cap. The column has an interior space to be filled with materials for extraction and cleanup. The column has at its top an opening and a flange, and at its bottom an lower tube. The lower tube has an outlet at its bottom. The cap has a base plate, an upper tube on the base plate, and a pair of reinforcing ribs. In particular, the base plate of the cap and the flange of the column together creates a sealing joint there between by spin welding. The upper tube of the cap is in communication with the column and has an inlet. Each of the reinforcing ribs has a bottom surface bonded with the top surface of the base plate, and an inner side surface adjacent to the bottom surface and bonded with a peripheral side surface of the upper tube.