Snap-on Flow Valve Assembly with Internal Body
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Solution Overview
Problem
Existing on-off liquid flow valves face challenges in assembly due to their complex structure and small size, particularly with snap-on coupling systems, which can make it difficult to correctly position additional components between the cover and valve body, increasing assembly complexity and time.
Innovation Solution
An on-off liquid flow valve design featuring a snap-on coupling system with an internal body and auxiliary duct, including an annular groove and hole, allows for sliding connection along an axis, ensuring flow regardless of indexation and simplifying assembly by eliminating the need for precise orientation of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a snap-on coupling system is used to connect the cover and valve body, then assembly speed is improved, but positioning precision of additional components deteriorates
Solution Approach 1:
The internal body acts as an intermediary component between the valve body and cover, providing a stable mounting platform for additional components. This mediator ensures precise positioning while maintaining the quick assembly benefits of the snap-on coupling system, as the internal body can be pre-positioned with accurate features before final assembly.
Solution Approach 2:
The internal body is pre-assembled with additional components (such as the auxiliary duct, control device, and shutter assembly) before being installed in the final valve assembly. This preliminary action ensures that all additional components are correctly positioned and secured, eliminating positioning issues during final snap-on assembly of the cover and valve body.
2Volume of moving object
If the valve size is reduced to meet market demands, then compactness is improved, but assembly complexity increases
Solution Approach 1:
Multiple functions are merged into the internal body, which serves as both a structural support element and a mounting platform for the auxiliary duct, control device, and shutter assembly. This consolidation reduces the number of separate components that need to be handled during assembly, thereby reducing assembly complexity despite the compact size and multiple functional requirements.
3Adaptability or versatility
If additional components are added between the cover and valve body, then functionality is improved, but assembly difficulty increases
Solution Approach 1:
The valve assembly is segmented into distinct functional modules: the valve body, the internal body (containing auxiliary components), and the cover. This segmentation allows each module to be assembled and tested independently, then quickly combined through the snap-on coupling system, reducing overall assembly difficulty while maintaining enhanced functionality.
Data Source
AI summary
An on-off flow valve extends along an axis and has a valve body through which a supply duct and a delivery duct pass; a main shutter assembly; and a cover fitted to the valve body by means of a snap-on coupling system.


