Non-return Valve Guide Mandrel Integration
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Solution Overview
Problem
Existing non-return valves for fluid applications, particularly in vehicle contexts, are costly to produce in mass quantities due to complex component arrangements and separate parts for the opening edge and stop element.
Innovation Solution
A simplified design featuring a guide mandrel and axially adjustable valve member with retaining webs integrated into the housing, allowing for a compact and inexpensive structure with improved sealing and reduced assembly costs, where the guide sleeve extends centrally through the retaining webs in both open and closed positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate components for opening edge and stop element are used, then the valve can be adjusted axially between closed and open positions, but the structure becomes complex and manufacturing costs increase
Solution Approach 1:
The opening edge and stop element are integrated into a single component (the guide mandrel) rather than being separate parts. The guide mandrel combines the function of guiding the valve member axially while providing both the opening edge for closing the passage and the stop element for defining the open position, thereby simplifying the overall structure and reducing the number of components.
2Reliability
If separate components for opening edge and stop element are built into the housing, then the valve functions correctly, but manufacturing and assembly costs increase
Solution Approach 1:
The guide mandrel is designed as a single integrated component that combines multiple functions: guiding the valve member, providing the opening edge, and providing the stop element. This merging of functions into one component simplifies manufacturing and assembly processes while maintaining reliable valve operation.
Solution Approach 2:
The guide mandrel serves multiple purposes simultaneously: it acts as a guide for axial movement, provides the opening edge for sealing, and provides the stop element for positioning. This multi-functionality reduces the total number of components needed and simplifies the overall valve structure.
3Length of moving object
If the guide sleeve extends centrally through the retaining webs, then the valve becomes compact in the axial direction, but the structural arrangement becomes more constrained
Solution Approach 1:
The guide sleeve is positioned to extend centrally through the retaining webs, with the control plate nested between the retaining webs. This nested arrangement allows the valve components to be compactly arranged in the axial direction while maintaining proper structural support and functionality.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The non-return valve (5) has a housing (9) comprising a fluid flow passage (10) in which a guide pin (13) is extended. Several retaining bars (19) are arranged axially in a passage opening (18) of fluid flow passage. A valve structure (15) is provided with a guide sleeve (16) that is guided on guide pin. The valve structure is axially adjustable between closed and open positions. A control plate (17) of valve structure is arranged at opening edge (20) so as to axially close passage opening during closed position. The control plate is rested on retaining bars during open position. An independent claim is included for pipe connector.