Fluid Filter Centering Means for Seal Alignment
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Solution Overview
Problem
Existing fluid filters face issues with leaks between the screw housing and connecting flange due to imprecise positioning of the seal, which can occur during installation.
Innovation Solution
Incorporation of centering means on the filter insert to ensure precise alignment of the screw housing's seal with the connecting flange's sealing surface, utilizing centering rings and sealing lips to form a centering chain from the connecting flange to the screw housing's seal, ensuring accurate positioning without requiring special attention from operating personnel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the seal on the screw housing is positioned to engage with the connecting flange, then sealing function is achieved, but positioning precision is insufficient leading to leaks
Solution Approach 1:
The filter insert includes centering means (first and second centering elements) that perform preliminary centering of the screw housing relative to the connecting flange before the seal engages with the sealing surface. This preliminary centering action ensures that when the seal is pressed against the sealing surface during tightening, it is already in the correct position, preventing misalignment and leaks.
Solution Approach 2:
The centering means act as an intermediary mechanism between the filter insert and the screw housing. The first centering element engages with the connecting flange and the second centering element engages with the screw housing, mediating the positioning relationship between these components to achieve precise alignment without requiring high precision in the seal positioning itself.
2Ease of operation
If the seal positioning relies on operator attention, then flexibility is maintained, but installation consistency deteriorates
Solution Approach 1:
The centering means enable the filter insert to perform self-centering of the screw housing during installation. The geometric features (first centering element with connecting flange, second centering element with screw housing) automatically guide the components into correct alignment without requiring operator attention or special skills, ensuring consistent positioning every time the filter is installed.
Data Source
AI summary
A fluid filter is mountable on a connection flange having a central stand pipe and an exchangeable filter insert. The insert has a hollow cylindrical filter material body with two end plates on its end faces and is mountable on the stand pipe. A cup-shaped screw housing of the filter can be screwed to a free end of the stand pipe, and supports a seal on a free edge thereof, via which the screw housing is sealable against a connection flange sealing surface when mounted. The filter has a first arrangement on an end face area to center the end face area to the flange. The filter insert has a second arrangement on the end face area outer periphery for centering the screw housing free edge relative to the connection flange sealing surface. The second arrangement interacts in a centering manner with the screw housing free edge when installed.