Filter Element Securing Mechanism for Easier Maintenance
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Solution Overview
Problem
The existing filter element groups face difficulties in assembly and disassembly, particularly during maintenance, due to high holding forces in the securing device that can lead to automatic rotation issues and increased resistance from accumulated impurities.
Innovation Solution
The securing device is redesigned to prevent rotation between the cover plate and the second outer end plate by using a separate securing element with axial through openings and protrusions, allowing for easy adjustment between securing and release positions, thereby simplifying assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high holding forces are used in the securing device to prevent automatic rotation, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The securing element is designed to be movable between a securing position (where it engages with the catch contour to prevent rotation) and a release position (where it can be easily disengaged). This dynamic positioning allows the same component to provide high holding forces during operation while enabling easy assembly and disassembly during maintenance.
Solution Approach 2:
The securing device is separated into distinct functional components: a securing element with clip elements for engagement, a cover plate with through openings, and a second outer end plate with catch contour protrusions. This segmentation allows the securing element to be independently positioned and adjusted, facilitating easy engagement and disengagement while maintaining reliable rotation prevention.
2Reliability
If impurities accumulate between cover plate and second outer end plate, then reliability deteriorates, but ease of operation worsens
Solution Approach 1:
The securing element is extracted as a separate, removable component that can be independently positioned. During disassembly, the securing element can be disengaged from the catch contour protrusions before removing the cover plate, preventing impurities from interfering with the rotation process and maintaining ease of operation even after prolonged use.
Data Source
AI summary
A filter element group for a filter device for filtering a fluid may include a ring-shaped working filter element, a ring-shaped protective filter element, an assembly device, and a securing device. The working filter element may include a ring-shaped working filter body, a first outer end plate, and a second outer end plate. The protective filter element may include a ring-shaped protective filter body, a first inner end plate, and a second inner end plate. The securing device may be adjustable between a securing state where the cover plate is axially secured to the second outer end plate and a release state where the cover plate is axially removable from the second outer end plate. When in the securing state, the securing device may secure the cover plate to the second outer end plate preventing rotation of the cover plate in the circumferential direction.