Filter Diaphragm Stud Attachment for Recessed Plate Filters
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Solution Overview
Problem
Existing recessed plate-type filters face issues with diaphragm attachment methods that lead to corrosion, require two-sided manipulation, and create stress discontinuities, as well as impurity accumulation, resulting in reduced longevity and premature wear.
Innovation Solution
A filter diaphragm and diaphragm filter plate assembly using studs and corresponding holes for one-sided attachment, eliminating the need for separate fasteners and preventing impurity buildup, while avoiding stress concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the diaphragm is attached to the filter plate by clamping with separate fasteners, then the attachment is secure, but the fasteners are susceptible to corrosion and require access to both sides of the filter plate
Solution Approach 1:
The patent merges the diaphragm and filter plate into a single integrated structure where the diaphragm is directly formed as part of the filter plate body. This eliminates the need for separate fasteners, clamps, or other attachment components, thereby reducing device complexity while maintaining secure attachment through the integrated design.
2Reliability
If the diaphragm is attached by inserting bead into groove, then attachment is achieved, but the groove forms a discontinuity causing local maximum of internal stresses
Solution Approach 1:
The patent merges the diaphragm and filter plate into a continuous integrated structure without grooves or discontinuities. The diaphragm is formed as an integral part of the filter plate, eliminating stress concentration points and maintaining uniform strength distribution across the plate structure.
Solution Approach 2:
The patent removes the groove feature entirely from the design. By eliminating the groove that caused stress discontinuities, the design achieves both attachment functionality and structural integrity without the harmful stress concentration effects.
3Reliability
If the bead and groove form a pocket structure, then attachment is provided, but impurities accumulate in the pocket causing premature wear
Solution Approach 1:
The patent merges the diaphragm and filter plate into a smooth integrated structure without pockets or cavities. This eliminates the trapping zones where impurities could accumulate, allowing compression medium and entrained particles to flow freely without concentrating at attachment interfaces.
Solution Approach 2:
The patent removes the pocket-forming bead and groove structure. By eliminating the pocket geometry, the design prevents impurity accumulation and the associated premature wear problem while maintaining effective diaphragm attachment through integration.
4Reliability
If heavy filter plate must be manipulated during installation, then secure attachment from both sides is achieved, but installation time and labor increase
Solution Approach 1:
The patent merges the attachment functionality into the filter plate structure itself, allowing installation from one side only. The integrated diaphragm design eliminates the need to manipulate heavy filter plates or access both sides during installation, significantly reducing installation time and labor requirements.
Data Source
AI summary
A filter diaphragm for a filter plate assembly of a recessed plate-type filter, such as a filter press or a tower press. The diaphragm includes a sheet-like body having a flexible structure, and, at least on a side of the body, a plurality of distinct attachment studs to be inserted into corresponding distinct attachment holes of a respective filter plate for attaching the diaphragm to the filter plate. The attachment studs are arranged along a sealing region extending along a periphery of the filter diaphragm and extend in a direction perpendicular to the diaphragm body. The attachment studs are equipped with an opening extending through the filter diaphragm, between the opposing sides thereof. A diaphragm filter plate and -assembly, and filter are also concerned.