Modular Filter Device with Grout Sealing and Replaceable Elements
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Solution Overview
Problem
Existing filter devices for fluid media filtration are costly to manufacture, prone to leaks due to inaccurate sealing, and lack pressure stability, requiring replacement of entire modules for defects and involving complex, costly casting processes.
Innovation Solution
A modular filter device with a holding frame, end unit, and grout material for sealing ceramic filter elements, allowing individual element replacement and increased pressure stability through a simplified, cost-effective design using plastic or metal materials for the frame and end unit, with grout material providing both sealing and bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If individual filter elements are separately sealed, then the filter device can be assembled with multiple elements, but the sealing becomes inaccurate and prone to leaks due to shrinkage during sintering
Solution Approach 1:
The sealing function is merged with the structural support function by integrating the sealing means into the holding frame itself. The holding frame contains a sealing means that seals against the outer circumference of the filter element, combining the functions of holding and sealing in a single integrated structure, thereby eliminating sealing inaccuracies while maintaining modular assembly capability
Solution Approach 2:
A sealing means acts as an intermediary element between the holding frame and the filter element. This sealing means compensates for dimensional variations and shrinkage of the filter element during sintering, ensuring accurate sealing without requiring the filter element itself to be precisely dimensioned
2Reliability
If overall casting of flat membrane assembly is used, then the structure is integrated, but the entire module must be replaced if one element has a defect
Solution Approach 1:
The filter device is segmented into independent, interchangeable filter elements that can be individually removed and replaced. Each filter element is a separate component housed in the holding frame, allowing defective elements to be replaced without affecting the structural integrity or requiring replacement of the entire module
3Productivity
If conventional filter devices are used, then filtration is provided, but pressure stability is insufficient during back-rinsing
Solution Approach 1:
The sealing means is pre-configured in the holding frame to establish a secure seal before back-rinsing operations begin. This preliminary sealing action ensures that the filter element is firmly held and sealed against the frame, providing the necessary pressure stability to withstand the reverse flow pressures during back-rinsing while maintaining filtration capability
Data Source
AI summary
The invention relates to a filter device (10) serving to filter a liquid, in particular for treating water. The filter device comprises: at least two plate-shaped filter elements (12) and at least one holding element (20) for filter elements (12). According to the invention, the holding element (20) comprises a holding frame (22), a grout material (26), and an end unit (24), which is separate from the holding frame (22), wherein the grout material (26) is arranged between the filter elements (12) and the holding frame (22), such that the grout material seals the filter elements (12) against the holding frame (22), that the end unit (24) is fastened on the holding frame (22) in a liquid-tight manner, and that the holding frame (22) and the end unit (24) delimit a liquid collection chamber (40).