Cylindrical Filter Split Joint Asymmetry Seal
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Solution Overview
Problem
Cylindrical filtration filters with split structures face challenges in maintaining effective sealability between split filters, allowing undiluted solutions to potentially enter the filtration system without being filtered, due to poor contact between flat facing surfaces.
Innovation Solution
The cylindrical filtration filter employs split filters with uneven facing surfaces that are complementary to each other, along with fasteners like hose bands, to ensure a secure and effective seal when assembled, preventing undiluted solutions from entering and enhancing the overall sealability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If flat facing surfaces are used between split filters, then manufacturing is simple, but sealability deteriorates allowing undiluted solution to enter without filtration
Solution Approach 1:
The patent applies asymmetry by designing one facing surface as convex and the other as concave, creating an asymmetric joint structure. This asymmetric design ensures that the convex portion of one split filter fits into the concave portion of the adjacent split filter, preventing leakage of undiluted solution while maintaining manufacturing simplicity. The asymmetric configuration provides mechanical interlocking that flat surfaces cannot achieve.
Solution Approach 2:
The patent employs curvature by forming at least one of the facing surfaces with a convex or concave shape rather than a flat surface. The curved/convex-concave interface creates a sealing mechanism where the curved surface of one split filter mates with the complementary curved surface of the other, ensuring reliable sealing against undiluted solution infiltration while keeping the structure simple to manufacture.
2Ease of operation
If split structure is used, then ease of operation improves for attachment and detachment, but sealability deteriorates due to gaps between split filters
Solution Approach 1:
The asymmetric convex-concave facing surfaces provide both ease of operation and reliable sealability. The design allows simple attachment by bringing the two asymmetric surfaces together, where the convex portion naturally guides into the concave portion. This asymmetric interface maintains the operational convenience of split filters while eliminating the sealing gaps that would exist with flat surfaces.
Solution Approach 2:
The curved/convex-concave interface design maintains the operational advantages of split filters (easy attachment and detachment) while solving the sealing problem. The curved surfaces create a natural sealing mechanism that prevents undiluted solution from leaking through the split filter interface, combining operational ease with sealing reliability.
Data Source
AI summary
A cylindrical filtration filter includes a cylindrical filter main body. The filter main body is constituted by at least two split filters. Each of the split filters has an arc shape in cross section. Each of the split filters includes a filter element for filtration and side frame bodies provided along side portions of the filter element. The side frame body of one of the two split filters adjacent to each other includes a first facing surface having an uneven shape. The side frame body of the other split filter includes a second facing surface having an uneven shape complementary to the first facing surface. The first facing surface and the second facing surface are fitted to each other when the filter main body is assembled.