Interchangeable Filter Grid Assembly for Fine Particle Separation
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Solution Overview
Problem
Current filtering methods fail to remove smaller particles like pine needles, textile threads, and seeds due to mesh screen openings larger than 2 millimeters, and existing systems are not designed for interchangeable filter grids to efficiently handle both large and small debris.
Innovation Solution
An improved filter grid assembly using links with slot openings to accommodate filter media with openings as small as 0.25 millimeters, supported by stainless steel or polymer links, allowing for the use of stainless steel cloth, polymer mesh, or perforated stainless steel plates, with interchangeable grid sections for versatile particle removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If mesh screens with openings less than 2 millimeters are used to filter smaller particles, then filtering effectiveness for small particles is improved, but the structural support and reliability of the filter assembly deteriorates
Solution Approach 1:
The patent uses flexible filter media such as stainless steel cloth and polymer mesh that can be tensioned across the link slots. These flexible membranes provide the necessary structural support while maintaining small opening sizes (0.25mm) for effective particle filtration, resolving the contradiction between filtering effectiveness and structural reliability.
2Productivity
If filter grids with smaller openings are used to remove miniscule particles, then particle removal efficiency is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The filter assembly is segmented into multiple interchangeable grid sections, each with different opening sizes (0.25mm to 25mm). This segmentation allows the system to handle various particle sizes efficiently without redesigning the entire assembly, maintaining productivity while managing device complexity through modular design.
Solution Approach 2:
The patent employs filter media with varying opening parameters (0.25mm to 25mm) to match different filtration requirements. By changing the opening parameter rather than the entire filter structure, the system achieves high particle removal efficiency while controlling device complexity and manufacturing cost.
3Measurement precision
If dedicated filter assemblies are designed for specific particle sizes, then filtering performance is improved, but adaptability and versatility deteriorate
Solution Approach 1:
The filter assembly is designed as a universal system with interchangeable grid sections that can handle a wide range of particle sizes (0.25mm to 25mm). Each grid section maintains optimized filtering performance for its specific opening size while the overall system provides adaptability through easy interchangeability, resolving the contradiction between filtering performance and versatility.
4Stability of the object's composition
If fixed filter grids are used in the assembly, then structural stability is improved, but ease of maintenance and interchangeability worsen
Solution Approach 1:
The filter grid sections are designed to be dynamically interchangeable rather than permanently fixed. The links with slot openings allow grids to be inserted, removed, and replaced easily while maintaining structural stability during operation. This dynamic design enables easy maintenance and grid interchangeability without compromising structural integrity.
Data Source
AI summary
A filter apparatus separates fine particles such as pine needles, threads, hairs and seeds from a liquid influent. A rotating grid assembly has multiple grid sections mounted by top-to-bottom connected links, supporting a filter media having specified openings sufficient for entrainment of miniscule particles. Grid sections are interchanged for collection and discharge of various sized particles using the same apparatus.