Flexible Scraper Micro Filter for Plastic Recycling
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Solution Overview
Problem
Existing plastic recycling filters face issues with scraper continuity, blunting, and permanent damage due to melt pressure, leading to low cleaning performance and frequent replacements.
Innovation Solution
A filter device with a flexible scraper element fixed in a continuous position to maintain scraper movement and sharpen itself, combined with a pressure discharge element that opens to prevent melt pressure damage, ensuring extended scraper life and improved filtering performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a rigid scraper element is used in existing filters, then the scraper can be easily manufactured and installed, but the scraper becomes blunted quickly and requires frequent replacement
Solution Approach 1:
The scraper element is designed with a flexible structure that allows it to dynamically adapt to the filtering element surface, maintaining continuous contact and scraping action. This flexibility enables the scraper to accommodate surface variations without becoming blunted, thereby extending its service life while remaining manufacturable
Solution Approach 2:
The scraper material properties are modified to include flexibility characteristics, changing from rigid to flexible state. This parameter change allows the scraper to maintain its functional properties over extended periods by adapting to operational conditions rather than degrading through blunting
2Device complexity
If the scraper is not fixedly configured, then the filter structure is simpler, but the scraper movement continuity cannot be maintained
Solution Approach 1:
The scraper is fixedly configured with a flexible structure that enables continuous movement along the filtering element. This dynamic configuration ensures reliable contact and scraping action throughout the filtering process, maintaining movement continuity without significantly increasing overall device complexity
Solution Approach 2:
The fixed configuration of the flexible scraper ensures continuous scraping action along the filtering element surface. The scraper maintains constant contact and movement, eliminating interruptions in the useful action of separating plastic from waste throughout the operational cycle
3Ease of manufacture
If mesh type sieves are used, then the filter is easier to manufacture, but the pores expand under pressure and reduce filtering performance
Solution Approach 1:
The sieve structure transitions from a traditional mesh type to a micro-filter design with controlled pore dimensions. This parameter change in the filtering element structure prevents pore expansion under pressure, maintaining precise filtering gaps and consistent performance throughout operation
Solution Approach 2:
The filtering element is designed as a composite structure combining micro-filter technology with the sieve function. This composite approach maintains manufacturing feasibility while achieving the precision required to prevent pore expansion and maintain filtering performance under operational pressures
4Productivity
If the filtering element is continuously pressed by the scraper, then the scraping action is effective, but the filtering element suffers permanent damage
Solution Approach 1:
The pressure application parameters are optimized to provide sufficient scraping force while preventing damage to the filtering element. The flexible scraper distributes pressure evenly, and the discharge element controls pressure buildup, maintaining effective scraping without causing permanent damage to the filtering element structure
5Device complexity
If the filter operates continuously without discharge mechanisms, then the structure is simpler, but the filter becomes blocked by impurities and requires frequent replacement
Solution Approach 1:
The discharge element is designed to extract and remove accumulated impurities from the filtering element surface. By actively taking out contaminants that would otherwise block the filter, the system maintains continuous operational productivity without requiring frequent filter replacement
Solution Approach 2:
The filter system incorporates a self-cleaning mechanism through the discharge element that automatically removes impurities during operation. This self-service function maintains filtering performance and operational continuity without requiring external intervention or frequent manual maintenance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures continuous scraper operation, extended scraper life, and prevents permanent damage to filtering elements, resulting in enhanced cleaning performance, reduced energy consumption, and extended filter lifespan.
Implementation Method 1
the scraper element with a flexible structure... presses on the filtering element... the scraper movement is made continuousşy, the scraper is sharpened continuously
Implementation Method 2
a discharge element forming an opening in high pressure situations is used to solve this problem... a pressure discharge element that can be opened and closed, which can create a gap to eliminate damages caused by reverse pressure
Data Source
AI summary
The present invention relates to a filter device with enhancements to ensure the continuity of the function of the flexible scraper element (23), which separates plastic and waste (pollution, foreign matter) from each other, presses on the filtering element to be used in recycling systems for the recovery of plastic materials, to enable the scraper to sharpen itself, to prevent permanent damage on the filtering element (9) due to the melt pressure.