Filter Scraper With Rotational Screw And Air Inlet
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Solution Overview
Problem
Current filter systems for sludge handling face challenges in effectively cleaning debris from filter cartridge surfaces, leading to reduced filter lifetimes and suboptimal filtration efficiency.
Innovation Solution
A scraper system is integrated along the length of filter elements to remove surface sludge, combined with back flushing using air or liquid to enhance cleaning, and a scraper array with interconnected elements moves longitudinally to match the filter body shape, accompanied by a fluid discharge system to clear debris from screw threads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If compressed air back flushing is used to clean filter elements, then filter elements can be cleaned automatically without replacement, but cleaning effectiveness is insufficient and filter lifetime is not maximized
Solution Approach 1:
A scraper element is introduced as an intermediary mechanical component that physically contacts and scrapes deposits from the filter element surface. The scraper element acts as a mediator between the cleaning system and the filter element, providing enhanced mechanical removal capability beyond what compressed air alone can achieve.
Solution Approach 2:
The scraper element is designed with a segmented structure including a body portion and a scraper portion that can be positioned at different locations. This segmentation allows the scraper to effectively reach and clean different areas of the filter element surface, including hard-to-reach regions.
2Productivity
If filter elements are cleaned manually or replaced frequently, then cleaning can be performed, but maintenance complexity increases and operational time is lost
Solution Approach 1:
The filter cleaning system is designed to be self-service, automatically cleaning the filter elements during operation or maintenance cycles without requiring manual intervention. The scraper element moves along the filter element surface autonomously, removing deposits and restoring filtration efficiency without taking the system offline.
Solution Approach 2:
The scraper element performs preliminary cleaning action by removing bulk deposits before compressed air back flushing is applied. This preliminary mechanical scraping prepares the filter surface for more effective air blasting, achieving better overall cleaning results while reducing the complexity of manual maintenance operations.
3Reliability
If scraper elements are positioned to effectively clean filter surfaces, then cleaning coverage is improved, but scraper element design complexity increases
Solution Approach 1:
The scraper element incorporates a flexible or adjustable positioning mechanism that allows it to dynamically adapt to the filter element surface contour. This dynamic positioning capability ensures consistent contact and effective cleaning across the entire filter surface without requiring complex rigid positioning systems.
Solution Approach 2:
The scraper element is designed with a curved or cylindrical scraper portion that matches the curvature of the filter element surface. This spherical or curved geometry allows the scraper to conform to and effectively clean the rounded surfaces of cylindrical filter elements, improving coverage while maintaining a relatively simple design.
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 significantly improves filter cleaning efficiency, extends filter life, and maximizes filtration performance by effectively removing deposits from filter surfaces, allowing for longer operational hours and improved maintenance practices.
Implementation Method 1
A scraper element is disposed about a corresponding external surface and configured to move along the longitudinal length of the corresponding filter body
Implementation Method 2
the scraper element removes deposits on the external surface of the filter body as it moves
Implementation Method 3
injecting air into the filter apparatus can be used to create air bubbles that move along the filter element to loosen or remove a portion of the deposits
Implementation Method 4
The air dislodges the debris on the outer filter surfaces
Data Source
AI summary
A filter apparatus and method for cleaning filter elements. The filter elements, each including a filter body with an external surface enclosing a filter passage, extend along a longitudinal axis of a vessel housing. A scraper element is disposed about the external surface of each filter body and travels along the longitudinal length of the filter body via a rotational screw to remove deposits. A lower air inlet is included on the vessel to loosen deposits on the filter surfaces, such as during or prior to scraping.