Liquid Filter Device With Segmented Laterals For Backwashing
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Solution Overview
Problem
Conventional liquid filtration systems face challenges in effectively removing a wide range of impurities, including minerals and gases, from liquids, particularly in ensuring efficient backwashing and media rejuvenation to maintain filtration capacity.
Innovation Solution
A liquid filter device design featuring a hub and radially extending laterals with internal cavities and strategically placed slots for uniform filtration media distribution, allowing for efficient liquid flow and backwashing mechanisms to displace and rejuvenate filter media, ensuring continuous filtration performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional liquid filtration systems are used, then basic filtration is achieved, but effective removal of wide range of impurities including minerals and gases is insufficient
Solution Approach 1:
The filtration system is segmented into multiple functional zones within the laterals - active zones with slots for filtration and inactive zones for media storage and backwashing operations. This segmentation allows simultaneous performance of multiple functions (filtration, media storage, backwashing) that resolves the contradiction between reliable filtration and versatile impurity removal capability.
2Reliability
If filtration media is used to remove impurities, then filtration capacity is maintained, but backwashing and media rejuvenation are inefficient
Solution Approach 1:
The system dynamically switches between filtration mode and backwashing mode by controlling liquid flow direction through the laterals. During backwashing, liquid flows upward through the active zones to fluidize and clean the media, then reverses to normal filtration flow. This dynamic operation enables efficient media rejuvenation while maintaining filtration capacity.
Solution Approach 2:
The filtration system operates in periodic cycles alternating between filtration and backwashing phases. During periodic backwashing intervals, the laterals are flushed to remove accumulated impurities and rejuvenate the media, thereby maintaining long-term filtration capacity and resolving the contradiction between sustained filtration performance and backwashing efficiency.
3Reliability
If uniform filtration media distribution is implemented, then filtration performance is enhanced, but device complexity increases
Solution Approach 1:
The laterals incorporate slots at specific locations (active zones) rather than uniform distribution throughout. This local quality approach places filtration openings only where needed for optimal performance, simplifying the overall structure while maintaining enhanced filtration performance through strategic slot positioning in the active zones.
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 device achieves comprehensive impurity removal and media rejuvenation, enhancing filtration efficiency and extending the lifespan of filtration media by utilizing active and inactive zones for effective liquid flow and granule displacement during backwashing.
Implementation Method 1
mechanical or chemical processes to filter water... passing un-treated water through a media bed to remove unwanted minerals
Implementation Method 2
oxidation mechanical media may be used remove minerals from water such as iron, manganese, and/or hydrogen sulfide
Implementation Method 3
ion exchange type media that can remove minerals such as calcium and magnesium in a process referred to as softening
Data Source
AI summary
A liquid filter device can filter liquid flowing therethrough using a granulated filter media included in a tank. The liquid filter device can perform a backwash of the granulated filter media by creating active zones and inactive zones in the tank. In the active zones, the granules are agitated and driven by a flow of liquid toward the top of the tank. In the inactive zones, the granules fall by gravity toward the bottom of the tank. The liquid filter device can include a conduit, a hub and a number of laterals, each of which may individual fit through an opening in the tank and be assembled to form a combined structure that will not fit through the opening in the tank. The active zones may be created above a top surface of each of the laterals by including slots on the top surface.