Flexible Self-Cleaning Filter for Rainwater Debris Management
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Solution Overview
Problem
Existing rainwater filtration systems face challenges in maintaining continuous filtration due to debris accumulation in filter elements, which reduces filtering capacity and requires periodic cleaning or replacement.
Innovation Solution
A self-cleaning filter device with a flexible and expandable filter element that adapts to rainfall conditions, allowing debris to be expelled without interrupting the filtration process, by oscillating movements in response to varying rainwater flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filter elements are used to capture debris in rainwater filtration systems, then filtering capacity is improved, but debris accumulation on filter walls reduces filtering ability and may make devices inoperative
Solution Approach 1:
The filter element is designed with flexible material that can dynamically change its configuration. During rainfall, the filter element expands to capture debris; during cleaning cycles, it contracts to allow debris removal. This dynamic behavior resolves the contradiction by enabling the filter to both accumulate debris for filtration and periodically clear itself to maintain filtering capacity.
Solution Approach 2:
The system implements periodic cleaning cycles where the filter element contracts and debris is flushed out through the screening device. This periodic action prevents permanent debris accumulation that would otherwise reduce filtering capacity, while maintaining continuous operation during both filtration and cleaning phases.
2Reliability
If periodic cleaning or replacement of filter elements is performed, then filtering capacity is restored, but the filtration process must be interrupted
Solution Approach 1:
The system is divided into two functional segments: a filtering segment that captures debris during normal operation and a cleaning segment that periodically removes accumulated debris. This segmentation allows one segment to be cleaned while the other continues filtration, enabling continuous operation without interruption.
Solution Approach 2:
The filter element maintains filtering capability throughout the cleaning cycle by using a screening device that allows water flow while removing debris. The flexible contraction and expansion cycles enable continuous water treatment without stopping the filtration process, ensuring uninterrupted useful action.
3Productivity
If multiple filtering devices are used to maintain filtration during cleaning, then continuous filtering is achieved, but installation and maintenance costs increase
Solution Approach 1:
The single filter element is designed to perform multiple functions: filtration during expansion, self-cleaning during contraction, and debris ejection through the screening device. This multi-functionality eliminates the need for multiple separate filtering devices while maintaining continuous filtration capability, reducing both installation and maintenance costs.
4Productivity
If reservoirs are provided for temporary storage of rainwater during filter cleaning, then filtration continuity is maintained, but system cost and maintenance requirements increase
Solution Approach 1:
The filter element performs self-cleaning by utilizing the rainwater flow itself to flush out accumulated debris during contraction cycles. This self-service mechanism eliminates the need for external reservoirs or complex water diversion systems, maintaining filtration continuity while simplifying the overall system structure and reducing costs.
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 maintains consistent filtering capacity by continuously removing debris, minimizing water loss, and reducing maintenance costs by eliminating the need for frequent filter cleaning or replacement.
Implementation Method 1
pH flexible element 117, able to contract or to expand
Implementation Method 2
by oscillating movements in response to varying rainwater flow
Data Source
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AI summary
A self-cleaning filter device adaptable to the volume of rainwater and a method for its use are described. The self-cleaning filter device adaptable to the volume of rainwater comprises a body including a rainwater inlet, a debris outlet, at least one filtered rainwater outlet, a filter element provided inside the body and comprising a flexible element having a filter means involving and secured to it and whose upper end is connected to said rainwater inlet and whose lower end is connected to said debris outlet, said filter element being provided with an upper portion, a central portion and a lower portion, and a regulating device provided inside the body and connected to the filter element.