Parallel Filter Counterflow Washing for Continuous Filtration
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Solution Overview
Problem
Existing filtration systems face issues with filter clogging due to particles larger than the desired size, leading to operational inefficiencies and the need for external cleaning devices, which are not always effective.
Innovation Solution
A filter system utilizing two parallel filters with a counterflow cleaning mechanism, where filtered material is redirected to clean the dirty side of the other filter, eliminating the need for external cleaning devices and ensuring uninterrupted operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional filtration systems are used, then particles are separated from the material, but filter clogging occurs and operational efficiency decreases
Solution Approach 1:
The filtration system is divided into multiple parallel filters that can operate independently. When one filter becomes clogged, others continue functioning, maintaining overall system productivity while reliability is preserved through the segmented architecture
Solution Approach 2:
The system performs preliminary cleaning actions by redirecting filtered material to clean clogged filters before complete blockage occurs. This preventive maintenance approach maintains operational efficiency while ensuring filtration effectiveness is sustained
2Ease of operation
If external cleaning devices are added to clean filters, then filter cleaning capability is improved, but device complexity increases
Solution Approach 1:
The system cleans its own filters using the filtered material that flows through the system. The cleaned material is redirected back through clogged filters, automatically removing particles without requiring external cleaning devices, thus maintaining ease of operation while minimizing device complexity
Solution Approach 2:
The filtered material serves dual purposes: it is both the product of filtration and the cleaning medium for the filters. This multi-functionality eliminates the need for separate cleaning systems, reducing device complexity while maintaining effective filter cleaning
3Loss of substance
If filtered material is used for counterflow cleaning, then waste generation is reduced, but system complexity increases
Solution Approach 1:
The system implements a feedback loop where filtered material is redirected back through the filtration system in counterflow to clean the filters. This feedback mechanism reduces waste by reutilizing the filtered material, and while it adds flow control complexity, the complexity is managed through coordinated valve operation in the parallel filter configuration
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 system effectively cleans filters without external devices, maintains continuous operation, reduces waste generation, and minimizes energy consumption by using integrated counterflow washing, allowing for efficient filtration of high-viscosity materials.
Implementation Method 1
The filtration may be performed using filters provided with filter members, through filter surfaces of which the material to be filtered is conducted and in which the particles larger than a desired particle size do not pass through the filter surfaces
Implementation Method 2
Filtered material having passed through one filter is conducted during the cleaning cycle from the clean side of that filter to the clean side of another filter, whereby it removes particles captured on the dirty side of the other filter based on the counterflow principle
Data Source
Figure 1
Figure 2
AI summary
A filter system and method for filtering. The filter system (SJ) comprises at least two filters (S1, S2) having filter elements (12) for filtering a material to be filtered. The material to be filtered is conducted to a dirty side (LP) of the filter and filtered material is conducted out from a clean side (PP) of the filter. A clogged filter is washed by counterflow washing in which the filtered material is conducted from the clean side of one filter to the clean side of another filter.