Cross-flow Filter Block with Turbulent Flow and Back-flushing
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Solution Overview
Problem
Current filtration systems in chemical monitoring systems require frequent replacement or cleaning of filter elements, leading to costly downtime, disposal issues, and increased operational expenses due to clogging and filter cake buildup, necessitating a solution to extend filter element life and reduce downtime and disposal costs.
Innovation Solution
The system employs a filter block with an inlet and outlet pipe configuration that creates turbulent flow to dislodge particles from the filter element, combined with a pressure accumulator for back-flushing to remove filter cake, allowing for online monitoring and extended filter element life without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter element is used to filter fluid in a chemical monitoring system, then the fluid is cleaned and monitored properly, but the filter element becomes clogged with filter cake accumulation requiring frequent replacement
Solution Approach 1:
The system implements periodic back-flushing cycles where the inlet valve closes to stop forward flow, allowing accumulated filter cake to be dislodged and removed through the outlet pipe. This periodic reversal of flow direction cleans the filter element surface without requiring removal or replacement, maintaining filtration quality while extending service life.
Solution Approach 2:
The system reverses the flow direction through the filter element by closing the inlet valve, causing fluid to flow backward through the filter media. This inverted flow removes accumulated filter cake from the chamber-side surface, restoring filtration efficiency and extending the filter element's operational life.
2Reliability
If filter elements are replaced frequently to maintain filtration quality, then fluid monitoring reliability is maintained, but system downtime and operational costs increase
Solution Approach 1:
The system performs self-cleaning through automated back-flushing operations controlled by the inlet valve. The filter element cleans itself by reversing flow to dislodge and remove accumulated filter cake, eliminating the need for manual intervention, system shutdown, or filter replacement, thereby maintaining continuous operation and reducing downtime.
Solution Approach 2:
The system implements periodic back-flushing cycles where the inlet valve closes to stop forward flow, allowing accumulated filter cake to be dislodged and removed through the outlet pipe. This periodic reversal of flow direction cleans the filter element surface without requiring removal or replacement, maintaining filtration quality while extending service life.
3Reliability
If filter elements are replaced frequently to maintain system efficiency, then filtration performance is maintained, but disposal costs and environmental compliance expenses increase
Solution Approach 1:
Instead of discarding filter elements after single-use, the system recovers their functionality by periodically removing accumulated filter cake through back-flushing. The filter element is cleaned and reused multiple times, reducing disposal requirements and associated environmental compliance costs while maintaining filtration performance.
Solution Approach 2:
The system performs self-cleaning through automated back-flushing operations controlled by the inlet valve. The filter element cleans itself by reversing flow to dislodge and remove accumulated filter cake, eliminating the need for manual intervention, system shutdown, or filter replacement, thereby maintaining continuous operation and reducing downtime.
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
This configuration reduces filter cake buildup and extends the life of filter elements by using turbulent flow and back-flushing, minimizing downtime and disposal costs while maintaining system efficiency.
Implementation Method 1
The outlet axis of the outlet pipe is offset from the inlet axis of the inlet pipe such that the fluid undergoes a change of direction while passing through the filter block chamber thereby causing turbulent flow within the filter block chamber
Implementation Method 2
The turbulent flow produces a cleaning vortex flow within the filter block that sweeps off particles that accumulate on the filter block chamber-side of the filter element
Implementation Method 3
Closing the inlet valve causes a relatively sharp stop to the flow of fluid through the filter block resulting in a back-flushing flow of fluid from a pressure accumulator located in the filtered fluid conduit to the filter block chamber through the filter element
Implementation Method 4
Closing the inlet valve causes a relatively sharp stop to the flow of fluid through the filter block resulting in a back-flushing flow
Data Source
Figure 1
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AI summary
A filtration and monitoring system includes an online monitoring device and a filter block having a chamber therein. An inlet pipe provides fluid to the filter block chamber and has an inlet valve located therein configured to shut off the flow of the fluid through the inlet pipe. An outlet pipe removes fluid from the filter block chamber. A filtered fluid conduit fluidically connects the filter block with the monitoring device. The outlet axis of the outlet pipe is offset from the inlet axis of the inlet pipe such that the fluid undergoes a change of direction while passing through the filter block chamber thereby causing turbulent flow within the filter block chamber. The turbulent flow within the filter block sweeps off particles that accumulate on the filter block chamber- side of the filter element to reduce the buildup of filter cake on the filter element. Closing the inlet valve causes a relatively sharp stop to the flow of fluid through the filter block, resulting in a back- flushing flow of fluid through the filter element from a pressure accumulator located in the filtered fluid conduit to the filter block chamber. The back-flushing flow of fluid dislodges filter cake accumulated on the filter block chamber-side of the filter element.