Filtration Device Header Tube Air Venting
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Solution Overview
Problem
Conventional filtration devices with multiple filters connected by header tubes face challenges in achieving uniform back washing pressure, leading to insufficient washing effects and reduced water permeability, as air retention in the header tubes decreases back washing pressure and causes non-uniform washing across filters and cells.
Innovation Solution
The filtration device is designed with filter strings connected in rows by header tubes, and at least two rows are connected in parallel by a collecting tube placed higher than the header tubes, allowing air to escape and ensuring uniform back washing pressure across multiple filters or cells, with drain valves for air removal in the collecting tubes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple filters are connected by header tubes to increase filtration area, then water permeation amount increases, but air retention in header tubes causes non-uniform back washing pressure and reduces washing effectiveness
Solution Approach 1:
The invention extracts air from the header tubes by providing drain valves that allow air to be discharged during back washing operations. This removes the harmful air pockets that cause non-uniform pressure distribution, ensuring that back washing pressure is uniformly applied across all filters while maintaining the parallel connection structure for high productivity
Solution Approach 2:
The invention changes the operational parameters of the header tubes by introducing drain valves that can be opened during back washing. This allows the header tubes to transition from a closed state (during filtration) to an open state (during back washing), enabling air removal and ensuring uniform pressure distribution without compromising the overall system productivity
2Productivity
If back washing is performed frequently to maintain water permeability, then filtration effectiveness is maintained, but operational time and energy consumption increase
Solution Approach 1:
The invention employs a simple and inexpensive drain valve mechanism that can be quickly operated to remove air from the header tubes. This low-cost, easy-to-operate component enables efficient air removal during back washing, maintaining water permeability without requiring frequent or time-consuming back washing operations
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 ensures a uniform and effective back washing pressure is applied to all filters or cells, maintaining water permeability and reducing the frequency of back washing operations, while preventing filter damage from compressed air.
Implementation Method 1
a collecting tube which connects said header tubes, said collecting tube being placed higher than said header tubes
Implementation Method 2
partition walls comprising a porous body such as resin or ceramics to form cells as flow paths of liquid
Data Source
AI summary
A filtration device is provided having a large number of filters, each comprising a filter element and a casing. The device includes filter strings constructed so that a plurality of filters are connected in a row by header tubes, at least two rows of filter strings are further connected in parallel by a filtrate recovery collecting tube, and the filtrate recovery collecting tube is placed at a higher position than the filtrate recovery header tubes.