Backflushing Filter Element With Flow Guide Body
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Solution Overview
Problem
Existing backwash filters face challenges in maintaining the service life of filter elements due to inadequate cleaning efficiency, leading to reduced maintenance-free operation and increased maintenance needs.
Innovation Solution
The integration of a flow guide body within the filter element, which creates a passage for a concentrated cleaning flow that intensifies the backwash operation, combined with a movable cleaning body that generates a turbulent cross-flow, enhances the cleaning effectiveness of the filter wall, particularly at the center section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional backwash filters are used, then the filter elements can be cleaned, but the cleaning efficiency is insufficient leading to reduced service life
Solution Approach 1:
The filter element is divided into multiple sections by built-in elements (dividers) that create separate flow paths. This segmentation allows the cleaning flow to be directed to specific sections, improving cleaning efficiency and extending service life by ensuring thorough cleaning of all filter surfaces.
Solution Approach 2:
The built-in elements create localized cleaning zones by forming passages that direct cleaning flow to specific areas of the filter element. This local quality approach ensures that cleaning is concentrated where needed, improving overall cleaning efficiency and reliability.
2Speed
If the free flow channel cross section is narrowed to compensate pressure loss, then flow velocity increases, but the cleaning flow distribution becomes uneven
Solution Approach 1:
The filter element is divided into multiple sections by built-in elements (dividers) that create separate flow paths. This segmentation allows the cleaning flow to be directed to specific sections, improving cleaning efficiency and extending service life by ensuring thorough cleaning of all filter surfaces.
Solution Approach 2:
The built-in elements create localized cleaning zones by forming passages that direct cleaning flow to specific areas of the filter element. This local quality approach ensures that cleaning is concentrated where needed, improving overall cleaning efficiency and reliability.
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 significantly improves the cleaning behavior and extends the service life of the filter elements and the entire backflush filter by ensuring intensive and targeted cleaning, reducing maintenance requirements.
Implementation Method 1
a cleaning flow which, in addition, is cleaned in the cross-flow, lets through
Implementation Method 2
the built-in elements form a flow guide body in the center of the filter element, with at least one passage being formed between the flow guide body and the filter wall
Data Source
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AI summary
The invention relates to a backflushing filter (1) for filtering fluids, with filter elements (10) that are open at both ends and have a filtering means forming a filter wall (14) which is flowed through in the filtering direction during filtering operation, and with rotatable backflushing elements (8A, 8B) for both ends of the filter elements (10), with which the latter can be subjected to an inflowing or outflowing fluid stream from both ends as a cleaning pulse during backflushing operation. According to the invention, a flow baffle (20) may be provided as a fitted element midway between the filter elements, or a cleaning body that can be moved back and forth to a limited extent may be provided, at least one passage or annular gap being formed between the flow baffle (20) or cleaning body and the filter wall (14), allowing a cleaning flow (30) which is directed along the filter wall (14) and additionally cleans the latter in cross-flow to pass through during backflushing operation. The invention also relates to filter elements with a fitted element or movable cleaning body for corresponding backflushing filters.