Dual-Slit Suction Plate for Stronger Fabric Filter Backwashing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional fabric filter back-washing systems have limited effectiveness due to simple delayed straightening of pile threads, which restricts the efficient removal of foreign materials during liquid filtration.
Innovation Solution
A suction apparatus with a suction plate featuring parallel main and sub-suction slits separated by a partition, where pile threads undergo delayed straightening and fluctuation in the sub-suction slit and rapid straightening in the main suction slit, enhancing the back-washing effect and allowing for easier manufacturing through injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single suction slit is used in the conventional suction bar, then the structure is simple, but the back-washing effect is limited due to simple delayed straightening of pile threads
Solution Approach 1:
The suction plate is segmented into multiple suction slits (first suction slit and second suction slit) separated by a partition. This segmentation allows different regions of the pile threads to experience different suction forces, creating a more effective back-washing action that lifts and cleans the filter screen more thoroughly compared to a single suction slit design.
Solution Approach 2:
Different portions of the suction plate are designed with different suction characteristics. The first suction slit and second suction slit are positioned to act on different sections of the pile threads, creating localized variations in straightening and lifting effects. This local quality differentiation enhances the overall back-washing performance by addressing different areas of contamination.
2Reliability
If the suction plate is designed with multiple slits and partitions, then the back-washing effect is improved, but the manufacturing complexity increases
Solution Approach 1:
The suction plate, partitions, and multiple suction slits are designed as an integrated component that can be manufactured as a single piece using injection molding. This merging of functions into a single molded part eliminates the need for separate assembly of multiple components, thereby simplifying the manufacturing process despite the complex geometry required for multiple slits and partitions.
Solution Approach 2:
The mechanical assembly of multiple separate components (suction bars, partitions, plates) is replaced by a single injection-molded plastic component. This substitution of mechanical assembly with a molding process significantly reduces manufacturing complexity, assembly steps, and potential leakage points while maintaining the functional integrity of the multi-slit design.
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 improved back-washing synergy effectively removes foreign materials trapped on pile threads, with adjustable fluctuation and simplified production of the suction plate, enhancing filtration efficiency and manufacturing ease.
Implementation Method 1
a suction bar 13 that has a suction slit 17 across the side of the filter cloth and suctions a back-washing flow through the filter cloth
Data Source
AI summary
Provided are a suction apparatus for a fabric filter and a filtering device for liquid filtration using the same. A main suction slit and a sub-suction slit are provided in parallel by a partition. Thereby, pile threads undergo delayed straightening and fluctuation while going through the sub-suction slit and then are rapidly straightened in the main suction slit. Thus, a back-washing effect can be further improved.