Wedge Filter Plate With Progressive Mesh Gradient
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Solution Overview
Problem
Conventional wedge filtration media face challenges such as high production costs, filter cake accumulation leading to increased filtration pressure, and the need for high-pressure washing or mechanical cleaning, particularly in residential and small-scale systems with uniform mesh sizes.
Innovation Solution
The design features a wedge filter plate with concentrically circular arc wedge-shaped strings and radial struts, allowing for easy dismantling and washing without high-pressure water or air, and a progressive mesh size from inner to outer filter screens to reduce filter cake accumulation and maintain low filtration pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional wedge filtration media with uniform mesh size is used, then the structure is simple and easy to manufacture, but filter cakes accumulate easily on the filter surface leading to increased filtration pressure and reduced outflow volume
Solution Approach 1:
The patent applies local quality by varying the mesh size across different radial positions of the wedge filter. The mesh aperture is smaller near the inner radius and larger near the outer radius, creating zones with different filtering characteristics. This allows particles of different sizes to be captured at different radial positions, reducing overall filter cake accumulation while maintaining manufacturing simplicity through a continuous gradient design.
Solution Approach 2:
The patent segments the filtration function by dividing the filter into multiple radial zones with different mesh sizes. Each zone acts as an independent filtering stage, with inner zones capturing finer particles and outer zones capturing coarser particles. This segmentation prevents uniform mesh size from causing excessive filter cake accumulation across the entire surface.
2Productivity
If a series of filter screens with different mesh sizes are applied to classify particles, then filtration efficiency is improved and filter cake accumulation is reduced, but the device complexity and production cost increase
Solution Approach 1:
The patent merges multiple filter screens with different mesh sizes into a single integrated wedge filter structure. Instead of using separate filter screens stacked together, the mesh size varies continuously or in gradients across the radial direction of a single wedge-shaped filter element. This combining approach maintains filtration efficiency while significantly reducing device complexity and production cost.
Solution Approach 2:
The patent transitions from using multiple discrete filter screens in the radial direction to creating a continuous mesh size gradient across the radial dimension. This dimensional approach allows particles of different sizes to be captured at different radial positions within a single filter structure, achieving series filtration functionality without the complexity of multiple separate components.
3Reliability
If high-pressure water flow or mechanical cleaning is used to remove filter cakes, then the filter can be reused, but the energy consumption and operational complexity increase
Solution Approach 1:
The patent applies self-service by designing the wedge filter with an inclined surface that enables filter cakes to be removed naturally by gravity when the filter is tilted. The wedge shape and inclined surface allow accumulated particles to slide off automatically during the backwash or maintenance phase, eliminating the need for high-pressure water jets or mechanical scraping systems, thereby reducing energy consumption and operational complexity.
Solution Approach 2:
The patent utilizes the wedge shape and inclined surface geometry to facilitate easy removal of filter cakes. The curved or angled surface prevents filter cakes from adhering strongly and allows them to be dislodged and removed with minimal effort, either by gravity alone or with simple water rinsing, reducing the energy and complexity associated with cleaning 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 construction enhances strength, reduces production costs, and allows for easy cleaning and reuse, effectively managing filter cake accumulation and maintaining filtration efficiency with progressive mesh sizes, suitable for both industrial and residential applications.
Implementation Method 1
the wedge shape of the filtering aperture causes the filter cakes to slide down to the sedimentation chambers easily
Data Source
AI summary
An improved construction of filtration media of a wedge filter provides a performance on both surface and inner filtration mechanisms with offering many times recycled use by washable functions. Particularly a wedge filter plate is used to construct a hollow cylindrical type media of wedge filter.