Filter Disc Recesses for Sediment Prevention in Well Filters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing well filter segments with concentrically arranged filter discs face challenges in completely filtering out contaminants, as sediments accumulate in the flow gap between discs, requiring frequent and labor-intensive cleaning processes.
Innovation Solution
The filter discs are designed with recesses in the corner regions between the outer peripheral edge and flat sides, creating a turbulent flow at the inlet of the flow gap, which prevents impurities from accumulating by increasing water speed and reducing static pressure, thereby enhancing filtration efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filter discs are arranged concentrically spaced one above the other to form flow gaps, then groundwater filtration is achieved, but sediments accumulate on the flat sides of the filter discs in the flow gap inlet area
Solution Approach 1:
The invention applies a local structural modification (recesses) specifically in the corner regions where sediment accumulation occurs most frequently. These recesses create localized turbulent flow zones that prevent sediment deposition, while the rest of the filter disc maintains its original filtration function. This targeted approach addresses the sediment accumulation problem without compromising overall filtration effectiveness.
Solution Approach 2:
The recesses in the corner regions generate turbulent flow (a form of fluid mechanical vibration) in the flow gap inlet area. This turbulence creates fluctuating flow patterns that prevent sediments from settling and accumulating on the flat sides of the filter discs, thereby solving the sediment accumulation problem while maintaining continuous filtration.
2Object-generated harmful factors
If cleaning liquid is pressed through the flow gap under high pressure to remove deposits, then sediment removal is achieved, but cleaning time and effort increase
Solution Approach 1:
The recesses are designed to prevent sediment accumulation in the first place by creating turbulent flow zones that keep the flow gap inlet area clean. This preliminary preventive action eliminates the need for frequent high-pressure cleaning operations, significantly reducing maintenance time and effort while still achieving complete sediment removal when necessary.
3Productivity
If the flow gap increases towards the center of the filter disc, then groundwater flow is facilitated, but the inlet area becomes a critical zone for sediment deposition
Solution Approach 1:
The invention introduces recesses specifically in the corner regions of the flow gap inlet area, creating localized turbulent flow zones. This local modification addresses the sediment deposition problem in the critical inlet area without altering the overall increasing flow gap design that facilitates groundwater flow throughout the filter disc.
Solution Approach 2:
The recesses generate turbulent flow (fluid mechanical vibration) in the flow gap inlet area, creating fluctuating flow patterns that prevent sediment accumulation. This turbulence occurs precisely where the flow gap increases towards the center, allowing the design to maintain both high groundwater flow rates and resistance to sediment deposition.
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 design significantly prolongs the intervals between cleaning and maintenance, reducing the effort required for well filter segments and improving their profitability by maintaining higher filtration efficiency.
Implementation Method 1
Both the technical teaching of claim 1 and that of claim 2 generate a turbulent flow in the area of the flow gap inlet. Due to the turbulent flow, impurities transported with the water inlet are swirled around so that they cannot accumulate in the critical flow gap inlet due to the correspondingly higher speed of the turbulent flow.
Implementation Method 2
a nozzle with flows at subsonic speeds increases the speed within the nozzle and reduces the static pressure there according to Bernoulli's teaching causes
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Disclosed is a filter disc for a well filter segment, in which a plurality of filter discs are arranged concentrically over each other in a spaced manner, wherein the filter disc is configured as a circular ring and in which the outer circumferential edge of the circular ring is longer than the inner circumferential edge so that there is flow gap increasing up to the centre of the filter disc between two filter discs arranged over each other, wherein, according to the invention, at least one circumferential groove-shaped recess is introduced at least on a flat side of the filter disc in the region of the flow gap inlet that is narrower in the cross-section.