Drain Filter Air Passage Resolves Clogging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drain filters face inefficiencies in blocking foreign substances and managing air flow during drainage, leading to reduced drainage performance and clogging issues.
Innovation Solution
A drain filter assembly with a screen filter and an air communication hole, along with an extension air passage that extends vertically from the screen filter, allowing air to pass while blocking foreign substances, which enhances the flow rate and drainage efficiency by equalizing air pressure and minimizing interference between liquid and air flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screen filter blocks foreign substances through small pore sizes, then filtration effectiveness is improved, but air flow is restricted and drainage efficiency deteriorates
Solution Approach 1:
The filter structure is segmented into two distinct functional zones: multiple small-pore filter holes for foreign substance removal and a large-diameter air communication hole for air flow. This segmentation allows each zone to optimize its specific function without interfering with the other, resolving the contradiction between filtration effectiveness and drainage efficiency
Solution Approach 2:
Different regions of the filter have different pore sizes tailored to their specific functions. The filter holes have small pore sizes (0.2-5mm) optimized for blocking foreign substances, while the air communication hole has a large diameter (5-20mm) optimized for air flow. This local quality differentiation enables simultaneous optimization of both filtration and drainage performance
2Ease of operation
If air flow is restricted during drainage, then liquid flow control is improved, but air pressure equalization is delayed and clogging increases
Solution Approach 1:
The air communication hole acts as an intermediary pathway that facilitates air flow independently of liquid flow. By providing this separate air passage, the system achieves air pressure equalization without disrupting liquid flow control, thereby preventing clogging while maintaining operational control
3Reliability
If the filter holes have small pore sizes for better filtration, then foreign substance blocking is improved, but the flow rate through the filter decreases
Solution Approach 1:
The invention merges two flow pathways into a single filter structure: liquid flow through small-pore filter holes and air flow through a large-diameter air communication hole. This combination allows the system to achieve both high filtration effectiveness and high overall flow rate by utilizing both liquid and air phases to drive drainage
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 solution increases the flow rate through the filter by allowing air to communicate through the air passage, improving drainage efficiency and preventing clogging by washing away floating residues, thus enhancing the overall drainage capacity.
Implementation Method 1
allowing air to communicate through the air passage, improving drainage efficiency by equalizing air pressure
Implementation Method 2
block foreign substances in liquid while the liquid passes through the screen filter
Implementation Method 3
communicate air between the first aperture and the second aperture
Data Source
AI summary
A drain filter assembly includes a screen filter that is configured to be installed at a drain and that is configured to block foreign substances in liquid while the liquid passes therethrough. The screen filter includes: a plurality of filter holes configured to allow passage of the liquid into the drain, where each of the plurality of filter holes has a pore size that is less than sizes of the foreign substances; and an air communication hole configured to allow passage of air the liquid passes through the plurality of filter holes. A diameter of the air communication hole is greater than the pore size of each of the plurality of filter holes.