Pressurized Flush Tank Filter Self-Cleaning Mechanism
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Solution Overview
Problem
Pressurized flush systems for toilets in restricted spaces, such as those on trains, face blockages due to soap and biomass residues in greywater, requiring frequent maintenance and chemical cleaning, which increases costs and complexity.
Innovation Solution
A compact pressurized flush tank with an integrated filter that uses mechanical pressure to break down residues, eliminating the need for chemical agents and simplifying maintenance by integrating filtration and pressure pumping into a single element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an integrated filter is incorporated inside the pressurized flush tank, then blockages from soap and biomass residues are prevented, but the filter requires continuous cleaning due to residue accumulation
Solution Approach 1:
The filter performs self-cleaning through the pressurization process. When the tank is pressurized for flushing, the high-velocity water flow automatically cleans the filter screen, removing accumulated residues without requiring manual disassembly or chemical cleaning agents.
Solution Approach 2:
The filter is cleaned periodically through each pressurization cycle. The repeated pressurization and flushing operations create periodic high-velocity flows that continuously remove residues from the filter, preventing blockages without requiring separate maintenance interventions.
2Ease of repair
If chemical agents are introduced to dissolve residues and clean the filter, then filter cleaning is facilitated, but manufacturing and operational costs increase
Solution Approach 1:
The patent replaces chemical cleaning agents with a mechanical cleaning mechanism. The high-velocity water flow generated during pressurization mechanically removes residues from the filter through hydraulic action, eliminating the need for chemical substances and associated costs.
3Ease of repair
If additional elements are incorporated to enable filter disassembly and cleaning, then filter maintenance is improved, but the volume of elements increases
Solution Approach 1:
The patent merges the filter cleaning function with the existing pressurization and flushing system. The same high-velocity water flow used for flushing the toilet also cleans the filter, combining two functions into one system without requiring separate cleaning mechanisms or additional space.
Solution Approach 2:
The pressurization system serves multiple functions: it provides the flushing action for the toilet and simultaneously cleans the filter. This multi-functionality eliminates the need for dedicated filter cleaning mechanisms, maintaining ease of maintenance while minimizing volume.
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 effectively prevents blockages and reduces maintenance costs by using mechanical pressure to clean the filter, promoting an ecological system and extending filter lifespan without chemical substances.
Implementation Method 1
uses mechanical pressure to break down residues
Implementation Method 2
the pressurized mechanical action, when the compressed air mechanism (4) is activated, provides efficient and sufficient cleaning of the filter (11)
Data Source
Figure 1~2
AI summary
Pressurized flush tank for toilets, for use in mobile restrooms, formed by a hermetic receptacle (2) with at least one connection (3) for compressed air (4), an inlet (5) for clean water (6) and an outlet (7) that couples the flush pipe (8) to the toilet (9), optionally connected to a sewage water tank (19), said compressed air (4) being controlled by means of a manual or automatic actuator (10), where said tank (1) incorporates, housed inside said receptacle (2), a filter (11) incorporated such that the water passes through it under pressure. The filter (11) consists of a screen or sieve with dense netting. Optionally, there is a second inlet (12) for coupling the greywater pipe (13) coming from a washbasin (14) or similar to a second outlet (16), which connects to an overflow and ventilation pipe (17).