Filter Insert With Low Elongation Sheet for Water Treatment
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Solution Overview
Problem
Existing water treatment devices face inefficiencies due to the loss of water treatment agents during handling and replacement, as particles escape through the material of the bags, especially when dry or comminuted, reducing the device's effectiveness.
Innovation Solution
A filter insert with a wall made from a water-permeable sheet-like structure having an elongation at break of less than 100%, specifically using elastic and/or flexible fabrics with a lattice-like structure, made from materials like ABS, PET, and fixed threads to minimize opening enlargement and particle loss, and featuring a handle for easier handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If bags made of flexible fabric are used to store water treatment agent, then handling is simplified and replacement is easier, but particles escape through the material especially when dry or comminuted
Solution Approach 1:
The patent changes the key parameter of fabric elasticity by specifying an elongation at break of less than 100%, preferably less than 50%, and particularly preferably less than 25%. This parameter change transforms the fabric from overly flexible (causing particle loss) to sufficiently rigid (preventing particle escape while maintaining ease of handling).
Solution Approach 2:
The patent applies different fabric properties to different parts of the filter insert. The wall material has low elongation to prevent particle escape, while a separate grip element with higher elongation (at least 100%, preferably at least 200%) is added to maintain ease of handling during installation and replacement.
2Ease of operation
If fabric with high elasticity is used, then ease of handling is improved, but openings in the fabric enlarge and allow particle escape
Solution Approach 1:
The patent directly addresses opening size stability by controlling the elongation at break parameter of the fabric to be less than 100%, preferably less than 50%, and particularly preferably less than 25%. This ensures openings remain stable during handling while still allowing sufficient flexibility for installation.
3Reliability
If bulk material is used as water treatment agent, then filtering effectiveness is maintained, but handling and replacement become complicated and time-consuming
Solution Approach 1:
The patent segments the water treatment system into a reusable filter insert (housing structure) and replaceable components (fabric wall with agent, or cartridges). This segmentation allows the bulk material agent to be contained in pre-assembled units that are quick to install and replace, dramatically reducing replacement time while maintaining filtering effectiveness.
Solution Approach 2:
The patent employs disposable or easily replaceable fabric walls and cartridges that contain the bulk material agent. These consumable components are designed for single-use or limited-use cycles, allowing rapid replacement without handling loose bulk material, thus reducing replacement time while preserving agent effectiveness during its service life.
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 significantly reduces the loss of water treatment agents during handling and replacement, maintaining the device's effectiveness by minimizing particle escape and optimizing flow, while being cost-effective and suitable for water treatment applications.
Implementation Method 1
the fabric has an elongation at break εR < 100%, preferably εR < 50%, and particularly preferably εR < 25%
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention relates to a filter insert (10) for a water treatment device with a wall (20) made of at least one water-permeable sheet (12), wherein the wall (20) defines an internal volume V in which a water treatment agent is arranged. To improve the effectiveness of water treatment devices, it is provided that the sheet (12) has an elongation at break εR < 100%.