Wastewater Screen with Vertical Guide for Damage-Free Maintenance
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Solution Overview
Problem
Existing wastewater-lifting systems face challenges in easily accessing and maintaining the separating screen due to its fragile design and cumbersome installation/removal processes, particularly when the screen is heavy and requires alignment with flanges or side-based attachment.
Innovation Solution
The system incorporates an inner-side linear guide in the bulky material-collecting tank for the separating screen, allowing it to be plugged and pulled vertically, using gravitational forces for simple installation and removal, eliminating the need for flange alignment and reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the separating screen is made heavy-duty for durability, then reliability is improved, but ease of operation deteriorates due to difficult installation and removal
Solution Approach 1:
The separating screen is divided into multiple individual bars that can be independently removed and cleaned, rather than a single large rigid screen. This segmentation allows maintenance personnel to access and clean each bar separately, significantly improving ease of operation while maintaining the structural integrity and durability of the overall screen assembly.
Solution Approach 2:
The separating screen bars are designed to be movable and adjustable within the tank, allowing them to be easily inserted, removed, and repositioned. This dynamic design enables quick maintenance operations without requiring complete disassembly of the tank, thus improving ease of operation while the bars themselves remain robust and durable.
2Manufacturing precision
If the separating screen is made fragile for fine filtration, then manufacturing precision is improved, but reliability deteriorates due to damage during operation and installation
Solution Approach 1:
The screen is segmented into multiple thin bars with precise spacing, achieving fine filtration capability through the precise manufacturing of each individual bar and its spacing. This segmentation allows each bar to be manufactured with high precision for optimal filtration while the modular structure prevents catastrophic failure if one bar is damaged.
Solution Approach 2:
The design changes the parameters of the screen structure by using multiple thin bars instead of a single thick screen. This allows the spacing between bars to be precisely controlled for fine filtration while each individual bar remains thin and less prone to breaking during handling and installation.
3Ease of operation
If side-based attachment is used for screen installation, then ease of operation is improved for accessibility, but device complexity increases due to flange alignment requirements
Solution Approach 1:
The separating screen bars are designed to be completely extractable from the tank through removable end portions. This extraction capability allows maintenance personnel to access and remove individual bars from the side of the tank without requiring complex alignment mechanisms, thereby improving ease of operation while reducing device complexity.
Solution Approach 2:
Instead of fixing the screen rigidly to the tank walls with complex flange alignment mechanisms, the design inverts the approach by making the screen bars removable and reinsertable. This inversion simplifies the attachment mechanism while maintaining side accessibility for maintenance operations.
4Reliability
If bulky material-collecting tank is equipped with heavy separating screen, then separation effectiveness is improved, but loss of time increases due to cumbersome installation and removal
Solution Approach 1:
The heavy-duty separating screen is segmented into multiple individual bars that can be quickly removed and cleaned separately. This segmentation reduces maintenance time significantly compared to removing and cleaning a single large heavy screen, while the cumulative effect of multiple bars maintains or improves separation effectiveness.
Solution Approach 2:
The separating screen system is designed with dynamic, movable bars that can be easily inserted and removed from the tank. This dynamic design reduces the time required for maintenance operations while the bars themselves are sufficiently robust to maintain effective separation of solids from wastewater during operation.
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
Facilitates easy and damage-free installation and maintenance of the separating screen, enhancing operational efficiency and reducing maintenance time.
Implementation Method 1
using gravitational forces for simple installation and removal
Data Source
AI summary
A wastewater-lifting system includes at least one bulky material-collection tank with at least one separating screen arranged in its interior for retaining bulky materials in wastewater loaded with bulky materials passing through the bulky material-collection tank. The system also includes at least one pump connected to the bulky material collection tank via at least one connection line. The separating screen may be removed from and reinserted into the bulky material collection tank predominantly vertically through a closable opening, guided by an inner guide in the bulky material collection tank.