Dual-Filter Wastewater Separator with Segmented Screens
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Solution Overview
Problem
Existing wastewater treatment devices face issues with clogging and reduced efficiency due to the need for small filter screen holes to prevent solid fraction overflow, leading to increased manufacturing complexity and cost, as well as difficulties in separating finer particulates without clogging.
Innovation Solution
A device with a dual-filter screen system, where a truncoconical second filter screen with larger holes is positioned upstream of a tubular first filter screen, both sharing a single Archimedes screw, allowing for efficient separation of finer particulates without clogging and reducing the device's length and manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the filter screen holes are made smaller to prevent solid fraction overflow, then the separation precision is improved, but the device is more prone to clogging and manufacturing complexity increases
Solution Approach 1:
The filter screen is divided into multiple zones with different hole sizes. The upstream zone has larger holes to prevent clogging and handle coarse solids, while the downstream zone has smaller holes for fine separation. This segmentation allows the device to achieve high separation precision without the entire screen being prone to clogging, thus reducing operational complexity while maintaining manufacturing feasibility.
2Measurement precision
If the filter screen holes are made smaller to prevent solid fraction overflow, then the separation precision is improved, but the device efficiency decreases due to clogging
Solution Approach 1:
The filter screen is divided into multiple zones with different hole sizes. The upstream zone has larger holes to prevent clogging and handle coarse solids, while the downstream zone has smaller holes for fine separation. This segmentation allows the device to achieve high separation precision without the entire screen being prone to clogging, thus reducing operational complexity while maintaining manufacturing feasibility.
3Measurement precision
If two coaxial filter screens are used to improve separation, then the separation precision is improved, but the device length increases and manufacturing complexity increases
Solution Approach 1:
The filter screen is designed as a conical structure with varying hole sizes along its length, nesting the function of multiple screens into a single integrated component. The upstream portion with larger holes and downstream portion with smaller holes are combined in one conical screen, eliminating the need for separate coaxial screens and reducing device length while maintaining multi-stage separation capability.
4Measurement precision
If two coaxial filter screens are used to improve separation, then the separation precision is improved, but the Archimedes screw manufacturing complexity and cost increase
Solution Approach 1:
The filter screen is designed as a conical structure with varying hole sizes along its length, nesting the function of multiple screens into a single integrated component. The upstream portion with larger holes and downstream portion with smaller holes are combined in one conical screen, eliminating the need for separate coaxial screens and reducing device length while maintaining multi-stage separation capability.
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 dual-filter screen system enhances separation efficiency, reduces clogging, and maintains a compact design while allowing for the separation of finer particulates, improving overall wastewater treatment efficiency and reducing operational disadvantages.
Implementation Method 1
an Archimedes screw able to collect the solid fraction, separated by a filter screen located internally of the support frame
Implementation Method 2
a first filter screen so as to intercept the fluid which flows from the inlet mouth to the first outlet mouth and configured such as to retain and accumulate a part of the solid fraction
Data Source
AI summary
A device (10) for separating solids from waste water comprising: a support frame (11) provided with at least an inlet mouth (121), a first outlet mouth (125) of the liquid fraction when separated from the fluid and a second outlet mouth (135) of at least a part of the solid fraction when separated from the fluid; a first filter screen (16) associated to the support frame (11) so as to intercept the fluid which flows from the inlet mouth (121) to the first outlet mouth (125); a second filter screen (18) associated to the support frame (11) so as to intercept the fluid flowing from the inlet mouth (121) to the first outlet mouth (125), located upstream of the first filter screen (16) in an advancement direction of the fluid from the inlet mouth (121) to the first outlet mouth (125); at least an Archimedes screw (15) associated rotatably to the support frame (11) and provided with a first portion (151) and a second portion (152) respectively able to transport the solid fraction accumulated by the first filter screen (16) and by the second filter screen (18) towards the second outlet mouth (135).