Screening device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing screening devices fail to effectively separate impurities and aquatic life from wastewater, leading to contamination and potential harm to aquatic life, and require additional mechanisms to prevent impurities from entering discharge troughs with aquatic life.
Innovation Solution
A screening device with adjacently arranged screening elements forming a continuously rotating filter belt, featuring upper and lower deflection mechanisms to separate impurities and aquatic life, and separate collection devices for each, allowing for efficient and protected discharge using a minimal chamber opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single discharge trough is used for both impurities and aquatic life, then the device structure is simplified, but impurities contaminate the aquatic life discharge and additional separation means are required
Solution Approach 1:
The single discharge trough is segmented into two separate collection devices: a first collection device for impurities and a second collection device for aquatic life. This segmentation allows independent collection and discharge of each type of material, ensuring reliable separation while maintaining structural efficiency through the shared deflection mechanism.
2Ease of operation
If the chamber opening is enlarged to facilitate discharge, then the discharge process is improved, but production costs increase
Solution Approach 1:
The discharge process is optimized by utilizing the vertical dimension through the deflection mechanism that redirects the filter belt downward. This allows effective discharge through a minimal chamber opening by exploiting gravitational force and the downward motion of the deflected belt, eliminating the need for enlarged horizontal chamber dimensions.
3Productivity
If aquatic life is discharged through a large chamber opening, then discharge efficiency is improved, but the device size and production cost increase
Solution Approach 1:
The deflection mechanism performs preliminary action by redirecting the filter belt downward before the discharge point. This preliminary deflection allows aquatic life to be gently guided into the second collection device through a minimal chamber opening, maintaining high discharge efficiency without requiring large chamber dimensions.
4Reliability
If additional separation means are added to prevent impurity contamination, then separation reliability is improved, but device complexity increases
Solution Approach 1:
The separation function is merged with the existing deflection mechanism. The same deflection element that redirects the filter belt for discharge also serves as the separation means, directing impurities to the first collection device and aquatic life to the second collection device. This merging eliminates the need for additional separate separation mechanisms.
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 device ensures efficient separation and discharge of impurities and aquatic life with minimal chamber opening, reducing production costs and minimizing harm to aquatic life through gentle handling and reduced fall heights.
Implementation Method 1
The upper deflection mechanism includes a deflection element by means of which the continuous filter belt is picked up on the first side of the screening device and deflected towards the second side of the screening device
Implementation Method 2
the screening elements are moved downwards counter to the vertical direction on a second side of the screening device
Data Source
AI summary
A screening device for removing impurities and aquatic life from flowing wastewater includes: multiple screening elements adjacently arranged along a movement direction and forming a continuously rotating filter belt; an upper deflection mechanism and a lower deflection mechanism, by means of which the continuous filter belt is deflected; at least one first collection device for the impurities; and at least one separate second collection device for the aquatic life, wherein the upper deflection mechanism includes a deflection element, and wherein at least a portion of the at least one first collection device is located in the region of the deflection element and/or underneath the deflection element along a vertical direction. The at least one first collection device and the at least one second collection device are adjacently arranged along a transverse direction.