Conveyor-Belt Filtration With Solid Collection at the Lower Deflection
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Solution Overview
Problem
Conventional conveyor-belt filtering devices are prone to damage and operational disturbances due to the accumulation of foreign solids like sand and stones, which can cause mechanical stress and lead to a shutdown, especially during heavy rainfalls, resulting in unfiltered liquid discharge.
Innovation Solution
The device incorporates an endless filtering belt with both filtering elements to retain contaminants and collecting elements to gather foreign solids, allowing for their separation and discharge, along with a flexible bottom seal to prevent liquid bypass and a wiper apparatus to remove adhering solids, ensuring continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional conveyor-belt filtering devices are used to clean liquid, then solids can be retained by filtering elements, but foreign solids accumulate in the lower deflection apparatus causing damage and operational disturbances
Solution Approach 1:
The filtering belt is divided into functionally distinct segments: filtering elements for retaining solids and collecting elements for gathering foreign solids. This segmentation allows each segment to perform its specific function independently, preventing foreign solids from damaging the lower deflection apparatus while maintaining reliable operation.
Solution Approach 2:
Collecting elements act as intermediary components between the liquid flow and the lower deflection apparatus. These elements collect foreign solids (sand, stones, pebbles) from the liquid, serving as a buffer that prevents direct contact between harmful foreign solids and the vulnerable lower deflection apparatus, thereby protecting against damage and operational disturbances.
2Reliability
If the bottom seal makes contact with the endless filtering belt to prevent liquid bypass, then filtering efficiency is improved, but the seal becomes burdened by foreign solids causing increased stress and potential failure
Solution Approach 1:
The harmful foreign solids are extracted from the system by the collecting elements before they can accumulate on the bottom seal. By removing sand, stones, and pebbles from the liquid flow in the lower deflection apparatus area, the bottom seal is protected from becoming burdened, maintaining both sealing reliability and structural strength.
Solution Approach 2:
The collecting elements perform preliminary action by gathering foreign solids from the liquid before the liquid reaches the bottom seal area. This preliminary collection prevents foreign solids from accumulating on the seal, thereby preventing increased stress and potential failure while maintaining effective sealing.
3Productivity
If filtering elements are used to retain solids, then liquid cleaning is achieved, but foreign solids cause the filtering elements to pass under increasing duress leading to damage
Solution Approach 1:
The filtering belt is segmented into filtering elements for solid retention and collecting elements for foreign solid collection. This segmentation protects the filtering elements from the harmful effects of foreign solids, maintaining both liquid cleaning efficiency and filtering element durability.
Solution Approach 2:
Collecting elements serve as intermediary components that collect foreign solids from the liquid, preventing direct interaction between harmful foreign solids and the filtering elements. This intermediary function maintains filtering element durability while preserving liquid cleaning efficiency.
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
This design effectively prevents damage and maintains continuous operation by collecting and discharging foreign solids, ensuring reliable liquid cleaning even under heavy contamination conditions.
Implementation Method 1
filtering elements, which is designed to retain solids present in and contaminating the liquid
Implementation Method 2
collecting elements, which is designed for collecting foreign solids, in particular sand, stones, pebbles or the like, which are present in the liquid
Implementation Method 3
a wiper apparatus preferably realized as a rotating brush, for example, is provided which removes filter material adhering to the filtering elements from the filtering elements in a wiping process
Data Source
AI summary
A conveyor-belt filtering device includes an endless filtering belt, which has at least one filtering element, a frame, a lower deflection apparatus and at least one upper deflection apparatus. The endless filtering belt has at least one collecting element, which is adapted for collecting foreign solids, in particular sand, stones, pebbles or the like, which are present in the liquid, in particular in an area of the lower deflection apparatus.