Vibrating Screen With Upward Orifices for Filiform Particle Rinsing
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Solution Overview
Problem
Existing screening devices for solid granular materials rich in filiform particles, such as metal waste, face issues with clogging due to the twisted shape of filiform particles, which prevents effective separation and leads to high labor costs and discontinuous rinsing processes.
Innovation Solution
A vibrating screen with a perforated plate inclined at an angle of 1 to 10°, featuring projections with orifices facing upwards, allows the solid granular material to rise while the aqueous phase flows countercurrently, preventing accumulation and clogging, and enabling efficient drainage and rinsing of fine particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional screen with orifices is used for screening solid granular material rich in filiform particles, then particle separation can be achieved, but the screen becomes clogged by twisted filiform particles accumulating on the screen cloth
Solution Approach 1:
The patent inverts the conventional screen design by positioning the orifices on projections that face upwards rather than downwards. This reversal prevents filiform particles from entering and clogging the orifices, as the upward-facing orientation allows particles to roll off rather than penetrate into the openings.
Solution Approach 2:
The patent introduces a vertical dimension to the orifice orientation by creating projections that extend upward from the screen surface. This dimensional change transforms the orifice from a two-dimensional opening in a flat screen to a three-dimensional upward-facing feature, fundamentally altering particle interaction with the screen.
2Manufacturing precision
If the screen is inclined at a steep angle (≥20°) to ensure correct separation of particles, then separation efficiency improves, but filiform materials accumulate at the level of the orifices causing clogging
Solution Approach 1:
The patent creates an asymmetric configuration where the screen surface has a gentle inclination angle (1-10°) rather than the steep angle (≥20°) used in conventional screens. This asymmetric, gentle slope prevents filiform particle accumulation while maintaining separation efficiency through the upward-facing orifices on projections.
3Reliability
If the screen inclination is reduced to prevent filiform particle accumulation, then clogging is minimized, but particle separation efficiency decreases
Solution Approach 1:
The patent compensates for the reduced inclination angle by inverting the orifice orientation on upward-facing projections. This inversion ensures that particles still effectively engage with the screening surface and are separated efficiently, even on a gentler slope that prevents filiform particle accumulation.
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 configuration reduces clogging, allows for the successful drainage and rinsing of particles from 3 mm to 300 mm in size, increasing process yield by minimizing losses and labor costs, and enables optimal rinsing of both upper and lower parts of the granular material.
Implementation Method 1
a first vibrating screen comprising a perforated plate of orifices... Under the effect of the vibration, the finer particles pass through the screen
Implementation Method 2
an outlet of said aqueous phase charged with fine particles by gravity, under said first vibrating screen
Implementation Method 3
said plate perforated with orifices has projections directed from the face of said perforated plate receiving said solid granular material rich in filiform particles upwards... allowing the solid granular material to rise while the aqueous phase flows countercurrently
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
Device for rinsing and draining a solid granular material rich in wire-like particles (6) and loaded with fine particles comprising: a first upward-sloping vibrating screen (1), a feed (5) of said solid granular material rich in wire-like particles (6) loaded with fine particles arranged in order to feed said solid granular material rich in wire-like particles (6) to the top portion of said first vibrating screen (1), at least one feed of an aqueous phase (7) in order to remove said fine particles by entrainment, an outlet of said drained solid granular material rich in wire-like particles (6) arranged for the recovery (14) of said solid granular material rich in wire-like particles (6) at said bottom portion (4), and, an outlet of said aqueous phase loaded with fine particles via gravity, under said first vibrating screen (1) and the process thereof.