Vibratory Screen Composite Beams and Panels for Longer Service Life
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Solution Overview
Problem
Conventional vibratory screens suffer from frequent corrosion and fatigue, leading to short longevity and high maintenance costs, especially in liquid separation/dewatering processes, due to their steel or stainless steel construction, which is prone to pitting and corrosion from abrasive and corrosive mineral ores.
Innovation Solution
The invention introduces a protective cover for support beams made of carbon fibre layers with a polymeric shell and deflecting elements, along with side panels composed of carbon fibre and foam layers, to minimize corrosion and fatigue, and a drive member assembly with stress-relieving cut-outs to distribute stress evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel or stainless steel construction is used for support beams, then structural strength is maintained, but corrosion and fatigue occur frequently leading to short longevity
Solution Approach 1:
The support beams are constructed using composite materials consisting of an inner core (steel or stainless steel) and an outer protective layer (polymer or composite material). This composite structure provides both the required structural strength from the inner core and corrosion/fatigue resistance from the outer layer, resolving the contradiction between maintaining strength and improving longevity in corrosive environments
Solution Approach 2:
A protective shell or thin film (polymer coating) is applied to the outer surface of the support beams. This flexible protective layer shields the underlying steel structure from corrosion and fatigue caused by contact with abrasive and corrosive mineral ores, while allowing the inner core to maintain its structural integrity
2Force
If steel construction is used for support beams, then load-bearing capacity is sufficient, but corrosion from abrasive and corrosive mineral ores causes frequent damage
Solution Approach 1:
The support beams utilize a composite material structure where the inner core provides load-bearing capacity through steel or stainless steel, while the outer protective layer (polymer or composite) resists corrosion from abrasive and corrosive mineral ores. This resolves the contradiction by assigning different functional properties to different material layers
Solution Approach 2:
The outer protective layer acts as an intermediary between the corrosive environment (abrasive and corrosive mineral ores) and the inner steel core. This intermediary layer absorbs the harmful effects of corrosion and abrasion, protecting the load-bearing structure from direct contact with damaging substances
3Strength
If conventional steel support beams are used, then structural integrity is maintained, but fatigue from vibrations and impact reduces service life
Solution Approach 1:
The support beams are constructed as composites with an inner steel core that maintains structural integrity under vibration and impact loads, and an outer polymer or composite layer that reduces fatigue by absorbing vibrational energy and preventing stress concentration. This composite approach extends service life while preserving structural integrity
Solution Approach 2:
The outer protective layer serves as a cushioning element that absorbs and distributes impact forces and vibrational stresses before they reach the inner steel core. This beforehand cushioning reduces the transmission of harmful vibrations and impacts, thereby reducing fatigue and extending the service life of the support beams
Data Source
AI summary
The invention provides a vibratory screen (100) with several improvements. A side panel (160) comprises an outer carbon fibre layer (1720), an inner carbon fibre layer (1710) and a foam layer (130) between the inner and outer carbon fibre layers. A support beam (140) comprises an inner core (1420) having at least one carbon fibre layer and an outer polymeric shell (1425) formed on the at least one carbon fibre layer. A protective cover (1800) for the support beam (140) comprises a cover body (1810) and one or more deflecting elements (1820) for deflecting material away from the support beam. Other improvements include a protective plate (200) for the side panels (160) and a driver member assembly (130) having drive beams (400) with an opening (480) to relieve stress.