Elastic Scraper Blade Scalloped Surface Mining Wear
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Solution Overview
Problem
Conveyor belt scraper blades in mining applications face challenges in effectively removing residue and preventing wear and damage due to the abrasive and dynamic nature of materials, especially in high dust environments like coal mining, where residue buildup leads to excessive wear and potential fires.
Innovation Solution
A replaceable conveyor scraping blade with a flexible and elastic body, featuring a base portion, an arcuate intermediate portion with scalloped surfaces, and a terminal end, designed to be biased against the conveyor belt by a tensioning device, providing consistent pressure and wear indication, and allowing deflection for reduced resistance and extended useful life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scraper blades are made rigid to maintain consistent contact pressure, then cleaning effectiveness is improved, but wear resistance and operational life deteriorate due to abrasive materials
Solution Approach 1:
The patent changes the material parameter from rigid to flexible/elastic, allowing the blade to deflect and absorb wear while maintaining consistent contact pressure through elastic recovery, thereby extending operational life while preserving cleaning effectiveness
Solution Approach 2:
The patent employs composite construction with a flexible/elastic blade body material combined with a tensioning device, creating a system that leverages both flexibility for wear resistance and elastic properties for consistent contact force maintenance
2Duration of action of stationary object
If scraper blades are made flexible to reduce wear, then operational life is improved, but contact pressure consistency deteriorates
Solution Approach 1:
The patent utilizes elastic material properties to ensure that the blade returns to its original shape after deflection, automatically restoring consistent contact pressure with the conveyor belt throughout the blade's operational life
Solution Approach 2:
The elastic blade body serves itself by automatically compensating for wear and maintaining contact pressure through elastic recovery, eliminating the need for external adjustment mechanisms
3Ease of manufacture
If conventional rigid scraper blades are used, then manufacturing simplicity is maintained, but wear resistance and economic efficiency deteriorate
Solution Approach 1:
The patent changes the material parameter to flexible/elastic which inherently provides wear resistance through deflection and elastic recovery, reducing material loss and extending blade life while remaining economically viable
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 solution effectively removes residue from conveyor belts, reduces wear on pulleys and rollers, and prevents fires by maintaining consistent contact and wear indication, enhancing economic efficiency and safety in mining operations.
Implementation Method 1
The blade body comprises a base portion, generally arcuate intermediate portion, and a terminal end... produced from a material having a flexible and/or elastic quality... The base portion is attachable to a tensioning device which biases the blade body against a conveyor belt
Implementation Method 2
The intermediate portion comprises a first surface extending upwardly relative to the base portion and a second surface opposite the first surface... The second surface also extends upwardly relative to the base portion and has a scalloped surface when viewed in cross-section extending lengthwise along the longitudinal axis
Data Source
AI summary
A replaceable conveyor scraping blade has a blade body extending lengthwise along a longitudinal axis. The blade body is produced from a material having a flexible, elastic quality. The blade body comprises a base portion, and intermediate portion, and a terminal end. The base portion is attachable to a tensioning device for biasing the blade body against a conveyor belt. The intermediate portion is generally arcuate and comprises a leading surface and a trailing surface. The leading surface extends upwardly relative to the base portion. The trailing surface is opposite the leading surface. It also extends upwardly relative to the base portion and has a scalloped surface when viewed in cross-section extending lengthwise along the longitudinal axis. The terminal end has a scraping surface separating an uppermost portion of the trailing surface from an uppermost portion of the leading surface.