Pivotable Dual-Blade Conveyor Scraper for Reversible Belt Adaptation
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Solution Overview
Problem
Existing conveyor belt scrapers suffer from damage, reduced longevity, and inconsistent performance due to high loads, directional installation requirements, and inability to adapt to changing conditions, leading to costly downtime and inefficiencies in coal or mineral processing.
Innovation Solution
A conveyor belt scraper design featuring a pivot assembly with two scraper blades that can pivot between different positions to maintain optimal scraping angles, allowing for self-alignment and increased durability, and is adaptable to reversible conveyor belts and changing conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional scraper blades are used, then scraping function is provided, but the blades suffer from damage and reduced longevity due to high loads
Solution Approach 1:
The scraper blade is divided into multiple segments or sections that can independently deflect and absorb impact loads. This segmentation allows each section to handle stress separately, preventing catastrophic failure and extending overall blade life.
Solution Approach 2:
The scraper blade incorporates flexible or resilient elements that allow dynamic deflection under load. This dynamic capability enables the blade to absorb impact forces from coal and obstructions, reducing stress concentration and preventing damage while maintaining scraping effectiveness.
2Reliability
If fixed directional scraper blades are installed, then scraping performance is maintained, but the blades cannot be used with reversible conveyor belts
Solution Approach 1:
The scraper blade assembly incorporates pivotable or adjustable mounting mechanisms that allow the blade orientation to change based on belt direction. This dynamic adaptability enables the same blade to function effectively whether the conveyor operates in forward or reverse direction.
Solution Approach 2:
The scraper design is made universal by incorporating features that allow it to function in multiple orientations and directions. The blade can be positioned to scrape effectively regardless of belt travel direction, making it suitable for reversible conveyor systems.
3Strength
If rigid scraper blades are used, then structural strength is maintained, but the blades cannot adapt to changing operational conditions
Solution Approach 1:
The scraper blade incorporates flexible sections or resilient materials that allow the blade to dynamically adjust its position and angle in response to varying operational conditions such as changes in coal flow, belt tension, and speed, while maintaining sufficient structural integrity.
Solution Approach 2:
The blade design allows for changes in physical parameters such as flexibility, stiffness, or mounting angle to be adjusted based on operational requirements. This enables the same blade structure to adapt to different working conditions without sacrificing structural strength.
4Reliability
If scraper blades are replaced frequently, then consistent scraping performance is maintained, but process downtime increases
Solution Approach 1:
The scraper blade is designed as a segmented or modular assembly where individual sections can be replaced independently rather than requiring complete blade replacement. This reduces maintenance time and allows for quicker restoration of consistent scraping performance.
Solution Approach 2:
The blade incorporates wear-resistant flexible elements that maintain consistent scraping performance over extended periods by dynamically adapting to wear patterns, thereby extending replacement intervals and reducing conveyor downtime.
Data Source
AI summary
A conveyor belt scraper (100) comprising a mounting base (110) adapted to be mounted on a support structure. A pivot body 300 is pivotally connected to the mounting base (110). First and second scraper blades (500), are secured to the pivot body (300), wherein a scraping tip (520) of the first scraper blade (500) and a scraping tip (530) of the second scraper blade (500) are separated by a space and the scraping tips (520, 530) each extend generally parallel to a pivot axis of the pivot body (300). The pivot assembly (300) is pivotal about the pivot axis so that a position of each scraper tip (520, 530) is variable.