Split-Spray Belt Scraper Assembly for Uneven Conveyor Wear
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Solution Overview
Problem
Current belt conveyor cleaning technologies struggle with uneven wear rates and difficulty in controlling pre-tension force, leading to inefficient cleaning, increased maintenance, and high energy consumption, especially when handling viscous or wet materials.
Innovation Solution
A belt cleaning device with independently adjustable scraper holders and alloy scrapers, utilizing high-pressure water spraying and tungsten carbide scrapers, along with a clutch mechanism to uniformly control the contact force and angle of scrapers based on belt wear rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional polyurethane or rubber scrapers are used to clean the conveyor belt, then some material residues can be removed, but the scrapers wear accelerates and cleaning efficiency significantly declines
Solution Approach 1:
The patent applies composite materials by combining a rigid support structure with a replaceable scraping element made of wear-resistant material. The scraper assembly includes a holder that can be mounted on the conveyor belt with interchangeable scraping components, allowing the system to maintain high cleaning efficiency while extending overall service life through selective replacement of only the worn scraping elements rather than the entire scraper device.
2Productivity
If multiple scraper devices are added at the discharge end with increased pre-tension force to remove viscous materials, then material removal effect improves, but resistance to belt transportation increases and energy consumption rises
Solution Approach 1:
The patent implements local quality by positioning scraper devices at specific locations along the conveyor belt where material accumulation is most problematic, rather than applying uniform scraping force across the entire belt. The scraper assembly includes adjustable components that can be positioned to target specific areas with viscous or wet materials, optimizing material removal effectiveness while minimizing overall resistance and energy consumption by concentrating cleaning action only where needed.
3Ease of operation
If shims and feeler gauges are used to control pre-tension force of scraper heads, then pre-tension can be adjusted, but control and verification becomes difficult due to uneven wear rate along belt width
Solution Approach 1:
The patent applies self-service through a scraper assembly design that incorporates self-adjusting or self-verifying mechanisms for pre-tension control. The scraper holder includes features such as adjustable positioning elements or indicator mechanisms that allow operators to easily set and verify appropriate pre-tension forces without requiring complex shim stacking or feeler gauge measurements, compensating for uneven wear patterns across the belt width through inherent design features rather than manual measurement procedures.
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
Enhances cleaning efficiency, reduces maintenance needs, adapts to various materials, and decreases energy consumption by uniformly applying force across the belt, ensuring effective removal of residues.
Implementation Method 1
a split-type spraying pipe is configured to spray water onto the material scraping area where the first alloy scraper and the second alloy scraper meet the belt
Implementation Method 2
the first alloy scraper... and the second alloy scraper... uniformly control the contact force between the scraper head and the belt
Data Source
AI summary
A belt cleaning device for a coal loading and unloading belt conveyor, including a split-type spraying pipe, a first alloy scraper, and a second alloy scraper. The first alloy scraper is provided on the belt, the belt is supported by a roller. The second alloy scraper is elastically pushed against an underside of the belt and suspended below the roller. A material scraping area is covered by the split-type spraying pipe, the split-type spraying pipe is configured to spray water onto the material scraping area. The belt cleaning device can independently control the inclination angle of the first alloy scraper and the second alloy scraper and uniformly control the adhesion force between the alloy scrapers and the belt, thus solving the problem of scraping off adhesive materials at different wear rates of the belt, improving the efficiency of the coal loading and unloading belt conveyor, and reducing maintenance needs.