Conveyor Scraper Blade Grooves That Prevent Feather Edge Wear
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Solution Overview
Problem
Conveyor scraper blades develop a 'feather edge' due to wear, leading to reduced effectiveness in removing material deposits from conveyor belts, especially when cleaning non-abrasive materials or when the mounting tube is too close to the belt surface, resulting in a lack of sufficient angle of attack.
Innovation Solution
The scraper blade features a blade body with elongated recessed features on its trailing side, such as slots or grooves, which cause the feathered edge to break away as it wears, renewing the cleaning edge and preventing the formation of a thin, ineffective edge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a polyurethane scraper blade is used to remove material deposits from the conveyor belt, then the cleaning effectiveness is improved, but the blade edge becomes thinner and flimsy (feathered) due to wear, reducing its ability to effectively clean the belt
Solution Approach 1:
The blade body is segmented by incorporating a series of elongated recessed features (slots or grooves) that divide the trailing edge into multiple sections. This segmentation allows the feathered edge to break away at these predetermined locations, renewing the cleaning edge and preventing the blade from becoming completely ineffective.
Solution Approach 2:
The recessed features are built into the blade body during manufacturing, creating predetermined breakaway points before the blade is installed. As the blade wears and develops a feathered edge, these pre-positioned recesses guide where the edge will break away, ensuring continuous effective cleaning performance throughout the blade's service life.
2Ease of operation
If the mounting tube is located too close to the belt surface, then the scraper blade can contact the belt, but it does not create a sufficient angle of attack to keep the scraper blade sharp, allowing feather edge formation
Solution Approach 1:
The blade body is segmented by incorporating a series of elongated recessed features (slots or grooves) that divide the trailing edge into multiple sections. This segmentation allows the feathered edge to break away at these predetermined locations, renewing the cleaning edge and preventing the blade from becoming completely ineffective.
Solution Approach 2:
The recessed features are strategically positioned at specific locations along the trailing edge where feathering is most likely to occur. This localized modification creates targeted breakaway points that address the angle of attack problem at the critical areas of the blade edge.
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 design ensures that the scraper blade maintains a renewed cleaning edge throughout its useful life, preventing the formation of a feather edge and maintaining effective cleaning performance.
Implementation Method 1
a feathered edge remnant from wear of the blade body tends to separate from the blade body when wear reaches a recessed feature
Implementation Method 2
a feathered edge remnant from wear of the blade body tends to separate from the blade body when wear reaches a recessed feature
Data Source
AI summary
A scraper blade for a conveyor may comprise: a blade body having a scraping edge and a base for mounting the scraper blade on a blade mount of a conveyor, wherein the blade body has a plurality of elongated recessed features extending across the rearward side thereof, wherein the elongated recessed features are spaced apart and are generally parallel to the scraping edge. Additionally, the base of the blade body may be affixed to a scraper blade mount having a shape of a “flattened W” defining a groove that has beveled edges to provide clearance for a fillet weld of a scraper blade support bar to which the scraper blade is mountable.