Pivotable Scraper Lamella for Belt Impurity Removal
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Solution Overview
Problem
Conveyor belt scraper systems face challenges in distinguishing between stubborn dirt and belt irregularities, leading to complex and expensive designs, with difficulties in safely and reliably removing dirt without damaging the belt, especially when encountering large obstacles.
Innovation Solution
A device with a lamella support pivotable about a first axis and a scraper lamella pivotable about a second axis, featuring a coupling element that transmits spring force via a rotatable projection, allowing the scraper lamella to rest on the belt for peeling off small impurities while releasing from large obstacles, and simplifying the structure by eliminating a second spring device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a purely mechanical scraper system is used to remove dirt from the conveyor belt, then the scraping function is simple, but it cannot distinguish between stubborn dirt and belt irregularities, leading to belt damage
Solution Approach 1:
The scraper lamella is made dynamically responsive through spring elements that allow it to adapt its position based on the nature of the obstacle encountered. The spring-mounted scraper can deflect over belt irregularities while maintaining scraping pressure on stubborn dirt, enabling automatic differentiation without complex sensors or controls.
2Reliability
If multiple spring devices are used to prestress the scraper lamella for optimal contact, then dirt removal effectiveness is improved, but the device structure becomes complex and expensive
Solution Approach 1:
Multiple spring devices are replaced by a single spring element that acts on the lamella support. This single spring provides the necessary prestressing force for optimal scraper-belt contact while eliminating the complexity of multiple separate spring mechanisms, reducing both structural complexity and cost.
Solution Approach 2:
The single spring element serves multiple functions simultaneously: it prestresses the scraper lamella for effective dirt removal, allows the scraper to deflect over obstacles, and maintains optimal contact pressure. This multi-functional design replaces what would otherwise require multiple specialized components.
3Speed
If the scraper lamella is made to swivel back quickly after encountering large obstacles, then the response time is improved, but the scraper may hit the belt at high speed and cause damage
Solution Approach 1:
The spring element acts as a cushioning mechanism that absorbs and dissipates the kinetic energy of the returning scraper lamella. As the spring compresses during the return motion, it gradually decelerates the scraper, preventing high-speed impact on the belt while still enabling quick response to obstacles.
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
Ensures safe and reliable dirt removal from conveyor belts, avoiding damage to the belt by uniformly detaching the scraper from obstacles and quickly returning to the belt without causing harm, while simplifying the device's structure and optimizing spring force transmission.
Implementation Method 1
a spring element which prestresses the scraper lamella in the direction of the belt webbing
Implementation Method 2
at least one coupling element arranged on one of the first arm and the second arm of the scraper lamella which couples the scraper lamella to the spring device
Data Source
Figure 1
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AI summary
The invention relates to a device for stripping impurities of a belt webbing from conveyor belt systems, comprising at least one lamella support (4) disposed pivotally about a first axis (A1) on a system carrier (3), at least one stripping lamella (6) disposed pivotally about a second axis (A2) on the lamella support (4), said stripping lamella having a first arm (8) facing the belt webbing (2) and a second arm (9) facing away from the belt webbing (2), and at least one spring device (10) associated with the first axis (A1) having at least one spring element (11), which prestresses the stripping lamella (6) in the direction of the belt webbing (2) such that the stripping lamella (6) rests with the first arm (8) against the belt webbing (2) in a stripping position, and wherein on one of the first arm (8) and the second arm (9) of the stripping lamella (6) at least one coupling element (12) is arranged, which couples the stripping lamella (6) to the spring device (10).