Scraper apparatus
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Solution Overview
Problem
Existing scraper technologies for aquariums, particularly those with transparent viewing walls, are inefficient in removing algae due to lack of effective mechanical engagement and rotational symmetry, leading to incomplete cleaning and potential scratching of surfaces.
Innovation Solution
A scraper apparatus with a rotatable scraper blade and holder featuring pivot pins, annular ring fasteners, and engagement tabs for positive mechanical engagement, allowing for efficient cleaning and protection of the viewing walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional fixed scraper blade design is used, then the structure is simple, but the cleaning efficiency is low and algae removal is incomplete
Solution Approach 1:
The scraper blade is designed to rotate relative to the holder about a pivot connection, transforming the static blade into a dynamic component. This rotation allows the blade to adapt to surface irregularities and maintain optimal contact pressure, significantly improving algae removal efficiency while the pivot mechanism keeps the overall structure relatively simple
Solution Approach 2:
The scraper assembly is divided into separable components: the holder, the blade, and the pivot connection. This segmentation allows the blade to be replaced independently and enables the rotational movement that enhances cleaning performance without complicating the entire device structure
2Object-affected harmful factors
If a fixed scraper blade is used, then the device is simple to manufacture, but it causes scratching of the viewing walls
Solution Approach 1:
The rotational capability of the blade allows it to conform to the curvature of the aquarium viewing wall, distributing contact pressure more evenly and preventing concentrated stress points that cause scratching. The blade can rotate to follow the surface contour rather than forcing a fixed contact angle
Solution Approach 2:
The pivot connection allows the blade's contact angle and pressure distribution to change dynamically during use. By adjusting the rotation angle, the blade optimizes its contact parameters with the surface, reducing harmful localized stress while maintaining effective algae removal across the entire surface area
3Productivity
If a non-rotatable blade holder connection is used, then the assembly is simple, but the mechanical engagement is insufficient for effective cleaning
Solution Approach 1:
The pivot connection creates a dynamic hinge joint between the blade and holder, enabling rotational movement that enhances mechanical engagement with the surface. This simple hinge mechanism provides the necessary degrees of freedom for effective cleaning without requiring complex actuators or control systems
Solution Approach 2:
The pivot connection acts as an intermediary element between the holder and blade, providing a controlled rotational degree of freedom. This intermediate joint allows the blade to adapt its orientation while maintaining secure mechanical engagement, bridging the simplicity of the holder design with the flexibility needed for effective scraping action
Data Source
AI summary
A scraper apparatus, comprising a scraper blade; a scraper blade holder; wherein the scraper blade and the scraper blade holder are rotatable relative to one another about a pivot connection formable by the scraper blade and the scraper blade holder; wherein the scraper blade has at least one scraper blade fastener; wherein the scraper blade holder has at least one scraper blade holder fastener; and wherein the at least one scraper blade fastener is fastenable with the at least one scraper blade holder fastener via the scraper blade and/or the scraper blade holder being rotated about the pivot connection.