Magnetic Screen With Movable Bars For Food Industry
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Solution Overview
Problem
Existing magnetic separation devices are complex and expensive to manufacture, difficult to clean, and often lack sufficient magnetic strength and hygiene standards, especially in the food industry, where they are prone to blockages and uneven wear, and require unsafe adjustments to optimize gap settings.
Innovation Solution
A magnetic screen with independently movable bars supported by a base, allowing for adjustable apertures and easy cleaning, featuring a cantilevered design with elongated slots for bar movement and a tray for collected material, enabling safe and efficient magnetic separation and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic bars are closely spaced to maximize magnetic separation efficiency, then magnetic separation efficiency is improved, but product blockage increases
Solution Approach 1:
The magnetic bars are made independently movable along the flow direction through elongated slots in the base, allowing the aperture between bars to be dynamically adjusted. This enables optimization between magnetic separation efficiency (when bars are close) and product blockage prevention (when aperture is sufficient), resolving the contradiction by making the system adaptable to different operating conditions
2Device complexity
If magnetic bars are fixed in position to simplify structure, then device complexity is reduced, but adaptability to different product characteristics is worsened
Solution Approach 1:
Each magnetic bar is segmented as an independent movable unit within its own elongated slot, rather than being part of a fixed rigid structure. This segmentation allows individual bars to be adjusted independently, providing adaptability to different product characteristics while keeping the overall structure relatively simple
Solution Approach 2:
The bars transition from a fixed static configuration to a dynamic adjustable configuration through the elongated slots, enabling the aperture to be modified according to varying product characteristics and lump sizes without complex mechanisms
3Strength
If bars are supported at both ends attached to frame to provide structural stability, then structural strength is improved, but cleaning difficulty increases
Solution Approach 1:
The bar support structure is segmented into a base with elongated slots rather than a continuous frame, allowing bars to be moved independently for cleaning purposes while maintaining structural support during operation
Solution Approach 2:
The bars can be dynamically repositioned within their slots to access cleaning positions, transitioning from a fixed supported state to a movable state that enables easy cleaning, then returning to the supported state for operation
4Reliability
If powerful magnets are used to maximize magnetic strength, then magnetic separation efficiency is improved, but bar adjustment safety is worsened
Solution Approach 1:
The bars are designed to be independently movable within elongated slots, allowing for safe adjustment of aperture size without requiring complete removal or unscrewing of the powerful magnets. This dynamic adjustment capability maintains magnetic strength while improving operational safety
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
The solution simplifies manufacturing, enhances magnetic separation efficiency, improves hygiene, and allows for safe and efficient cleaning, addressing the challenges of blockages and uneven wear while meeting modern food-grade standards.
Implementation Method 1
a plurality of magnetic bars mounted on the base so as to be supported thereby, the bars being generally parallel and transversely spaced so as to provide an aperture between each adjacent pair of bars... steel items, in the material passing through the screen, are removed by being attracted to the bars
Data Source
AI summary
A magnetic screen assembly (13). The assembly (13) is to be located in a duct (10) to screen a flowable substance passing in a direction (11). The assembly (13) has a screening position (A) so that the substance passes through the screen, and a cleaning position (B) at which the screen assembly (13) is spaced outwardly relative to the housing (12) to facilitate cleaning of the assembly (13).