Magnetic Drum Assembly With Holder-Locked Circumferential Magnets
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Solution Overview
Problem
The assembly of magnetic drums with circumferentially disposed magnets is hindered by strong repulsive or attractive forces, leading to magnet movement and potential changes in magnet disposition, which can impair the design magnetic flux density.
Innovation Solution
Engaging magnets with a holder using recessed and protrusion portions, such as grooves and dovetail fittings, to prevent circumferential movement and ensure stable magnet placement, allowing for easy assembly and maintaining the design function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If magnets are disposed with same poles facing each other to increase magnetic flux density, then magnetic separation performance is improved, but strong repulsive force makes assembly difficult and magnets may move
Solution Approach 1:
The holder is divided into multiple holder parts, each holding one or more magnets. This segmentation allows magnets to be assembled in smaller groups rather than all at once, making the assembly process more manageable despite the repulsive forces between magnets with same poles facing each other.
Solution Approach 2:
Magnets are pre-assembled onto holder parts before the final assembly of the magnetic drum. This preliminary action allows the magnets to be secured in their correct positions with same poles facing each other, ensuring the desired magnetic flux density configuration is established before the holder parts are combined.
2Manufacturing precision
If magnets are disposed with same poles facing each other to increase magnetic flux density, then magnetic separation performance is improved, but magnet disposition may change after assembly
Solution Approach 1:
Multiple holder parts with magnets are merged together to form the complete magnetic drum. This merging process creates a stable, integrated structure where the magnets are firmly positioned relative to each other, preventing any displacement that would alter the designed magnetic flux density configuration.
Solution Approach 2:
The holder parts serve as intermediary structures between the magnets and the final assembled magnetic drum. These holder parts provide a stable mounting platform that maintains the precise disposition of magnets with same poles facing each other, ensuring the designed magnetic flux density is preserved during and after assembly.
3Manufacturing precision
If strong repulsive force between magnets is utilized to increase outward magnetic flux, then separation of weak magnetic particles is improved, but assembly work is hindered
Solution Approach 1:
The magnetic drum assembly is segmented into multiple holder parts, each containing a subset of magnets. This segmentation reduces the number of magnets that need to be assembled simultaneously, making the assembly operation feasible despite the repulsive forces between magnets with same poles facing each other.
Solution Approach 2:
Magnets are pre-assembled onto holder parts in a controlled manner before the final assembly. This preliminary action allows operators to work with fewer magnets at a time, reducing the difficulty of assembly operations while still achieving the desired configuration with same poles facing each other for increased outward magnetic flux.
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 solution effectively suppresses magnet movement during assembly and post-assembly, ensuring the magnetic drum's design function is maintained, facilitating efficient separation of magnetic materials from coolant liquids.
Implementation Method 1
the magnetic fluxes between the two magnets adjacent to each other repel each other, and most of the magnetic fluxes come out in a radial direction (outward direction)
Data Source
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AI summary
An object of the present invention is to suppress the movement of a magnet at the time of assembly in a magnetic drum and a magnetic separation device in which a plurality of magnets are disposed in a circumferential direction, and to easily assemble the magnetic drum. Further, an object of the present invention is to suppress a change in the disposition of the magnets so as not to impair the design function of the magnetic drum, in the magnetic drum after the assembly. In order to achieve the above objects, there are provided a magnetic drum in which a plurality of magnets are mounted along a circumferential direction on a holder, the magnets are disposed such that magnetic pole surfaces face each other along the circumferential direction on the holder, and the magnets are engaged with the holder so as not to move in the circumferential direction, and a magnetic separation device provided with the magnetic drum.