Rotary Drum Magnetic Separator for Coolant Cleanness
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Solution Overview
Problem
Current rotary drum-type magnetic separators require multiple stages and complex configurations to achieve high coolant liquid cleanness, which is costly and inefficient in improving the total amount of suspended solid matters recovered.
Innovation Solution
A rotary drum-type magnetic separator design featuring a second rotary drum with alternating magnetic poles and a scraper system that magnetizes and aggregates fine particles, increasing their size before they are processed by a first rotary drum, enhancing the recovery of magnetic substances and coolant liquid cleanness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple magnetic separation devices are disposed in multiple stages to improve coolant liquid cleanness, then the cleanness of coolant liquid is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The magnetic separation process is segmented into two distinct rotary drums with different functional characteristics. The first rotary drum handles coarse separation with stronger magnetic forces, while the second rotary drum performs fine separation with weaker magnetic forces. This segmentation allows each component to be optimized for its specific function, achieving high cleanness without requiring multiple complete-stage devices.
Solution Approach 2:
The invention adds a dimensional aspect by introducing rotary drums that rotate in opposite directions, creating multiple flow paths and separation zones within a single integrated structure. This dimensional approach allows simultaneous multi-level separation, achieving the effect of multiple stages without proportional increase in device complexity.
2Productivity
If magnets are disposed over the entire outer periphery of the rotary drum to enhance magnetic separation, then the recovery efficiency of magnetic substances is improved, but the device complexity and cost increase
Solution Approach 1:
Magnets are strategically positioned only in specific zones on the rotary drum outer periphery rather than uniformly across the entire surface. The first rotary drum has magnets in its lower portion for strong magnetic attachment, while the second rotary drum has magnets configured for gentler separation. This localized magnet placement optimizes recovery efficiency for each functional zone while reducing overall device complexity and cost.
3Device complexity
If a single rotary drum is used for magnetic separation, then the device complexity is reduced, but the coolant liquid cleanness is insufficient
Solution Approach 1:
Two rotary drums with different magnetic separation characteristics are merged into a single integrated device structure. The first rotary drum with stronger magnetic forces and the second rotary drum with weaker magnetic forces work in sequence within the same housing, sharing common components such as the liquid reservoir and control systems. This merging achieves high cleanness while maintaining relatively simple device complexity.
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 effectively aggregates fine particles into larger particles, improving the recovery efficiency and cleanness of the coolant liquid with a simpler and more cost-effective structure compared to multi-stage systems.
Implementation Method 1
a second rotary drum 21 having a smaller diameter than that of the first rotary drum 13 is disposed before the first rotary drum 13 in a direction in which the used coolant liquid flows. The plurality of magnets 24, 24, ... are disposed on the inner tube 25 such that magnetic poles alternate with each other
Implementation Method 2
In the plurality of magnets 4, 4, ..., in order to magnetically attach cut chips, chips, or the like included in the coolant liquid, magnetic poles are disposed to generate a predetermined magnetic flux on the outer peripheral surface of the rotary drum 3
Implementation Method 3
the cut chips, the chips, or the like are scraped off by a scraper 7 abutting on the rotary drum 3 so as to be recovered
Implementation Method 4
A squeezing roller 6 in which an elastic body such as rubber is disposed on the surface is provided in the vicinity of the top portion of the rotary drum 3 and abuts on the outer peripheral surface of the outer tube 9 of the rotary drum 3 by predetermined pressing. The magnetically attached sludge passes through a portion between the outer tube 9 and the squeezing roller 6, a liquid of the sludge is squeezed out
Data Source
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AI summary
A rotary drum-type magnetic separator is provided in which cleanness of a circulating coolant liquid can be improved by a simple structure. A rotary drum-type magnetic separator includes a first rotary drum 13 on which a plurality of magnets 14, 14, ... are disposed and separates unnecessary objects from a used coolant liquid. A second rotary drum 21 on which a plurality of magnets 24, 24, ... are disposed is provided before the first rotary drum 13 in a direction in which the used coolant liquid flows separately from the first rotary drum 13. The second rotary drum 21 includes an outer tube 29 and an inner tube 25. A scraper 27 which scrapes off the unnecessary objects attached to the second rotary drum 21 is connected to a bottom member 30 which forms a flow path below the first rotary drum 13.