Dual-Drum Magnetic Separator for Higher Sludge Recovery
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Solution Overview
Problem
Current magnetic separators face challenges in achieving high recovery rates of magnetic sludge from liquids, particularly due to inefficiencies in magnetization and separation processes.
Innovation Solution
The magnetic separator design incorporates a main drum for discharging magnetized sludge and a sub-drum upstream for magnetizing magnetic sludge, with flow paths above and below the sub-drum to enhance magnetization and attraction, improving recovery efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a sub-drum is added upstream of the main drum to magnetize magnetic sludge, then the recovery rate of magnetic sludge is improved, but the device complexity increases
Solution Approach 1:
The magnetic separation process is divided into two distinct stages: a first stage using the sub-drum for magnetizing magnetic sludge particles, and a second stage using the main drum for collecting the magnetized aggregates. This segmentation allows each drum to perform its specific function optimally, improving overall recovery rate while maintaining manageable system complexity through functional decomposition.
Solution Approach 2:
The sub-drum performs preliminary magnetization of magnetic sludge particles before they reach the main drum. By pre-magnetizing the particles in the upstream position, the main drum can more efficiently collect and recover the already-magnetized aggregates, thereby improving the overall recovery rate without requiring the main drum to perform the magnetization function.
2Reliability
If flow paths are provided above and below the sub-drum, then the magnetization effect is enhanced, but the device complexity increases
Solution Approach 1:
The flow paths are configured to pass through multiple dimensions relative to the sub-drum, with one flow path above and another below the drum. This multi-dimensional flow arrangement enhances the magnetization effect by exposing magnetic sludge particles to the magnetic field from multiple directions and positions, improving reliability without requiring complex internal drum structures.
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 configuration significantly increases the recovery rate of magnetic sludge by forming larger magnetized aggregates, which are more easily attracted and separated, resulting in a recovery rate about 1.5 times higher than traditional systems without a sub-drum.
Implementation Method 1
a sub-drum which is disposed on the upstream side of the main drum and magnetizes the magnetic sludge in the liquid to be treated to form magnetized aggregates
Implementation Method 2
a main drum which discharges the magnetic sludge to the outside of a liquid to be treated
Data Source
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AI summary
An object of the present invention is to improve a recovery rate in a magnetic separator provided with a main drum which discharges magnetic sludge to the outside of a liquid to be treated, and a sub-drum which is disposed on the upstream side of the main drum and magnetizes the magnetic sludge in the liquid to be treated. In order to achieve the above object, a magnetic separator includes: a main drum (2) which discharges magnetic sludge to the outside of a liquid to be treated; and a sub-drum (3) which is disposed on the upstream side of the main drum (2) and magnetizes the magnetic sludge in the liquid to be treated, in which the sub-drum (3) is disposed in a state of being immersed in the liquid to be treated, an upper flow path (13) through which the liquid to be treated flows is formed above the sub-drum (3), and a lower flow path (14) through which the liquid to be treated flows is formed below the sub-drum (3).