Rotating Drum Magnetic Separator Slit Clogging Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing rotating-drum type magnetic separators face issues with slit clogging due to nonmagnetic particles larger than the opening width, leading to decreased recovery rates and increased maintenance efforts.
Innovation Solution
A device with a slit cleaning member that moves along the longitudinal direction of the slit-like opening, utilizing a cylindrical groove cam mechanism or manual operation to prevent clogging, allowing for continuous operation without separate power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the slit-like opening is cleaned manually at fixed intervals, then clogging is removed, but work efficiency in the entire process is decreased due to troublesome maintenance work
Solution Approach 1:
The opening cleaning mechanism enables the system to clean itself automatically without requiring external manual intervention, transforming a maintenance task into a self-performed function that maintains reliability while preserving productivity
Solution Approach 2:
The cleaning mechanism operates continuously or periodically to maintain the opening clear, ensuring that the useful action of particle recovery continues without interruption by maintenance activities
2Productivity
If magnets are disposed on approximately 3/4 of the outer circumferential surface of the rotating drum, then sludge is effectively adsorbed and transported, but the portion without magnets cannot process particles requiring magnetic force
Solution Approach 1:
Different portions of the rotating drum are assigned different functions: the magnet-equipped portion (3/4) handles sludge adsorption and transport, while the magnet-free portion (1/4) handles particle release and cleaning, with each portion optimized for its specific task
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 effectively suppresses slit clogging, maintaining high recovery rates of ground particles and reducing maintenance burdens by ensuring the slit remains clear of accumulated particles.
Implementation Method 1
Polarities of the plurality of magnets 4, 4, ... are disposed so as to generate a predetermined magnetic flux in the vicinity of the outer circumference surface of the rotating drum 3, so that scrap, chips, or the like which are magnetic bodies contained in the coolant liquid are magnetically attached
Implementation Method 2
the sludge is scratched away by a scraper 7 abutting on the rotating drum 3 and is recovered
Implementation Method 3
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 of the rotating drum 3, and the squeezing roller 6 is abutted on the outer circumference surface of the rotating drum 3 by a predetermined pressing force
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A device for suppressing slit clogging capable of maintaining recovery rates of ground particles without clogging of the ground particles in an opening is provided. The device for suppressing slit clogging is used in a rotating-drum type magnetic separator 1 which includes a rotating drum 3 on which a plurality of magnets 4 are disposed and separates unnecessary matters in treated coolant liquid. A slit-like opening 8 is provided below the rotating drum 3, and the device includes a cylindrical groove cam mechanism, which is configured by a cylindrical shaft 21 having a groove which can be rotated and a slit cleaning member 22 which engages with the groove, below the opening 8. The slit cleaning member 22 moves along a longitudinal direction of the opening 8.