Switchable Magnetic Filter for Tool-Free Particle Release
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Solution Overview
Problem
Current magnetic filtration systems in fluid pumping systems lack the ability to selectively turn off the magnetic field for easy cleaning, requiring complex procedures or tools for removing impurities.
Innovation Solution
A switchable magnetic filter with rotatable or slidable magnets that allow users to easily turn the magnetic field on or off, enabling the release of impurities by switching the magnetic field externally or internally within the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnetic filter is used to attract and collect metallic impurities in a fluid pumping system, then the filtration effectiveness is improved, but the complexity of cleaning and maintenance increases because the magnetic field cannot be turned off
Solution Approach 1:
The patent applies the dynamics principle by making the magnetic field switchable between ON and OFF states. The magnetic filter assembly includes a magnetic field source that can be activated to attract metallic impurities during operation, and deactivated during cleaning to release the impurities. This dynamic switching capability resolves the contradiction by maintaining filtration effectiveness when needed while enabling simple cleaning procedures when maintenance is required.
2Reliability
If a magnetic filter continuously attracts metallic particles during operation, then the fluid purity is improved, but the ease of operation deteriorates due to the need for complex removal procedures
Solution Approach 1:
The patent implements periodic action by alternating between the magnetic field ON state during normal operation to maintain fluid purity, and the OFF state during periodic cleaning intervals. The system operates in cycles: filtration mode for extended periods, followed by brief cleaning cycles where the magnetic field is turned off to release accumulated impurities. This periodic switching resolves the contradiction by maintaining high fluid purity during operation while enabling easy, periodic cleaning without complex procedures.
3Productivity
If the magnetic field is kept on to continuously remove impurities, then the productivity of the filtration system is improved, but the ease of repair and maintenance worsens due to inability to easily release particles
Solution Approach 1:
The patent applies parameter changes by controlling the magnetic field strength parameter through switching it between ON and OFF states. During normal operation, the magnetic field parameter is set to a high value to maximize impurity attraction and maintain high filtration productivity. During maintenance, the magnetic field parameter is changed to zero (OFF state) to release accumulated particles for easy removal. This parameter switching resolves the contradiction by maintaining high productivity during operation while enabling easy maintenance when needed.
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
Facilitates easy and efficient removal of metallic impurities without the need for tools or complex procedures, enhancing system maintenance and operation efficiency.
Implementation Method 1
the magnetic assembly comprising a pair of oppositely disposed substantially semi-cylindrical magnetic portions comprising a north magnet and a south magnet; the magnetic probe inserted within the housing assembly such that the handle may be rotated to an ON position in which in which the north magnet and the south magnet are positioned such that the resulting north-south magnetic field flows outside of the housing and into fluid within the vessel surrounding the outside of the housing, thus attracting the magnetic impurities in the fluid and retaining them against the outer wall of the housing
Implementation Method 2
an OFF position in which in which the north magnet and the south magnet are positioned such that the resulting north-south magnetic field flows through the magnetic portions and is shunted within the probe housing whereby magnetic impurities previously retained against an outer wall of the housing are released
Data Source
AI summary
A switchable magnetic filter for collecting metallic particles in a fluid flowing through a vessel. The switchable magnetic filter includes a housing assembly and a magnetic probe within the housing assembly. The magnetic probe includes a shaft assembly comprising a first shaft portion rotatable with respect to a second shaft portion. The shaft assembly includes a handle at a first end of the shaft assembly and a magnetic assembly at a second end of the shaft assembly. The magnetic assembly creates a north-south magnetic field. The magnetic probe is within the housing assembly such that the handle is rotatable between an ON position and an OFF position. In the ON position, the north-south magnetic field flows outside of the housing, and in the OFF position, the north-south magnetic field is shunted substantially within the housing assembly.