Modular Magnetic Oil Filtering Plug Design
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Solution Overview
Problem
Existing magnetic drain plugs are ineffective in capturing micron and submicron-sized magnetic particles in lubricating oils due to limited magnetic field exposure and surface area, leading to increased wear and maintenance in mechanical systems.
Innovation Solution
A modular magnetic filtration device with a magnet core, casing, and rods, designed to extend into the lubricant reservoir, featuring a non-magnetic extension spacer and particle collection pockets, which maximizes exposure and capture of magnetic particles, using high-energy product magnets like Neodymium Iron Boron or Samarium Cobalt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a small magnet is fastened on the end or nested inside a drain plug, then the device structure is simple, but the magnetic field exposure and surface area are limited, resulting in poor particle capture effectiveness
Solution Approach 1:
The patent implements a nested structure where a magnet core is placed inside a magnet casing, and magnetic rods are arranged around the magnet casing. This nested arrangement maximizes the magnetic field generation within the constrained space of the drain plug, thereby improving particle capture effectiveness without significantly complicating the manufacturing process.
Solution Approach 2:
The patent extends the magnetic field into the third dimension by having the magnet core and magnetic rods extend beyond the flat surface of the drain plug into the lubricant reservoir. This dimensional extension increases the surface area and volume of magnetic field exposure, allowing for more effective capture of magnetic particles circulating in the lubricant.
2Volume of moving object
If the magnet does not extend far into the liquid reservoir, then the device structure is compact, but the exposure to lubricant entraining magnetic particles is limited
Solution Approach 1:
The nested arrangement of the magnet core inside the magnet casing allows the magnetic components to be compact while still extending into the lubricant reservoir. The magnetic rods are arranged around the magnet casing in a space-efficient manner, maximizing the magnetic field exposure area without significantly increasing the overall device volume.
Solution Approach 2:
The patent utilizes the radial dimension by arranging magnetic rods around the magnet casing, extending the magnetic field exposure area in multiple directions simultaneously. This allows the device to maintain a compact volume while achieving extensive surface area exposure to the lubricant flow.
3Device complexity
If the plug cannot hold onto magnetic particles during high flow rate operation, then the device structure is simple, but the particle retention capability is poor
Solution Approach 1:
The patent segments the magnetic field generation into multiple components: a magnet core inside the magnet casing and multiple magnetic rods arranged around the magnet casing. This segmentation creates multiple magnetic field zones that work together to capture and hold particles, providing redundant retention capability without requiring a complex mechanical retention mechanism.
Solution Approach 2:
The patent combines the magnetic field generation functions of the magnet core and magnetic rods into a unified system. The magnet core provides a strong central magnetic field, while the surrounding magnetic rods extend the field radially, creating a comprehensive magnetic trap that effectively holds particles during high flow rate operation.
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 device effectively captures and retains magnetic particles, reducing wear and maintenance by increasing the magnetic field exposure and surface area within the lubricant reservoir, allowing for efficient removal during maintenance.
Implementation Method 1
the magnet core and the one or more magnetic rods are configured to generate a magnetic field
Implementation Method 2
The magnetic field generated by the magnet core and the one or more magnetic rods attracts and retains magnetic particles on an outer surface of the magnet casing
Data Source
AI summary
A magnetic filtration device for installing as a replacement to a standard drain plug commonly positioned at the bottom of the reservoir. The magnetic filtration device may attract and capture magnetic (ferromagnetic) particulate circulating throughout a mechanical system. Applications for the device include engines, motors, pumps, compressors, gear boxes, transmissions, hydraulic systems, and generators. The magnetic filtration device may comprise a magnet core enclosed within a magnet casing, with additional magnetic rods affixed to and/or arranged around the magnet casing.