Magnetic Valve Spool Rotation via Magnetism
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Solution Overview
Problem
Conventional valves in fluid supply systems face challenges in achieving a good sealing effect while allowing smooth relative rotation between spools, as the use of O-rings increases the difficulty of rotation and can lead to fluid leakage.
Innovation Solution
A magnetic valve design that eliminates the O-ring between the spools, utilizing magnetic forces to control the rotation of the first spool relative to the second spool, with a cover plate O-ring for sealing, allowing smooth rotation and effective fluid control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an O-ring is disposed between the two spools to prevent fluid leakage, then the sealing effect is improved, but the difficulty of relative rotation between the spools increases
Solution Approach 1:
The patent removes the O-ring from between the two spools entirely, extracting the sealing component from the rotating interface. Instead, a magnetic coupling mechanism is used to transmit rotational force without mechanical contact, eliminating the need for sealing at the rotation interface while maintaining sealing elsewhere in the system.
Solution Approach 2:
The patent replaces the mechanical O-ring sealing system with a magnetic field-based transmission system. Magnets are arranged on both spools to create magnetic attraction/repulsion forces that transmit rotational motion without physical contact, substituting mechanical friction and sealing requirements with magnetic field interaction.
2Reliability
If the contact between two spools and the O-ring is made tight to achieve good sealing, then the sealing effect is improved, but the force required for relative rotation increases extremely
Solution Approach 1:
The patent replaces mechanical contact-based force transmission with magnetic field-based force transmission. The magnets create attractive and repulsive forces that can transmit rotational torque without requiring tight mechanical contact, dramatically reducing the force needed for rotation while maintaining effective coupling.
Solution Approach 2:
The patent uses asymmetric magnet arrangements where alternating poles are positioned to create zones of attraction and repulsion. This asymmetric configuration allows controlled rotational movement with minimized resistance, as the magnetic forces are distributed unevenly to facilitate smooth rotation rather than uniform resistance.
3Ease of operation
If the relative rotation between two spools is made smooth by reducing O-ring contact, then the ease of operation is improved, but the sealing effect deteriorates
Solution Approach 1:
The patent extracts the sealing function from the rotating interface between spools. By removing the O-ring from this interface and using magnetic coupling instead, the system achieves smooth rotation without compromising sealing, as the magnetic field provides both the rotational coupling and the sealing barrier.
Solution Approach 2:
The magnetic coupling system serves multiple functions simultaneously: it transmits rotational force between spools, prevents fluid leakage through magnetic sealing, and enables smooth relative rotation. This multi-functional approach replaces the separate mechanical coupling and sealing components with a unified magnetic field-based system.
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 magnetic valve achieves a good sealing effect and smooth rotation of the spools, preventing fluid leakage and effectively controlling the flow rate without the need for O-rings between the spools, enhancing the operational efficiency of the fluid supply system.
Implementation Method 1
a magnetic force of the first magnet and the second magnet drives the first spool to rotate relative to the second spool
Data Source
AI summary
A magnetic valve and a fluid supply system using the same are provided. The fluid supply system includes a flow channel and the magnetic valve. The magnetic valve penetrates through a pipe wall of the flow channel, and includes a driving unit, a first magnet and a second magnet, a cover plate, a first and second spools. A first leaning portion of the first spool is disposed at one end of a first sheath portion. The first sheath portion has a first outlet opening. The second magnet is disposed on a surface of the first leaning portion facing to the cover plate. The second spool sleeves the first spool and has a second outlet opening. The first spool rotates relative to the second spool through a magnetic force to control an overlapping area of the first and second outlet openings, so as to control a flow rate.