Magnetic Self-Centering Valve Reducing Actuation Force
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Solution Overview
Problem
Existing magnetic valves require significant actuation force to open and close, and they lack self-alignment capabilities, which can lead to misalignment and reduced efficiency in controlling fluid or gas flow.
Innovation Solution
A self-aligning magnetic valve with an axially magnetized valve body and gate that utilizes natural magnetic repulsive and restoring forces for easy opening and closing, allowing the valve to align centrally and reduce the required actuation force, with optional mechanical linkage for actuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If traditional magnetic valves are used, then the valve can control fluid flow, but significant actuation force is required to open and close the valve
Solution Approach 1:
The patent replaces the traditional mechanical spring-based closing mechanism with a magnetic field-based closing mechanism. The axially magnetized gate and valve body create magnetic attraction forces that automatically close the valve when actuation force is removed, eliminating the need for mechanical springs and significantly reducing the actuation force required to operate the valve.
Solution Approach 2:
The patent changes the magnetic field configuration by using axially magnetized magnets in both the gate and valve body, arranged to create both magnetic attraction (for closing) and magnetic repulsion (for self-centering). This parameter change in magnetic field orientation and interaction enables the valve to achieve automatic closing with minimal actuation force.
2Manufacturing precision
If traditional magnetic valves are used, then the valve can control fluid flow, but the valve lacks self-alignment capabilities leading to misalignment
Solution Approach 1:
The patent replaces mechanical alignment features (such as alignment pins or precision-machined surfaces) with a magnetic self-centering mechanism. The radially magnetized magnets create magnetic repulsion forces that automatically center the gate within the valve body, achieving precise alignment without complex mechanical alignment features.
Solution Approach 2:
The magnetic field configuration enables the valve to self-align and self-center automatically during operation. The magnetic repulsion forces between the axially magnetized gate and valve body create a restoring force that centers the gate, eliminating the need for external alignment mechanisms or complex mechanical features.
3Ease of operation
If the gate is moved away from the bore to open the valve, then fluid flow is enabled, but friction between the gate and bore resists movement
Solution Approach 1:
The patent replaces mechanical spring forces with magnetic field forces to assist gate movement. The magnetic repulsion forces between the axially magnetized gate and valve body provide a pushing force that assists the gate in moving away from the bore during opening, reducing the net force required to overcome friction.
Solution Approach 2:
The patent changes the magnetic field interaction parameters by using specific magnet orientations (axial magnetization in gate, radial magnetization in valve body) and spacing to create repulsive forces during opening. This parameter optimization reduces the actuation force needed to overcome friction and enable smooth gate movement.
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 self-aligning magnetic valve achieves efficient opening and closing with minimal actuation force, ensuring precise alignment and reduced friction, suitable for small and large sizes, and can handle various fluids and gases without corrosion issues.
Implementation Method 1
A natural magnetic repulsive force between the valve body and the gate facilitates movement of the gate away from the bore when the valve is moved from the closed state to the open state
Implementation Method 2
A natural magnetic restoring force between the valve body and the gate facilitates movement of the gate toward the bore when the valve is moved from the open state to the closed state
Implementation Method 3
The valve body and the gate are configured to self-align along their central axes
Data Source
AI summary
A magnetic valve comprises an axially magnetized valve body comprising a bore and an axially magnetized gate moveable relative to the bore. The gate is dimensioned to cover the bore in a closed state and expose the bore in an open state. The valve body and the gate are configured to self-align along their central axes.