Vacuum Valve Magnetic Coupling to Prevent Particle Generation
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Solution Overview
Problem
Existing vacuum valves face challenges in avoiding the generation of particles during the release and refastening of closing members from and to the valve rod, particularly when using screw connections.
Innovation Solution
The use of a releasable connecting device with a fastening magnet that removably fastens the closing member to the valve rod via magnetic attraction forces, thereby avoiding particle generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a screw connection is used to fasten the closing member to the valve rod, then the closing member can be removably fastened, but particles are generated during screwing and unscrewing operations
Solution Approach 1:
The patent replaces the mechanical screw connection system with a magnetic field-based fastening system. The valve rod is equipped with a magnet that magnetically attracts and holds the closing member, eliminating the need for mechanical screwing and unscrewing operations that generate particles. This substitution maintains removable fastening capability while eliminating particle generation.
2Object-generated harmful factors
If a magnetic fastening system is used, then particle generation is avoided, but the force required to overcome magnetic attraction for removal increases
Solution Approach 1:
The patent introduces a release device that segments the magnetic fastening system into two functional parts: a strong magnetic attraction for holding the closing member during operation, and a controlled release mechanism for easy removal. The release device includes a release element that can be actuated to overcome the magnetic attraction force, allowing the closing member to be removed with minimal force while maintaining strong fastening during normal use.
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
This solution effectively minimizes particle generation during the attachment and detachment of the closing member, while also providing a simple and efficient method for fastening and removing the closing member from the valve rod.
Implementation Method 1
the releasable connecting device comprises a fastening magnet for removably fastening the closing member to the valve rod by means of magnetic attraction forces
Data Source
AI summary
A valve (1), in particular a vacuum valve, with a valve housing (2) and a closing member (3) for closing a valve opening (4), and with a valve drive (5) for moving the closing member (3) to and fro between a closed position, in which the closing member (3) closes the valve opening (4), and an open position, in which the closing member (3) fully or partially opens the valve opening (4), wherein the closing member (3) is connected to the valve drive (5) by means of a valve rod (6) of the valve (1), and the closing member (3) is removably fastened or fastenable to the valve rod (6) by means of a releasable connecting device (7), wherein the releasable connecting device (7) has a fastening magnet (8) for removably fastening the closing member (3) to the valve rod (6) by means of magnetic attraction forces.