A switching device for a glow discharge mass spectrometry ion source chamber

Abstract

This invention provides a switching device for an ion source chamber of glow discharge mass spectrometry, including a lifting eye screw, a wing nut, a fixing pin, a pressure block, and a grooved base. The lifting eye screw and the wing nut are threaded together, the fixing pin passes through the middle section of the lifting eye screw, the pressure block is connected to the ion source chamber cover, and the base is rigidly fixed to the ion source chamber door. By rotating the wing nut, the end of the lifting eye screw is driven to engage with the groove in the base. After tightening, the pressure block is stably pressed against the base, achieving rapid locking of the cover. In a preferred embodiment, the fixing pin is detachable and replaceable, and all components are made of stainless steel. This device has a compact structure and is easy to operate. It utilizes the dual action of threaded self-locking and mechanical snap-fit ​​to ensure sealing stability, while also facilitating maintenance and replacement. It replaces the original spring switch structure without changing the original structure and volume of the ion source chamber, offering a large locking stroke and a high force amplification ratio, thus improving the safety and reliability of the ion source chamber switching device.

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