High-voltage resistant anti-rotation switch with magnetic coupling

By employing non-contact magnetic coupling transmission and a multi-seal structure, the problem of reduced sealing performance and unstable transmission of traditional rotary paddle switches under high-pressure conditions has been solved, enabling stable material level detection and extended equipment lifespan under high-pressure conditions.

CN122245988APending Publication Date: 2026-06-19上海硕豪传感器有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
上海硕豪传感器有限公司
Filing Date
2026-04-27
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Traditional rotary paddle switches are prone to problems such as decreased sealing performance, media leakage, wear of transmission components, vibration and noise, and shortened service life under high pressure, dusty and corrosive conditions. Existing magnetic coupling structures are insufficient in terms of pressure resistance and dust protection.

Method used

It adopts a non-contact magnetic coupling transmission structure, combined with multiple sealing designs and directional purging, including annular sealing grooves, flange seals, wire harness sealing sleeves, dustproof oil seals and inclined purging holes, forming a fully enclosed pressure-resistant inner cavity. High-precision bearings are used for dual-point support to ensure transmission stability and dustproof effect.

Benefits of technology

It completely solves the problem of medium leakage under high pressure conditions, improves transmission stability and equipment life, reduces failure rate, and is suitable for material level detection needs in various industrial scenarios.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a magnetically coupled, high-pressure resistant rotary switch, belonging to the technical field of material level detection equipment. Specifically, it comprises a housing cover, a housing, a connecting thread, a drive shaft, a magnet assembly, bearings, a dustproof oil seal, an output shaft, a purge hole, and a wiring inlet. The housing cover is sealed to the top of the housing, forming a sealed, pressure-resistant inner cavity. The drive shaft is vertically mounted inside the housing cavity, and multiple sets of bearings are fixedly fitted around its outer circumference, supporting the drive shaft. The connecting thread is fixedly connected to the bottom of the housing. This invention, by employing a non-contact magnetic coupling transmission structure, eliminates the through-type dynamic sealing structure of traditional rotary switches, fundamentally solving the problem of media leakage under high-pressure conditions. The overall structure is rationally designed, easy to install and maintain, and adaptable to the material level detection needs of various industrial scenarios, possessing good practicality and promotional value.
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