A magnetic mechanical dual combination seal for lithium battery industry

CN224533477UActive Publication Date: 2026-07-21ZHEJIANG WEIZHEN SEALING TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG WEIZHEN SEALING TECH CO LTD
Filing Date
2025-09-23
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing lithium battery casing sealing technologies suffer from problems such as microcracks in the heat-affected zone, material aging and failure, safety risks, and short lifespan of internal bearings, making it difficult to achieve zero leakage, long lifespan, and high safety.

Method used

It adopts a magnetic-mechanical dual-combination sealing structure, including a magnetic drive mechanism and a mechanical seal. It uses magnetic coupling to achieve non-contact transmission, and combines a mechanical seal with a silicon carbide ring and a perfluoroether O-ring to form a double barrier to prevent leakage of the internal medium of the equipment.

Benefits of technology

Under conditions of high pressure, high temperature, high solid content, strong corrosion, and flammability and explosiveness, it achieves absolute zero leakage, extends the sealing life, reduces maintenance costs, and improves safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a magnetic mechanical double combination sealing for lithium battery industry, including frame, be located on the upper end of frame's motor speed reducer and be located at the lower end of frame's stirring shaft, the output of motor speed reducer is driven and is connected stirring shaft through magnetic drive mechanism, is equipped with the isolation sleeve that will equipment inside and outside completely isolate between magnetic drive mechanism and stirring shaft, stirring shaft is supported on the frame through bearing assembly, is equipped with mechanical seal between bearing assembly and equipment internal medium, the utility model discloses through the innovative "magnetic sealing + mechanical sealing " double combination structure, has effectively realized the smooth operation under the working condition of high pressure (4 6Mpa), high temperature (150 280 degrees), high solid content, strong corrosive, inflammable, explosive, and this composite structure prolongs sealing life, avoids the risk of kettle medium leakage, and reduces the processing and maintenance cost, is applicable to the new energy lithium battery industry reation kettle.
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