An external labyrinth seal device

The external labyrinth seal device solves the oil leakage problem caused by wear of the sealing parts of the transmission equipment, realizes the circulation and return of the lubricating medium and facilitates maintenance, ensures production safety and reduces costs.

CN224414363UActive Publication Date: 2026-06-26HUBEI JIAMAILONG IND TECH CO LTD
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Patent Information

Application Number
CN202521845782.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-28
Publication Date
2026-06-26
Estimated Expiration
2035-08-28

AI Technical Summary

Technical Problem

The sealing parts of existing transmission equipment are prone to wear, leading to oil leaks, which affects production safety and increases costs. Furthermore, replacing the seals requires shutting down and disassembling the equipment, posing potential hazards.

Method used

An external labyrinth sealing device is designed, including a sealing end, an encapsulation component, and a filter component. It is fixed to the outside of the original flange by bolts, enabling online installation and disassembly for easy maintenance. A multi-stage flow guiding structure is used to prevent leakage of lubricating medium.

Benefits of technology

It enables the circulation and return of lubricating medium, preventing leakage, reducing production costs, ensuring equipment safety, and does not require changes to the original structure, making it easy to install and disassemble, and extending the equipment's lifespan.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an external labyrinth seal device, including equipment sealing end, encapsulation subassembly and filter component, the equipment sealing end is provided with original flange, the equipment sealing end is equipped with original seal, the encapsulation subassembly sets up equipment sealing end surface to realize the external connection sealing of equipment sealing end. The utility model, through first positioning locking seal dynamic ring, again through bolt will butt -joint locking split flange, fixed mounting in the original flan of equipment's outside, wherein during installation, can through positioning device auxiliary installation to ensure the concentricity with rotating shaft, adjust good bottom oil return nozzle position, again through bolt directly butt -joint locking seal static ring, locking fixed on split flange, finally, after confirming that installation is correct, will output pipe and the preset oil return pipeline butt -joint intercommunication, and installation can be completed, wherein installation does not need to change the original structure, and is fixed through a plurality of bolts, is convenient for subsequent dismounting maintenance.
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