Dustproof transmission structure

By designing a multi-layered dustproof mechanism in the transmission structure and using centrifugal force to store dust, the problem of bearing wear and leakage caused by dust intrusion is solved, and the stable operation of the transmission shaft and the noise reduction effect are achieved.

CN224533089UActive Publication Date: 2026-07-21GUANGDONG OUGUAN INTELLIGENT FAN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG OUGUAN INTELLIGENT FAN CO LTD
Filing Date
2025-09-12
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Dust particles can enter the bearing cavity through the sealed gaps, causing friction and wear of the bearing balls/raceways, excessive temperature rise, increased noise, and leakage. Existing technologies are not effective in preventing dust intrusion.

Method used

A dustproof transmission structure was designed. By setting multiple radial grooves and axial gaps on the transmission shaft, centrifugal force is used to store dust. Combined with the gap between the skeleton oil seal and the inner and outer flanges, a multi-layer dustproof mechanism is formed to prevent dust from entering the bearing module.

Benefits of technology

It effectively reduces the probability of dust entering the bearing, reduces wear and leakage, ensures the normal rotation of the drive shaft and reduces noise, and improves the reliability and lifespan of the equipment.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224533089U_ABST
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Abstract

The utility model relates to a blower fan technical field especially, it relates to a dustproof transmission structure, including volute, volute is installed transmission shaft, volute forms transmission hole, transmission hole outer end surface is installed with dust baffle, dust baffle is installed with outer flange plate, transmission shaft sleeve is equipped with with dust baffle radial alignment outer shaft sleeve, outer shaft sleeve front end surface forms first radial slot, and outer shaft sleeve has first axial gap with dust baffle between, transmission hole is still installed with inner flange plate, and inner flange plate inner ring wall is installed with skeleton oil seal, transmission shaft will produce centrifugal force when rotating, these centrifugal force will throw dust to the slot structure of first axial gap, is used for storing dust, to reduce dust continues to flow to the amount of inside, even if there is trace dust continues to enter, the second radial gap formed between skeleton oil seal and inner flange plate and outer flange plate will continue to store dust, further reduce dust continues to flow to the amount of inside, prevent bearing module and wear and tear because of dust invasion.
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