Cladding assembly and cladding film adapted to the structure of a hollow flue

By designing a covering component adapted to the structure of the air pipe, the problems of jamming and air leakage caused by deformation of the air pipe during the testing process were solved, achieving stable clamping and effective testing.

CN224539474UActive Publication Date: 2026-07-24CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
Filing Date
2025-07-21
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies are unable to effectively detect the suction resistance and ventilation parameters of the air pipe structure because the air pipe is prone to deformation during the testing process, leading to jamming or air leakage. Traditional testing devices cannot adapt to its deformation characteristics.

Method used

Design a coating component adapted to the structure of an empty smoke tube, including a main body, a through hole and a coating film. The lower part of the through hole is cylindrical and the upper part is flared. The shape of the coating film is adapted to the through hole and the empty smoke tube is fixed by a negative pressure channel to ensure that it passes through the test smoothly.

Benefits of technology

It achieves stable clamping and detection of the air pipe, avoiding jamming or air leakage, and ensuring the effectiveness of suction resistance and ventilation parameter detection.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224539474U_ABST
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Abstract

The utility model provides a kind of cladding assembly and cladding film of adaptive empty smoke pipe structure, including main part, through-hole, negative pressure passage and cladding film;The through-hole is shaped in the axial direction of main part and penetrates main part;The lower part of the through-hole is filter tip section, and the contour shape is set as cylindrical;The upper part of the through-hole is set empty cylinder section, and the contour shape is set as horn mouth shape of wide on top and narrow on bottom;The cladding film is the cylinder of the circular ring rib with both ends, the overall shape of the cladding film is adapted to the shape of the through-hole, both ends of the cladding film are fixed on the main part of the both ends of through-hole, and closed cavity is formed between the cladding film and the inner wall of through-hole;The negative pressure passage is opened on the side wall of main part corresponding filter tip section, and the negative pressure passage is communicated with the closed cavity.This cladding assembly and cladding film of adaptive empty smoke pipe structure have the advantages of good universality, can adapt to empty smoke pipe deformation, and have high clamping stability.
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