Method for quickly judging working condition of ring blow filter element

By collecting and comparing schlieren images of the annular filter cartridge, the problem of not being able to quickly and accurately determine the uniformity of airflow from the annular filter cartridge in existing technologies has been solved. This enables precise determination of the operating condition of the annular filter cartridge and improves the success rate of cartridge installation.

CN122217828APending Publication Date: 2026-06-16JIANGSU HENGLI CHEM FIBER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU HENGLI CHEM FIBER
Filing Date
2026-05-09
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Existing technologies cannot quickly and accurately determine the uniformity of airflow and operating conditions of the ring-blown filter element, resulting in a low success rate of filter element installation.

Method used

By acquiring schlieren images of the circulating filter element, the airflow density change is transformed into a visual image using schlieren imaging technology. The similarity between the schlieren images of the filter element under unknown operating conditions and those under known operating conditions is compared to determine its operating status.

Benefits of technology

It enables effective detection and rapid judgment of the uniformity of airflow from the ring-blown filter element, improving the success rate of filter element installation. It can accurately identify different operating conditions such as non-clogging and undamaged, only clogged, only damaged, and both clogged and damaged.

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Abstract

The present application belongs to the technical field of melt spinning ring blowing filter core detection, and relates to a method for rapidly judging the working condition state of a ring blowing filter core. The schlieren image of a ring blowing filter core with unknown working condition state and the schlieren image of a ring blowing filter core with known working condition state are collected, the schlieren image of the ring blowing filter core with known working condition state that is most similar to the schlieren image of the ring blowing filter core with unknown working condition state is obtained by comparison, and the working condition state of the ring blowing filter core with known working condition state is taken as the working condition state judgment result of the ring blowing filter core with unknown working condition state. The known working condition schlieren image contains the types of no blockage and no damage, only blockage, only damage, and both blockage and damage, and the schlieren image is collected through a specific method. The present application utilizes the principle that the working condition of a filter core affects the uniformity of internal airflow, and the uniformity of airflow can be represented by a schlieren image, thereby realizing the rapid and accurate judgment of the working condition state of a ring blowing filter core and effectively detecting the outflow uniformity of a filter core.
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