An automated polyurethane production apparatus

By combining online near-infrared sensors and optical probes with a viscosity monitoring mechanism, the problem of automated measurement of NCO value, moisture content and viscosity in polyurethane production has been solved, realizing real-time and accurate monitoring of the polyurethane production process and improving product quality and production efficiency.

CN224541735UActive Publication Date: 2026-07-24ZHONGLU JIAOKE TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGLU JIAOKE TECHNOLOGY CO LTD
Filing Date
2025-07-24
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In current polyurethane production processes, the testing of NCO value, moisture content, and viscosity mainly relies on manual methods. This results in long testing times, potential sample damage and the introduction of impurities, and makes it difficult to achieve real-time and accurate monitoring, thus affecting product quality.

Method used

By employing an online near-infrared sensor and optical probe combined with a viscosity monitoring mechanism, the system achieves automated measurement of NCO value, moisture content, and viscosity. The NCO concentration and moisture content are detected through infrared light absorption, and the viscosity monitoring mechanism adjusts the rotor speed in real time to accurately monitor viscosity changes. Combined with a stirring assembly and temperature control system, the system ensures uniform reaction.

Benefits of technology

It enables real-time and precise monitoring of the polyurethane production process, reduces human interference, improves product quality stability and production efficiency, and avoids performance differences caused by uneven local reactions.

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Abstract

The utility model relates to the technical field of polyurethane production, especially to an automatic polyurethane production equipment, the on -line near infrared sensor and optical probe are installed in cauldron body, and the optical probe is on the path of infrared light that on -line near infrared sensor sends, the viscosity monitoring mechanism is installed in cauldron body, can automatic measurement NCO value, moisture content and viscosity index, improve the polyurethane production quality.
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