A full-automatic rapid chemical oxygen demand measuring instrument

The fully automated rapid chemical oxygen demand (COD) analyzer utilizes a multi-functional transfer and detection mechanism, which solves the problems of unstable test tube fixation and complex equipment, thereby achieving automation and precision in COD measurement and improving detection accuracy and efficiency.

CN224365970UActive Publication Date: 2026-06-16NINGBO RANNUO SCI INSTR CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO RANNUO SCI INSTR CO LTD
Filing Date
2026-05-13
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

In the colorimetric detection process, the test tubes of the existing fully automatic rapid chemical oxygen demand analyzer are not fixed stably, which prevents the incident light from passing perpendicularly through the effective optical path of the cuvette, affecting the accuracy and repeatability of absorbance measurement. In addition, the device has a complex structure and is cumbersome to install and debug, making it difficult to guarantee stability and reliability in long-term use.

Method used

A fully automated rapid chemical oxygen demand (COD) analyzer was designed, employing a multi-functional transfer mechanism and a detection mechanism, including an aspiration component, a clamping and opening/closing component, an optical detection device, and a clamping component. This enables automated fixation and precise alignment of test tubes, while multi-axis movement and a flexible clamping structure ensure the stability of the test tubes during the colorimetric detection process.

Benefits of technology

The entire process of chemical oxygen demand (COD) determination has been automated, improving detection accuracy and efficiency, ensuring the stability and repeatability of the optical path for absorbance measurement, reducing human error, and improving the precision of the measured values.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a full -automatic chemical oxygen demand rapid determination appearance, including box, multifunctional transfer mechanism, work area and detection mechanism. Multifunctional transfer mechanism installs in the box, can move along Z axle, Y axle and X axle, including sucking subassembly and clamping open -close subassembly, is used for liquid suction and discharge and test tube uncapping operation. Work area includes reagent placement area, test tube placement area, gun head placement area, waste placement area, heating digestion area, cooling area and cleaning area. Detection mechanism includes shell, seat body, clamping subassembly and optical detection device, and clamping subassembly is used for stabilizing fixed test tube, and optical detection device is used for determining the absorbance of the liquid to be measured in test tube. The clamping subassembly arranged in the detection mechanism guarantees the positioning accuracy of test tube in the detection process, improves the accuracy and the degree of automation of chemical oxygen demand determination.
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