Method and system for testing cleanliness of cleaned packaging container

Abstract

The invention discloses a method and system for testing the cleanliness of a cleaned packaging container. The testing method comprises the following steps: firstly, detecting the concentration of a cleaning agent of a cleaning agent solution before cleaning, then injecting the cleaning agent solution into a cleaned packaging container, so that the cleaning agent solution in the packaging container washes residues on the inner wall of the packaging container, discharging the cleaning agent solution containing the residues in the packaging container, detecting the concentration of the cleaning agent after cleaning of the cleaning agent solution containing the residues, wherein the ratio of the concentration of the cleaning agent before cleaning to the concentration of the cleaning agent after cleaning is the cleanliness of the packaging container. The testing system comprises a solution tank, a liquid chromatograph and a packaging container interior all-directional washing device. According to the invention, the cleanliness of the cleaned packaging container can be effectively detected without placing the detector into the packaging container. The detection cost is reduced, safe operation is facilitated, and the intuition of a detection result is improved.

Description

technical field [0001] The invention relates to a test method and a test system, in particular to a test method and a test system for the cleanliness of a packaging container after cleaning. Background technique [0002] Steel drums and plastic drums are important packaging containers for chemical products. The chemical products contained in the container come from a wide range of sources, have complex components, and are corrosive and toxic. With the development of circular economy, the recycling of chemical packaging containers after cleaning has become a development trend. However, the cleanliness after cleaning is an important indicator to determine whether the cleaning is clean or not. The current wet cleaning is mainly carried out by solvent, and the residue after cleaning still lacks fast and effective detection methods and standards, which affects the healthy development of the packaging container cleaning industry. The fundamental reason is that the packaging con...

AI Technical Summary

Problems solved by technology

The current wet cleaning is mainly cleaned by solvents, and there is still a lack of fast and effective detection methods and standards for residues after cleaning, which affects the healthy development of the packaging container cleaning industry.

The fundamental reason is that the packaging container has a small mouth and a large belly, and the detector cannot be directly inserted into the packaging container to detect the residue. Therefore, there is no method and system for testing the cleanliness of the packaging container after cleaning.

The applicant searched the patent literature, and did not find any method and system for testing the cleanliness of the packaging container after cleaning.

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