Liquid sampling, metering and detecting device

By using components such as an air pump to regulate air pressure, a sealing piston, and a laser rangefinder in the liquid sampling device, the problem of inaccurate liquid sampling has been solved, achieving accurate measurement and high precision in liquid sampling results.

CN224500041UActive Publication Date: 2026-07-14GANSU PROVINCIAL INST OF METROLOGY
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Patent Information

Application Number
CN202521085404.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-29
Publication Date
2026-07-14
Estimated Expiration
2035-05-29

AI Technical Summary

Technical Problem

Existing liquid sampling and metering devices are not convenient for accurately determining the amount of liquid sampled during quantitative sampling, which can easily lead to deviations in the amount of liquid sampled and affect the accuracy of the test results.

Method used

An air pump is used to regulate the air pressure inside the sampling tube. Combined with a sealed piston, a laser rangefinder, and a sampling indicator buoy, the amount of sampled liquid is calculated by detecting changes in air pressure and position. A deviation distance sensor is used to detect the distance difference. Combined with cleaning pads and sealing films, liquid residue is reduced, ensuring sampling accuracy.

Benefits of technology

It achieves precise measurement of liquid samples, improves the accuracy of test results, reduces liquid residue, and enhances the operational stability and reliability of the sampling device.

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Abstract

The utility model provides a liquid sampling, metering and detecting device, which relates to the technical field of sampling, metering and detecting and comprises a sealing piston, one side of the sealing piston is provided with a laser distance measuring sensor for detecting the position of the sealing piston, and the other side of the sealing piston is provided with a sampling indication buoy made of waterproof materials. The utility model has the advantages that the position of the sealing piston is adjusted by using the change of the air pressure in the sampling tube, and liquid is extracted into the sampling tube by using the air pressure change generated by the movement of the sealing piston, so that the liquid entering the sampling tube drives the sampling indication buoy to move; the laser distance measuring sensor is used for detecting the position of the sealing piston, meanwhile, the deviation distance sensor is used for detecting the distance between the sealing piston and the sampling indication buoy, the difference value between the two distances is calculated, the amount of sampled liquid can be accurately judged, accurate sampling is facilitated, and the precision of a detection result is improved.
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