A solid phase extraction flow rate measuring device

By combining a flow rate sensor and a self-adjusting component inside the tank, the flow rate of the solid phase extraction device can be automatically and accurately measured and controlled, solving the problems of inaccurate flow rate adjustment and lack of alarms in the existing technology, and improving experimental efficiency and convenience.

CN224480492UActive Publication Date: 2026-07-10GUANGXI ZHUANG AUTONOMOUS REGION ECOLOGICAL ENVIRONMENT MONITORING CENT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGXI ZHUANG AUTONOMOUS REGION ECOLOGICAL ENVIRONMENT MONITORING CENT
Filing Date
2025-08-25
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing solid phase extraction devices require multiple manual adjustments to the flow rate when loading large sample volumes, making it impossible to accurately and automatically measure and control the flow rate. Furthermore, they lack alarm prompts indicating that the sample solution is exhausted, resulting in low experimental efficiency.

Method used

It combines a tank, a transparent box, a funnel cover, a vertical pipe, a flow rate sensor, a liquid discharge pipe, an energy storage control low-liquidity alarm component, and a flow rate self-adjustment component. The flow rate sensor detects the low-liquidity level in real time, and the PLC controller controls the servo motor to adjust the flow rate. Combined with an audible and visual alarm, it alerts the operator when the solution is depleted.

Benefits of technology

It enables automated and precise measurement and control of flow rate, avoiding the phenomenon of liquid-solid extraction column being filled quickly or delaying experimental time, and automatically alarms when the solution is used up, thus improving experimental efficiency and convenience.

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Abstract

This invention discloses a solid-phase extraction flow rate measuring device, including a sample solution flow rate measuring device that cooperates with a liquid-solid extraction column. The sample solution flow rate measuring device includes a container filled with sample solution, and an outlet is integrally provided at the bottom of the container, connected to and fixed with a transparent box. This invention, through a series of structural features, facilitates automatic adjustment of the sample loading flow rate according to requirements, and alerts personnel during adjustment, eliminating the need for multiple manual adjustments and judgments. This improves the automation, accuracy, and ease of use. Furthermore, by detecting and automatically adjusting the flow rate, it can accurately and automatically measure and control the flow rate, avoiding the phenomenon of rapid filling of the liquid-solid extraction column due to high flow rates or delays in experimental time due to slow flow rates. Finally, it can automatically alarm to remind personnel when the sample solution in the container is used up, facilitating replenishment and further improving the effectiveness of the application.
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Citation Information

Patent Citations

  • Liquid storage device for solid-phase extraction

    CN220047142U