Automatic real-time sampling pretreatment system for liquid sample

Abstract

The utility model relates to an automatic real-time sampling pretreatment system for a liquid sample, which comprises an injection pump capable of extracting and injecting the liquid sample, and a multi-way valve connected with the injection pump, the liquid pipeline is communicated with the injection pump through switching among other ports of the multi-way valve, so that online sampling and automatic detection are realized, automatic detection can be carried out according to a preset time table or detection requirements without manual adjustment, the workload of operators is reduced, and the detection efficiency is improved. And the risks of detection errors and missing detection caused by human factors can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of liquid detection, and specifically to the technical field of an automatic real-time sampling and pretreatment system for liquid samples. Background Art

[0002] In the traditional liquid detection process, especially in the links of tap water, wastewater treatment or industrial production, the analysis of liquid samples usually requires complex pretreatment steps, including but not limited to sample collection, reagent mixing, etc. These pretreatment steps are often completed manually, which is not only time-consuming and laborious, but also prone to human errors, reducing the accuracy and reliability of detection.

[0003] Especially in the scenarios that require continuous monitoring, such as the water quality monitoring of waterworks, the traditional method cannot achieve true real-time online detection. The current practice is usually to take samples manually at regular intervals or triggered by events, and then send the samples to the laboratory for subsequent processing and analysis. This process is not only inefficient, but also difficult to respond to water quality changes in a timely manner, which may delay the discovery and handling of abnormal situations. Summary of the Utility Model

[0004] In view of the limitations of the above-mentioned prior art, the utility model aims to provide an automatic real-time sampling and pretreatment system for liquid samples, which can realize the integrated operation of online sampling, automatic pretreatment and automatic detection to overcome the deficiencies of traditional methods.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An automatic real-time sampling and pretreatment system for liquid samples includes an injection pump capable of extracting and injecting liquid samples, and a multi-way valve connected to the injection pump, with one port of the multi-way valve always communicating with the injection pump;

[0007] It further includes a liquid pipeline and a detection device that communicate with the injection pump through switching with the remaining ports of the multi-way valve.

[0008] Compared with the prior art, this case utilizes the injection pump and the multi-way valve that are always in communication, and through the switching of the other end of the multi-way valve, realizes online sampling and automatic detection. It can perform automatic detection according to the preset schedule or detection requirements without manual adjustment, reducing the workload of operators and avoiding the risks of detection errors and missed detections caused by human factors.

[0009] In some embodiments, the multi-way valve includes a sending-for-test port and a recovery port connected to the detection device, and the sending-for-test port and the recovery port communicate with the injection pump respectively through switching.

[0010] In some embodiments, the multi-way valve further includes a medicine-taking port that communicates with the syringe pump through switching.

[0011] In some embodiments, the multi-way valve further includes a waste liquid port that communicates with the syringe pump through switching.

[0012] In some embodiments, the multi-way valve further includes a spare port that communicates with the syringe pump through switching.

[0013] In some embodiments, the drive of the syringe pump is a stepper motor.

[0014] In a preferred embodiment, the multi-way valve is an electromagnetic multi-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an overall schematic diagram of an automatic real-time sampling and pretreatment system for a liquid sample in this case;

[0016] Figure 2 is a schematic diagram of the sampling state;

[0017] Figure 3 is a schematic diagram of the medicine-taking state;

[0018] Figure 4 is a schematic diagram of the sample delivery and detection state;

[0019] Figure 5 is a schematic diagram of the detection waste liquid recovery state;

[0020] Figure 6 is a schematic diagram of the waste liquid disposal state. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The features of the present invention and other related features are further described in detail below through embodiments for the understanding of those skilled in the same industry:

[0022] Please refer to Figure 1 , an automatic real-time sampling and pretreatment system for a liquid sample of the present invention includes a syringe pump 100 that can extract and inject a liquid sample, a multi-way valve 200 connected to the syringe pump 100. One port of the multi-way valve 200 always communicates with the syringe pump 100, that is, the fixed port of the syringe pump 100 and the multi-way valve 200 is always connected. Port C in the figure is the fixed inlet / outlet connected to the syringe pump 100. The rest are provided with multiple selectively openable or closable ports, and the multi-way valve 200 is opened and closed to communicate with the syringe pump 100, and the operation is performed through the syringe pump 100. Here, the multi-way valve 200 is a controllable multi-way valve system that can realize the automatic control of fluid without manual intervention, preferably an electromagnetic multi-way valve.

[0023] As the remaining ports that can be switched between open and closed to communicate with the injection pump 100, there are at least a sampling port 1 communicating with the liquid pipeline 300 on the production line, a testing port 10 communicating with the detection device 400, and a recovery port 9. The testing port 10 and the recovery port 9 are respectively communicated with the injection pump 100 through switching. In this way, by switching the other end of the multi-way valve 200, on-line sampling and automatic detection can be realized. Automatic detection can be carried out according to the preset schedule or detection requirements without manual adjustment, reducing the workload of the operators and avoiding the risks of detection errors and missed detections caused by human factors at the same time.

[0024] Some liquid samples also need to be pretreated with drugs. For example, when detecting tap water, drugs are added for pretreatment to ensure the accuracy of the detection results. These pretreatment steps can help remove or reduce interfering substances in the water sample and make the components to be detected reach a state suitable for detection. In this regard, the multi-way valve 200 of an automatic real-time sampling pretreatment system for liquid samples in this case further includes a drug-taking port 2 that is communicated with the injection pump 100 through switching with the remaining ports, and the drug-taking port 2 is communicated with the medicine bottle 500. Drugs can be extracted through the drug-taking port 2 after sampling from the sampling port 1. Therefore, it is preferable that the drive of the injection pump 100 is selected as a stepping motor for easy segmented extraction.

[0025] In some embodiments, the multi-way valve 200 further includes a waste liquid port 6, which is also communicated with the injection pump 100 through switching with the remaining ports. In some embodiments, the multi-way valve 200 further includes spare ports. For example, ports 3, 4, 5, 7, and 8 in the legend are spare ports, which are used for connections for different purposes according to requirements.

[0026] The following is described through its working process. For example Figure 2 , is its sampling process. The sampling port 1 is communicated with the liquid pipeline 400 on the production line, and at this time, real-time sampling of the production line liquid can be realized. The multi-way valve 200 opens the sampling port 1, and the injection pump 100 extracts the original sample and reserves space for extracting drugs. Please refer to Figure 3 , next, the multi-way valve 200 closes the sampling port 1 and opens the drug-taking port 2. At this time, the injection pump 100 extracts the medicine, and a mixed sample is formed in the injection pump 100. The mixed sample is a testable sample. Please refer to Figure 4 , the multi-way valve 200 closes the drug-taking port 2 and opens the testing port 10 to enable the mixed sample to enter the detection device 400 for detection. Please refer to Figure 5 , after the detection is completed, the multi-way valve 200 closes the testing port 10 and opens the recovery port 9 to recover the waste liquid after the detection is completed. At this time, the waste liquid after the detection is completed is in the injection pump 100. Please refer to Figure 6, the multi-way valve 200 closes the recovery port 9 and opens the waste liquid port 6, discharging the waste liquid in the syringe pump 100 into the waste liquid tank 600. In this way, the operation of a full detection cycle of real-time sampling, drug addition, detection, and waste disposal can be completed without manual intervention.

[0027] As described above, the present case protects an automatic real-time sampling pretreatment system for liquid samples, and all technical solutions identical or similar to the present case should be regarded as falling within the protection scope of the present case.

Claims

1. A liquid sample automatic real-time sampling pretreatment system, characterized in that: It comprises a syringe pump (100) capable of extracting and injecting a liquid sample, and a multi-way valve (200) connected to the syringe pump (100), wherein one port of the multi-way valve (200) is always connected to the syringe pump (100); It also includes a liquid pipeline (300) and a detection device (400) that are connected to the injection pump (100) by switching between the remaining ports of the multi-way valve (200).

2. The liquid sample automatic real-time sampling pretreatment system according to claim 1, characterized in that: The multi-way valve (200) comprises a test delivery port (10) and a recovery port (9) connected to the detection device (400), and the test delivery port (10) and the recovery port (9) are respectively connected to the injection pump (100) through switching.

3. The liquid sample automatic real-time sampling pretreatment system according to claim 2, characterized in that: The multi-way valve (200) further comprises a waste liquid port (6) which is connected to the injection pump (100) through switching.

4. The liquid sample automatic real-time sampling pretreatment system according to claim 1, characterized in that: The multi-way valve (200) further comprises a medicine taking port (2) which is connected to the injection pump (100) through switching.

5. The liquid sample automatic real-time sampling pretreatment system according to claim 1, characterized in that: The multi-way valve (200) further comprises a spare port which is connected to the injection pump (100) through switching.

6. The liquid sample automatic real-time sampling pretreatment system according to any one of claims 1 to 5, characterized in that: The injection pump (100) is driven by a stepping motor.

7. The liquid sample automatic real-time sampling pretreatment system according to any one of claims 1 to 5, characterized in that: The multi-way valve (200) is an electromagnetic multi-way valve.

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