Liquid phase sampler for chemical test

Abstract

The utility model relates to the technical field of sampling devices for chemical tests, in particular to a liquid phase sampler for chemical tests, which comprises a protective tube, two ends of the protective tube are hollow, one end of the protective tube is provided with external threads, and the other end of the protective tube is provided with a finger blocking plate. The sampling mechanism is used for extracting liquid; the sampling mechanism comprises a screwing cover, an internal thread matched with the external thread is arranged on the inner wall of the screwing cover, and a plurality of extraction pipes and liquid storage pipes which are distributed in the circumferential direction are arranged on the screwing cover; through the arrangement of a plurality of extraction pipes, liquid storage pipes and extraction rods, the sampler does not need to be replaced during sampling, so that the time for replacing the sampler is saved, the sampler does not need to be replaced during a liquid dropping experiment, an experimenter can concentrate on observing the reaction process in an experimental apparatus, recording of complete experimental data is facilitated, and the experimental efficiency is improved. The recording error is further reduced, the accuracy of experimental data is improved, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical test sampling devices, specifically a liquid phase sampler for chemical tests. Background Technology

[0002] Chemical experimental operations specifically refer to the handling, storage, connection, assembly, and washing of reagents in the laboratory. It mainly introduces the principles and procedures that must be followed during the operation. In specific experiments, these procedures should be strictly followed to prevent accidents or errors from occurring.

[0003] Liquid sampling devices are frequently used in chemical experiments. The most common sampling device is the syringe, which is easy to operate and use. However, chemical experiments are quite complex. In practice, to avoid the influence of different liquids drawn by the same sampler on the experimental results, experimenters need to use multiple samplers to draw different liquids. During the experiment, in order to obtain experimental data from different liquid concentrations, experimenters need to change the sampler multiple times. During the changing process, the experimenter's attention is briefly distracted, making it difficult to observe the complete experimental process, which in turn affects the recording of experimental data.

[0004] Therefore, we propose a liquid phase sampler for chemical experiments. Utility Model Content

[0005] One of the technical problems this application aims to solve is that during experiments, in order to obtain experimental data from liquids of different concentrations, the experimenters need to change the sampler multiple times. During the changing process, the experimenters' attention is briefly distracted, making it difficult to observe the complete experimental process, which in turn affects the recording of experimental data.

[0006] To address the aforementioned technical problems, this application provides a liquid phase sampler for chemical experiments, comprising a protective tube with open ends, one end of which has an external thread and the other end has a stop plate; it also includes a sampling mechanism for extracting liquid; the sampling mechanism includes a screw cap with an internal thread adapted to the external thread on its inner wall, and a plurality of extraction tubes and storage tubes distributed circumferentially on the screw cap, with through holes corresponding to the extraction tubes and storage tubes on the screw cap; the extraction tubes and storage tubes are interconnected, and the storage tubes are located inside the protective tube.

[0007] In some embodiments, a tapered tube is provided on the extraction tube, the tapered tube covering the through hole of the screw cap.

[0008] In some embodiments, the liquid storage tube is provided with a connecting extraction rod and a rubber piston inside. The rubber piston is attached to the inner wall of the liquid storage tube and can slide on the inner wall of the liquid storage tube. An operating plate is provided at the end of the extraction rod away from the rubber piston. The rubber piston is provided with a conical surface adapted to the conical inner wall of the conical tube.

[0009] In some embodiments, a milliliter line corresponding to the liquid storage tube is provided on the outer surface of the protective tube, and the protective tube is made of colorless and transparent plastic.

[0010] In some embodiments, a plurality of evenly distributed anti-slip strips are provided on the outer surface of the screw cap.

[0011] In some embodiments, a sealing gasket is provided on the inner wall of the screw cap, and the sealing gasket can be fitted to the end face of the protective tube.

[0012] In some embodiments, a fixing plate is provided on the rubber piston, a screw hole is provided on the fixing plate, and a screw connector that mates with the screw hole is provided at the end of the extraction rod.

[0013] This utility model has at least the following beneficial effects:

[0014] 1. By setting up multiple extraction tubes, liquid storage tubes and extraction rods, it is possible to avoid changing the sampler during sampling, which saves the time spent changing the sampler. It also eliminates the need to change the sampler during droplet experiments, allowing the experimenter to focus on observing the reaction process inside the experimental equipment. This is conducive to the recording of complete experimental data, further reducing recording errors and improving the accuracy of experimental data. It is highly practical.

[0015] 2. By providing a threaded connector at the end of the extraction rod that mates with the threaded hole, it is easy to disassemble the rubber piston that is severely worn or deformed and cannot be used properly. This facilitates the replacement of easily damaged parts in the device, allows the main body of the device to be used for a long time without damage, extends its service life, reduces operating costs, saves resources, and improves practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure after the protective tube has been disassembled;

[0018] Figure 3 for Figure 2 Axonometric three-dimensional structural schematic diagram;

[0019] Figure 4 This is a schematic diagram of the disassembled sampling mechanism;

[0020] Figure 5 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0021] In the diagram: 1. Protective tube; 101. Sampling mechanism; 2. Milliliter line; 3. Finger stop plate; 4. Screw cap; 5. Anti-slip strip; 6. Extraction tube; 7. Conical tube; 8. Liquid storage tube; 9. Extraction rod; 10. Operating panel; 11. External thread; 12. Internal thread; 13. Sealing gasket; 14. Rubber piston; 15. Conical surface; 16. Fixing plate; 17. Screw hole; 18. Screw connector. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1:

[0024] Please see Figures 1 to 4 The technical solution provided by this utility model is as follows: a liquid phase sampler for chemical experiments, including a protective tube 1, both ends of which are empty. One end of the protective tube 1 is provided with an external thread 11, and the other end is provided with a baffle plate 3; it also includes a sampling mechanism 101, which is used to extract liquid; the sampling mechanism 101 includes a screw cap 4, on the outer surface of the screw cap 4 are provided a plurality of evenly distributed anti-slip strips 5, and on the inner wall of the screw cap 4 are provided an internal thread 12 adapted to the external thread 11. By screwing the screw cap 4 counterclockwise, the screw cap 4 and the protective tube 1 can be separated, which is convenient for cleaning and disinfection after use and convenient for the next use. The screw cap 4 is provided with a plurality of extraction tubes 6 and liquid storage tubes 8 distributed in a circumferential direction. The screw cap 4 is provided with through holes corresponding to the extraction tubes 6 and liquid storage tubes 8; the extraction tubes 6 and liquid storage tubes 8 are interconnected, and the liquid storage tubes 8 are located inside the protective tube 1.

[0025] In this embodiment, as Figures 1 to 4As shown, a conical tube 7 is provided on the extraction tube 6, covering the through hole of the screw cap 4. Inside the storage tube 8, there is a connected extraction rod 9 and a rubber piston 14. The rubber piston 14 is attached to the inner wall of the storage tube 8 and can slide on the inner wall. An operating plate 10 is provided at the end of the extraction rod 9 away from the rubber piston 14. The rubber piston 14 has a conical surface 15 that matches the conical inner wall of the conical tube 7. In use, the protective tube 1 is removed, one of the extraction tubes 6 is immersed in the sample liquid to be obtained, and the extraction rod 9 corresponding to that extraction tube 6 is pulled. A portion of the sample is drawn into the corresponding storage tube 8. Other required liquid samples are drawn in sequence following the aforementioned operation. During the experiment, pressing the corresponding extraction tube 6 will discharge the corresponding liquid. With the setting of multiple extraction tubes 6, storage tubes 8 and extraction rods 9, it is possible to avoid changing the sampler during sampling, which saves the time spent changing the sampler. It also eliminates the need to change the sampler during the droplet experiment, allowing the experimenter to focus on observing the reaction process inside the experimental equipment. This is conducive to the complete recording of experimental data, further reducing recording errors and improving the accuracy of experimental data. It is highly practical.

[0026] In this embodiment, as Figure 1 and Figure 3 As shown, a milliliter line 2 corresponding to the liquid storage tube 8 is provided on the outer surface of the protective tube 1. The protective tube 1 is made of colorless and transparent plastic. This setting makes it easy for the experimenter to observe the amount of liquid drawn and to record experimental data.

[0027] In this embodiment, as Figure 1 and Figure 3 As shown, a sealing gasket 13 is provided on the inner wall of the screw cap 4. The sealing gasket 13 can fit against the end face of the protective tube 1. When the screw cap 4 is connected to the protective tube 1, the end face of the protective tube 1 is pressed against the sealing gasket 13. The sealing gasket 13 is elastic and can be flattened to reduce wear.

[0028] The implementation principle of a liquid phase sampler for chemical experiments according to an embodiment of this application is as follows: During the experiment, pressing the corresponding extraction tube 6 will discharge the corresponding liquid. With the setting of multiple extraction tubes 6, liquid storage tubes 8 and extraction rods 9, it is possible to avoid changing the sampler during sampling, which saves the time spent changing the sampler. It also eliminates the need to change the sampler during droplet experiments, allowing the experimenter to focus on observing the reaction process inside the experimental equipment. This is conducive to the complete recording of experimental data, further reduces recording errors, improves the accuracy of experimental data, and has high practicality.

[0029] Example 2:

[0030] Please see Figure 5 The technical solution provided by this utility model is as follows:

[0031] Unlike Embodiment 1, the rubber piston 14 is provided with a fixing plate 16, and a screw hole 17 is provided on the fixing plate 16. A screw connector 18 that mates with the screw hole 17 is provided at the end of the extraction rod 9. This arrangement makes it easy to disassemble the rubber piston 14 that is severely worn or deformed and cannot be used normally, facilitates the replacement of easily damaged parts in the device, allows the main body of the device to be used for a long time without damage, extends the service life, reduces the cost of use, saves resources, and improves practicality.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A liquid sampler for chemical tests comprising a guard tube (1), characterised in that: The protective tube (1) is empty at both ends, one end of the protective tube (1) is provided with external threads (11), and the other end is provided with a blocking finger plate (3); Further comprising a sampling mechanism (101) for extracting liquid; The sampling mechanism (101) comprises a screw cap (4), an inner thread (12) adapted to the outer thread (11) is arranged on the inner wall of the screw cap (4), a plurality of extraction tubes (6) and liquid storage tubes (8) are arranged on the screw cap (4) in the circumferential direction, and through holes corresponding to the extraction tubes (6) and the liquid storage tubes (8) are formed in the screw cap (4); The extraction tubes (6) and the liquid storage tubes (8) are in communication with each other, and the liquid storage tubes (8) are located inside the protective tube (1).

2. A liquid sampler for chemical tests according to claim 1, characterized in that: A tapered tube (7) is arranged on the extraction tube (6) and covers the through hole of the screw cap (4).

3. A liquid sampler for chemical tests according to claim 2, characterized in that: An extraction rod (9) and a rubber piston (14) are arranged in the liquid storage tube (8), the rubber piston (14) is attached to the inner wall of the liquid storage tube (8) and can slide on the inner wall of the liquid storage tube (8), an operating plate (10) is arranged at the end of the extraction rod (9) away from the rubber piston (14), and a tapered surface (15) adapted to the tapered inner wall of the tapered tube (7) is arranged on the rubber piston (14).

4. A liquid sampler for chemical tests according to claim 3, characterized in that: A milliliter line (2) corresponding to the liquid storage tube (8) is arranged on the outer surface of the protective tube (1), and the protective tube (1) is made of colorless and transparent plastic material.

5. A liquid sampler for chemical tests according to claim 4, characterized in that: A plurality of evenly distributed anti-skid strips (5) are arranged on the outer surface of the screw cap (4).

6. A liquid sampler for chemical tests according to claim 5, characterized in that: A sealing rubber gasket (13) is arranged on the inner wall of the screw cap (4) and can be attached to the end face of the protective tube (1).

7. A liquid sampler for chemical tests according to claim 3, characterized in that: A fixing sheet (16) is arranged on the rubber piston (14), a screw hole (17) is formed in the fixing sheet (16), and a screw joint (18) matched with the screw hole (17) is arranged at the end of the extraction rod (9).

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