Manually operated sampling device

Abstract

The utility model provides a manually operated sample introduction device, which belongs to the technical field of sample introduction devices and comprises a shell, a sample introduction pipe, a sample introduction pipe and a sample introduction pipe, the temperature control equipment is arranged in the shell; the sample disc rotating hand wheel and the sample injection needle lifting hand wheel are arranged on one side of the shell; the rotary sample disc is rotationally connected into the shell; the manually operated sample injection device realizes high-precision control of sample treatment, the sample injection needle lifting hand wheel and the sample disc rotating hand wheel are combined for use, so that the accuracy of sampling and sample injection each time is ensured, the experimental result deviation caused by sampling errors can be effectively avoided when a trace sample is analyzed, and in addition, the accuracy of the sample injection needle lifting hand wheel and the accuracy of the sample injection needle lifting hand wheel are improved. Due to the design that the sample injection needle lifting device is located over the sampling bottle, the relative displacement between the sample injection needle and the sample is reduced, and the accuracy of the sample injection process is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sampling devices, and particularly relates to a manually operated sampling device. Background Art

[0002] The sampling device is a key component in laboratory analytical instruments for introducing samples into the analysis system. It plays an important role in various analytical techniques such as chromatography, mass spectrometry, and spectroscopy, ensuring that samples can enter the analytical equipment accurately and stably to obtain reliable data.

[0003] The electronic nose is widely used in odor detection. Due to the specificity of samples, some samples need to be appropriately heated, and some contain suspended aerosol substances, so the gas needs to be filtered. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a manually operated sampling device, aiming to solve the problems that in the prior art, the electronic nose is widely used in odor detection. Due to the specificity of samples, some samples need to be appropriately heated, and some contain suspended aerosol substances, so the gas needs to be filtered.

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

[0006] A manually operated sampling device, comprising:

[0007] A housing;

[0008] A temperature control device, which is arranged inside the housing;

[0009] A sample tray rotation handwheel and a sampling needle lifting handwheel, which are arranged on one side of the housing;

[0010] A rotary sample tray, which is rotatably connected inside the housing;

[0011] A sampling needle lifting device and a fixing bracket, which are located inside the housing;

[0012] A sampling needle body, which is arranged below the sampling needle lifting device.

[0013] As a preferred scheme of the utility model, the corners of the housing are designed as rounded corners.

[0014] As a preferred scheme of the utility model, there are nine sampling bottles in the rotary sample tray.

[0015] As a preferred scheme of the utility model, the sampling needle lifting device is located directly above the sampling bottle.

[0016] As a preferred solution of the present utility model, a zero air port and a sample gas port are provided on one side of the housing.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. In this solution, the manually operated sampling device achieves high-precision control of sample processing. The combined use of the sampling needle lifting handwheel and the sample tray rotating handwheel ensures the accuracy of each sampling and sample injection. When analyzing trace samples, it can effectively avoid experimental result deviations caused by sampling errors. In addition, the design that the sampling needle lifting device is located directly above the sampling bottle reduces the relative displacement between the sampling needle and the sample, further improving the precision of the sample injection process.

[0019] 2. In this solution, the rounded corner design of the housing not only improves the safety of the operator, but also makes the appearance of the device more smooth and beautiful, enhancing the overall laboratory environment. The setting of the zero air port and the sample gas port on one side of the housing greatly simplifies the process of introducing and discharging gas samples, eliminating the need for frequent disassembly and assembly of the device and saving a large amount of preparation time. Description of the Drawings

[0020] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0021] Figure 1 is the front perspective view of the present utility model;

[0022] Figure 2 is the Figure 1 partial enlarged view of part A in

[0023] In the figure: 1. Housing; 2. Temperature control device; 3. Sample tray rotating handwheel; 4. Sampling needle lifting handwheel; 5. Sampling needle lifting device; 6. Rotary sample tray; 7. Sampling needle; 8. Fixed frame. Detailed Embodiments

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] Please refer to Figure 1 - Figure 2, the present utility model provides the following technical solutions:

[0027] A manually operated sampling device, comprising:

[0028] A housing 1;

[0029] A temperature control device 2, which is arranged inside the housing 1;

[0030] A sample tray rotating handwheel 3 and a sampling needle lifting handwheel 4, which are arranged on one side of the housing 1;

[0031] A rotary sample tray 6, which is rotatably connected inside the housing 1;

[0032] A sampling needle lifting device 5 and a fixing bracket 8, which are located inside the housing 1;

[0033] A sampling needle body 7, which is arranged below the sampling needle lifting device 5.

[0034] In a specific embodiment of the present utility model, the housing 1 provides support and protection for the entire device, accommodates all components inside, and is provided with a sample tray rotating handwheel 3 and a sampling needle lifting handwheel 4 for easy operation outside. The temperature control device 2 maintains a constant temperature in the working environment of the sample tray and the sampling needle, ensuring the stability of the sample. The sample tray rotating handwheel 3 controls the rotation of the rotary sample tray 6 by manual rotation to realize the switching of different sample positions. The sampling needle lifting handwheel 4 is used to manually adjust the height of the sampling needle body 7 to adapt to the depth of different sample containers. The rotary sample tray 6 rotates driven by the sample tray rotating handwheel 3, carries multiple sample containers, and facilitates the quick replacement of samples. The sampling needle lifting device 5 is connected to the sampling needle lifting handwheel 4 and adjusts the vertical position of the sampling needle body 7 according to the operation of the handwheel. The fixing bracket 8 is installed inside the housing 1 to stably support the sampling needle lifting device 5 and ensure the stable and non-offset vertical movement of the sampling needle body 7. The sampling needle body 7 realizes up and down movement through the control of the sampling needle lifting handwheel 4 to complete the aspiration and injection of samples. When the personnel rotate, different segments of sampling can be realized, and appropriate heating can be carried out at the same time to prevent substances containing suspended aerosols from entering the container.

[0035] Specifically, please refer to Figure 1 - Figure 2 , the corners of the housing 1 are designed with rounded corners.

[0036] In this embodiment: The rounded corner design can effectively reduce the risk of operators being injured due to accidental collision with sharp corners during use. In a laboratory environment, operators often need to move frequently or stand for a long time to operate.

[0037] Specifically, please refer to Figure 1 - Figure 2, there are nine sampling bottles in the rotary sample tray 6.

[0038] In this embodiment: Nine sampling bottles can be placed in the rotary sample tray 6 at one time, which is convenient for personnel to operate continuously, reduces the replacement time, and improves work efficiency.

[0039] Specifically, please refer to Figure 1 - Figure 2 , the sample injection needle lifting device 5 is located directly above the sampling bottle.

[0040] In this embodiment: The sample injection needle body 7 is directly perpendicular to the center of the sampling bottle, ensuring the accuracy of each sampling. The vertical path reduces the deviation of the sample volume caused by the inclination angle, guarantees the accuracy and consistency of the experimental results, precisely matches sampling bottles of different sizes, without complex horizontal adjustment, and the vertical descending and ascending paths of the sample injection needle are the shortest, reducing the chance of contact with the external environment, thereby reducing the possibility of sample contamination.

[0041] Specifically, please refer to Figure 1 - Figure 2 , one side of the housing 1 is provided with a zero gas port and a sample gas port.

[0042] In this embodiment: The zero gas port is used to introduce pure gas, usually purified air or inert gas, for calibrating the zero point of the instrument to ensure the accuracy of the analysis results. The sample gas port is used to receive or discharge the sample gas. When analyzing gas samples, the sample gas is introduced into the sampling device through the sample gas port, and then accurately metered and injected into the analytical instrument through the sample injection needle body 7, avoiding the interference of external impurities and improving the analysis accuracy.

[0043] The working principle and usage process of the present utility model: Place the samples to be analyzed in the respective sample containers on the rotary sample tray 6. According to the sample requirements, use the temperature control device 2 to set and maintain an appropriate working temperature. Rotate the rotary handwheel 3 of the sample tray to position the target sample directly below the sample injection needle body 7. Rotate the lifting handwheel 4 of the sample injection needle to adjust the sample injection needle body 7 to an appropriate height to ensure that it can accurately contact the sample surface without damaging the container. Slowly lower the sample injection needle body 7 to aspirate the sample; then lift it to the specified height, move the sample tray to the interface of the analytical instrument, release the sample, and the manual operation can flexibly adjust the sampling parameters according to the experimental requirements, which is suitable for small-batch or special sample processing.

[0044] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A manually operated sampling device, characterized in that, Comprising: A housing (1); A temperature control device (2), which is arranged inside the housing (1); A sample disk rotation handwheel (3) and a sampling needle lifting handwheel (4), which are arranged on one side of the housing (1); A rotary sample disk (6), which is rotatably connected inside the housing (1); A sampling needle lifting device (5) and a fixing bracket (8), which are located inside the housing (1); A sampling needle body (7), which is arranged below the sampling needle lifting device (5).

2. The manual sampling device according to claim 1, characterized in that: The corners of the housing (1) are designed with rounded corners.

3. The manual injection device according to claim 2, characterized in that: There are nine sampling bottles inside the rotary sample disk (6).

4. The manual injection device according to claim 3, characterized in that: The sampling needle lifting device (5) is located directly above the sampling bottle.

5. A manually operated sample injection device according to claim 4, characterized in that: One side of the housing (1) is provided with a zero gas port and a sample gas port.

Images