Sample holder for flash chromatography

Abstract

The utility model provides a kind of sample holder of rapid chromatograph, comprising: sample frame, sample frame is placed in the sample holder area of rapid chromatograph, sample frame includes opposite first end and second end along the height direction, first end or second end is according to the chromatograph needle of the direction of rapid chromatograph as needed by detection;First sample bearing plate, first sample bearing plate is fixed in sample frame from first end, and first sample bearing plate is used to place first sample container;Second sample bearing plate, second sample bearing plate is fixed in sample frame from second end, and second sample bearing plate is used to place second sample container, and the structure or specification of first sample container and second sample container is different;Sample holder front and back (i. e. first end and second end) can place sample container. The sample holder needs to have the compatibility of height, not only can place different specifications of beaker, but also can properly place test tube, to satisfy the diversified sample bearing demand in the use process of rapid chromatograph.

Description

Technical Field

[0001] This utility model relates to the field of sample holder technology, and specifically to a sample holder for a rapid chromatograph. Background Technology

[0002] In the field of chromatographic analysis technology, with the widespread application of rapid chromatographs, the design requirements for sample racks are becoming increasingly stringent. Traditional sample racks have many shortcomings in use and are gradually becoming unable to meet the diverse needs of modern rapid chromatographs.

[0003] First, existing sample racks have poor compatibility. Most sample racks can only accommodate sample containers of specific sizes, such as beakers or test tubes. When a laboratory needs to process multiple types and sizes of samples, it needs to purchase a large number of different sample racks to accommodate each type. This not only increases the laboratory's equipment procurement costs but also occupies a significant amount of storage space, hindering the efficient use of laboratory resources.

[0004] Secondly, traditional sample racks lack flexibility and versatility in their design. Rapid chromatographs have strict requirements on the placement and positional accuracy of samples in different experiments, but existing sample racks are difficult to adjust and adapt quickly, which to some extent limits the efficiency of the chromatograph and the convenience of experimental operations.

[0005] Secondly, existing sample racks offer limited protection for samples. During chromatographic analysis, the distance between the sample container and critical components of the chromatograph, such as the needle, as well as the stability of the sample container, are crucial to the accuracy of experimental results. However, traditional sample racks often fail to effectively ensure that the sample container is in the correct position and height, potentially leading to sample splashing or the sample container touching the chromatograph needle during operation. This not only affects the reliability of experimental data but may also damage the precision components of the chromatograph, increasing equipment maintenance costs.

[0006] Furthermore, with the development of chromatographic analysis technology, the requirements for sample temperature control are becoming increasingly stringent. Some samples require maintaining a specific temperature range during analysis to ensure their stability and reactivity, but most existing sample racks lack temperature control capabilities, which to some extent limits the application scope and accuracy of chromatographic analysis technology.

[0007] In summary, the existing technology lacks a sample holder that can meet the diverse needs of rapid chromatographs. There is an urgent need to develop a new type of multifunctional sample holder specifically for rapid chromatographs to solve the problems of poor compatibility, limited functionality, insufficient sample protection, and lack of temperature control of existing sample holders, thereby improving the efficiency of rapid chromatographs and the reliability of experimental results. Utility Model Content

[0008] The problem solved by this invention is to provide a sample rack for a rapid chromatograph, which can hold sample containers on both sides (i.e., the first and second ends). This sample rack needs to be highly compatible, not only able to hold beakers of different sizes, but also to properly hold test tubes, thereby meeting the diverse sample carrying needs during the use of a rapid chromatograph.

[0009] To address the aforementioned problems, this utility model provides a sample holder for a rapid chromatograph, comprising: a sample frame placed in the sample holder area of ​​the rapid chromatograph, the sample frame including a first end and a second end opposite each other along its height, the first end or the second end facing the chromatograph needle of the rapid chromatograph as required for detection; a first sample support plate fixed from the first end within the sample frame, the first sample support plate being used to hold a first sample container; and a second sample support plate fixed from the second end within the sample frame, the second sample support plate being used to hold a second sample container, the first sample container and the second sample container having different structures or specifications.

[0010] Optionally, there is a first spacing value between the chromatograph needle and the bottom surface of the sample holder area, and the height of the sample frame is less than the first spacing value.

[0011] Optionally, there is a second spacing value between the surface of the first sample carrier plate and the plane where the first end is located, and there is a third spacing value between the surface of the second sample carrier plate and the plane where the second end is located, wherein the second spacing value and the third spacing value are not equal.

[0012] Optionally, the second spacing value is greater than the third spacing value.

[0013] Optionally, there is a fourth spacing value between the surface of the first sample carrier plate and the plane where the second end is located, and the sum of the height of the first sample container and the fourth spacing value is less than the first spacing value.

[0014] Optionally, the second sample support plate includes a first sub-sample support plate and a second sub-sample support plate, the second sub-sample support plate being located between the first sub-sample support plate and the first sample support plate, the first sub-sample support plate having a plurality of first through holes, and the second sub-sample support plate having second through holes corresponding to the first through holes.

[0015] Optionally, a fifth spacing value exists between the first sub-sample carrier plate and the second sub-sample carrier plate, and the sum of the fifth spacing value and the third spacing value is less than the second spacing value.

[0016] Optionally, the sample may also include a temperature sensor, a heating element, and a control system for controlling the heating element, all located within the sample frame. The heating element is used to maintain the sample at a suitable temperature. The temperature sensor is used to monitor the temperature of the sample in real time and send a temperature signal. The control system receives the temperature signal and controls the heating element to operate accordingly.

[0017] Optionally, the first sample support plate is a solid flat plate.

[0018] Optionally, the sample frame is a cuboid frame, the sample frame includes frame columns and frame plates located between the frame columns, the frame plates enclosing a cavity, the first sample support plate and the second sample support plate are located in the cavity, the first sample support plate and the second sample support plate extend along a direction perpendicular to the height of the sample frame.

[0019] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0020] In the technical solution of the sample rack for a rapid chromatograph of this invention, a sample frame is placed in the sample rack area. The sample frame includes a first end and a second end along its height. The first end or the second end faces the chromatographic needle of the rapid chromatograph according to the detection requirements. A first sample support plate is fixed inside the sample frame from the first end and is used to place a first sample container. A second sample support plate is fixed inside the sample frame from the second end and is used to place a second sample container. The first sample container and the second sample container have different structures or specifications. By setting two sample support plates respectively placed at the first and second ends of the sample frame, the function of placing sample containers on both sides is realized. One side can be used to place first sample containers such as beakers, and the other side can be used to place second sample containers such as test tubes. This meets the diverse sample carrying needs of the rapid chromatograph under different experimental conditions, eliminating the need to purchase separate sample racks for sample containers of different specifications, and significantly improving the versatility and practicality of the sample rack.

[0021] Furthermore, there is a first distance value between the chromatographic needle and the bottom surface of the sample holder area, and the height of the sample frame is less than the first distance value. This limits the height of the sample frame to be less than the first distance value between the chromatographic needle and the bottom surface of the sample holder area, which not only ensures that the sample holder is stably placed in the sample holder area, but also effectively avoids problems such as damage to the sample container due to being too close to the chromatographic needle, or sample splashing due to being too far away, thus ensuring the safety of the chromatographic needle and the stability of sample detection. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the sample holder of a rapid chromatograph in one embodiment of the present invention;

[0023] Figure 2 This is an external view of a rapid chromatograph in one embodiment of the present invention. Detailed Implementation

[0024] Currently, in traditional sample rack procurement, different specifications of sample racks need to be purchased according to the size of the sample collection container. Moreover, these sample racks need to be used with rapid chromatographs, so only standard-sized sample containers can be used. In addition, the number of suppliers of sample racks available for purchase is extremely limited, resulting in high prices for sample racks.

[0025] Based on this, the present invention provides a sample rack for a rapid chromatograph. The sample frame is placed in the sample rack area and includes a first end and a second end along its height. The first end or the second end faces the chromatographic needle of the rapid chromatograph as needed for detection. A first sample support plate is fixed inside the sample frame from the first end and is used to hold a first sample container. A second sample support plate is fixed inside the sample frame from the second end and is used to hold a second sample container. The first and second sample containers have different structures or specifications. By setting two sample support plates respectively placed at the first and second ends of the sample frame, the function of placing sample containers on both sides is achieved. One side can be used to hold first sample containers such as beakers, and the other side can be used to hold second sample containers such as test tubes. This meets the diverse sample holding needs of the rapid chromatograph under different experimental conditions, eliminating the need to purchase separate sample racks for sample containers of different specifications, significantly improving the versatility and practicality of the sample rack.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Please refer to the following first. Figures 1 to 2 A sample holder 200 for a rapid chromatograph includes a sample frame 201, a first sample support plate 203, and a second sample support plate 204.

[0028] In this embodiment, the sample frame 201 is placed in the sample rack area of ​​the rapid chromatograph. The sample frame 201 includes a first end 200-1 and a second end 200-2 along its height direction. The first end 200-1 or the second end 200-2 faces the chromatograph needle of the rapid chromatograph as needed for detection. The first sample support plate 203 is fixed inside the sample frame 201 from the first end 200-1 and is used to place a first sample container. The second sample support plate 204 is fixed inside the sample frame 201 from the second end 200-2 and is used to place a second sample container. The first sample container and the second sample container have different structures or specifications. By setting two sample support plates respectively placed at the first end 200-1 and the second end 200-2 of the sample frame 201, the function of placing sample containers on both sides is realized. One side can be used to place beakers and other primary sample containers, while the other side can be used to place test tubes and other secondary sample containers. This meets the diverse sample carrying needs of rapid chromatographs under different experimental conditions, eliminating the need to purchase separate sample racks 200 for sample containers of different sizes, and significantly improving the versatility and practicality of the sample rack 200.

[0029] In this embodiment, please refer to Figure 2 The distance from the chromatograph needle to the bottom in the sample rack area is H1, the width is L1, and the total length of the rapid chromatograph needle position is L2. The height of the sample frame 201 is H1', ​​the width is L1', and the corresponding total length of the rapid chromatograph needle position is L2', wherein H1 is greater than H1', ​​L1 is greater than L1', and L2 is equal to L2'.

[0030] In this embodiment, the first sample container can be a beaker, and the second sample container can be a beaker or a test tube, wherein the volume of the beaker on the first sample support plate 203 is greater than the volume of the beaker on the second sample support plate 204.

[0031] In this embodiment, please refer to the reference. Figure 1 and Figure 2 There is a first distance value H1 between the chromatographic needle and the bottom surface of the sample holder area. The height H1' of the sample frame 201 is less than the first distance value H1. By limiting the height of the sample frame 201 to be less than the first distance value H1 between the chromatographic needle and the bottom surface of the sample holder area, it is possible to ensure that the sample holder 200 is stably placed in the sample holder area, and to effectively avoid problems such as damage to the sample container due to being too close to the chromatographic needle, or sample splashing due to being too far away. This ensures the safety of the chromatographic needle and the stability of sample detection.

[0032] In this embodiment, there is a second spacing value h1 between the surface of the first sample support plate 203 and the plane where the first end 200-1 is located, and there is a third spacing value h3 between the surface of the second sample support plate 204 and the plane where the second end 200-2 is located. The second spacing value h1 and the third spacing value h3 are not equal. There are different spacing values ​​between the first sample support plate 203 and the plane of the first end 200-1, and between the second sample support plate 204 and the plane of the second end 200-2, and these two spacing values ​​are not equal. This design allows the sample holder 200 to adapt to sample containers of different heights. Users can flexibly choose to use the first end 200-1 or the second end 200-2 according to the actual height of the sample container, which improves the applicability and flexibility of the sample holder 200.

[0033] In this embodiment, the second spacing value h1 is greater than the third spacing value h3. This setting of the second spacing value h1 being greater than the third spacing value h3 creates a reasonable spatial hierarchy in the height direction of the sample rack 200. When placing taller sample containers, the larger second spacing value h1 provides ample space; while for shorter sample containers, the smaller third spacing value h3 improves space utilization. Overall, this optimizes the spatial layout of the sample rack 200, enabling it to better adapt to the placement requirements of sample containers of different sizes.

[0034] In this embodiment, please refer to Figure 1 There is a fourth spacing value h2 between the surface of the first sample support plate 203 and the plane where the second end 200-2 is located. The sum of the height of the first sample container and the fourth spacing value h2 is less than the first spacing value H1. This constraint ensures that when the sample container is placed using the first sample support plate 203, the highest point of the sample container will not exceed the safe distance range of the chromatograph needle, effectively preventing the sample container from colliding with the chromatograph needle during the detection process, and ensuring the safety of operation and the reliability of experiment.

[0035] In this embodiment, the second sample support plate 204 includes a first sub-sample support plate 204-1 and a second sub-sample support plate 204-2. The second sub-sample support plate 204-2 is located between the first sub-sample support plate 204-1 and the first sample support plate 203. The first sub-sample support plate 204-1 has a plurality of first through holes 204-1a. The second sub-sample support plate 204-2 has a second through hole 204-2a corresponding to the first through hole 204-1a. The diameter of the first through hole 204-1a is larger than the diameter of the second through hole 204-2a. The second sample support plate 204 includes the first sub-sample support plate 204-1 and the second sub-sample support plate 204-2, and the second sub-sample support plate 204-2 is located between the first sub-sample support plate 204-1 and the first sample support plate 203, forming a multi-layered sample support structure. The first through hole 204-1a on the first sub-sample support plate 204-1 and the second through hole 204-2a on the second sub-sample support plate 204-2 cooperate with each other to meet the placement requirements of sample containers of different specifications and types. For example, if the test tube fixed in the first through hole 204-1a is too long, the second through hole 204-2a plays the role of supporting and stabilizing the test tube, ensuring the stability of the container placement on the first sub-sample support plate 204-1.

[0036] In this embodiment, the dimensions of the first through hole 204-1a and the second through hole 204-2a are equal.

[0037] In this embodiment, a fifth spacing value h4 exists between the first sub-sample support plate 204-1 and the second sub-sample support plate 204-2. The sum of the fifth spacing value h4 and the third spacing value h3 is less than the second spacing value h1. This allows for precise control of the top position of sample containers of different heights when they are placed on the second sample support plate 204, ensuring that they do not exceed the safe height range of the chromatograph needle. Simultaneously, it provides suitable placement positions for sample containers such as test tubes of different lengths, ensuring the safety and accuracy of experimental operations.

[0038] In this embodiment, the system also includes a temperature sensor (not shown in the figure), a heating element (not shown in the figure), and a control system (not shown in the figure) located within the sample frame 201. The heating element is used to maintain the sample at a suitable temperature. The temperature sensor is used to monitor the sample temperature in real time and send a temperature signal. The control system receives the temperature signal and controls the heating element to operate accordingly. The sample frame 201 integrates a temperature sensor, a heating element, and a control system, enabling real-time monitoring and precise control of the sample temperature. Maintaining the sample within a suitable temperature range using a heating element is crucial for temperature-sensitive samples or chromatographic analysis experiments requiring specific temperature conditions. This helps improve the accuracy and repeatability of detection results and enhances the application capabilities of the rapid chromatograph in complex experimental scenarios.

[0039] In this embodiment, the first sample support plate 203 is a solid flat plate, which has high structural strength and stability, providing solid support for sample containers such as beakers and ensuring that the sample containers will not be affected by deformation or shaking of the support plate during the testing process. The solid flat plate design also facilitates cleaning and maintenance, improving the service life and reliability of the sample holder 200.

[0040] In this embodiment, the sample frame 201 is a cuboid frame, comprising frame columns 201a and frame plates 202 located between the frame columns 201a. The frame plates 202 enclose a cavity, within which the first sample support plate 203 and the second sample support plate 204 are located. The first sample support plate 203 and the second sample support plate 204 extend along a direction perpendicular to the height of the sample frame 201, which not only improves the structural strength and load-bearing capacity of the sample holder 200 but also provides good protection for the sample support plates, preventing them from being subjected to external impacts or damage during use. Simultaneously, the cavity enclosed by the frame plates 202 also helps to keep the interior of the sample holder 200 clean and tidy, facilitating sample placement and handling.

[0041] Figure 1 To facilitate observation of the first sample support plate 203 and the second sample support plate 204 within the cavity, the frame plate 202 is made into a transparent plate. However, in actual use, the material of the frame plate 202 can be selected according to the needs.

[0042] The sample rack area with specific height, width, and length will be described in detail below.

[0043] In terms of dimensions, the length L2', width L1', and height H1' of the sample holder 200 are precisely set according to the position of the rapid chromatograph sample holder 200. The total height (H1') is set to 12cm, which is less than the distance H1 from the bottom of the rapid chromatograph needle. This effectively protects the chromatograph needle and prevents sample splattering during operation due to the sample container being too far from the needle. The width L1' is designed to be 18cm, slightly narrower than the 19cm width of the rapid chromatograph, ensuring that the sample holder 200 can be easily placed inside the rapid chromatograph. The length L2' is consistent with the rapid chromatograph at 44cm.

[0044] The first sample support plate 203 is 3 cm from the top (h1) of the first end 200-1 and 9 cm from the bottom (h2). This plane can accommodate beakers of different sizes. The sum of the beaker height and the distance from the solid plane to the bottom (h2) should be less than the distance H1 (18 cm) from the bottom of the chromatograph needle. This restriction effectively prevents the beaker from touching the chromatograph needle during operation, thus protecting the needle.

[0045] The second sample support plate 204 includes a first sub-sample support plate 204-1 and a second sub-sample support plate 204-2. The first sub-sample support plate 204-1 has 18 first through holes 204-1a along a length L2' (44cm) and 9 first through holes 204-1a along a width L1' (18cm). The diameter of each first through hole 204-1a is 1.6cm, and the gap between the first through holes 204-1a is 0.2cm. The placement of the first sub-sample support plate 204-1 and the second sub-sample support plate 204-2 is as follows... Figure 1 As shown. The first sub-sample support plate 204-1 is 0.2 cm from the bottom h3, and the second sub-sample support plate 204-2 is 1.5 cm from the bottom h4+h3, meaning the distance between it and the first sample support plate 203 is h2-h4-h3, which is 7.5 cm. Beakers with a height of less than 6 cm can be placed on the first sub-sample support plate 204-1. Since the sample holder 200 itself is 12 cm high, the overall height is sufficient to prevent sample splashing. Test tubes with a diameter less than 1.6 cm can be inserted into the first through hole 204-1a of the first sub-sample support plate 204-1. The requirement is that the sum of the height of the exposed part of the test tube and the height of the sample holder 200 (12 cm) should be less than 18 cm to avoid contact with the rapid chromatograph needle during instrument operation.

[0046] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A sample holder for a rapid chromatograph, characterized in that, include: A sample frame is placed in the sample rack area of ​​the rapid chromatograph. The sample frame includes a first end and a second end along the height direction, and the first end or the second end faces the chromatograph needle of the rapid chromatograph as needed for detection. A first sample support plate is fixed inside the sample frame from the first end, and the first sample support plate is used to place a first sample container. The second sample support plate is fixed inside the sample frame from the second end. The second sample support plate is used to place the second sample container. The structure or specifications of the first sample container and the second sample container are different.

2. The sample holder of the rapid chromatograph as described in claim 1, characterized in that, There is a first gap value between the chromatograph needle and the bottom surface of the sample holder area, and the height of the sample frame is less than the first gap value.

3. The sample holder of the rapid chromatograph as described in claim 2, characterized in that, There is a second spacing value between the surface of the first sample carrier plate and the plane where the first end is located, and there is a third spacing value between the surface of the second sample carrier plate and the plane where the second end is located. The second spacing value and the third spacing value are not equal.

4. The sample holder of the rapid chromatograph as described in claim 3, characterized in that, The second spacing value is greater than the third spacing value.

5. The sample holder of the rapid chromatograph as described in claim 3, characterized in that, There is a fourth spacing value between the surface of the first sample carrier plate and the plane where the second end is located, and the sum of the height of the first sample container and the fourth spacing value is less than the first spacing value.

6. The sample holder of the rapid chromatograph as described in claim 5, characterized in that, The second sample support plate includes a first sub-sample support plate and a second sub-sample support plate. The second sub-sample support plate is located between the first sub-sample support plate and the first sample support plate. The first sub-sample support plate has a plurality of first through holes, and the second sub-sample support plate has second through holes corresponding to the first through holes.

7. The sample holder of the rapid chromatograph as described in claim 6, characterized in that, There is a fifth spacing value between the first sub-sample support plate and the second sub-sample support plate, and the sum of the fifth spacing value and the third spacing value is less than the second spacing value.

8. The sample holder of the rapid chromatograph as described in claim 1, characterized in that, It also includes a temperature sensor, a heating element, and a control system located within the sample frame. The heating element is used to maintain the sample at a suitable temperature. The temperature sensor is used to monitor the temperature of the sample in real time and send a temperature signal. The control system receives the temperature signal and controls the heating element to work accordingly.

9. The sample holder of the rapid chromatograph as described in claim 1, characterized in that, The first sample support plate is a solid flat plate.

10. The sample holder of the rapid chromatograph as described in claim 1, characterized in that, The sample frame is a cuboid frame, which includes frame columns and frame plates located between the frame columns. The frame plates enclose a cavity, and the first sample support plate and the second sample support plate are located within the cavity. The first sample support plate and the second sample support plate extend along a direction perpendicular to the height of the sample frame.

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