Ion chromatography heating and heat preservation device
By designing temperature control components in the ion chromatography heating and insulation device and performing temperature control on the chromatographic column, the problem of difficulty in effectively controlling the mobile phase temperature in the prior art is solved, and the accuracy of the analysis results is improved.
Patent Information
- Application Number
- CN202421734503.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-19
AI Technical Summary
Existing ion chromatography heating and insulation devices are difficult to effectively control the mobile phase temperature, resulting in inaccuracy of the analysis results.
An ion chromatographic heating and insulation device including a temperature control component is designed. The column is subjected to temperature control processing through the temperature control component to ensure that the temperature of the mobile phase or sample liquid flowing into the column is consistent with the target temperature inside the column.
Through temperature control treatment, the problem of excessive or low column temperature is avoided, ensuring the accuracy and reliability of the analysis results.
Smart Images
Figure CN223037885U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ion chromatography, in particular to an ion chromatography heating and heat preservation device. Background Technique
[0002] Ion chromatography is a kind of high performance liquid chromatography and a liquid chromatography method for analyzing anions and cations. Narrowly speaking, ion chromatography is a chromatography method that uses an ion exchange resin with a low exchange capacity as a stationary phase to separate ionic substances and continuously detects the change in the conductivity of the effluent with a conductivity detector. The definition of ion chromatography in "Principles and Applications of Ion Chromatography" is: a liquid chromatography method that uses the ionic properties of the analyte for separation and detection.
[0003] Because the environmental temperature of the chromatographic column must be kept constant in ion chromatography analysis to improve the accuracy of the detection results. Especially for ion chromatographs equipped with conductivity detectors, during the operation of the ion chromatograph, usually for every 1°C change in temperature, the conductivity of the solution changes by nearly 2% - 2.5%. It can be seen that the temperature of the system flow path has a great influence on the detection results. Currently, most methods are used to control the temperature of the chromatographic column by controlling the column temperature, but there is no good way to control the temperature of the mobile phase. Even if the whole room uses air conditioning, it is difficult to keep the temperature of the mobile phase consistent. Therefore, for the improvement of the existing heating and heat preservation device, it is particularly important to design a new type of ion chromatography heating and heat preservation device to solve the above technical defects and improve the practicability of the overall heating and heat preservation device. Content of the Utility Model
[0004] The purpose of the utility model is to provide an ion chromatography heating and heat preservation device. When the chromatographic column is operating, the temperature control component can perform temperature control on it to prevent the temperature of the chromatographic column from being too high or too low, which affects the operation of the chromatographic column, and keep the temperature of the mobile phase or sample solution flowing into the chromatographic column consistent with the target temperature inside the chromatographic column, thereby ensuring the accuracy of the analysis results, so as to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] An ion chromatography heating and heat preservation device includes a main heat preservation cylinder. A connecting shell is arranged on the outer side of the main heat preservation cylinder. A temperature control component is arranged inside the connecting shell. The temperature control component penetrates through the connecting shell and extends into the main heat preservation cylinder to be provided with a temperature control pipe. Inside the main heat preservation cylinder and outside the temperature control pipe, there is a chromatographic column;
[0007] The temperature control component is used to perform temperature control on the chromatographic column inside the main heat preservation cylinder.
[0008] As a preferred solution of the present utility model, the temperature control assembly is composed of a heating chamber, a cooling chamber, a semiconductor refrigeration sheet, a delivery pipe, a return pipe, a moving rod, a limiting block and a through groove. The heating chamber is opened inside the connecting shell, the cooling chamber is opened outside the heating chamber and inside the connecting shell, the semiconductor refrigeration sheet is located between the heating chamber and the cooling chamber and inside the connecting shell, the delivery pipe is located outside the connecting shell, the return pipe is located at one end of the connecting shell away from the delivery pipe, two groups of the moving rods are both slidably connected inside the connecting shell and located at both ends of the semiconductor refrigeration sheet, the limiting block is fixedly connected to the outside of the moving rod, and the through groove is opened inside the limiting block.
[0009] As a preferred solution of the present utility model, conduction plates are respectively arranged at both ends of the semiconductor refrigeration sheet extending into the heating chamber and the cooling chamber, and the semiconductor refrigeration sheet is connected to the heating chamber and the cooling chamber respectively through two groups of conduction plates.
[0010] As a preferred solution of the present utility model, one ends of the delivery pipe and the return pipe away from the connecting shell are both connected to a temperature control pipe, and the temperature control pipe is designed in a spiral structure.
[0011] As a preferred solution of the present utility model, guiding pipes are respectively arranged inside the connecting shell where the delivery pipe and the return pipe extend, and one ends of the two groups of guiding pipes away from the delivery pipe and the return pipe respectively extend into the heating chamber and the cooling chamber.
[0012] As a preferred solution of the present utility model, a connecting groove is opened inside the guiding pipe, the internal structure size of the connecting groove corresponds to the external structure size of the limiting block, and the guiding pipe is connected to one of the heating chamber or the cooling chamber through the through groove.
[0013] As a preferred solution of the present utility model, a compression spring is arranged on the outside of the moving rod, a driving rod is arranged inside the connecting shell and above the moving rod, a driving block is arranged on the outside of the driving rod, and the driving rod extends to the outside of the connecting shell and is fixedly connected to the driving end of a telescopic cylinder.
[0014] Compared with the prior art, the beneficial effects of the present utility model are:
[0015] In the present utility model, through the design of the temperature control assembly, when the chromatographic column is operating, the temperature control assembly can perform temperature control on it, preventing the temperature of the chromatographic column from being too high or too low, which affects the operation of the chromatographic column, and making the temperature of the mobile phase or the sample solution flowing into the chromatographic column consistent with the target temperature inside the chromatographic column, thereby ensuring the accuracy of the analysis result. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;
[0017] Figure 2 This is a schematic structural diagram of the connection shell of the present utility model;
[0018] Figure 3 This is a schematic structural diagram of the temperature control component of the present utility model;
[0019] Figure 4 This is a schematic structural diagram of the moving rod of the present utility model.
[0020] In the figure: 1, main body of the heat preservation cylinder; 2, connection shell; 3, temperature control component; 4, temperature control pipe; 5, heating chamber; 6, cooling chamber; 7, semiconductor refrigeration sheet; 8, conveying pipe; 9, return pipe; 10, moving rod; 11, limiting block; 12, through groove; 13, conduction plate; 14, guiding pipe; 15, compression spring; 16, driving rod; 17, driving block. Specific embodiments
[0021] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] Embodiment:
[0023] Please refer to Figures 1-4 The present utility model provides a technical solution:
[0024] An ion chromatography heating and heat preservation device includes a main body 1 of a heat preservation cylinder. A connection shell 2 is arranged outside the main body 1 of the heat preservation cylinder. A temperature control component 3 is arranged inside the connection shell 2. The temperature control component 3 penetrates through the connection shell 2 and extends to the inside of the main body 1 of the heat preservation cylinder to be provided with a temperature control pipe 4. Inside the main body 1 of the heat preservation cylinder and outside the temperature control pipe 4, a chromatographic column is arranged;
[0025] The temperature control component 3 is used for controlling the temperature of the chromatographic column inside the main body 1 of the heat preservation cylinder.
[0026] Further, the temperature control component 3 is composed of a heating chamber 5, a cooling chamber 6, a semiconductor refrigeration sheet 7, a delivery pipe 8, a return pipe 9, a moving rod 10, a limiting block 11, and a through groove 12. The heating chamber 5 is opened inside the connection shell 2. The cooling chamber 6 is opened outside the heating chamber 5 and inside the connection shell 2. The semiconductor refrigeration sheet 7 is located between the heating chamber 5 and the cooling chamber 6 and inside the connection shell 2. The delivery pipe 8 is located outside the connection shell 2. The return pipe 9 is located at one end of the connection shell 2 away from the delivery pipe 8. Both groups of moving rods 10 are slidably connected inside the connection shell 2 and located at both ends of the semiconductor refrigeration sheet 7. The limiting block 11 is fixedly connected to the outside of the moving rod 10. The through groove 12 is opened inside the limiting block 11. When the chromatographic column is operating, the temperature control component 3 can perform temperature control on it to prevent the temperature of the chromatographic column from being too high or too low, which affects the operation of the chromatographic column, so that the temperature of the mobile phase or sample liquid flowing into the chromatographic column is consistent with the target temperature inside the chromatographic column, thereby ensuring the accuracy of the analysis results.
[0027] Among them, conduction plates 13 are respectively provided at both ends of the semiconductor refrigeration sheet 7 extending into the heating chamber 5 and the cooling chamber 6, and the semiconductor refrigeration sheet 7 is connected to the heating chamber 5 and the cooling chamber 6 respectively through the two conduction plates 13. When the semiconductor refrigeration sheet 7 is operating, the temperature generated by the semiconductor refrigeration sheet 7 can be conducted into the heating chamber 5 and the cooling chamber 6 respectively through the two conduction plates 13, so that the liquid inside the heating chamber 5 and the cooling chamber 6 can be heated and refrigerated. A circulation pump is provided on the outside of the delivery pipe 8.
[0028] Secondly, the ends of the delivery pipe 8 and the return pipe 9 away from the connection shell 2 are both connected to the temperature control pipe 4. The temperature control pipe 4 is designed in a spiral structure. Connecting the delivery pipe 8 and the return pipe 9 to the temperature control pipe 4, the spiral structure design of the temperature control pipe 4 increases the time and area of heat conduction contact between the liquid inside it and the chromatographic column, so that the temperature control of the chromatographic column can be better performed.
[0029] Furthermore, guide pipes 14 are provided inside the connection shell 2 where the delivery pipe 8 and the return pipe 9 extend. The ends of the two guide pipes 14 away from the delivery pipe 8 and the return pipe 9 respectively extend into the heating chamber 5 and the cooling chamber 6. A connection groove is opened inside the guide pipe 14. The internal structure size of the connection groove corresponds to the external structure size of the limiting block 11. The guide pipe 14 is connected to one of the heating chamber 5 or the cooling chamber 6 through the through groove 12. Connecting the through groove 12 to the guide pipe 14 enables the guide pipe 14 to be connected to one of the heating chamber 5 or the cooling chamber 6, so that the liquid inside the heating chamber 5 or the cooling chamber 6 can be introduced into the guide pipe 14.
[0030] Further, a compression spring 15 is provided on the outer side of the moving rod 10. Above the moving rod 10 inside the connecting shell 2, a driving rod 16 is provided. A driving block 17 is provided on the outer side of the driving rod 16, and the driving rod 16 extends to the outside of the connecting shell 2 and is fixedly connected to the driving end of the telescopic cylinder. Starting the telescopic cylinder drives the driving rod 16 to displace, enabling the driving block 17 to displace, driving the moving rod 10 to displace, so that the limiting block 11 can displace, connecting the end of the through groove 12 and the guiding tube 14 extending into the heating chamber 5, enabling the guiding tube 14 to be connected to the heating chamber 5 through the through groove 12. Starting the circulation pump to introduce the liquid inside the heating chamber 5 into the inside of the delivery pipe 8, enabling the liquid to be introduced into the inside of the temperature control tube 4. The chromatographic column can be heated through the temperature control tube 4. The liquid introduced into the temperature control tube 4 will be introduced into the inside of the return pipe 9 and then introduced into the heating chamber 5 for circulating heating. Therefore, the chromatographic column can be effectively heated. When temperature control of the chromatographic column is required, the driving rod 16 is reset to reset the driving block 17, disconnecting the connection with the moving rod 10. The compression spring 15 drives the moving rod 10 to displace, enabling the limiting block 11 to displace, connecting the end of the through groove 12 and the guiding tube 14 extending into the cooling chamber 6, enabling the guiding tube 14 to be connected to the cooling chamber 6 through the through groove 12. The temperature control tube 4 is cooled by the liquid inside the cooling chamber 6, so that temperature control of the chromatographic column can be achieved.
[0031] In this embodiment, the implementation scenario is specifically as follows: Start the semiconductor refrigeration sheet 7. When the semiconductor refrigeration sheet 7 is operating, the temperature generated by the semiconductor refrigeration sheet 7 can be conducted to the inside of the heating chamber 5 and the cooling chamber 6 through two sets of conduction plates 13, so that the liquid inside the heating chamber 5 and the cooling chamber 6 can be heated and cooled. Start the telescopic cylinder to drive the displacement of the drive rod 16, so that the drive block 17 can be displaced, driving the displacement of the moving rod 10, and thus the limit block 11 can be displaced to connect the through groove 12 with one end of the guide pipe 14 extending into the heating chamber 5, so that the guide pipe 14 can be connected to the heating chamber 5 through the through groove 12. Start the circulation pump to introduce the liquid inside the heating chamber 5 into the inside of the conveying pipe 8, so that the liquid can be introduced into the inside of the temperature control pipe 4. The chromatographic column can be heated through the temperature control pipe 4. The liquid introduced into the temperature control pipe 4 will be introduced into the inside of the return pipe 9 and then into the inside of the heating chamber 5 for circulating heating. Therefore, the chromatographic column can be effectively heated. When the chromatographic column needs to be temperature-controlled, reset the drive rod 16 to reset the drive block 17, disconnecting the connection with the moving rod 10. Drive the displacement of the moving rod 10 through the compression spring 15, so that the limit block 11 can be displaced to connect the through groove 12 with one end of the guide pipe 14 extending into the cooling chamber 6, so that the guide pipe 14 can be connected to the cooling chamber 6 through the through groove 12. The temperature control pipe 4 is cooled by the liquid inside the cooling chamber 6, so that the chromatographic column can be temperature-controlled. Compared with the existing heating and heat preservation device, the overall practicability of the heating and heat preservation device can be improved by the design of the present utility model.
[0032] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. An ion chromatography heating and heat preservation device, comprising a heat preservation cylinder body (1), characterized in that: A connecting shell (2) is provided on the outside of the heat preservation cylinder body (1), a temperature control assembly (3) is provided inside the connecting shell (2), the temperature control assembly (3) penetrates the connecting shell (2) and extends to the inside of the heat preservation cylinder body (1), a temperature control tube (4) is provided, and a chromatographic column is provided inside the heat preservation cylinder body (1) and outside the temperature control tube (4); The temperature control component (3) is used to perform temperature control on the chromatographic column inside the heat preservation cylinder body (1).
2. An ion chromatography heating and heat preservation device according to claim 1, characterized in that: The temperature control component (3) is composed of a heating chamber (5), a cooling chamber (6), a semiconductor cooling sheet (7), a delivery pipe (8), a return pipe (9), a moving rod (10), a limit block (11) and a through groove (12); the heating chamber (5) is opened inside the connecting shell (2); the cooling chamber (6) is opened outside the heating chamber (5) and is located inside the connecting shell (2); the semiconductor cooling sheet (7) is located between the heating chamber (5) and the cooling chamber (6) and is located inside the connecting shell (2); the delivery pipe (8) is located outside the connecting shell (2); the return pipe (9) is located at one end of the connecting shell (2) away from the delivery pipe (8); the two groups of moving rods (10) are slidably connected to the inside of the connecting shell (2) and are located at both ends of the semiconductor cooling sheet (7); the limit block (11) is fixedly connected to the outside of the moving rod (10); and the through groove (12) is opened inside the limit block (11).
3. An ion chromatography heating and heat preservation device according to claim 2, characterized in that: Both ends of the semiconductor refrigeration sheet (7) extend to the interior of the heating chamber (5) and the cooling chamber (6), respectively, and are provided with conduction plates (13), and the semiconductor refrigeration sheet (7) is connected to the heating chamber (5) and the cooling chamber (6) respectively through two groups of conduction plates (13).
4. An ion chromatography heating and heat preservation device according to claim 2, characterized in that: The ends of the delivery pipe (8) and the return pipe (9) away from the connection shell (2) are both connected to the temperature control pipe (4), and the temperature control pipe (4) is designed in a spiral structure.
5. An ion chromatography heating and heat preservation device according to claim 2, characterized in that: The delivery pipe (8) and the return pipe (9) are extended to the interior of the connection shell (2) and are both provided with guide pipes (14); the ends of the two groups of guide pipes (14) that are respectively away from the delivery pipe (8) and the return pipe (9) extend to the interior of the heating chamber (5) and the cooling chamber (6).
6. An ion chromatography heating and heat preservation device according to claim 5, characterized in that: A connecting groove is provided inside the guide tube (14), and the internal structure size of the connecting groove is designed to correspond to the external structure size of the limit block (11). The guide tube (14) is connected to a group of the heating chamber (5) or the cooling chamber (6) through the through groove (12).
7. An ion chromatography heating and heat preservation device according to claim 2, characterized in that: A compression spring (15) is provided on the outer side of the moving rod (10), a driving rod (16) is provided inside the connecting shell (2) and above the moving rod (10), a driving block (17) is provided on the outer side of the driving rod (16), and the driving end of the driving rod (16) is fixedly connected to the outer side of the connecting shell (2) and is provided with a telescopic cylinder.