Column oven of ion chromatograph

Abstract

The utility model relates to the technical field of ion chromatographs, in particular to a column oven of an ion chromatograph. A column oven of an ion chromatograph comprises a column oven structure and a column oven isothermal body arranged in the column oven structure, a chromatographic column and a temperature control assembly are arranged on the column oven isothermal body, a heat insulation structure matched with the column oven isothermal body is arranged in the column oven structure, and a valve assembly matched with the chromatographic column to form a passage is further arranged in the column oven structure. According to the utility model, by controlling and monitoring the temperature in the column box structure, the temperature can be accurately controlled and maintained in a proper range, so that the temperatures of the chromatographic column, the environment, the liquid and the like are consistent, and the reliability and the accuracy of an analysis test are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of ion chromatographs, in particular to a column temperature box of an ion chromatograph. Background Art

[0002] Ion chromatography is a type of high performance liquid chromatography, and an ion chromatograph is mainly used for the analysis of environmental samples, including anions and cations in samples such as surface water, drinking water, rainwater, domestic sewage and industrial wastewater, acid precipitation and atmospheric particulate matter, and the analysis of trace impurities in water and reagents related to the microelectronics industry; the temperature of the chromatographic column and the mobile phase affects the separation balance of the components. In order to overcome the influence of the temperature of the mobile phase aqueous solution on the ion composition of the ion chromatography column, insulation measures must be taken for the ion chromatography column. Temperature is relatively important to the detection and analysis results of the ion chromatograph and cannot be ignored. The stability and accuracy of the ambient temperature must be controlled to ensure the reliability of the sample analysis results.

[0003] Because the valve body, guard column, and chromatographic column itself lack temperature monitoring components such as heaters and temperature sensors, the column oven has emerged as a crucial component, playing an irreplaceable role in modern ion chromatographs. However, current column ovens lack precision and cannot stably control the column's operating temperature, which can also reduce the column's sensitivity.

[0004] It can be seen that the current ion chromatograph column oven solution still has room for improvement. Optimization should be carried out to improve the controllability of the column oven, thereby helping the ion chromatograph maintain a better working state. Therefore, it is necessary to propose a more reasonable technical solution to solve the technical problems existing in the existing technology. Utility Model Content

[0005] In order to at least overcome one of the defects mentioned above, the present invention proposes a column oven for an ion chromatograph. By precisely controlling and adjusting the temperature inside the column oven, it is convenient to maintain the internal temperature environment of the column oven, provide a better working environment for the ion chromatograph, and thus ensure the working stability and reliability of the ion chromatograph.

[0006] In order to achieve the above technical effects, the column oven disclosed in the present utility model can adopt the following technical solutions:

[0007] A column oven for an ion chromatograph comprises a column oven structure and a column oven isotherm arranged in the column oven structure, a chromatographic column and a temperature control component are arranged on the column oven isotherm, a heat insulation structure is arranged in the column oven structure in conjunction with the column oven isotherm, and a valve component is also arranged to form a passage with the chromatographic column.

[0008] The column oven disclosed above adjusts the temperature environment inside the column oven through a temperature control component to achieve an environment suitable for the operation of the chromatographic column, improve the accuracy and reliability of the chromatograph, and at the same time maintain the stability of the environment inside the column oven through the insulation structure to reduce energy consumption.

[0009] Furthermore, the column oven isotherm can be constructed in a variety of forms and is not limited to a single form. Here, we optimize and propose one feasible option: the column oven isotherm includes a sheet-like main body, a temperature control component is disposed on one side of the main body, and a chromatographic column is disposed on the other side of the main body. When such a solution is adopted, the column oven isotherm extends along the length of the column oven structure and is laid within the column oven structure. Its length is greater than the length of the chromatographic column, thereby achieving a more balanced temperature within the column oven structure and enabling the chromatographic column to achieve a better overall working state. To better maintain the temperature environment, the isotherm is made of a metal material with good heat conductivity.

[0010] Furthermore, in the present invention, the temperature control component is used to maintain a suitable temperature environment in the column box structure. It can adopt a variety of schemes and is not limited to a single one. Here, it is optimized and one of the feasible options is proposed: the temperature control component includes a heating plate, a temperature control switch for controlling the power supply of the heating plate, a temperature sensor for monitoring the current temperature and a temperature control pressure plate for auxiliary fixation.

[0011] Furthermore, in the present invention, the mounting and securing method for the chromatographic column and the protective column is not limited to a single method. Here, an optimized and feasible option is proposed: the main body is provided with a plurality of mounting clip structures, which connect and secure the chromatographic column and the protective column via the mounting clip structures, and the protective column is connected between the valve assembly and the chromatographic column. In this solution, one or two mounting clips can be provided for each chromatographic column or protective column to enhance mounting and securing.

[0012] Furthermore, for the convenience of management, the chromatographic column is connected with a label card.

[0013] Furthermore, in the present invention, the column box structure can be constructed in a variety of forms and is not limited to a single one. Here, we optimize and propose one feasible option: the column box structure includes a box body and a box cover, wherein the box body and the box cover are aligned by a box body alignment structure, and both the box body and the box cover are provided with a thermal insulation structure. When such a solution is adopted, the box body alignment structure includes an alignment hole and an alignment axis; a first alignment hole can be provided in the box cover, and a first alignment axis can be provided in the box body. When such a solution is adopted, the thermal insulation structure on the box body is provided on the inner surface, and a thermal insulation pad can be used.

[0014] The box cover structure can be constructed in various forms, and is not limited to a single one. Here, we optimize and propose one feasible option: the box cover includes a detachable inner cover and an outer cover, with a spacer formed between the inner and outer covers for arranging a thermal insulation structure. In this solution, the thermal insulation structure is an intermediate thermal insulation layer disposed between the inner and outer covers, and a thermal insulation pad can be used.

[0015] Furthermore, the matching mode of the box body and the box cover can be optimized and is not limited to a single one. Here, one feasible option is proposed: the box body and the box cover are matched through a clamping structure, and the inner cover and the outer cover are connected and matched through anti-detachment bolts.

[0016] Furthermore, when the housing and lid are combined and sealed, to facilitate external observation of the internal chromatographic column's operating status, an optimization and feasible option is proposed: the inner and outer lids are provided with observation windows, respectively, and the observation windows are covered with a transparent member. In this solution, the transparent member can be glass or a transparent resin plate.

[0017] Furthermore, in the present invention, the valve assembly includes a mounting plate that fits within the column box structure, a valve body connected to the mounting plate, and a valve plate. An alignment structure is also provided between the mounting plate and the column box structure. In this embodiment, a hole-axis alignment structure is employed between the mounting plate and the column box structure. A second alignment hole can be provided on the column box structure, and a second alignment axis can be provided on the mounting plate. The valve body includes a switching valve located within the column box structure to preheat the liquid.

[0018] Compared with the prior art, some of the beneficial effects of the technical solution disclosed in this utility model include:

[0019] The utility model can accurately control the temperature and maintain it within an appropriate range by controlling and monitoring the temperature in the column box structure, so as to ensure the consistency of the temperature of the chromatographic column itself, the environment and the liquid, thereby ensuring the reliability and accuracy of the analytical test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only represent some embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 Schematic diagram of the overall structure of the column oven.

[0022] Figure 2 Schematic diagram of the internal structure of the column oven.

[0023] Figure 3 It is a structural diagram of the box.

[0024] Figure 4 Schematic diagram of the structure of the box cover.

[0025] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of AA.

[0026] Figure 6 A schematic diagram of the structure of one side of the isothermal body.

[0027] Figure 7 This is a schematic diagram of the structure of the other side of the isotherm.

[0028] Figure 8 Schematic diagram of the valve assembly.

[0029] In the above drawings, the meanings of the various reference numerals are as follows:

[0030] 1. Box body; 2. Cylindrical pin; 3. Pressing plate structure; 4. First pair of aligning axes; 5. Thermal insulation pad; 6. Heating plate; 7. Temperature sensor; 8. Temperature control switch; 9. Temperature control pressing plate; 10. Column box isotherm; 11. Mounting clamp; 12. Chromatographic column; 13. Guard column; 14. Label card; 15. Valve body; 16. Valve plate; 17. Mounting plate; 18. Second pair of aligning axes; 19. Box cover; 20. Inner cover; 21. Middle thermal insulation layer; 22. Outer cover; 23. Anti-slip bolts. DETAILED DESCRIPTION

[0031] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0032] In view of the many shortcomings of the existing chromatograph column oven, the following embodiments are optimized to overcome the defects in the prior art.

[0033] Example

[0034] like Figure 1 、 Figure 2 As shown, this embodiment provides a column oven for an ion chromatograph, which is used to improve the regulation, control, and monitoring of the temperature environment within the column oven, thereby helping to improve the stability and reliability of the chromatograph's operation. Specifically, the column oven provided in this embodiment includes a column oven structure and a column oven isothermal body 10 disposed within the column oven structure. The column oven isothermal body 10 is provided with a chromatographic column 12 and a temperature control assembly. The column oven structure is provided with a thermal insulation structure that cooperates with the column oven isothermal body 10, and also with a valve assembly that cooperates with the chromatographic column 12 to form a passage.

[0035] The column oven disclosed in this embodiment adjusts the temperature environment inside the column oven through a temperature control component to achieve an environment suitable for the operation of the chromatographic column 12, thereby improving the accuracy and reliability of the chromatograph. At the same time, the thermal insulation structure maintains the environment inside the column oven stable and reduces energy consumption.

[0036] like Figure 6 、 Figure 7 As shown, the column oven isotherm can be constructed in a variety of forms, which are not limited to a single one. This embodiment optimizes and adopts one feasible option: the column oven isotherm 10 includes a sheet-like main body, a temperature control assembly is disposed on one side of the main body, and the chromatographic column 12 is disposed on the other side of the main body. When adopting this solution, the column oven isotherm extends along the length of the column oven structure and is laid within the column oven structure. Its length is greater than the length of the chromatographic column 12, thereby achieving a more balanced temperature within the column oven structure and enabling the chromatographic column 12 to achieve optimal overall operating conditions. To better maintain the temperature environment, the isotherm is made of a metal material with excellent heat conductivity.

[0037] Preferably, the isothermal body can be made of aluminum alloy material.

[0038] In this embodiment, the temperature control component is used to maintain a suitable temperature environment in the column box structure. It can adopt a variety of solutions and is not limited to a single one. This embodiment is optimized and adopts one of the feasible options: the temperature control component includes a heating plate 6, a temperature control switch 8 for controlling the power supply of the heating plate 6, a temperature sensor 7 for monitoring the current temperature, and a temperature control pressure plate 9 for auxiliary fixation.

[0039] In this embodiment, the mounting and fixing method of the chromatographic column 12 and the protective column 13 is not limited to a single method. This embodiment optimizes and adopts one feasible option: a plurality of mounting clips 11 are provided on the main body, and the chromatographic column 12 and the protective column 13 are connected and fixed by the mounting clips 11. The protective column 13 is connected between the valve assembly and the chromatographic column 12. When this solution is adopted, one or two mounting clips 11 can be provided for each chromatographic column 12 or protective column 13 to enhance mounting and fixing.

[0040] For the convenience of management, the chromatographic column 12 is connected with a label card 14 .

[0041] like Figure 3 、 Figure 4 and Figure 5As shown, in this embodiment, the column box structure can be constructed in various forms, which are not limited to a single form. This embodiment optimizes and adopts one feasible option: the column box structure includes a box body 1 and a box cover 19. The box body 1 and the box cover 19 are aligned by the box body 1 alignment structure, and both the box body 1 and the box cover 19 are provided with a thermal insulation structure. When adopting this solution, the box body 1 alignment structure includes an alignment hole and an alignment axis; a first alignment hole can be provided in the box cover 19, and a first alignment axis 4 can be provided in the box body 1. When adopting this solution, the thermal insulation structure of the box body 1 is provided on the inner surface, and a thermal insulation pad 5 can be used.

[0042] Preferably, a pin structure is provided between the box body 1 and the box cover 19 for connection and positioning, specifically a cylindrical pin 2 can be used; at the same time, a tightening structure can be used for connection and fixation, specifically a pressing sheet structure 3 can be used.

[0043] The structure of the box cover 19 can be constructed in various forms and is not limited to a single one. This embodiment optimizes and adopts one feasible option: the box cover 19 includes a detachable inner cover 20 and an outer cover 22, with a spacer formed between the inner cover 20 and the outer cover 22 for arranging a thermal insulation structure. In this embodiment, the thermal insulation structure is an intermediate thermal insulation layer 21 disposed between the inner cover 20 and the outer cover 22, and a thermal insulation pad 5 can be used.

[0044] The matching mode of the box body 1 and the box cover 19 can be optimized and is not limited to a single one. This embodiment adopts one of the feasible options: the box body 1 and the box cover 19 are matched through a clamping structure, and the inner cover 20 and the outer cover 22 are connected and matched through anti-slip bolts 23.

[0045] When the housing 1 is closed with the lid 19, the present embodiment optimizes and adopts a feasible option to facilitate external observation of the working status of the internal chromatographic column 12: the inner lid 20 and the outer lid 22 are provided with observation windows, respectively, and the observation windows are covered with a transparent member. In this solution, the transparent member can be glass or a transparent resin plate.

[0046] like Figure 8 As shown, in this embodiment, the valve assembly comprises a mounting plate 17 that fits into the column box structure, a valve body 15 connected to the mounting plate 17, and a valve plate 16. An alignment structure is also provided between the mounting plate 17 and the column box structure. In this embodiment, a hole-axis alignment structure is employed between the mounting plate 17 and the column box structure. A second alignment hole can be provided on the column box structure, and a second alignment axis 18 can be provided on the mounting plate 17. The valve body 15 includes a switching valve located within the column box structure to preheat the liquid.

[0047] Preferably, the valve body 15 in this embodiment adopts a high-pressure six-way switching valve.

[0048] When the scheme disclosed in this embodiment is implemented, the liquid is in a preheated environment when it enters the column oven. The sample liquid enters the high-pressure six-way switching valve from the lower left port, and the eluent enters the high-pressure six-way switching valve from the lower right port, passes through the protective column 13 from the bottom in and out from the top, enters the chromatographic column 12 from the bottom in and out from the top, and finally flows out from the upper right port.

[0049] The above are the implementation methods listed in this embodiment, but this embodiment is not limited to the above optional implementation methods. Those skilled in the art can arbitrarily combine the above methods to obtain other various implementation methods. Anyone can derive other various implementation methods based on the inspiration of this embodiment. The above specific implementation methods should not be understood as limiting the scope of protection of this embodiment. The scope of protection of this embodiment should be based on the definition in the claims.

Claims

1. A column oven for an ion chromatograph, characterized in that: The invention comprises a column box structure and a column box isothermal body (10) arranged in the column box structure, a chromatographic column (12) and a temperature control component are arranged on the column box isothermal body (10), a heat insulation structure is arranged in the column box structure in conjunction with the column box isothermal body (10), and a valve component is also arranged to form a passage in conjunction with the chromatographic column (12).

2. The column oven of the ion chromatograph according to claim 1, characterized in that: The column box isothermal body (10) comprises a sheet-shaped main body, a temperature control component is arranged on one side of the main body, and a chromatographic column (12) is arranged on the other side of the main body.

3. The column oven of the ion chromatograph according to claim 2, characterized in that: The temperature control assembly includes a heating plate (6), a temperature control switch (8) for controlling the power supply of the heating plate (6), a temperature sensor (7) for monitoring the current temperature, and a temperature control pressure plate (9) for auxiliary fixing.

4. The column oven of the ion chromatograph according to claim 2, characterized in that: The main body is provided with a plurality of mounting clip (11) structures, and the chromatographic column (12) and the protective column (13) are connected and fixed by the mounting clip (11) structures, and the protective column (13) is connected between the valve assembly and the chromatographic column (12).

5. The column oven of the ion chromatograph according to claim 1, characterized in that: The chromatographic column (12) is connected to a label card (14).

6. The column oven of the ion chromatograph according to claim 1, characterized in that: The column box structure comprises a box body (1) and a box cover (19); the box body (1) and the box cover (19) are kept aligned by the box body (1) alignment structure, and both the box body (1) and the box cover (19) are provided with a heat insulation structure.

7. The column oven of the ion chromatograph according to claim 6, characterized in that: The box cover (19) comprises a detachable inner cover (20) and an outer cover (22), wherein a space is formed between the inner cover (20) and the outer cover (22) for arranging a heat insulation structure.

8. The column oven of the ion chromatograph according to claim 7, characterized in that: The box body (1) and the box cover (19) are matched through a pressing structure, and the inner cover (20) and the outer cover (22) are connected and matched through anti-slip bolts (23).

9. The column oven of the ion chromatograph according to claim 7, characterized in that: The inner cover (20) and the outer cover (22) are correspondingly provided with observation windows, which are covered with transparent parts.

10. The column oven of the ion chromatograph according to claim 1, characterized in that: The valve assembly comprises a mounting plate (17) fitted to the column box structure, a valve body (15) and a valve plate (16) connected to the mounting plate (17); an alignment structure is also provided between the mounting plate (17) and the column box structure.

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