Automatic sample injection chromatographic analysis system

Abstract

The utility model provides an automatic sample injection chromatographic analysis system which comprises a first detection device, a first chromatographic pump, a first quantitative loop, a ten-way valve, a second detection device, a second quantitative loop and a second chromatographic pump, and the ten-way valve comprises a sample injection valve port, a sample discharge valve port, a first liquid phase inlet, a first liquid phase outlet, a second liquid phase inlet and a second liquid phase outlet. The first quantitative loop is connected between the sample feeding valve port and the sample discharging valve port or between the first liquid phase inlet and the first liquid phase outlet in a switchable manner, and the second quantitative loop is connected between the sample feeding valve port and the sample discharging valve port or between the second liquid phase inlet and the second liquid phase outlet in a switchable manner. The automatic sample injection chromatographic analysis system can realize double-system sample injection and sample filling operation, is small in occupied area and less in interfaces, can also reduce connecting pipelines and reduce the liquid leakage risk, and is relatively simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of ion chromatography analysis, and more specifically, to an automatic sampling chromatography analysis system. Background Art

[0002] Ion detection includes anions and cations. In an advanced dual-channel ion chromatograph detector, the anion detection system and the cation detection system are integrated into one instrument. During use, samples are respectively injected into the anion system and the cation system to complete sample analysis. In the field of chromatographic detection, a dual-system automatic sampler connected to a dual-system ion chromatograph can achieve the functions of automatic sample extraction and separate injection into the anion and cation dual systems. The existing switching valve group of the dual-system automatic sampler is generally two two-position six-way switching valves, and each switching valve corresponds to a set of ion analysis systems, occupying a large space in the instrument. Moreover, the two six-way switching valves not only have 12 interfaces, but also require a large number of connecting pipelines, with a high risk of liquid leakage and a complex control system. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an automatic sampling chromatography analysis system, which can realize dual-system injection and sample filling operations, occupy a small area, have fewer interfaces, reduce the connecting pipelines, lower the risk of liquid leakage, and have a relatively simple structure.

[0004] The automatic sampling chromatography analysis system according to an embodiment of the utility model includes a first detection device, a first chromatographic pump, a first quantitative loop, a ten-way valve, a second detection device, a second quantitative loop, and a second chromatographic pump. The ten-way valve includes a sampling valve port, a sample outlet valve port, a first liquid phase inlet, a first liquid phase outlet, a second liquid phase inlet, and a second liquid phase outlet. The first liquid phase inlet is connected to the first chromatographic pump, the first liquid phase outlet is connected to the first detection device, the second liquid phase inlet is connected to the second chromatographic pump, and the second liquid phase outlet is connected to the second detection device. The first quantitative loop is switchably connected between the sampling valve port and the sample outlet valve port or between the first liquid phase inlet and the first liquid phase outlet. The second quantitative loop is switchably connected between the sampling valve port and the sample outlet valve port or between the second liquid phase inlet and the second liquid phase outlet.

[0005] Therefore, the automatic sampling chromatography analysis system according to an embodiment of the utility model can realize dual-system injection and sample filling operations by setting a ten-way valve to connect the first detection device, the first chromatographic pump, the first quantitative loop, the second detection device, the second quantitative loop, and the second chromatographic pump. It occupies a small area, has fewer interfaces, can reduce the connecting pipelines, lower the risk of liquid leakage, and has a relatively simple structure.

[0006] According to some embodiments of the present utility model, the ten-way valve further includes a first valve port, a second valve port, a third valve port, and a fourth valve port. The first metering loop is connected between the first valve port and the second valve port, and the second metering loop is connected between the third valve port and the fourth valve port.

[0007] According to some embodiments of the present utility model, the sample injection valve port is switchably connected to the first valve port or the sample output valve port. The first valve port is switchably connected to the sample injection valve port or the first liquid phase inlet. The second valve port is switchably connected to the first liquid phase outlet or the third valve port. The third valve port is switchably connected to the second valve port or the second liquid phase inlet. The fourth valve port is switchably connected to the sample output valve port or the second liquid phase outlet.

[0008] According to some embodiments of the present utility model, when the first valve port is connected to the sample injection valve port, the second valve port is connected to the third valve port, the fourth valve port is connected to the sample output valve port, the first liquid phase inlet is connected to the first liquid phase outlet, and the second liquid phase inlet is connected to the second liquid phase outlet.

[0009] According to some embodiments of the present utility model, when the first valve port is connected to the first liquid phase inlet, the second valve port is connected to the first liquid phase outlet, the third valve port is connected to the first liquid phase inlet, the fourth valve port is connected to the second liquid phase outlet, and the sample injection valve port is connected to the sample output valve port.

[0010] According to some embodiments of the present utility model, the sample injection valve port is switchably connected to the first valve port or the fourth valve port. The first valve port is switchably connected to the sample injection valve port or the first liquid phase inlet. The sample output valve port is switchably connected to the second valve port or the third valve port. The second valve port is switchably connected to the first liquid phase outlet or the third valve port. The third valve port is switchably connected to the sample output valve port and the second liquid phase outlet. The fourth valve port is switchably connected to the sample injection valve port and the second liquid phase inlet.

[0011] According to some embodiments of the present utility model, when the sample injection valve port is connected to the first valve port, the first liquid phase inlet is connected to the first liquid phase outlet, the second valve port is connected to the sample output valve port, the third valve port is connected to the second liquid phase outlet, and the fourth valve port is connected to the second liquid phase inlet.

[0012] According to some embodiments of the present utility model, when the sample injection valve port is connected to the fourth valve port, the first valve port is connected to the first liquid phase inlet, the second valve port is connected to the first liquid phase outlet, the sample output valve port is connected to the third valve port, and the second liquid phase outlet is connected to the second liquid phase inlet.

[0013] According to some embodiments of the present utility model, the sample injection valve port, the first valve port, the first liquid phase inlet, the first liquid phase outlet, the second valve port, the sample outlet valve port, the third valve port, the second liquid phase outlet, the second liquid phase inlet, and the fourth valve port are sequentially and spaced apart along the circumferential direction of the ten-way valve body.

[0014] According to some embodiments of the present utility model, the first detection device includes a first analytical column, a first suppressor, and a first conductivity cell that are sequentially connected, and the second detection device includes a second analytical column, a second suppressor, and a second conductivity cell that are sequentially connected. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of the filling stage of an automatic sampling chromatographic analysis system according to some embodiments of the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the sample injection stage of an automatic sampling chromatographic analysis system according to some embodiments of the present utility model;

[0018] Figure 3 It is a schematic structural diagram of the first detection device filling and the second detection device injecting samples of an automatic sampling chromatographic analysis system according to some other embodiments of the present utility model;

[0019] Figure 4 It is a schematic structural diagram of the second detection device filling and the first detection device injecting samples of an automatic sampling chromatographic analysis system according to some other embodiments of the present utility model.

[0020] Reference Signs:

[0021] 1000: Automatic sampling chromatographic analysis system;

[0022] 100: Ten-way valve;

[0023] 10: Sample injection valve port, 11: Sample outlet valve port, 12: First liquid phase inlet, 13: First liquid phase outlet, 14: Second liquid phase inlet, 15: Second liquid phase outlet, 16: First valve port, 17: Second valve port, 18: Third valve port, 19: Fourth valve port;

[0024] 20: First detection device, 21: First analytical column, 22: First suppressor, 23: First conductivity cell;

[0025] 30: Second detection device, 31: Second analytical column, 32: Second suppressor, 33: Second conductivity cell;

[0026] 41: First quantitative loop, 42: Second quantitative loop, 43: First chromatographic pump, 44: Second chromatographic pump. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. 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.

[0029] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model.

[0031] In addition, if terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0032] It should be noted that the features in the embodiments of the present utility model can be combined with each other without conflict.

[0033] Now refer to the accompanying drawings to describe the automatic sampling chromatographic analysis system 1000 provided according to the embodiments of the present utility model. Combine Figures 1 - 4As shown in the figure, the automatic sampling chromatographic analysis system 1000 provided according to the embodiments of the present utility model may include a first detection device 20, a first chromatographic pump 43, a first quantitative loop 41, a ten-port valve 100, a second detection device 30, a second quantitative loop 42, and a second chromatographic pump 44. The automatic sampling chromatographic analysis system 1000 can realize dual-system sampling detection, and has a simple structure, a small volume, reduces the connecting pipelines, and reduces the leakage risk.

[0034] Among them, the ten-port valve 100 includes a sampling valve port 10, a sample outlet valve port 11, a first liquid phase inlet 12, a first liquid phase outlet 13, a second liquid phase inlet 14, and a second liquid phase outlet 15. The first liquid phase inlet 12 is connected to the first chromatographic pump 43, the first liquid phase outlet 13 is connected to the first detection device 20, the second liquid phase inlet 14 is connected to the second chromatographic pump 44, the second liquid phase outlet 15 is connected to the second detection device 30. The first quantitative loop 41 is switchably connected between the sampling valve port 10 and the sample outlet valve port 11 or between the first liquid phase inlet 12 and the first liquid phase outlet 13. The second quantitative loop 42 is switchably connected between the sampling valve port 10 and the sample outlet valve port 11 or between the second liquid phase inlet 14 and the second liquid phase outlet 15.

[0035] Specifically, the first detection device 20 and the second detection device 30 can be respectively anion and cation detection systems. For example, the first detection device 20 can be an anion detection and analysis device, the second detection device 30 can be a cation analysis and detection device, or the first detection device 20 can be a cation analysis and detection device, and the second detection device 30 can be an anion analysis and detection device. The first chromatographic pump 43 and the second chromatographic pump 44 are used to provide power for the transportation of the mobile phase.

[0036] The ten-port valve 100 is respectively connected to the first detection device 20, the second detection device 30, the first chromatographic pump 43, the second chromatographic pump 44, the first quantitative loop 41, and the second quantitative loop 42. The first liquid phase inlet 12 and the first liquid phase outlet 13 are respectively connected to the first chromatographic pump 43 and the first detection device 20. The second liquid phase outlet 15 and the second liquid phase inlet 14 are respectively connected to the second chromatographic pump 44 and the second detection device 30. The first quantitative loop 41 and the second quantitative loop 42 can be selectively connected between the sampling valve port 10 and the sample outlet valve port 11, or the first quantitative loop 41 is connected between the first liquid phase inlet 12 and the first liquid phase outlet 13, and the second quantitative loop 42 is connected between the second liquid phase inlet 14 and the second liquid phase outlet 15 to realize sampling and sample filling.

[0037] For example, the first metering loop 41 can be connected to the sample injection valve port 10 and the sample outlet valve port 11 respectively. The sample enters the first metering loop 41 through the sample injection valve port 10, and the excess sample can flow out from the sample outlet valve port 11. At this time, the first liquid phase inlet 12 can be connected to the first liquid phase outlet 13 to transport the mobile phase to the first detection device 20 under the power of the first chromatographic pump 43; when the first metering loop 41 is switched to be connected to the first liquid phase inlet 12 and the first liquid phase outlet 13 respectively, the mobile phase can transport the sample in the first metering loop 41 to the first detection device 20. At this time, the sample injection valve port 10 can be connected to the sample outlet valve port 11, and the excess sample flows from the sample injection valve port 10 to the sample outlet valve port 11. Among them, the sample injection valve port 10 can be connected to the sample source, and the sample outlet valve port 11 can be connected to the waste liquid pipeline.

[0038] Similarly, the second metering loop 42 can be connected to the sample injection valve port 10 and the sample outlet valve port 11 respectively. The sample enters the second metering loop 42 through the sample injection valve port 10, and the excess sample can flow out from the sample outlet valve port 11. At this time, the second liquid phase inlet 14 can be connected to the second liquid phase outlet 15 to transport the mobile phase to the second detection device 30 under the power of the second chromatographic pump 44; when the second metering loop 42 is switched to be connected to the second liquid phase inlet 14 and the second liquid phase outlet 15 respectively, the mobile phase can transport the sample in the second metering loop 42 to the second detection device 30. At this time, the sample injection valve port 10 can be connected to the sample outlet valve port 11, and the excess sample flows from the sample injection valve port 10 to the sample outlet valve port 11. Among them, the sample injection valve port 10 can be connected to the sample source, and the sample outlet valve port 11 can be connected to the waste liquid pipeline.

[0039] Thus, according to the automatic sampling chromatographic analysis system 1000 provided by the embodiment of the present invention, by setting the ten-way valve 100 to connect the first detection device 20, the first chromatographic pump 43, the first metering loop 41, the second detection device 30, the second metering loop 42 and the second chromatographic pump 44, the dual-system sampling and sample filling operations can be realized, with a small occupied area and few interfaces. It can also reduce the connecting pipelines, lower the risk of liquid leakage, and has a relatively simple structure.

[0040] In some embodiments of the present utility model, the ten-way valve 100 further includes a first valve port 16, a second valve port 17, a third valve port 18, and a fourth valve port 19. The first metering loop 41 is connected between the first valve port 16 and the second valve port 17, and the second metering loop 42 is connected between the third valve port 18 and the fourth valve port 19. In this way, by switching the connection between the first valve port 16 and the second valve port 17 and other valve ports of the ten-way valve 100, the first metering loop 41 can be switchably connected to the injection valve port 10 and the sample outlet valve port 11, or connected to the first liquid phase inlet 12 and the second liquid phase outlet 15. By switching the connection between the third valve port 18 and the fourth valve port 19 and other valve ports, the second metering loop 42 can be switchably connected to the sample outlet valve port 11 and the injection valve port 10, or connected to the second liquid phase inlet 14 and the second liquid phase outlet 15. Thus, the injection and filling operations of the dual system are realized by switching between the valve ports of the ten-way valve 100.

[0041] In some embodiments of the present utility model, as Figure 1 and Figure 2 shown, the injection valve port 10 is switchably connected to the first valve port 16 or the sample outlet valve port 11. The first valve port 16 is switchably connected to the injection valve port 10 or the first liquid phase inlet 12. The second valve port 17 is switchably connected to the first liquid phase outlet 13 or the third valve port 18. The third valve port 18 is switchably connected to the second valve port 17 or the second liquid phase inlet 14. The fourth valve port 19 is switchably connected to the sample outlet valve port 11 or the second liquid phase outlet 15.

[0042] Specifically, as Figure 1 shown, when the first valve port 16 is connected to the injection valve port 10, the second valve port 17 is connected to the third valve port 18, the fourth valve port 19 is connected to the sample outlet valve port 11, the first liquid phase inlet 12 is connected to the first liquid phase outlet 13, and the second liquid phase inlet 14 is connected to the second liquid phase outlet 15. In this way, the injection valve port 10, the first valve port 16, the first metering loop 41, the second valve port 17, the third valve port 18, the second metering loop 42, the fourth valve port 19, and the sample outlet valve port 11 are sequentially connected and conducted. The sample flows through the injection valve port 10 and the first valve port 16 to the first metering loop 41, then to the second valve port 17 and the third valve port 18, and then to the second metering loop 42. Then the excess sample can flow to the sample outlet valve port 11 and be discharged, thereby realizing the simultaneous filling of the first metering loop 41 and the second metering loop 42. At this time, the first liquid phase inlet 12 and the first liquid phase outlet 13 are connected, and the first chromatographic pump 43 transports the mobile phase to the first detection device 20. The second liquid phase inlet 14 and the second liquid phase outlet 15 are connected, and the second chromatographic pump 44 transports the mobile phase to the second detection device 30.

[0043] As Figure 2As shown, when the first valve port 16 is connected to the first liquid phase inlet 12, the second valve port 17 is connected to the first liquid phase outlet 13, the third valve port 18 is connected to the second liquid phase inlet 14, the fourth valve port 19 is connected to the second liquid phase outlet 15, and the injection valve port 10 is connected to the sample outlet valve port 11. At this time, the first liquid phase inlet 12 is connected to the first chromatographic pump 43 and the first valve port 16, and the first liquid phase outlet 13 is connected to the second valve port 17 and the first detection device 20. Thus, the sample in the first quantitative loop 41 is transported by the mobile phase pumped by the first chromatographic pump 43 through the second valve port 17 and the first liquid phase outlet 13 to the first detection device 20; the second liquid phase inlet 14 is connected to the second chromatographic pump 44 and the third valve port 18, and the second liquid phase outlet 15 is connected to the fourth valve port 19 and the second detection device 30. Thus, the sample in the second quantitative loop 42 is transported by the mobile phase pumped by the second chromatographic pump 44 through the fourth valve port 19 and the second liquid phase outlet 15 to the second detection device 30, thereby realizing simultaneous injection of the first detection device 20 and the second detection device 30.

[0044] Thus, according to Figures 1 - 2 the example shown, the automatic injection chromatographic analysis system 1000 of the embodiment of the present invention can switch between Figure 1 and Figure 2 the two modes shown, where Figure 1 the connection mode of each valve port can realize simultaneous sample filling of the first quantitative loop 41 and the second quantitative loop 42, that is, in the stage of simultaneous sample filling of the dual systems, Figure 2 the connection mode of each valve port can realize transporting the samples in the first quantitative loop 41 and the second quantitative loop 42 to the first detection device 20 and the second detection device 30, that is, in the stage of simultaneous injection of the dual systems; optionally, as Figure 1 and 2 shown, the injection valve port 10, the first valve port 16, the first liquid phase inlet 12, the first liquid phase outlet 13, the second valve port 17, the third valve port 18, the second liquid phase inlet 14, the second liquid phase outlet 15, the fourth valve port 19 and the sample outlet valve port 11 can be sequentially arranged along the circumferential direction of the ten-port valve 100. For example, the body of the ten-port valve 100 can be formed as a circle, and the injection valve port 10, the first valve port 16, the first liquid phase inlet 12, the first liquid phase outlet 13, the second valve port 17, the third valve port 18, the second liquid phase inlet 14, the second liquid phase outlet 15, the fourth valve port 19 and the sample outlet valve port 11 can be sequentially and evenly spaced along the circumferential direction of the ten-port valve 100, thereby facilitating the switching connection of each valve port and the connection with the first detection device 20, the first chromatographic pump 43, the first quantitative loop 41, the second detection device 30, the second quantitative loop 42 and the second chromatographic pump 44, and also facilitating the connection setting of the pipelines.

[0045] In some other embodiments of the present invention, as Figure 3 and Figure 4As shown, the injection valve port 10 is switchably connected to the first valve port 16 or the fourth valve port 19. The first valve port 16 is switchably connected to the injection valve port 10 or the first liquid phase inlet 12. The sample injection valve port 11 is switchably connected to the second valve port 17 or the third valve port 18. The second valve port 17 is switchably connected to the first liquid phase outlet 13 or the third valve port 18. The third valve port 18 is switchably connected to the sample injection valve port 11 and the second liquid phase outlet 15. The fourth valve port 19 is switchably connected to the injection valve port 10 and the second liquid phase inlet 14.

[0046] Specifically, as Figure 3 shown, when the injection valve port 10 is connected to the first valve port 16, the first liquid phase inlet 12 is connected to the first liquid phase outlet 13, the second valve port 17 is connected to the sample injection valve port 11, the third valve port 18 is connected to the second liquid phase outlet 15, and the fourth valve port 19 is connected to the second liquid phase inlet 14.

[0047] In this way, the injection valve port 10, the first valve port 16, the first metering loop 41, the second valve port 17, and the sample injection valve port 11 are sequentially connected and conducted. The sample flows through the injection valve port 10 and the first valve port 16 to the first metering loop 41, and the excess sample can flow to the sample injection valve port 11 and be discharged to achieve the filling of the first metering loop 41. At this time, the first liquid phase inlet 12 and the first liquid phase outlet 13 are connected, and the first chromatographic pump 43 transports the mobile phase to the first detection device 20. The second liquid phase inlet 14, the fourth valve port 19, the second metering loop 42, the third valve port 18, and the second liquid phase outlet 15 are sequentially connected and conducted. The second chromatographic pump 44 pumps the mobile phase and flows to the second metering loop 42, and the sample in the second metering loop 42 can be transported to the second detection device 30 through the third valve port 18 and the second liquid phase outlet 15, so as to achieve the filling of the first metering loop 41 and the sample injection operation of the second detection device 30.

[0048] As Figure 4 shown, when the injection valve port 10 is connected to the fourth valve port 19, the first valve port 16 is connected to the first liquid phase inlet 12, the second valve port 17 is connected to the first liquid phase outlet 13, the sample injection valve port 11 is connected to the third valve port 18, and the second liquid phase outlet 15 is connected to the second liquid phase inlet 14.

[0049] In this way, the sample injection valve port 10, the fourth valve port 19, the second metering loop 42, the third valve port 18, and the sample outlet valve port 11 are connected and conducted in sequence. The sample flows from the sample injection valve port 10 and the fourth valve port 19 to the second metering loop 42, and the excess sample can flow to the sample outlet valve port 11 for discharge, so as to achieve the filling of the second metering loop 42; at this time, the second liquid phase inlet 14 and the second liquid phase outlet 15 are connected, and the second chromatographic pump 44 transports the mobile phase to the second detection device 30; the first liquid phase inlet 12, the first valve port 16, the first metering loop 41, the second valve port 17, and the first liquid phase outlet 13 are connected and conducted in sequence. The first chromatographic pump 43 pumps the mobile phase and flows to the first metering loop 41, and the sample in the first metering loop 41 can be transported to the first detection device 20 through the second valve port 17 and the first liquid phase outlet 13, so as to achieve the filling of the second metering loop 42 and the sample injection operation of the first detection device 20.

[0050] Thus, according to Figures 3 - 4 the example shown, the automatic injection chromatographic analysis system 1000 of the embodiment of the present invention can switch between Figure 3 and Figure 4 the two modes shown, where Figure 3 the shown is the mode of filling the first metering loop 41 of the dual system and injecting the sample into the second detection device 30, Figure 4 the shown is the mode of filling the second metering loop 42 in the dual system and injecting the sample into the first detection device 20.

[0051] Optionally, as Figure 3 and Figure 4 shown, the sample injection valve port 10, the first valve port 16, the first liquid phase inlet 12, the first liquid phase outlet 13, the second valve port 17, the sample outlet valve port 11, the third valve port 18, the second liquid phase outlet 15, the second liquid phase inlet 14, and the fourth valve port 19 are sequentially and spaced apart along the circumferential direction of the ten-port valve 100 body, which not only facilitates the switching connection of each valve port of the ten-port valve 100 and the connection with the first detection device 20, the first chromatographic pump 43, the first metering loop 41, the second detection device 30, the second metering loop 42, and the second chromatographic pump 44, but also facilitates the layout of the pipeline.

[0052] In some specific examples, as Figures 1 - 4 shown, the first detection device 20 includes a first analytical column 21, a first suppressor 22, and a first conductivity cell 23 connected in sequence; the second detection device 30 includes a second analytical column 31, a second suppressor 32, and a second conductivity cell 33 connected in sequence. The analytical column can be used to separate sample components, and the suppressor is mainly used to reduce the detection background value and improve the response of the ions to be measured by means of electrolytic suppression or chemical suppression: the conductivity cell is used to measure the conductivity of the solution when it flows through the conductivity cell electrode to detect the sample components. The first detection device 20 and the second detection device 30 can be applied to the detection of two systems and can be respectively used for the analysis and detection of anions and cations.

[0053] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the said claims.

Claims

1. An automatic sampling chromatographic analysis system, characterized in that: The invention comprises a first detection device, a first chromatographic pump, a first quantitative ring, a ten-way valve, a second detection device, a second quantitative ring and a second chromatographic pump, wherein the ten-way valve comprises an injection valve port, an outlet valve port, a first liquid phase inlet, a first liquid phase outlet, a second liquid phase inlet and a second liquid phase outlet, wherein the first liquid phase inlet is connected to the first chromatographic pump, the first liquid phase outlet is connected to the first detection device, the second liquid phase inlet is connected to the second chromatographic pump, the second liquid phase outlet is connected to the second detection device, the first quantitative ring is switchably connected between the injection valve port and the outlet valve port or between the first liquid phase inlet and the first liquid phase outlet, and the second quantitative ring is switchably connected between the injection valve port and the outlet valve port or between the second liquid phase inlet and the second liquid phase outlet.

2. The automatic sampling chromatographic analysis system according to claim 1, characterized in that: The ten-way valve further comprises a first valve port, a second valve port, a third valve port and a fourth valve port, the first quantitative ring is connected between the first valve port and the second valve port, and the second quantitative ring is connected between the third valve port and the fourth valve port.

3. The automatic sampling chromatographic analysis system according to claim 2, characterized in that: The injection valve port can be switchably connected to the first valve port or the outlet valve port, the first valve port can be switchably connected to the injection valve port or the first liquid phase inlet, the second valve port can be switchably connected to the first liquid phase outlet or the third valve port, the third valve port can be switchably connected to the second valve port or the second liquid phase inlet, and the fourth valve port can be switchably connected to the outlet valve port or the second liquid phase outlet.

4. The automatic sampling chromatographic analysis system according to claim 3, characterized in that: When the first valve port is connected to the injection valve port, the second valve port is connected to the third valve port, the fourth valve port is connected to the outlet valve port, the first liquid phase inlet is connected to the first liquid phase outlet, and the second liquid phase inlet is connected to the second liquid phase outlet.

5. The automatic sampling chromatographic analysis system according to claim 4, characterized in that: When the first valve port is connected to the first liquid phase inlet, the second valve port is connected to the first liquid phase outlet, the third valve port is connected to the first liquid phase inlet, the fourth valve port is connected to the second liquid phase outlet, and the injection valve port is connected to the outlet valve port.

6. The automatic sampling chromatographic analysis system according to claim 2, characterized in that: The injection valve port is switchably connected to the first valve port or the fourth valve port, the first valve port is switchably connected to the injection valve port or the first liquid phase inlet, the outlet valve port is switchably connected to the second valve port or the third valve port, the second valve port is switchably connected to the first liquid phase outlet or the third valve port, the third valve port is switchably connected to the outlet valve port and the second liquid phase outlet, and the fourth valve port is switchably connected to the injection valve port and the second liquid phase inlet.

7. The automatic sampling chromatographic analysis system according to claim 6, characterized in that: When the injection valve port is connected to the first valve port, the first liquid phase inlet is connected to the first liquid phase outlet, the second valve port is connected to the outlet valve port, the third valve port is connected to the second liquid phase outlet, and the fourth valve port is connected to the second liquid phase inlet.

8. The automatic sampling chromatographic analysis system according to claim 7, characterized in that: When the injection valve port is connected to the fourth valve port, the first valve port is connected to the first liquid phase inlet, the second valve port is connected to the first liquid phase outlet, the outlet valve port is connected to the third valve port, and the second liquid phase outlet is connected to the second liquid phase inlet.

9. The automatic sampling chromatography analysis system according to claim 6, characterized in that: The injection valve port, the first valve port, the first liquid phase inlet, the first liquid phase outlet, the second valve port, the outlet valve port, the third valve port, the second liquid phase outlet, the second liquid phase inlet, and the fourth valve port are sequentially spaced apart along the circumference of the ten-way valve body.

10. The automatic sampling chromatography analysis system according to claim 1, characterized in that: The first detection device includes a first analytical column, a first suppressor, and a first conductivity cell connected in sequence, and the second detection device includes a second analytical column, a second suppressor, and a second conductivity cell connected in sequence.

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