Sample introduction device for ion chromatography analysis test

Abstract

The application provides a sample introduction device for ion chromatography analysis test, comprising: a sample introduction disc, the top of which is circumferentially provided with a plurality of placing racks for placing sample tubes; the temperature control assembly circumferentially covers the plurality of placing racks, the temperature control assembly is rotatably connected with the sample introduction disc, and cooling water circulates in the temperature control assembly; meanwhile, a sampling opening is formed in the temperature control assembly, the sample tube is placed in the placing frame through the sampling opening, and meanwhile, sampling is conducted in the sample tube through the sampling opening in the testing process for testing; by means of the structure, in the testing process, the testing sample in the sample tube is kept in a low-temperature state through the temperature control assembly, decomposition of salt in the testing sample is slowed down, the content of the salt can be determined in the testing process, and the testing result is more accurate.

Description

Technical Field

[0001] The present application generally relates to the technical field of sample injection devices, and in particular to a sample injection device for ion chromatography analysis and testing. Background Art

[0002] Ion chromatography (IC) is an efficient, sensitive, and easy-to-use analytical tool suitable for ion analysis in a variety of complex samples. It has broad application prospects and important practical significance. It is primarily used for analyzing cations and anions in aqueous solutions. The structure of an ion chromatograph typically includes an eluent system, a detection system, a chromatographic pump system, an injection system, a flow system, a separation system, a chemical suppression system, and a data processing system.

[0003] Currently, ultrapure water or solvent is generally used for dilution and injection in electrolyte testing. During the ultrapure water dilution and injection process, the salt components in the electrolyte will decompose at room temperature, and its content cannot be determined during the test process, resulting in inaccurate analysis of components and contents. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a sample injection device for ion chromatography analysis and testing that can solve the above-mentioned technical problems.

[0005] The present application provides a sample injection device for ion chromatography analysis test, comprising:

[0006] A sample feeding tray, wherein a plurality of placement racks are provided on the top circumference of the sample feeding tray, and the placement racks are used to place sample tubes;

[0007] A temperature control component, wherein the circumferential cover of the temperature control component is arranged on the plurality of the placement racks, and the temperature control component is rotatably connected to the sample feeding tray; a sampling port is arranged on the temperature control component, and cooling water circulates in the temperature control component.

[0008] According to the technical solution provided in this application, the temperature control component includes: a temperature control cover and a constant temperature water machine, the circumferential cover of the temperature control cover is arranged on multiple placement racks, and the temperature control cover is rotatably connected to the sampling tray; the sampling port is arranged on the temperature control cover; a first space is arranged inside the temperature control cover, and the two ends of the sampling port are respectively provided with a water inlet and a water outlet connected to the first space; the water inlet and the water outlet are respectively connected to the constant temperature water machine, and the constant temperature water machine is used to circulate cooling water to the first space.

[0009] According to the technical solution provided in this application, the temperature control component also includes: an outer turntable, which is sleeved on the outer wall of the sample injection tray and is rotatably connected to the sample injection tray; one end of the temperature control cover is fixedly connected to the outer turntable, and the other end is placed above the sample injection tray.

[0010] According to the technical solution provided in this application, the outer wall of the temperature control cover is made of thermal insulation material.

[0011] According to the technical solution provided in this application, the inner wall of the temperature control cover is made of heat-conducting material.

[0012] According to the technical solution provided in this application, the water inlet and the water outlet are respectively connected to the constant temperature water machine through connecting pipes.

[0013] According to the technical solution provided in the present application, a driving device is provided at the bottom of the sample feeding tray, and the driving device is used to drive the sample feeding tray to rotate.

[0014] According to the technical solution provided in the present application, the driving device is a driving motor, and the driving end of the driving motor is fixedly connected to the sample feeding tray.

[0015] The beneficial effects of this application are:

[0016] The present application provides a sampling device for ion chromatography analysis test, comprising: a sampling tray, a plurality of placement racks are circumferentially arranged on the top of the sampling tray, and the placement racks are used to place sample tubes; a circumferential cover of the temperature control component is arranged on the plurality of placement racks, the temperature control component is rotatably connected to the sampling tray, and cooling water circulates in the temperature control component; at the same time, a sampling port is provided on the temperature control component, and the sample tube is placed into the placement rack through the sampling port, and samples are taken from the sample tube for testing during the test process through the sampling port; through the above structure, during the test process of the present application, the test sample in the sample tube is maintained at a low temperature through the temperature control component, the decomposition of salt in the test sample is slowed down, its content can be determined during the test process, and the test result is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 This is a cross-sectional view of a sample injection device for ion chromatography analysis provided by the present application;

[0019] Figure 2 This is a top view of a sampling device for ion chromatography analysis and testing provided by this application.

[0020] In the figure: 1. Sample feeding plate; 2. External turntable; 3. Temperature control cover; 31. Inner wall; 32. Outer wall; 4. Sample tube; 5. Placement rack; 6. Water inlet; 7. Water outlet; 8. First space. DETAILED DESCRIPTION

[0021] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] Example 1

[0024] Please refer to Figure 1-Figure 2 , the present application provides a sampling device for ion chromatography analysis test, comprising:

[0025] The sample tray 1 has a plurality of placement racks 5 arranged around the top of the sample tray 1 for placing sample tubes 4;

[0026] The temperature control component, the circumferential cover of the temperature control component is arranged on a plurality of placement racks 5, the temperature control component is rotatably connected to the sample feeding tray 1; a sampling port is arranged on the temperature control component, and cooling water circulates in the temperature control component.

[0027] Specifically, there is a second space between the temperature control assembly and the top of the placement rack 5; optionally, each placement rack 5 has a placement groove, one end of the sample tube 4 is placed in the placement groove, and the other end is placed in the second space;

[0028] Specifically, before starting the test, the temperature control assembly is rotated to expose multiple placement racks 5 from the sampling port in sequence to place the sample tube 4; similarly, during the test, the sampling device is placed at the bottom of the sampling needle, and the sampling port is aligned with the sampling needle. At this time, the temperature control assembly is kept stationary, and the sampling tray 1 is rotated to expose the sample tube 4 at the sampling port. At this time, the sampling needle takes a sample from the sample tube 4 for testing;

[0029] Working principle: During the test process, the present application maintains the test sample in the sample tube 4 at a low temperature through the temperature control component, slowing down the decomposition of salt in the test sample. Its content can be determined during the test process, making the test results more accurate.

[0030] In some embodiments, the temperature control component includes: a temperature control cover 3 and a constant temperature water machine, the temperature control cover 3 is circumferentially arranged on multiple placement racks 5, and the temperature control cover 3 is rotatably connected to the sampling tray 1; the sampling port is arranged on the temperature control cover 3; a first space 8 is arranged inside the temperature control cover 3, and the two ends of the sampling port are respectively provided with a water inlet 6 and a water outlet 7 connected to the first space 8; the water inlet 6 and the water outlet 7 are respectively connected to the constant temperature water machine, and the constant temperature water machine is used to circulate cooling water to the first space 8.

[0031] Specifically, such as Figure 1 As shown, the temperature control cover 3 is an inverted U-shape; the constant temperature water machine circulates cooling water into the first space 8 to cool the sample tube 4 inside the temperature control cover 3 while ensuring the recycling of the cooling water;

[0032] Specifically, the constant temperature water machine can choose to use a reciprocating refrigeration compressor, a rotary refrigerator, a spiral refrigerator, a rotor refrigerator, an air-cooled refrigerator, an evaporative refrigerator, a water-cooled refrigerator, etc.; in this embodiment, a water-cooled refrigerator is used, and the cooling water is transported to the first space 8 through a circulating pump, thereby taking away the heat of the sample tube 4 and achieving temperature control.

[0033] In some embodiments, the temperature control assembly further includes: an outer turntable 2, which is sleeved on the outer wall of the sample injection tray 1; one end of the temperature control cover 3 is fixedly connected to the outer turntable 2, and the other end is placed above the sample injection tray 1.

[0034] Specifically, the temperature control component also includes: an outer turntable 2, which is sleeved on the outer wall of the sampling tray 1; one end of the temperature control cover 3 is fixedly connected to the outer turntable 2, and the other end is placed above the sampling tray 1, that is, it is not connected to the sampling tray 1; before starting the test, the outer turntable 2 is rotated, and the outer turntable 2 drives the temperature control cover 3 to rotate, so that multiple placement racks 5 are exposed from the sampling port in turn, which is convenient for placing the sample tube 4; then, during the test, the sampling port is aligned with the sampling needle and placed, at this time, the outer turntable 2 is ensured to remain stationary, and the sampling tray 1 is rotated so that the sample tube 4 is exposed at the sampling port, and the sampling needle takes samples in the sample tube 4 for testing; and after the sampling is completed, the tested sample tube 4 is taken out from the placement rack 5, and a new sample tube 4 is placed for testing, so as to achieve continuous sampling, increase the sample processing capacity, and improve the accuracy of daily work.

[0035] In some embodiments, the outer wall 32 of the temperature control cover 3 is made of heat-insulating material.

[0036] Specifically, since the temperature control cover 3 is used to cool the sample tube 4, the outer wall 32 of the temperature control cover 3 is set to a thermal insulation material to ensure the temperature of the cooling water in the first space 8; in this embodiment, the outer wall 32 of the temperature control cover 3 is an inorganic thermal insulation material, an organic thermal insulation material, or a metal composite thermal insulation material.

[0037] In some embodiments, the inner wall 31 of the temperature control cover 3 is made of a heat-conducting material.

[0038] Specifically, since the temperature control cover 3 is used to cool the sample tube 4, the inner wall 31 of the temperature control cover 3 is set to a heat-conductive material to more fully transfer the temperature of the cooling water in the first space 8 to the sample tube 4, thereby cooling the sample tube 4; in this embodiment, the inner wall 31 of the temperature control cover 3 is a heat-conductive material made of metal materials such as silver and copper, or a heat-conductive material made of non-metallic materials such as graphite and carbon nanotubes.

[0039] In some embodiments, the water inlet 6 and the water outlet 7 are respectively connected to a constant temperature water machine through connecting pipes.

[0040] Specifically, the water inlet 6 and the water outlet 7 are respectively connected to the constant temperature water machine through connecting pipes; in some embodiments, the connecting pipes are durable low-temperature water pipes, such as: PEX water pipes, PPR water pipes, PB pipes, PVC pipes, etc.; in this embodiment, the connecting water pipes are PEX water pipes.

[0041] In certain embodiments, a driving device is provided at the bottom of the sample injection tray 1 , and the driving device is used to drive the sample injection tray 1 to rotate.

[0042] Specifically, a driving device is provided at the bottom of the sample tray 1, and the driving device is a driving motor, and the driving end of the driving motor is fixedly connected to the sample tray 1; during the test process, the driving device drives the sample tray 1 to rotate so that the sample tube 4 is exposed at the sampling port to improve the sampling efficiency, and at the same time, ensure that each sample tube 4 is sampled by the sampling needle, thereby ensuring the accuracy of the test results.

[0043] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A sampling device for ion chromatography analysis, characterized in that: include: A sample feeding tray (1), wherein a plurality of placement racks (5) are provided circumferentially on the top of the sample feeding tray (1), and the placement racks (5) are used to place sample tubes (4); A temperature control component, wherein the circumferential cover of the temperature control component is arranged on the plurality of placement racks (5), and the temperature control component is rotatably connected to the sample feeding tray (1); a sampling port is arranged on the temperature control component, and cooling water circulates in the temperature control component.

2. The sample injection device for ion chromatography analysis according to claim 1, characterized in that: The temperature control component comprises: a temperature control cover (3) and a constant temperature water machine, wherein the temperature control cover (3) is circumferentially arranged on a plurality of the placement racks (5), and the temperature control cover (3) is rotatably connected to the sample feeding tray (1); the sampling port is arranged on the temperature control cover (3); a first space (8) is arranged inside the temperature control cover (3), and a water inlet (6) and a water outlet (7) communicating with the first space (8) are respectively arranged at both ends of the sampling port; the water inlet (6) and the water outlet (7) are respectively connected to the constant temperature water machine, and the constant temperature water machine is used to circulate cooling water to the first space (8).

3. The sample injection device for ion chromatography analysis according to claim 2, characterized in that: The temperature control assembly further comprises: an outer turntable (2), the outer turntable (2) being sleeved on the outer wall of the sample feed tray (1), the outer turntable (2) being rotatably connected to the sample feed tray (1); one end of the temperature control cover (3) being fixedly connected to the outer turntable (2), and the other end being placed above the sample feed tray (1).

4. The sample injection device for ion chromatography analysis according to claim 2, characterized in that: The outer wall (32) of the temperature control cover (3) is made of heat-insulating material.

5. The sample injection device for ion chromatography analysis according to claim 2, characterized in that: The inner wall (31) of the temperature control cover (3) is made of a heat-conducting material.

6. The sample injection device for ion chromatography analysis according to claim 2, characterized in that: The water inlet (6) and the water outlet (7) are respectively connected to the constant temperature water machine via connecting pipes.

7. The sample injection device for ion chromatography analysis according to claim 1, characterized in that: A driving device is provided at the bottom of the sample feeding tray (1), and the driving device is used to drive the sample feeding tray (1) to rotate.

8. The sample injection device for ion chromatography analysis according to claim 7, characterized in that: The driving device is a driving motor, and the driving end of the driving motor is fixedly connected to the sample feeding tray (1).

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