Interference-shielding two-channel ion chromatograph

Abstract

The utility model relates to the technical field of shielding interference dual-channel ion chromatographs, and discloses a shielding interference dual-channel ion chromatograph, which comprises a leacheate generator group, an ultrapure water bottle, a sample injector assembly and a wheel disc, the ultrapure water bottle is in threaded connection with the top of the leacheate generator group, and the sample injector assembly is in threaded connection with the top of the leacheate generator group. The sample injector assembly is installed on the right side of the leacheate generator set, a gear ring is fixedly connected to the interior of the sample injector assembly, rotating mechanisms are connected to the top of a wheel disc at equal intervals in a penetrating mode, the top and the bottom of a sliding ring are connected with springs, and the ends, away from the sliding ring, of the springs are connected with the bottom of the inner bottom of a hollow ring. According to the interference-shielding two-channel ion chromatograph, the situation that detection data is influenced by reduction of sample precipitation is avoided, meanwhile, through cooperation of the convex rod and the inclined ring, the test tube can also vibrate, the precipitation-preventing effect is further improved, and the detection data accuracy of the sample in the test tube is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shielding interference dual-channel ion chromatographs, in particular to a shielding interference dual-channel ion chromatograph. Background Art

[0002] The shielded interference dual-channel ion chromatograph is an instrument used to analyze ionic compounds. Its dual-channel design can reduce interference and improve analysis accuracy. The shielded interference dual-channel ion chromatograph effectively solves the signal interference between anion and cation channels by optimizing the line and circuit design and shielding the interference model, thus achieving simultaneous injection of anions and cations.

[0003] The instrument can be widely used in environmental monitoring, food safety, drug testing and other fields. When the shielded interference dual-channel ion chromatograph is in use, the test tube needs to be placed in the wheel inside the injector. However, when the sample tube is being tested by the equipment, part of the sample may precipitate inside the test tube, which will affect the test data and reduce the overall use effect of the equipment. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a shielded interference dual-channel ion chromatograph to solve the technical problem that when the above-mentioned sample tube is detected by the equipment, part of the sample may precipitate inside the test tube, thereby affecting the detection data and reducing the overall use effect of the equipment.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a shielded interference dual-channel ion chromatograph, comprising: an eluent generator group, an ultrapure water bottle, an injector assembly and a wheel for placing a test tube of liquid to be detected, the ultrapure water bottle is threadedly connected to the top of the eluent generator group, the injector assembly is installed on the right side of the eluent generator group, the wheel is rotatably connected to the inside of the injector assembly, the inside of the injector assembly is fixedly connected to a gear ring, and a rotating mechanism is connected through the top of the wheel at equal intervals.

[0008] The rotating mechanism comprises a rotating ring and a protruding rod, wherein the protruding rod is mounted at the bottom of the wheel disc, the rotating ring is rotatably connected to the inside of the wheel disc, a gear is sleeved on the outside of the rotating ring, the outside of the gear is meshed with the gear ring, a hollow ring is fixedly connected to the inside of the rotating ring, a sliding ring is slidably connected to the inside of the hollow ring, springs are connected between the sliding ring and the hollow ring at equal intervals, a limiting ring is fixedly connected to the inside of the sliding ring, and an oblique ring is fixedly connected to the bottom of the limiting ring;

[0009] The interior of the eluent generator group includes an anion eluent group and a cation eluent group, the exteriors of the anion eluent group and the cation eluent group are respectively connected to pump bodies, and the exteriors of the two pump bodies are connected to an injector assembly through a ten-way valve, and the exterior of the injector assembly is respectively connected to anion channels and cation channels corresponding to the anion eluent group and the cation eluent group, shielding interference membranes are installed in the interiors of the anion channel and the cation channel, and the exterior discharge ends of the anion channel and the cation channel are connected to a chromatographic workstation.

[0010] Preferably, a bearing is sleeved on the outside of the rotating ring, and the bearing is connected through the top of the wheel disc. The bearing can support the rotating ring so that the rotating ring can rotate.

[0011] Preferably, a bracket is fixedly connected to the bottom of the convex rod, and the bracket is connected to the bottom of the wheel disc, and the bracket can support and fix the convex rod.

[0012] Preferably, a rubber ring is fixedly connected to the interior of the limiting ring, and the rubber ring is a conical hollow rubber sleeve. The rubber ring can limit and fix the test tube.

[0013] Preferably, the bottom of the bevel ring is designed to be higher on the left and lower on the right, and the bottom of the bevel ring is slidably connected to the convex rod, so that the bevel ring can be driven by the convex rod to perform an upward movement.

[0014] Preferably, the top and bottom of the sliding ring are connected to the spring, and the end of the spring away from the sliding ring is connected to the bottom of the inner bottom of the hollow ring. The spring can drive the sliding ring and the oblique ring to return to their original position after the movement is completed.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a shielded interference dual-channel ion chromatograph, which has the following beneficial effects:

[0017] In the shielded interference dual-channel ion chromatograph, when the sample inside the test tube is detected through the injector assembly, the added rotating mechanism automatically drives the sample to rotate, thereby preventing the sample from settling and affecting the detection data. At the same time, through the cooperation of the convex rod and the inclined ring, the test tube can also vibrate, further improving the anti-sedimentation effect and greatly improving the detection data accuracy of the sample inside the test tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front schematic diagram of the utility model;

[0019] Figure 2 This is a top cross-sectional view of the ultrapure water bottle of the utility model;

[0020] Figure 3This is a schematic diagram of the top of the roulette wheel of the utility model;

[0021] Figure 4 This is a partial schematic diagram of the front side of the rotating mechanism of the utility model;

[0022] Figure 5 This is a partial front cross-sectional view of the rotating mechanism of the utility model;

[0023] Figure 6 This is a structural connection display diagram of the utility model.

[0024] In the figure: 1. eluent generator group; 2. ultrapure water bottle; 3. injector assembly; 4. wheel; 5. gear ring; 6. rotating mechanism; 61. swivel; 611. bearing; 62. convex rod; 621. bracket; 63. gear; 64. sliding ring; 65. limit ring; 651. rubber ring; 66. spring; 67. oblique ring; 68. hollow ring; 71. anion eluent group; 72. cation eluent group; 8. pump body; 91. anion channel; 92. cation channel; 10. chromatography workstation. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides a technical solution, a shielded interference dual-channel ion chromatograph, comprising: an eluent generator group 1, an ultrapure water bottle 2, an injector assembly 3 and a wheel 4 for placing a test tube of a liquid to be detected. The solution is a structural improvement on the non-electronic component part based on the shielded interference dual-channel ion chromatograph of the prior art, wherein the eluent generator group 1, the ultrapure water bottle 2, the injector assembly 3 and the wheel 4 are common shielded interference dual-channel ion chromatograph products that have been promoted in the prior art.

[0027] See also Figure 1 and Figure 2 The ultrapure water bottle 2 is threadedly connected to the top of the eluent generator group 1, the injector assembly 3 is installed on the right side of the eluent generator group 1, the wheel 4 is rotatably connected to the inside of the injector assembly 3, and the inside of the injector assembly 3 is fixedly connected with a gear ring 5, which can drive the gear 63 to rotate, and the top of the wheel 4 is evenly spaced through with a rotating mechanism 6.

[0028] See also Figure 3 and Figure 4The rotating mechanism 6 includes a rotating ring 61 and a protruding rod 62. The rotating ring 61 rotates in mesh with the gear ring 5 when the wheel disc 4 rotates. The protruding rod 62 can rise against the inclined ring 67. A bearing 611 is sleeved on the outside of the rotating ring 61. The bearing 611 is connected to the top of the wheel disc 4. The bearing 611 can support the rotating ring 61 so that the rotating ring 61 can rotate.

[0029] The bottom of the protruding rod 62 is fixedly connected with a bracket 621, and the bracket 621 is connected to the bottom of the wheel disc 4. The bracket 621 can support and fix the protruding rod 62. The protruding rod 62 is installed at the bottom of the wheel disc 4, and the rotating ring 61 is rotatably connected to the inside of the wheel disc 4.

[0030] The outer part of the rotating ring 61 is sleeved with a gear 63, which meshes and rotates with the gear ring 5, and the outer part of the gear 63 meshes with the gear ring 5. The inner part of the rotating ring 61 is fixedly connected with a hollow ring 68, which can support the limiting ring 65. The inner part of the hollow ring 68 is slidably connected with a sliding ring 64, which can be connected to the limiting ring 65. Springs 66 are evenly connected between the sliding ring 64 and the hollow ring 68, and the springs 66 can drive the sliding ring 64 to return to its original position after the movement is completed.

[0031] The interior of the sliding ring 64 is fixedly connected to a limit ring 65, and the interior of the limit ring 65 is fixedly connected to a rubber ring 651, which is a conical hollow rubber sleeve. The rubber ring 651 can limit and fix the test tube. The bottom of the limit ring 65 is fixedly connected to an oblique ring 67, and the bottom of the oblique ring 67 is designed to be higher on the left and lower on the right, and the bottom of the oblique ring 67 is slidably connected to the protruding rod 62, and the oblique ring 67 can be driven by the protruding rod 62 to move upward.

[0032] The top and bottom of the sliding ring 64 are connected to the spring 66, and the end of the spring 66 away from the sliding ring 64 is connected to the bottom of the inner bottom of the hollow ring 68. The spring 66 can drive the sliding ring 64 and the bevel ring 67 to return to their original position after the movement is completed.

[0033] The principle of this scheme's shielded interference dual-channel ion chromatograph is mainly based on ion exchange chromatography technology, and combines dual-channel design and shielding interference technology. Its working principle is:

[0034] Principle of ion exchange chromatography: Ion chromatograph uses the principle of different forces between ions for separation. After sample pretreatment, the sample enters the ion exchange column of the ion chromatograph. The ions in the ion exchange column interact with the carrier liquid phase, and the ions in the sample are separated through ion exchange and adsorption. This separation is based on the charge interaction between ions and the stationary phase and the difference in affinity of ion exchange functional groups.

[0035] Dual-channel design: The dual-channel design allows cations and anions to be detected through different channels. This helps to analyze multiple ions at the same time, improves analysis efficiency, and reduces interference between ions.

[0036] Shielding interference technology: In order to further improve the accuracy and reliability of analysis, the shielding interference dual-channel ion chromatograph adopts shielding interference technology. This technology can effectively reduce the impact of external electromagnetic interference, chemical interference and physical interference on the analysis results, thereby ensuring the accuracy and reliability of the data.

[0037] See also Figure 6 , an anion eluent group 71 and a cation eluent group 72 are provided in the eluent generator group 1, and both are connected to the pump body 8 on the outside, and the two pump bodies 8 are connected to the injector assembly 3 through a ten-way valve. The injector assembly 3 is provided with an anion channel 91 and a cation channel 92 on the outside for the anion eluent group 71 and the cation eluent group 72, respectively, and shielding interference membrane bodies are provided inside the two channels. The discharge ends of the two channels are connected to the chromatographic workstation 10. The anion channel 91 includes an anion protection column, an analytical column, a suppressor and a conductivity cell, while the cation channel 92 includes a cation protection column, an analytical column and a conductivity cell. These shielding interference membrane bodies can be ion exchange membranes, cationic membranes or ion selective permeation membranes to ensure the stability of anion or cation concentrations, while effectively shielding other ion interferences, thereby realizing the "dual-channel shielding interference" function.

[0038] The ion chromatograph adopts a dual pump, single valve, dual column, and dual detector design, wherein anions are detected by suppressed conductivity and cations by direct conductivity. The automatic sampler assembly 3 controls the switching of the ten-way valve to achieve separate injection and detection of anions and cations, and the chromatographic workstation 10 completes data acquisition. This solution uses dual-channel synchronous detection of anions and cations, combined with a shielding interference membrane, to achieve dual-channel shielding interference type ion chromatography detection.

[0039] In this solution, the filtrate is poured into the ultrapure water bottle 2, the sample is injected into the test tube, and then the injector assembly 3 is closed, the eluent generator group 1 and the injector assembly 3 are started, and the wheel 4 rotates inside the injector assembly 3, and the sample is detected through the injector assembly 3. At the same time, when the wheel 4 rotates, it can drive the gear 63 to move together, and then mesh with the gear ring 5 to rotate, thereby driving the rotating ring 61 and the hollow ring 68 and the limit ring 65 to rotate, and finally driving the test tube to rotate to avoid the sample precipitation inside the test tube. At the same time, when the limit ring 65 rotates, it drives the inclined ring 67 to rotate, and finally conflicts with the convex rod 62, and drives the limit ring 65 to rise, and then descends through the spring 66, thereby generating vibration;

[0040] When the sample inside the test tube is tested through the sample injector assembly 3, the added rotating mechanism 6 automatically drives the sample to rotate, so as to prevent the sample from settling and affecting the test data. At the same time, through the cooperation of the convex rod 62 and the inclined ring 67, the test tube can also vibrate, further improving the anti-sedimentation effect and greatly improving the accuracy of the test data of the sample inside the test tube.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shielded interference dual-channel ion chromatograph, comprising: An eluent generator group (1), an ultrapure water bottle (2), an injector assembly (3) and a wheel (4) for placing a test tube of a liquid to be tested, wherein the ultrapure water bottle (2) is threadedly connected to the top of the eluent generator group (1), the injector assembly (3) is installed on the right side of the eluent generator group (1), and the wheel (4) is rotatably connected to the inside of the injector assembly (3), characterized in that a gear ring (5) is fixedly connected to the inside of the injector assembly (3), and a rotating mechanism (6) is evenly spaced through the top of the wheel (4); The rotating mechanism (6) comprises a rotating ring (61) and a protruding rod (62), wherein the protruding rod (62) is mounted at the bottom of the wheel disc (4), the rotating ring (61) is rotatably connected to the inside of the wheel disc (4), the outside of the rotating ring (61) is sleeved with a gear (63), the outside of the gear (63) is meshed with the gear ring (5), the inside of the rotating ring (61) is fixedly connected to a hollow ring (68), the inside of the hollow ring (68) is slidably connected to a sliding ring (64), springs (66) are connected between the sliding ring (64) and the hollow ring (68) at equal intervals, the inside of the sliding ring (64) is fixedly connected to a limiting ring (65), and the bottom of the limiting ring (65) is fixedly connected to an inclined ring (67); The eluent generator group (1) comprises an anion eluent group (71) and a cation eluent group (72) inside, the anion eluent group (71) and the cation eluent group (72) are respectively connected to pump bodies (8) outside, and the two pump bodies (8) are connected to the sample injector assembly (3) outside through a ten-way valve, and the sample injector assembly (3) is respectively connected to anion channels (91) and cation channels (92) outside corresponding to the anion eluent group (71) and the cation eluent group (72), the anion channels (91) and the cation channels (92) are both provided with shielding interference membranes inside, and the discharge ends outside the anion channels (91) and the cation channels (92) are connected to a chromatographic workstation (10).

2. The shielded interference dual-channel ion chromatograph according to claim 1, characterized in that: The outer portion of the rotating ring (61) is sleeved with a bearing (611), and the bearing (611) is connected through the top of the wheel disc (4).

3. The shielded interference dual-channel ion chromatograph according to claim 1, characterized in that: The bottom of the protruding rod (62) is fixedly connected to a bracket (621), and the bracket (621) is connected to the bottom of the wheel disc (4).

4. The shielded interference dual-channel ion chromatograph according to claim 1, characterized in that: A rubber ring (651) is fixedly connected inside the limiting ring (65), and the rubber ring (651) is a conical hollow rubber sleeve.

5. The shielded interference dual-channel ion chromatograph according to claim 1, characterized in that: The bottom of the oblique ring (67) is designed to be higher on the left and lower on the right, and the bottom of the oblique ring (67) is slidably connected to the protruding rod (62).

6. The shielded interference dual-channel ion chromatograph according to claim 1, characterized in that: The top and bottom of the sliding ring (64) are both connected to the spring (66), and one end of the spring (66) away from the sliding ring (64) is connected to the bottom of the inner bottom of the hollow ring (68).

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