Ion chromatograph capable of automatically feeding sample

Abstract

The utility model belongs to the technical field of ion chromatographs, and particularly relates to an ion chromatograph capable of automatically feeding samples, which comprises an ion chromatograph component, and a sample loading component is detachably mounted at the plane end of the ion chromatograph component; the ion chromatograph assembly comprises a machine room and an ion chromatograph main body installed in the machine room, vertical cabins are installed at the rear positions of the top of the machine room, the liquid inlet end of the ion chromatograph main body is located in the vertical cabins, and a liquid pumping pipe is arranged at the liquid inlet end of the ion chromatograph main body. According to the ion chromatograph capable of automatically injecting the sample, a plurality of test tubes can be mounted on the sample loading assembly to realize alternation of the plurality of test tubes, and samples in the test tubes are pumped through the liquid pumping tube and are fed into the ion chromatograph main body for detection, so that automatic sample injection operation is realized, and the working efficiency of the ion chromatograph is favorably improved; when a sample in the test tube is extracted, the liquid extraction tube penetrates into the test tube and continues to extract the sample through the sample pump, so that the liquid extraction tube can effectively and sufficiently extract the sample.

Description

TECHNICAL FIELD

[0001] The utility model relates to ion chromatograph technical field especially relates to ion chromatograph of automatic sample injection. BACKGROUND

[0002] As a kind of efficient analytical instrument, ion chromatograph is widely used in environmental monitoring, food safety, pharmaceutical chemical industry and other fields, for detecting ion component in sample. Its core principle is to separate ion in sample by chromatographic column, and quantitative analysis is carried out by means of detector.

[0003] The sample injection mode of traditional ion chromatograph mainly relies on manual operation or semi-automatic auxiliary device, for example, operator needs to manually inject sample into sample valve, or single sample injection is completed by mechanical injector;

[0004] Manual sample injection needs frequent manual intervention, especially in batch sample detection, operation is time-consuming and has poor repeatability, it is difficult to meet the high-throughput analysis demand, and efficiency is low, meanwhile, manual operation is susceptible to operator proficiency, fatigue and other factors, which can lead to sample injection volume deviation, sample contamination or cross contamination, affect the accuracy of detection result;

[0005] Semi-automatic sample injection device is designed for specific sample container, it is difficult to adapt to diversified sample types (such as liquid, suspension), and mechanical structure is complex, maintenance cost is high. UTILITY MODEL CONTENT

[0006] In order to overcome the defects of prior art pointed out above, the present inventors have made in-depth research, and after a lot of creative labor, the utility model is completed.

[0007] Specifically, the technical problem to be solved by the utility model is to provide ion chromatograph with automatic sample injection, to solve the technical problem that current ion chromatograph still has significant technical defects in sample injection link, which restricts analysis efficiency and instrument intelligent level.

[0008] To solve the above technical problems, the utility model provides the following technical scheme:

[0009] Ion chromatograph with automatic sample injection, comprising ion chromatograph assembly, detachable loading assembly is installed on the plane end of ion chromatograph assembly;

[0010] The ion chromatograph assembly includes machine warehouse and ion chromatograph main body installed inside machine warehouse, vertical warehouse is installed at the rear position of machine warehouse top, and the liquid inlet end of ion chromatograph main body is located inside vertical warehouse, and the liquid inlet end of ion chromatograph main body is provided with liquid suction pipe;

[0011] The sample loading assembly comprises a base plate, a ring seat is rotatably arranged on the top of the base plate, a plurality of storage holes are arranged on the top of the ring seat, a connecting column is fixed on the top of the ring seat between two adjacent storage holes, a ring plate is fixed between the tops of the connecting columns, and a through hole is coaxially arranged on the top of the ring plate and directly above each storage hole.

[0012] As an improved technical solution, the sample pump is arranged on the top of the vertical warehouse, and the liquid outlet end of the sample pump is arranged outside the vertical warehouse.

[0013] As an improved technical solution, the lifting strip is arranged on the end of the liquid suction pipe close to the metal hose, and the movable end of the electric telescopic rod is connected with the top end of the lifting strip.

[0014] As an improved technical solution, the driving motor is arranged at the center of the top of the base plate, and the driving end of the driving motor is fixedly connected with the connecting strip.

[0015] As an improved technical solution, the circular track is arranged on the outer edge of the top of the base plate, the arc-shaped sliding blocks are arranged on the bottom of the ring seat and slide on the circular track, and the arc-shaped sliding blocks are circularly arranged on the bottom of the ring seat.

[0016] As an improved technical solution, the circular disc is arranged on the top of the machine warehouse, the clamping hole is arranged on the top of the circular disc, and the four clamping columns are arranged on the bottom of the base plate and clamped with the clamping hole.

[0017] After the above technical solutions are adopted, the beneficial effects of the present application are as follows:

[0018] 1. The sample loading assembly is clamped on the circular disc under the action of gravity, and is installed through clamping, so that the sample loading assembly is conveniently installed, disassembled and installed, that is, the ion chromatograph assembly and the sample loading assembly are conveniently separated and repaired, and the ion chromatograph assembly and the sample loading assembly are assembled into a single module, so that only the corresponding damaged module needs to be replaced when the single module is damaged, and the maintenance cost is reduced.

[0019] 2. A plurality of test tubes can be installed on the sample loading assembly to realize rotation of the plurality of test tubes, the sample in the test tube is pumped through the liquid suction pipe and sent into the ion chromatograph main body for detection, automatic sampling operation is realized, and the working efficiency of the ion chromatograph is improved.

[0020] 3. The utility model discloses, when the sample in test tube is extracted by the liquid suction pipe, the liquid suction pipe is deepened into the inside of test tube through the telescopic lift strip of electric telescopic rod, and the metal hose is stretched, and the sample pump is opened and the sample in test tube is pumped through the liquid suction pipe, and is transported to the ion chromatograph main body, when the sample in test tube is extracted, the liquid suction pipe is deepened into the inside of test tube and continues to pump through the sample pump, guarantees that the liquid suction pipe can effectively and sufficient sample extraction, to guarantee the effect of subsequent detection, and different types of samples can be effectively extracted. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced the drawing needed to be used in the embodiment description, obviously, the drawing in the following description only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings. Wherein:

[0022] Figure 1 It is the overall structure schematic diagram of the ion chromatograph of the utility model can automatically sample.

[0023] Figure 2 It is the bottom structure schematic diagram of the ion chromatograph main body of the ion chromatograph of the utility model can automatically sample.

[0024] Figure 3 It is the three-dimensional structure schematic diagram of the ion chromatograph main body of the ion chromatograph of the utility model can automatically sample.

[0025] Figure 4 It is the structure schematic diagram of the sample loading assembly of the ion chromatograph of the utility model can automatically sample.

[0026] Explanations of the drawings:

[0027] 1, ion chromatograph assembly;11, machine warehouse;12, round disc;13, vertical warehouse;14, clamping hole;2, sample loading assembly;21, bottom disc;22, circular track;23, clamping column;24, arc slider;25, drive motor;26, ring seat;27, storage hole;28, connecting column;29, connecting strip;210, ring plate;211, perforation;3, sample pump;4, liquid suction pipe;41, electric telescopic rod;42, lift strip;43, metal hose. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0030] Meanwhile, "and / or" or "and / or" appearing in the whole text means that three schemes are included, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B schemes are satisfied at the same time.

[0031] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0032] As Figures 1 to 4 The present embodiment provides an ion chromatograph capable of automatic sample feeding. The ion chromatograph capable of automatic sample feeding comprises an ion chromatograph assembly 1. The ion chromatograph assembly 1 is a mature technology, and thus is not described herein. A sample loading assembly 2 is detachably installed at a planar end of the ion chromatograph assembly 1.

[0033] The ion chromatograph assembly 1 comprises a machine bin 11 and an ion chromatograph main body installed in the machine bin 11. Vertical bins 13 are installed at rear positions of the top of the machine bin 11. An inlet end of the ion chromatograph main body is located in the interior of the vertical bin 13. The inlet end of the ion chromatograph main body is provided with a liquid suction pipe 4.

[0034] The sample loading assembly 2 comprises a base plate 21, a ring seat 26 is rotatably installed on the top of the base plate 21, a circle of storage holes 27 is formed on the top of the ring seat 26, a connecting column 28 is fixed on the top of the ring seat 26 and between two adjacent storage holes 27, a ring plate 210 is fixed between the tops of a plurality of connecting columns 28, and a through hole 211 is coaxially formed on the top of the ring plate 210 and directly above each storage hole 27.

[0035] As shown in Figures 1 to 3 As shown in the drawings, in the embodiment, the sample pump 3 is installed on the top of the vertical warehouse 13, and the liquid outlet end of the sample pump 3 is located outside the vertical warehouse 13. A metal hose 43 is installed between the liquid outlet end of the sample pump 3 and the liquid inlet end of the liquid suction pipe 4.

[0036] As shown in Figures 1 to 3 As shown in the drawings, in the embodiment, the end of the liquid suction pipe 4 close to the metal hose 43 is fixed with a lifting bar 42, and the bottom of the convex end of the vertical warehouse 13 is installed with an electric telescopic rod 41 on both sides. The movable end of the electric telescopic rod 41 is connected with the top end of the lifting bar 42. The liquid suction pipe 4 is deepened into the inside of the test tube through the lifting bar 42 by the extension and retraction of the electric telescopic rod 41, and the metal hose 43 is stretched. When the sample pump 3 is opened, the sample in the test tube is pumped through the liquid suction pipe 4 and transported into the ion chromatograph main body. When the sample in the test tube is pumped, the liquid suction pipe 4 is deepened into the inside of the test tube and continues to be pumped through the sample pump 3, so that the liquid suction pipe 4 can effectively and sufficiently pump the sample, so as to ensure the effect of subsequent detection and adapt to effectively pump different types of samples.

[0037] As shown in Figure 4 As shown in the drawings, in the embodiment, the center of the top of the base plate 21 is fixed with a driving motor 25, the driving end of the driving motor 25 is fixedly connected with a connecting strip 29, and the connecting strip 29 is fixed in the inner hole of the ring plate 210. A plurality of test tubes can be installed on the sample loading assembly 2 to realize the rotation of the plurality of test tubes. The sample in the test tube is pumped through the liquid suction pipe 4 and transported into the ion chromatograph main body for detection, so as to realize the automatic sampling operation and help to improve the working efficiency of the ion chromatograph.

[0038] As shown in Figure 4 As shown in the drawings, in the embodiment, the outer edge of the top of the base plate 21 is fixed with a circular track 22, and the bottom of the ring seat 26 is installed with a plurality of arc-shaped sliding blocks 24 which slide on the circular track 22. The plurality of arc-shaped sliding blocks 24 are circularly distributed on the bottom of the ring seat 26.

[0039] As shown in Figures 1 to 4As shown, in the embodiment, the top of the machine compartment 11 is provided with a circular disc 12, the top of the circular disc 12 is provided with a clamping hole 14, the bottom of the bottom disc 21 is fixed with four clamping columns 23 clamped with the clamping hole 14, the sample loading assembly 2 is installed by clamping, which is convenient for the installation of the sample loading assembly 2, that is, the ion chromatograph assembly 1 and the sample loading assembly 2 are separated and repaired, and the ion chromatograph assembly 1 and the sample loading assembly 2 are assembled into a single module, and only the corresponding damaged module needs to be replaced when the single module is damaged, which helps to reduce the maintenance cost.

[0040] In use, the sample loading assembly 2 is installed on the ion chromatograph assembly 1 as follows: the four clamping columns 23 are clamped in the four clamping holes 14, and the sample loading assembly 2 is clamped on the circular disc 12 under the action of gravity of the sample loading assembly 2.

[0041] The sample to be detected is loaded into the test tube, the test tube is put into the storage hole 27 through the perforation 211, and the test tube is clamped between the ring seat 26 and the ring plate 210, then the driving motor 25 drives the ring plate 210 to rotate, the test tube clamped between the ring seat 26 and the ring plate 210 is rotated, the driving motor 25 stops when the test tube is rotated directly below the suction tube 4, and the suction tube 4 extracts the sample in the test tube for detection, after detection, the driving motor 25 continues to drive the test tube to rotate, the next test tube is rotated directly below the suction tube 4, and the detection is continued.

[0042] And when the suction tube 4 extracts the sample in the test tube, the suction tube 4 is deepened into the inside of the test tube through the lifting bar 42 by the extension and retraction of the electric telescopic rod 41, and the metal hose 43 is stretched, the sample pump 3 is opened to pump the sample in the test tube through the suction tube 4 and transport it into the ion chromatograph main body.

[0043] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the protection scope of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all these equivalent forms also fall within the protection scope defined by the appended claims of the present application.

Claims

1. An ion chromatograph with automatic sample introduction, characterized in that: Including ion chromatograph assembly (1), detachable installation is carried out on the plane end of ion chromatograph assembly (1) sample loading assembly (2); The ion chromatograph assembly (1) includes a machine warehouse (11), and the ion chromatograph body is installed inside the machine warehouse (11), the vertical warehouse (13) is installed at the top of the machine warehouse (11) rear position, and the liquid inlet end of the ion chromatograph body is located inside the vertical warehouse (13), and the liquid inlet end of the ion chromatograph body is provided with a liquid suction pipe (4); The sample loading assembly (2) includes a bottom disc (21), a ring seat (26) is rotatably installed on the top of the bottom disc (21), a circle of storage holes (27) is formed on the top of the ring seat (26), a connecting column (28) is fixed on the top of the ring seat (26) and between adjacent two storage holes (27), a ring plate (210) is fixed between the top of a plurality of connecting columns (28), and a through hole (211) is coaxially formed on the top of the ring plate (210) and directly above each storage hole (27).

2. The auto-sampling capable ion chromatograph of claim 1, wherein: The sample pump (3) is installed inside the vertical warehouse (13), and the liquid outlet end of the sample pump (3) is located outside the vertical warehouse (13), and the metal hose (43) is installed between the liquid outlet end of the sample pump (3) and the liquid inlet end of the liquid suction pipe (4).

3. The auto-sampling capable ion chromatograph of claim 2, wherein: The lifting bar (42) is fixed to one end of the liquid suction pipe (4) close to the metal hose (43), and the electric telescopic rod (41) is installed on both sides of the bottom of the convex end of the vertical warehouse (13), and the movable end of the electric telescopic rod (41) is connected with the top end of the lifting bar (42).

4. The auto-sampling capable ion chromatograph of claim 3, wherein: The driving motor (25) is fixed at the center of the top of the bottom disc (21), the driving end of the driving motor (25) is fixedly connected with the connecting strip (29), and the connecting strip (29) is fixed in the inner hole of the ring plate (210).

5. The auto-sampling capable ion chromatograph of claim 4, wherein: The circular track (22) is fixed to the outer edge of the top of the bottom disc (21), a plurality of arc-shaped sliding blocks (24) are installed on the bottom of the ring seat (26) and slide on the circular track (22), and the plurality of arc-shaped sliding blocks (24) are circularly distributed on the bottom of the ring seat (26).

6. The auto-sampling capable ion chromatograph of claim 5, wherein: The top of the machine warehouse (11) is provided with a circular disc (12), the top of the circular disc (12) is provided with a clamping hole (14), and the bottom of the bottom disc (21) is fixed with four clamping columns (23) clamped with the clamping hole (14).

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