Device for measuring sample injection volume of ion chromatograph

Abstract

The utility model relates to the technical field of sample injection volume measurement of an ion chromatograph, in particular to a sample injection volume measurement device of the ion chromatograph, which comprises a sample injection volume controller, two water passing ports are fixedly arranged on the side surface of the sample injection volume controller, one side of each water passing port is fixedly provided with a water passing pipe, one side of each water passing pipe is provided with a fixed pipe, and the other side of each water passing pipe is provided with a fixed pipe. Sealing pipes are arranged in the two fixing pipes, first sealing rings are arranged on the side faces of the two sealing pipes, second sealing rings are arranged on one sides of the two fixing pipes, two mounting bases are fixedly arranged on the side faces of the two fixing pipes, positioning plates are fixedly arranged on one sides of the four mounting bases, and two connecting boxes are fixedly arranged on the side faces of the two water passing pipes; the utility model has the beneficial effects that the liquid inlet pipe and the liquid outlet pipe are convenient to disassemble and assemble, so that the liquid inlet pipe and the liquid outlet pipe are convenient to replace and clean, the influence on the sample injection flow due to blockage of the liquid inlet pipe and the liquid outlet pipe is avoided, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of determining the injection volume of an ion chromatograph, in particular to a device for determining the injection volume of an ion chromatograph. Background Art

[0002] An ion chromatograph is indeed an analytical instrument mainly used for detecting liquids, which can analyze the pollutant content in liquids. When using an ion chromatograph, it is necessary to control the liquid inlet volume through an injection volume controller to ensure that the volume height of each injection is consistent, so as to improve the accuracy of experimental results.

[0003] The existing injection volume controller mainly includes a controller body, a liquid inlet pipe and a liquid outlet pipe. Both the liquid inlet pipe and the liquid outlet pipe are threadedly connected to the controller body. The liquid is transported into the controller body through the liquid inlet pipe, and the liquid is discharged from the controller body through the liquid outlet pipe. The controller body is used to measure and accurately control the injection volume to ensure the accuracy of experimental results.

[0004] However, it is found in the implementation of related technologies that the existing injection volume controller has the following problems: after the liquid inlet pipe and the liquid outlet pipe are used for a period of time, dirt will adhere to the inside, which easily affects the flow rate of the liquid inlet pipe and the liquid outlet pipe, thereby affecting the accuracy of the injection flow rate. The liquid inlet pipe, the liquid outlet pipe and the controller body are all threadedly connected, making it laborious to disassemble the liquid inlet pipe and the liquid outlet pipe, thus reducing the convenience of replacing and cleaning the liquid inlet pipe and the liquid outlet pipe, and easily reducing the accuracy of the detection results. In view of this, a device for determining the injection volume of an ion chromatograph is provided to overcome the above defects. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art and propose a device for determining the injection volume of an ion chromatograph.

[0006] To achieve the above object, the utility model adopts the following technical solutions: An injection volume measuring device for an ion chromatograph, including an injection volume controller, on the side of which two water inlets are fixedly provided. On one side of each of the two water inlets, a water pipe is fixedly provided. On one side of each of the two water pipes, a fixed pipe is provided. Inside each of the two fixed pipes, a sealed pipe is provided. On the side of each of the two sealed pipes, a first sealing ring is provided. On one side of each of the two fixed pipes, a second sealing ring is provided. On the side of each of the two fixed pipes, two mounting seats are fixedly provided. On one side of each of the four mounting seats, a positioning plate is fixedly provided. On the side of each of the two water pipes, two connecting boxes are fixedly provided. Inside each of the four connecting boxes, a movable groove is formed. Inside each of the four movable grooves, a positioning shaft is provided. On the side of each of the four positioning shafts, a pressing plate is provided. On one side of each of the four positioning shafts, a compression spring is fixedly provided. One side of each of the four compression springs is fixedly connected to the inside of each of the four connecting boxes. Inside one of the fixed pipes, a liquid inlet pipe is fixedly provided, and inside the other fixed pipe, a liquid outlet pipe is fixedly provided.

[0007] As a further description of the above technical solution: Inside each of the two fixed pipes, a fixed groove is formed, and the inside of each of the two fixed grooves is fixedly connected to the side of each of the two sealed pipes. The fixed pipe facilitates the fixation of the liquid inlet pipe or the liquid outlet pipe.

[0008] As a further description of the above technical solution: The side of each of the two sealed pipes is fixedly connected to the inside of each of the two first sealing rings, and the side of each of the two first sealing rings is respectively in contact with the inside of each of the two water pipes. The first sealing ring facilitates improving the sealing performance at the connection between the sealed pipe and the water pipe.

[0009] As a further description of the above technical solution: One side of each of the two second sealing rings is fixedly connected to one side of each of the two fixed pipes, and the other side of each of the two second sealing rings is respectively in contact with one side of each of the two water pipes. The second sealing ring facilitates improving the sealing performance at the connection between the fixed pipe and the water pipe.

[0010] As a further description of the above technical solution: Inside each of the four positioning plates, a positioning hole is formed, and the inside of each of the four positioning holes is respectively in contact with the side of each of the four positioning shafts. The positioning shaft facilitates limiting the positioning plate.

[0011] As a further description of the above technical solution: On the side of each of the four positioning shafts, a slider is fixedly provided, and one side of each of the four sliders is fixedly connected to one side of each of the four pressing plates. The slider facilitates improving the stability when the pressing plate moves.

[0012] As a further description of the above technical solution: On the side of each of the four connecting boxes, a sliding groove is formed, and the inside of each of the four sliding grooves is respectively in contact with the side of each of the four sliders. The connecting box facilitates improving the stability when the positioning shaft moves.

[0013] As a further description of the above technical solution: placing grooves are respectively formed on one side of the four connection boxes, and the inner parts of the four placing grooves are respectively in fit with the side surfaces of the four positioning plates, and the positioning plates facilitate the limiting of the fixing pipe.

[0014] The utility model has the following beneficial effects:

[0015] The ion chromatograph injection volume measuring device designed by the utility model, through design cooperation, when it is necessary to disassemble, replace or clean the liquid inlet pipe and the liquid outlet pipe, press two pressing plates on the same water pipe, so that the positioning shaft disengages from the positioning plate, move the fixing pipe, so that the positioning plate disengages from the connection box, and then remove the fixing pipe, and then remove the liquid inlet pipe or the liquid outlet pipe. After the liquid inlet pipe or the liquid outlet pipe is replaced or cleaned, move the fixing pipe in the reverse direction, so that the sealing pipe enters the inside of the water pipe. The sealing performance of the connection between the sealing pipe and the water pipe is improved through the first sealing ring, and the sealing performance between the fixing pipe and the water pipe is improved through the second sealing ring, preventing water leakage at the connection between the fixing pipe and the water pipe and affecting the injection accuracy. When the fixing pipe approaches the water pipe, the positioning plate will enter the inside of the connection box. At this time, release the pressing plate, and the positioning shaft is extruded through the extrusion spring, so that the positioning shaft enters the inside of the positioning plate, making the positioning plate unable to disengage from the connection box, so that the fixing pipe is fixed together with the water pipe, so that the liquid inlet pipe or the liquid outlet pipe is fixed together with the injection volume controller, so that the liquid inlet pipe and the liquid outlet pipe are convenient to disassemble and assemble, the liquid inlet pipe and the liquid outlet pipe are convenient to replace and clean, avoiding blockage of the liquid inlet pipe and the liquid outlet pipe and affecting the injection flow rate, thereby improving the accuracy of the detection result. Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the utility model;

[0017] Figure 2 is the exploded structural schematic diagram of the fixing pipe of the utility model;

[0018] Figure 3 is the sectional structural schematic diagram of the fixing pipe of the utility model;

[0019] Figure 4 is the internal structural schematic diagram of the connection box of the utility model.

[0020] Legend Explanation:

[0021] 1. Injection volume controller; 2. Water inlet; 3. Water pipe; 4. Fixing pipe; 5. Sealing pipe; 6. First sealing ring; 7. Second sealing ring; 8. Mounting seat; 9. Positioning plate; 10. Connection box; 11. Positioning shaft; 12. Pressing plate; 13. Extrusion spring; 14. Liquid inlet pipe; 15. Liquid outlet pipe; 16. Slide block. Specific Embodiments

[0022] Reference Figures 1-4 Referring to Figures 1-4 , the injection volume measuring device for an ion chromatograph provided by the present utility model includes an injection volume controller 1. Two water inlets 2 are fixedly provided on the side of the injection volume controller 1. Water pipes 3 are fixedly provided on one side of each of the two water inlets 2. Fixed pipes 4 are provided on one side of each of the two water pipes 3. Sealing pipes 5 are provided inside each of the two fixed pipes 4. The sealing pipes 5 facilitate the fixation of the first sealing rings 6. First sealing rings 6 are provided on the side of each of the two sealing pipes 5. Second sealing rings 7 are provided on one side of each of the two fixed pipes 4. Two mounting seats 8 are fixedly provided on the side of each of the two fixed pipes 4. The mounting seats 8 facilitate the fixation of the positioning plates 9. Positioning plates 9 are fixedly provided on one side of each of the four mounting seats 8. Two connection boxes 10 are fixedly provided on the side of each of the two water pipes 3. Moving grooves are formed inside each of the four connection boxes 10. Positioning shafts 11 are provided inside each of the four moving grooves. Pressing plates 12 are provided on the side of each of the four positioning shafts 11. The pressing plates 12 facilitate the movement of the positioning shafts 11. One side of each of the four positioning shafts 11 is fixedly provided with a compression spring 13. The compression springs 13 facilitate the movement of the pressing plates 12. One side of each of the four compression springs 13 is fixedly connected to the inside of each of the four connection boxes 10. A liquid inlet pipe 14 is fixedly provided inside one of the fixed pipes 4, and a liquid outlet pipe 15 is fixedly provided inside the other fixed pipe 4.

[0023] As a further implementation of the above technical solution: Fixed grooves are formed inside each of the two fixed pipes 4, and the inside of the two fixed grooves are respectively fixedly connected to the side of the two sealing pipes 5. The fixed pipes 4 facilitate the fixation of the liquid inlet pipe 14 or the liquid outlet pipe 15.

[0024] As a further implementation of the above technical solution: The side of each of the two sealing pipes 5 is fixedly connected to the inner side of each of the two first sealing rings 6. The side of each of the two first sealing rings 6 is respectively in contact with the inner side of each of the two water pipes 3. The first sealing rings 6 facilitate improving the sealing performance at the connection between the sealing pipes 5 and the water pipes 3.

[0025] As a further implementation of the above technical solution: One side of each of the two second sealing rings 7 is respectively fixedly connected to one side of each of the two fixed pipes 4. The other side of each of the two second sealing rings 7 is respectively in contact with one side of each of the two water pipes 3. The second sealing rings 7 facilitate improving the sealing performance at the connection between the fixed pipes 4 and the water pipes 3.

[0026] As a further implementation of the above technical solution: Positioning holes are formed inside each of the four positioning plates 9, and the inside of the four positioning holes are respectively in contact with the side of each of the four positioning shafts 11. The positioning shafts 11 facilitate the limitation of the positioning plates 9.

[0027] As a further implementation of the above technical solution: Sliders 16 are fixedly arranged on the sides of the four positioning shafts 11, and one sides of the four sliders 16 are fixedly connected to one sides of the four pressing plates 12 respectively. The sliders 16 facilitate improving the stability when the pressing plates 12 move.

[0028] As a further implementation of the above technical solution: Chutes are provided on the sides of the four connection boxes 10, and the inner parts of the four chutes are respectively in fit with the sides of the four sliders 16. The connection boxes 10 facilitate improving the stability when the positioning shafts 11 move.

[0029] As a further implementation of the above technical solution: Placement grooves are provided on one sides of the four connection boxes 10, and the inner parts of the four placement grooves are respectively in fit with the sides of the four positioning plates 9. The positioning plates 9 facilitate limiting the fixed pipe 4.

[0030] Working principle:

[0031] When the present utility model is used, liquid enters the sampling volume controller 1 through the liquid inlet pipe 14. The sampling volume controller 1 is used to measure and accurately control the sampling volume, and quantitatively discharges the liquid through the liquid outlet pipe 15. When it is necessary to disassemble, replace or clean the liquid inlet pipe 14 and the liquid outlet pipe 15, press the two pressing plates 12 on the same water pipe 3, thereby driving the two pressing plates 12 to approach each other, thereby driving the two positioning shafts 11 to approach each other, so that the positioning shafts 11 are disengaged from the positioning plate 9. At this time, the positioning plate 9 can slide in the placement groove, move the fixed pipe 4, thereby driving the mounting seat 8 and the positioning plate 9 to move, so that the positioning plate 9 is disengaged from the connection box 10, thereby removing the fixed pipe 4, and thus removing the liquid inlet pipe 14 or the liquid outlet pipe 15. When the replacement or cleaning of the liquid inlet pipe 14 or the liquid outlet pipe 15 is completed, move the fixed pipe 4 in the reverse direction, so that the sealing pipe 5 enters the inside of the water pipe 3. The first sealing ring 6 is used to improve the sealing performance at the connection between the sealing pipe 5 and the water pipe 3, and the second sealing ring 7 is used to improve the sealing performance between the fixed pipe 4 and the water pipe 3, preventing water leakage at the connection between the fixed pipe 4 and the water pipe 3 and affecting the sampling accuracy. When the fixed pipe 4 approaches the water pipe 3, the positioning plate 9 will enter the inside of the connection box 10. At this time, release the pressing plate 12, and the positioning shafts 11 are squeezed by the compression spring 13, thereby driving the two positioning shafts 11 to move away from each other, so that the positioning shafts 11 enter the inside of the positioning plate 9, making the positioning plate 9 unable to disengage from the connection box 10, so that the fixed pipe 4 and the water pipe 3 are fixed together, so that the liquid inlet pipe 14 or the liquid outlet pipe 15 is fixed to the sampling volume controller 1. Pressing the pressing plate 12 can disengage the liquid inlet pipe 14 or the liquid outlet pipe 15 from the sampling volume controller 1, and releasing the pressing plate 12 can fix the liquid inlet pipe 14 or the liquid outlet pipe 15 to the sampling volume controller 1, so that the liquid inlet pipe 14 and the liquid outlet pipe 15 have a high disassembly efficiency, so that the liquid inlet pipe 14 and the liquid outlet pipe 15 are easy to disassemble and assemble, making the liquid inlet pipe 14 and the liquid outlet pipe 15 easy to replace and clean, avoiding blockage of the liquid inlet pipe 14 and the liquid outlet pipe 15 and affecting the sampling flow rate, thereby improving the accuracy of the detection results.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Ion chromatograph injection volume measuring device, comprising an injection volume controller (1), characterized in that: On the side of the sample injection volume controller (1), two water inlets (2) are fixedly arranged. On one side of each of the two water inlets (2), a water pipe (3) is fixedly arranged. On one side of each of the two water pipes (3), a fixed pipe (4) is arranged. Inside each of the two fixed pipes (4), a sealing pipe (5) is arranged. On the side of each of the two sealing pipes (5), a first sealing ring (6) is arranged. On one side of each of the two fixed pipes (4), a second sealing ring (7) is arranged. On the side of each of the two fixed pipes (4), two mounting seats (8) are fixedly arranged. On one side of each of the four mounting seats (8), a positioning plate (9) is fixedly arranged. On the side of each of the two water pipes (3), two connection boxes (10) are fixedly arranged. Inside each of the four connection boxes (10), a movable groove is formed. Inside each of the four movable grooves, a positioning shaft (11) is arranged. On the side of each of the four positioning shafts (11), a pressing plate (12) is arranged. On one side of each of the four positioning shafts (11), a compression spring (13) is fixedly arranged. One side of each of the four compression springs (13) is fixedly connected to the inside of each of the four connection boxes (10). Inside one of the fixed pipes (4), a liquid inlet pipe (14) is fixedly arranged. Inside the other fixed pipe (4), a liquid outlet pipe (15) is fixedly arranged.

2. The ion chromatograph injection volume measuring device according to claim 1, characterized in that: Inside each of the two fixed pipes (4), a fixed groove is formed. The inner parts of the two fixed grooves are respectively fixedly connected to the sides of the two sealing pipes (5).

3. The ion chromatograph injection volume measuring device according to claim 1, characterized in that: The sides of the two sealing pipes (5) are respectively fixedly connected to the inner sides of the two first sealing rings (6). The sides of the two first sealing rings (6) are respectively in contact with the inner sides of the two water pipes (3).

4. The ion chromatograph injection volume measuring device according to claim 1, characterized in that: One side of each of the two second sealing rings (7) is respectively fixedly connected to one side of each of the two fixed pipes (4). The other side of each of the two second sealing rings (7) is respectively in contact with one side of each of the two water pipes (3).

5. The injection volume measuring device for an ion chromatograph according to claim 1, characterized in that: Inside each of the four positioning plates (9), a positioning hole is formed. The inner parts of the four positioning holes are respectively in contact with the sides of the four positioning shafts (11).

6. The ion chromatograph injection volume measuring device according to claim 1, characterized in that: On the side of each of the four positioning shafts (11), a slider (16) is fixedly arranged. One side of each of the four sliders (16) is respectively fixedly connected to one side of each of the four pressing plates (12).

7. The ion chromatograph injection volume measuring device according to claim 6, wherein: On the side of each of the four connection boxes (10), a sliding groove is formed. The inner parts of the four sliding grooves are respectively in contact with the sides of the four sliders (16).

8. The ion chromatograph injection volume measuring device according to claim 1, wherein: On one side of each of the four connection boxes (10), a placement groove is formed. The inner parts of the four placement grooves are respectively in contact with the sides of the four positioning plates (9).

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