Automatic cleaning device for flow path system of ion chromatograph

Abstract

The invention relates to the technical field of ion chromatographs, in particular to an automatic cleaning device for a flow path system of an ion chromatograph. According to the technical scheme, the ion chromatograph comprises an ion chromatograph box and a fixing disc, a pipeline is installed on one side of the ion chromatograph box, a hose is connected to the bottom end of the pipeline in a sleeved mode, a second connecting plate is fixed to one side of the ion chromatograph box, a long plate is fixed to the lower surface of the second connecting plate, a movable plate is movably connected to the front end of the long plate, and the movable plate is fixed to the hose. A first connecting plate is fixed to one side of the lower surface of the ion chromatograph box body, a liquid storage tank is installed on the lower surface of the first connecting plate, and a collecting tank is installed on the other side of the lower surface of the ion chromatograph box body. The cleaning device has the advantages that cleaning liquid in the liquid storage tank can be conveniently sucked, a flow path system of the ion chromatograph can be conveniently cleaned, meanwhile, different cleaning liquid can be selected according to needs to clean the flow path system of the ion chromatograph, time and labor are saved, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ion chromatographs, in particular to an automatic cleaning device for a flow path system of an ion chromatograph. Background Art

[0002] Ion chromatograph is a high-efficiency analytical instrument used to separate and detect ionic compounds in solution. It combines liquid chromatography technology with electrochemical or optical detection methods and can perform qualitative and quantitative analysis of inorganic anions, cations, organic acids, amines and other substances.

[0003] After completing sample analysis, cleaning the flow path of an ion chromatograph is a critical step to ensure instrument stability and detection accuracy. Due to differences in the chemical composition and residues of different samples, the required cleaning solution also varies. For example, high-salt samples may require a low-polarity solvent, while organic contaminants require a specific ratio of acid or base solution.

[0004] Traditional cleaning methods rely on manual labor. Technicians must manually select the appropriate cleaning solution based on the characteristics of the previously tested sample, pour it into an open container, and then immerse the instrument's sample inlet tube in the solution for suction cleaning. This process not only increases operator labor intensity but also easily leads to improper cleaning solution selection due to human error, which in turn affects the accuracy of subsequent analysis.

[0005] Frequent changes of cleaning fluid require repeated pipework and pouring, which is not only time-consuming and labor-intensive, but can also cause spillage and cross-contamination due to careless operation. Furthermore, cleaning fluid in open containers exposed to the environment for extended periods can absorb moisture or dust, causing concentration changes or introducing impurities, further impacting cleaning effectiveness.

[0006] In laboratories that continuously test multiple samples, this inefficient manual cleaning method has become a bottleneck restricting testing throughput. Especially under high-load conditions, the lag in manual operation significantly prolongs instrument downtime and reduces overall efficiency. Furthermore, the frequent replacement of cleaning solutions with different properties complicates waste disposal, requiring operators to separate and collect different types of waste cleaning solutions to avoid potential safety hazards caused by the mixing of incompatible chemicals. Summary of the Invention

[0007] The object of the present invention is to provide an automatic cleaning device for the flow path system of an ion chromatograph, which has the advantages of being convenient for absorbing the cleaning liquid in the liquid storage tank, convenient for cleaning the flow path system of the ion chromatograph, and can select different cleaning liquids to clean the flow path system of the ion chromatograph as needed, saving time and labor, and improving work efficiency. It solves the problem that the ion chromatograph needs to clean the flow path system of the ion chromatograph after detecting and analyzing the liquid, but usually the cleaning liquid is placed in a holding bucket, and then the suction tube is placed in the holding bucket to absorb the cleaning liquid. However, the ion chromatograph detects and analyzes different liquids, and the required cleaning liquids are different. Different cleaning liquids need to be selected in time, which is time-consuming and labor-intensive, and has low work efficiency.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automatic cleaning device for the flow path system of an ion chromatograph, comprising an ion chromatograph housing and a fixed plate, a pipe being installed on one side of the ion chromatograph housing, a hose being connected to the bottom end of the pipe, a connecting plate 2 being fixed on one side of the ion chromatograph housing, a long plate being fixed on the lower surface of the connecting plate 2, a movable plate being movably connected to the front end of the long plate, the movable plate being fixed to the hose, a connecting plate 1 being fixed on one side of the lower surface of the ion chromatograph housing, a liquid storage tank being installed on a lower surface of the connecting plate, and a collection tank being installed on the other side of the lower surface of the ion chromatograph housing.

[0009] Preferably, a mounting hole 1 is provided on the upper surface of the connecting plate 2, a turntable 1 is rotatably connected in the mounting hole 1, a through hole 3 is provided on one side of the upper surface of the turntable 1, the bottom end of the hose passes through the through hole 3, a round rod 1 is fixed on the lower surface of the turntable, and a gear 1 is fixed to the bottom end of the round rod 1.

[0010] Preferably, a long groove is provided at the front end of the long plate, a connecting block is inserted into the long groove, a threaded hole is provided on the upper surface of the connecting block, a round hole is provided at the bottom end of the long plate, a motor is fixed to the bottom end of the long plate, the top end of the transmission shaft of the motor extends into the round hole, a screw is fixed to the top end of the transmission shaft of the motor, the top end of the screw passes through the threaded hole and is threadedly connected, a movable plate is fixed to the front end of the connecting block, a mounting hole two is provided on the upper surface of the movable plate, the bottom end of the hose passes through the mounting hole two and is fixed.

[0011] Preferably, a mounting hole three is opened on the upper surface of the connecting plate one, the inner wall of the mounting hole three is rotatably connected to the turntable two, a through hole four is opened on one side of the upper surface of the turntable two, a round rod two is fixed on the upper surface of the turntable two, and a gear two is fixed on the top of the round rod two.

[0012] Preferably, a connecting plate three is fixed to one side of the ion chromatograph box, a circular hole two is opened on the upper surface of the connecting plate three, a motor two is fixed to the upper surface of the connecting plate three, the bottom end of the transmission shaft provided by the motor two extends into the circular hole two, a rotating rod three is fixed to the bottom end of the transmission shaft provided by the motor two, a gear three is fixed to the bottom end of the rotating rod three, and the gear three is respectively meshed and connected with gear one and gear two.

[0013] Preferably, a circular ring 2 is fixed on the lower surface of the connecting plate, an annular screw groove 2 is provided on the lower surface of the circular ring 2, a threaded ring 2 is fixed on the upper surface of the fixed plate, a fixing hole is provided on the lower surface of the fixed plate, the upper surface of the liquid storage tank passes through the fixing hole and is fixed, three through holes 5 are provided on the upper surface of the liquid storage tank, and liquid storage tanks are respectively provided at the bottom ends of the inner walls of the three through holes 5, the threaded ring 2 extends into the annular screw groove 2 and is threadedly connected, and a handle 1 is fixed on both sides of the outer wall of the liquid storage tank.

[0014] Preferably, a detection ring is installed at the bottom end of the hose, and marking rings are respectively installed on the inner walls of the three through holes.

[0015] Preferably, a circular ring is fixed on the other side of the lower surface of the ion chromatograph box, a ring hole is provided on the lower surface of the circular ring, an annular screw groove is provided on the lower surface of the circular ring, a collecting groove is provided on the upper surface of the collecting tank, a threaded ring is fixed on the upper surface of the collecting tank, the threaded ring extends into the annular screw groove and is threadedly connected, and handles are fixed on both sides of the outer wall of the collecting tank.

[0016] Preferably, the front end of the ion chromatograph housing is provided with a groove 1, the rear end of the inner wall of the groove 1 is provided with a groove 2, the housing cover is inserted into the groove 1, one side of the ion chromatograph housing is provided with a through hole 1, the lower surface of the ion chromatograph housing is provided with a through hole 2, a mounting plate is installed in the groove 2, a rinsing component is installed at the front end of the mounting plate, an infusion tube 6 is installed at the lower end of the rinsing component, a pump body is installed on one side of the pump body, a pipeline is installed on one side of the pipeline, and an infusion tube 1 is installed at the upper end of the rinsing component The upper end of the infusion tube one is installed with an injection component, the lower end of the injection component is installed with an infusion tube five, the upper end of the infusion tube five is installed with a separation component, the lower end of the separation component is installed with an infusion tube four, the upper end of the infusion tube four is installed with a data processing component, one side of the data processing component is installed with an infusion tube two, one side of the infusion tube two is installed with a detection component, the upper end of the data processing component is installed with an infusion tube three, the upper end of the infusion tube three is connected to the detection component, and the lower end of the other side of the data processing component is installed with a waste liquid pipe, and the bottom end of the waste liquid pipe passes through the through hole two.

[0017] Preferably, four pillars arranged in a rectangular shape are fixed to the lower surface of the ion chromatograph housing.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention is provided with a pipe installed on one side of the ion chromatograph housing, a hose is sleeved on the bottom end of the pipe, a connecting plate 2 is fixed on one side of the ion chromatograph housing, a long plate is fixed on the lower surface of the connecting plate 2, the front end of the long plate is movably connected to the movable plate, and the movable plate is fixed to the hose. When it is necessary to clean the flow path system of the ion chromatograph after use, the motor 1 is started to rotate the screw, and the connecting block, the movable plate and the hose can be moved up and down as needed, so that the hose passes through the through hole 4 and the through hole 5 and extends into the liquid storage tank, thereby achieving the effect of facilitating the absorption of the cleaning liquid in the liquid storage tank and facilitating the cleaning of the flow path system of the ion chromatograph.

[0020] 2. The present invention fixes a connecting plate 1 on one side of the lower surface of the ion chromatograph casing, and a liquid storage tank is installed on the lower surface of the connecting plate, and a collecting tank is installed on the other side of the lower surface of the ion chromatograph casing. When the ion chromatograph flow system needs to be cleaned, different cleaning liquids are put into the three liquid storage tanks, and the motor 2 is started so that the gear 3 can drive the gear 1 and the gear 2, so that the hose can rotate, and the detection ring can identify the marking ring. After identification, the hose enters the liquid storage tank to extract the cleaning liquid in the liquid storage tank to clean the ion chromatograph flow system, thereby achieving the effect of selecting different cleaning liquids to clean the ion chromatograph flow system as needed, saving time and labor, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 Schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a side structural schematic diagram of the present invention;

[0024] Figure 4 It is a schematic diagram of the top view of the structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the main structure of the collection tank of the present invention;

[0026] Figure 6 This is a schematic diagram of the main structure of the mounting plate of the present invention;

[0027] Figure 7 This is a schematic cross-sectional structural diagram of a collection tank according to the present invention;

[0028] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure at point A;

[0029] Figure 9 This is a schematic diagram of the second main structure of the connecting plate of the present invention;

[0030] Figure 10 Schematic diagram of the structure of the connecting plate of the present invention from two side views;

[0031] Figure 11 This is a schematic diagram of the cross-sectional structure of the connecting plate of the present invention;

[0032] Figure 12 This is a schematic diagram of the cross-sectional structure of the long plate of the present invention;

[0033] Figure 13 This is a schematic cross-sectional structural diagram of the liquid storage tank of the present invention;

[0034] Figure 14 For the present invention Figure 13 A schematic diagram of the enlarged structure at point B;

[0035] Figure 15 This is a schematic diagram of the structure of the liquid storage tank of the present invention from a top view;

[0036] Figure 16 For the present invention Figure 15 Schematic diagram of the enlarged structure at C;

[0037] Figure 17 Schematic diagram of three cross-sectional views of the connecting plate of the present invention.

[0038] In the figure: 1. Pillar; 2. Liquid storage tank; 3. Ion chromatograph housing; 4. Housing cover; 5. Collecting tank; 6. Groove 1; 7. Groove 2; 8. Through hole 1; 9. Through hole 2; 10. Handle 1; 11. Connecting plate 1; 12. Connecting plate 2; 13. Mounting plate; 14. Handle 2; 15. Pipeline; 16. Washing assembly; 17. Infusion tube 1; 18. Injection assembly; 19. Separation assembly; 20. Detection assembly; 21. Infusion tube 2; 22. Infusion tube 3; 23. Data processing assembly; 24. Waste liquid pipe; 25. Infusion tube 4; 26. Infusion tube 5; 27. Pump body; 28. Infusion tube 6; 29. ​​Collecting tank; 30. Ring 1; 31. Ring hole 1; 32. Annular screw groove 1; 33. Threaded ring 1 ;34. Hose;35. Connecting plate three;36. Long plate;37. Detection ring;38. Moving plate;39. Mounting hole one;40. Through hole three;41. Turntable one;42. Round rod one;43. Gear one;44. Motor one;45. Round hole one;46. Screw;47. Long groove;48. Connecting block;49. Mounting hole two;50. Threaded hole;51. Liquid storage tank;52. Through hole four;53. Turntable two;54. Round rod two;55. Gear two;56. Mounting hole three;57. Fixed plate;58. Threaded ring two;59. Annular screw groove two;60. Round ring two;61. Fixed hole;62. Marking ring;63. Through hole five;64. Turntable three;65. Gear three;66. Round hole two;67. Motor two. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figures 1 to 17 , the present invention provides two embodiments:

[0041] Embodiment 1: An automatic cleaning device for the flow path system of an ion chromatograph, comprising an ion chromatograph housing 3 and a fixed plate 57, a pipe 15 being installed on one side of the ion chromatograph housing 3, a hose 34 being connected to the bottom end of the pipe 15, a connecting plate 2 12 being fixed on one side of the ion chromatograph housing 3, a long plate 36 being fixed on the lower surface of the connecting plate 2 12, a movable plate 38 being movably connected to the front end of the long plate 36, and the movable plate 38 being fixed to the hose 34, a connecting plate 11 being fixed on one side of the lower surface of the ion chromatograph housing 3, a liquid storage tank 2 being installed on the lower surface of the connecting plate 11, and a collecting tank 5 being installed on the other side of the lower surface of the ion chromatograph housing 3.

[0042] A long slot 47 is formed at the front end of the long plate 36, and a connecting block 48 is inserted into the long slot 47. A threaded hole 50 is formed on the upper surface of the connecting block 48. A circular hole 45 is formed at the bottom end of the long plate 36. A motor 44 is fixed to the bottom end of the long plate 36. The top end of the transmission shaft of the motor 44 extends into the circular hole 45. A screw 46 is fixed to the top end of the transmission shaft of the motor 44. The top end of the screw 46 passes through the threaded hole 50 and is threadedly connected. A movable plate 38 is fixed to the front end of the connecting block 48. A mounting hole 2 49 is formed on the upper surface of the movable plate 38. The bottom end of the hose 34 passes through the mounting hole 2 49 and is fixed.

[0043] A movable plate 38 driven by a screw 46 is mounted on the long plate 36. The screw 46 is rotated by a motor 44, allowing the movable plate 38 to move up and down as needed, thereby adjusting the horizontal position of the hose 34. This enables automatic expansion and contraction and positioning of the hose 34, making the cleaning process more flexible and adaptable to cleaning and suction at different locations, while also improving the degree of automation of the operation.

[0044] Motor 1 44 and motor 2 67 are externally connected to a conventional power supply, which provides power to motor 1 44 and motor 2 67 to facilitate the operation of motor 1 44 and motor 2 67.

[0045] Motor 1 44 and Motor 2 67 are servo motors. Their structure primarily consists of a motor, an encoder, and a control driver. The motor typically employs a permanent magnet synchronous motor or a brushless DC motor. The stator consists of multiphase windings, while the rotor utilizes high-performance permanent magnets to enhance magnetic field strength. The encoder, mounted on the motor shaft, detects rotor position and speed in real time and feeds the signal back to the controller, creating a closed-loop control loop. The driver receives command signals from the control system and, combined with encoder feedback, uses PWM modulation to adjust the stator winding current and phase, thereby precisely controlling the motor's torque and speed.

[0046] The working principle of servo motors is based on closed-loop control. When the control system issues a position, speed or torque command, the driver compares the feedback signal with the target value, calculates the error and adjusts the output current to make the motor respond quickly and stabilize at the target state.

[0047] The front end of the ion chromatograph housing 3 is provided with a groove 6, the rear end of the inner wall of the groove 6 is provided with a groove 2 7, the housing cover 4 is inserted into the groove 6, a through hole 8 is provided on one side of the ion chromatograph housing 3, a through hole 29 is provided on the lower surface of the ion chromatograph housing 3, a mounting plate 13 is installed in the groove 27, a rinsing assembly 16 is installed on the front end of the mounting plate 13, an infusion tube 6 28 is installed on the lower end of the rinsing assembly 16, a pump body 27 is installed on the infusion tube 6 28, a pipe 15 is installed on one side of the pump body 27, and one side of the pipe 15 passes through the through hole 8, an infusion tube 17 is installed on the upper end of the rinsing assembly 16, and the infusion tube 1 7. A sampling assembly 18 is mounted on the upper end of the sampling assembly 18. A liquid infusion tube 5 26 is mounted on the lower end of the sampling assembly 18. A separation assembly 19 is mounted on the upper end of the liquid infusion tube 5 26. A liquid infusion tube 4 25 is mounted on the lower end of the separation assembly 19. A data processing assembly 23 is mounted on the upper end of the liquid infusion tube 4 25. A liquid infusion tube 21 is mounted on one side of the data processing assembly 23. A detection assembly 20 is mounted on one side of the liquid infusion tube 21. A liquid infusion tube 3 22 is mounted on the upper end of the data processing assembly 23. The upper end of the liquid infusion tube 3 22 is connected to the detection assembly 20. A waste liquid pipe 24 is mounted on the lower end of the other side of the data processing assembly 23. The bottom end of the waste liquid pipe 24 passes through the through hole 2 9.

[0048] The ion chromatograph housing 3 integrates elution, injection, separation, detection, and data processing to form a complete flow system. The advantages of this integrated design are that it optimizes space utilization, reduces the complexity of external piping, and improves system stability and detection accuracy.

[0049] Four pillars 1 arranged in a rectangular shape are fixed to the lower surface of the ion chromatograph housing 3;

[0050] The bottom of the ion chromatograph housing 3 is provided with four pillars 1 to ensure that the device is placed firmly. This improves the vibration resistance and stability of the device and prevents the accuracy of the test results from being affected by external vibrations.

[0051] In this embodiment, when it is necessary to clean the flow path system of the ion chromatograph after use, when the detection ring 37 recognizes the corresponding marking ring 62, the motor 1 44 is started to rotate the screw 46, and the connecting block 48, the movable plate 38 and the hose 34 can be moved up and down as needed. The bottom end of the hose 34 passes through the through hole 4 52 and the through hole 5 63 and extends into the liquid storage tank 51, so as to facilitate the absorption of the cleaning liquid in the liquid storage tank 51 and facilitate the cleaning of the flow path system of the ion chromatograph.

[0052] Example 2:

[0053] A mounting hole 39 is formed on the upper surface of the second connecting plate 12. A rotary disc 41 is rotatably connected to the mounting hole 39. A through hole 34 is formed on one side of the upper surface of the rotary disc 41. The bottom end of the hose 34 passes through the through hole 340. A round rod 42 is fixed to the lower surface of the rotary disc 41. A gear 43 is fixed to the bottom end of the round rod 42.

[0054] Connecting plate 2 12 is provided with turntable 1 41, which meshes with gear 3 65 driven by motor 2 67 via gear 1 43, driving hose 34 for rotational adjustment, ensuring that hose 34 accurately aligns with different cleaning fluid reservoirs 51. This achieves automatic positioning of hose 34, reduces errors caused by manual adjustment, and improves the accuracy and stability of cleaning fluid switching.

[0055] The upper surface of the connecting plate 11 is provided with a mounting hole 3 56 , the inner wall of which is rotatably connected to the turntable 2 53 , a through hole 4 52 is provided on one side of the upper surface of the turntable 2 53 , a round rod 2 54 is fixed to the upper surface of the turntable 2 53 , and a gear 2 55 is fixed to the top of the round rod 2 54 ;

[0056] Rotary disk 2 53 on connecting plate 11 meshes with gear 3 65 via gear 2 55, driving rotary disk 1 41 and rotary disk 2 53 to rotate, sequentially aligning different cleaning fluid reservoirs 51 with hose 34. This enables automatic switching of reservoirs 51 without manual intervention, improving the efficiency of cleaning fluid replacement and reducing operator workload.

[0057] A connecting plate 3 35 is fixed to one side of the ion chromatograph housing 3 , and a circular hole 2 66 is opened on the upper surface of the connecting plate 3 35 , and a motor 2 67 is fixed to the upper surface of the connecting plate 3 35 , and the bottom end of the transmission shaft provided by the motor 2 67 extends into the circular hole 2 66 , and a rotating rod 3 64 is fixed to the bottom end of the transmission shaft provided by the motor 2 67 , and a gear 3 65 is fixed to the bottom end of the rotating rod 3 64 , and the gear 3 65 is respectively meshed with the gear 1 43 and the gear 2 55 ;

[0058] Gear 3 65, driven by motor 2 67, simultaneously meshes with gear 1 43 and gear 2 55, synchronizing the movements of hose 34 and turntable 2 53. This ensures coordinated operation of hose 34 and turntable 2 53, allowing different cleaning fluid reservoirs 51 to align with hose 34 in sequence, achieving automatic switching of reservoirs 51.

[0059] A second circular ring 60 is fixed to the lower surface of the connecting plate 11, and an annular screw groove 59 is defined on the lower surface of the second circular ring 60. A second threaded ring 58 is fixed to the upper surface of the fixing plate 57, and a fixing hole 61 is defined on the lower surface of the fixing plate 57. The fixing hole 61 is passed through the upper surface of the liquid storage tank 2 and fixed thereto. Three fifth through-holes 63 are defined on the upper surface of the liquid storage tank 2, and the bottom ends of the inner walls of the three fifth through-holes 63 respectively define liquid storage grooves 51. The second threaded ring 58 extends into the second annular screw groove 59 and is threadedly connected thereto. A handle 10 is fixed to each side of the outer wall of the liquid storage tank 2.

[0060] The liquid storage tank 2 is connected to the fixed plate 57 through the threaded ring 2 58, which is convenient for disassembly and replacement of different cleaning liquids. It is convenient for maintenance and replenishment of cleaning liquid. At the same time, the sealing design is adopted to prevent leakage of cleaning liquid and ensure the cleanliness and safety of the experimental environment.

[0061] A detection ring 37 is installed at the bottom end of the hose 34, and marking rings 62 are installed on the inner walls of the three through holes 63 respectively;

[0062] A detection ring 37 is provided at the bottom of the hose 34, and a marking ring 62 is provided in the through hole 5 63 of the liquid storage tank 2 for identifying and locating different cleaning fluids. This improves the accuracy of cleaning fluid selection, avoids misoperation, and enhances the intelligence of the system.

[0063] The cooperative working principle of the detection ring 37 and the marking ring 62 is mainly based on optical or electromagnetic induction technology, so as to achieve accurate matching between the hose 34 and different cleaning liquids in the liquid storage tank 2.

[0064] The detection ring 37 is usually integrated at the end of the hose 34, with a sensor embedded inside, and the marking ring 62 is fixed around the through hole five 63 of the liquid storage tank 2. Each marking ring 62 carries unique identification information. When the motor two 67 drives the turntable two 53 to rotate, the marking ring 62 moves synchronously with the through hole five 63, and the detection ring 37 approaches the target liquid storage tank 51 through the displacement or rotation of the hose 34. Once the detection ring 37 and the marking ring 62 enter the effective sensing range, the sensor will capture the characteristic signal of the marking ring 62 in real time and feed the information back to the control system. The system confirms the type of cleaning fluid corresponding to the current marking ring 62 by comparing it with the preset cleaning fluid parameter library, thereby determining whether the hose 34 is accurately aligned with the target liquid storage tank 51. If the detection ring 37 fails to recognize the matching signal, the system will trigger an adjustment instruction to fine-tune the position of the hose 34 or the liquid storage tank 2 until the signal matches successfully.

[0065] This design not only avoids errors in manual selection of cleaning fluids, but also ensures that the cleaning fluid sources of the flow system are absolutely matched in complex multi-fluid switching scenarios.

[0066] A circular ring 30 is fixed to the other side of the lower surface of the ion chromatograph housing 3. A ring hole 31 is formed on the lower surface of the circular ring 30. An annular screw groove 32 is formed on the lower surface of the circular ring 30. A collection groove 29 is formed on the upper surface of the collection tank 5. A threaded ring 33 is fixed to the upper surface of the collection tank 5. The threaded ring 33 extends into the annular screw groove 32 and is threadedly connected. Handles 14 are fixed to both sides of the outer wall of the collection tank 5.

[0067] The collection tank 5 is connected to the ion chromatograph housing 3 via a threaded ring 33, making it easy to disassemble and clean the waste liquid. This improves the convenience of waste liquid collection and prevents waste liquid from overflowing and contaminating the equipment.

[0068] In this embodiment, when it is necessary to clean the flow path system of the ion chromatograph after use, different cleaning liquids are placed in three different liquid storage tanks 51, and the second motor 67 is started to rotate the third rotating rod 64 and the third gear 65, while driving the first gear 43 and the second gear 55 to rotate, so that the turntable 1 41, the hose 34 and the second turntable 53 can be rotated as needed. The detection ring 37 installed at the bottom end of the hose 34 can identify the multiple marking rings 62 in the liquid storage tank 2. When the corresponding marking ring 62 is identified, the hose 34 stops rotating, and then the hose 34 is allowed to enter the liquid storage tank 51 to absorb the cleaning liquid, flush the ion chromatograph flow path system, and then enter the collection tank 29. This achieves the effect of being able to select different cleaning liquids to clean the ion chromatograph flow path system as needed, saving time and effort, and improving work efficiency.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An automatic cleaning device for an ion chromatograph flow path system, comprising an ion chromatograph housing (3) and a fixed disk (57), characterized in that: A pipe (15) is installed on one side of the ion chromatograph housing (3), and a hose (34) is sleeved on the bottom end of the pipe (15). A connecting plate 2 (12) is fixed on one side of the ion chromatograph housing (3), and a long plate (36) is fixed on the lower surface of the connecting plate 2 (12). The front end of the long plate (36) is movably connected to a movable plate (38), and the movable plate (38) is fixed to the hose (34). A connecting plate 1 (11) is fixed on one side of the lower surface of the ion chromatograph housing (3), and a liquid storage tank (2) is installed on the lower surface of the connecting plate 1 (11). A collecting tank (5) is installed on the other side of the lower surface of the ion chromatograph housing (3).

2. The automatic cleaning device for the flow path system of an ion chromatograph according to claim 1, characterized in that: The upper surface of the connecting plate 2 (12) is provided with a mounting hole 1 (39), and a rotating disc 1 (41) is rotatably connected in the mounting hole 1 (39). A through hole 3 (40) is provided on one side of the upper surface of the rotating disc 1 (41), and the bottom end of the hose (34) passes through the through hole 3 (40). A round rod 1 (42) is fixed on the lower surface of the rotating disc 1 (41), and a gear 1 (43) is fixed at the bottom end of the round rod 1 (42).

3. The automatic cleaning device for the flow path system of an ion chromatograph according to claim 1, characterized in that: The front end of the long plate (36) is provided with a long groove (47), the long groove (47) is inserted into the connecting block (48), the upper surface of the connecting block (48) is provided with a threaded hole (50), the bottom end of the long plate (36) is provided with a round hole (45), the bottom end of the long plate (36) is fixed with a motor (44), the top end of the transmission shaft of the motor (44) extends into the round hole (45), the top end of the transmission shaft of the motor (44) is fixed with a screw (46), the top end of the screw (46) passes through the threaded hole (50) and is threadedly connected, the front end of the connecting block (48) is fixed with a movable plate (38), the upper surface of the movable plate (38) is provided with a mounting hole (49), the bottom end of the hose (34) passes through the mounting hole (49) and is fixed.

4. The automatic cleaning device for the flow path system of an ion chromatograph according to claim 1, characterized in that: The upper surface of the connecting plate 1 (11) is provided with a mounting hole 3 (56), the inner wall of the mounting hole 3 (56) is rotatably connected to the turntable 2 (53), a through hole 4 (52) is provided on one side of the upper surface of the turntable 2 (53), a round rod 2 (54) is fixed on the upper surface of the turntable 2 (53), and a gear 2 (55) is fixed on the top of the round rod 2 (54).

5. An automatic cleaning device for an ion chromatograph flow path system according to claim 2 or 4, characterized in that: A connecting plate three (35) is fixed on one side of the ion chromatograph housing (3), and a circular hole two (66) is opened on the upper surface of the connecting plate three (35). A motor two (67) is fixed on the upper surface of the connecting plate three (35), and the bottom end of the transmission shaft provided by the motor two (67) extends into the circular hole two (66). A rotating rod three (64) is fixed on the bottom end of the transmission shaft provided by the motor two (67), and a gear three (65) is fixed on the bottom end of the rotating rod three (64), and the gear three (65) is respectively engaged with the gear one (43) and the gear two (55).

6. The automatic cleaning device for the flow path system of an ion chromatograph according to claim 1, characterized in that: A circular ring 2 (60) is fixed on the lower surface of the connecting plate 1 (11), and an annular screw groove 2 (59) is provided on the lower surface of the circular ring 2 (60). A threaded ring 2 (58) is fixed on the upper surface of the fixing plate (57), and a fixing hole (61) is provided on the lower surface of the fixing plate (57). The upper surface of the liquid storage tank (2) passes through the fixing hole (61) and is fixed. Three through holes 5 (63) are provided on the upper surface of the liquid storage tank (2), and the bottom ends of the inner walls of the three through holes 5 (63) are respectively provided with liquid storage tanks (51). The threaded ring 2 (58) extends into the annular screw groove 2 (59) and is threadedly connected. Handles 1 (10) are respectively fixed on both sides of the outer wall of the liquid storage tank (2).

7. The automatic cleaning device for the flow path system of an ion chromatograph according to claim 6, characterized in that: A detection ring (37) is installed at the bottom end of the hose (34), and marking rings (62) are installed on the inner walls of the three through holes (63).

8. The automatic cleaning device for the flow path system of an ion chromatograph according to claim 1, characterized in that: A circular ring (30) is fixed on the other side of the lower surface of the ion chromatograph housing (3), a ring hole (31) is provided on the lower surface of the circular ring (30), an annular screw groove (32) is provided on the lower surface of the circular ring (30), a collecting groove (29) is provided on the upper surface of the collecting tank (5), a threaded ring (33) is fixed on the upper surface of the collecting tank (5), the threaded ring (33) extends into the annular screw groove (32) and is threadedly connected, and two handles (14) are fixed on both sides of the outer wall of the collecting tank (5).

9. The automatic cleaning device for the flow path system of an ion chromatograph according to claim 1, characterized in that: The front end of the ion chromatograph housing (3) is provided with a groove 1 (6), the rear end of the inner wall of the groove 1 (6) is provided with a groove 2 (7), the housing cover (4) is inserted into the groove 1 (6), a through hole 1 (8) is provided on one side of the ion chromatograph housing (3), a through hole 2 (9) is provided on the lower surface of the ion chromatograph housing (3), a mounting plate (13) is installed in the groove 2 (7), a rinsing assembly (16) is installed on the front end of the mounting plate (13), a liquid infusion pipe 6 (28) is installed on the lower end of the rinsing assembly (16), a pump body (27) is installed on one side of the pump body (27), a pipe (15) is installed on one side of the pipe (15), a through hole 1 (8) is passed through on one side of the pipe (15), a liquid infusion pipe 1 (17) is installed on the upper end of the rinsing assembly (16), The upper end of the infusion tube 1 (17) is installed with a sample injection assembly (18), the lower end of the sample injection assembly (18) is installed with an infusion tube 5 (26), the upper end of the infusion tube 5 (26) is installed with a separation assembly (19), the lower end of the separation assembly (19) is installed with an infusion tube 4 (25), the upper end of the infusion tube 4 (25) is installed with a data processing assembly (23), one side of the data processing assembly (23) is installed with an infusion tube 2 (21), one side of the infusion tube 2 (21) is installed with a detection assembly (20), the upper end of the data processing assembly (23) is installed with an infusion tube 3 (22), the upper end of the infusion tube 3 (22) is connected to the detection assembly (20), the lower end of the other side of the data processing assembly (23) is installed with a waste liquid pipe (24), and the bottom end of the waste liquid pipe (24) passes through the through hole 2 (9).

10. The automatic cleaning device for the flow path system of an ion chromatograph according to claim 1, characterized in that: Four pillars (1) arranged in a rectangular shape are fixed on the lower surface of the ion chromatograph box (3).

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