An online Karl Fischer coulometric method moisture microanalyzer

Abstract

The application relates to the technical field of water content analyzers, and discloses an online Karl Fischer coulometric water microanalyzer, which comprises a machine body, an electrolytic cell is arranged on the top of the machine body, a plurality of joints are integrally formed on the top outer wall of the electrolytic cell, two joints are both internally inserted with connecting rods, the bottom of each connecting rod is provided with an electrode rod through an adjusting mechanism, the two electrode rods are respectively used for electrolysis and micro measurement, the adjusting mechanism is used for adjusting the height of the electrode rod, the top of each connecting rod is provided with an electric wire which is electrically connected with the electrode rod, and the connecting rod and the joint are fixedly connected through a locking assembly. Through cooperation of the multiple components, the electrode rod can be disassembled for cleaning, can be fixed after being reinstalled, is more stably fixed, can be more uniformly smeared with silicon grease, and the accuracy of micro detection of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of moisture analyzer technology, specifically to an online Karl Fischer coulometric moisture trace analyzer. Background Technology

[0002] A moisture analyzer is an instrument that separates or detects moisture in a sample using physical or chemical methods. Common detection methods include Karl Fischer method, infrared drying method, microwave drying method, and resistance / capacitance method. Among them, Karl Fischer method is suitable for the detection of trace moisture.

[0003] The electrode rods of a moisture analyzer need to be cleaned regularly to ensure the measurement accuracy of the moisture analyzer. Currently, cleaning the electrode rods requires steps such as wiping the surface, soaking in cleaning solution, rinsing with pure water after cleaning, and drying and activating after rinsing. At the same time, it is also necessary to remove the silicone grease from the connector on the top of the electrode rod and reapply silicone grease before the electrode rod can be reused.

[0004] A search revealed Chinese patent CN217484247U, which discloses an online coulometric trace moisture determination device. This device improves work efficiency, avoids the safety risks and potential harm to laboratory personnel associated with offline analysis of special toxic or hazardous samples, and saves on labor and management costs associated with repetitive experiments. However, it still has the following problems:

[0005] 1. During use, especially after each use, organic matter is very likely to adhere to the electrodes, making it difficult to disassemble them and resulting in inaccurate measurement data.

[0006] 2. Because the analyzer generates gas during use, sometimes due to operator error, the gas accumulates in the electrolytic cell, which increases the pressure in the electrolytic cell. This can easily cause the electrodes to be pushed out, resulting in a change in the position of the electrodes and damage to the exchange membrane, thus rendering the electrolytic cell unusable.

[0007] 3. After cleaning the electrode, silicone grease needs to be applied to the connection between the electrode and the electrolytic cell. Manual application can easily result in uneven application of the silicone grease, which will lead to a poor sealing effect at the connection between the electrode and the electrolytic cell, thus affecting the measurement results. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides an online Karl Fischer coulometric moisture trace analyzer. The main solution is to address the problems of organic matter easily adhering to the electrodes during use, especially after each use, making electrode disassembly difficult and leading to inaccurate measurement data. Additionally, after cleaning the electrodes, applying silicone grease to the connection between the electrode and the electrolytic cell requires manual application, which can result in uneven grease application and a poor seal at the connection, thus affecting measurement results.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] An online Karl Fischer coulometric moisture trace analyzer includes a body with an electrolytic cell placed on top. Multiple connectors are integrally formed on the outer wall of the top of the electrolytic cell, with connecting rods inserted into two of the connectors. Electrode rods are mounted on the bottom of the connecting rods via an adjustment mechanism. The two electrode rods are used for electrolysis and trace measurement, respectively. The adjustment mechanism is used to adjust the height of the electrode rods. A wire electrically connected to the electrode rod is located on the top of the connecting rod. The connecting rod and connector are fixedly connected by a locking assembly, and the connection point is tapered. An iron frame is bolted to one side of the body, holding a test tube. A fixing frame is bolted to the top of the body, with a fixing tube welded to its top. One side of the fixing tube has a grease-applying mechanism for the connection between the connecting rod and connector and a sealing assembly for sealing the test tube. The grease-applying mechanism and the sealing assembly are connected by a folding assembly.

[0011] Furthermore, the adjustment mechanism includes a sliding hole at the bottom of the connecting rod, a sliding tube with an electrode rod installed slidably connected in the sliding hole, a threaded groove at the top of the outer circumference of the sliding tube, a rotatable handle threaded to the threaded groove at the middle part of the connecting rod, and a limiting component in the sliding hole that allows the sliding tube to move only up and down.

[0012] Based on the aforementioned scheme, the limiting component includes a limiting rod welded to the inner wall of the sliding hole, a clearance groove is provided at the flush position of the limiting rod and the throttle, and a guide groove for placing the limiting rod is provided on the outer circumference of the sliding tube.

[0013] As a further embodiment of the present invention, the locking assembly includes a limiting ring bonded to the outer circumference of the connecting rod, the inner circumference of the limiting ring having a groove, a fixing ring bonded to the outer circumference of the connector, a support frame inserted into the groove bonded to the top of the fixing ring, an elastic cloth bonded between the support frame and the fixing ring, a through hole being formed on the inner circumference of the connector and the limiting ring, and a sealing assembly for secondary sealing being provided between the connector and the connecting rod.

[0014] Furthermore, the sealing assembly includes a mounting groove formed on the inner circumference of the joint, and a sealing ring that can contact the connecting rod is placed in the mounting groove.

[0015] Based on the aforementioned scheme, the application mechanism includes a slide that slides on the outer wall of one side of the fixed tube. A tapered tube is welded to one end of the slide. A groove is opened on one side of the tapered tube. A movable frame is slidably connected in the groove. A scraper is welded to one end of the movable frame. A pushing component is provided on the outer wall of one side of the tapered tube to push the movable frame into the tapered tube. A rotating ring is rotatably connected to the top of the tapered tube. A rubber ball that can contact the connecting rod is glued to the inner circumference of the rotating ring. A height adjustment component is provided on the outer circumference of the rotating ring to adjust the height of the tapered tube. A nozzle for spraying silicone grease is fixed to the outer circumference of the tapered tube by bolts. A collection groove is opened at the bottom end of the inner circumference of the tapered tube.

[0016] As a further embodiment of the present invention, the height adjustment component includes a lead screw fixed to the inner wall of the bottom of the fixed tube by bolts, a slide rod that slides inside the fixed tube is sleeved on the outer circumference of the lead screw, a driven gear that is threadedly connected to the top of the slide rod is rotatably connected to the lead screw, a driving gear that meshes with the driven gear and an annular block located above the driving gear are fixed to the outer circumference of the rotating ring by bolts, and a plurality of placement grooves are provided on the outer circumference of the slide rod, in which ball bearings roll.

[0017] Furthermore, the pushing assembly includes a plurality of guide rods bonded to the outer wall of one side of the tapered tube and slidably connected to the movable frame. A tension spring is fixed to the inner wall of one side of the movable frame by bolts, and the other end of the tension spring is fixed to the tapered tube.

[0018] Based on the aforementioned scheme, the sealing assembly includes a rotating tube that rotates on the inner circumference of the fixed tube, a sealing frame that passes through the fixed tube is welded to one side of the outer wall of the rotating tube, a clearance opening that passes through the sealing frame is provided at the top of the sealing frame, and multiple arc-shaped grooves are provided on the inner circumference of the rotating tube.

[0019] As a further embodiment of the present invention, the folding assembly includes a ring frame welded to one side of the fixed tube, a corrugated tube bonded to the top of the ring frame, and the other end of the corrugated tube being fixed to the coating mechanism.

[0020] Compared with the prior art, the present invention provides an online Karl Fischer coulometric moisture trace analyzer, which has the following advantages:

[0021] 1. The present invention, through the coordinated use of multiple components, can not only disassemble the electrode rod for cleaning, but also fix it after reinstallation, making it more secure, and can also apply silicone grease more evenly, thereby improving the accuracy of the device's micro-detection.

[0022] 2. The present invention has an adjustment mechanism that can adjust the height of the electrode rod so that the electrode rod can be completely submerged in the electrolyte or cleaning solution, thereby achieving better electrolysis or cleaning effect and improving the applicability of the device.

[0023] 3. The present invention has a locking component, which expands and deforms the elastic cloth and enters the groove to fix the connecting rod, making it difficult for the connecting rod to be pushed out of the joint, thus improving the stability of the electrode rod fixation.

[0024] 4. The present invention has an application mechanism. Rotating the ring counterclockwise allows the scraper to clean the residual silicone grease from the previous application, while rotating the ring clockwise allows the scraper to evenly spread the silicone grease applied this time, thereby achieving different functions.

[0025] 5. The present invention has a height adjustment component, in which the driven gear, slide bar, and tapered tube move downwards synchronously, so that the electrode rod enters the cleaning solution during the process of the scraper scraping off the silicone grease, thereby improving the convenience of cleaning the device.

[0026] 6. The present invention provides a pushing component, which causes the moving frame and scraper to be subjected to a continuous force moving into the conical tube, thereby cleaning the silicone grease at the connecting rod more thoroughly and improving the cleanliness of the silicone grease.

[0027] 7. The present invention, by providing a sealing component, can seal and preserve the cleaning solution in the test tube, making the cleaning solution less prone to evaporation and improving the service life of the cleaning solution.

[0028] 8. The present invention provides a folding component to create a protective barrier between the test tube and the conical tube, preventing foreign matter from entering the cleaning solution and improving the protective effect of the device.

[0029] 9. The present invention, through the combined use of the coating mechanism, the height adjustment component, the pushing component and the folding component, allows for the scraping, coating and cleaning of the silicone grease on the connecting rod after it is inserted into the tapered tube, simply by rotating the rotating ring or the connecting rod in both directions, thereby reducing the workload of the workers and further reducing the risk of the connecting rod being contaminated. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural schematic diagram of an online Karl Fischer coulometric moisture trace analyzer proposed in this invention;

[0031] Figure 2 This is a schematic diagram of the enlarged structure of the electrolytic cell of an online Karl Fischer coulometric moisture trace analyzer proposed in this invention;

[0032] Figure 3 This invention proposes an online Karl Fischer coulometric moisture trace analyzer. Figure 1 A partially enlarged structural diagram;

[0033] Figure 4 This is a schematic cross-sectional view of the connector structure of an online Karl Fischer coulometric moisture trace analyzer proposed in this invention.

[0034] Figure 5 This invention proposes an online Karl Fischer coulometric moisture trace analyzer. Figure 4 A magnified structural diagram of part A;

[0035] Figure 6 This is a schematic diagram of the enlarged connecting rod structure of an online Karl Fischer coulometric moisture trace analyzer proposed in this invention.

[0036] Figure 7 This invention proposes an online Karl Fischer coulometric moisture trace analyzer. Figure 6 A partial sectional view of the structure;

[0037] Figure 8 This is a schematic diagram of the enlarged bellows structure of an online Karl Fischer coulometric moisture trace analyzer proposed in this invention.

[0038] Figure 9 This invention proposes an online Karl Fischer coulometric moisture trace analyzer. Figure 8 A partially enlarged structural diagram;

[0039] Figure 10 This is a schematic cross-sectional view of the fixed tube structure of an online Karl Fischer coulometric moisture trace analyzer proposed in this invention.

[0040] Figure 11 This is a schematic cross-sectional view of the rotating tube structure of an online Karl Fischer coulometric moisture trace analyzer proposed in this invention.

[0041] Figure 12 This is a schematic diagram of the enlarged conical tube structure of an online Karl Fischer coulometric moisture trace analyzer proposed in this invention.

[0042] Figure 13 This is a schematic diagram of the conical tube cross-sectional structure of an online Karl Fischer coulometric moisture trace analyzer proposed in this invention.

[0043] In the diagram: 1. Body; 2. Electrolytic cell; 3. Fixing frame; 4. Test tube; 5. Iron stand; 6. Connector; 7. Connecting rod; 8. Wire; 9. Rotary handle; 10. Limiting ring; 11. Fixing ring; 12. Conical surface; 13. Through hole; 14. Support frame; 15. Elastic cloth; 16. Groove; 17. Sealing ring; 18. Mounting groove; 19. Sliding tube; 20. Electrode rod; 21. Limiting rod; 22. Alternating groove; 23. Guide groove; 24. Threaded groove; 25. Sealing frame; 26. Corrugated pipe; 27. Tapered pipe; 28. Fixed pipe; 29. ​​Ring frame; 30. Slide; 31. Slide rod; 32. Driven gear; 33. Rotating pipe; 34. Alternating opening; 35. Lead screw; 36. Arc groove; 37. Ball bearing; 38. Placement groove; 39. Drive gear; 40. Ring block; 41. Rotating ring; 42. Rubber ball; 43. Slide groove; 44. Collection groove; 45. Moving frame; 46. Tension spring; 47. Guide rod; 48. Scraper; 49. Nozzle. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0045] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] Reference Figures 1-13 An online Karl Fischer coulometric moisture analyzer includes a body 1, which is a commercially available Karl Fischer coulometric moisture analyzer. Since the Karl Fischer coulometric moisture analyzer is existing technology, it will not be described in detail here. The body 1 is electrically connected to an external control box, enabling online connection. The external control box is the control box mentioned in the cited patent document. An electrolytic cell 2 is placed on the top of the body 1. Multiple connectors 6 are integrally formed on the outer wall of the top of the electrolytic cell 2. These connectors 6 are connected to other connecting pipes on the analyzer, with two connectors 6 containing connecting rods. 7. The bottom of the connecting rod 7 is equipped with electrode rods 20 via an adjustment mechanism. The two electrode rods 20 are respectively the electrolytic electrode and the micro-measuring electrode. The adjustment mechanism is used to adjust the height of the electrode rods 20. The remaining connectors 6 are used to connect the liquid level electrode to various locations, including the sample inlet, the exhaust port of the measuring electrolytic bottle, the equilibrium liquid port, the reagent inlet, and the waste liquid outlet, thus making the electrolytic cell a complete measuring electrolytic bottle. The top of the connecting rod 7 is equipped with a wire 8 electrically connected to the electrode rods 20. The wire 8 is electrically connected to the body 1. The connecting rod 7 and the connectors 6 are fixedly connected by a locking assembly. The connection point is a conical surface 12. An iron frame 5 is bolted to one side of the machine body 1, holding a test tube 4. The test tube 4 contains a cleaning solution specifically for the electrode rod 20, such as Mettler's original electrode cleaning solution. A fixing bracket 3 is bolted to the top of the machine body 1, and a fixing tube 28 is welded to the top of the fixing bracket 3. One side of the fixing tube 28 is equipped with a grease-applying mechanism for the connection between the connecting rod 7 and the connector 6, and a sealing assembly for sealing the test tube 4. The grease-applying mechanism and the sealing assembly are connected by a folding assembly. When cleaning the electrode rod 20 is required, the connecting rod is pulled out. 7. Remove electrode rod 20 from electrolytic cell 2, then contact the sealing assembly to seal test tube 4, place electrode rod 20 into test tube 4 and soak for a period of time. Use the applicator to apply silicone grease to the connection between connecting rod 7 and connector 6, thereby achieving automatic silicone grease application and more even application. Then, reinsert the cleaned electrode rod 20 into electrolytic cell 2 and use the locking assembly to fix connecting rod 7, so that connecting rod 7 will not be pushed out by internal gas, thus making the electrode rod 20 more secure. Since electrode rod 20 can be disassembled, it is more convenient to clean.

[0048] To adjust the height of the electrode rod 20 within the test tube 4 or electrolytic cell 2, the adjustment mechanism of this invention includes a sliding hole at the bottom of the connecting rod 7. A sliding tube 19, on which the electrode rod 20 is mounted, is slidably connected within the sliding hole. A threaded groove 24 is provided at the top of the outer circumference of the sliding tube 19. A rotating handle 9, threadedly connected to the threaded groove 24, is rotatably connected to the middle part of the connecting rod 7. A limiting component is provided within the sliding hole, allowing the sliding tube 19 to move only up and down. By rotating the handle 9, the sliding tube 19 slides within the sliding hole under the action of the limiting component and the thread, thereby adjusting the height of the electrode rod 20 so that it can be completely submerged in the electrolyte or cleaning solution, thus achieving better electrolysis or cleaning effects and improving the applicability of the device.

[0049] In order to ensure that the slide tube 19 can only slide up and down within the slide hole, the limiting component in this invention includes a limiting rod 21 welded to the inner wall of the slide hole. A clearance groove 22 is provided at the flush position of the limiting rod 21 and the throttle 9. A guide groove 23 for placing the limiting rod 21 is provided on the outer circumference of the slide tube 19. Since the limiting rod 21 slides within the guide groove 23, the slide tube 19 cannot rotate. As a result, the slide tube 19 moves up and down during the rotation of the throttle 9, thereby improving the adjustment stability of the device.

[0050] To secure the connecting rod 7 and the electrode rod 20, the locking assembly of this invention includes a limiting ring 10 bonded to the outer circumference of the connecting rod 7. The inner circumference of the limiting ring 10 has a groove 16. A fixing ring 11 is bonded to the outer circumference of the connector 6. A support frame 14, inserted into the groove 16, is bonded to the top of the fixing ring 11. An elastic cloth 15, preferably latex or elastic rubber, is bonded between the support frame 14 and the fixing ring 11. Through holes 13 are provided between the connector 6 and the inner circumference of the limiting ring 10. A sealing component for secondary sealing is provided between the connector 6 and the connecting rod 7. When the connecting rod 7 is inserted into the connector 6, the support frame 14 will be inserted into the groove 16. At this time, the elastic cloth 15 is located in the groove 16. When the connecting rod 7 is inserted into the connector 6, the air between them will enter between the elastic cloth 15 and the connecting rod 7 through the through hole 13, thereby squeezing the elastic cloth 15 to expand and deform, and thus enter the groove 16, thereby fixing the connecting rod 7, making it difficult for the connecting rod 7 to be pushed out of the connector 6, and improving the stability of the electrode rod 20.

[0051] In order to achieve secondary sealing between the connecting rod 7 and the connector 6, the sealing component of the present invention includes an installation groove 18 formed on the inner circumference of the connector 6, and a sealing ring 17 that can contact the connecting rod 7 is placed in the installation groove 18, thereby further improving the sealing performance of the connection between the connecting rod 7 and the connector 6.

[0052] To apply silicone grease to the connecting rod 7, the application mechanism in this invention includes a slide 30 that slides on the outer wall of one side of the fixed tube 28. A tapered tube 27 is welded to one end of the slide 30. A groove 43 is provided on one side of the tapered tube 27. A movable frame 45 is slidably connected in the groove 43. A scraper 48 is welded to one end of the movable frame 45. A pushing component is provided on the outer wall of one side of the tapered tube 27 to push the movable frame 45 into the tapered tube 27. A rotating ring 41 is rotatably connected to the top of the tapered tube 27. A rubber ball 42 that can contact the connecting rod 7 is adhered to the inner circumference of the rotating ring 41. A height adjustment component is provided on the outer circumference of the rotating ring 41 to adjust the height of the tapered tube 27. A nozzle 49 for spraying silicone grease is fixed to the outer circumference of the tapered tube 27 by bolts. The other end of the nozzle 49 is connected to a pneumatic dispensing machine. A collection groove is provided at the bottom end of the inner circumference of the tapered tube 27. 44. The inner diameter of the collection tank 44 is the same as the diameter of the connecting rod 7. When the connecting rod 7 is inserted into the tapered tube 27, it will be squeezed and fixed by the rubber ball 42. At the same time, the scraper 48 contacts the connecting rod 7 under the action of the pushing component. The rotating ring 41 is rotated counterclockwise, and the rotating ring 41 drives the connecting rod 7 to rotate, cleaning the residual silicone grease on the surface of the connecting rod 7. Since the inner diameter of the collection tank 44 is the same as the diameter of the connecting rod 7, all the cleaned silicone grease will fall into the collection tank 44. Under the action of the height adjustment component, the folding component will shrink, so that the electrode rod 20 is inserted into the cleaning liquid, and then the electrode rod 20 is cleaned. After cleaning, the pneumatic dispensing machine is started, so that new silicone grease is sprayed from the nozzle 49 and falls on the connecting rod 7. The rotating ring 41 is reversed, and the scraper 48 smooths the silicone grease, so that the silicone grease is applied more evenly, improving the uniformity of the device application.

[0053] To achieve height adjustment of the tapered tube 27, the height adjustment component of this invention includes a lead screw 35 fixed to the inner wall of the bottom of the fixed tube 28 by bolts. A slide rod 31 that slides inside the fixed tube 28 is sleeved on the outer circumference of the lead screw 35. A driven gear 32 that is threadedly connected to the top of the slide rod 31 is rotatably connected to the lead screw 35. A driving gear 39 that meshes with the driven gear 32 and an annular block 40 located above the driving gear 39 are fixed to the outer circumference of the rotating ring 41 by bolts. Multiple placement grooves 38 are opened on the outer circumference of the slide rod 31. Ball bearings 37 roll in the placement grooves 38. The rotation of the rotating ring 41 will drive the driving gear 39 to rotate, thereby driving the driven gear 32 to rotate. Under the action of the thread, the driven gear 32 moves downward synchronously with the slide rod 31 and the tapered tube 27, so that the electrode rod 20 enters the cleaning solution during the process of scraping off the silicone grease by the scraper 48, thereby improving the convenience of cleaning the device.

[0054] To enable the movable frame 45 to move into the conical tube 27, the pushing component in this invention includes multiple guide rods 47 bonded to one side of the outer wall of the conical tube 27 and slidably connected to the movable frame 45. A tension spring 46 is fixed to one side of the inner wall of the movable frame 45 by bolts, and the other end of the tension spring 46 is fixed to the conical tube 27. When the connecting rod 7 enters the conical tube 27, the connecting rod 7 will squeeze the scraper 48 and the movable frame 45 to move outward, thereby deforming the tension spring 46 to generate tension, which in turn causes the movable frame 45 and the scraper 48 to be subjected to a continuous force to move into the conical tube 27, thereby cleaning the silicone grease at the connecting rod 7 more thoroughly and improving the cleanliness of the silicone grease.

[0055] To preserve the test tube 4, the sealing assembly of this invention includes a rotating tube 33 that rotates on the inner circumference of the fixed tube 28. A sealing frame 25, passing through the fixed tube 28, is welded to one outer wall of the rotating tube 33. A clearance opening 34, penetrating the sealing frame 25, is provided at the top of the sealing frame 25. Multiple arc-shaped grooves 36 are provided on the inner circumference of the rotating tube 33, and a ball bearing 37 is located in the arc-shaped groove 36. As the slide rod 31 moves downward, the ball bearing 37 squeezes the arc-shaped groove 36, causing the rotating tube 33 to rotate, thereby causing the sealing frame 25 to rotate, releasing the seal on the test tube 4, allowing the electrode rod 20 to pass through the clearance opening 34 and enter the cleaning solution. After the cleaning solution is used, the cleaning solution is discharged from the test tube 4 and refilled with new cleaning solution. The sealing frame 25 can seal and preserve the cleaning solution in the test tube 4, making the cleaning solution less prone to evaporation and improving the service life of the cleaning solution.

[0056] To achieve a seal between the coating mechanism and the sealing assembly, the folding assembly in this invention includes a circular frame 29 welded to one side of the fixed tube 28. A corrugated tube 26 is bonded to the top of the circular frame 29, and the other end of the corrugated tube 26 is fixed to the conical tube 27 in the coating mechanism. As the conical tube 27 moves downward, it will compress the corrugated tube 26 to shrink, and vice versa, thus creating a protective barrier between the test tube 4 and the conical tube 27, preventing impurities from entering the cleaning solution and improving the protective effect of the device.

[0057] The present invention is used in the following steps:

[0058] S1: When it is necessary to clean the electrode rod 20, pull out the connecting rod 7 to remove the electrode rod 20 from the electrolytic cell 2, and wipe the visible contaminants on the surface of the electrode rod 20 with absorbent paper. After wiping, insert the connecting rod 7 and the electrode rod 20 into the conical tube 27. The connecting rod 7 will be squeezed and fixed by the rubber ball 42, and at the same time, the scraper 48 will contact the connecting rod 7.

[0059] S2: Rotate the rotating ring 41 or the connecting rod 7 counterclockwise to make the rotating ring 41 and the connecting rod 7 rotate synchronously, thereby cleaning the residual silicone grease on the surface of the connecting rod 7. Since the inner diameter of the collection groove 44 is the same as the diameter of the connecting rod 7, all the cleaned silicone grease will fall into the collection groove 44. At the same time, the rotation of the rotating ring 41 will drive the drive gear 39 to rotate, thereby driving the driven gear 32 to rotate. Under the action of the thread, the driven gear 32 moves downward synchronously with the slide rod 31 and the tapered tube 27.

[0060] S3: As the slide bar 31 moves downward, the ball 37 will squeeze the arc groove 36, causing the rotating tube 33 to rotate, thereby causing the sealing frame 25 to rotate, releasing the seal on the test tube 4, allowing the electrode rod 20 to pass through the clearance opening 34 into the cleaning solution, and be completely covered by the cleaning solution on the sensitive part of the electrode.

[0061] S4: After soaking for a period of time, start the pneumatic dispensing machine to spray new silicone grease from the nozzle 49 onto the connecting rod 7, reverse the rotating ring 41, and use the scraper 48 to smooth the silicone grease, so that the silicone grease is evenly applied.

[0062] S5: At the same time, the rotation of the rotating ring 41 will drive the driving gear 39 to rotate, thereby driving the driven gear 32 to rotate. Under the action of the thread, the driven gear 32 moves upward synchronously with the slide bar 31 and the tapered tube 27.

[0063] S6: As the slide bar 31 moves downward, the ball 37 will squeeze the arc groove 36, causing the rotating tube 33 to rotate, thereby causing the sealing frame 25 to rotate. When the electrode rod 20 is above the sealing frame 25, the sealing frame 25 will seal the test tube 4.

[0064] S7: Remove the connecting rod 7 and the electrode rod 20 from the conical tube 27, pour out the cleaning solution in the test tube 4, rinse the surface of the electrode rod 20 with pure water, wipe the cleaned electrode rod 20 with a fibrous soft cloth, then put it in pure water to activate it for a period of time to restore the response capability of the sensitive membrane of the electrode rod 20, and then reinsert the electrode rod 20 into the electrolytic cell 2.

[0065] S8: After the electrode rod 20 is reinserted into the electrolytic cell 2, the remaining cleaning solution on the inner wall of the test tube 4 is rinsed with pure water. After rinsing, the test tube 4 is wiped with a lint-free soft cloth to remove any water stains from the inner wall. Then, a sufficient amount of cleaning solution is added to the test tube 4 and it is reinstalled for easy cleaning next time. This allows the cleaning solution in the test tube 4 to be replaced without affecting the analyzer's detection, reducing the exposure time of the electrode rod 20 and further reducing the risk of the electrode rod 20 being contaminated.

[0066] S9: When the connecting rod 7 is inserted into the connector 6, the support frame 14 will be inserted into the groove 16. At this time, the elastic cloth 15 is located in the groove 16. When the connecting rod 7 is inserted into the connector 6, the air between them will enter between the elastic cloth 15 and the connecting rod 7 through the through hole 13, thereby squeezing the elastic cloth 15 to expand and deform, and thus enter the groove 16, thereby fixing the connecting rod 7 and making it difficult for the connecting rod 7 to be pushed out from the connector 6.

[0067] S10: After installation, the device can be used for micro-detection. Since the electrode rod 20 can be disassembled, it is easier to clean, while also ensuring its sealing and cleanliness.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An online Karl Fischer coulometric moisture trace analyzer, comprising a body (1), wherein an electrolytic cell (2) is placed on top of the body (1), characterized in that, The top outer wall of the electrolytic cell (2) is integrally formed with multiple connectors (6), two of which have connecting rods (7) inserted inside. The bottom of the connecting rods (7) is equipped with electrode rods (20) via an adjustment mechanism. The two electrode rods (20) are used for electrolysis and micro-measurement, respectively. The adjustment mechanism is used to adjust the height of the electrode rods (20). The top of the connecting rods (7) is equipped with wires (8) electrically connected to the electrode rods (20). The connecting rods (7) and connectors (6) are fixedly connected by a locking assembly. The connection point is a conical surface (12). An iron frame (5) is fixedly connected to one side of the body (1). The iron frame (5) holds the test tube (4). A fixed frame (3) is fixedly connected to the top of the body (1). A fixed tube (28) is fixedly connected to the top of the fixed frame (3). A coating mechanism for applying silicone grease to the connection point between the connecting rod (7) and the connector (6) and a sealing component for sealing the test tube (4) are provided on one side of the fixed tube (28). The coating mechanism and the sealing component are connected by a folding component. The coating mechanism includes a slide (30) that slides on the outer wall of one side of a fixed tube (28). One end of the slide (30) is fixedly connected to a tapered tube (27). A groove (43) is provided on one side of the tapered tube (27). A movable frame (45) is slidably connected in the groove (43). A scraper (48) is fixedly connected to one end of the movable frame (45). The outer wall of one side of the tapered tube (27) is provided with a pusher to move the movable frame (45) into the tapered tube (27). The component has a rotating ring (41) rotatably connected to the top of the conical tube (27), and a rubber ball (42) that can contact the connecting rod (7) is fixedly connected to the inner circumference of the rotating ring (41). The outer circumference of the rotating ring (41) is provided with a height adjustment component for adjusting the height of the conical tube (27). The outer circumference of the conical tube (27) is fixedly connected with a nozzle (49) for spraying silicone grease. A collection groove (44) is opened at the bottom of the inner circumference of the conical tube (27). The height adjustment assembly includes a lead screw (35) fixedly connected to the inner wall of the bottom of the fixed tube (28), a slide rod (31) that slides inside the fixed tube (28) is sleeved on the outer circumference of the lead screw (35), a driven gear (32) that is threadedly connected to the top of the slide rod (31), a driving gear (39) that meshes with the driven gear (32) and an annular block (40) located above the driving gear (39) are fixedly connected to the outer circumference of the rotating ring (41), and a plurality of placement grooves (38) are opened on the outer circumference of the slide rod (31), and a ball (37) rolls in the placement groove (38). The sealing assembly includes a rotating tube (33) that rotates on the inner circumference of the fixed tube (28). A sealing frame (25) that passes through the fixed tube (28) is fixedly connected to one side of the outer wall of the rotating tube (33). A clearance opening (34) that passes through the sealing frame (25) is provided at the top of the sealing frame (25). A plurality of arc-shaped grooves (36) are provided on the inner circumference of the rotating tube (33).

2. The online Karl Fischer coulometric moisture trace analyzer according to claim 1, characterized in that, The adjustment mechanism includes a sliding hole at the bottom of the connecting rod (7), a sliding tube (19) on which an electrode rod (20) is slidably connected, a threaded groove (24) is provided at the top of the outer circumference of the sliding tube (19), a rotatable handle (9) threadedly connected to the threaded groove (24) is rotatably connected to the middle part of the connecting rod (7), and a limiting component is provided in the sliding hole to allow the sliding tube (19) to move only up and down.

3. The online Karl Fischer coulometric moisture trace analyzer according to claim 2, characterized in that, The limiting component includes a limiting rod (21) fixedly connected to the inner wall of the sliding hole. A clearance groove (22) is provided at the flush position of the limiting rod (21) and the throttle (9). A guide groove (23) for placing the limiting rod (21) is provided on the outer circumference of the sliding tube (19).

4. The online Karl Fischer coulometric moisture trace analyzer according to claim 1, characterized in that, The locking assembly includes a limiting ring (10) fixedly connected to the outer circumference of the connecting rod (7). The inner circumference of the limiting ring (10) is provided with a groove (16). The outer circumference of the connector (6) is fixedly connected with a fixing ring (11). The top of the fixing ring (11) is fixedly connected with a support frame (14) inserted into the groove (16). An elastic cloth (15) is fixedly connected between the support frame (14) and the fixing ring (11). The inner circumference of the connector (6) and the limiting ring (10) is provided with a through hole (13). A sealing assembly for secondary sealing is provided between the connector (6) and the connecting rod (7).

5. An online Karl Fischer coulometric moisture trace analyzer according to claim 4, characterized in that, The sealing assembly includes a mounting groove (18) formed on the inner circumference of the connector (6), and a sealing ring (17) that can contact the connecting rod (7) is placed in the mounting groove (18).

6. The online Karl Fischer coulometric moisture trace analyzer according to claim 1, characterized in that, The pushing assembly includes a plurality of guide rods (47) fixedly connected to the outer wall of one side of the tapered tube (27) and slidably connected to the movable frame (45). A tension spring (46) is fixedly connected to the inner wall of one side of the movable frame (45), and the other end of the tension spring (46) is fixed to the tapered tube (27).

7. An online Karl Fischer coulometric moisture trace analyzer according to claim 1, characterized in that, The folding assembly includes a ring frame (29) fixedly connected to one side of the fixed tube (28), a corrugated tube (26) fixedly connected to the top of the ring frame (29), and the other end of the corrugated tube (26) fixed to the coating mechanism.

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