Radionuclide Collection System

Abstract

This application relates to the field of materials science, specifically to the preparation of test samples for testing or analysis by determining the chemical or physical properties of materials. More particularly, it relates to a radionuclide collection system for collecting radionuclides from a test liquid. The system includes a reaction vessel, a feeding assembly, a heating and stirring assembly, a discharging assembly, a cleaning assembly, and control components. The feeding assembly is configured to add the test liquid and auxiliary materials that form coprecipitates with the radionuclide into the reaction vessel. The heating and stirring assembly is configured to heat and stir the test liquid and auxiliary materials, and to stabilize the liquid level in the reaction vessel. The discharging assembly is configured to receive the liquid phase and coprecipitates from the reaction vessel. The cleaning assembly is configured to clean the reaction vessel. The control components are configured to control the feeding assembly, heating and stirring assembly, discharging assembly, and cleaning assembly. This system reduces manual operation, avoids safety hazards to operators, and improves collection efficiency.

Description

Technical Field

[0001] Embodiments of this application relate to the field of materials technology, specifically to the preparation of test samples for testing or analysis by measuring the chemical or physical properties of materials, and particularly to a radionuclide collection system. Background Technology

[0002] This section provides background information relevant to this application only and does not necessarily constitute prior art.

[0003] Strontium-90 is a radioactive isotope that, once it enters water bodies, can persist for decades and is difficult to degrade naturally. Environmental monitoring requires testing water samples for Strontium-90. Before testing, the water samples need to be pretreated to obtain samples containing Strontium-90.

[0004] Currently, there are many limitations to the methods of pretreating water samples to obtain strontium-90-containing samples. Summary of the Invention

[0005] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0006] This application provides a radionuclide collection system for collecting radionuclides from a test liquid. The system includes a reaction vessel, a feeding assembly, a heating and stirring assembly, a discharging assembly, a cleaning assembly, and a control unit. The feeding assembly is configured to add the test liquid and auxiliary materials for forming a coprecipitate with the radionuclides in the test liquid to the reaction vessel. The heating and stirring assembly is configured to heat and stir the test liquid and auxiliary materials in the reaction vessel to promote their reaction and stabilize the liquid level. The discharging assembly is configured to receive the liquid phase and coprecipitate from the reaction vessel. The cleaning assembly is configured to clean the reaction vessel. The control unit is configured to control the feeding assembly, the heating and stirring assembly, the discharging assembly, and the cleaning assembly.

[0007] The embodiments of this application provide a reaction vessel to allow the test liquid and auxiliary materials to react and form a coprecipitate. A feeding assembly adds the test liquid and auxiliary materials to the reaction vessel, and a heating and stirring assembly heats and stirs them, promoting uniform mixing, accelerating the reaction, facilitating coprecipitate formation, increasing coprecipitate volume, shortening coprecipitation time, and stabilizing the liquid level to prevent large fluctuations that could lead to coprecipitate deposition on the vessel's inner wall. A discharge assembly receives the reacted liquid phase and coprecipitate, yielding a collected radionuclide sample. A cleaning assembly cleans the reaction vessel, preventing cross-contamination between different test liquids. Control components manage the feeding, heating and stirring, discharge, and cleaning assemblies, reducing manual operation, minimizing safety risks for operators, and improving collection efficiency.

[0008] These and other advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0009] To further illustrate the above and other advantages and features of this application, the specific embodiments of this application will be described in more detail below with reference to the accompanying drawings. The drawings, together with the following detailed description, are included in and form a part of this specification. Elements having the same function and structure are indicated by the same reference numerals. It should be understood that these drawings only depict typical examples of this application and should not be considered as limiting the scope of this application.

[0010] Figure 1 This is a schematic diagram of a radionuclide collection system according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a radionuclide collection system according to an embodiment of this application, showing the separation of the shell assembly and the frame. Figure 3 This is a schematic diagram of a radionuclide collection system according to an embodiment of this application, omitting the housing assembly; Figure 4 This is a schematic diagram of the structure of a radionuclide collection system according to an embodiment of this application, omitting the housing assembly, from another angle; Figure 5 This is a schematic diagram of the structure of a radionuclide collection system according to an embodiment of this application, omitting the housing assembly; Figure 6 This is a front view schematic diagram of a radionuclide collection system according to an embodiment of this application, omitting the housing assembly; Figure 7 This is a side view of a radionuclide collection system according to an embodiment of this application, omitting the housing assembly; Figure 8 This is a schematic side view of a radionuclide collection system according to an embodiment of this application, omitting the housing assembly; Figure 9 This is a schematic diagram of the assembled reaction vessel and heating and stirring assembly according to an embodiment of this application; Figure 10 This is a schematic diagram of the assembly of a pH detection component and a reaction vessel according to an embodiment of this application; Figure 11 This is an exploded view of a solid-phase feed assembly and a top partition plate according to an embodiment of this application; Figure 12 This is a schematic diagram from another angle of the solid auxiliary material container of a solid feed assembly according to an embodiment of this application.

[0011] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.

[0012] Explanation of reference numerals in the attached figures: 10. Reaction vessel; 11. Cylindrical component; 12. Conical component; 121. Liquid outlet; 122. Sediment outlet; 20. Heating and stirring assembly; 21. Heating element; 22. Temperature measuring element; 23. Stirring assembly; 231. Drive element; 232. Stirring shaft; 233. First stirring blade; 234. Second stirring blade; 24. Connecting element; 25. Mounting plate; 31. Sample feed assembly for the liquid to be tested; 311. Sample inlet valve; 3111. Sample inlet connector; 312. Sample pump; 32. Liquid phase feed assembly; 321. Carrier feeding assembly; 3211. First carrier receiving component; 3212. Second carrier receiving component; 3213. First carrier pumping component; 3214. Second carrier pumping component; 322, Acid feed assembly; 3221, Acid container; 3222, First acid pump; 3223, Second acid pump; 323. Alkali feed assembly; 3231. Alkali container; 3232. First alkali pump; 3233. Second alkali pump; 324. pH value detection component; 3241. pH value detection element; 3242. Detection container; 3243. Detection pump; 3244. Detection inlet pipeline; 3245. Detection outlet pipeline; 33. Solid-phase feed assembly; 331. Solid auxiliary material container; 3311. Container body; 33110. Container tank; 33111. Base plate; 33112. First side plate; 33114. Second side plate; 33113. Third side plate; 33115. Fourth side plate; 3312, Bottom cover; 33121, Cover body; 33122, Trigger; 332. Moving drive component; 3321. Mounting component; 3322. Slide rail; 3323. Telescopic rod; 333. Feeding assembly parts; 40. Discharge assembly; 41. Liquid collection component; 411. Drain valve; 42. Waste liquid extraction pump; 43. Level gauge; 44. Collection pump; 45. Co-precipitation collection component; 46. Rotating component; 461. Holding tank; 47. Rotation drive component; 48. Collection pipeline; 51. Nozzle; 52. Cleaning pump; 53. Cleaning connector; 54. Cleaning pipeline; 60. Exhaust assembly; 61. Inlet duct; 62. Fan; 63. Outlet duct; 70. Frame; 701. Wiring hole; 702. Ventilation clearance hole; 71. Frame body; 711. Connecting rod; 72. Top layer partition plate; 721. Clearance hole; 722. Solid feed hole; 731. First middle layer partition plate; 732. Second middle layer partition plate; 74. Bottom layer partition plate; 75. Baffle; 76. Carrier isolation mounting component; 761. Carrier receiving cavity; 77. Acid and alkali liquid isolation mounting component; 771. Acid and alkali liquid receiving cavity; 78. Liquid feed isolation mounting component; 781. Liquid connector receiving cavity; 79. Pump mounting component; 80. Shell assembly; 81. Shell body; 811. Top plate; 812. Side plate; 8121. Carrier material exchange port; 8122. Acid and alkali material exchange port; 8123. Liquid pipeline installation port; 813. Front plate; 8131. Solid material exchange port; 8132. Sampling port; 82. Back plate; 83. Moving parts. Detailed Implementation

[0013] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0014] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0015] It should be noted that, unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning as understood by a person with ordinary skills in the field to which this application pertains.

[0016] In the description of the embodiments of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0017] Currently, the entire process of water sample pretreatment is usually carried out manually, which is inefficient and poses safety hazards to operators.

[0018] To address the aforementioned issues, embodiments of this application provide a radionuclide collection system for collecting radionuclides from a liquid to be tested, thereby improving efficiency and reducing safety hazards.

[0019] See Figures 1 to 5 The radionuclide collection system provided in the embodiments of this application may include: a reaction vessel 10, a feeding assembly, a heating and stirring assembly 20, a discharging assembly 40, a cleaning assembly, and a control unit. The feeding assembly is configured to add the test liquid and auxiliary materials for forming a coprecipitate product with the radionuclide in the test liquid to the reaction vessel 10; the heating and stirring assembly 20 is configured to heat and stir the test liquid and auxiliary materials in the reaction vessel 10 to promote their reaction and stabilize the liquid level in the reaction vessel 10; the discharging assembly 40 is configured to receive the liquid phase and coprecipitate product from the reaction vessel 10; the cleaning assembly is configured to clean the reaction vessel 10; and the control unit is configured to control the feeding assembly, the heating and stirring assembly 20, the discharging assembly 40, and the cleaning assembly.

[0020] The embodiments of this application provide a reaction vessel 10 to allow the test liquid and auxiliary materials to react and form a coprecipitate. A feeding assembly adds the test liquid and auxiliary materials to the reaction vessel 10, and a heating and stirring assembly 20 heats and stirs them, promoting uniform mixing, accelerating the reaction, facilitating coprecipitate formation, increasing coprecipitate volume, shortening coprecipitation time, and stabilizing the liquid level in the reaction vessel 10 to prevent large fluctuations that could lead to coprecipitate deposition on the inner wall of the reaction vessel 10. A discharge assembly 40 receives the reacted liquid phase and coprecipitate, shortening the collection time for radionuclide samples. A cleaning assembly cleans the reaction vessel 10, preventing cross-contamination between different test liquids. Control components manage the feeding assembly, heating and stirring assembly 20, discharge assembly 40, and cleaning assembly, reducing manual operation, minimizing safety hazards for operators, and improving collection efficiency.

[0021] In some embodiments, the feeding assembly may include: a test liquid feeding assembly 31, a liquid phase feeding assembly 32, and a solid phase feeding assembly 33. The test liquid feeding assembly 31 is used to add the test liquid to the reaction vessel 10; the liquid phase feeding assembly 32 is used to sequentially add an acid, a carrier, and an alkali to the reaction vessel 10; the solid phase feeding assembly 33 is used to add a solid auxiliary material that forms a co-precipitation product with the radionuclide and the carrier to the reaction vessel 10. In the embodiments of this application, by setting the test liquid feeding assembly 31, the liquid phase feeding assembly 32, and the solid phase feeding assembly 33, the test liquid, acid, carrier, alkali, and solid auxiliary material are fed separately, which is more conducive to achieving automated feeding, reducing manual operation, and improving efficiency.

[0022] In some embodiments, the control unit controls the test liquid feeding assembly 31, the liquid phase feeding assembly 32, and the solid phase feeding assembly 33 to control the feeding process and feeding sequence of the test liquid, acid, carrier, alkali, and solid auxiliary raw materials, thereby improving efficiency.

[0023] In some embodiments, the carrier includes a non-radioactive nuclide material that is isotopic to the radioactive nuclide and a carrier that facilitates isotope coprecipitation separation. For example, when collecting strontium-90 radioactive nuclide from the test liquid, the carrier can be a non-radioactive strontium carrier and a yttrium carrier.

[0024] See Figure 7 , Figure 7This is a side view of a radionuclide collection system according to an embodiment of this application, omitting the housing assembly. In some embodiments, the liquid phase feed assembly 32 may include: a carrier feed assembly 321, an acid feed assembly 322, an alkali feed assembly 323, and a pH detection assembly 324. The carrier feed assembly 321 is used to deliver a carrier to the reaction vessel 10; the acid feed assembly 322 is used to deliver acid to the reaction vessel 10; the alkali feed assembly 323 is used to deliver alkali to the reaction vessel 10; the pH detection assembly 324 is used to detect the pH value of the liquid in the reaction vessel 10; and a control unit controls the amount of acid delivered by the acid feed assembly 322 to the reaction vessel 10 and the amount of alkali delivered by the alkali feed assembly 323 to the reaction vessel 10 based on the pH value detected by the pH detection assembly. In such an embodiment, it is advantageous to increase the feed rate of the acid and alkali while ensuring that the pH value is within a suitable range.

[0025] In some embodiments, the controller may be a PLC controller.

[0026] See Figure 4 and Figure 10 In some embodiments, the pH detection component 324 may include: a pH detection element 3241, a detection container 3242, a detection inlet line 3244, a detection outlet line 3245, and a detection pump 3243. The detection container 3242 is disposed outside the reaction container 10; the detection inlet line 3244 and the detection outlet line 3245 are both in fluid communication with the reaction container 10 and the detection container 3242. The detection pump 3243 is used to drive the liquid to circulate within the reaction container 10, the detection inlet line 3244, the detection container 3242, and the detection outlet line 3245. The pH detection element 3241 is used to detect the pH value of the liquid in the detection container 3242.

[0027] In the embodiments of this application, compared to directly setting the pH value detection device 3241 inside the reaction vessel 10, this application additionally sets a detection container 3242 outside the reaction vessel 10, and uses the detection inlet pipe 3244, the detection outlet pipe 3245 and the detection pump 3243 to realize the liquid circulation flow, which can make the components in the liquid mix more evenly. Therefore, when the pH value of the liquid in the detection container 3242 is detected by the pH value detection device 3241, the pH value of the liquid can be detected more accurately, so the control device can adjust the amount of acid and alkali solution according to the detected pH value more accurately.

[0028] In some embodiments, the inlet of the detection container 3242, which is in fluid communication with the detection inlet line 3244, is higher than its outlet, which is in fluid communication with the detection outlet line 3245. The outlet of the reaction container 10, which is in fluid communication with the detection inlet line 3244, is lower than its return port, which is in fluid communication with the detection outlet line 3245. A detection pump 3243 is disposed in the detection inlet line 3244. In this embodiment, since the detection pump 3243 is located in the detection inlet pipe 3244, the liquid in the reaction vessel 10 can only enter the detection vessel 3242 through the detection inlet pipe 3244 when the detection pump 3243 is working, which helps to ensure the stability of the liquid level in the detection vessel 3242. At the same time, after the detection pump 3243 stops working, due to the presence of the detection pump 3243, the liquid in the detection vessel 3242 will not flow back into the reaction vessel 10 through the detection inlet pipe 3244, thereby enabling the liquid level in the detection vessel 3242 to remain stable and not drop. Thus, after the detection pump 3243 stops working, the probe of the pH value detection element 3241 can remain moist, which is beneficial to the accuracy of the measurement in the next measurement.

[0029] See Figure 7 In some embodiments, the acid feed assembly 322 may include: an acid container 3221, a first acid pump 3222, and a second acid pump 3223; the acid container 3221 is used to contain acid; the first acid pump 3222 is used to pump the acid in the acid container 3221 to the reaction vessel 10 at a first flow rate; the second acid pump 3223 is used to pump the acid in the acid container 3221 to the reaction vessel 10 at a second flow rate; the second flow rate is less than the first flow rate; the control unit is configured to control the first acid pump 3222 and the second acid pump 3223 to pump acid to the reaction vessel 10 simultaneously, and control the first acid pump 3222 to be shut down first and the second acid pump 3223 to be shut down according to the pH value detected by the pH value detection assembly 324. In this embodiment, by simultaneously providing a high-flow-rate first acid pump 3222 and a low-flow-rate second acid pump 3223, acid can be pumped using both pumps simultaneously, which helps to increase the pumping speed. When the amount of acid pumped by both pumps approaches a preset value, the high-flow-rate first acid pump 3222 is shut off, and only the low-flow-rate second acid pump 3223 continues pumping. This relatively extends the pumping time after the pumping volume approaches the preset value, allowing sufficient time for the liquid in the reaction vessel 10 to mix evenly. This makes the pH value detected by the pH detection component 324 more accurate, and thus more accurately determines the shutdown time of the second acid pump 3223, resulting in more precise acid addition.

[0030] See Figure 7In some embodiments, the alkali feeding assembly 323 may include: an alkali container 3231, a first alkali pump 3232, and a second alkali pump 3233. The alkali container 3231 is used to contain alkali; the first alkali pump 3232 is used to pump the alkali in the alkali container 3231 to the reaction vessel 10 at a third flow rate; the second alkali pump 3233 is used to pump the alkali in the alkali container 3231 to the reaction vessel 10 at a fourth flow rate; the fourth flow rate is less than the third flow rate; the control unit is configured to control the first alkali pump 3232 and the second alkali pump 3233 to pump alkali to the reaction vessel 10 simultaneously, and control the first alkali pump 3232 to be shut down first, and then the second alkali pump 3233 to be shut down, based on the pH value detected by the pH value detection assembly 324.

[0031] In this embodiment, by simultaneously providing a high-flow-rate first alkali pump 3232 and a low-flow-rate second alkali pump 3233, alkali can be pumped using both pumps simultaneously, which helps to increase the pumping speed. Furthermore, when the amount of alkali pumped by both pumps approaches a preset value, the high-flow-rate first alkali pump 3232 is shut off, and only the low-flow-rate second alkali pump 3233 continues pumping. This relatively extends the pumping time after the pumping volume approaches the preset value, allowing sufficient time for the liquid in the reaction vessel 10 to mix evenly. This makes the pH value detected by the pH detection component 324 more accurate, and thus more accurately determines the shutdown time of the second alkali pump 3233, resulting in more precise alkali addition.

[0032] See Figure 7 In some embodiments, the carrier feeding assembly 321 may include: a first carrier container 3211, a second carrier container 3212, a first carrier pump 3213, and a second carrier pump 3214. The first carrier container 3211 is used to contain a first non-radioactive nuclide solution that is an isotope of the radioactive nuclide; the second carrier container 3212 is used to contain a second non-radioactive nuclide solution that facilitates isotope coprecipitation separation; the first carrier pump 3213 is used to pump the first non-radioactive nuclide solution in the first carrier container 3211 to the reaction vessel 10; and the second carrier pump 3214 is used to pump the second non-radioactive nuclide solution in the second carrier container 3212 to the reaction vessel 10. Such embodiments are advantageous for increasing the feeding rates of the first and second carriers.

[0033] In some embodiments, the control unit controls the first carrier pumping unit 3213 and the second carrier pumping unit 3214 to pump the first carrier and the second carrier into the reaction vessel 10, respectively.

[0034] In some embodiments, the first carrier pumping component 3213, the second carrier pumping component 3214, the first alkali pumping component 3232, the second alkali pumping component 3233, the first acid pumping component 3222, and the second acid pumping component 3223 can all be peristaltic pumps.

[0035] See Figure 7 and Figure 8 , Figure 8 This is another side view of a radionuclide collection system according to an embodiment of this application, omitting the housing assembly. In some embodiments, the test liquid feeding assembly 31 may include: a sample pump 312, a plurality of sample valves 311, a plurality of sample connectors 3111, and a liquid level measuring device. Each sample connector 3111 is connected to a corresponding sample valve 311 for detachable connection to the test liquid delivery pipeline. The sample pump 312 is used to communicate with any sample valve 311 to deliver each test liquid to the reaction vessel 10. The liquid level measuring device is used to measure the liquid level in the reaction vessel 10. A control device is configured to control the communication between the sample pump 312 and any sample valve 311, and to control the shutdown of the sample pump 312 based on the liquid level measured by the liquid level measuring device. Through the plurality of sample valves 311 and the plurality of sample connectors 3111, multiple test liquids can be sequentially collected for radionuclide collection.

[0036] In some embodiments, the level measuring element is disposed within the reaction vessel 10 and positioned above the coprecipitated product to prevent the coprecipitated product from depositing on the level measuring element.

[0037] In some embodiments, each test liquid can be placed in a separate sample container, and each sample container is quickly connected to a corresponding sample inlet connector 3111 via a corresponding test liquid delivery pipeline.

[0038] See Figure 11 and Figure 12 , Figure 11 This is an exploded view of a solid-phase feed assembly and a top-layer partition plate according to an embodiment of this application. Figure 12This is a schematic diagram from another angle of the solid auxiliary material container of a solid-phase feed assembly according to an embodiment of this application. In some embodiments, the solid-phase feed assembly 33 may include: a plurality of solid auxiliary material containers 331, a plurality of moving actuators 332, and a feeding coordination member 333. Each solid auxiliary material container 331 is used to contain solid auxiliary material; each moving actuator 332 is used to drive a corresponding solid auxiliary material container 331 to reciprocate in a direction approaching or away from the reaction vessel 10; the feeding coordination member 333 is configured to cooperate with the solid auxiliary material container 331 as each solid auxiliary material container 331 moves towards the reaction vessel 10, so that the solid auxiliary material container 331 adds solid auxiliary material to the reaction vessel 10; a control member is configured to control the plurality of moving actuators 332. In such an embodiment, by providing a plurality of solid auxiliary material containers 331, each solid auxiliary material container 331 can correspond to a corresponding test liquid, thereby realizing the collection of radionuclides from multiple samples. The solid auxiliary material container 331 is driven by the moving drive 332 to reciprocate in a direction approaching or moving away from the reaction vessel 10. When the solid auxiliary material container 331 moves towards the reaction vessel 10, it cooperates with the feeding assembly 333, thereby adding solid auxiliary materials into the reaction vessel 10. Conversely, when the solid auxiliary material container 331 moves away from the reaction vessel 10, it facilitates the addition of solid auxiliary materials. Therefore, by controlling the moving drive 332, the control unit can both add solid auxiliary materials to the reaction vessel 10 and facilitate the addition of solid auxiliary materials to the solid auxiliary material container 331.

[0039] In some embodiments, the solid auxiliary material can be ammonium carbonate, which provides carbonate ions to form a carbonate coprecipitate. Ammonium carbonate absorbs water and crystallizes. The solid auxiliary material container 331 can be made of polytetrafluoroethylene (PTFE) to prevent ammonium carbonate from adhering.

[0040] In some embodiments, the solid auxiliary material container 331 may include a container body 3311 and a bottom cover 3312. The container body 3311 forms a receiving groove 33110 with an opening at the top and a bottom; a moving drive member 332 is connected to the container body 3311; the bottom cover 3312 is rotatably disposed at the bottom opening of the container body 3311 for closing the bottom opening; the bottom cover 3312 is also configured to rotate in conjunction with the feeding engagement member 333 when the container body 3311 moves, thereby opening the bottom opening. In this embodiment, the receiving body 3311 forms a receiving trough 33110 with a top opening, allowing the required amount of solid auxiliary material to be added into the receiving trough 33110 through the top opening. By forming a bottom opening at the bottom of the receiving trough 33110 and providing a bottom cover 3312 rotatably disposed at the bottom opening of the receiving body 3311, the bottom opening can be closed when it is not necessary to add material to the reaction vessel 10, preventing the solid auxiliary material from leaking downward through the bottom opening. At the same time, as the receiving body 3311 moves, the bottom cover 3312 rotates in conjunction with the feeding fitting 333, allowing the bottom opening to be opened, and the solid auxiliary material inside the receiving trough 33110 falls into the reaction vessel 10 through the bottom opening. This makes it very convenient for the automated feeding of solid auxiliary material to be controlled by the control unit.

[0041] In some embodiments, the housing body 3311 may include: a base plate 33111, a first side plate 33112, a second side plate 33114, a third side plate 33113, and a fourth side plate 33115; the first side plate 33112 and the second side plate 33114 are disposed opposite to each other, and the third side plate 33113 and the fourth side plate 33115 are disposed opposite to each other; the first side plate 33112 and the second side plate 33114 are both connected to the third side plate 33113 and the fourth side plate 33115; the second side plate 33114, the third side plate 33113, and the fourth side plate 33115 are all connected to the base plate 33111, and a bottom opening is formed between the first side plate 33112 and the base plate 33111. In this embodiment, the upper ends of the first side plate 33112, the second side plate 33114, the third side plate 33113, and the fourth side plate 33115 together form a top opening, that is, the top of the receiving body 3311 is completely open, which facilitates the addition of the required amount of solid auxiliary materials into the receiving tank 33110 through the top opening; and since the second side plate 33114, the third side plate 33113, and the fourth side plate 33115 are all connected to the bottom plate 33111, a bottom opening is formed between the first side plate 33112 and the bottom plate 33111, which is beneficial for the solid auxiliary materials in the receiving tank 33110 to enter the reaction vessel 10 through the bottom opening.

[0042] In some embodiments, the bottom cover 3312 may include a cover body 33121 and a trigger 33122 connected to the cover body 33121; the trigger 33122 is rotatably connected to the bottom plate 33111 of the receiving body 3311, and as the receiving body 3311 moves toward the reaction vessel 10, the trigger 33122 abuts against the feeding fitting 333 and rotates. This structural design can both meet the need to close the bottom opening of the receiving groove 33110 and facilitate opening the bottom opening of the receiving groove 33110.

[0043] In some embodiments, the trigger 33122 is a plate perpendicular to the cover body 33121; the trigger 33122 is hinged to the base plate 33111 via a hinge. When the receiving body 3311 moves to the point where the trigger 33122 abuts against the feeding fitting 333, the receiving body 3311 continues to move, causing the trigger 33122 to flip and rotate the cover body 33121, thereby opening the bottom opening. At this time, even if the cover body 33121 does not fully expose the bottom opening, it is in an inclined state, and the solid auxiliary materials falling downward from the bottom opening can continue to slide down along the inner wall of the cover body 33121 into the reaction vessel 10.

[0044] In some embodiments, the bottom plate 33111 is an inclined surface extending downward toward the first side plate 33112, so that the solid auxiliary materials inside the receiving tank 33110 can fall entirely into the reaction vessel 10 through the bottom opening.

[0045] In some embodiments, the feeding fitting 333 is a fixedly mounted rod. The trigger 33122 of each solid auxiliary material container 331 engages with the same rod, thereby opening the bottom opening of the corresponding receiving slot 33110. The feeding fitting 333 is, for example, disposed on the top partition plate 72 mentioned below.

[0046] In some embodiments, the moving drive 332 may include: a mounting member 3321, a slide rail 3322, and a telescopic rod 3323. The mounting member 3321 is disposed above the reaction vessel 10; the slide rail 3322 is disposed on the mounting member 3321, and the solid auxiliary material container 331 is slidably engaged with the slide rail; the telescopic rod 3323 is connected to the solid auxiliary material container 331 to move the solid auxiliary material container 331 by telescoping. This structure facilitates the reciprocating movement of the solid auxiliary material container 331.

[0047] In some embodiments, the telescopic rod 3323 may be an electric telescopic rod or a cylinder, thereby facilitating the movement of the receiving body 3311.

[0048] In some embodiments, the reaction vessel 10 may be made of polytetrafluoroethylene (PTFE) to prevent the coprecipitated products and ammonium carbonate from adhering to the inner wall and being difficult to rinse. Tests have shown that the coprecipitated products and ammonium carbonate do not adhere to the inner wall of the PTFE.

[0049] See Figure 9 , Figure 9 This is a schematic diagram of the assembled reaction vessel and heating and stirring assembly according to one embodiment of this application. In some embodiments, the reaction vessel 10 may include a conical member 12 and a cylindrical member 11 connected to the upper end of the conical member 12. The conical member 12 and the cylindrical member 11 are smoothly connected. The conical member 12 forms a liquid outlet 121 and a precipitation outlet 122, which are used to supply the liquid phase and coprecipitated products, respectively. In related technologies, in order to enable the coprecipitated products to exit smoothly from the precipitation outlet 122, the entire reaction vessel 10 is a conical member, which results in a large diameter at the top of the reaction vessel 10, thereby making the overall footprint of the radionuclide collection system large. In order to reduce the diameter of the reaction vessel 10, this application sets the reaction vessel 10 to include a conical member 12 and a cylindrical member 11 connected to the upper end of the conical member 12, so that the volume of the conical member 12 can be larger than the volume of the generated coprecipitated products. This reduces the deposition of coprecipitated products on the cylindrical member 11 and significantly reduces the diameter of the reaction vessel 10. Especially when the cylindrical part 11 and the conical part 12 are made of polytetrafluoroethylene, the co-precipitated products hardly deposit on the cylindrical part 11, and the small amount of deposits can be easily washed away by the cleaning component, without affecting the sampling of the liquid to be tested this time and the sampling of the liquid to be tested next time.

[0050] In some embodiments, the cone angle of the cone member 12 can be 35°-40°. The inventors of this application have found that within this angle range, it is more conducive to the formation of coprecipitated products.

[0051] In some embodiments, a liquid outlet 121 is formed at the upper part of the conical member 12 and above the coprecipitated product; a precipitation outlet 122 is formed at the bottom of the conical member 12. In this way, the liquid phase can be discharged from the reaction vessel 10 earlier through the liquid outlet 121, shortening the collection time of the coprecipitated product.

[0052] See Figure 9In some embodiments, the heating and stirring assembly 20 may include a heating element 21, a stirring assembly 23, and a temperature measuring element 22. The heating element 21 is used to heat the materials in the reaction vessel 10; the stirring assembly 23 is used to stir the materials in the reaction vessel 10 and stabilize the liquid level; the temperature measuring element 22 is used to detect the temperature of the materials in the reaction vessel 10; and the control element is configured to control the start and stop of the heating element 21 and the stirring assembly 23, and to control the heating power of the heating element 21 and the stirring assembly 23 according to the temperature detected by the temperature measuring element 22. In such embodiments, heating the test liquid and auxiliary raw materials by the heating element 21 and stirring the materials in the reaction vessel 10 by the stirring assembly 23 promotes the reaction between the test liquid and the auxiliary raw materials, forming co-precipitated products. Since the stirring assembly 23 can also stabilize the liquid level in the reaction vessel 10, it avoids large fluctuations in the liquid level, preventing the deposition of co-precipitated products or solid auxiliary raw materials on the inner wall of the reaction vessel 10.

[0053] In some embodiments, the heating element 21 may include a polytetrafluoroethylene (PTFE) housing and a heating wire disposed within the PTFE housing. By providing a PTFE housing, the deposition of co-precipitated products is reduced.

[0054] In some embodiments, the number of heating elements 21 is two, and the two heating elements 21 are symmetrically arranged on both sides of the stirring shaft 232, so as to better promote uniform material temperature in the reaction vessel 10.

[0055] In some embodiments, the stirring assembly 23 may include: a drive member 231, a stirring shaft 232, a first stirring blade 233, and a second stirring blade 234. The drive member 231 drives the stirring shaft 232 to rotate; the first stirring blade 233 and the second stirring blade 234 are respectively disposed at different axial positions of the stirring shaft 232. The first stirring blade 233 is used to stir the material in the reaction vessel 10, and the second stirring blade 234 is used to stabilize the liquid level of the material and prevent the liquid level from swaying and fluctuating greatly. In such an embodiment, the drive member 231 is controlled by a control member to drive the stirring shaft 232 to rotate, thereby driving the first stirring blade 233 and the second stirring blade 234 to rotate. This not only achieves stirring of the material in the reaction vessel 10, but also stabilizes the liquid level of the material and prevents co-precipitated products from depositing on the inner wall of the cylindrical component 11.

[0056] In some embodiments, the shape of the second stirring blade 234 is the same as that of the first stirring blade 233, and the size of the second stirring blade 234 is smaller than that of the first stirring blade 233. When the smaller second stirring blade 234 rotates near the liquid surface, it can stabilize the liquid surface.

[0057] In some embodiments, the first stirring blade 233 is located at the lower end of the stirring shaft 232, and the second stirring blade 234 is located 1-1.5 cm below the liquid surface inside the reaction vessel 10, so as to improve the effect of stabilizing the liquid surface.

[0058] In some embodiments, the stirring shaft 232 extends downward into the lower part of the conical part 12 of the reaction vessel 10, and the first stirring blade 233 can promote the outward discharge of coprecipitate.

[0059] In some embodiments, both the first stirring blade 233 and the second stirring blade 234 may contain three blades.

[0060] The liquid level inside the reaction vessel 10 is located inside the cylindrical part 11 and above the conical part 12, while the co-precipitated product is located inside the conical part 12.

[0061] In some embodiments, the control unit is further configured to control the heating and stirring assembly 20 to stir the material in the reaction vessel 10 when the feeding assembly delivers acid or alkali to the reaction vessel 10. Stirring the material in the reaction vessel 10 by the heating and stirring assembly 20 helps to ensure uniform distribution of the acid or alkali within the reaction vessel 10, thereby improving the accuracy of the pH detection assembly 324.

[0062] In some embodiments, the discharge assembly 40 may include a liquid collection assembly and a coprecipitation collection assembly. The liquid collection assembly is used to collect the liquid phase from the reaction vessel 10; the coprecipitation collection assembly is used to collect the coprecipitated product from the reaction vessel 10. By setting up the liquid collection assembly and the coprecipitation collection assembly to collect the liquid phase and the coprecipitated product respectively, it is beneficial to shorten the collection time of the coprecipitated product.

[0063] See Figure 7 and Figure 8 In some embodiments, the liquid collection assembly may include: a liquid collection element 41, a drain pipe, a drain valve 411, a level gauge 43, and a waste liquid extraction pump 42. The liquid collection element 41 is in fluid communication with the liquid outlet 121 of the reaction vessel 10 through the drain pipe, so that the liquid above the co-precipitated product in the reaction vessel 10 can enter the liquid collection element 41 through the drain pipe; the drain valve 411 is disposed in the drain pipe and is controlled by a control unit to control the opening and closing of the drain pipe; the level gauge 43 is used to measure the liquid level in the liquid collection element 41; the waste liquid extraction pump 42 is used to transport the liquid in the liquid collection element 41 to the outside; the control unit controls the waste liquid extraction pump 42 according to the liquid level measured by the level gauge 43. In this embodiment, the liquid above the coprecipitated product in the reaction vessel 10 is discharged to the liquid collection device 41 through the drain pipe and drain valve 411, and then the waste liquid in the liquid collection device 41 is extracted by the waste liquid extraction pump 42, which helps to shorten the collection time of the coprecipitated product.

[0064] In some embodiments, the liquid collector 41 is disposed below the reaction vessel 10. The liquid in the reaction vessel 10 flows into the liquid collector 41 under gravity through the liquid outlet 121 and the drain pipe. Since the liquid in the reaction vessel 10 flows out of the liquid outlet 121 under gravity, there is no need to use a pump to force the liquid flow, avoiding the shaking of the co-precipitated products in the reaction vessel 10 caused by the vibration of the pump operation. Thus, the liquid flows into the liquid collector 41 together with the liquid phase from the liquid outlet 121 and the drain pipe.

[0065] See Figure 5 and Figure 6 In some embodiments, the coprecipitation collection assembly may include: a collection pipeline 48, a collection pump 44, multiple coprecipitation collection elements 45, a rotation drive 47, and a rotating element 46. The collection pipeline 48 is in fluid communication with the precipitation outlet 122 of the reaction vessel 10. The collection pump 44 is used to draw the coprecipitation product of the reaction vessel 10 into the collection pipeline 48. The lower end of the collection pipeline 48 is open. Each coprecipitation collection element 45 is used to collect the coprecipitation product of the corresponding test liquid. The rotation drive 47 is used to drive the rotating element 46 to rotate, thereby driving the multiple coprecipitation collection elements 45 to rotate, so that the corresponding coprecipitation collection element 45 is aligned with the lower end opening of the collection pipeline 48 and the liquid collection element 41. The control element is configured to control the liquid above the coprecipitation product in the reaction vessel 10 to enter the liquid collection element 41 through the drain pipeline, and after the coprecipitation collection element 45 is aligned with the lower end opening of the collection pipeline 48, control the collection pump 44 to draw the coprecipitation product in the reaction vessel 10 into the collection pipeline 48.

[0066] In this embodiment, by providing a collection pump 44, the coprecipitated product can be drawn into the collection pipe 48 and fall from the lower opening of the collection pipe 48. By providing a rotation drive 47 to drive the rotating component 46 to rotate, each coprecipitation collector 45 can be aligned with the lower opening of the collection pipe 48 in sequence, thereby collecting the coprecipitated product of the corresponding test liquid using the corresponding coprecipitation collector 45, and sampling multiple test liquids. The rotating component 46 can also rotate the coprecipitation collector 45 after receiving the coprecipitated product to a position that is easy to remove.

[0067] In some embodiments, the control unit is further configured to control the heating and stirring assembly 20 to stir the material in the reaction vessel 10 when the collection pump 44 of the control discharge assembly 40 draws the coprecipitated product from the reaction vessel 10 into the collection pipe 48 of the discharge assembly 40. The inventors of this application believe that if the material in the reaction vessel 10 is not stirred during the discharge of the coprecipitated product, some of the coprecipitated product will remain at the precipitation outlet 122 of the conical member 12 and cannot be discharged. The embodiments of this application, by stirring the material in the reaction vessel 10 during the discharge of the coprecipitated product, help to avoid the deposition of the coprecipitated product on the inner wall of the conical member 12.

[0068] In some embodiments, the rotating member 46 is provided with a plurality of retaining grooves 461, and each coprecipitation collector 45 is removably disposed in a corresponding retaining groove 461 so that the coprecipitation collector 45 is stably held in the rotating member 46; the coprecipitation collector 45 is configured to allow the coprecipitated product collected therein to remain, while allowing the liquid phase to drip down from the coprecipitation collector 45 into the liquid collector 41 under the action of gravity, thereby leaving only the coprecipitated product in the coprecipitation collector 45 and improving the collection efficiency of the coprecipitated product.

[0069] In some embodiments, the bottom of the tank 461 is kept open, and when the coprecipitation collector 45 is aligned with the outlet of the collection pipe 48, the coprecipitation collector 45 is also aligned with the liquid collector 41, so that the liquid phase dripping from the coprecipitation collector 45 can enter the liquid collector 41, eliminating the need for pipework.

[0070] In some embodiments, the coprecipitation collector 45 is a funnel containing a filter element that allows only liquid to pass through, thereby achieving the collection of coprecipitated products and the separation of the liquid through a simple structure. The filter element is, for example, filter paper.

[0071] See Figure 4 and Figure 9 In some embodiments, the cleaning assembly may include a nozzle 51, a cleaning line 54, and a cleaning pump 52. The nozzle 51 is connected to the cleaning line 54, the cleaning pump 52 delivers cleaning fluid to the cleaning line 54, and the nozzle 51 sprays cleaning fluid onto the reaction vessel 10 to rinse the reaction vessel 10. By cleaning the line 54 with the cleaning pump 52 and providing cleaning fluid to the nozzle 51, the inner wall of the reaction vessel 10 can be rinsed with cleaning fluid after the coprecipitated product is collected, thereby preventing residual coprecipitated product from affecting the next sample of the test liquid.

[0072] In some embodiments, the nozzle 51 is configured to rotate while spraying liquid and mainly spray liquid towards the conical member 12, which can increase the rinsing area and rinsing effect on the reaction vessel 10.

[0073] In some embodiments, the cleaning assembly may include two nozzles 51 that spray liquid while rotating, symmetrically arranged in the reaction vessel 10 relative to the heating and stirring assembly 20, so that the co-precipitated products deposited on the heating and stirring assembly 20 can also be washed away when rinsing the inner wall of the reaction vessel 10.

[0074] In some embodiments, the cleaning assembly may include a cleaning connector 53 connected to the cleaning pipeline 54, and an external pipeline for providing cleaning fluid may be detachably connected to the cleaning connector 53.

[0075] In some embodiments, the control unit is configured to first control the sample pump 312 of the feed assembly to deliver the next test liquid to the reaction vessel 10 so as to flush the reaction vessel 10 with the next test liquid, and then control the cleaning assembly to flush the reaction vessel 10.

[0076] In some embodiments, after the control cleaning assembly rinses the reaction vessel 10, the control unit controls the detection pump 3243 to start, and uses the cleaning fluid in the reaction vessel 10 to circulate and clean the probes of the detection inlet pipe 3244, the detection outlet pipe 3245, the detection container 3242, and the pH value detection device 3241.

[0077] See Figure 1 and, Figure 2 as well as Figure 6 In some embodiments, the radionuclide collection system provided in this application may further include: a frame 70, a shell assembly 80, and an exhaust assembly 60. The reaction vessel 10, feeding assembly, heating and stirring assembly 20, discharging assembly 40, and cleaning assembly are disposed within the frame 70; the shell assembly 80 is configured to enclose the frame 70 to prevent the escape of gases generated during the reaction, and is also configured to be separable from the frame 70; the exhaust assembly 60 is disposed within the frame 70 and is used to exhaust the gases generated by the reaction vessel 10 into an exhaust channel outside the shell assembly 80. By providing the frame 70, installation space and support are provided for each component; by providing the shell assembly 80, a relatively enclosed space can be formed together with the frame 70 to prevent the escape of gases generated during the reaction; by providing the exhaust assembly 60, the gases generated during the reaction can be exhausted to an external exhaust channel, preventing diffusion into the operating environment and adverse effects on operators.

[0078] In some embodiments, the housing assembly 80 may include a housing body 81, a back plate 82, and a movable member 83. The housing body 81 has a notch on one side facing the back of the frame 70 and an opening at its bottom; the back plate 82 is detachably connected to the housing body 81 at the notch; the movable member 83 is configured to move the housing body 81 horizontally relative to the frame 70 to separate it from the frame 70. The opening at the bottom of the housing body 81 facilitates the extension of electrical wires and the venting assembly 60 to the outside; and the ability to separate the housing body 81 and the back plate 82 from the frame 70 facilitates maintenance of components mounted on the frame 70.

[0079] In some embodiments, the outer casing 81 may include a top plate 811, two side plates 812, and a front plate 813. The two side plates 812 are connected to the front plate 813 on both sides, and the top plate 811 is connected to the two side plates 812 and the front plate 813 on top of them. The top plate 811 and the two side plates 812 together form a notch and an opening. The back plate 82 is detachably connected to the top plate 811 and the two side plates 812, and each side plate 812 is provided with a movable element 83. In this embodiment, the outer casing 81 and the back plate 82 are not connected to the frame 70, which facilitates the disassembly of the outer casing 81 and the back plate 82 while preventing the escape of gases generated during the reaction.

[0080] In some embodiments, the exhaust assembly 60 may include an inlet pipe 61, a fan 62, and an outlet pipe 63; the inlet of the fan 62 is in fluid communication with the inlet pipe 61, and the outlet of the fan 62 is in fluid communication with the outlet pipe 63; the control unit is configured to control the fan 62 to start, so that the gas generated by the reaction vessel 10 can enter the inlet pipe 61 and be discharged to the exhaust channel via the outlet pipe 63. By providing the inlet pipe 61, the fan 62, and the outlet pipe 63, the gas generated by the reaction can be discharged to the outside.

[0081] In some embodiments, the exhaust duct 63 extends downward from the bottom of the fan 62 and extends to the outside through the bottom opening of the housing assembly 80 at the bottom of the frame 70, so as not to affect the separation of the housing assembly 80 from the frame 70, and to lead the gas out to the external exhaust channel.

[0082] In some embodiments, the reaction vessel 10 is disposed on the upper part of the frame 70; the blower 62 is disposed in the middle of the frame 70; the air inlet of the air inlet pipe 61 is located on the upper part of the frame 70, and the lower end of the air inlet pipe 61 extends downward to be in fluid communication with the air inlet of the blower 62. Since the gas generated by the reaction has a low density, it usually flows into the top of the internal space of the housing assembly 80. By disposing the air inlet of the air inlet pipe 61 on the upper part of the frame 70, it is beneficial to extract the gas from the top of the internal space of the housing assembly 80.

[0083] In some embodiments, the frame 70 and the housing assembly 80 are further configured to prevent the escape of gases generated during the reaction when the feed assembly is being replaced and / or the coprecipitated product is being removed, thereby enabling the replacement of materials and the removal of the coprecipitated product during the reaction.

[0084] See Figures 3 to 8 In some embodiments, the frame 70 may include a frame body 71 and a carrier isolation mounting member 76. The carrier isolation mounting member 76 is disposed on the frame body 71 and forms a carrier receiving cavity 761 facing the housing assembly 80. A first carrier receiving member 3211 and a second carrier receiving member 3212 of the feeding assembly are arranged in the carrier receiving cavity 761. A carrier replacement port 8121 and a carrier replacement door are formed on the housing assembly 80 facing the carrier receiving cavity 761. The carrier replacement port 8121 is used to replace the carrier, and the carrier replacement door is used to open or close the carrier replacement port 8121.

[0085] In this embodiment, by providing the carrier isolation mounting component 76, the internal space of the housing assembly 80 can be kept relatively closed, and the first carrier receiving component 3211 and the second carrier receiving component 3212 can be arranged in the carrier receiving cavity 761 which is isolated from the internal space of the housing assembly 80. Under the premise of keeping the internal space of the housing assembly 80 relatively closed, the carrier can be replaced through the carrier replacement port 8121.

[0086] In some embodiments, the housing assembly 80 also forms a carrier exchange door for opening or closing the carrier exchange port 8121 to make the housing assembly 80 aesthetically pleasing overall.

[0087] In some embodiments, the frame 70 may further include: an acid-base isolation mounting member 77 disposed on the frame body 71, the acid-base isolation mounting member 77 forming an acid-base receiving cavity 771 facing the housing assembly 80, and an acid receiving member 3221 and an alkali receiving member 3231 of the feeding assembly arranged in the acid-base receiving cavity 771; an acid-base exchange port 8122 is formed at the position of the housing assembly 80 facing the acid-base receiving cavity 771, the acid-base exchange port being used to replace the acid and alkali.

[0088] In such an embodiment, by providing an acid-base isolation mounting component 77 and a liquid feed isolation mounting component 78, the acid container 3221 and the alkali container 3231 are arranged in an acid-base container cavity 771 that is isolated from the internal space of the housing assembly 80. Under the premise of ensuring that the internal space of the housing assembly 80 is relatively closed, the acid and alkali can be replaced through the acid-base exchange port 8122.

[0089] In some embodiments, the housing assembly 80 also forms an acid-base exchange door for opening or closing the acid-base exchange port 8122, so as to make the housing assembly 80 aesthetically pleasing overall.

[0090] In some embodiments, the frame 70 may further include: a liquid inlet isolation mounting member 78 disposed on the frame body 71; the liquid inlet isolation mounting member 78 forms a liquid connector receiving cavity 781 facing the housing assembly 80, the injection valve 311 of the inlet assembly is disposed on the side of the liquid inlet isolation mounting member 78 opposite to the housing assembly 80, and the injection connector 3111 of the inlet assembly is arranged in the liquid connector receiving cavity 781. A liquid pipeline installation port 8123 is formed at the position of the housing assembly 80 facing the liquid connector receiving cavity 781, and the liquid pipeline installation port 8123 is used for detachable connection between the liquid delivery pipeline to be tested and the injection connector 3111.

[0091] In this embodiment, by setting up a liquid inlet isolation mounting component 78 to form a liquid connector receiving cavity 781, it is possible to connect the liquid delivery pipeline to be tested and the sample inlet connector 3111 through the liquid pipeline installation port 8123 while ensuring that the internal space of the housing assembly 80 is relatively closed.

[0092] In some embodiments, the housing assembly 80 is provided with a solid feed inlet 8131 and a solid feed door for opening or closing the solid feed inlet 8131 at a position facing the solid auxiliary material container 331 of the feeding assembly, for adding solid auxiliary materials into the solid auxiliary material container 331 through the solid feed inlet 8131. In such an embodiment, when the solid auxiliary material container 331 moves away from the reaction vessel 10, the solid feed inlet 8131 can extend when the solid feed door is open, thereby facilitating the addition of materials into the solid auxiliary material container 331, and when the solid auxiliary material container 331 moves towards the reaction vessel 10, the solid feed door is closed to keep the space inside the housing assembly 80 sealed.

[0093] In some embodiments, the housing assembly 80 is provided with a sampling port 8132 and a sampling gate for opening or closing the sampling port 8132 at the position facing the coprecipitation collector 45, so that the coprecipitation collector 45 can be moved out or in through the sampling port 8132. This arrangement facilitates sampling after the coprecipitation product of the corresponding test liquid is collected in the coprecipitation collector 45, and also keeps the internal space of the housing assembly 80 closed.

[0094] In some embodiments, the frame 70 may also include a baffle 75 disposed on the outside of the rotating member 46 to prevent liquid in the co-precipitation collector 45 from spilling outward and causing contamination of other components.

[0095] In some embodiments, the baffle 75 and the rotating member 46 may be clearance-fitted so that the rotating member 46 can rotate relative to the baffle 75.

[0096] In some embodiments, the baffle 75 has a notch on the side facing the housing assembly 80 of the radionuclide collection system. When the rotating member 46 rotates so that any of its holding slots 461 are close to the notch, the coprecipitated collector 45 can be placed into or removed from the holding slot 461 through the notch, thereby facilitating sampling by the operator and improving sampling efficiency.

[0097] See Figures 3 to 8 In some embodiments, the frame 70 may further include: a top partition 72, a first middle partition 731, a second middle partition 732, and a bottom partition 74. The top partition 72, the first middle partition 731, the second middle partition 732, and the bottom partition 74 are disposed at intervals from top to bottom along the height direction on the frame body 71.

[0098] The solid-phase feed assembly 33 of the feeding assembly is disposed on the upper surface of the top partition plate 72; the reaction vessel 10 is disposed below the top partition plate 72, supported by the first middle partition plate 731, and extends downward to below the first middle partition plate 731. The top partition plate 72 closes the top opening of the reaction vessel 10, and together with the shell assembly 80, forms a closed space above the top partition plate 72. The heating and stirring assembly 20 is connected to the top of the frame body 71; the discharge assembly 40 is disposed on the bottom partition plate 74 and the second middle partition plate 732; the test liquid feed assembly 31 of the feeding assembly is disposed on the bottom partition plate 74 and the second middle partition plate 732; the liquid phase feed assembly 32 of the feeding assembly is disposed on the first middle partition plate 731 and the second middle partition plate 732; the blower 62 is disposed on the first middle partition plate 731.

[0099] In this embodiment, by placing the solid feed assembly 33 on the upper surface of the top partition plate 72 and the reaction vessel 10 below the top partition plate 72, it is convenient for the solid feed assembly 33 to pour solid auxiliary raw materials into the reaction vessel 10. The top partition plate 72 not only provides support and mounting for the solid feed assembly 33, but also seals the top of the reaction vessel 10. Furthermore, it helps to contain the gas escaping from the reaction vessel 10 within the space above the top partition plate 72, reducing gas diffusion. Connecting the heating and stirring assembly 20 to the top of the frame body 71 makes the connection of the heating and stirring assembly 20 more stable and allows it to enter the reaction vessel 10 from top to bottom. Placing the discharge assembly 40 on the bottom partition plate 74 and the second middle partition plate 732 lowers the discharge assembly 40, which helps to prevent liquid phase and co-precipitated products from remaining in the drain pipe and collection pipe 48, respectively. By setting the test liquid feed assembly 31 of the feed assembly on the bottom partition plate 74 and the second middle partition plate 732, and setting the liquid phase feed assembly 32 of the feed assembly on the first middle partition plate 731 and the second middle partition plate 732, the existing space of the frame 70 is fully and rationally utilized, making the spatial layout of the entire radionuclide collection system more compact and reasonable, and reducing the overall footprint.

[0100] In some embodiments, the mounting component 3321 is mounted on the top partition plate 72.

[0101] In some embodiments, see Figure 3 and Figure 9 A connecting rod 711 is provided at the top of the frame body 71; the heating and stirring assembly 20 may further include a connector 24 and a mounting plate 25, with a stirring shaft 232 rotatably extending downward through the mounting plate 25 into the lower part of the conical member 12 of the reaction vessel 10; the heating element 21 is connected to the mounting plate 25. The driving element 231 and the mounting plate 25 are connected to the connecting rod 711 of the frame 70 of the radionuclide collection system via the connector 24. In this embodiment, the connection between the heating and stirring assembly 20 and the frame 70 is more stable.

[0102] In some embodiments, the top partition 72, the first middle partition 731, the second middle partition 732, and the bottom partition 74 are each provided with exhaust clearance holes 702. The exhaust pipe 63 passes sequentially through the exhaust clearance holes 702 of the bottom partition 74, the first middle partition 731, and the second middle partition 732, and connects to the air outlet of the fan 62. The air inlet pipe 61 extends upward from the air outlet of the fan 62 to communicate with the exhaust clearance hole 702 of the top partition 72. By providing exhaust clearance holes 702 on each partition, the exhaust pipe 63 and the air inlet pipe 61 are limited. In some embodiments, the exhaust clearance holes 702 are formed at the corners of each partition, thereby making reasonable use of the corner space of the frame 70.

[0103] In some embodiments, the exhaust clearance holes 702 of the top partition plate 72, the first middle partition plate 731, the second middle partition plate 732, and the bottom partition plate 74 are projected onto the horizontal plane so that the exhaust pipe 63 and the inlet pipe 61 both extend in the vertical direction, reducing the space occupied.

[0104] In some embodiments, the top partition 72, the first middle partition 731, the second middle partition 732, and the bottom partition 74 are each provided with a wire-passing hole 701. The power cords of each electrical device extend downward through the wire-passing hole 701 and extend to the outside through the bottom opening of the housing assembly 80 at the bottom of the frame 70. By providing wire-passing holes 701 in each partition, the power cords of each electrical device can first pass through the wire-passing hole 701 of its own layer and then extend downward to the wire-passing holes 701 of the layers below, and be led outward from the bottom of the frame 70. This allows the wire-passing holes 701 to limit the power cords of each electrical device and prevent the power cords from becoming tangled.

[0105] In some embodiments, the first carrier container 3211, the second carrier container 3212, the first carrier pump 3213, the second carrier pump 3214, the first acid pump 3222, the second acid pump 3223, the first alkali pump 3232, the second alkali pump 3233, and the pH detection component 324 of the liquid phase feed assembly 32 are disposed on the upper surface of the first intermediate layer partition plate 731. In this embodiment, the above arrangement can make fuller and more reasonable use of the remaining space of the first intermediate layer partition plate 731 after the reaction vessel 10 is arranged in the frame 70.

[0106] In some embodiments, the first carrier pumping component 3213 and the second carrier pumping component 3214 are arranged side by side, the first acid pumping component 3222 and the second acid pumping component 3223 are arranged side by side, and the first alkali pumping component 3232 and the second alkali pumping component 3233 are arranged side by side. The two carrier pumping components, the two acid pumping components, and the two alkali pumping components are stacked on the same side of the first intermediate partition plate 731 and close to the corner of the first intermediate partition plate 731. This arrangement not only makes reasonable use of space, but also facilitates the maintenance and replacement of each carrier pumping component, acid pumping component, and alkali pumping component.

[0107] In some embodiments, each carrier container is disposed facing one side of the first intermediate layer partition plate 731, and the pH detection component 324 is disposed facing the other side of the first intermediate layer partition plate 731, so as to facilitate the maintenance and replacement of the pH detection component 324, as well as the replacement or feeding of the carrier container.

[0108] In some embodiments, the acid container 3221 of the acid feed assembly 322 and the alkali container 3231 of the alkali feed assembly 323, the sample pump 312 of the test liquid feed assembly 31, the collection pump 44 of the discharge assembly 40, the drain valve 411, and the cleaning pump 52 of the cleaning assembly are disposed on the upper surface of the second intermediate partition plate 732. In this embodiment, the above arrangement can make fuller and more reasonable use of the remaining space above the second intermediate partition plate 732 after the frame 70 is arranged with the reaction vessel 10.

[0109] In some embodiments, the drain valve 411 is located at one corner of the second intermediate layer partition plate 732, and the acid container 3221 and the alkali container 3231 are arranged side by side facing one side of the second intermediate layer partition plate 732; the sample pump 312 and the collection pump 44 are arranged side by side facing the other side of the second intermediate layer partition plate 732; and the cleaning pump 52 is arranged facing another side of the second intermediate layer partition plate 732. This arrangement not only makes reasonable use of space, but also facilitates the maintenance and replacement of each pump and the drain valve 411, as well as the replacement or addition of the acid container 3221 and the alkali container 3231.

[0110] In some embodiments, the co-precipitation collector 45 and rotating member 46 of the discharge assembly 40, and the injection valve 311 and injection connector 3111 of the liquid to be tested feeding assembly 31 are disposed on the upper surface of the bottom partition plate 74; the waste liquid extraction pump 42, liquid collector 41, rotating drive member 47, and blower 62 of the discharge assembly 40 are disposed on the lower surface of the bottom partition plate 74. The above arrangement can make fuller and more reasonable use of the space of the frame 70 located below the second middle partition plate 732, and the liquid in the reaction vessel 10 can flow into the liquid collector 41 under the action of gravity through the liquid outlet 121 and the drain pipe.

[0111] In some embodiments, see Figure 1 and Figure 2 The side plate 812 is provided with a carrier exchange port 8121, an acid-base exchange port 8122, and a liquid pipeline installation port 8123 at the positions facing the carrier receiving cavity 761, the acid-base receiving cavity 771, and the liquid connector receiving cavity 781, respectively.

[0112] In some embodiments, the cleaning connector 53 is also arranged in the liquid connector receiving cavity 781.

[0113] In some embodiments, the drain valve 411 is disposed on the side wall of the acid-base liquid isolation mounting component 77, which makes reasonable use of space and facilitates the maintenance and disassembly of the drain valve 411.

[0114] In some embodiments, the front plate 813 is provided with a solid material exchange port 8131 and a solid material exchange door at the position of the solid auxiliary material container 331 facing the solid feed assembly 33.

[0115] In some embodiments, a sampling port 8132 and a sampling gate are provided on the front panel 813 facing the coprecipitation collector 45.

[0116] In some embodiments, the baffle 75 is detachably mounted on the second intermediate layer partition 732, extending downward from the lower surface of the second intermediate layer partition 732 to a position below the rotating member 46. When the baffle 75 is provided, the baffle 75, together with the rotating member 46 and the second intermediate layer partition 732, can form a relatively enclosed space, which helps to reduce gas leakage even when the sampling port 8132 is opened.

[0117] In some embodiments, the radionuclide collection system provided in this application may further include: a pump mounting component 79 disposed on the first intermediate layer partition plate 731 and located on one side of the carrier isolation mounting component 76; a first carrier pumping component 3213, a second carrier pumping component 3214, a first acid pumping component 3222, a second acid pumping component 3223, a first alkali pumping component 3232, and a second alkali pumping component 3233 are mounted on the pump mounting component 79, thereby saving space and facilitating the maintenance and replacement of each pumping component.

[0118] In some embodiments, the top partition plate 72 forms a clearance hole 721 for the heating and stirring assembly 20 to enter the reaction vessel 10 and a solid feed hole 722 for the solid feed assembly 33 to add solid auxiliary materials to the reaction vessel 10, thereby ensuring that the heating and stirring assembly 20 and the solid auxiliary materials can enter the reaction vessel 10. Because the top partition plate 72 forms the clearance hole 721 and the solid feed hole 722, gas in the reaction vessel 10 can enter the space above the top partition plate 72 through the clearance hole 721 and the solid feed hole 722, and then be drawn away by the fan 62.

[0119] In some embodiments, there is a gap between the top partition plate 72 and the top of the frame body 71, and the space between the top partition plate 72 and the top of the frame body 71 is used to install the solid feed assembly 33 and the heating and stirring assembly 20. In such an embodiment, since the reaction vessel 10 is located below the top partition plate 72, the solid feed assembly 33 is installed on the upper surface of the top partition plate 72, occupying the space between the top partition plate 72 and the top of the frame body 71. At the same time, the heating and stirring assembly 20 is disposed on the top of the frame body 71 and extends downward from the top of the frame body 71 through the top partition plate 72 into the reaction vessel 10, which can make full and reasonable use of the space above the reaction vessel 10.

[0120] In some embodiments, a gap exists between the bottom partition plate 74 and the bottom of the frame body 71. The space between the bottom partition plate 74 and the bottom of the frame body 71 is used to install the liquid collection component 41, the waste liquid extraction pump 42, and the rotation drive component 47. The top of the liquid collection component 41 is open, and the bottom partition plate 74 forms an opening for the liquid phase dripping downwards from the co-precipitation collection component 45 to enter the liquid collection component 41 below. In such an embodiment, the space at the bottom of the frame 70 can be fully utilized.

[0121] In some embodiments, the frame 70 may further include: leveling feet, disposed at the bottom of the four corners of the frame body 71, for supporting the frame body 71, and for adjusting the levelness of the frame body 71, so that each partition of the frame body 71 is in a horizontal direction, so as to better support each component.

[0122] In some embodiments, the liquid to be tested is a water sample.

[0123] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0124] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A radionuclide collection system for collecting radionuclides from a liquid to be tested, characterized in that, include: Reaction vessel; The feeding assembly is configured to add the test liquid and auxiliary materials for forming coprecipitation products with the radionuclides in the test liquid to the reaction vessel; The heating and stirring assembly is configured to heat and stir the test liquid and auxiliary raw materials in the reaction vessel to promote the reaction and stabilize the liquid level in the reaction vessel. The discharge assembly is configured to receive the liquid phase and coprecipitated products from the reaction vessel; A cleaning assembly is configured to clean the reaction vessel; The control unit is configured to control the feeding assembly, the heating and stirring assembly, the discharging assembly, and the cleaning assembly.

2. The collection system according to claim 1, characterized in that, Also includes: The frame, the reaction vessel, the feeding assembly, the heating and stirring assembly, and the discharging assembly are disposed within the frame; The housing assembly is configured to enclose the frame to prevent the escape of gases produced in the reaction, and is configured to be separable from the frame; An exhaust assembly, disposed on the frame, is used to exhaust the gas produced by the reaction into an exhaust channel outside the housing assembly; The frame and the housing assembly are also configured to prevent the escape of gases generated during the reaction when the feed assembly is used to change materials and / or the coprecipitated product is removed.

3. The collection system according to claim 2, characterized in that, The framework includes: The main framework; A carrier isolation mounting component is disposed on the frame body, the carrier isolation mounting component forms a carrier receiving cavity facing the housing assembly, and the first carrier receiving component and the second carrier receiving component of the feeding assembly are arranged in the carrier receiving cavity; The housing assembly has a carrier replacement port at the position facing the carrier receiving cavity, and the carrier replacement port is used to replace the carrier.

4. The collection system according to claim 3, characterized in that, The framework also includes: An acid-base solution isolation mounting component is disposed on the frame body, the acid-base solution isolation mounting component forms an acid-base solution receiving cavity facing the housing assembly, and the acid solution receiving component and the alkali solution receiving component of the feeding assembly are arranged in the acid-base solution receiving cavity; The housing assembly facing the acid and alkali solution receiving cavity forms an acid and alkali exchange port, which is used to replace the acid and alkali solutions.

5. The collection system according to claim 3, characterized in that, The framework also includes: A liquid feed isolation mounting component is disposed on the frame body; the liquid feed isolation mounting component forms a liquid connector receiving cavity facing the housing assembly, the injection valve of the feed assembly is disposed on the side of the liquid feed isolation mounting component facing away from the housing assembly, and the injection connector of the feed assembly is arranged in the liquid connector receiving cavity; The housing assembly has a liquid pipeline mounting port at the position facing the liquid connector receiving cavity. The liquid pipeline mounting port is used for detachable connection between the liquid delivery pipeline to be tested and the sample inlet connector.

6. The collection system according to claim 3, characterized in that, The housing assembly is provided with a solid material exchange port and a solid material exchange door for opening or closing the solid material exchange port at the position of the solid auxiliary material container facing the feeding assembly, for adding solid auxiliary materials into the solid auxiliary material container through the solid material exchange port.

7. The collection system according to claim 3, characterized in that, The housing assembly is provided with a sampling port and a sampling door for opening or closing the sampling port at the position of the coprecipitation collector facing the discharge assembly, for moving the coprecipitation collector out or in through the sampling port.

8. The system according to claim 1, characterized in that, The control unit is also configured to control the heating and stirring unit to stir the materials in the reaction vessel when the feeding assembly delivers acid or alkali to the reaction vessel.

9. The collection system according to claim 1, characterized in that, The reaction vessel is made of polytetrafluoroethylene.

10. The collection system according to claim 1, characterized in that, The control unit is further configured to control the heating and stirring unit to stir the material in the reaction vessel when controlling the collection pump of the discharge component to draw the co-precipitated product of the reaction vessel into the collection pipeline of the discharge component.

11. The collection system according to any one of claims 1-10, characterized in that, The cleaning assembly includes: Nozzles, cleaning lines, and cleaning pumps; The nozzle is connected to the cleaning pipeline, the cleaning pump delivers cleaning fluid to the cleaning pipeline, and the nozzle sprays the cleaning fluid onto the reaction vessel to rinse the reaction vessel.

12. The collection system according to claim 11, characterized in that, The cleaning assembly includes two nozzles that spray liquid while rotating, and are symmetrically arranged inside the reaction vessel relative to the heating and stirring assembly.

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