Ammonia nitrogen distillation module and automated water quality detection and analysis system
By designing an automated ammonia nitrogen distillation module, which utilizes intermittent heating and pulsed perturbation, the problem of long distillation time in existing technologies has been solved, achieving full automation and high-efficiency distillation of ammonia nitrogen.
Patent Information
- Application Number
- CN202611382652.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-08
- Publication Date
- 2026-11-06
AI Technical Summary
Existing ammonia nitrogen distillation operations are time-consuming and rely on manual operation, making it difficult to meet the high-throughput pretreatment requirements for automated ammonia nitrogen detection.
Design an ammonia nitrogen distillation module, including a heating container, a diaphragm pump, a heating element, a distillation flask, and a receiving flask. Heated air is introduced intermittently, and ammonia gas is promoted to escape by pulsed disturbance. Combined with automatic liquid inlet and liquid extraction pipes, the entire distillation process is automated.
It significantly shortens distillation time, improves distillation efficiency, meets the high-throughput pretreatment requirements for automated ammonia nitrogen detection, and enables rapid emptying of the distillation flask.
Smart Images
Figure CN123045813A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of water quality testing, and in particular to an ammonia nitrogen distillation module and an automated water quality testing and analysis system. Background Technology
[0002] In water quality testing, environmental monitoring, and laboratory analysis, rapid and accurate component analysis of sample solutions is of great significance. Ammonia nitrogen, as a key indicator of water quality assessment, is widely determined using standard methods such as Nessler's reagent spectrophotometry and salicylic acid-hypochlorite spectrophotometry. In these methods, sample pretreatment requires distillation to separate ammonia nitrogen from the sample solution as ammonia gas and transfer it to an absorption liquid for subsequent quantitative determination. Currently, ammonia nitrogen distillation is typically performed manually: sample solution is added to the distillation flask, the heating device is started for distillation, and heating is manually stopped and the sample transferred once the distilled solution reaches a predetermined volume. However, this distillation process is time-consuming and entirely reliant on manual operation, resulting in long single distillation cycles and low throughput, which is difficult to match the automated pretreatment requirements for ammonia nitrogen detection. Summary of the Invention
[0003] In view of this, it is necessary to provide an ammonia nitrogen distillation module and an automated water quality detection and analysis system that can solve the above-mentioned technical problems.
[0004] To solve the above-mentioned technical problems, this application provides the following technical solution:
[0005] An ammonia nitrogen distillation module, the ammonia nitrogen distillation module comprising:
[0006] A heating container, wherein a sealed chamber is formed inside the heating container, and an air inlet pipe and an air outlet pipe are respectively connected to the sealed chamber.
[0007] A diaphragm pump, which is connected to the air inlet pipe and is configured to pump air into the sealed chamber intermittently;
[0008] A heating element, which is housed within the sealed cavity, is used to heat the air within the sealed cavity;
[0009] A distillation flask, at least partially disposed within the sealed chamber and capable of being heated by the heating element; the distillation flask is connected to an inlet pipe, an evaporation pipe, a suction pipe, and an air inlet pipe; the inlet pipe is used to automatically inject a preset volume of sample solution into the distillation flask; the suction pipe is capable of automatically extracting the distilled sample solution from the distillation flask; the air inlet pipe is connected to the air outlet pipe and extends to the bottom of the distillation flask to introduce heated air into the distillation flask.
[0010] A receiving bottle is provided corresponding to the distillation flask and connected to the evaporation tube on the corresponding distillation flask, and a condenser is provided on the passage connecting the receiving bottle and the evaporation tube.
[0011] In one embodiment, a flow divider is connected and communicated with the air inlet pipe, and the flow divider is placed flat on the bottom of the distillation flask;
[0012] The diverter has multiple diverting holes, which are distributed at intervals along the circumferential direction of the diverter.
[0013] In one embodiment, a receiving cavity is formed between the diverter and the bottle bottom, and the diameter of the receiving cavity gradually decreases as it moves away from the bottle bottom;
[0014] The air intake pipe and the plurality of diversion holes are respectively connected to the accommodating cavity.
[0015] In one embodiment, the heating element includes a plurality of heating plates, which are distributed sequentially and at intervals along the length of the heating container within the sealed cavity;
[0016] An air intake channel is formed between the plurality of heating plates and the inner wall of the heating container. The air introduced by the air inlet pipe flows through the air intake channel and is discharged through the air outlet pipe.
[0017] In one embodiment, the air inlet pipe and the air outlet pipe are disposed on two opposite sides of the heating container along its length.
[0018] In one embodiment, the number of distillation flasks is set to three, and the three distillation flasks are arranged sequentially at intervals along the length of the heating container.
[0019] In one embodiment, the ammonia nitrogen distillation module further includes a housing, and the heating container is housed inside the housing;
[0020] The casing is equipped with an interface assembly, which is connected to the inlet pipe and the outlet pipe via connecting hoses. Each connecting hose is equipped with a peristaltic pump, which controls the flow rate of the corresponding connecting hose.
[0021] In one embodiment, the ammonia nitrogen distillation module further includes a suction tube connected to the receiving bottle for actively drawing sample solution from the receiving bottle.
[0022] This application also claims protection for an automated water quality testing and analysis system, including the ammonia nitrogen distillation module described above.
[0023] Due to the application of the above solution, this application has the following advantages compared with the prior art:
[0024] The ammonia nitrogen distillation module and automated water quality testing and analysis system provided in this application, through the aforementioned structural design, allow the sample solution introduced into the distillation flask via the inlet pipe to volatilize under the heating effect of the heating element, releasing ammonia gas. During this process, the air inlet pipe intermittently introduces heated air into the distillation flask, creating pulsed disturbances to the sample solution. This not only effectively avoids boiling overheating and ensures a stable and reliable distillation process but also promotes the rapid escape of ammonia gas from the liquid phase to the gas phase, significantly shortening the distillation time and improving distillation efficiency. Thus, this ammonia nitrogen distillation module can achieve full automation of the ammonia nitrogen distillation process in the sample solution, perfectly matching the high-throughput pretreatment requirements of automated ammonia nitrogen detection. Simultaneously, the liquid extraction pipe automatically extracts the residual liquid from the distillation flask after distillation, achieving rapid emptying of the flask to meet the needs of continuous distillation operations. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the ammonia nitrogen distillation module provided in this application.
[0027] Figure 2 This is a schematic diagram of the ammonia nitrogen distillation module provided in this application.
[0028] Figure 3 This is a schematic diagram of the heating element and distillation flask of this application installed in a heating container.
[0029] Figure 4 This is a schematic diagram showing the extension of the inlet and outlet pipes to the bottom of the distillation flask during the application process.
[0030] Figure 5 This is a schematic diagram of the automated water quality testing and analysis system provided in this application.
[0031] Explanation of reference numerals in the attached drawings: 100, Ammonia nitrogen distillation module; 10, Heating container; 11, Sealed chamber; 111, Air inlet channel; 12, Air inlet pipe; 13, Air outlet pipe; 20, Diaphragm pump; 30, Heating element; 31, Heating plate; 40, Distillation flask; 401, Flask bottom; 410, Receptacle; 41, Liquid inlet pipe; 42, Evaporation pipe; 43, Liquid extraction pipe; 44, Air inlet pipe; 441, Flow divider; 4411, Flow divider orifice; 50, Receiving bottle; 51, Condenser; 60, Housing; 61, Interface assembly; 70, Suction pipe; 101, Peristaltic pump. Detailed Implementation
[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.
[0034] In this application, unless otherwise expressly 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 and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates 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 indicates that the first feature is at a lower horizontal level than the second feature.
[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.
[0036] Please see Figures 1 to 4 An embodiment of this application provides an ammonia nitrogen distillation module 100, including a heating container 10, a diaphragm pump 20, a heating element 30, a distillation flask 40, and a receiving flask 50. The heating container 10 has a sealed chamber 11 inside, and is provided with an air inlet pipe 12 and an air outlet pipe 13 respectively communicating with the sealed chamber 11. The diaphragm pump 20 is connected to the air inlet pipe 12 and is configured to intermittently pump air into the sealed chamber 11. The heating element 30 is housed within the sealed chamber 11 and is used to heat the air within the sealed chamber 11. The distillation flask 40 is at least partially disposed within the sealed chamber 11 and... It can be heated by the heating element 30; the distillation flask 40 is equipped with an inlet pipe 41, an evaporation tube 42, a suction pipe 43, and an air inlet pipe 44. The inlet pipe 41 is used to automatically inject a preset volume of sample solution into the distillation flask 40, the suction pipe 43 can automatically extract the distilled sample solution from the distillation flask 40, and the air inlet pipe 44 is connected to the air outlet pipe 13 and extends to the bottom 401 of the distillation flask 40 to introduce heated air into the distillation flask 40; the receiving bottle 50 is correspondingly arranged with the distillation flask 40 and is connected to the corresponding evaporation tube 42 on the distillation flask 40, and a condenser 51 is provided on the passage connecting the receiving bottle 50 and the evaporation tube 42. It should be noted that the condenser 51 can be configured as a water-cooled pipe sleeved on the outside of the pipe connecting the receiving bottle 50 and the evaporation tube 42. The water-cooled pipe is used to supply cooling water and, through heat exchange between the cooling water and the gas in the pipe, condenses the ammonia and water vapor flowing from the evaporator 42 to the receiving bottle 50, converting them into liquid distillate.
[0037] As can be seen from the above, when the ammonia nitrogen distillation module 100 of this embodiment is working, the inlet pipe 41 can automatically inject the sample solution into the distillation flask 40, and the heating element 30 heats the distillation flask 40 to make the sample solution evaporate and release the ammonia gas. During this process, the air inlet pipe 44 can intermittently introduce heated air into the distillation flask 40, forming a pulsed disturbance to the sample solution. This not only effectively avoids the boiling phenomenon caused by local overheating and ensures the stability and reliability of the distillation process, but also promotes the rapid escape of ammonia gas from the liquid phase to the gas phase, thereby significantly shortening the single distillation time and improving the distillation efficiency. In this way, the ammonia nitrogen distillation module 100 can realize the full automation of the ammonia nitrogen distillation process in the sample solution, which is well matched with the high-throughput pretreatment requirements of automated ammonia nitrogen detection. In addition, the liquid extraction pipe 43 can automatically extract the residual liquid in the distillation flask 40 after distillation, realizing the rapid emptying of the distillation flask 40 to meet the needs of continuous distillation operations.
[0038] In one embodiment, the air inlet pipe 12 and the air outlet pipe 13 are disposed on two opposite sides of the heating container 10, and the air introduced by the air inlet pipe 12 is heated by the heating element 30 before flowing to the air outlet pipe 13, so that the air flowing from the air outlet pipe 13 to the air inlet pipe 44 on the distillation flask 40 can be fully heated.
[0039] Please see Figure 2 , Figure 3 In one embodiment, the heating element 30 includes a plurality of heating plates 31, which are sequentially and spaced apart within the sealed chamber 11 along the length of the heating container 10. An air inlet channel 111 is formed between the heating plates 31 and the inner wall of the heating container 10. Air introduced through the air inlet pipe 12 flows through the air inlet channel 111 and is discharged through the air outlet pipe 13. This increases the contact area between the air introduced through the air inlet pipe 12 and the heating element 30 as it passes through, and prolongs the contact time, thereby ensuring that the gas introduced through the air inlet pipe 12 can be sufficiently heated.
[0040] Please see Figure 2 , Figure 3 In one embodiment, the number of distillation flasks 40 is set to three, and the three distillation flasks 40 are arranged sequentially and spaced apart along the length of the heating container 10, so that the ammonia nitrogen distillation module 100 can distill three sample solutions simultaneously in one operation, thereby further improving the distillation efficiency of the ammonia nitrogen distillation module 100 during operation. Of course, it is not limited to this, and those skilled in the art can also set the number of distillation flasks 40 to two, four, or even more, which will not be elaborated here.
[0041] It should be noted that each distillation flask 40 is inserted into the heating container 10, and the portion of the distillation flask 40 located in the sealed chamber 11 (i.e., its bottom area 401) is in direct contact with the hot air in the sealed chamber 11 to receive heat from the heating element 30. A sealing ring (not shown) is provided between the distillation flask 40 and the heating container 10 to achieve a sealed assembly connection between the two.
[0042] Please see Figure 1In one embodiment, the ammonia nitrogen distillation module 100 further includes a housing 60, with the heating container 10 housed inside the housing 60. An interface component 61 is mounted on the housing 60, and the interface component 61 is connected to the inlet pipe 41 and the extraction pipe 43 via connecting hoses (not shown). Each connecting hose is equipped with a peristaltic pump 101, which controls the flow rate of the corresponding connecting hose. In other words, the ammonia nitrogen distillation module 100 of this embodiment can be connected to an external pipeline via the interface component 61, and the corresponding peristaltic pump 101 can draw the external sample solution into the distillation flask 40. After distillation, the remaining liquid in the distillation flask 40 is discharged through the corresponding peristaltic pump 101, thereby emptying the distillation flask 40. During this process, taking advantage of the inherent shut-off characteristic of the peristaltic pump 101, when the inlet pipe 41 and the extraction pipe 43 are not delivering sample solution, their corresponding connecting hoses can be automatically shut off and sealed by the peristaltic pump 101, thereby meeting the airtightness requirements of the distillation flask 40 during the ammonia distillation process.
[0043] Please see Figure 4 In one embodiment, a flow divider 441 is connected and communicated with the air inlet pipe 44, and the flow divider 441 is placed flat on the bottom 401 of the distillation flask 40. The flow divider 441 has multiple flow divider holes 4411, which are distributed sequentially at intervals along the circumferential direction of the flow divider 441. Thus, the flow divider 441 can divert the air introduced by the air inlet pipe 44 to diffuse in all directions, thereby further promoting the rapid escape of ammonia from the liquid phase to the gas phase, further shortening the single distillation time and improving distillation efficiency. It should be noted that the liquid extraction pipe 43 can also extend to the bottom 401 of the distillation flask 40 to ensure that the distillation flask 40 can be evacuated after distillation. Therefore, the flow divider 441 needs to be positioned to avoid the liquid extraction pipe 43; specifically, the portion of the liquid extraction pipe 43 that abuts against the bottom 401 is located on the outside of the flow divider 441.
[0044] In this embodiment, a receiving cavity 410 is formed between the flow divider 441 and the bottle bottom 401, and the diameter of the receiving cavity 410 gradually decreases as it moves away from the bottle bottom 401. The air inlet pipe 44 and a plurality of flow divider holes 4411 are respectively connected to the receiving cavity 410, so that the air inlet pipe 44 can first introduce air into the receiving cavity 410, and then discharge it from the receiving cavity 410 to each flow divider hole 4411.
[0045] Please see Figure 2 In one embodiment, the ammonia nitrogen distillation module 100 further includes a suction tube 70, which is connected to the receiving bottle 50 and is used to actively draw sample solution from the receiving bottle 50. Specifically, a peristaltic pump 101 can be installed on the suction tube 70 to control the automatic discharge of sample solution from the receiving bottle 50.
[0046] Please see Figure 5 This application also provides an automated water quality testing and analysis system, including the ammonia nitrogen distillation module 100 described above.
[0047] 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.
[0048] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.
Claims
1. An ammonia nitrogen distillation module, characterized in that, The ammonia nitrogen distillation module (100) includes: A heating container (10) has a sealed chamber (11) inside, and the heating container (10) is provided with an air inlet pipe (12) and an air outlet pipe (13) respectively communicating with the sealed chamber (11). A diaphragm pump (20) is connected to the air inlet pipe (12) and is configured to pump air into the sealed chamber (11) intermittently. A heating element (30) is housed within the sealed chamber (11) and is used to heat the air within the sealed chamber (11). A distillation flask (40) is at least partially disposed within the sealed chamber (11) and can be heated by the heating element (30). The distillation flask (40) is connected to a liquid inlet pipe (41), an evaporation pipe (42), a liquid extraction pipe (43), and an air inlet pipe (44). The liquid inlet pipe (41) is used to automatically inject a preset volume of sample solution into the distillation flask (40). The liquid extraction pipe (43) can automatically extract the distilled sample solution from the distillation flask (40). The air inlet pipe (44) is connected to the air outlet pipe (13) and extends to the bottom (401) of the distillation flask (40) to introduce heated air into the distillation flask (40). A receiving bottle (50) is provided corresponding to the distillation flask (40) and is connected to the evaporation tube (42) on the corresponding distillation flask (40). A condenser (51) is provided on the passage connecting the receiving bottle (50) and the evaporation tube (42).
2. The ammonia nitrogen distillation module according to claim 1, characterized in that, A flow divider (441) is connected and communicated on the air inlet pipe (44), and the flow divider (441) is placed flat on the bottom (401) of the distillation flask (40); The diverter (441) has multiple diverter holes (4411), which are distributed sequentially at intervals along the circumferential direction of the diverter (441).
3. The ammonia nitrogen distillation module according to claim 2, characterized in that, The flow divider (441) and the bottle bottom (401) enclose a receiving cavity (410), the diameter of the receiving cavity (410) gradually decreasing as it moves away from the bottle bottom (401); The air intake pipe (44) and the plurality of diversion holes (4411) are respectively connected to the accommodating cavity (410).
4. The ammonia nitrogen distillation module according to claim 1, characterized in that, The heating element (30) includes a plurality of heating plates (31), which are distributed sequentially and at intervals along the length of the heating container (10) in the sealed chamber (11); An air intake channel (111) is formed between the plurality of heating plates (31) and the inner wall of the heating container (10). The air introduced by the air inlet pipe (12) flows through the air intake channel (111) and is discharged through the air outlet pipe (13).
5. The ammonia nitrogen distillation module according to claim 4, characterized in that, The air inlet pipe (12) and the air outlet pipe (13) are located on opposite sides of the heating container (10) along its length.
6. The ammonia nitrogen distillation module according to claim 1, characterized in that, The number of distillation flasks (40) is set to three, and the three distillation flasks (40) are arranged sequentially at intervals along the length of the heating container (10).
7. The ammonia nitrogen distillation module according to claim 1, characterized in that, The ammonia nitrogen distillation module (100) also includes a housing (60), and the heating container (10) is housed inside the housing (60); The casing (60) is equipped with an interface assembly (61), which is connected to the inlet pipe (41) and the extraction pipe (43) respectively via connecting hoses. Each connecting hose is equipped with a peristaltic pump (101), which is used to control the flow rate of the corresponding connecting hose.
8. The ammonia nitrogen distillation module according to claim 1, characterized in that, The ammonia nitrogen distillation module (100) also includes a suction tube (70), which is connected to the receiving bottle (50) and is used to actively draw sample solution from the receiving bottle (50).
9. An automated water quality testing and analysis system, characterized in that, Includes the ammonia nitrogen distillation module (100) as described in any one of claims 1 to 8.