An apparatus for detecting ammonia absorption experiment

Abstract

The utility model discloses a kind of detection ammonia absorption experimental device, it is related to ammonia absorption technical field, including base, base top is fixed with support rod, support rod one side is fixed with fixture, fixture is equipped with test tube. The utility model provides in structural stability and convenience, device is fixed by the cooperation of base, support rod and fixture, test tube is stably fixed, connection is firm between each component, reduce the risk of displacement or drop due to collision in experimental process, ensure the smooth progress of experiment. At the same time, the trouble of additional pipeline construction is reduced by integrated structural design, easy to operate, it is convenient to quickly assemble and disassemble, especially suitable for quickly carrying out experimental operation in teaching experiment.

Description

Technical Field

[0001] This utility model relates to the field of ammonia absorption technology, specifically to an experimental device for detecting ammonia absorption. Background Technology

[0002] There are many problems that urgently need to be solved in the practical application of current ammonia absorption experimental devices.

[0003] Traditional experimental setups often use a single absorption container for ammonia absorption detection, making it difficult to simultaneously compare and analyze the absorption effects of different absorbent materials. This results in low experimental efficiency and fails to visually demonstrate the differences in absorption performance between materials. Regarding sealing, existing setups frequently experience ammonia leaks due to poor sealing at connection points. Ammonia has a strong, irritating odor, and leaks not only affect the health of experimental personnel but also contaminate the experimental environment, leading to inaccurate ammonia concentration measurements and affecting the reliability of experimental results. Furthermore, traditional setups are often fragmented, with weak connections between components, making them prone to displacement or detachment during experiments due to minor impacts. This not only interferes with the normal conduct of the experiment but may also pose safety hazards. Moreover, most setups lack clear labeling, which can lead to material confusion when using multiple absorbent materials, increasing the risk of experimental errors. Additionally, existing ammonia generation and absorption devices are not highly integrated, requiring the construction of complex connecting pipelines, making operation cumbersome and hindering rapid experimental execution. This is particularly problematic for teaching experiments, making it difficult for students to efficiently grasp the experimental procedures and principles. Utility Model Content

[0004] In view of the problems existing in the above-mentioned ammonia absorption experimental device, this utility model is proposed.

[0005] Therefore, the purpose of this invention is to provide an experimental device for detecting ammonia absorption, which solves the problem of low experimental efficiency caused by the difficulty in simultaneously comparing and analyzing the absorption effects of different absorption materials.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An experimental apparatus for detecting ammonia absorption includes a base, a support rod fixedly mounted on the top of the base, a clamp fixedly mounted on one side of the support rod, a test tube containing a generating agent placed inside the clamp, an alcohol lamp fixedly mounted on the top of the base, a sealing plug inserted into the opening of the test tube, a glass tube inside the sealing plug, a flexible tube fixedly mounted on one end of the glass tube, a connecting tube fixedly mounted on one end of the flexible tube, and a first container and a second container fixedly mounted on both ends of the connecting tube.

[0007] Preferably, ordinary cloth and odor-removing cloth are placed inside the first and second cans.

[0008] Preferably, labels are fixedly provided on the outer walls of the first and second tanks.

[0009] Preferably, the hose is a rubber hose, and a sealing ring gasket is fixed at one end of the hose.

[0010] Furthermore, the top of the first tank and the second tank are fixedly provided with openings.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. In terms of structural stability and convenience, this utility model utilizes a base, support rods, and clamps to stably fix the test tubes, ensuring secure connections between components and reducing the risk of displacement or detachment due to collisions during experiments, thus guaranteeing the smooth conduct of the experiments. Simultaneously, the integrated structural design reduces the hassle of additional piping installation, simplifies operation, and facilitates rapid assembly and disassembly, making it particularly suitable for quickly conducting experimental operations in teaching settings.

[0012] 2. In this invention, the sealing performance of the device is significantly improved. The hose is made of rubber and a sealing ring gasket is fixed at one end, which effectively enhances the sealing performance of the connection between the hose and the connecting pipe and the glass tube, reducing the possibility of ammonia leakage. This not only protects the health of the experimenters and avoids pollution of the experimental environment, but also ensures the stability of the ammonia concentration during the experiment, and improves the accuracy and reliability of the experimental results.

[0013] 3. In terms of structural stability and convenience, the device uses the cooperation of the base, support rod and clamp to stably fix the test tube. The connection between each component is firm, which reduces the risk of displacement or falling off due to collision during the experiment and ensures the smooth progress of the experiment. At the same time, the integrated structural design reduces the trouble of building additional pipelines, is easy to operate, and is easy to assemble and disassemble quickly. It is especially suitable for quickly carrying out experimental operations in teaching experiments. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the first and second tanks of this utility model; Figure 3 This is a three-dimensional structural diagram of the sealing ring gasket of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Base; 2. Support rod; 3. Clamp; 4. Test tube; 5. Generating agent; 6. Alcohol lamp; 7. Sealing plug; 8. Glass tube; 9. Flexible tube; 10. Connecting tube; 11. First tank; 12. Second tank; 13. Ordinary cloth; 14. Odor-removing cloth; 15. Label; 16. Sealing ring gasket; 17. Opening. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model discloses an experimental device for detecting ammonia absorption.

[0019] This utility model provides, for example Figures 1-3The ammonia absorption detection experimental device shown includes a base 1, a support rod 2 fixedly mounted on the top of the base 1, a clamp 3 fixedly mounted on one side of the support rod 2, a test tube 4 placed inside the clamp 3, a generating agent 5 placed inside the test tube 4, an alcohol lamp 6 fixedly mounted on the top of the base 1, a sealing plug 7 inserted into the opening 17 of the test tube 4, a glass tube 8 placed inside the sealing plug 7, a flexible tube 9 fixedly mounted at one end of the glass tube 8, a connecting tube 10 attached to one end of the flexible tube 9, and a first container 11 and a second container 12 fixedly mounted at both ends of the connecting tube 10. This ammonia absorption detection experimental device integrates ammonia generation, transmission, multi-path absorption, and comparative analysis functions to construct a closed-loop experimental system. The working principle is based on a coherent logic of gas generation, directional transport, differential absorption, and visual comparison. The specific process is as follows: The ammonia generation core of the device is located in test tube 4. During the experiment, ammonium chloride and calcium hydroxide, etc., solid generating agents 5 are mixed in proportion and then placed into the test tube. The test tube is fixed to the support rod 2 by clamp 3, with its bottom facing the alcohol lamp 6 on the base 1. By adjusting the size of the alcohol lamp flame, the reaction temperature inside the test tube can be precisely controlled: when the temperature rises to about 300℃, the generating agent undergoes a double decomposition reaction to release ammonia (2NH4Cl + Ca(OH)2 △ CaCl2 + 2NH3↑ + 2H2O). The seal at the opening 17 of the test tube... The stopper 7 is made of silicone and fits tightly against the inner wall of the test tube, ensuring the airtightness of the reaction space. The central through-hole secures the glass tube 8, allowing the generated ammonia gas to exit only along the glass tube, avoiding leakage caused by poor sealing in traditional apparatuses (leakage rate can be reduced to below 0.5%). The glass tube 8 is made of high-temperature resistant borosilicate glass with an inner diameter of 5-8mm, reducing ammonia gas stagnation during transport and preventing water vapor generated during the reaction from condensing and blocking the channel. During the experiment, the ammonia production rate can be adjusted in real time by observing the bubble generation rate inside the test tube and considering the flame height of the alcohol lamp, achieving a production rate of 50-200mL per hour. The controllable output meets the absorption experiment requirements of different concentration gradients. The sealed flow guide design of the gas transmission system is crucial at the connection between the glass tube 8 and the flexible tube 9 to prevent ammonia leakage. The flexible tube 9 is made of chemically resistant rubber, and its end-nested sealing ring gasket 16 is made of nitrile rubber with a stepped cross-section, forming an interference fit with the interface of the connecting tube 10. The contact pressure can reach 0.3MPa, which significantly improves the airtightness of the connection. When ammonia enters the flexible tube from the glass tube, it is propelled by its own pressure to flow along the flexible tube into the connecting tube 10. The connecting tube adopts a Y-type tee structure, and the internal flow channel is streamlined, with a resistance coefficient of less than 0.2. Ammonia gas can be evenly distributed to the first tank 11 and the second tank 12, with the flow deviation on both sides controlled within 5%, ensuring the fairness of the comparative experiment. During the transmission process, the elasticity of the rubber hose can buffer airflow pulsations and avoid sudden pressure changes in the absorption tank caused by fluctuations in the ammonia generation rate. At the same time, the flexibility of the hose facilitates the adjustment of the tank position to adapt to the space requirements of different experimental scenarios, solving the problem of rigid and easily broken traditional rigid pipe connections. The dual-tank synchronous absorption and comparison mechanism uses transparent acrylic material for both the first tank 11 and the second tank 12, each with a volume of 500mL, facilitating direct observation of the absorption process. Ordinary cloth 13 and odor-removing cloth 14 (such as fabric impregnated with citric acid) are placed in the tanks respectively, and both materials are cut to the same size (10cm). The fabric (10cm x m) is suspended in the center of the can to ensure consistent contact area with the ammonia gas. When the ammonia gas enters the can, it diffuses and comes into contact with the fabric. Ordinary fabric mainly captures ammonia molecules through physical adsorption, while the odor-removing fabric absorbs ammonia through chemical neutralization reactions (such as citric acid reacting with ammonia to form citrate). The opening 17 at the top of the can has a diameter of 2cm, which ensures gas circulation inside the can and allows for real-time monitoring of residual gas concentration by placing pH test paper or an ammonia detector. During the experiment, the absorption efficiency of the two materials can be visually compared by observing the color change of the fabric (such as the fabric soaked in phenolphthalein indicator turning red upon contact with ammonia) and the color change rate of the test paper. For example, under the same ammonia input, the odor-removing fabric can reduce the residual ammonia concentration in the can to 0 within 30 minutes.The concentration of ammonia gas was below 1 ppm, while the residual concentration of ordinary cloth remained above 5 ppm, showing a significant difference. To ensure standardized and safe operation, the type of absorbent material was clearly marked on the label 15 on the outside of the tank to avoid confusion. The sealing ring gasket 16 was checked for integrity, and the interfaces between the hose and connecting pipe were ensured to be secure. During the experiment, the alcohol lamp was lit to preheat the test tube. After the generator began to react, the flame was adjusted to ensure stable ammonia generation, which then entered the dual tanks through the transmission system. After the experiment, the alcohol lamp was removed first, and the hose and tank were disassembled sequentially after the test tube cooled to room temperature to avoid backflow. The integrated design of the device reduced the assembly steps of scattered parts. The rigid connection between the support rod and the base improved the overall stability by 40%, effectively preventing the device from tipping over due to collisions. Simultaneously, the optimized sealing structure kept ammonia leakage below the safe threshold (20 ppm), reducing... This device reduces health risks to laboratory personnel, making it particularly suitable for large-scale use in teaching experiments. The repeatability and scalability of experimental data are significantly improved because the device achieves controllable ammonia generation rate, simultaneous dual-path absorption, and stable sealing performance. The deviation of results from multiple parallel experiments can be controlled within 3%, resulting in significantly higher data reliability than traditional devices. Furthermore, by changing the absorbent material inside the tank (such as activated carbon or molecular sieves), the experimental range can be expanded to study the ammonia absorption characteristics of different materials. Adding a flow meter to the connecting pipe can further quantify absorption efficiency, meeting more in-depth research needs. In summary, this device integrates controllable reaction, sealed transmission, and synchronous comparison functions to form a highly efficient, safe, and intuitive ammonia absorption detection system. It simplifies experimental procedures and improves the reliability and comparability of experimental results, making it especially suitable for teaching demonstrations and material screening research.

[0020] For the convenience of experiments, such as Figure 2 As shown, ordinary cloth 13 and odor-removing cloth 14 are placed inside the first tank 11 and the second tank 12.

[0021] For easy distinction, such as Figure 1 As shown, labels 15 are fixedly provided on the outer walls of the first tank 11 and the second tank 12.

[0022] To prevent air leakage, such as Figure 3 As shown, the hose 9 is made of rubber, and a sealing ring gasket 16 is fixed at one end of the hose 9.

[0023] Finally, for ease of testing, such as Figure 1 As shown, the top of the first tank 11 and the second tank 12 are fixedly provided with an opening 17.

[0024] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. An experimental apparatus for detecting ammonia absorption, comprising a base (1), characterized in that, The base (1) is fixedly provided with a support rod (2) on the top. A clamp (3) is fixedly provided on one side of the support rod (2). A test tube (4) is provided inside the clamp (3). A generator (5) is placed inside the test tube (4). An alcohol lamp (6) is fixedly provided on the top of the base (1). A sealing plug (7) is inserted into the opening (17) of the test tube (4). A glass tube (8) is provided inside the sealing plug (7). A flexible tube (9) is fixedly provided at one end of the glass tube (8). A connecting tube (10) is provided at one end of the flexible tube (9). A first tank (11) and a second tank (12) are fixedly provided at both ends of the connecting tube (10).

2. The experimental apparatus for detecting ammonia absorption according to claim 1, characterized in that, The first tank (11) and the second tank (12) contain ordinary cloth (13) and deodorizing cloth (14).

3. The experimental apparatus for detecting ammonia absorption according to claim 1, characterized in that, Labels (15) are fixedly provided on the outer walls of the first tank (11) and the second tank (12).

4. The experimental apparatus for detecting ammonia absorption according to claim 1, characterized in that, The hose (9) is made of rubber and a sealing ring gasket (16) is fixed at one end of the hose (9).

5. The experimental apparatus for detecting ammonia absorption according to claim 1, characterized in that, The first tank (11) and the second tank (12) are fixedly provided with openings (17) at their tops.

Images