Indoor ammonia volatilization detection device

Abstract

The utility model belongs to a kind of indoor ammonia volatilization detection device;Including ammonia volatilization bottle, the top of ammonia volatilization bottle is equipped with the quantitative bottle cap unit for collecting and temporarily storing ammonia, quantitative bottle cap unit at least includes the quantitative cavity for collecting and temporarily storing ammonia gas produced in ammonia volatilization bottle, one end of quantitative cavity is equipped with ammonia outlet pipeline, the other end of quantitative cavity is equipped with ammonia inlet pipeline, ammonia outlet pipeline is connected with ammonia inlet pipeline by three-way and ammonia concentration detection device, the third end of three-way is connected with tail gas treatment unit;With the advantages that it is convenient to operate, no need to operate personnel to contact equipment interior in detection process, thereby realizing real-time detection and guaranteeing the accuracy of detection result.

Description

Technical Field

[0001] This utility model belongs to the field of ammonia volatilization detection technology, specifically an indoor ammonia volatilization detection device. Background Technology

[0002] Ammonia volatilization in soil is a significant pathway for the gaseous loss of nitrogen fertilizer from farmland. Volatilized ammonia not only causes ecological problems such as soil acidification and eutrophication through wet and dry deposition, but also forms ammonium salt particles in the atmosphere by reacting with ammonia oxides and sulfur oxides, which are a major component of smog and pose a serious threat to human health. Therefore, research on soil ammonia volatilization is of great importance. However, field experiments are highly unpredictable; climatic conditions, soil characteristics, farming practices, and water and fertilizer management all influence soil ammonia volatilization. Differences in field microclimates and the randomness of ammonia nitrogen collection can introduce significant errors into the research results. In contrast, indoor environmental conditions are easier to control, ammonia collection is more accurate, and it is more convenient to conduct mechanistic studies to analyze the impact of different factors on soil ammonia volatilization.

[0003] Although existing ammonia volatilization monitoring devices can simulate indoor cultivation conditions to some extent for monitoring soil ammonia volatilization, some shortcomings still exist. For example, Chinese utility model patent, authorization announcement number: CN221100197U, entitled "Soil Ammonia Volatilization Collection Device in Cultivation Experiment," discloses a device including a bottle body with a soil layer at the bottom, a first absorbent sponge above the soil layer, and a top cover with a through hole connected to a venting pipe. A second absorbent sponge is placed inside the venting pipe. The placement of the venting pipe and the second absorbent sponge reduces the contact area with air, preventing it from drying out quickly and extending its lifespan. The first absorbent sponge absorbs NH3 volatilized from the soil, while the second absorbent sponge prevents interference from external air, reducing errors caused by external air in the experiment. The above-mentioned device requires the sponge to be removed, soaked, and then tested in the laboratory, which is quite cumbersome and cannot measure the soil ammonia volatilization value in real time. Furthermore, some ammonia will be lost when the sponge is replaced, which will cause deviations in the test results and cannot guarantee the accuracy of the test results. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides an indoor ammonia volatilization detection device to solve the technical problems existing in the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An indoor ammonia volatilization detection device includes an ammonia volatilization bottle. The top of the ammonia volatilization bottle is provided with a metering cap unit for collecting and temporarily storing ammonia. The metering cap unit includes at least a metering cavity for collecting and temporarily storing ammonia produced in the ammonia volatilization bottle. One end of the metering cavity is provided with an ammonia outlet pipe, and the other end of the metering cavity is provided with an ammonia inlet pipe. The ammonia outlet pipe is connected to the ammonia inlet pipe through a tee and an ammonia concentration detection device. The third end of the tee is connected to a tail gas treatment unit.

[0007] The beneficial effects of this utility model are as follows: The essence of this utility model is to use an ammonia concentration detection device to detect the concentration of volatile ammonia, and simultaneously determine the volume of volatile ammonia by setting a quantitative chamber. Finally, the volatilization value of ammonia is determined by the concentration and volume of volatile ammonia. Furthermore, this utility model uses a quantitative chamber to collect the volatilized ammonia from the ammonia volatilization bottle, while also achieving temporary storage. After collecting for a certain period (the specific collection time can be determined according to actual working conditions), the volatilized ammonia circulates between the quantitative chamber and the ammonia concentration detection device, based on the quantitative chamber. When the concentration detection value in the ammonia concentration detection device reaches a stable state, the concentration value of volatile ammonia can be obtained, and the volatilization value of ammonia is finally derived based on the volume of the quantitative chamber. Furthermore, after the aforementioned concentration determination, the ammonia can be treated by a tail gas treatment unit to avoid environmental pollution. This utility model can quickly obtain the ammonia volatilization value based on the concentration value, and has the characteristics of simple operation and high accuracy.

[0008] Preferably, the metering cap unit includes a metering chamber with a conduit at the bottom that communicates with the inside of the ammonia vaporizing bottle, and a fourth valve is provided on the conduit.

[0009] Preferably, the ammonia vaporizing bottle has a rubber stopper at its opening, and the lower part of the conduit passes through the rubber stopper and connects to the interior of the ammonia vaporizing bottle.

[0010] Preferably, the metering cap unit further includes a mounting bracket disposed inside the metering chamber and near the ammonia inlet pipe, and a non-powered fan capable of rotation is provided on the mounting bracket corresponding to the ammonia inlet pipe.

[0011] Preferably, the metering cap unit further includes a support portion disposed between the ammonia vapor bottle and the metering chamber; the support portion includes a base and a support rod disposed on the top of the base, the bottom of the base is adapted to the contour of the upper surface of the ammonia vapor bottle, the bottom of the support rod is fixedly connected to the bottom of the base, and the top of the support rod is fixedly connected to the bottom of the metering chamber.

[0012] Preferably, the quantitative cavity is cylindrical, with a bottom diameter of 5-10 cm and a height of 20-30 cm.

[0013] Preferably, a first valve is provided between the tee and the ammonia concentration detection device, a third valve is provided between the ammonia concentration detection device and the ammonia inlet pipe, and a second valve is provided between the third end of the tee and the tail gas treatment unit.

[0014] Preferably, the exhaust gas treatment unit includes an exhaust gas treatment bottle containing exhaust gas treatment liquid, the third end of the three-way valve is connected to the lower part of the exhaust gas treatment bottle through a pipe, and an exhaust pipe is provided at the top of the exhaust gas treatment bottle.

[0015] Preferably, the bottom of the pipe at the third end of the tee is provided with a diffuser plate, which is located below the liquid surface of the exhaust gas treatment liquid, and the bottom of the diffuser plate is provided with a number of exhaust holes evenly distributed.

[0016] An indoor ammonia volatilization detection device manufactured according to the above scheme is designed to detect the concentration of volatilized ammonia using an ammonia concentration detection device. Simultaneously, it determines the volume of volatilized ammonia by setting a quantitative chamber, and finally determines the ammonia volatilization value by combining the concentration and volume of volatilized ammonia. This design can quickly obtain the ammonia volatilization value from the ammonia concentration detection result, is easy to operate, and ensures the accuracy of the detection results by eliminating contact between the operator and the device's internal components. Furthermore, this invention divides the entire process into three parts according to the above design: the first part is the ammonia volatilization stage, which mainly involves allowing the ammonia volatilized from the ammonia volatilization bottle to enter the quantitative chamber; the second part... The first part uses a quantitative chamber as a base to circulate the volatilized ammonia between the quantitative chamber and the ammonia concentration detection device. The ammonia concentration detected by the device stabilizes, ensuring the accuracy of the final detection result. The second part processes the volatilized ammonia. Using the ammonia concentration detection device as a base, the ammonia from both the device and the quantitative chamber is fed into a tail gas treatment unit for further processing. The ammonia concentration detection device determines whether the ammonia has been completely processed, laying the foundation for ensuring the accuracy of subsequent ammonia volatilization detection. This system boasts advantages such as a simple and reasonable process design, ease of operation, and no need for operators to contact the internal components of the equipment during detection, thus achieving real-time detection and ensuring the accuracy of the results. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the quantitative bottle cap unit of this utility model.

[0020] Figure 3 This is a schematic diagram showing the positional relationship between the quantitative cavity and the unpowered fan of this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the air diffuser of this utility model.

[0022] In the diagram: 1. Ammonia vaporizing bottle; 2. Metering chamber; 3. Ammonia outlet pipe; 4. Ammonia inlet pipe; 5. Ammonia concentration detection device; 6. Conduit; 7. Rubber stopper; 8. Mounting bracket; 9. Non-powered fan; 10. Base; 11. Support rod; 12. Tail gas treatment bottle; 13. Exhaust pipe; 14. Dispersing plate; 15. Exhaust port; 16. First valve; 17. Second valve; 18. Third valve; 19. Fourth valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] The following is in conjunction with the appendix Figure 1-4This application provides a further detailed description of an indoor ammonia volatilization detection device. The device includes an ammonia volatilization bottle 1. The top of the ammonia volatilization bottle 1 is provided with a quantitative cap unit for collecting and temporarily storing ammonia. The quantitative cap unit includes at least a quantitative cavity 2 for collecting and temporarily storing ammonia produced in the ammonia volatilization bottle 1. One end of the quantitative cavity 2 is provided with an ammonia outlet pipe 3, and the other end of the quantitative cavity 2 is provided with an ammonia inlet pipe 4. The ammonia outlet pipe 3 is connected to the ammonia inlet pipe 4 through a tee and an ammonia concentration detection device 5. The third end of the tee is connected to a tail gas treatment unit. As is well known, ammonia volatilization testing of soil requires multiple tests on the same sample at different time periods. However, traditional techniques affect the ammonia volatilization value of the soil whether the sponge layer is removed or placed (and also pose a risk of environmental pollution). Furthermore, the testing process is cumbersome and susceptible to human error (due to variations in operator skill levels). Therefore, this invention addresses these shortcomings with the aforementioned technical solution. This solution utilizes an ammonia volatilization bottle 1 and a quantitative chamber 2 as the main components during the ammonia volatilization stage, enabling the ammonia volatilized in the ammonia volatilization bottle 1 to quickly enter the quantitative chamber 2. During the detection stage, the quantitative chamber... The main body consists of a circulation pipeline composed of body 2 and ammonia concentration detection device 5, which enables rapid response of ammonia concentration during detection, laying the foundation for obtaining ammonia volatilization value quickly and accurately. During the ammonia emission stage, ammonia concentration detection device 5 is used to determine whether ammonia has been completely emitted, ensuring the accuracy of subsequent detection results and avoiding environmental pollution. Compared with the prior art, this utility model has the advantages of convenient operation, reasonable process design, real-time rapid detection, convenient rapid detection of the same sample at different time periods, ensuring the accuracy of detection results while avoiding environmental pollution, and solving the defect of detection result deviation caused by different operator skill levels. It should be noted that the quantitative chamber 2 refers to the chamber containing a fixed volume of gas, which facilitates the calculation of ammonia volatilization value through ammonia concentration measurement. The volume of gas contained in the quantitative chamber 2 can be specifically set according to the equipment and operating conditions. The quantitative cap unit described in this utility model is located on the top of the ammonia volatilization bottle 1. One purpose is to use it as a cap for the ammonia volatilization bottle 1, and another purpose is to use it as a collection and storage device for volatilized ammonia. At the same time, the quantitative cap unit can also work with the ammonia concentration detection device 5 to detect the concentration of ammonia. Furthermore, it can also serve as a transfer station during ammonia tail gas emission. The ammonia concentration detection device 5 can not only detect the ammonia concentration, but also provide data support for whether the ammonia tail gas has been completely discharged. It should be specifically noted that the ammonia concentration detection device 5 described in this utility model can be purchased directly from the market. Its structure mainly includes an air inlet, an air outlet, a component for detecting ammonia concentration, and an air pump integrated with the detection device. Since it is not the focus of this utility model, its structure will not be described in detail.

[0025] Furthermore, the quantitative bottle cap unit includes a quantitative cavity 2 with a conduit 6 connected to the interior of the ammonia volatilization bottle 1 at the lower part, and a fourth valve 19 is provided on the conduit 6.

[0026] Furthermore, a rubber stopper 7 is provided at the mouth of the ammonia vaporizing bottle 1, and the lower part of the conduit 6 passes through the rubber stopper 7 and connects to the interior of the ammonia vaporizing bottle 1. This arrangement allows for convenient collection of vaporized ammonia while ensuring airtightness. Especially during the ammonia concentration detection stage or ammonia tail gas emission stage, it enables the ammonia vaporizing bottle 1 to become a sealed cavity, preventing any impact on ammonia detection results or ammonia tail gas treatment.

[0027] Furthermore, the quantitative bottle cap unit also includes a mounting bracket 8 disposed inside the quantitative chamber 2 and near the ammonia inlet pipe 4. A rotatable, non-powered fan 9 is mounted on the mounting bracket 8 corresponding to the ammonia inlet pipe 4. The mounting bracket 8 provides a mounting position for the non-powered fan 9, which is powered by the airflow from the ammonia inlet pipe 4. During rotation, the ammonia is evenly dispersed (ammonia has a lower density than air), improving the efficiency and accuracy of the ammonia concentration detection device 5.

[0028] Furthermore, the metering cap unit also includes a support portion disposed between the ammonia evaporation bottle 1 and the metering chamber 2; the support portion includes a base 10 and a support rod 11 disposed on the top of the base 10. The bottom of the base 10 is adapted to the contour of the upper surface of the ammonia evaporation bottle 1, the bottom of the support rod 11 is fixedly connected to the bottom of the base 10, and the top of the support rod 11 is fixedly connected to the bottom of the metering chamber 2. This arrangement ensures the structural stability between the ammonia evaporation bottle 1 and the metering chamber 2, preventing tipping during use. The base 10 in this invention is fitted onto the outside of the top opening of the ammonia evaporation bottle 1, and the bottom of the base 10 is in full contact with the upper surface of the ammonia evaporation bottle 1 (the lower surface of the base 10 fits and is tightly fitted to the upper surface of the ammonia evaporation bottle 1), thereby increasing friction. The metering chamber 2, the support rod 11, and the base 10 are an integral structure, achieving both improved structural stability and ease of assembly.

[0029] Furthermore, the quantitative cavity 2 is cylindrical, with a bottom diameter of 5-10 cm and a height of 20-30 cm.

[0030] Furthermore, a first valve 16 is provided between the tee and the ammonia concentration detection device 5, a third valve 18 is provided between the ammonia concentration detection device 5 and the ammonia inlet pipe 4, and a second valve 17 is provided between the third end of the tee and the tail gas treatment unit. These features facilitate process control.

[0031] Furthermore, the exhaust gas treatment unit includes an exhaust gas treatment bottle 12 containing exhaust gas treatment liquid, the third end of the three-way valve is connected to the lower part of the exhaust gas treatment bottle 12 through a pipe, and an exhaust pipe 13 is provided on the top of the exhaust gas treatment bottle 12.

[0032] Furthermore, the bottom of the pipe at the third end of the tee is provided with a diffuser plate 14, which is located below the liquid surface of the exhaust gas treatment liquid. The bottom of the diffuser plate 14 is provided with a plurality of exhaust holes 15.

[0033] The specific working process of this utility model is as follows: When using this utility model, take 0-20cm of topsoil from the field (when taking 0cm topsoil, it refers to taking the surface soil); weigh the fertilizer, mix the topsoil and fertilizer evenly, and spread the evenly mixed mixture evenly in the ammonia vaporization bottle 1; close the first valve 16, the second valve 17, and the third valve 18, and open the fourth valve 19 to allow the ammonia vaporized in the ammonia vaporization bottle 1 to enter the metering chamber 2; after collecting for a period of time, close the fourth valve 19, and open the first valve 16 and the third valve 18. The gas in the metering chamber 2 enters the ammonia concentration detection device 5 through the first valve 16, and flows back to the metering chamber 2 through the third valve 18 to achieve circulation. During the above circulation process, the ammonia concentration detection device 5 detects the ammonia concentration gradually... The ammonia concentration gradually stabilizes, and once it reaches a certain time threshold, the ammonia concentration value is determined. The ammonia volatilization value is calculated using the ammonia concentration value and the volume of the quantitative chamber 2. After determining the ammonia volatilization value, the first valve 16 is closed, while the third valve 18 and the second valve 17 are open. The ammonia tail gas from the ammonia concentration detection device 5, the quantitative chamber 2, and the auxiliary pipeline enters the tail gas treatment bottle 12 and is evenly dispersed through the exhaust holes 15 in the diffuser 14. The tail gas is then absorbed by the tail gas treatment liquid, and the absorbed tail gas is discharged through the exhaust pipe 13. The above steps can be repeated when the ammonia volatilization value needs to be detected again. The above process is easy to operate, and no operator needs to contact the inside of the equipment during the detection process, thus achieving real-time detection and ensuring the accuracy of the detection results.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An indoor ammonia volatilization detection device, comprising an ammonia volatilization bottle (1), characterized in that: the top of the ammonia volatilization bottle (1) is provided with a metering cap unit for collecting and temporarily storing ammonia. The metering cap unit includes at least a metering chamber (2) for collecting and temporarily storing ammonia produced in the ammonia volatilization bottle (1). One end of the metering chamber (2) is provided with an ammonia outlet pipe (3), and the other end of the metering chamber (2) is provided with an ammonia inlet pipe (4). The ammonia outlet pipe (3) is connected to the ammonia inlet pipe (4) through a three-way valve and an ammonia concentration detection device (5). The third end of the three-way valve is connected to the tail gas treatment unit.

2. The indoor ammonia volatilization detection device according to claim 1, characterized in that: The quantitative bottle cap unit includes a quantitative cavity (2) with a conduit (6) at the bottom that is connected to the inside of the ammonia vaporizing bottle (1), and a fourth valve (19) is provided on the conduit (6).

3. The indoor ammonia volatilization detection device according to claim 2, characterized in that: The ammonia vaporizing bottle (1) is provided with a rubber stopper (7) at the bottle mouth, and the lower part of the conduit (6) passes through the rubber stopper (7) and is connected to the interior of the ammonia vaporizing bottle (1).

4. An indoor ammonia volatilization detection device according to claim 2 or 3, characterized in that: The quantitative bottle cap unit also includes a mounting bracket (8) located inside the quantitative cavity (2) and close to the ammonia inlet pipe (4). A non-powered fan (9) that can rotate is provided on the mounting bracket (8) corresponding to the ammonia inlet pipe (4).

5. The indoor ammonia volatilization detection device according to claim 4, characterized in that: The metering cap unit also includes a support portion disposed between the ammonia vaporizing bottle (1) and the metering chamber (2); The support unit includes a base (10) and a support rod (11) set on the top of the base (10). The bottom of the base (10) is adapted to the upper surface contour of the ammonia vapor bottle (1). The bottom of the support rod (11) is fixedly connected to the bottom of the base (10), and the top of the support rod (11) is fixedly connected to the bottom of the metering chamber (2).

6. The indoor ammonia volatilization detection device according to claim 1, characterized in that: The quantitative cavity (2) is cylindrical, with a bottom diameter of 5-10 cm and a height of 20-30 cm.

7. The indoor ammonia volatilization detection device according to claim 1, characterized in that: A first valve (16) is provided between the tee and the ammonia concentration detection device (5), a third valve (18) is provided between the ammonia concentration detection device (5) and the ammonia inlet pipe (4), and a second valve (17) is provided between the third end of the tee and the tail gas treatment unit.

8. An indoor ammonia volatilization detection device according to claim 1 or 7, characterized in that: The exhaust gas treatment unit includes an exhaust gas treatment bottle (12) containing exhaust gas treatment liquid. The third end of the three-way valve is connected to the lower part of the exhaust gas treatment bottle (12) through a pipe. An exhaust pipe (13) is provided on the top of the exhaust gas treatment bottle (12).

9. The indoor ammonia volatilization detection device according to claim 8, characterized in that: The bottom of the pipe at the third end of the tee is provided with a diffuser plate (14), which is located below the liquid surface of the exhaust gas treatment liquid. Several exhaust holes (15) are evenly provided at the bottom of the diffuser plate (14).

Images