Indoor quantitative evaluation device for ammonia volatilization

Abstract

The utility model belongs to an indoor quantitative evaluation device for ammonia volatilization. Comprising an ammonia volatilization and gas collection unit for collecting ammonia gas and an ammonia quantitative evaluation unit matched with the ammonia volatilization and gas collection unit, the ammonia volatilization and gas collection unit at least comprises a wide-mouth gas collection bottle, a surface soil layer is arranged at the inner bottom of the wide-mouth gas collection bottle, a bottle plug is arranged at a bottle opening of the wide-mouth gas collection bottle, a first guide pipe communicated with the ammonia quantitative evaluation unit is arranged in the bottle plug in a penetrating manner, and a pressure balance part is arranged in the wide-mouth gas collection bottle; the ammonia quantitative evaluation unit at least comprises an ammonia gas detection tube; the device has the characteristics of conveniently realizing soil culture, gas collection, gas extraction, atmospheric pressure balance and detection, and also has the advantages of being convenient to carry, easy to operate, capable of rapidly detecting and convenient to rapidly display the fertilizer effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of ammonia volatilization detection, in particular to an indoor quantitative evaluation device for ammonia volatilization. Background Art

[0002] Ammonia volatilization loss is one of the main ways of nitrogen fertilizer loss in farmland. Various controlled-release technologies are currently available to inhibit the release of ammonia from nitrogen fertilizers, but there is no simple and easy-to-operate device to conduct quality inspection on the ammonia volatilization inhibition effect of fertilizer products.

[0003] Indoor testing methods for inhibiting ammonia volatilization typically include boric acid absorption-standard acid titration, continuous closed chamber ventilation, and sponge absorption. These methods all utilize an acidic solution or a device soaked in an acidic solution to absorb ammonia in the culture device, followed by further analysis through titration, colorimetry, and other methods. However, existing methods all suffer from complex experimental techniques, are time-consuming, and labor-intensive. Utility Model Content

[0004] The utility model provides an indoor quantitative evaluation device for ammonia volatilization, which is used to solve the technical problems raised in the above background technology.

[0005] The technical solution of the utility model is:

[0006] An indoor quantitative evaluation device for ammonia volatilization includes an ammonia volatilization gas collection unit for collecting ammonia gas, and an ammonia quantitative evaluation unit adapted to the ammonia volatilization gas collection unit;

[0007] The ammonia volatilization gas collection unit includes at least one wide-mouth gas collection bottle, the inner bottom of which is provided with a surface soil layer, the mouth of which is provided with a stopper, the stopper being passed through a first conduit for communicating with the ammonia quantitative evaluation unit, and a pressure balance portion being provided in the wide-mouth gas collection bottle;

[0008] The ammonia quantitative evaluation unit at least includes an ammonia detection tube.

[0009] The beneficial effects of the present invention are as follows: the ammonia detection tube used in the present invention can be purchased directly on the market. The principle is that after the detection gas passes through the special solid carrier material filled in the tube, it can react with ammonia and show a typical color change. According to the scale line marked on the color-changing part of the detection tube and the ventilation volume during use, the concentration of ammonia in the detection gas can be obtained. The present invention is designed using the ammonia detection tube and its principle. Specifically, ammonia volatile gas is collected through a wide-mouthed gas collecting bottle, and the pressure balance part is used to achieve the balance of pressure in the wide-mouthed gas collecting bottle. At the same time, the airtightness of the wide-mouthed gas collecting bottle is ensured to prevent leakage or gas exchange that may lead to inaccurate detection results. The present invention is particularly suitable for use in product promotion where the effect can be seen quickly.

[0010] Preferably, one end of the first conduit is arranged at the inner upper part of the wide-mouth gas collecting bottle, and the other end thereof is arranged at the outside of the wide-mouth gas collecting bottle; a double locking member is provided on the first conduit outside the wide-mouth gas collecting bottle.

[0011] Preferably, the double locking member includes an air-stop clamp provided on the first conduit, and a glass stopper provided at the end of the first conduit.

[0012] Preferably, the pressure balancing part includes a gas collecting bag arranged in a wide-mouthed gas collecting bottle, the gas collecting bag is connected to one end of the second conduit, and the other end of the second conduit is connected to the atmosphere through a bottle stopper.

[0013] Preferably, the end of the second conduit is arranged in the ventilation strip inside the air collecting bag, the air collecting bag and the ventilation strip are an integrated structure, and the outlet of the ventilation strip is arranged in the lower part of the air collecting bag, and a vaseline layer is provided at the connection between the second conduit and the air collecting bag.

[0014] Preferably, the ammonia quantitative evaluation unit includes a syringe for transferring ammonia volatile gas and an ammonia detection component compatible with the syringe.

[0015] Preferably, the ammonia detection component includes an adapter connected to the syringe, and the adapter is connected to the ammonia detection tube through a connecting hose.

[0016] Preferably, the height of the wide-mouth gas collecting bottle is 25 cm, the height of the surface soil layer is 3-5 cm, and the height of the gas collecting bag is 15 cm.

[0017] Preferably, the inner diameter of the wide-mouth gas collecting bottle is 11 cm, and the outer diameter of the gas collecting bag is 10 cm.

[0018] An indoor quantitative evaluation device for ammonia volatilization is made according to the above scheme. By using a wide-mouthed gas collecting bottle and setting a surface soil layer simulating soil at the bottom thereof, ammonia is volatilized and is in the wide-mouthed gas collecting bottle. At the same time, in order to balance the atmospheric pressure in the gas collecting bottle, the utility model is specially provided with a pressure balancing part, which can keep the pressure inside the wide-mouthed gas collecting bottle balanced during the gas extraction process, avoiding the defects of traditional technology that requires continuous vacuum pump extraction and entry of gas from outside the device for internal and external gas exchange. Furthermore, the syringe in the ammonia quantitative evaluation unit can not only facilitate the extraction of gas in the wide-mouthed gas collecting bottle, but also achieve the purpose of quantitative extraction, laying the foundation for the detection of ammonia detection tubes, and has the characteristics of convenient soil cultivation, gas collection, gas extraction, atmospheric pressure balance and detection. Furthermore, it can achieve the advantages of easy portability, easy operation, rapid detection and rapid display of fertilizer effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a structural diagram of the present utility model.

[0020] Figure 2 This is a schematic structural diagram of the ammonia quantitative evaluation unit of the present utility model.

[0021] Numbers in the figure: 1. Wide-mouth gas collecting bottle; 2. Surface soil layer; 3. Bottle stopper; 4. First conduit; 5. Ammonia detection tube; 6. Air stopper; 7. Glass stopper; 8. Gas collecting bag; 9. Second conduit; 10. Vaseline layer; 11. Syringe; 12. Adapter; 13. Connecting hose; 14. Vent strip. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0024] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate and simplify the description of the utility model and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0026] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] like Figure 1-2 As shown, the present invention is an indoor quantitative evaluation device for ammonia volatilization, comprising an ammonia volatilization collection unit for collecting ammonia, and an ammonia quantitative evaluation unit compatible with the ammonia volatilization collection unit. The ammonia volatilization collection unit comprises at least one wide-mouthed gas collecting bottle 1, the inner bottom of which is provided with a surface soil layer 2, and the mouth of the wide-mouthed gas collecting bottle 1 is provided with a stopper 3, through which passes a first conduit 4 for communication with the ammonia quantitative evaluation unit. The wide-mouthed gas collecting bottle 1 is provided with a pressure balance unit. The ammonia quantitative evaluation unit comprises at least one ammonia detection tube 5. The ammonia volatilization collection unit described in the present invention is used to collect volatilized ammonia, while the ammonia quantitative evaluation unit is used to detect ammonia. During the collection process, the surface soil layer 2 is provided to simulate a soil environment, and the volatilized ammonia enters the wide-mouthed gas collecting bottle 1. The volatilized ammonia can then enter the ammonia quantitative evaluation unit through the first conduit 4 for detection. The aforementioned arrangement ensures that the gas collecting bottle is a sealed environment during the soil nitrogen conversion process, preventing the escape of reacted ammonia.

[0028] Furthermore, one end of the first conduit 4 is disposed on the inner upper portion of the wide-mouthed gas collecting bottle 1, and the other end is disposed on the outside of the wide-mouthed gas collecting bottle 1. Double locking members are provided on the first conduit 4 outside the wide-mouthed gas collecting bottle 1. The provision of the double locking members enables effective sealing of the wide-mouthed gas collecting bottle 1, particularly preventing gas from escaping during gas extraction, thereby ensuring the accuracy of measurement results.

[0029] Furthermore, the double locking member includes an air-stop clamp 6 provided on the first conduit 4, and a glass stopper 7 provided at the end of the first conduit 4. In actual use, the air-stop clamp 6 and the glass stopper 7 can effectively ensure the airtightness of the wide-mouthed gas collecting bottle 1. When pumping gas, the glass stopper 7 can be removed first, the gas pumping equipment can be connected to the first conduit 4, and then the air-stop clamp 6 can be opened to prevent ammonia leakage, thereby avoiding environmental pollution and improving the accuracy of the test results. After the gas pumping is completed, the air-stop clamp 6 can be closed first, and then the glass stopper 7 can be installed to prevent the problem of environmental pollution caused by ammonia leakage.

[0030] Furthermore, the pressure balancing unit includes a gas collection bag 8 disposed within the wide-mouthed gas collection bottle 1. The gas collection bag 8 is connected to one end of a second conduit 9, the other end of which is connected to the atmosphere through the bottle stopper 3. The provision of the gas collection bag 8 not only prevents external gas from entering and diluting the reaction gas, but also facilitates the withdrawal of the gas generated by the reaction within the wide-mouthed gas collection bottle 1. The volume of the gas collection bag 8 provides a fixed amount of gas for the test.

[0031] Furthermore, the end of the second conduit 9 is arranged in the ventilation strip 14 inside the air collecting bag 8, the air collecting bag 8 and the ventilation strip 14 are an integrated structure, and the outlet of the ventilation strip 14 is arranged in the lower part of the air collecting bag 8, and a vaseline layer 10 is provided at the connection between the second conduit 9 and the air collecting bag 8. By setting a vaseline layer 10, the airtightness of the interface between the gas collecting bag 8 and the second conduit 9 can be ensured; one end of the vent strip 14 is connected to the opening of the gas collecting bag 8, and the other end is connected to the interior of the gas collecting bag 8. The outlet of the vent strip 14 is a small opening and directly reaches the inner bottom of the gas collecting bag 8; through the above-mentioned setting, the inlet end of the gas collecting bag 8 is connected to the gas collecting bag 8 by a vent strip 14, and the vent strip 14 reaches the bottom inside the gas collecting bag 8, controlling the gas entry with a small opening. Once the gas enters the gas collecting bag 8, it will be difficult to discharge. One end of the second conduit 9 passes through the vent strip 14 to connect to the gas collecting bag 8, thereby ensuring that when the syringe 11 extracts the gas in the wide-mouthed gas collecting bottle 1, the pressure inside and outside the bottle is balanced, that is, the volume of gas extracted is equal to the volume of external air entering the gas collecting bag 8 through the second conduit 9.

[0032] Furthermore, the ammonia quantitative evaluation unit includes a syringe 11 for transferring ammonia volatile gas and an ammonia gas detection component compatible with the syringe 11. The ammonia quantitative evaluation unit described in the present invention includes a syringe 11 that can transfer ammonia volatile gas in the wide-mouth gas collecting bottle 1 and can also meet the quantitative detection requirements of the ammonia detection tube 5.

[0033] Furthermore, the ammonia detection component includes an adapter 12 connected to the syringe 11 , and the adapter 12 is connected to the ammonia detection tube 5 through a connecting hose 13 .

[0034] Furthermore, the height of the wide-mouthed gas collecting bottle 1 is 25 cm, the height of the surface soil layer 2 is 3-5 cm, and the height of the gas collecting bag 8 is 15 cm. By setting the height of the wide-mouthed gas collecting bottle 1, it is possible to simulate the depth of the surface soil of natural ammonia volatilization soil and provide installation space for the pressure balancing device.

[0035] Furthermore, the inner diameter of the wide-mouthed gas collecting bottle 1 is 11 cm, and the outer diameter of the gas collecting bag 8 is 10 cm. The above arrangement allows the gas collecting bag 8 to be installed in the wide-mouthed gas collecting bottle 1 and provides the gas collecting bag 8 with sufficient expansion space after inflation.

[0036] The working principle of the utility model is as follows: air-dried soil that has not been fertilized within 2 months is sieved through a 2mm sieve for later use, and the soil is placed in a wide-mouthed gas collecting bottle 1. The thickness of the soil at the bottom of the wide-mouthed gas collecting bottle 1 is 3-5cm. The soil is gently tamped until the surface of the soil sample is flat, and then the fertilizer to be tested for ammonia volatilization inhibition effect is applied, and an appropriate amount of phosphate buffer containing urease is evenly added to the surface of the surface soil layer 2 to accelerate the conversion of nitrogen in the soil and shorten the detection time of the ammonia volatilization inhibition effect. The amount of application should make the soil surface moist, ensure that there is no water seal layer on the soil surface, ensure that the generated ammonia gas is completely volatilized into the wide-mouthed gas collecting bottle 1, install the first conduit 4 and the matching air-stop clamp 6 and glass stopper 7, as well as the second conduit 9 and the gas collecting bag on the bottle stopper 3; ensure that the entire culture device is in a closed state, wherein a vaseline layer is applied when the gas collecting bag 8 and the second conduit 9 are installed to ensure the airtightness of the interface between the gas collecting bag 8 and the second conduit 9. The above device is placed under the condition of a temperature of 25-37°C for cultivation; after culturing for 2 hours, the wide-mouthed gas collecting bottle 1 is evacuated using a syringe 11. The order of evacuation is to first remove the glass stopper 7, tightly connect the syringe 11 to the first conduit 4, and then loosen the air-stop clamp 6. Two air-stop devices are set to prevent the air-stop devices from being completely released before evacuation, causing gas to escape, thereby ensuring the accuracy of the measurement results. The syringe 11 is provided with a scale, and can be used for detection based on the extraction of a certain amount of gas. Before evacuation, the adapter 12 can be connected to the ammonia detection tube 5 through the connecting hose 13. After the evacuation is completed, the syringe 11 is immediately connected to the adapter 12, and the gas is pushed at a uniform speed so that the gas in the syringe 11 passes through the ammonia detection tube 5 at a uniform speed. The color change of the ammonia volatilization detection tube is observed. The utility model uses the characteristic that the density of ammonia is less than that of air to simulate soil in the surface soil layer 2 at the bottom of the wide-mouthed gas collecting bottle 1, and uses the first conduit 4 to extract a certain amount of ammonia. The utility model has the characteristics of simple structure and easy operation. Compared with the conventional ammonia volatilization detection tube detection method, it can achieve the fastest and quantitative absorption of released ammonia, making up for the need for continuous vacuuming and re-injection of air in the original method, thereby reducing labor intensity to the greatest extent; in addition, compared with the conventional ammonia volatilization tube detection device, the utility model can complete the operation independently, and has a wider range of application scenarios.

[0037] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0038] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of the present utility model.

Claims

1. A quantitative evaluation device for ammonia volatilization indoors, characterized by: The device includes an ammonia volatilization and gas collection unit for collecting ammonia gas, and an ammonia quantitative evaluation unit adapted to the ammonia volatilization and gas collection unit; The ammonia volatilization gas collection unit comprises at least one wide-mouth gas collection bottle (1), the inner bottom of the wide-mouth gas collection bottle (1) is provided with a surface soil layer (2), the bottle mouth of the wide-mouth gas collection bottle (1) is provided with a bottle stopper (3), a first conduit (4) for connecting with an ammonia quantitative evaluation unit is passed through the bottle stopper (3), and a pressure balance part is provided in the wide-mouth gas collection bottle (1); The ammonia quantitative evaluation unit at least comprises an ammonia detection tube (5).

2. The indoor quantitative evaluation device for ammonia volatilization according to claim 1, characterized in that: One end of the first conduit (4) is arranged at the inner upper part of the wide-mouth gas collecting bottle (1), and the other end thereof is arranged outside the wide-mouth gas collecting bottle (1); A double locking piece is provided on the first conduit (4) outside the wide-mouth gas collecting bottle (1).

3. The indoor quantitative evaluation device for ammonia volatilization according to claim 2, characterized in that: The double locking member comprises an air-stop clamp (6) arranged on the first conduit (4), and a glass plug (7) arranged at the end of the first conduit (4).

4. The indoor quantitative evaluation device for ammonia volatilization according to claim 1, characterized in that: The pressure balancing part comprises a gas collecting bag (8) arranged in the wide-mouth gas collecting bottle (1); the gas collecting bag (8) is connected to one end of a second conduit (9); the other end of the second conduit (9) passes through the bottle stopper (3) and is connected to the atmosphere.

5. The indoor quantitative evaluation device for ammonia volatilization according to claim 4, characterized in that: The end of the second conduit (9) is arranged in the ventilation strip (14) inside the air collection bag (8), the air collection bag (8) and the ventilation strip (14) are an integrated structure, and the outlet of the ventilation strip (14) is arranged in the lower part of the air collection bag (8), and a vaseline layer (10) is provided at the connection between the second conduit (9) and the air collection bag (8).

6. The indoor quantitative evaluation device for ammonia volatilization according to claim 1, characterized in that: The ammonia quantitative evaluation unit comprises a syringe (11) for transferring ammonia volatile gas, and an ammonia detection component adapted to the syringe (11).

7. The indoor quantitative evaluation device for ammonia volatilization according to claim 6, characterized in that: The ammonia gas detection component comprises an adapter (12) connected to a syringe (11), and the adapter (12) is connected to an ammonia gas detection tube (5) via a connecting hose (13).

8. The indoor quantitative evaluation device for ammonia volatilization according to claim 4, characterized in that: The height of the wide-mouthed gas collecting bottle (1) is 25 cm, the height of the surface soil layer (2) is 3-5 cm, and the height of the gas collecting bag (8) is 15 cm.

9. The indoor quantitative evaluation device for ammonia volatilization according to claim 8, characterized in that: The inner diameter of the wide-mouthed gas collecting bottle (1) is 11 cm, and the outer diameter of the gas collecting bag (8) is 10 cm.

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