Device for applying alkaline glue solution in soil hydrolytic nitrogen determination process
By designing a device comprising a first cylinder, a second end cap, and a third coating assembly, the application process of alkaline adhesive is simplified, the problems of complex operation and pollution are solved, and the efficiency and accuracy of soil hydrolyzable nitrogen determination are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INST OF AGRI RESOURCES & ENVIRONMENT SICHUAN ACAD OF AGRI SCI
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-19
AI Technical Summary
In existing technologies, applying alkaline adhesives is a complex process that can easily lead to experimental contamination and cleaning difficulties, thus affecting the accuracy of test results.
A device comprising a first cylinder, a second end cap, and a third coating component was designed. Alkaline adhesive liquid in the first cylinder flows out to a third brush through the third coating component, enabling repeated coating with a single sample loading, thus simplifying the operation process.
This significantly simplifies the application of alkaline adhesives, reduces the risk of experimental contamination, and improves operational efficiency and the accuracy of test results.
Smart Images
Figure CN224369307U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of soil testing, particularly the field of soil testing equipment, specifically a device for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil. More specifically, this application provides a simple brush for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil, which simplifies the application process, improves operational efficiency, ensures the accuracy and reliability of test results, and truly reflects the actual situation of hydrolyzable nitrogen in the soil, providing accurate data for soil testing and fertilizer recommendation. Background Technology
[0002] Nitrogen is an essential nutrient for plant growth and development, and the main source of nitrogen for plants is hydrolyzable nitrogen from the soil. By measuring the hydrolyzable nitrogen content in the soil, we can understand the current nitrogen supply status and nutrient supply capacity of the soil, providing an important basis for soil fertilization and guiding growers to apply fertilizers scientifically.
[0003] Soil hydrolyzable nitrogen, also known as alkaline-available nitrogen or soil available nitrogen, includes inorganic nitrogen (ammonium nitrogen and nitrate nitrogen) and easily hydrolyzable organic nitrogen (amino acids, acylammonium, and easily hydrolyzable proteins). The content and quality of alkaline-available nitrogen are related to the content and quality of organic matter. Soil hydrolyzable nitrogen determination is a key method for assessing the available nitrogen content in soil. It measures available nitrogen forms including ammonium nitrogen, nitrate nitrogen, and easily decomposable organic nitrogen components. Alkaline-available nitrogen content has a better correlation with plant nitrogen nutrition than inorganic nitrogen; therefore, measuring alkaline-available nitrogen more accurately reflects the recent nitrogen supply level of the soil than measuring ammonia nitrogen and nitrate nitrogen. The relevant detection principle is as follows: When the soil is treated with alkaline solution, easily hydrolyzable organic nitrogen and ammonium nitrogen are converted into ammonia, while nitrate nitrogen is first converted into ammonium by ferrous sulfate. Ammonia is absorbed by boric acid, and then titrated with a standard acid to calculate the hydrolyzable nitrogen content.
[0004] Currently, the alkaline diffusion method is mainly used to determine the hydrolyzable nitrogen in soil. The references are as follows: [1] Miralimujan Erken, Laboratory methods and precautions for determining hydrolyzable nitrogen in soil [J]. Science and Education Journal: Electronic Edition, 2016(12):1. In the process of determining hydrolyzable nitrogen in soil by alkaline diffusion method, alkaline glue solution needs to be applied to the upper edge of the outer chamber of the diffusion dish, and the frosted glass (smooth side up) needs to be covered and rotated several times until the frosted glass and the edge of the diffusion dish are completely sealed. Among them, the glue solution should be applied carefully and in appropriate amount, so as not to contaminate the inner chamber.
[0005] Currently, the main method for handling the above-mentioned operations is to use a brush-like applicator to apply alkaline adhesive. However, repeatedly dipping the brush in alkaline adhesive is inconvenient for novice or inexperienced lab technicians. In soil hydrolyzable nitrogen experiments, if too little adhesive is applied, it won't be enough to coat a single diffusion dish, requiring repeated applications and increasing the time spent. Conversely, if too much adhesive is applied, it can easily drip onto the lab bench, the diffusion dish itself, or the outer chamber, contaminating the workbench or the dish and increasing cleaning workload and difficulty. Even worse, adhesive can easily drip into the inner chamber of the diffusion dish, contaminating the soil sample and affecting the test results, potentially leading to experimental failure.
[0006] In the process of determining soil hydrolyzable nitrogen using the alkaline diffusion method, simplifying the application of alkaline adhesive has become an urgent technical problem to be solved. Utility Model Content
[0007] The purpose of this invention is to address the problem of simplifying the application of alkaline adhesive in the process of determining soil hydrolyzable nitrogen using the alkaline diffusion method, and to provide a device for applying alkaline adhesive in the process of determining soil hydrolyzable nitrogen.
[0008] To achieve the above objectives, this application adopts the following technical solution:
[0009] An apparatus for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil includes a first cylinder, a second end cap, and a third application component. The first cylinder is tubular, and first connectors are respectively provided at both ends of the first cylinder.
[0010] The second end cap is connected to one end of the first cylinder through the first connector, and the third coating component is connected to the other end of the first cylinder through the first connector, and the liquid inside the first cylinder can flow out through the third coating component.
[0011] The third coating component includes a third cover and a third brush for applying liquid. The third coating component is connected to the first cylinder through the cooperation of the third cover and the first connector. The third brush is connected to the third cover. The third cover is provided with a plurality of third through holes, and the liquid in the first cylinder can flow out to the third brush through the third through holes on the third cover.
[0012] The first cylinder is used to hold alkaline adhesive, and the alkaline adhesive in the first cylinder can flow out through the third coating component.
[0013] The liquid inside the first cylinder can flow out through the third through hole on the third cover to the third brush and wet the third brush.
[0014] The first cylinder is a hollow tube with first connecting parts at both ends.
[0015] The first cylindrical body is made of a transparent material.
[0016] The first cylindrical body is made of plastic or glass.
[0017] The first cylinder has a circular or polygonal cross-section along a section perpendicular to the axial direction of the first cylinder.
[0018] The first cylinder is circular along a cross-section perpendicular to the axial direction of the first cylinder, and the second end cap and the third cap are respectively circular caps with one end open.
[0019] The first connector is a first connecting thread, the second end cap is provided with a second connecting thread that mates with the first connecting thread, and the second end cap can be connected to the first cylinder through the mating of the second connecting thread and the first connecting thread. The third cover is provided with a third connecting thread that mates with the first connecting thread, and the third cover can be connected to the first cylinder through the mating of the third connecting thread and the first connecting thread.
[0020] The third brush is attached to the third cover.
[0021] It also includes a second sealing ring disposed inside the second end cap and a third sealing ring disposed inside the third cover body. The second sealing ring is located between the second end cap and the first cylinder body, and the third sealing ring is located between the third cover body and the first cylinder body.
[0022] The third through hole is evenly distributed along the circumference of the third cover.
[0023] There are two second end caps;
[0024] When the two second end caps are respectively installed at both ends of the first cylinder, the inside of the first cylinder can be used to hold liquid.
[0025] When a second end cap is provided at one end of the first cylinder and a third coating component is provided at the other end of the first cylinder, the liquid inside the first cylinder can flow out through the third coating component and complete the corresponding coating operation through the third coating component.
[0026] The first cylinder is provided with a first scale indicating the volume of liquid inside the first cylinder.
[0027] The first scale is set along the axial direction of the first cylinder.
[0028] There are two first scales; along the direction from one end of the first cylinder to the other end, the two first scales are set in opposite directions.
[0029] As mentioned earlier, the traditional brush-based adhesive application method involves two steps: dipping the brush in alkaline adhesive solution and then applying it. Therefore, when using the alkaline diffusion method to determine soil hydrolyzable nitrogen, operators need to repeatedly perform these two steps, resulting in long working hours and high labor intensity. Furthermore, the brush travels a considerable distance during these two steps, easily dripping onto the experimental table, diffusion dish, or outer chamber, contaminating the workbench or diffusion dish and increasing the workload and difficulty of cleaning.
[0030] Therefore, this application provides an apparatus for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil, comprising a first cylinder, a second end cap, and a third application component. This application adopts a detachable structural design. Through the cooperation of the first cylinder and the second end cap, the alkaline adhesive can be placed inside the first cylinder. Through structural improvements to the third application component, the liquid inside the first cylinder can flow out through the third application component, and the corresponding application operation can be completed through the third application component. This application, through the cooperation of the first cylinder, second end cap, and third application component, allows the alkaline adhesive to be placed inside the first cylinder, enabling one-time sample loading and repeated application, greatly simplifying the operator's operation and reducing the operator's labor intensity. Furthermore, with the improved structure, since it is not necessary to repeatedly dip and apply the alkaline adhesive, the apparatus does not need to move repeatedly between the two operations, greatly reducing the probability of alkaline adhesive dripping onto the test bench, diffusion dish, or outer chamber, which helps to reduce the amount and difficulty of cleaning. Furthermore, the existing technology uses a dipping method for alkaline adhesive, which is greatly affected by human factors. By adopting the structure of this application, the outflow rate of the alkaline adhesive can be controlled by adjusting the size and number of the third through-hole, reducing the risk of the adhesive dripping into the diffusion dish chamber. In summary, this application has a reasonable structure, ingenious concept, and a design that meets the needs of practical applications. It effectively solves the problem of applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil, improving operational efficiency and the accuracy of test results. It has high practical value and promising application prospects, and is worthy of large-scale promotion and application. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the overall structure of the alkaline adhesive application device used in the soil hydrolyzable nitrogen determination process in Example 1.
[0032] Figure 2 This is an overall schematic diagram of the first cylinder with two second end caps at both ends in Example 1.
[0033] Figure 3 for Figure 2 A separate diagram.
[0034] Figure 4 This is the front view of the third application component in Example 1.
[0035] Figure 5 for Figure 4 A schematic diagram of the three-dimensional structure.
[0036] The markings in the diagram are: 1. First cylinder, 2. Second end cap, 3. Third coating component, 4. First connector, 5. Third cap, 6. Third brush, 7. Third through hole. Detailed Implementation
[0037] The present invention will now be described in detail with reference to the accompanying drawings.
[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Example 1
[0039] This embodiment provides an apparatus for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil. The apparatus includes a first cylindrical body, a second end cap, and a third application component. The first cylindrical body is tubular, with first connecting members at both ends. The second end cap is connected to one end of the first cylindrical body via the first connecting members, and the third application component is connected to the other end of the first cylindrical body via the first connecting members.
[0040] The third application assembly includes a third cover and a third brush for applying liquid. The third application assembly is connected to the first cylinder via the cooperation of the third cover and the first connector. The third brush is connected to the third cover, and the third cover has several third through holes. In a specific example, the first cylinder holds the alkaline adhesive. The alkaline adhesive in the first cylinder flows out through the third through holes on the third cover to the third brush, wetting the brush. Using the structure of this application, the third brush is a single unit composed of several fine bristles (similar to the brush head of a paintbrush). After the alkaline adhesive flows out to the third brush, it can be applied through the brush. Furthermore, the third through holes are evenly distributed circumferentially along the third cover, and the third brush is adhered to the third cover.
[0041] In a specific example, as shown in the figure, the first cylinder is a hollow circular tube with first connecting parts at both ends. The first cylinder is circular in cross-section perpendicular to its axial direction. The second end cap and the third cap are both circular caps with one open end. Further, the first connecting part is a first connecting thread, the second end cap has a second connecting thread that mates with the first connecting thread, and the third cap has a third connecting thread that mates with the first connecting thread. In this structure, the second end cap can be connected to the first cylinder through the engagement of the second and first connecting threads, and the third cap can be connected to the first cylinder through the engagement of the third and first connecting threads; the liquid inside the first cylinder can flow out through the third application component. In this structure, the first cylinder, with its hollow cylindrical design and the second end caps at both ends, is used to hold alkaline adhesive.
[0042] Furthermore, two second end caps are preferred; when the two second end caps are respectively disposed at both ends of the first cylinder, the inside of the first cylinder can be used to hold liquid (the two second end caps can seal the two ends of the first cylinder); when one second end cap is disposed at one end of the first cylinder and the third coating component is disposed at the other end of the first cylinder, the liquid inside the first cylinder can flow out through the third coating component and can complete the corresponding coating operation through the third coating component.
[0043] Furthermore, the first cylinder is made of a transparent material; preferably, it is made of plastic. This structure allows the user to easily view the liquid inside the first cylinder. Furthermore, the first cylinder is provided with a first scale indicating the volume of the liquid inside, the first scale being arranged along the axial direction of the first cylinder. This structure allows the user to know the volume of the liquid inside the first cylinder by observing the first scale. Preferably, there are two first scales; the two first scales are arranged in opposite directions along the direction from one end of the first cylinder to the other. This structure allows the user to easily install the second end cap and the third application component without needing to distinguish the orientation of the first cylinder, simplifying the operation and allowing for convenient viewing of the liquid volume inside the first cylinder.
[0044] The procedure for applying alkaline gel during the determination of hydrolyzable nitrogen in soil using the apparatus of this embodiment is as follows:
[0045] (1) Alkaline adhesive container
[0046] When not in use, the two second end caps are set on the first cylinder; when alkaline adhesive needs to be filled, unscrew the second end cap on one end, pour the alkaline adhesive into the first cylinder (do not fill it too full), and then install the second end cap on the first cylinder to complete the alkaline adhesive filling.
[0047] (2) Apply as a paste
[0048] When application is required, first turn the first cylinder upside down so that the end to be applied is facing upwards. Then unscrew the second end cap that is facing upwards and store the removed second end cap for later use. Install the third application component on the first cylinder and turn the first cylinder upside down again so that the third application component is facing downwards. At this time, the alkaline adhesive can flow out through the third through hole onto the third brush. The user can then hold the first cylinder and apply the adhesive to the outer edge of the diffusion dish.
[0049] (3) Addition of alkaline adhesive and post-use cleaning
[0050] During the experiment, if there is not enough alkaline glue in the first cylinder, the second end cap at one end of the first cylinder can be opened to add alkaline glue directly. After adding, the corresponding second end cap can be closed.
[0051] If the first cylinder is not in use for a short period of time, it can be reversed so that the third coating component faces upwards, and the first cylinder can stand upright on the test bench by relying on the second end cap below it;
[0052] When the alkaline adhesive application device is not in use, reverse the first cylinder so that the third application component faces upward, remove the third application component from the first cylinder, and cover the open end of the first cylinder with the second end cap. Then store the alkaline adhesive application device. Clean the removed third application component, let it dry, and then store it.
[0053] Compared with the prior art, this application has the following advantages:
[0054] (1) With the improved structure, the alkaline adhesive flows from the inside of the first cylinder through the third through hole to the third brush, thereby completing the coating of the diffusion dish; this application can effectively simplify the process of dipping the adhesive and reduce the number of dipping times;
[0055] (2) Using this application can effectively reduce the contact time between the diffusion dish and the outside world, reduce the risk of pollution, and improve the precision of soil hydrolyzable nitrogen testing;
[0056] (3) Using this application can shorten the operation time of the experiment and improve work efficiency, especially for large-scale experiments, the operation is more time-saving and labor-saving.
[0057] Actual test results show that compared with the traditional brush-type adhesive application method, the application of this method can improve work efficiency by 2-3 times or more, significantly improving operational efficiency and demonstrating high practical value.
[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A device for applying alkaline adhesive solution during the determination of hydrolyzable nitrogen in soil, characterized in that, It includes a first cylindrical body, a second end cap, and a third coating component. The first cylindrical body is tubular, and a first connecting member is provided at each of the two ends of the first cylindrical body. The second end cap is connected to one end of the first cylinder through the first connector, and the third coating component is connected to the other end of the first cylinder through the first connector, and the liquid inside the first cylinder can flow out through the third coating component. The third coating component includes a third cover and a third brush for applying liquid. The third coating component is connected to the first cylinder through the cooperation of the third cover and the first connector. The third brush is connected to the third cover. The third cover is provided with a plurality of third through holes, and the liquid in the first cylinder can flow out to the third brush through the third through holes on the third cover.
2. The apparatus for applying alkaline gel during the determination of hydrolyzable nitrogen in soil according to claim 1, characterized in that, The first cylindrical body is made of a transparent material.
3. The apparatus for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil according to claim 1, characterized in that, The first cylinder has a circular or polygonal cross-section along a section perpendicular to the axial direction of the first cylinder.
4. The apparatus for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil according to claim 3, characterized in that, The first cylinder is circular along a cross-section perpendicular to the axial direction of the first cylinder, and the second end cap and the third cap are respectively circular caps with one end open.
5. The apparatus for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil according to claim 1, characterized in that, The first connector is a first connecting thread, the second end cap is provided with a second connecting thread that mates with the first connecting thread, and the second end cap can be connected to the first cylinder through the mating of the second connecting thread and the first connecting thread. The third cover is provided with a third connecting thread that mates with the first connecting thread, and the third cover can be connected to the first cylinder through the mating of the third connecting thread and the first connecting thread.
6. The apparatus for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil according to claim 1, characterized in that, The third through hole is evenly distributed along the circumference of the third cover.
7. The apparatus for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil according to claim 1, characterized in that, There are two second end caps; When the two second end caps are respectively installed at both ends of the first cylinder, the inside of the first cylinder can be used to hold liquid. When a second end cap is provided at one end of the first cylinder and a third coating component is provided at the other end of the first cylinder, the liquid inside the first cylinder can flow out through the third coating component and complete the corresponding coating operation through the third coating component.
8. The apparatus for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil according to any one of claims 1 to 7, characterized in that, The first cylinder is provided with a first scale indicating the volume of liquid inside the first cylinder.
9. The apparatus for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil according to claim 8, characterized in that, The first scale is set along the axial direction of the first cylinder.
10. The apparatus for applying alkaline adhesive during the determination of hydrolyzable nitrogen in soil according to claim 9, characterized in that, There are two first scales; along the direction from one end of the first cylinder to the other end, the two first scales are set in opposite directions.