An experimental bottle for determining fumigation effect of grain storage pest control agent

Abstract

The utility model discloses an experimental bottle for the determination of fumigation effect of grain storage pest control agent, including transparent bottle body, bottle lid and reagent carrier bearing piece, and the bottle mouth of bottle body is equipped with support structure, and the gas hole that can open and close is equipped on the bottle lid to control the gas environment. The utility model uses the grass as reagent carrier, replaces traditional filter paper, utilizes its high permeability and wetness, ensures that reagent is stable, and continues to evaporate. The reagent carrier bearing piece is detachable filter screen or filter cartridge connected with the bottle lid, which is convenient for placing and replacing the grass carrier, solves the problems of inconvenience, easy breakage and too fast evaporation of reagent in the traditional method. The utility model has the advantages of reasonable structure, simple operation, can effectively maintain the stability of fumigation concentration, significantly improves the accuracy and efficiency of the experiment, can be reused, and is suitable for fumigation experiment of grain storage pest control research.

Description

Technical Field

[0001] This utility model belongs to the field of experimental equipment technology, and in particular relates to an experimental bottle for determining the fumigation effect of pesticides for controlling pests in stored grain. Background Technology

[0002] In the research and development of pest control technologies for stored grains, fumigation experiments are a crucial step in screening and evaluating the effectiveness of novel pesticides. Currently, traditional Erlenmeyer flasks are commonly used as experimental apparatus in laboratory fumigation experiments against the red flour beetle. The standard operating procedure is as follows: First, check the airtightness of the Erlenmeyer flask. Then, place red flour beetles of different developmental stages (such as young larvae, older larvae, pupae, and adults) into the flask. Cut filter paper into strips of approximately 2cm × 3cm, drip pesticide until completely saturated, and usually tie a cotton thread to suspend the filter paper strips about 5cm below the flask opening. Finally, tighten the rubber stopper and place the Erlenmeyer flask under normal conditions for rearing. Observe and record the number of dead insects at different time points (12h, 24h, 36h, 48h, 60h, 72h) and calculate the cumulative mortality rate to evaluate the efficacy of the pesticide.

[0003] However, the aforementioned existing technology has certain shortcomings. First, the filter paper suspension operation is cumbersome and easily damaged. Existing methods require using cotton thread to tie the filter paper strips, which is extremely inconvenient. The cotton thread is not easy to tie securely, and it is very easy to puncture or tear the fragile filter paper during the operation, leading to experimental interruption or premature leakage of the agent, affecting the reliability of the experimental results. In addition, the agent in the existing technology evaporates too quickly, and the fumigation concentration is unstable. As a thin-layer carrier, the filter paper has limited liquid holding and slow-release capabilities. The agent evaporates too quickly on its surface, making it difficult to maintain a relatively stable and effective fumigation gas concentration in the sealed triangular flask. This may result in an excessively high concentration in the early stage of the experiment and an insufficient concentration in the later stage, making it difficult to truly reflect the lethal effect of the agent at a continuous and stable concentration, affecting the accuracy and comparability of the experimental data. Finally, the existing device is difficult to actively control the gas environment. Traditional triangular flasks are usually sealed with solid rubber stoppers, making gas exchange between the inside and outside of the flask difficult, or ordinary bottle caps cannot adjust the ventilation. This may lead to the depletion of oxygen in the flask, affecting the normal physiological state of the test insects, or it may not be able to simulate certain gas exchange scenarios in actual storage, resulting in poor controllability of the experimental environment. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an experimental bottle for measuring the fumigation effect of pesticides for controlling pests in stored grain, so as to solve the technical problems mentioned in the background art.

[0005] This utility model provides the following technical solution: An experimental bottle for determining the fumigation effect of pesticides for controlling pests in stored grain is characterized by comprising a bottle body, a bottle cap, and a pesticide carrier support. The bottle body is made of transparent material, and a support structure for supporting the drug carrier is provided on the inner side of the bottle body near the bottle mouth; The bottle cap is fitted onto the bottle opening of the bottle body. The bottle cap has a through-hole that runs vertically through the bottle. The through-hole can be opened and closed at a certain angle by rotating the opening and closing structure at the top of the bottle cap. The drug carrier is detachably mounted on the support structure and is used to support the pith carrier that has been adsorbed with fumigation agents.

[0006] Preferably, the volume of the bottle is 250ml.

[0007] Preferably, the lower end face of the bottle cap is also coaxially provided with an extension edge, the outer side of the extension edge is also provided with an inverted L-shaped rubber layer, and the outer side of the inverted L-shaped rubber layer is also coaxially provided with a plurality of annular rubber rings, the plurality of annular rubber rings being arranged sequentially at equal intervals along the vertical direction.

[0008] Preferably, one or more vent holes are provided, and the multiple vent holes are arranged at equal intervals around the axial direction of the bottle cap.

[0009] Preferably, the drug carrier is a filter screen, and the filter screen is provided with a pull ring.

[0010] Preferably, the drug carrier further includes a hollow plastic ring, the filter screen is disposed in the inner ring of the hollow plastic ring, and the inner ring of the plastic ring is provided with a snap-fit ​​groove for replaceably installing a spare filter screen.

[0011] Preferably, the drug carrier is a filter cartridge, and the upper end of the filter cartridge is detachably connected to the lower end face of the bottle cap through a connecting structure.

[0012] Preferably, the connection structure is a threaded connection, which includes an annular connecting seat coaxially disposed on the lower end face of the bottle cap and an annular connecting head coaxially disposed on the upper end of the filter cartridge. The outer side of the annular connecting seat is provided with an external thread, and the inner side of the annular connecting head is provided with an internal thread that matches the external thread.

[0013] Preferably, the connection structure is a magnetic connection, which includes a first annular magnet coaxially embedded in the lower end face of the bottle cap and a second annular magnet coaxially disposed at the upper end of the filter cartridge.

[0014] Preferably, the support structure is an annular edge coaxially disposed on the inner side of the bottle body.

[0015] Preferably, the shape of the pith carrier is that of rice.

[0016] Preferably, the opening and closing structure includes a baffle for covering the vent hole, one end of which is connected to the upper surface of the bottle cap via a rotating component.

[0017] Preferably, the rotating component includes a cylindrical head coaxially disposed in the middle of the upper end face of the bottle cap, and a rotating sleeve coaxially sleeved on the cylindrical head. The number of the baffles is the same as the number of the vent holes and is arranged in a one-to-one correspondence. The end of the baffle near the axis of the bottle cap is sequentially connected to the lower end of the outer side of the rotating sleeve.

[0018] Preferably, the outer surface of the rotating sleeve is also provided with a number of vertical anti-slip strips around its axial direction.

[0019] Preferably, the upper outer side of the cylindrical head is coaxially provided with an annular limiting strip, and the upper inner side of the rotating sleeve is coaxially provided with an annular limiting groove that cooperates with the annular limiting strip.

[0020] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention provides an experimental bottle for determining the fumigation effect of pesticides for the control of stored grain pests. By using tongcao (Tetrapanax papyriferus) as a pesticide carrier, it can quickly and fully adsorb the pesticide by utilizing its inherent high permeability and high wettability, and can achieve slow and continuous release of the pesticide. Compared with filter paper carrier, it ensures that a more stable and effective fumigation gas concentration can be maintained in the bottle throughout the entire fumigation experiment cycle, thereby improving the accuracy and repeatability of experimental data.

[0021] (2) The present invention provides an experimental bottle for determining the fumigation effect of pesticides for the control of stored grain pests. Through the designed pesticide carrier carrier, the pith carrier is placed directly on it, eliminating the tedious steps of tying cotton thread. The operation is simple and quick, avoiding the problem of carrier damage caused by improper operation, and improving the efficiency of experimental preparation.

[0022] (3) The present invention provides an experimental bottle for determining the fumigation effect of a grain pest control agent. By designing an openable and closable vent on the bottle cap, the experimenter can actively adjust the gas exchange rate inside and outside the bottle as needed. This can prevent oxygen deficiency inside the bottle and simulate fumigation scenarios under different ventilation conditions, thereby enhancing the controllability and application range of the experiment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the bottle cap structure of this utility model.

[0026] Figure 3 This utility model Figure 2 A magnified view of part A.

[0027] Figure 4 This is a schematic diagram of the air pore structure distribution of this utility model.

[0028] Figure 5 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0029] Figure 6 This utility model Figure 5 A magnified view of part B.

[0030] Figure 7 This is a schematic diagram of the annular L-shaped slot structure of this utility model.

[0031] Figure 8 This utility model Figure 7 A magnified view of part C.

[0032] Figure 9 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0033] In the diagram: 1. Bottle body; 2. Bottle cap; 21. Vent hole; 22. Extended edge; 23. Inverted L-shaped rubber layer; 24. Annular rubber ring; 31. Filter screen; 32. Pull ring; 33. Hollow plastic ring; 34. Slot; 35. Filter cartridge; 36. Annular L-shaped slot; 37. Annular clamp; 38. Buckle; 4. Support structure; 5. Pipe carrier; 61. Annular connecting seat; 62. Annular connecting head; 7. Opening and closing structure; 71. Cylindrical head; 72. Rotating sleeve; 73. Cover plate; 74. Vertical anti-slip strip; 75. Annular limiting strip; 76. Annular limiting groove. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] Example 1 This invention provides an experimental bottle for determining the fumigation effect of pesticides used to control pests in stored grain, with reference to... Figure 1-4 As shown, it includes a bottle body 1, a bottle cap 2, and a drug carrier support.

[0037] The bottle body 1 is made of transparent material, and a support structure 4 for supporting the pesticide carrier is provided on the inner side of the bottle body 1 near the bottle mouth. Firstly, the transparent bottle body 1 facilitates observation of pest behavior; the material is plastic or acrylic, making it shatterproof and reusable; the bottle body 1 has a volume of 250ml, balancing the effective concentration of the pesticide after evaporation with the activity space for the test insects; the support structure 4 is one-third the height of the bottle body 1 from the bottle mouth, providing a stable platform for the pesticide carrier. The overall structure is compact and rationally designed.

[0038] The bottle cap 2 is fitted onto the opening of the bottle body 1. The bottle cap 2 has a through-hole 21, which can be opened and closed at a certain angle by rotating the opening and closing structure 7 at the upper end of the bottle cap 2. The bottle cap 2 has a certain thickness. One or more vent holes 21 are provided, and several vent holes 21 are arranged at equal intervals around the axial direction of the bottle cap 2. The drug carrier support is detachably connected to the bottle cap 2 and the bottle body 1, facilitating the removal and insertion of the filter. This modular design makes the device easy to clean, maintain, and replace parts, extending its service life and reducing long-term operating costs. The outer diameter of the drug carrier support is smaller than the opening diameter of the bottle body 1, and the outer diameter of the drug carrier support is larger than the inner diameter of the support structure 4.

[0039] The agent carrier is detachably mounted on the support structure 4 to support the pith carrier 5, which is adsorbed with fumigation agent. The pith carrier 5 is shaped like a rice plant. The support structure 4 is a ring-shaped structure coaxially located on the inner side of the bottle body 1. Designing the pith carrier 5 in the shape of a rice plant symbolizes grain and closely aligns with the experimental objective of controlling stored grain pests. This makes the experimental device not only a tool but also a visual symbol demonstrating the close connection between scientific research and food security, enriching the teaching and demonstration value of the experiment.

[0040] The lower end face of the bottle cap 2 is coaxially provided with an extension edge 22. The outer side of the extension edge 22 is also provided with an inverted L-shaped rubber layer 23. The outer side of the inverted L-shaped rubber layer 23 is also coaxially provided with a plurality of annular rubber rings 24. The plurality of annular rubber rings 24 are arranged sequentially at equal intervals along the vertical direction. This improves the sealing performance between the bottle cap 2 and the bottle mouth of the bottle body 1.

[0041] The drug carrier is a filter screen 31, and a pull ring 32 is provided on the filter screen 31. In this embodiment, the filter screen 31 is circular, and the outer diameter of the filter screen 31 is smaller than the diameter of the bottle mouth of the bottle body 1 and larger than the inner diameter of the annular edge. The pull ring 32 facilitates the removal and insertion of the filter screen 31 from the bottle body 1.

[0042] The opening and closing structure 7 includes a cover plate 73 for covering the vent hole 21. One end of the cover plate 73 is connected to the upper end face of the bottle cap 2 via a rotating component. The rotating component includes a cylindrical head 71 coaxially disposed in the middle of the upper end face of the bottle cap 2. A rotating sleeve 72 is coaxially sleeved on the cylindrical head 71. The number of cover plates 73 is the same as the number of vent holes 21 and they are arranged in a one-to-one correspondence. The end of the cover plate 73 near the axis of the bottle cap 2 is sequentially connected to the lower end of the outer side of the rotating sleeve 72. The outer side of the rotating sleeve 72 is also provided with a plurality of vertical anti-slip strips 74 around its axial direction. The upper outer side of the cylindrical head 71 is also coaxially provided with an annular limiting strip 75. The upper inner side of the rotating sleeve 72 is coaxially provided with an annular limiting groove 76 that cooperates with the annular limiting strip 75. In the initial state, the baffle 73 seals the vent hole 21, and there is a certain friction between the rotating sleeve 72 and the cylindrical head 71. By twisting the rotating sleeve 72, the rotating sleeve 72 can rotate around the cylindrical head 71, thereby driving the baffle 73 to rotate around the cylindrical head 71, thus opening the vent hole 21 at a certain angle.

[0043] During the experiment, the rice-shaped pith carrier 5, which has been adsorbed with fumigation agent, is placed on the filter screen 31. Then, the filter screen 31 is placed on the ring edge of the bottle body 1 for support. Finally, the bottle cap 2 is put on and the ventilation hole 21 is adjusted to the appropriate opening.

[0044] Example 2 Based on Example 1, and referring to Figure 5-8 The drug carrier also includes a hollow plastic ring 33, and the filter screen 31 is disposed in the inner ring of the hollow plastic ring 33. The inner ring of the plastic ring 33 is provided with a snap-fit ​​groove for replaceably installing a spare filter screen.

[0045] As one implementation method, refer to Figure 5 and Figure 6The locking groove is a groove 34 coaxially located on the inner ring of the plastic ring 33. At this time, the pull ring 32 is positioned on the hollow plastic ring 33. The filter screen 31 is made of a material such as plastic with a certain degree of elasticity. The filter screen 31 has a certain degree of elasticity, allowing it to be bent manually and naturally return to its original shape. When the original filter screen 31 becomes damaged or contaminated and difficult to clean due to long-term use, a new filter screen can be replaced through the locking groove 34, improving the sustainable usability of the device. The outer diameter of the hollow plastic ring 33 is smaller than the bottle mouth diameter of the bottle body 1, but larger than the inner diameter of the annular edge.

[0046] As another implementation method, refer to Figure 7 and Figure 8 The snap-fit ​​groove is an annular L-shaped groove 36 coaxially located at the lower inner end of the hollow plastic ring 33. An annular clamp 37 is coaxially fitted to the inner ring of the annular L-shaped groove 36. The gap between the inner side of the annular L-shaped groove 36 and the outer side of the annular clamp 37 is sufficient to accommodate and hold the edge of the filter screen 31. Several fasteners 38 extend horizontally from the lower end of the outer side of the annular clamp 37, and these fasteners 38 are arranged at equal intervals around the axial direction of the annular clamp 37. The fasteners 38 facilitate the removal of the annular clamp 37 from the annular L-shaped groove 36. The upper end of the outer side of the annular clamp 37 has a rounded corner transition, which facilitates inserting the upper end of the annular clamp 37 into the annular L-shaped groove 36, improving assembly convenience.

[0047] Specifically, the width of the gap is 0.7 to 0.95 times the thickness of the filter screen 31, ensuring that after the annular clamp 37 is pressed in, a radial clamping force can be generated on the edge of the filter screen 31. The radial clamping force will simultaneously squeeze the edge of the filter screen 31, making it tightly fit on the horizontal shoulder of the annular L-shaped groove 36 and between the vertical shoulder of the annular L-shaped groove 36 and the annular clamp 37. This axial and radial coordinated clamping achieves a more comprehensive and reliable fixation of the filter screen 31, effectively preventing it from loosening in any direction. When the filter screen 31 is replaced, the filter screen 31 is placed in the annular L-shaped groove 36, with the area of ​​the filter screen 31 near the edge lying flat on the horizontal shoulder of the annular L-shaped groove 36. The edge of the filter screen 31 contacts the vertical shoulder of the annular L-shaped groove 36 for radial positioning. Then the annular clamp 37 is pressed in, thereby tightly pressing the edge of the filter screen 31 into the annular L-shaped groove 36.

[0048] During the experiment, the rice-shaped pith carrier 5, which has been adsorbed with fumigation agent, is placed on the filter screen 31. Then, the hollow plastic ring 33 assembled from the filter screen 31 is placed on the ring edge through the bottle mouth 1 for support. Finally, the bottle cap 2 is put on and the vent 21 is adjusted to the appropriate opening.

[0049] Example 3 refer to Figure 9 The main difference between this embodiment and Embodiment 1 lies in the structural form of the drug carrier.

[0050] In this embodiment, the drug carrier is a filter cartridge 35, the upper end of which is detachably connected to the lower end of the bottle cap 2 via a connecting structure. The filter cartridge 35 is a cylindrical shape with an open upper end, and its peripheral wall and lower end face are mesh structures.

[0051] In one embodiment, the connection structure is a threaded connection, which includes an annular connecting seat 61 coaxially disposed on the lower end face of the bottle cap 2 and an annular connecting head 62 coaxially disposed on the upper end face of the filter cartridge 35. The outer side of the annular connecting seat 61 is provided with external threads, and the inner side of the annular connecting head 62 is provided with internal threads adapted to the external threads. This allows the filter cartridge 35 to be screwed into the bottle cap 2, forming an integral whole with the bottle cap 2.

[0052] In another embodiment, the connection structure is a magnetic connection, which includes a first annular magnet coaxially embedded in the lower end face of the bottle cap 2 and a second annular magnet coaxially disposed at the upper end of the filter cartridge 35. The lower end face of the first annular magnet attracts the upper end face of the second annular magnet, so that the filter cartridge 35 is connected to the lower end of the bottle cap 2, forming an integral whole with the bottle cap 2.

[0053] This integrated design brings convenience to operation. When adding or replacing the pith carrier 4, simply remove the bottle cap 2 together with the filter cartridge 35 from the bottle body 1. After the filter cartridge 35 is separated from the bottle cap 2, the pith carrier 4 can be directly placed into the filter cartridge 33. The operation space is larger and more convenient. At the same time, the filter cartridge 33 can be completely removed from the bottle cap 2 for cleaning or replacement.

[0054] It should be noted that the outer diameter of the filter cartridge 35 is smaller than the inner diameter of the bottle mouth of the bottle body 1; and the several vent holes 21 are all located in the upper port area of ​​the filter cartridge 35.

[0055] The working principle of this utility model is as follows: the fumigant gas is slowly and stably released through the pith carrier 5, which produces a fumigation effect on the red flour beetle in the sealed or controlled ventilation space of the bottle body 1; the openable and closable vent 21 is used to maintain a suitable gas environment inside the bottle; the transparent bottle body is easy to observe; the detachable medicine carrier support is designed to facilitate the maintenance and reuse of the device.

[0056] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An experimental bottle for determining the fumigation effect of pesticides for controlling pests in stored grain, characterized in that, Includes the bottle body (1), the bottle cap (2), and the drug carrier support; The bottle body (1) is made of transparent material, and a support structure (4) for supporting the drug carrier is provided on the inner side of the bottle body (1) near the bottle mouth. The bottle cap (2) is fitted onto the bottle mouth of the bottle body (1). The bottle cap (2) has a through-hole (21) that runs vertically through the bottle. The through-hole (21) can be opened and closed at a certain angle by rotating the opening and closing structure (7) at the top of the bottle cap (2). The drug carrier is detachably mounted on the support structure (4) and is used to carry the pith carrier (5) adsorbed with fumigation agent.

2. The experimental bottle for determining the fumigation effect of pesticides for controlling pests in stored grain according to claim 1, characterized in that, The drug carrier is a filter screen (31), and a pull ring (32) is provided on the filter screen (31).

3. The experimental bottle for determining the fumigation effect of pesticides for controlling pests in stored grain according to claim 2, characterized in that, The drug carrier also includes a hollow plastic ring (33), and the filter screen (31) is disposed in the inner ring of the hollow plastic ring (33). The inner ring of the plastic ring (33) is provided with a snap-fit ​​groove for replaceably installing a spare filter screen.

4. The experimental bottle for determining the fumigation effect of pesticides for controlling pests in stored grain according to claim 1, characterized in that, The drug carrier is a filter cartridge (35), and the upper end of the filter cartridge (35) is detachably connected to the lower end of the bottle cap (2) through a connecting structure.

5. The experimental bottle for determining the fumigation effect of pesticides for controlling pests in stored grain according to claim 1, characterized in that, The support structure (4) is a ring-shaped edge coaxially located on the inner side of the bottle body (1).

6. The experimental bottle for determining the fumigation effect of pesticides for controlling pests in stored grain, as described in any one of claims 1-5, is characterized in that... The shape of the pith carrier (5) is that of rice.

7. The experimental bottle for determining the fumigation effect of pesticides for controlling pests in stored grain according to claim 1, characterized in that, The opening and closing structure (7) includes a cover plate (73) for covering the vent (21), one end of which is connected to the upper surface of the bottle cap (2) via a rotating member.

8. The experimental bottle for determining the fumigation effect of pesticides for controlling pests in stored grain according to claim 1, characterized in that, The volume of the bottle (1) is 250ml.

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