A dynamic separation and automatic counting warehouse pest killing agent effect evaluation device

Abstract

This utility model discloses a device for evaluating the effectiveness of stored pest control agents, which can dynamically separate and automatically count insects. The device includes a base with a vibrator mounted on it. A killing chamber is mounted on the vibrator via a connecting frame. The killing chamber has a live insect killing chamber inside, and an attractant box is located at the top. The bottom of the killing chamber is detachably connected to either a live insect chamber or a dead insect chamber. A live insect counting module is detachably installed in the live insect killing chamber of the live insect chamber. The live insect counting module has multiple vertically penetrating live insect channels, each with a counter. A weight counter is installed on the bottom wall of the dead insect collection chamber of the dead insect chamber, and a tray is placed on the weight counter. A funnel is detachably installed at the top of the dead insect collection chamber, and a sieve is installed on the funnel. Dead insects that pass through the sieve are guided through the funnel into the tray below. The advantages of this utility model are: improved efficiency and accuracy in evaluating the effectiveness of stored pest control agents.

Description

Technical Field

[0001] This utility model relates to the field of evaluation technology of the effect of pesticides on stored pests, and in particular to a device for evaluating the effect of pesticides on stored pests that can dynamically separate and automatically count. Background Technology

[0002] Storage pests are a group of organisms that cause serious damage to stored goods, mainly including beetles (Coleoptera), moths (Lepidoptera), and other groups. Coleoptera pests, such as the sawtooth flour beetle, tobacco beetle, rice weevil, red flour beetle, and grain borer, directly damage stored goods by boring into grains, medicinal herbs, and dried fruits. Their larvae often hide inside grains, leading to decreased seed germination rates and nutritional value. Lepidoptera pests, represented by the Indian meal borer, wheat moth, and powdery meal moth, have larvae that contaminate food (such as milk powder and grains) by spinning webs and promoting mold growth, causing clumping and mold. Other groups, such as clothes moths and bean weevils, cause borer damage to textiles and beans, respectively. Their damage manifests as direct food loss, contamination from excrement and insect bodies, transmission of pathogens, and repeated infections due to the dispersal ability of adults. In addition, pests are highly concealed (such as boring into grains or hiding in silk nests), which significantly increases the difficulty of prevention and control, and the resulting economic losses include waste of resources, destruction of stored materials and increased maintenance costs.

[0003] Pesticides for stored goods include agents such as aluminum phosphide, dichlorvos, phosphine, and diatomaceous earth. The effectiveness of pest control is evaluated by setting different concentrations and recording the number of dead insects at different times. Existing methods mostly rely on manual counting of live and dead insects. On the one hand, because some insects are small and live insects are highly mobile, counting is difficult and time-consuming. On the other hand, because insects are fragile, the sorting process may damage live insects, affecting the accuracy of the experiment. In addition, manual counting cannot achieve real-time statistics on the number of live and dead insects. Multiple sets of experiments are required to obtain dynamic change curves, and the experiment is prone to interruption. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a device for evaluating the effectiveness of stored pest control agents that can dynamically separate and automatically count, so as to improve the efficiency and accuracy of experiments evaluating the effectiveness of stored pest control agents.

[0005] This utility model is achieved through the following technical solution: A device for evaluating the effectiveness of stored pest control agents that can dynamically separate and automatically count pests includes a base, on which a vibrator is installed. The vibrator is connected to a killing chamber via a connecting frame. The inner cavity of the killing chamber forms a live insect killing chamber with an open bottom. An attractant box is provided at the top of the killing chamber. Multiple attractant holes are opened on the bottom wall of the attractant box and are connected to the live insect killing chamber. The bottom of the killing chamber is detachably connected to the live insect chamber or the dead insect chamber. The inner cavity of the live insect chamber forms a live insect killing chamber with an open top. A live insect counting module is detachably installed in the live insect killing chamber of the live insect chamber. The area below the live insect counting module in the live insect killing chamber forms a live insect release area. The live insect counting module has multiple vertically penetrating live insect channels. Each live insect channel is equipped with a counter for counting the live insects passing through the live insect channel. The inner cavity of the dead insect chamber forms a dead insect collection chamber with an open top. A weight counter is provided on the bottom wall of the dead insect collection chamber, and a tray is placed on the weight counter. A funnel is detachably installed on the upper part of the dead insect collection chamber, and a screen is provided on the funnel. Dead insects that have passed through the screen are guided through the funnel into the tray below.

[0006] As a preferred embodiment of the above-mentioned dynamically separable and automatically counting storage pest control agent effect evaluation device, the live insect counting module is a transparent module, the counter is a miniature photoelectric counter, and the transmitter and receiver of the miniature photoelectric counter are respectively arranged on both sides of the corresponding live insect channel.

[0007] As a preferred embodiment of the above-mentioned dynamically separable and automatically countable storage pest control agent effect evaluation device, a first support protrusion is provided on the inner side wall of the live insect killing chamber of the live insect chamber, and the live insect counting module is placed on the first support protrusion. The live insect counting module is supported by the first support protrusion, and the outer periphery of the live insect counting module is in contact with the inner side wall of the live insect killing chamber.

[0008] As a preferred embodiment of the above-mentioned storage pest control effect evaluation device that can dynamically separate and automatically count, the inner wall of the dead insect collection chamber of the dead insect chamber is provided with a second support protrusion, the outer edge of the funnel is attached to the second support protrusion, and the screen is placed on the funnel.

[0009] As a preferred embodiment of the above-mentioned dynamically separable and automatically countable storage pest control agent effect evaluation device, the air inlet at the top of the killing chamber is connected to an air inlet pipe, the air outlet at the top of the killing chamber is connected to an air outlet pipe, and valves are respectively provided on the air inlet pipe and the air outlet pipe.

[0010] As a preferred embodiment of the above-mentioned dynamically separable and automatically countable storage pest control agent effect evaluation device, the bottom end of the killing chamber is detachably connected to the live insect chamber or the dead insect chamber via a threaded connection.

[0011] As a preferred embodiment of the above-mentioned dynamically separable and automatically countable storage pest control agent effect evaluation device, the attractant box is formed by the top of the killing chamber being recessed downwards, and the top of the attractant box is provided with an openable and closable lid.

[0012] As a preferred embodiment of the aforementioned dynamically separable and automatically countable storage pest control agent effect evaluation device, the connecting frame is a clamp structure, which clamps the killing chamber. The connecting end of the clamp structure is connected to the vibrator, and the movable end of the clamp structure is locked in place by locking screws and locking nuts.

[0013] This utility model also discloses a method for evaluating the effectiveness of a warehouse pest control agent that can dynamically separate and automatically count pests. The evaluation method is based on the aforementioned evaluation device and is performed in the following steps: Step 1: Release live insects: First, remove the live insect counting module, put the stored pests into the live insect release area of ​​the live insect chamber, then place the live insect counting module in the live insect killing chamber, and connect the live insect chamber to the bottom of the killing chamber. Step 2, Live Insect Count: Add attractant to the attractant box. Under the influence of the attractant, live insects in the live insect release area move through the live insect channel to the live insect killing chamber in the killing chamber. The number of live insects passing through the live insect channel is counted by a counter. After a set time, the live insect chamber is removed from the bottom of the killing chamber. The total number of live insects is measured by a counter and recorded as H. Step 3: Killing live insects and dynamically separating live and dead insects: Connect the dead insect chamber to the bottom of the killing chamber, and introduce insecticide into the live insect killing chamber of the killing chamber. Start the vibrator and set its amplitude and frequency. The stored pests gradually die under the action of the insecticide. Under the vibration of the vibrator and their own gravity, the dead stored pests fall through the screen into the funnel, and then into the tray. The live stored pests continue to adhere to the inner wall of the live insect killing chamber or the screen of the killing chamber due to their activity, realizing the dynamic separation of live and dead insects. The number of dead insects on the tray is counted by a weight counter. Step 4: Mortality rate calculation: After the set time is reached, the vibrator is turned off and the weight of the dead insects is recorded as S1. Then the vibrator is restarted, and the current mortality rate D1 is calculated according to formula (1): D1=S1÷H×100% (1) Step 5: Plot the extermination effect curve: Repeat step 4 to calculate the mortality rate at different times, and plot the extermination effect curve with time as the horizontal axis and mortality rate as the vertical axis.

[0014] This invention has the following advantages over the prior art: This invention provides a device for evaluating the effectiveness of stored pest control agents with dynamic separation and automatic counting capabilities. The device includes a pest control chamber mounted on a vibrator, and a live insect chamber and a dead insect chamber that can be detachably connected to the pest control chamber. Either the live insect chamber or the dead insect chamber can be selected for installation with the pest control chamber as needed. When the live insect chamber is installed with the pest control chamber, live insects in the live insect chamber are attracted to the pest control chamber by the attractant in the attractant box at the top of the pest control chamber, and the number of live insects crawling to the pest control chamber is automatically counted by a live insect counting module installed in the live insect chamber. When the dead insect chamber is installed with the pest control chamber, the vibration of the vibrator and the insect's attraction behavior achieve non-damaging separation of live and dead insects. Simultaneously, a weight counter automatically counts the number of separated dead insects. This device solves the problems of difficulty, time consumption, damage to live insects, and low accuracy associated with manual counting, improving experimental efficiency and the accuracy of experimental results. It can obtain a dynamic change curve of the number of live / dead insects in a single operation. In addition, the live insect counting module and the live insect chamber are detachably connected, and the screen and the dead insect chamber are detachably connected. The corresponding specifications of live insect counting module and screen can be selected according to the different sizes of stored pests, which has good versatility. Attached Figure Description

[0015] Figure 1 This is a front view of the killing chamber and base mounting structure of the evaluation device of this utility model.

[0016] Figure 2 yes Figure 1 Top view.

[0017] Figure 3 This is a schematic diagram of the internal structure of the live insect chamber in the evaluation device of this utility model.

[0018] Figure 4 yes Figure 3 Top view.

[0019] Figure 5 This is a schematic diagram of the internal structure of the dead insect chamber in the evaluation device of this utility model.

[0020] Figure 6 yes Figure 5 Top view.

[0021] Figure 7 This is a graph showing the extermination effect of Example 1.

[0022] Figure 8 This is a graph showing the extermination effect of Example 2.

[0023] The diagram is labeled as follows: 1. Base; 2. Support column; 3. Vibrator; 4. Killing chamber; 5. Clamping structure; 6. Locking screw; 7. Attractant box; 8. Box lid; 9. Air inlet pipe; 10. Air outlet pipe; 11. Valve; 12. Live insect chamber; 13. Dead insect chamber; 14. Live insect counting module; 15. First support protrusion; 16. Live insect release area; 17. Live insect channel; 18. Launching end; 19. Receiving end; 20. Weight counter; 21. Tray; 22. Funnel; 23. Screen; 24. Second support protrusion. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0025] See Figures 1 to 6 This embodiment discloses a device for evaluating the effectiveness of stored pest control agents that can dynamically separate and automatically count pesticides. It includes a base 1 with a vertically extending support column 2. A vibrator 3 is mounted on the support column 2. The vibrator 3 is connected to the support column 2 via screws. The amplitude of the vibrator 3 is 0-10 mm, and the vibration frequency is 0-50 Hz. A pest control chamber 4 is mounted on the vibrator 3 via a connecting frame. The connecting frame can be designed as a clamping structure 5 to hold the pest control chamber 4. The connecting end of the clamping structure 5 is connected to the vibrating end of the vibrator 3, and the movable end of the clamping structure 5 is locked in place by a locking screw 6 and a locking nut. The killing chamber 4 has an open-bottomed chamber for killing live insects. An attractant box 7 is located on the top of the killing chamber 4, formed by a downward indentation at the top. The attractant box 7 has an openable lid 8 on its top. Multiple attractant holes, each no larger than 1 mm in diameter, are located on the bottom wall of the attractant box 7 and are connected to the live insect killing chamber. An air inlet 9 is connected to the air inlet at the top of the killing chamber 4, and an air outlet 10 is connected to the air outlet at the top of the killing chamber 4. Valves 11 are installed on both the air inlet 9 and the air outlet 10. The bottom of the killing chamber 4 is detachably connected to either the live insect chamber 12 or the dead insect chamber 13. In this embodiment, the detachable connection between the bottom of the killing chamber 4 and the live insect chamber 12 or the dead insect chamber 13 is achieved through a threaded connection.

[0026] The inner cavity of the live insect chamber 12 forms a live insect killing chamber with an open top. A live insect counting module 14 is detachably installed in the live insect killing chamber of the live insect chamber 12. The live insect counting module 14 is made of transparent acrylic material. A first support protrusion 15 is provided on the inner sidewall of the live insect killing chamber of the live insect chamber 12. The first support protrusion 15 is a raised ring set on the inner sidewall of the live insect killing chamber. The live insect counting module 14 is placed on the first support protrusion 15, which supports the live insect counting module 14. The outer periphery of the live insect counting module 14 is in close contact with the inner sidewall of the live insect killing chamber. The area below the live insect counting module 14 in the live insect killing chamber forms a live insect release area 16. Multiple vertically penetrating live insect channels 17 are opened on the live insect counting module 14. Each live insect channel 17 is equipped with a counter for counting the live insects passing through the live insect channel 17. The live insect counting module 14 is a transparent module. The counter can be a miniature photoelectric counter, with the transmitter 18 and receiver 19 of the miniature photoelectric counter positioned on both sides of the corresponding live insect channel 17.

[0027] The inner cavity of the dead insect chamber 13 forms a dead insect collection chamber with an open top. A weight counter 20 is provided on the bottom wall of the dead insect collection chamber 13, and a tray 21 is placed on the weight counter 20. A funnel 22 is detachably provided on the upper part of the dead insect collection chamber 13. The diameter of the discharge hole of the funnel 22 is 20mm. A screen 23 is provided on the funnel 22. A second support protrusion 24 is provided on the inner side wall of the dead insect collection chamber 13. The outer edge of the funnel 22 is attached to the second support protrusion 24. The screen 23 is placed on the funnel 22. The second support protrusion 24 is a ring provided on the inner side wall of the dead insect collection chamber. The dead insects that have passed through the screen 23 are guided into the tray 21 below through the funnel 22.

[0028] Among them, the killing chamber 4, the live insect chamber 12, and the dead insect chamber 13 can be made of transparent glass.

[0029] In this embodiment, the live insect counting module 14 can be removed from the live insect killing chamber of the live insect chamber 12. Various live insect counting modules 14 with different aperture sizes can be pre-designed for different stored pest sizes, ensuring that only one insect can pass through each live insect channel 17 at a time. During use, the corresponding size of the live insect counting module 14 can be selected and placed in the live insect chamber 12 according to the size of the stored pest, making the device adaptable to various sizes of stored pests. Simultaneously, in the dead insect chamber 13, the screen 23 is placed on the funnel 22 and can be disassembled and replaced according to different stored pest sizes, ensuring that dead insects fall through the screen 23 into the tray 21 below, while live insects can cling to the screen 23. Depending on the characteristics of the stored pests, highly attractive substances such as food attractants and slow-release pheromones can be flexibly added to the attractant box 7 to guide live insects through the live insect channel 17 into the killing chamber 4. Furthermore, many components are designed with detachable connections, making them easy to disassemble and clean.

[0030] This embodiment also discloses a method for evaluating the effectiveness of stored pest control agents that can be dynamically separated and automatically counted. This evaluation method is based on the aforementioned evaluation device and is performed in the following steps: Step 1: Release live insects: First, remove the live insect counting module 14, put the stored pests into the live insect release area 16 of the live insect chamber 12, then place the live insect counting module 14 in the live insect killing chamber, and connect the live insect chamber 12 to the bottom of the killing chamber 4. Step 2, Live Insect Count: Open the lid 8 of the attractant box 7, put the attractant into the attractant box 7, and then close the lid 8. Under the action of the attractant, the live insects in the live insect release area 16 move through the live insect channel 17 to the live insect killing chamber of the killing chamber 4. The number of live insects passing through the live insect channel 17 is counted by a counter. After a set time, such as 2 hours later, the live insect chamber 12 is removed from the bottom of the killing chamber 4, and the total number of live insects is measured by a counter and recorded as H. Step 3: Killing live insects and dynamically separating live and dead insects: Connect the dead insect chamber 13 to the bottom of the killing chamber 4, open the two valves 11, and introduce a certain concentration of insecticide into the live insect killing chamber of the killing chamber 4 through the air inlet pipe 9. Then close the two valves 11, start the vibrator 3 and set the amplitude and frequency of the vibrator 3. The stored pests gradually die under the action of the insecticide. Under the vibration of the vibrator 3 and their own gravity, the dead stored pests fall through the screen 23 into the funnel 22, and then into the tray 21. The live stored pests continue to adhere to the inner wall of the live insect killing chamber of the killing chamber 4 or the screen 23 due to their activity, realizing the dynamic separation of live and dead insects. The number of dead insects on the tray 21 is counted by the weight counter 20. Step 4: Mortality rate calculation: After the set time is reached, turn off vibrator 3 and record the weight of the dead insects as S1. Then restart vibrator 3 and calculate the current mortality rate D1 according to formula (1): D1=S1÷H×100% (1) Step 5: Plot the extermination effect curve: Repeat step 4 to calculate the mortality rate at different times until all live insects die or the experiment ends. Plot the extermination effect curve with time as the x-axis and mortality rate as the y-axis.

[0031] The applicant used the aforementioned evaluation device and method to evaluate the effect of nitrogen gas on killing adult tobacco beetles. During the evaluation process, in order to adapt to the body shape of adult tobacco beetles, a live insect counting module 14 with a hole diameter of 1.5 mm and a sieve 23 with a hole diameter of 1.5 mm were selected in the live insect channel 17. A slow-release pheromone for tobacco beetles was placed in the attractant box 7 to attract live insects. The vibration amplitude of the vibrator 3 was set to 5 mm and the frequency to 18 Hz. The mortality rate was counted every 1 day.

[0032] Example 1 The ambient temperature was 22℃. Nitrogen gas with a concentration of 99% was used as the insecticide. The adult tobacco beetles were killed according to the evaluation method described above. The total number of live beetles, H=124, was obtained using a counter. All adults died by day 8. The mortality rates D1 for 8 days, calculated using formula (1), were 8.1%, 17.7%, 49.2%, 73.4%, 80.7%, 87.9%, 95.2%, and 100.0%, respectively. The killing effect curves are shown below. Figure 7 .

[0033] Example 2 The ambient temperature was 26℃. Nitrogen gas with a concentration of 99% was used as the insecticide. The adult tobacco beetles were killed according to the evaluation method described above. The total number of live beetles, H=155, was obtained using a counter. All adults died by day 7. The mortality rates D1 for the 7 days were calculated using formula (1): 36.1%, 61.9%, 77.4%, 84.5%, 91.0%, 98.1%, and 100.0%, respectively. The killing effect curves are shown below. Figure 8 .

[0034] 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 dynamic separation and automatic counting of warehouse pest killing agent effect evaluation device, comprising a base, characterized in that: A vibrator is installed on the base, and a killing chamber is installed on the vibrator through a connecting frame. The inner cavity of the killing chamber forms a live insect killing chamber with an open bottom. An attractant box is provided on the top of the killing chamber. Multiple attractant holes are opened on the bottom wall of the attractant box, and the multiple attractant holes are connected to the live insect killing chamber. The bottom of the killing chamber is detachably connected to the live insect chamber or the dead insect chamber. The inner cavity of the live insect chamber forms a live insect killing chamber with an open top. A live insect counting module is detachably installed in the live insect killing chamber of the live insect chamber. The area below the live insect counting module in the live insect killing chamber forms a live insect release area. The live insect counting module has multiple vertically penetrating live insect channels. Each live insect channel is equipped with a counter for counting the live insects passing through the live insect channel. The inner cavity of the dead insect chamber forms a dead insect collection chamber with an open top. A weight counter is provided on the bottom wall of the dead insect collection chamber, and a tray is placed on the weight counter. A funnel is detachably installed on the upper part of the dead insect collection chamber, and a screen is provided on the funnel. Dead insects that have passed through the screen are guided through the funnel into the tray below.

2. The storage pest control effect evaluation device with dynamic separation and automatic counting as described in claim 1, characterized in that: The live insect counting module is a transparent module, and the counter is a miniature photoelectric counter. The transmitter and receiver of the miniature photoelectric counter are arranged on both sides of the corresponding live insect channel.

3. The warehouse pest control effect evaluation device with dynamic separation and automatic counting as described in claim 1, characterized in that: The live insect chamber has a first support protrusion on the inner wall of the live insect killing chamber. The live insect counting module is placed on the first support protrusion and is supported by the first support protrusion. The outer periphery of the live insect counting module is in contact with the inner wall of the live insect killing chamber.

4. The warehouse pest control effect evaluation device with dynamic separation and automatic counting as described in claim 1, characterized in that: The dead insect collection chamber of the dead insect chamber has a second support protrusion on its inner side wall. The outer edge of the funnel is attached to the second support protrusion, and the screen is placed on the funnel.

5. The warehouse pest control effect evaluation device with dynamic separation and automatic counting as described in claim 1, characterized in that: The air inlet at the top of the extermination chamber is connected to an air inlet pipe, and the air outlet at the top of the extermination chamber is connected to an air outlet pipe. Valves are installed on the air inlet pipe and the air outlet pipe respectively.

6. The warehouse pest control effect evaluation device with dynamic separation and automatic counting as described in claim 1, characterized in that: The bottom of the killing chamber is detachably connected to the live insect chamber or the dead insect chamber via a threaded connection.

7. The warehouse pest control effect evaluation device with dynamic separation and automatic counting as described in claim 1, characterized in that: The attractant box is formed by a downward indentation at the top of the killing chamber, and the top of the attractant box has an openable and closable lid.

8. The storage pest control effect evaluation device with dynamic separation and automatic counting as described in claim 1, characterized in that: The connecting frame is a clamp structure, which clamps the killing chamber. The connecting end of the clamp structure is connected to the vibrator, and the movable end of the clamp structure is locked in place by locking screws and locking nuts.

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