A real-time monitoring and early warning device for crop diseases and insect pests

Abstract

This utility model relates to a real-time monitoring and early warning device for crop pests and diseases. A lifting mechanism is installed on a support column to adjust the height of the detection box as needed. A solar panel at the upper end of the support column charges a storage battery, which is electrically connected to an insect-attracting lamp, an electric grid, and other electrical appliances, providing them with stable power support. A first camera captures images of the density of insects attracted by the trap. After passing through the trap's casing, the insects are either electrocuted by the electric grid, fall directly into the detection box, or are swept into the detection box by a second cleaning mechanism while still attached to the grid. A weighing sensor inside the detection box detects the weight of the insects, and a ring light source illuminates the detection camera, which further detects the type and quantity of insects. The first cleaning mechanism is activated periodically to sweep the insects from the weighing pan into a collection bag, thus achieving automated and efficient monitoring and early warning of agricultural pests.

Description

Technical Field

[0001] This utility model relates to the field of pest and disease control technology, and in particular to a real-time monitoring and early warning device for crop pests and diseases. Background Technology

[0002] In recent years, with the development of my country's national economy and the continuous improvement of people's living standards, the demand for green and organic agricultural products has been increasing. However, my country's current level of agricultural modernization is relatively low, and pest and disease control mainly relies on manual inspections to detect pests and diseases and then controlling them through pesticide spraying. Currently, my country is gradually promoting the large-scale and modern development of agriculture, and the Ministry of Agriculture has also launched research and application promotion of green pest control and pest monitoring and reporting technologies. Currently, there are many types of insecticidal lamps on the market, placed in the wild to attract various mosquitoes, insects, moths, and other pests, and then killing them through various means. However, these insecticidal lamps have relatively limited functions, only killing specific types of pests, and cannot provide systematic detection and early warning of pests. Monitoring pests and crop growth still requires a large number of personnel for on-site inspections and surveys. This not only results in high labor costs but also, due to the varying levels of pest knowledge among inspectors, leads to the failure to detect and eliminate pests in a timely manner, seriously affecting crop yield and quality. Summary of the Invention

[0003] Therefore, it is necessary to provide a real-time monitoring and early warning device for crop diseases and pests.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A real-time monitoring and early warning device for crop diseases and pests includes: a base and a support column set on the upper surface of the base. The support column is provided with a vertically arranged lifting mechanism. A detection box is installed on the lifting mechanism. A weighing pan is provided inside the detection box. A weighing sensor is provided below the weighing pan. A first cleaning mechanism is provided above the weighing pan. An insect trap is provided in the middle of the upper surface of the detection box. The insect trap is connected to the inside of the detection box. The insect trap includes a hollow shell, an electric grid and an insect-attracting lamp set inside the shell. The upper ends of the electric grid and the insect-attracting lamp are fixedly connected to the top of the shell. An annular insect-falling channel is formed between the electric grid and the insect-attracting lamp. A second cleaning mechanism is provided outside the electric grid for sweeping the insects off the electric grid. A baffle is provided at the upper end of the support column. A solar panel is provided above the baffle. The solar panel is connected to a solar controller and a battery set on the rear side wall of the support column. A first camera is provided below the baffle. The first camera is set on the same side as the insect trap.

[0005] In one embodiment, the lower end of the base is provided with a plug for fixing the base to the ground.

[0006] In one embodiment, the support column has a mounting groove with an opening on one side, and the lifting mechanism is disposed in the mounting groove.

[0007] In one embodiment, the lifting mechanism includes a lifting screw, a lifting motor, and a reducer. The reducer is disposed at the bottom of the mounting groove. The input end of the reducer is fixedly connected to the motor fixed on the base. The output end of the reducer is fixedly connected to the bottom of the lifting screw. The upper end of the lifting screw is rotatably connected to the upper end of the mounting groove.

[0008] In one embodiment, the side wall of the detection box is provided with a connecting part, and the connecting part is provided with a threaded through hole, which is threadedly connected to the lifting screw.

[0009] In one embodiment, the first cleaning mechanism includes a first lead screw, a first guide rod, a first cleaning motor, and a first brush. The first lead screw is disposed on one side of the weighing pan, the first cleaning motor is fixed on the outer wall of the detection box, and the output end of the first cleaning motor is fixedly connected to one end of the first lead screw. The first guide rod is disposed on the other side of the weighing pan, the first end of the first brush is threadedly connected to the first lead screw, and the second end of the first brush is slidably connected to the first guide rod.

[0010] In one embodiment, a collection outlet is provided on one side of the bottom of the detection box, and a collection bag is provided below the collection outlet for collecting insects swept off by the first cleaning mechanism.

[0011] In one embodiment, the detection box is further provided with a detection camera and a ring light source. The detection camera is symmetrically arranged on opposite side walls inside the detection box and is tilted downwards. The ring light source is fixed to the top of the detection box.

[0012] In one embodiment, the outer casing, the electric grid, and the insect-attracting lamp in the insect trap are coaxially arranged; the side wall of the outer casing is provided with multiple through holes.

[0013] In one embodiment, the second cleaning mechanism includes a second cleaning motor, a second lead screw, a second guide rod, and an annular brush. The second lead screw and the second guide rod are respectively disposed on both sides of the electric grid. The second cleaning motor is fixed to the upper end of the housing, and the output end of the second cleaning motor extends into the housing and is fixedly connected to the upper end of the second lead screw. The second lead screw is disposed on the other side of the electric grid. The annular brush is sleeved on the outer grid, with one end of the annular brush threadedly connected to the second lead screw and the other end slidably connected to the second guide rod.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a real-time monitoring and early warning device for crop diseases and pests. By setting a lifting mechanism on the support column, the height of the detection box can be adjusted as needed to adapt to crops at different growth stages and different field environments. A solar panel installed at the upper end of the support column, a solar controller installed on the rear side wall of the support column, and a storage battery are connected in sequence. Solar energy is absorbed through the solar panel, stored in the storage battery through the solar controller, and connected to the power grid, a ring light source, and a first camera, etc., to maintain the daily operation of the device. The first camera is located below the baffle. The camera can capture images of the density of insects attracted by the trap. After passing through the trap's casing, the insects are either electrocuted by the electric grid, fall directly into the detection box, or are swept into the detection box by the ring brush of the second cleaning mechanism while still attached to the grid. The weighing sensor inside the detection box detects the weight of the insects that have fallen in, and the ring light source provides uniform illumination for the detection camera. The detection camera further detects the type and quantity of insects. The first cleaning mechanism is activated periodically to sweep the insects on the weighing pan to the collection outlet and collect them through a collection bag, thereby achieving automated and efficient monitoring and early warning of agricultural pests. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural diagram of one embodiment;

[0017] Figure 2 This is a schematic cross-sectional view of the detection box in one embodiment;

[0018] Figure 3 This is a schematic diagram of the structure of a first cleaning mechanism according to one embodiment;

[0019] Figure 4 This is a schematic diagram of the mechanism of an insect trap according to one embodiment.

[0020] In the attached diagram, 10 is a real-time monitoring and early warning device for crop diseases and pests; 100 is a base; 110 is an insertion rod; 200 is a support column; 210 is a mounting slot; 220 is a lifting mechanism; 221 is a lifting screw; 222 is a lifting motor; 223 is a reducer; 300 is a detection box; 310 is a weighing pan; 311 is a weighing sensor; 320 is a first cleaning mechanism; 321 is a first screw; 322 is a first guide rod; and 323 is a first cleaning motor. 324. First brush; 340. Collection outlet; 350. Collection bag; 360. Detection camera; 370. Ring light source; 400. Insect trap; 410. Outer casing; 420. Electric grid; 430. Insect-attracting lamp; 440. Second cleaning mechanism; 441. Second cleaning motor; 442. Second lead screw; 443. Second guide rod; 444. Ring brush; 500. Baffle; 510. Solar panel; 520. First camera. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0022] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0023] In one embodiment, such as Figures 1 to 4As shown, a real-time monitoring and early warning device 10 for crop diseases and pests includes: a base 100 and a support column 200 disposed on the upper surface of the base 100. The support column 200 has a vertically arranged lifting mechanism 220 inside, and a detection box 300 is installed inside the lifting mechanism 220. A weighing pan 310 is disposed inside the detection box 300, and a weighing sensor 311 is disposed below the weighing pan 310. A first cleaning mechanism 320 is disposed above the weighing pan 310. An insect trap 400 is disposed in the middle of the upper surface of the detection box 300, and the insect trap 400 communicates with the interior of the detection box 300. The insect trap 400 includes a hollow outer shell 410 and a [missing information - likely a component or part] disposed on the outer shell 410. The device includes an electric grid 420 and an insect-attracting lamp 430. The upper ends of both the electric grid 420 and the insect-attracting lamp 430 are fixedly connected to the top of the outer casing 410, forming an annular insect-falling channel between them. A second cleaning mechanism 440 is provided on the outside of the electric grid 420 to sweep the insects off the grid. A baffle 500 is provided at the upper end of the support column 200. A solar panel 510 is provided above the baffle 500 and is connected to a solar controller and a battery located on the rear side wall of the support. A first camera 520 is provided below the baffle 500 and is located on the same side as the insect trap 400.

[0024] In this embodiment, by fixing the support column 200 above the base 100, the entire device can be fixed in the field. The lifting mechanism 220 inside the support column 200 can move the detection box 300 and the insect trap 400 to adapt to the monitoring needs at different heights. The insect trap 400 is provided above the detection box 300. The insect trap 400 includes a shell 410 and an electric grid 420 and an insect-attracting lamp 430 set inside the shell 410. The light emitted by the insect-attracting lamp 430 attracts pests to approach. When the pests touch the electric grid 420, they are electrocuted and killed. Then they fall into the detection box 300 through the insect falling channel. The weighing sensor 311 at the bottom of the weighing pan 310 detects the weight of the pests that fall into the detection box 300, thereby indirectly determining the number of pests.

[0025] Furthermore, the first cleaning mechanism 320 cleans the surface of the weighing pan 310 every so often, sweeping the pests on the weighing pan 310 into the collection bag 350 to avoid residual pests interfering with subsequent test results. The baffle 500 installed at the upper end of the support rod effectively prevents rainwater from entering the insect trap 400, extending the service life of the equipment. The solar panel 510 installed above the baffle 500 is connected in sequence to the solar controller and battery installed on the rear side wall of the support column 200. The solar panel 510 charges the battery, which is electrically connected to the insect-attracting lamp, the power grid, the ring light source, the detection camera, and the first camera, providing a stable power supply for the insect-attracting lamp, the power grid, the ring light source, etc., realizing the sustainable use of green energy, maintaining the daily operation needs of the equipment, and reducing the operating cost of the equipment. Other electrical appliances such as the lifting motor, the first cleaning motor, and the second cleaning motor are all connected to an external power source. The height of the first camera 520 installed below the baffle 500 is greater than the height of the insect trap 400. The first camera 520 monitors the external area of ​​the insect trap 400 in real time, capturing the insect population density before the insect trap 400 enters, thereby more comprehensively assessing the activity of pests in the field. The upper surface of the detection box 300 is also equipped with a control module and an alarm. When the weighing sensor 311 inside the detection box 300 detects that the weight of the pests exceeds the set threshold or the density of the insect population captured by the first camera 520 is too high, the control module will automatically trigger the alarm to promptly remind the user to take corresponding prevention and control measures.

[0026] To improve the stability of the device, multiple insertion rods 110 are provided below the base 100. The multiple insertion rods 110 are arranged in an array, and the lower end of the insertion rods 110 has a sharp structure. By inserting the insertion rods 110 into the ground, the fixing effect of the entire device can be effectively enhanced, preventing the equipment from tilting or collapsing due to wind or external impact.

[0027] To facilitate the installation of the lifting mechanism 220, a mounting groove 210 with an opening on one side is provided in the support column 200. The lifting mechanism 220 is installed in the mounting groove 210, and slide rails are provided on both sides of the mounting groove 210 so that the detection box 300 can maintain stable operation during the up and down movement without shaking or shifting.

[0028] Furthermore, the lifting mechanism 220 includes a reducer 223 disposed at the bottom of the mounting groove 210, a lifting motor 222 fixed to the upper end of the base 100, and a lifting screw 221 connected to the reducer 223. In this embodiment, the reducer 223 is a worm gear reducer. The input end of the reducer 223 is fixedly connected to the output end of the lifting motor 222, the bottom of the lifting screw 221 is fixedly connected to the output end of the reducer 223, and the upper end of the lifting screw 221 is rotatably connected to the top of the mounting groove 210 through a bearing. The detection box 300 is threadedly connected to the lifting screw 221. The reducer 223 is driven to rotate by the lifting motor 222, causing the lifting screw 221 to rotate, thereby driving the detection box 300 to move up and down along the lifting screw 221, thereby realizing the adjustment of the height of the detection box 300.

[0029] Furthermore, a connecting part is provided on the side wall of the testing box 300 near the support column 200, and an openable door is provided on the side wall away from the support column. The connecting part is provided with a threaded through hole that matches the lifting screw 221. The threaded through hole is threadedly connected to the lifting screw 221, and the rotation of the lifting screw 221 drives the testing box 300 to achieve stable lifting and lowering. On both sides of the connecting part, there are also sliding grooves that match the slide rail in the mounting groove 210. The sliding grooves are slidably connected to the slide rail, so that the testing box 300 can move smoothly along the slide rail during lifting and lowering, avoiding shaking or jamming, thereby improving the overall stability and reliability of operation.

[0030] To facilitate the measurement of pests, a weighing pan 310 is installed inside the detection box 300. A weighing sensor 311 is located below the weighing pan 310 and is connected to the control module. The weighing sensor 311 can detect the weight of pests falling onto the weighing pan 310 in real time. When the weight of the pests reaches a set threshold, the control module records the information and triggers an alarm to remind the user to handle the situation promptly. A first cleaning mechanism 320 is also installed above the weighing pan 310 for periodically cleaning pests from its surface. The first cleaning mechanism 320 includes a first lead screw 321 and a first guide rod 322 respectively installed on both sides of the weighing pan 310, a first brush 324 installed on the first lead screw 321 and the first guide rod 322, and a first cleaning motor 323 connected to the first lead screw 321. The first cleaning motor 323 is fixed to the outer wall of the detection box 300, and its output end passes through the side wall of the detection box 300 and is connected to the first... One end of the lead screw 321 is fixedly connected and rotated by the first cleaning motor 323; one end of the first brush 324 is threadedly connected to the first lead screw 321 and the other end is slidably connected to the first guide rod 322, so that the first brush 324 can reciprocate along the first lead screw 321 under the drive of the first cleaning motor 323; the height of the first lead screw 321 and the first guide rod 322 is greater than the height of the weighing pan 310, and the bristles of the first brush 324 are in contact with the upper surface of the weighing pan 310, thereby achieving cleaning of the surface of the weighing pan 310.

[0031] To facilitate the collection of insect carcasses, a collection outlet 340 is provided on one side of the bottom of the detection box 300. The collection outlet 340 is set perpendicular to the cleaning direction of the first brush 324, so that when the first brush 324 cleans the weighing pan 310, the insect carcasses can be pushed to the collection outlet 340 along the cleaning direction. A collection bag 350 is provided below the collection outlet 340. The opening of the collection bag 350 is fixed to the outside of the collection outlet 340 by a rope. When the first cleaning mechanism 320 cleans the insect carcasses, the carcasses slide from the collection outlet 340 into the collection bag 350 under the push of the first brush 324, making it easy to collect and process.

[0032] To further confirm the insect species, two detection cameras 360, which are industrial cameras, are symmetrically arranged on two opposite side walls of the detection box 300. Both cameras 360 are tilted downwards towards the center of the weighing pan 310, allowing them to clearly capture images of the pests on the pan. A ring light source 370 is located at the top of the interior of the detection box 300. The diameter of the ring light source 370 is larger than the diameter of the connecting hole between the detection box 300 and the insect trap 400. The insect-falling channel passes through the center of the ring light source 370, ensuring that light evenly illuminates the surface of the pests falling into the weighing pan 310, thus improving the clarity and accuracy of the images captured by the detection cameras 360. The image information captured by the detection cameras 360 is transmitted to the control module, where it is analyzed by an image recognition algorithm to identify and classify the pest species.

[0033] The insect trap 400, positioned above the detection box 300, includes a housing 410 with decreasing diameters and coaxially arranged, an electric grid 420, and an insect-attracting lamp 430. Several through holes are evenly distributed on the sidewalls surrounding the housing 410, allowing pests to enter the trap 400 through these holes. A connecting hole, larger in diameter than the electric grid 420, is provided between the bottom of the housing 410 and the top of the detection box 300. The upper ends of both the electric grid 420 and the insect-attracting lamp 430 are connected to the top of the housing 410. The insect-attracting lamp 430 is fixedly connected to the grid 420. When powered on, it emits light of a specific wavelength to attract pests to fly towards the insect trap 400. When the pests pass through the through hole and approach the insect-attracting lamp 430, they will touch the grid 420. When the pests touch the grid 420, they will be electrocuted and killed. Subsequently, most of the pests will fall directly onto the surface of the weighing pan 310 through the insect-falling channel between the grid and the insect-attracting lamp. A small number will be hung on the grid 420 and swept off by the second cleaning mechanism 440.

[0034] Further, the second cleaning mechanism 440 includes a second cleaning motor 441, a second lead screw 442, a second guide rod 443, and an annular brush 444. The second lead screw 442 is rotatably mounted on one side of the electric grid 420, and the second guide rod 443 is fixed to the other side of the electric grid 420. The annular brush 444, made of insulating material, is fitted onto the electric grid 420, with one end threadedly connected to the second lead screw and the other end slidably connected to the second guide rod 443. The second cleaning motor 441 is fixed to... The upper end of the outer casing 410, its output shaft, and even the interior of the outer casing 410 are fixedly connected to the upper end of the second lead screw 442. The operation of the second cleaning motor 441 drives the second lead screw 442 to rotate, thereby causing the annular brush 444 to move up and down along the second guide rod 443. The bristles on the inner side wall of the annular brush 444 come into contact with the electric grid 420. When the annular brush 444 moves up and down, the bristles can sweep off the insect corpses attached to the electric grid 420 and make them fall down to the surface of the weighing pan 310 along the insect falling channel.

[0035] The general workflow of this utility model is as follows: First, the device is placed in the field or an area where pests need to be monitored. The insertion rod 110 at the bottom of the base 100 is inserted into the soil to stabilize the entire device. After the power is turned on, the insect-attracting lamp 430 starts working, emitting light of a specific wavelength to attract pests. At the same time, the first camera 520 captures the process of pests entering the trap 400, obtaining information on the density and number of pests. After entering the trap 400 through the opening, the pests are attracted by the insect-attracting lamp 430, fly towards the central area, and eventually touch the electric grid 420, where they are electrocuted and killed. Most of the pests... Insects fall directly onto the surface of the weighing pan 310 along the insect-falling channel, while a small number of pests remain attached to the wire mesh and are periodically cleaned by the second cleaning mechanism 440. During the cleaning process, a ring-shaped brush 444 moves up and down along the wire mesh 420, brushing the remaining insect corpses onto the weighing pan 310. The weighing pan 310 can weigh the total weight of the fallen pests in real time. Simultaneously, a detection camera 360 captures images of the fallen pests, and by combining the weight data with image feature analysis, the type and quantity of pests are identified. When the number of pests reaches a preset threshold, the control module activates an alarm to remind the user to take timely control measures. The first cleaning mechanism 320, located on the weighing pan 310, periodically cleans the surface of the weighing pan 310 of insect corpses to prevent the accumulation of insect corpses from increasing the error in pest monitoring. The insect corpses are pushed by the first cleaning mechanism 320 to the collection outlet 340 and fall into the collection bag 350 for collection, facilitating subsequent processing and analysis.

[0036] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A real-time monitoring and early warning device for crop diseases and pests, characterized in that, include: The system comprises a base and a support column mounted on the upper surface of the base. The support column houses a vertically mounted lifting mechanism, on which a detection box is installed. Inside the detection box is a weighing pan, and below the weighing pan is a weighing sensor. Above the weighing pan is a first cleaning mechanism. An insect trap is located in the center of the upper surface of the detection box, communicating with the interior of the detection box. The insect trap includes a hollow outer shell, an electric grid and an insect-attracting lamp housed within the shell. The upper ends of both the electric grid and the insect-attracting lamp are fixedly connected to the top of the outer shell, forming a ring-shaped insect-falling channel between them. A second cleaning mechanism is located outside the electric grid to sweep insects off the grid. A baffle is located at the upper end of the support column, above which is a solar panel connected to a solar controller and a battery mounted on the rear side wall of the support column. A first camera is located below the baffle, on the same side as the insect trap.

2. The real-time monitoring and early warning device for crop diseases and pests according to claim 1, characterized in that, The lower end of the base is provided with a plug rod for fixing the base to the ground.

3. The real-time monitoring and early warning device for crop diseases and pests according to claim 1, characterized in that, The support column has an installation groove with an opening on one side, and the lifting mechanism is installed in the installation groove.

4. The real-time monitoring and early warning device for crop diseases and pests according to claim 3, characterized in that, The lifting mechanism includes a lifting screw, a lifting motor, and a reducer. The reducer is located at the bottom of the mounting slot. The input end of the reducer is fixedly connected to the motor fixed on the base. The output end of the reducer is fixedly connected to the bottom of the lifting screw. The upper end of the lifting screw is rotatably connected to the upper end of the mounting slot.

5. The real-time monitoring and early warning device for crop diseases and pests according to claim 4, characterized in that, The side wall of the testing box is provided with a connecting part, and the connecting part is provided with a threaded through hole, which is threadedly connected to the lifting screw.

6. The real-time monitoring and early warning device for crop diseases and pests according to claim 1, characterized in that, The first cleaning mechanism includes a first lead screw, a first guide rod, a first cleaning motor, and a first brush. The first lead screw is disposed on one side of the weighing pan, the first cleaning motor is fixed on the outer wall of the detection box, and the output end of the first cleaning motor is fixedly connected to one end of the first lead screw. The first guide rod is disposed on the other side of the weighing pan, the first end of the first brush is threadedly connected to the first lead screw, and the second end of the first brush is slidably connected to the first guide rod.

7. The real-time monitoring and early warning device for crop diseases and pests according to claim 1, characterized in that, The detection box has a collection outlet on one side of its bottom, and a collection bag is provided below the collection outlet for collecting insects swept off by the first cleaning mechanism.

8. The real-time monitoring and early warning device for crop diseases and pests according to claim 1, characterized in that, The testing chamber is also equipped with a testing camera and a ring light source. The testing camera is symmetrically arranged on opposite side walls inside the testing chamber and is tilted downwards. The ring light source is fixed to the top of the testing chamber.

9. The real-time monitoring and early warning device for crop diseases and pests according to claim 1, characterized in that, The outer shell, electric grid, and insect-attracting lamp of the insect trap are coaxially arranged; the side wall of the outer shell is provided with multiple through holes.

10. A real-time monitoring and early warning device for crop diseases and pests according to claim 9, characterized in that, The second cleaning mechanism includes a second cleaning motor, a second lead screw, a second guide rod, and an annular brush. The second lead screw and the second guide rod are respectively disposed on both sides of the electric grid. The second cleaning motor is fixed to the upper end of the outer casing, and the output end of the second cleaning motor extends into the outer casing and is fixedly connected to the upper end of the second lead screw. The second lead screw is disposed on the other side of the electric grid. The annular brush is sleeved on the outer grid, with one end of the annular brush threadedly connected to the second lead screw and the other end slidably connected to the second guide rod.

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