Water leech field trapping device

Abstract

The utility model relates to leech trapping equipment technical field, concretely is leech field trapping device, including upper and lower two section structure, upper and lower two section structure are respectively upper section cylinder and lower section cylinder, the side wall of lower section cylinder is provided with first filter screen, the mesh size of first filter screen is less than 0.1mm, leech can not pass first filter screen, the side wall of upper section cylinder is provided with second filter screen, the mesh size of second filter screen is greater than 5mm, and leech can freely pass second filter screen and enter the inside of upper section cylinder, the inside installation of lower section cylinder has decoy placing part. In this leech field trapping device, the targeted structure design is through, and the traditional capture pain point is solved efficiently, and the technical effect is remarkable. In the capture efficiency and selectivity, the upper and lower section cylinder cooperates different specifications filter screen, and the first filter screen of lower section only lets the decoy smell flow, and blocks leech.

Description

Technical Field

[0001] This utility model relates to the technical field of leech capture equipment, specifically to a leech field trapping device. Background Technology

[0002] Leeches, also known as bloodsuckers, are a biological resource with both medicinal and ecological research value, and their application demand in modern medicine and biology continues to grow. In the medicinal field, hirudin, contained in leech saliva, has a potent anticoagulant effect and can be used to treat thrombotic diseases and promote wound healing after surgery; it is also an important raw material for the preparation of anticoagulant drugs. In the field of ecological research, the population distribution and changes in the number of leeches can serve as important indicators reflecting the quality of the aquatic ecological environment, and their capture and monitoring are crucial for ecological environment assessment. With the expanding demand for leeches, the need for capturing wild leeches is becoming increasingly urgent. However, current mainstream methods for capturing wild leeches still have many technical shortcomings, making it difficult to meet the needs for efficient, accurate, and sustainable capture. Traditional capture methods are inefficient and have poor selectivity: Current wild capture methods mostly rely on manual fishing (such as dragging with fishing nets or picking up with hand tools) or simple trapping devices (such as placing open containers filled with bait). Manual fishing is not only time-consuming and labor-intensive, but also greatly affected by the aquatic environment (such as turbidity and water depth), resulting in extremely low capture efficiency. Simple trapping devices lack effective structural design and passively capture leeches only by relying on the attraction of bait, which cannot guide leeches in a specific direction. At the same time, it is easy for other aquatic organisms (such as small fish and shrimp) to accidentally enter the water, resulting in the accidental capture of non-target organisms, affecting the ecological balance, and increasing the workload of subsequent leech sorting. Insufficient bait protection and continuous trapping capacity: Leech bait is mostly animal viscera, blood and other easily decomposable substances. In existing trapping devices, the bait is directly exposed in the water. On the one hand, it is easily washed away by the water flow, which shortens the effective time of the bait and requires frequent replenishment, increasing operating costs. On the other hand, the residue produced during the decomposition of the bait can easily clog the pores of the device or attract the growth of microorganisms, which not only reduces the attraction to leeches, but may also pollute the aquatic environment and further affect the capture effect. Lack of effective monitoring and cleaning mechanisms: Traditional trapping devices cannot monitor leech entry signals in real time, requiring users to frequently retrieve and inspect the devices. At the same time, when the devices are placed in outdoor water bodies for extended periods, the side wall pores are easily blocked by algae, silt, and aquatic plant debris. This is especially true for structures that rely on pores for leech entry and exit; blockage will directly block the leech entry channel, causing the device to malfunction. Existing devices lack convenient cleaning mechanisms, requiring complete disassembly and cleaning, which is cumbersome and affects continuous capture. Utility Model Content

[0003] The purpose of this invention is to provide a leech trapping device to solve the problems mentioned in the background art, such as that manual trapping is not only time-consuming and labor-intensive, but also greatly affected by the aquatic environment and has extremely low capture efficiency; simple trapping devices lack effective structural design, and only passively capture leeches by the attraction of bait, which cannot guide leeches in a specific direction. At the same time, it is easy for other aquatic organisms in the water to accidentally enter, resulting in the accidental capture of non-target organisms, affecting the balance of the ecological environment, and also increasing the workload of subsequent leech sorting.

[0004] To achieve the above objectives, this utility model provides a leech trapping device, comprising an upper and a lower cylindrical section. The lower cylindrical section has a first filter screen on its side wall, with a mesh size of less than 0.1 mm, preventing leeches from passing through. The upper cylindrical section has a second filter screen on its side wall, with a mesh size of more than 5 mm, allowing leeches to freely pass through and enter the upper cylindrical section. The lower cylindrical section contains a bait placement component.

[0005] This setup achieves functional zoning by dividing the device into upper and lower sections: the first filter on the side wall of the lower section only allows water and scent molecules emitted by the bait to pass through, while the small mesh size prevents leeches from entering; the second filter on the side wall of the upper section has a mesh size adapted to the leech's body shape, allowing leeches to enter freely; at the same time, the bait placement component is installed inside the lower section, using the scent of the bait to diffuse upwards from the lower section, guiding the leeches to move towards the accessible upper section, forming a directional capture path of "scent guidance + physical barrier".

[0006] Preferably, the height of the lower section of the cylinder accounts for one-third of the total height of the leech field trapping device, and the height of the upper section of the cylinder accounts for two-thirds of the total height of the leech field trapping device.

[0007] This design limits the height of the lower section of the cylinder to one-third of the total height and the upper section to two-thirds. It is based on the adaptation design of "bait scent diffusion range" and "leech activity space": the lower section is lower, which can shorten the distance that the bait scent diffuses upward to the upper section, ensuring that the scent concentration can effectively attract surrounding leeches; the upper section is higher, which can provide ample activity space for the leeches that enter, avoiding the leeches from squeezing each other and dying due to lack of oxygen due to the small space, while also accommodating more leeches and increasing the catch per batch.

[0008] Preferably, an upper connecting ring is installed at the top of the lower section of the cylinder, and a lower connecting ring is installed at the bottom of the upper section of the cylinder, with the lower connecting ring and the upper connecting ring being threaded together.

[0009] This device features an upper connecting ring at the top of the lower section and a lower connecting ring at the bottom of the upper section, connected by threads. The removability and sealing of the threaded connection allow for flexible assembly and disassembly of the upper and lower sections: when it is necessary to replenish bait or clean the lower section, the upper and lower sections can be disassembled by rotation; after assembly, the threaded connection ensures that water will not seep in large quantities through the connection gaps, maintaining the stability of the internal functional zones of the device.

[0010] Preferably, the top of the upper section of the cylinder is detachably fitted with a top cover, and the surface of the top cover is provided with wide mesh holes.

[0011] This feature includes a detachable top cover on the upper section of the cylinder, with wide mesh openings on the cover surface. The detachable design makes it easy to open the top cover and collect the captured leeches. The wide mesh openings ensure the flow of water between the inside and outside of the upper section of the cylinder, maintaining water exchange and providing sufficient oxygen for the leeches. This prevents the leeches from dying due to oxygen deficiency in the water inside the upper section of the cylinder. At the same time, the wide mesh openings also prevent debris from falling into the upper section of the cylinder and polluting the internal environment.

[0012] Preferably, a cleaning module is installed on the inner side of the upper section of the cylinder. The cleaning module includes a vertical water spray pipe, and several nozzles are evenly installed on the side of the water spray pipe. A water supply pipe is connected to the top of the water spray pipe, and a water pump is installed on the water supply pipe. The water pump supplies water to the water spray pipe through the water supply pipe and sprays it outward through the nozzles to clean the second filter screen of the upper section of the cylinder.

[0013] This feature involves installing a cleaning module inside the upper section of the cylinder. It consists of a vertical water spray pipe, several nozzles, a water supply pipe, and a water pump. The water pump delivers water to the water spray pipe through the water supply pipe, and then the nozzles spray high-pressure water evenly. The impact force of the water flow is used to blow away the second filter screen of the upper section of the cylinder, removing algae, silt, aquatic plant debris, and other blockages attached to the filter screen, restoring the filter screen's permeability.

[0014] Preferably, the bait placement component includes a cone-shaped protective net, with the bait placed inside the protective net. The top of the protective net has an opening, and the bottom of the protective net is fitted with a sealing plate, which is threadedly connected to the bottom of the lower section of the cylinder.

[0015] This design incorporates a cone-shaped protective net for the bait placement component. The bait is placed inside the net, with an opening at the top and a threaded connection at the bottom to the lower section of the cylinder via a sealing plate. The mesh of the cone-shaped protective net allows the bait's scent to diffuse while preventing leeches and large debris from entering and contacting the bait. The top opening facilitates bait placement, and the threaded connection of the bottom sealing plate allows the bait placement component to be disassembled, making it easy to replace the bait and clean any residue inside the protective net.

[0016] Preferably, a monitoring module is installed on the inner side of the top cover. The monitoring module includes an infrared sensor, a microprocessor, and a wireless communication unit. The infrared sensor is used to detect the leech entry signal in the upper section of the cylinder and transmit the signal to the microprocessor. After the microprocessor counts the data, it sends the data to the terminal device through the wireless communication unit.

[0017] This feature involves installing a monitoring module inside the top cover, consisting of an infrared sensor, a microprocessor, and a wireless communication unit. The infrared sensor detects the infrared signals of leeches, identifies leeches entering the upper section of the cylinder, and transmits the signals to the microprocessor. The microprocessor counts the number of leeches entering the cylinder and sends the data to the terminal device via the wireless communication unit. When the count reaches a preset threshold, the microprocessor triggers an alarm command to remind the user to collect the leeches in time.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This leech trapping device effectively addresses the pain points of traditional trapping methods through targeted structural design, resulting in significant technological benefits. In terms of capture efficiency and selectivity, the upper and lower sections of the cylinder are equipped with filters of different sizes. The first filter in the lower section allows the bait's scent to circulate while blocking the leeches, while the second filter in the upper section provides a dedicated channel for the leeches, enabling directional guidance and significantly increasing the capture rate per unit time. Simultaneously, it avoids the accidental capture of non-target organisms such as small fish and shrimp, reducing ecological disturbance and sorting workload. In terms of bait utilization, the bait placement component, consisting of a cone-shaped protective net and a sealing plate, can continuously release bait odors, preventing the bait from being washed away by water flow or eaten by organisms, thus reducing the frequency and cost of replenishment; it can also intercept bait residue, avoiding clogging of the filter and water pollution, and ensuring continuous trapping effect. Regarding the monitoring and cleaning mechanism, the monitoring module inside the top cover uses infrared sensors to count leech signals in real time, remotely transmits entry signals, and alarms when the number reaches the standard, eliminating the need for frequent retrieval and inspection; the cleaning module in the upper section can clean the blockage of the second filter screen online with high-pressure water flow, without the need for overall disassembly, ensuring long-term stable operation of the device. The structural flexibility and scene adaptability have also been optimized. The upper and lower sections of the cylinder are connected by threads, and the bottom of the bait component is detachable, so there is no need to remove the whole device when replenishing the bait. The design with the lower section accounting for 1 / 3 of the total height and the upper section accounting for 2 / 3, combined with the top cover with replaceable mesh, can adapt to different environments such as shallow water areas and deep water areas, meet the diverse needs of large-scale collection and ecological monitoring, and achieve efficient, accurate, intelligent and ecological capture of targets. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the bait placement component in this utility model; Figure 3 This is a schematic diagram of the cleaning module in this utility model; The meanings of the labels in the diagram are as follows: 1. Lower section cylinder; 11. Upper connecting ring; 2. Upper section cylinder; 21. Lower connecting ring; 3. Bait placement component; 31. Protective net; 32. Sealing plate; 33. Opening; 4. Top cover; 5. Monitoring module; 6. Cleaning module; 61. Water spray pipe; 62. Nozzle; 63. Water supply pipe; 64. Water pump. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides a leech trapping device for the wild, such as Figures 1-3 As shown, the structure includes two sections: an upper cylindrical body 2 and a lower cylindrical body 1. The lower cylindrical body 1 has a first filter screen on its side wall with a mesh size of less than 0.1 mm, preventing leeches from passing through. The upper cylindrical body 2 has a second filter screen on its side wall with a mesh size of more than 5 mm, allowing leeches to freely pass through and enter the upper cylindrical body 2. The lower cylindrical body 1 has a bait placement component 3 installed inside.

[0022] By dividing the device into an upper section 2 and a lower section 1, functional zoning is achieved: the first filter screen on the side wall of the lower section 1 has a mesh size of <0.1mm, allowing only water and odor molecules emitted by the bait to pass through, but the small mesh size prevents leeches from entering; the second filter screen on the side wall of the upper section 2 has a mesh size of >5mm, which is adapted to the body size of the leeches, allowing them to enter freely; at the same time, the bait placement component 3 is installed inside the lower section 1, using the odor of the bait to diffuse upwards from the lower section 1, guiding the leeches to move towards the accessible upper section 2, forming a directional capture path of "odor guidance + physical barrier". This method enables targeted capture of leeches, preventing them from entering the lower section of the cylinder 1 and coming into contact with the bait inside the bait placement component 3, thus avoiding damage. It significantly increases the probability of leeches entering the upper section of the cylinder 2, thereby improving capture efficiency. The first filter on the lower section of the cylinder 1 also prevents impurities from entering the lower section of the cylinder 1 and contaminating the bait, ensuring that the bait continues to function. At the same time, the second filter on the upper section of the cylinder 2 clearly defines the leech entry channel, reducing the chance of non-target small organisms accidentally entering the upper section of the cylinder 2 and reducing the difficulty of subsequent sorting.

[0023] In this embodiment, the height of the lower section of the cylinder 1 accounts for one-third of the total height of the leech field trapping device, and the height of the upper section of the cylinder 2 accounts for two-thirds of the total height of the leech field trapping device.

[0024] The lower section 1 is limited to one-third of the total height, and the upper section 2 is limited to two-thirds. This design is based on the compatibility between the "spray scent diffusion range" and the "leech activity space": the lower section 1 is shorter, which shortens the distance that the scent of the bait in the bait placement component 3 diffuses upward to the upper section 2, ensuring that the scent concentration can effectively attract surrounding leeches; the upper section 2 is taller, which can provide ample activity space for the leeches that enter, avoiding the leeches from squeezing each other and dying due to lack of oxygen caused by the small space, and at the same time can accommodate more leeches, increasing the single catch. The optimized internal space allocation of the device ensures efficient diffusion of the bait scent to attract leeches into the upper section 2, while also providing a good living environment for the leeches captured in the upper section 2, reducing the mortality rate of captured leeches. The larger space of the upper section 2 can increase the single capture capacity, reduce the number of times the device needs to be retrieved, reduce labor costs, and improve the convenience of field operations.

[0025] Specifically, an upper connecting ring 11 is installed at the top of the lower section cylinder 1, and a lower connecting ring 21 is installed at the bottom of the upper section cylinder 2. The lower connecting ring 21 and the upper connecting ring 11 are connected by threads.

[0026] An upper connecting ring 11 is provided at the top of the lower section cylinder 1, and a lower connecting ring 21 is provided at the bottom of the upper section cylinder 2. They are connected by threads. The removability and sealing of the threaded connection allow for flexible assembly and disassembly of the upper section cylinder 2 and the lower section cylinder 1. When it is necessary to replenish the bait in the bait placement component 3 or clean the lower section cylinder 1, the upper connecting ring 11 and the lower connecting ring 21 can be rotated to separate the upper and lower sections of the cylinder. After assembly, the threaded connection between the upper connecting ring 11 and the lower connecting ring 21 can ensure that water will not seep in large quantities from the connection gap, maintaining the stability of the internal functional areas of the device. The upper section 2 and the lower section 1 can be separated without disassembling the entire device, making operation convenient. When replenishing bait or cleaning the lower section 1, there is no need to remove the entire device from the water, avoiding disturbing leeches that have not entered the upper section 2 and reducing the impact on subsequent capture. The threaded connection between the upper ring 11 and the lower ring 21 ensures a tight seal and prevents abnormal water flow from damaging the functional partitions of the upper and lower sections, ensuring stable operation of the device. At the same time, the disassembled structure also facilitates the transportation and storage of the device.

[0027] Furthermore, a top cover 4 is detachably installed on the top of the upper section cylinder 2, and the surface of the top cover 4 is provided with wide mesh holes.

[0028] A top cover 4 is detachably installed on the top of the upper section cylinder 2, and a wide mesh is provided on the surface of the top cover 4. The detachable design of the top cover 4 makes it easy to open the top cover 4 to collect the leeches captured inside the upper section cylinder 2. The wide mesh on the surface of the top cover 4 can ensure the circulation between the water inside and outside the upper section cylinder 2, maintain water exchange, provide sufficient oxygen for the leeches inside the upper section cylinder 2, and prevent the leeches from dying due to lack of oxygen in the water inside the upper section cylinder 2. At the same time, the wide mesh can also prevent debris from falling into the upper section cylinder 2 and polluting the internal environment. The device allows for convenient and quick collection of leeches from the upper section 2, reducing damage to the leeches during collection. The wide mesh of the top cover 4 enables water circulation, ensuring the survival time of the leeches captured in the upper section 2 and improving the quality of the captured leeches. The detachable top cover 4 also facilitates maintenance of the lower section 1, further enhancing the flexibility of the device operation.

[0029] Furthermore, a cleaning module 6 is installed on the inner side of the upper section cylinder 2. The cleaning module 6 includes a vertical water spray pipe 61. Several nozzles 62 are evenly installed on the side of the water spray pipe 61. A water supply pipe 63 is connected to the top of the water spray pipe 61. A water pump 64 is installed on the water supply pipe 63. The water pump 64 inputs water into the water spray pipe 61 through the water supply pipe 63 and sprays it outward through the nozzles 62 to clean the second filter screen of the upper section cylinder 2.

[0030] A cleaning module 6 is installed inside the upper section of the cylinder 2. The cleaning module 6 includes a vertical water spray pipe 61, several nozzles 62 evenly installed on the side of the water spray pipe 61, a water supply pipe 63 connected to the top of the water spray pipe 61, and a water pump 64 installed on the water supply pipe 63. The water supply pipe 63 and the water pump 64 are generally externally connected. When in use, the trapping device that needs to be cleaned is placed on the cleaning fixture, and then the water supply pipe 63 is connected to the water spray pipe 61 on site, so that the water pump 64 delivers water to the water spray pipe 61 through the water supply pipe 63, and then sprays high-pressure water evenly through the nozzles 62. The impact force of the water flow is used to blow and clean the second filter screen of the upper section of the cylinder 2, remove the algae, mud, aquatic plant residues and other blockages attached to the filter screen, and restore the permeability of the filter screen. The second filter screen on the upper cylinder 2 can be cleaned without disassembling the device, solving the cumbersome problem of traditional devices requiring complete disassembly and cleaning of the filter screen. With the cooperation of components such as the water spray pipe 61 and nozzle 62 of the cleaning module 6, the cleaning time per cleaning is greatly shortened, improving maintenance efficiency. It also avoids the second filter screen from becoming clogged, preventing leeches from entering the upper cylinder 2, ensuring continuous and stable capture by the device, reducing capture interruptions caused by filter screen clogging, and improving the reliability of the device for long-term use in the field.

[0031] Furthermore, the bait placement component 3 includes a cone-shaped protective net 31, with bait placed inside the protective net 31. The top of the protective net 31 has an opening 33, and the bottom of the protective net 31 is fitted with a sealing plate 32, which is threadedly connected to the bottom of the lower section cylinder 1.

[0032] The bait placement component 3 is designed as a cone-shaped protective net 31. The bait is placed inside the protective net 31. The top of the protective net 31 has an opening 33, and the bottom is threadedly connected to the bottom of the lower section cylinder 1 through a sealing plate 32. The mesh of the cone-shaped protective net 31 allows the bait odor to diffuse, while preventing leeches and large impurities from entering the protective net 31 and contacting the bait. The opening 33 at the top of the protective net 31 facilitates the placement of bait. The sealing plate 32 at the bottom of the protective net 31 is threadedly connected to the bottom of the lower section cylinder 1, making the bait placement component 3 detachable and convenient for replacing bait and cleaning residue inside the protective net 31. The protective net 31 prevents the bait inside from being eaten by leeches and washed away by water flow, extending the effective time of the bait, reducing the frequency of bait replenishment, and lowering material costs. The protective net 31 intercepts bait residue, preventing residue from clogging the first filter screen of the lower section cylinder 1 and ensuring the cleanliness of the interior of the lower section cylinder 1. The removable sealing plate 32 makes bait replacement and cleaning of residue inside the protective net 31 more convenient, improving the maintenance efficiency of the device, while preventing residue from polluting the aquatic environment.

[0033] Furthermore, a monitoring module 5 is installed on the inner side of the top cover 4. The monitoring module 5 includes an infrared sensor, a microprocessor, and a wireless communication unit. The infrared sensor is used to detect the leech entry signal of the upper section cylinder 2 and transmit the signal to the microprocessor. After the microprocessor counts the number, it sends the data to the terminal device through the wireless communication unit. At the same time, when the number of leeches reaches a preset threshold, an alarm command is triggered.

[0034] A monitoring module 5 is installed inside the top cover 4. The monitoring module 5 includes an infrared sensor, a microprocessor, and a wireless communication unit. The infrared sensor detects the infrared signal of leeches entering the upper section of the cylinder 2, identifies the leeches, and transmits the signal to the microprocessor. After the microprocessor performs statistics, it sends the data to a terminal device such as a mobile phone or computer through the wireless communication unit. When the number of leeches reaches a preset threshold, the microprocessor triggers an alarm command to remind the user to open the top cover 4 in time to collect the leeches in the upper section of the cylinder 2. Real-time monitoring of leeches captured inside the upper cylinder 2 is achieved, eliminating the need for frequent retrieval checks. Users can remotely monitor the capture status through terminal devices, reducing the number of field operations and lowering labor costs. The alarm function for reaching the target number prevents leeches from dying due to lack of oxygen caused by not opening the top cover 4 in time, or from leeches escaping due to late collection, thus improving the capture success rate and leech survival rate. It also allows users to reasonably arrange collection time and improve the efficiency of field operations.

[0035] The working process of this leech field trapping device is as follows: 1. Device deployment and bait delivery phase Component assembly: First, place the bait, such as animal entrails, into the inside of the protective net 31 through the opening 33 at the top of the protective net 31 in the bait placement component 3. Then, connect the sealing plate 32 at the bottom of the protective net 31 to the bottom of the lower section cylinder 1 with threads to complete the installation of the bait component. Upper and lower section connection: The lower connecting ring 21 at the bottom of the upper section cylinder 2 and the upper connecting ring 11 at the top of the lower section cylinder 1 are connected by thread rotation to ensure that the connection gap is sealed and to prevent abnormal water flow. Top cover installation: The top cover 4 with monitoring module 5 is detachably installed on the top of the upper cylinder 2. Check whether the wide mesh on the surface of the top cover 4 is unobstructed. Then, place the assembled device into the target water area in the field, such as rice paddies, ditches, or shallow lakes, to ensure that the device is stable and fixed. Both the upper cylinder 2 and the lower cylinder 1 are partially submerged in water. 2. Trapping and Targeted Guidance Stage Odor diffusion: The bait in the protective net 31 inside the lower section cylinder 1 slowly releases odor. Odor molecules diffuse to the surrounding water through the mesh size of the first filter screen (<0.1mm), forming an odor attraction zone centered on the device. Leeches in the surrounding area are stimulated by the odor and move towards the device. Leeches enter the upper section: After the leeches approach the device, they cannot pass through the first filter of the lower section cylinder 1. They will move upward along the odor gradient and eventually pass through the second filter of the upper section cylinder 2 with a mesh size of >5mm to enter the interior of the upper section cylinder 2, thus completing the directional trapping.

[0036] 3. Real-time monitoring and status feedback phase Quantity monitoring: In the monitoring module 5 inside the top cover 4, the infrared sensor continuously detects the infrared signal of the leeches in the upper cylinder 2. Each time a leech is detected entering, a signal is transmitted to the microprocessor. Data transmission and alarm: The microprocessor performs statistics and sends real-time quantity data to the user's terminal device, such as a mobile phone or computer, via a wireless communication unit; when the count reaches a preset threshold, the microprocessor triggers an alarm command, and the terminal device receives an alarm notification, reminding the user to collect the leeches in time. 4. Cleaning, maintenance, and leech collection phase Filter cleaning: If the second filter screen of the upper cylinder 2 is clogged by algae, mud and sand after the device has been running in the field for a period of time, the user can start the cleaning module 6: fix the trapping device on the cleaning frame, connect the spray pipe 61 to the water supply pipe 63, and the water pump 64 delivers external water to the vertical spray pipe 61 through the water supply pipe 63. Several nozzles 62 on the side of the spray pipe 61 spray high-pressure water evenly to blow and clean the inside of the second filter screen, remove the blockage, and restore the permeability of the filter screen. The whole process does not require disassembling the device, thus achieving cleaning and maintenance. Leech collection: After receiving the alarm from the monitoring module 5, the user removes the device from the water, removes the top cover 4 from the top of the upper section cylinder 2, and pours the leeches inside the upper section cylinder 2 directly into the collection container. If it is necessary to replenish the bait, the upper connecting ring 11 and the lower connecting ring 21 of the upper and lower sections can be separated by thread, the sealing plate 32 at the bottom of the lower section cylinder 1 can be opened, the bait in the protective net 31 can be replaced, and then the device can be reassembled and put back into the water to continue catching leeches. 5. Continuous Operation Phase After the leeches are collected and the bait is replenished, the device is put back into the water, and the monitoring module 5 continues to work: the monitoring module 5 continues to count the newly entered leeches in real time, so as to achieve continuous and efficient trapping.

[0037] Finally, it should be noted that the electronic components in the monitoring module 5 and other components in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A field trapping device for leeches, comprising an upper section and a lower section, characterized in that: The upper and lower sections are an upper cylindrical body (2) and a lower cylindrical body (1), respectively. The lower cylindrical body (1) has a first filter screen on its side wall. The mesh size of the first filter screen is less than 0.1 mm, so leeches cannot pass through the first filter screen. The upper cylindrical body (2) has a second filter screen on its side wall. The mesh size of the second filter screen is greater than 5 mm, so leeches can freely pass through the second filter screen and enter the interior of the upper cylindrical body (2). The lower cylindrical body (1) has a bait placement component (3) installed inside.

2. The water mite field trapping device according to claim 1, characterized in that: The height of the lower section (1) accounts for one-third of the total height of the leech field trapping device, and the height of the upper section (2) accounts for two-thirds of the total height of the leech field trapping device.

3. The water mite field trapping device according to claim 1, wherein: The lower section of the cylinder (1) is equipped with an upper connecting ring (11) at the top, and the upper section of the cylinder (2) is equipped with a lower connecting ring (21) at the bottom. The lower connecting ring (21) and the upper connecting ring (11) are threaded together.

4. The water mite field trapping device of claim 1, wherein: The top of the upper section cylinder (2) is detachably fitted with a top cover (4), and the surface of the top cover (4) is provided with wide mesh holes.

5. The water mite field trapping device of claim 1, wherein: A cleaning module (6) is installed on the inner side of the upper section cylinder (2). The cleaning module (6) includes a vertical water spray pipe (61). Several nozzles (62) are evenly installed on the side of the water spray pipe (61). A water supply pipe (63) is connected to the top of the water spray pipe (61). A water pump (64) is installed on the water supply pipe (63). The water pump (64) inputs water into the water spray pipe (61) through the water supply pipe (63) and sprays it outward through the nozzles (62) to clean the second filter screen of the upper section cylinder (2).

6. The leech field trapping device according to claim 1, characterized in that: The bait placement component (3) includes a cone-shaped protective net (31), the bait is placed inside the protective net (31), the top of the protective net (31) is provided with an opening (33), and a sealing plate (32) is installed at the bottom of the protective net (31). The sealing plate (32) is threadedly connected to the bottom of the lower section cylinder (1).

7. The leech field trapping device according to claim 4, characterized in that: The monitoring module (5) is installed on the inner side of the top cover (4). The monitoring module (5) includes an infrared sensor, a microprocessor and a wireless communication unit. The infrared sensor is used to detect the leeches entering the upper section of the cylinder (2) and transmit the signal to the microprocessor. The microprocessor sends the data to the terminal device through the wireless communication unit.

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