High-density breeding system and method for poecilobdella manillensis

Abstract

The invention relates to the technical field of poecilobdella manillensis breeding equipment, in particular to a poecilobdella manillensis high-density breeding system and a method thereof.The poecilobdella manillensis high-density breeding system comprises a feeding machine and a lifting platform arranged below the feeding machine, and the feeding machine comprises a moving trolley, a transmission part arranged in the moving trolley, a distributor used for cutting feeding blood clots and a plurality of feed boxes. According to the high-density breeding system and method for the poecilobdella manillensis, a cam periodically abuts against a left baffle and a right baffle to drive an upper slotting tool and a lower slotting tool to transversely move in a square frame in a staggered mode, large blood clots in a feed box are accurately cut into small blocks with the uniform size, traditional manual operation is replaced, meanwhile, the uniform blocks ensure the fairness of feeding of poecilobdella manillensis seedlings, and the feeding efficiency of the poecilobdella manillensis seedlings is improved. Strips caused by too large blocks or waste caused by too small blocks are avoided, and uniform and automatic bait casting above the whole culture pond is achieved in cooperation with constant-speed advancing of the moving trolley.

Description

Technical Field

[0001] This invention relates to the field of Hirudo medicinalis farming equipment technology, and more specifically, to a high-density Hirudo medicinalis farming system and method thereof. Background Technology

[0002] The high-density breeding system for leeches is a modern breeding model that integrates three-dimensional breeding, recirculating water treatment, and precise temperature control. It scientifically breeds leeches through tiered breeding boxes, efficient water circulation filtration, and a constant temperature environment. In terms of feed selection, there is also a difference between juveniles and adult leeches. Because juveniles have small mouthparts and weak digestive abilities, the blood clots are soft and easy to attach to, making it convenient for leeches to pierce and suck them, and easy to digest and absorb. Adult leeches have a large feeding volume and strong vitality. The blood intestines can be suspended in the water, simulating natural prey and stimulating their predatory desire. At the same time, the toughness of the intestines makes them easy to pick up, reducing mutual damage caused by fighting.

[0003] Patent application CN202122332065.4 discloses a disinfection system for Hirudo nipponia seedlings, including a culture tank and open culture dishes placed inside. Assembly frames are fixedly connected to both ends of the culture tank, and a load-bearing block is fixedly connected between the tops of the two assembly frames. By incorporating a rotating motor, threaded rod, limiting block, collecting roller, and collecting tension rope, a simple mechanical structure replaces manual labor for catching and protecting Hirudo nipponia, reducing the labor intensity of workers, improving work efficiency, and indirectly increasing the survival rate of Hirudo nipponia.

[0004] However, existing high-density leech farming systems have significant shortcomings in the feeding of larvae. During the larval feeding stage, traditional methods rely on manual chopping and scattering of blood clots, which is not only labor-intensive and inefficient, but also results in blood clots of uneven size. This leads to larvae competing for food and growing unevenly. Furthermore, the randomness of manual scattering causes uneven feeding, with some areas having excess feed that quickly dissolves and directly pollutes the fragile water quality on which the larvae depend for survival. Secondly, feeding management is extensive. Usually, after the larvae finish feeding, it is necessary to manually retrieve the blood clots from the water, which is time-consuming and laborious. Unlike feeding adult leeches with blood sausage, this method is not easy to manage and exacerbates the disease risk in the larval rearing ponds.

[0005] In view of this, we propose a high-density breeding system and method for Hirudo medicinalis. Summary of the Invention

[0006] The purpose of this invention is to provide a high-density breeding system and method for Hirudo medicinalis, which uses a cam to periodically abut against the left and right baffles, driving the upper and lower blades to move laterally in an alternating manner within a frame, thereby precisely cutting large blood clots in the feed box into small pieces of uniform size, replacing traditional manual operation and solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: The high-density breeding system for leeches includes a feeder and a lifting platform located below the feeder. The feeder includes a mobile cart, a transmission unit located inside the mobile cart, a feeder for cutting feed blood clots, and several feed boxes. The mobile cart includes two symmetrically arranged scrapers. The feeder includes a cam that rotates with the moving vehicle, a pair of baffles disposed on the outside of the cam, a number of inserts disposed on the inner walls of the two baffles and arranged in a centrally symmetrical manner, and a frame disposed between the upper and lower inserts. After the cam in this setting rotates, it abuts against the two baffles on the left and right, causing the two upper and lower blades in the square frame to move laterally in turn, dividing the blood clots in the hopper and discharging them downwards; The lifting platform includes a hanging frame, a hanging net set below the hanging frame, two limiting frames symmetrically set in the grooves of the front and rear beam plates of the hanging frame, and a lever set at the end of the limiting frame. The outer corner of the hanging net is provided with a limiting groove. After the moving vehicle passes over the hanging frame, the scraper drives the lever to move outward, which in turn drives the end of the limit frame to move out of the limit groove. After the hanging net is unlocked, it moves down with several cut blood clots.

[0008] In the technical solution of the present invention, a breeding pool is provided below the feeding machine, and rails are fixedly connected to the front and rear ends of the breeding pool by bolts.

[0009] This setup clarifies the overall layout of the feeder, lifting platform, and breeding ponds. The track design enables the feeder to move above multiple breeding ponds, laying the structural foundation for automated, assembly-line feeding.

[0010] In the technical solution of the present invention, the mobile vehicle further includes a vehicle body, a motor fixedly connected to the top surface of the vehicle body by screws, a main bevel gear coaxially connected to the output shaft of the motor, a secondary bevel gear meshing with the main bevel gear, a rotating shaft snapped into the secondary bevel gear and rotatably connected to the inner wall of the vehicle body, a pulley rotatably connected to the corner of the outer wall of the vehicle body and sliding in the track, a cross plate welded and fixed to the inner wall of the vehicle body, and a bracket sleeved on the outside of the rotating shaft and snapped and fixed to the inner top surface of the vehicle body.

[0011] In the technical solution of the present invention, the two pulleys on the right side are fixedly connected to the ends of the rotating shaft by a locking pin, and the scraper is welded and fixed to the bottom surface of the horizontal plate and is set at an angle.

[0012] In the technical solution of the present invention, the transmission part includes two synchronous pulleys of different sizes and a synchronous belt sleeved between the two synchronous pulleys, and the smaller synchronous pulley is snapped and fixed on the outer wall of the motor output shaft.

[0013] The above setup integrates the functions of driving walking and cutting simultaneously with a single motor, achieving efficient power distribution and coordinated movement of the entire machine.

[0014] In the technical solution of the present invention, the feeder further includes a square box fixed inside the vehicle body, several limiting frames fixed to the top surface of the square box by screws, a rotatably connected inside the square box and fixed to the inner wall of the large-sized synchronous wheel, the cam fixed to the outer wall of the connecting rod, the baffle slidably connected to the inner wall of the square box, and two protrusions sleeved on the outer side of the cam integrally formed near the center of the inner wall of the baffle.

[0015] In the technical solution of the present invention, the insert is welded and fixed to the inner wall of the baffle, and a plurality of telescopic rods are snapped and fixed to the outer wall of the baffle. The outer ends of the telescopic rods are snapped and fixed to the inner wall of the square box. A first spring is sleeved on the outer side of the telescopic rod. The elastic force provided by the first spring pushes the baffle to move towards the square frame. The square frame is welded and fixed to the square box. Two centrally symmetrical slots are opened on the inner walls of the left and right ends of the square frame. The insert slides inside the slots.

[0016] The above setup uses a cam to drive the insert blade to move alternately under the action of the first spring, which evenly divides the blood clot within the frame, thus solving the problems of uneven cutting and low efficiency caused by manual cutting from the source.

[0017] In the technical solution of the present invention, a sliding groove communicating with the inner wall groove of the hanging bracket is provided at the end corner of the hanging bracket. The limiting frame is slidably connected to the inside of the inner wall groove of the hanging bracket. An inclined chamfer is provided on the bottom surface of the end of the limiting frame. Several second springs with their ends welded to the inner wall groove of the hanging bracket are welded on the outer wall of the limiting frame. The lever is engaged with the top surface of the limiting frame and extends above the sliding groove.

[0018] This feature enables the scraper and lever of the mobile vehicle to be linked, driving the limit frame to disengage from the limit groove, thus achieving automatic and stable entry of the net carrying bait into the water.

[0019] In the technical solution of the present invention, the lifting platform further includes a connecting part disposed at the corner of the top surface of the hanging frame. The connecting part includes a fixed frame that is snapped onto the top surface of the hanging frame, a fixed rod that is snapped onto the end of the fixed frame, a spiral spring whose inner end is snapped onto the outer wall of the fixed rod, a spool that is sleeved on the outside of the spiral spring and rotatably connected to the outer wall of the fixed rod, and a connecting rope that is wound around the outside of the spool and whose end is connected to the frame of the hanging net. The outer end of the spiral spring is snapped onto the inner wall of the spool.

[0020] This setup features a net that is automatically lifted and reset via a reel and connecting rope, driven by a helical spring, thus removing any remaining bait from the water and fundamentally preventing water pollution.

[0021] On the other hand, the present invention also provides a method for high-density farming of Hirudo medicinalis, comprising the following steps: S1. First, install several feed boxes containing coagulated blood clots upside down in the limiting frame of the feeder. Then start the motor of the moving car. The motor output shaft drives the main bevel gear to mesh with the secondary bevel gear, which drives the rotating shaft and end pulley to rotate, so that the entire feeding machine can move smoothly laterally along the tracks on both sides of the pool. S2. When the motor is running, its output shaft drives the small synchronous pulley to rotate, and the power is transmitted to the large synchronous pulley via the synchronous belt, which in turn drives the cam to rotate continuously inside the box through the connecting rod. S3. During rotation, the cam periodically abuts against the left and right baffles, causing the upper and lower sets of inserts in the frame to move outwards one after another. Then, under the elastic force of the first spring, it quickly resets, so that during the movement of the moving vehicle, the falling blood clots are continuously and evenly cut into small pieces and accurately placed onto the surface of the hanging net below. S4. When the blood clot cutting and feeding is completed, the mobile vehicle moves to the top of the hanging frame. Its bottom scraper pushes the lever to move outward, causing the limit frame to slide laterally so that its end is separated from the limit groove of the hanging net. The hanging net then pulls the connecting rope to descend smoothly under the action of gravity, and gently places the cut blood clots it carries on the surface of the aquaculture pond. S5. The young leeches that live by the pond are attracted by the smell of blood clots and swim to the top of the net and attach to the surface of the blood clots to start feeding. At the same time, the feeding machine continues to move to the next target breeding pond and repeats the above process to achieve continuous feeding. S6. After feeding, when the leech larvae are saturated with blood and leave the blood clots, returning to their usual habitat near the pond edge, the helical spring in the connecting part releases its stored elastic potential energy, driving the reel to rotate and wind the connecting rope, smoothly lifting the net and returning it to its initial standby position. During this lifting process, the net detaches from the water, and its surface humidity gradually decreases. This causes a few larvae still attached to the blood clots to loosen their grip due to the gradually drying environment, eventually falling out of the net and safely returning to the water in the breeding pond.

[0022] Compared with the prior art, the beneficial effects of the present invention are: 1. This high-density breeding system and method for Hirudo nipponia utilizes a cam that periodically abuts against left and right baffles, causing the upper and lower blades to move crisscrossing laterally within a frame. This precisely cuts large blood clots in the feed bin into uniformly sized small pieces, replacing traditional manual operation. The uniform size of the pieces ensures fair feeding for Hirudo nipponia larvae, avoiding competition due to excessively large pieces or waste caused by pieces that are too small. Combined with the uniform movement of the mobile vehicle, it achieves uniform and automated feeding over the entire breeding pond. This not only reduces labor intensity but also solves the problems of uneven larval growth and water pollution caused by uneven feeding in traditional methods.

[0023] 2. The high-density breeding system and method for Hirudo nipponia involves a scraper that drives a lever when a mobile vehicle passes by, releasing the locking mechanism of the net and allowing the net, which carries the cut blood clots, to descend smoothly to the water surface under gravity. This process avoids the direct impact of feed spillage on the water. Simultaneously, after the Hirudo nipponia larvae have finished feeding, the net is automatically retrieved to its initial position via a connecting part, carrying away any remaining waste blood clots from the water and preventing water pollution from decaying feed. Furthermore, the lifting process of the net also encourages the leeches to detach and return to the water after feeding, achieving integrated feeding and cleaning, and increasing the difficulty of cleaning the breeding environment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is one of the structural schematic diagrams of the feeding machine in this invention; Figure 4 This is the second schematic diagram of the feeding machine in this invention; Figure 5 This is a schematic diagram of the structure of the mobile vehicle in this invention; Figure 6 This is a schematic diagram of the transmission unit in the present invention; Figure 7 This is a cross-sectional schematic diagram of the material distributor in this invention; Figure 8 This is a cross-sectional schematic diagram of a portion of the material distributor in this invention; Figure 9 This is a partial structural diagram of the distributor in this invention; Figure 10 This is a schematic diagram of the lifting platform in this invention; Figure 11 This is a partial sectional view of the lifting platform in this invention; Figure 12 This is a partial structural diagram of the lifting platform in this invention; Figure 13 This is a cross-sectional schematic diagram of the connecting part in this invention; Figure 14 This is a schematic diagram of the mesh structure in this invention; Explanation of reference numerals in the attached figures: 100. Feeder; 110. Mobile cart; 111. Car body; 112. Motor; 113. Main bevel gear; 114. Secondary bevel gear; 115. Shaft; 116. Pulley; 117. Horizontal plate; 118. Scraper; 119. Bracket; 120. Transmission unit; 121. Synchronous pulley; 122. Synchronous belt; 130. Distributor; 131. Square box; 132. Limiting frame; 133. Connecting rod; 134. Cam; 135. Baffle; 1350. Protruding strip; 136. Inserting knife; 137. Telescopic rod; 138. First spring; 139. Square frame; 1390. Slot; 140. Feed bin; 200. Lifting platform; 210. Hanging bracket; 211. Slide groove; 220. Connecting part; 221. Fixing frame; 222. Fixing rod; 223. Helical spring; 224. Spool; 225. Connecting rope; 230. Hanging net; 231. Limiting groove; 240. Limiting frame; 250. Second spring; 260. Lever; 300. Aquaculture ponds; 400. Track. Detailed Implementation

[0025] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0026] Please see Figure 1 As shown, this embodiment provides the following technical solution: The high-density breeding system for leeches includes a feeder 100 and a lifting platform 200 located below the feeder 100. A breeding pond 300 is located below the feeder 100, and rails 400 are bolted to the front and rear ends of the breeding pond 300.

[0027] Furthermore, the tracks 400 on the front and rear sides of the breeding pond 300 allow the feeder 100 to move smoothly above multiple breeding ponds 300. The feeder 100 is used to evenly divide the blood clots used to feed the seedlings and then throw them into the interior of the lifting platform 200. This setting clarifies the overall layout of the feeder 100, the lifting platform 200 and the breeding pond 300. The track 400 design realizes the mobility of the feeder 100 above multiple breeding ponds 300, laying the structural foundation for automated, assembly-line feeding.

[0028] Please see Figures 2-6As shown, in this embodiment, the feeding machine 100 includes a mobile cart 110, a transmission unit 120 disposed inside the mobile cart 110, a feeder 130 for cutting feeding blood clots, and several feed boxes 140. The mobile cart 110 includes two symmetrically arranged scrapers 118.

[0029] Specifically, the mobile vehicle 110 also includes a vehicle body 111, a motor 112 fixedly connected to the top surface of the vehicle body 111 by screws, a main bevel gear 113 coaxially connected to the output shaft of the motor 112, a secondary bevel gear 114 meshing with the main bevel gear 113, a rotating shaft 115 snapped into the secondary bevel gear 114 and rotatably connected to the inner wall of the vehicle body 111, a pulley 116 rotatably connected to the corner of the outer wall of the vehicle body 111 and sliding in the track 400, a cross plate 117 welded and fixed to the inner wall of the vehicle body 111, and a bracket 119 sleeved on the outside of the rotating shaft 115 and snapped and fixed to the inner top surface of the vehicle body 111.

[0030] Furthermore, the two pulleys 116 on the right side are fixedly connected to the ends of the rotating shaft 115 by locking pins, and the scraper 118 is welded and fixed to the bottom surface of the horizontal plate 117 and is set at an angle.

[0031] Furthermore, the transmission unit 120 includes two synchronous pulleys 121 of different sizes and a synchronous belt 122 sleeved between the two synchronous pulleys 121. The smaller synchronous pulley 121 is snapped and fixed to the outer wall of the output shaft of the motor 112.

[0032] Furthermore, the vehicle body 111 is used to determine the overall structural strength of the mobile vehicle 110. After the motor 112 is started, the output shaft of the motor 112 drives the main bevel gear 113 to mesh with the secondary bevel gear 114, thereby driving the rotating shaft 115 and the end pulley 116 to rotate, so that the entire feeding machine 100 can move smoothly laterally along the tracks 400 on both sides of the pool. At the same time as the motor 112 is running, its output shaft drives the small synchronous pulley 121 to rotate, and transmits the power to the large synchronous pulley 121 via the synchronous belt 122, thereby driving the large synchronous pulley 121 to rotate. This setting integrates the functions of driving walking and cutting simultaneously by a single motor 112, realizing efficient power distribution and coordinated movement of the whole machine.

[0033] Please see Figures 7-9 As shown, in this embodiment, the feeder 130 includes a cam 134 that rotates with the moving vehicle 110, a pair of baffles 135 disposed on the outside of the cam 134, a number of inserts 136 disposed on the inner walls of the two baffles 135 and arranged in a centrally symmetrical manner, and a frame 139 disposed between the upper and lower inserts 136. After the cam 134 rotates, it abuts against the left and right baffles 135, causing the upper and lower inserts 136 in the frame 139 to move laterally one after another, dividing the blood clots in the feed box 140 and discharging them downwards.

[0034] Specifically, the feeder 130 also includes a square box 131 that is snapped into the inside of the car body 111, several limiting frames 132 that are fixed to the top surface of the square box 131 by screws, a rotatably connected to the inside of the square box 131 and snapped into the inner wall of the large-size synchronous wheel 121, a cam 134 that is snapped into the outer wall of the connecting rod 133, a baffle 135 that is slidably connected to the inner wall of the square box 131, and two protrusions 1350 that are sleeved on the outside of the cam 134 are integrally formed on the inner wall of the baffle 135 near the center.

[0035] Furthermore, the inserter 136 is welded and fixed to the inner wall of the baffle 135. Several telescopic rods 137 are snapped and fixed to the outer wall of the baffle 135. The outer ends of the telescopic rods 137 are snapped and fixed to the inner wall of the square box 131. A first spring 138 is sleeved on the outer side of the telescopic rods 137. The elastic force provided by the first spring 138 pushes the baffle 135 to move towards the square frame 139. The square frame 139 is welded and fixed to the square box 131. Two centrally symmetrical slots 1390 are opened on the inner walls of the left and right ends of the square frame 139. The inserter 136 slides inside the slots 1390.

[0036] Furthermore, the square box 131 provides a placement area for several limiting frames 132, ensuring the stability of the placement of the material box 140. The connecting rod 133 rotates synchronously with the large-size synchronous wheel 121. During the rotation, the cam 134 periodically abuts against the left and right baffles 135, driving the upper and lower sets of insert blades 136 in the square box 139 to move outwards one after another, and then quickly reset under the elastic force of the first spring 138. This achieves continuous and uniform cutting of the falling blood clots into small pieces and precise placement below during the movement of the moving vehicle 110. During this process, the telescopic rod 137 is used to limit the extension range of the first spring 138, and the slot 1390 is used to ensure the stability of the movement of the insert blades 136. This setting drives the insert blades 136 to move alternately under the action of the first spring 138 through the cam 134, uniformly dividing the blood clots in the square box 139, solving the problems of uneven cutting and low efficiency of manual cutting from the source.

[0037] Please see Figures 10-14 As shown, in this embodiment, the lifting platform 200 includes a hanging frame 210, a hanging net 230 disposed below the hanging frame 210, two limiting frames 240 symmetrically disposed in the grooves of the front and rear beam plates of the hanging frame 210, and a lever 260 disposed at the end of the limiting frame 240. The corners of the outer frame of the hanging net 230 are provided with limiting grooves 231. After the moving vehicle 110 passes above the hanging frame 210, the scraper 118 drives the lever 260 to move outward, driving the end of the limiting frame 240 to move out of the limiting groove 231. After the hanging net 230 is unlocked, it moves down with several cut blood clots.

[0038] Specifically, the end corner of the hanger 210 is provided with a sliding groove 211 that communicates with the groove in the inner wall of the hanger 210. The limiting frame 240 is slidably connected to the inside of the groove in the inner wall of the hanger 210. The bottom surface of the end of the limiting frame 240 is provided with an inclined chamfer. Several second springs 250 with their ends welded to the groove in the inner wall of the hanger 210 are welded to the outer wall of the limiting frame 240. The lever 260 is engaged with the top surface of the limiting frame 240 and extends above the sliding groove 211.

[0039] Furthermore, when the blood clots are cut and fed, and the mobile vehicle 110 moves above the hanging frame 210, its bottom scraper 118 pushes the lever 260 outward, causing the limiting frame 240 to slide laterally so that its end disengages from the limiting groove 231 of the hanging net 230. The hanging net 230 then pulls the connecting rope 225 down smoothly under the action of gravity, gently placing the cut blood clots it carries onto the water surface of the aquaculture pond 300. The limiting frame 240 will then reset under the elastic force of the second spring 250. This setting links the scraper 118 and lever 260 of the mobile vehicle 110, driving the limiting frame 240 to disengage from the limiting groove 231, thus realizing the automatic and smooth entry of the hanging net 230 carrying the feed into the water.

[0040] Please see Figure 13 As shown, in this embodiment, the lifting platform 200 further includes a connecting part 220 disposed at the corner of the top surface of the hanging frame 210. The connecting part 220 includes a fixing frame 221 that is snapped onto the top surface of the hanging frame 210, a fixing rod 222 that is snapped onto the end of the fixing frame 221, a spiral spring 223 whose inner end is snapped onto the outer wall of the fixing rod 222, a spool 224 that is sleeved on the outside of the spiral spring 223 and rotatably connected to the outer wall of the fixing rod 222, and a connecting rope 225 that is wound around the outside of the spool 224 and whose end is connected to the frame of the hanging net 230. The outer end of the spiral spring 223 is snapped onto the inner wall of the spool 224.

[0041] Furthermore, after feeding, when the juvenile leeches have sucked their fill of blood and actively leave the blood clots and return to their usual habitat near the edge of the pond, the helical spring 223 in the connecting part 220 releases its stored elastic potential energy, driving the reel 224 to rotate. This causes the reel to wind around the connecting rope 225, smoothly lifting the net 230 and returning it to its initial standby position. At the same time, it compresses the bottom chamfer of the limiting frame 132, causing it to retract and re-insert into the limiting groove 231. This feature allows the net 230 to be automatically lifted and reset under the drive of the helical spring 223 via the reel 224 and connecting rope 225, thereby removing uneaten food from the water and fundamentally preventing water pollution.

[0042] The high-density farming method for Hirudo medicinalis of the present invention includes the following steps: S1. First, several feed boxes 140 containing coagulated blood clots are installed upside down in the limiting frame 132 of the feeder 130. Then, the motor 112 of the moving car 110 is started. The output shaft of the motor 112 drives the main bevel gear 113 to mesh with the secondary bevel gear 114, which drives the rotating shaft 115 and the end pulley 116 to rotate, so that the entire feeding machine 100 can move smoothly laterally along the rails 400 on both sides of the pool. S2. When the motor 112 is running, its output shaft drives the small synchronous pulley 121 to rotate. The power is transmitted to the large synchronous pulley 121 via the synchronous belt 122, and then the cam 134 is driven to rotate continuously inside the box 131 via the connecting rod 133. S3, during the rotation of the cam 134 periodically abuts against the left and right baffles 135, causing the upper and lower sets of inserts 136 in the frame 139 to move outward laterally, and then quickly reset under the elastic force of the first spring 138, so that during the movement of the moving vehicle 110, the falling blood clots are continuously and evenly cut into small pieces and accurately placed onto the surface of the hanging net 230 below. S4. When the blood clot cutting and feeding is completed, the mobile vehicle 110 moves to the top of the hanging frame 210. Its bottom scraper 118 pushes the lever 260 to move outward, causing the limiting frame 240 to slide laterally so that its end is separated from the limiting groove 231 of the hanging net 230. The hanging net 230 then pulls the connecting rope 225 to descend smoothly under the action of gravity, and gently places the cut blood clots it carries on the surface of the aquaculture pond 300. S5. The young leeches that live by the pond are attracted by the smell of blood clots and swim to the top of the hanging net 230 and attach to the surface of the blood clots to start feeding. At the same time, the feeding machine 100 continues to move to the next target breeding pond 300 and repeats the above process to achieve continuous feeding. S6. After feeding, when the leech larvae are saturated with blood and actively leave the blood clot residue, returning to their usual habitat near the pond edge, the helical spring 223 in the connecting part 220 releases its stored elastic potential energy, driving the reel 224 to rotate, thereby winding the connecting rope 225, smoothly lifting the hanging net 230 and resetting it to the initial standby position. During this lifting process, the hanging net 230 is removed from the water, and its surface humidity gradually decreases, causing a few larvae still attached to the blood clot residue to actively loosen their grip due to the gradually drying environment, and eventually fall out of the mesh and safely return to the water in the breeding pond 300.

[0043] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A high-density breeding system for Hirudo nipponia, characterized by: The device includes a feeding machine and a lifting platform located below the feeding machine. The feeding machine includes a moving cart, a transmission unit located inside the moving cart, a feeder for cutting blood clots for feeding, and several feed boxes. The moving cart includes two symmetrically arranged scrapers. The feeder includes a cam that rotates with the moving vehicle, a pair of baffles on the outside of the cam, several inserts on the inner walls of the two baffles and arranged in a centrally symmetrical manner, and a square frame between the upper and lower inserts. After the cam rotates, it abuts against the left and right baffles, causing the upper and lower inserts in the square frame to move laterally in sequence, dividing the blood clots in the feed box and discharging them downwards. The lifting platform includes a hanging frame, a hanging net set below the hanging frame, two limiting frames symmetrically set in the grooves of the front and rear beam plates of the hanging frame, and a lever set at the end of the limiting frame. The corners of the outer frame of the hanging net are provided with limiting grooves. After the moving vehicle passes over the hanging frame, the scraper drives the lever to move outward, driving the end of the limiting frame to move out of the limiting groove. After the hanging net is unlocked, it moves down with several cut blood clots.

2. The high-density breeding system for Hirudo nipponia according to claim 1, characterized in that: Below the feeding machine is a breeding pool, and the front and rear ends of the breeding pool are fixed with rails by bolts.

3. The high-density breeding system for Hirudo medicinalis according to claim 2, characterized in that: The mobile vehicle also includes a vehicle body, a motor fixedly connected to the top surface of the vehicle body by screws, a main bevel gear coaxially connected to the output shaft of the motor, a secondary bevel gear meshing with the main bevel gear, a rotating shaft snapped into the secondary bevel gear and rotatably connected to the inner wall of the vehicle body, a pulley rotatably connected to the corner of the outer wall of the vehicle body and sliding in the track, a cross plate welded and fixed to the inner wall of the vehicle body, and a bracket sleeved on the outside of the rotating shaft and snapped and fixed to the top surface of the inner wall of the vehicle body.

4. The high-density breeding system for Hirudo medicinalis according to claim 3, characterized in that: The two pulleys on the right side are fixedly connected to the ends of the shaft by locking pins, and the scraper is welded and fixed to the bottom surface of the horizontal plate and is set at an angle.

5. The high-density breeding system for Hirudo medicinalis according to claim 4, characterized in that: The transmission unit includes two synchronous pulleys of different sizes and a synchronous belt sleeved between the two synchronous pulleys. The smaller synchronous pulley is snapped and fixed to the outer wall of the motor output shaft.

6. The high-density breeding system for Hirudo medicinalis according to claim 5, characterized in that: The feeder also includes a square box fixed inside the vehicle body, several limiting frames fixed to the top surface of the square box by screws, a rotatable connection to the inside of the square box and fixed to the inner wall of the large-sized synchronous pulley, the cam fixed to the outer wall of the connecting rod, the baffle slidably connected to the inner wall of the square box, and two protrusions sleeved on the outer side of the cam integrally formed near the center of the inner wall of the baffle.

7. The high-density breeding system for Hirudo medicinalis according to claim 6, characterized in that: The inserter is welded and fixed to the inner wall of the baffle. Several telescopic rods are snapped and fixed to the outer wall of the baffle. The outer ends of the telescopic rods are snapped and fixed to the inner wall of the box. A first spring is sleeved on the outer side of the telescopic rod. The elastic force provided by the first spring pushes the baffle to move towards the square frame. The square frame is welded and fixed to the box. Two centrally symmetrical slots are opened on the inner walls of the left and right ends of the square frame. The inserter slides inside the slots.

8. The high-density breeding system for Hirudo medicinalis according to claim 7, characterized in that: The end corner of the bracket is provided with a sliding groove that communicates with the groove in the inner wall of the bracket. The limiting frame is slidably connected to the inside of the groove in the inner wall of the bracket. The bottom surface of the end of the limiting frame is provided with an inclined chamfer. Several second springs with their ends welded to the groove in the inner wall of the bracket are welded on the outer wall of the limiting frame. The lever is engaged with the top surface of the limiting frame and extends above the sliding groove.

9. The high-density breeding system for Hirudo medicinalis according to claim 8, characterized in that: The lifting platform also includes a connecting part located at the corner of the top surface of the hanging frame. The connecting part includes a fixed frame that is snapped onto the top surface of the hanging frame, a fixed rod that is snapped onto the end of the fixed frame, a spiral spring whose inner end is snapped onto the outer wall of the fixed rod, a spool that is sleeved on the outside of the spiral spring and rotatably connected to the outer wall of the fixed rod, and a connecting rope that is wound around the outside of the spool and whose end is connected to the frame of the hanging net. The outer end of the spiral spring is snapped onto the inner wall of the spool.

10. A method for high-density farming of Hirudo medicinalis, using the high-density farming system for Hirudo medicinalis as described in claim 9, characterized in that: Includes the following steps: S1. First, install several feed boxes containing coagulated blood clots upside down in the limiting frame of the feeder. Then start the motor of the moving car. The motor output shaft drives the main bevel gear to mesh with the secondary bevel gear, which drives the rotating shaft and end pulley to rotate, so that the entire feeding machine can move smoothly laterally along the tracks on both sides of the pool. S2. When the motor is running, its output shaft drives the small synchronous pulley to rotate, and the power is transmitted to the large synchronous pulley via the synchronous belt, which in turn drives the cam to rotate continuously inside the box through the connecting rod. S3. During rotation, the cam periodically abuts against the left and right baffles, causing the upper and lower sets of inserts in the frame to move outwards one after another. Then, under the elastic force of the first spring, it quickly resets, so that during the movement of the moving vehicle, the falling blood clots are continuously and evenly cut into small pieces and accurately placed onto the surface of the hanging net below. S4. When the blood clot cutting and feeding is completed, the mobile vehicle moves to the top of the hanging frame. Its bottom scraper pushes the lever to move outward, causing the limit frame to slide laterally so that its end is separated from the limit groove of the hanging net. The hanging net then pulls the connecting rope to descend smoothly under the action of gravity, and gently places the cut blood clots it carries on the surface of the aquaculture pond. S5. The young leeches that live by the pond are attracted by the smell of blood clots and swim to the top of the net and attach to the surface of the blood clots to start feeding. At the same time, the feeding machine continues to move to the next target breeding pond and repeats the above process to achieve continuous feeding. S6. After feeding, when the leech larvae are saturated with blood and leave the blood clots, returning to their usual habitat near the pond edge, the helical spring in the connecting part releases its stored elastic potential energy, driving the reel to rotate and wind the connecting rope, smoothly lifting the net and returning it to its initial standby position. During this lifting process, the net detaches from the water, and its surface humidity gradually decreases. This causes a few larvae still attached to the blood clots to loosen their grip due to the gradually drying environment, eventually falling out of the net and safely returning to the water in the breeding pond.

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