Automatic classified fish collecting system and classified fish collecting method

Abstract

The invention discloses an automatic classified fish collecting system and a classified fish collecting method, and belongs to the field of aquaculture. The system is composed of an inclined fish feeding device, a transverse moving distribution device and a classified fish collecting device. The inclined fish feeding device comprises an inclined fish feeding track, a concentric-square-shaped conveying chain and a first driving device, and the fish containing frames are installed on the chain at equal intervals, can drain water and are detachable; the transverse moving distribution device is provided with a classification controller, a horizontal rail and a transfer frame, and the transfer frame can identify the fish collecting box and slide on the rail; the classified fish collecting device is located below the track, and the multiple fish collecting boxes are provided with identity devices and weighing systems. The classified fish collecting method comprises the steps that fishes are put into the fish containing frame and transferred to the transferring frame through the inclined fish feeding device, and the transferring frame is matched with the fish collecting box according to the identification code to throw the fishes. The problems that in an existing fish collecting mode, fishes are prone to being damaged, conveying and weighing are separated, adaptability is poor, the automation level is low, and continuous and rapid conveying cannot be achieved are solved, and efficient, low-loss and automatic classified fish collecting is achieved.

Description

Technical Field

[0001] The present invention relates to aquaculture, and more particularly to an automated fish sorting and harvesting system and a method for sorting and harvesting fish. Background Art

[0002] In the field of aquaculture, the processes of fishing, loading fish, and transportation are crucial for aquaculture efficiency and fish survival rate. Common fish loading devices and weighing systems on the market can be generally classified into the following categories:

[0003] (1) Water pump conveying system

[0004] The water pump type fish loading device sucks fish from the aquaculture water body by using water flow and conveys them to the transportation container or sorting system through pipelines. Although this method can reduce manual operation to a certain extent and improve the fish loading efficiency, it has the following problems:

[0005] Fish are vulnerable to water flow impact, resulting in damage or stress response, which affects the survival rate;

[0006] The inner wall of the pipeline may cause frictional damage to the fish body, especially for varieties with relatively fragile scales;

[0007] This system usually does not integrate a weighing function and requires additional weighing equipment, which affects the overall operation efficiency.

[0008] (2) Screw conveyor system

[0009] This system pushes fish upward through a spiral blade and is widely used in aquaculture processing plants and some farms. Its main defects include:

[0010] The mechanical structure is complex, the equipment cost is high, and it is difficult to meet the needs of small and medium-sized farms;

[0011] The mechanical blade contacts the fish body frequently, which is easy to cause damage;

[0012] There is a contradiction between the speed of screw conveying and the bearing capacity of fish, and it is difficult to balance high efficiency and low loss.

[0013] (3) Net bag and manual operation

[0014] In small and medium-sized farms, manual operation is still the main fish loading method, and usually a net bag or a hanging net is used for fishing and handling. The limitations of this method include:

[0015] It requires a large amount of manpower, has a high labor intensity, and low efficiency;

[0016] During the operation process, fish are easily squeezed and scratched, resulting in a decline in quality;

[0017] Lack of automation and precise weighing function, and it is difficult to meet the needs of modern aquaculture and logistics.

[0018] 2. Deficiencies in the prior art

[0019] Although the above prior art has certain applicability in specific scenarios, overall, there are still the following deficiencies in terms of high efficiency, low loss, automation level, and intelligent management:

[0020] Fish damage problem: Most existing conveying methods (such as pump conveying and screw conveying) have problems of causing mechanical damage or stress response to fish bodies, affecting survival rate and market value.

[0021] Separation of conveying and weighing: Existing systems usually require additional weighing steps, resulting in complex processes, reduced efficiency, and increased risk of fish damage due to multiple handling.

[0022] Poor adaptability: Some equipment (such as screw conveyors) is mainly used in processing plants, is bulky, and is not suitable for flexible aquaculture environments, making it difficult to meet diverse operation requirements.

[0023] Low automation level: Traditional methods still rely on manual operation. Especially in small and medium-sized farms, the labor intensity is high and the efficiency is low, which does not conform to the development trend of intelligent modern aquaculture. Summary of the Invention

[0024] The present invention provides an automatic fish sorting and collection system. The fully automatic fish collection system is used to transfer the fish in the fish pond to a fish transport vehicle parked on the shore. The fully automatic fish collection system includes an inclined fish loading device, a transverse transfer and distribution device, and a sorting and fish collection device;

[0025] The inclined fish loading device includes an inclined fish loading track arranged between the fish pond and the shore. The lower side of the inclined fish loading track is located in the fish pond, and the upper side of the inclined fish loading track is suspended and fixed on the shore. The inclined fish loading track is provided with a "return" shaped conveyor chain that rotates in a circular motion in the vertical direction, and a first driving device for driving the rotation of the "return" shaped conveyor chain.

[0026] Equidistantly fixed and installed on the "return" shaped conveyor chain are fish loading frames. The fish loading frames are trapezoidal fish frames. The bottom surface of the fish loading frame fits the inclined fish loading track. During the upward climbing process of the "return" shaped conveyor chain and the fish loading frame, the upper surface of the fish loading frame is parallel to the horizontal plane.

[0027] The transverse transfer and distribution device includes a sorting controller, a horizontal track, and a transfer frame. The starting end of the horizontal track is located directly below the upper side of the inclined fish loading track. The transfer frame is slidably installed on the horizontal track. A second driving device for driving the transverse movement of the transfer frame is installed on the transfer frame. The transfer frame is equipped with a fish collection box identification device, and a fish release valve is provided at the bottom of the transfer frame. The second driving device, the fish collection box identification device, and the fish release valve are all connected to the sorting controller;

[0028] The sorting and collecting fish device is located directly below the horizontal track. The sorting and collecting fish device is provided with a plurality of fish collecting boxes distributed along the sliding direction of the transfer frame. An identity device for near-field communication with the fish collecting box identification device is arranged on each fish collecting box, and the fish collecting box is equipped with a weighing system.

[0029] Further, a number of water drainage holes are provided on both sides of the fish loading frame, and water permeable plates are slidably installed on both sides of the fish loading frame. The water permeable plates are provided with sliding grooves, and fastening bolts pass through the sliding grooves and are threadedly connected to the side plates of the fish loading frame to install the water permeable plates on both sides of the fish loading frame;

[0030] The water permeable plates are provided with water permeable holes at positions consistent with the water drainage holes. The coincidence degree of the water permeable holes and the water drainage holes is adjusted by sliding the water permeable plates, so as to adjust the drainage speed of the fish loading frame during the climbing process.

[0031] Further, the sorting controller further includes a control switch installed on the inclined fish loading track. The control switch is connected to the sorting controller, and the control switch is provided with control buttons having the same number as the fish collecting boxes.

[0032] Further, a cover plate is rotatably installed at the top of the rear side of the fish loading frame.

[0033] Further, the fish collecting box identification device is an RFID reader, and the identity device is an RFID chip. During the sliding process of the transfer frame on the horizontal track, the RFID identification device and the RFID chip form a near-field communication connection.

[0034] Further, it further includes an image recording system and a pressure sensor connected to the sorting controller,

[0035] The image recording system is provided with an industrial camera near the starting end of the horizontal track. The industrial camera is used to collect images of the transfer frame sliding to the starting end of the horizontal track;

[0036] The pressure sensor is arranged inside the transfer frame.

[0037] Further, the fish loading frame is detachably installed on the "U"-shaped conveying chain. Axle seats are provided at both ends of the fish loading frame, and pins pass through the axle seats and are threadedly connected to the "U"-shaped conveying chain to fix the fish loading frame on the "U"-shaped conveying chain.

[0038] A sorting and collecting fish method based on the above-mentioned automatic sorting and collecting fish system includes the following steps:

[0039] Pour fish of a single species into the fish loading frame in the fish pond;

[0040] The "U"-shaped conveying chain rotates on the inclined fish loading track to drive the fish loading frame with fish to climb upward;

[0041] When the fish-loading frame that has climbed to the top rotates to be below the inclined fish-loading track, the opening of the fish-loading frame faces downward and the fish inside are dumped into the transfer frame located at the starting end of the horizontal track;

[0042] The transfer frame slides on the horizontal track, and during the sliding process, the fish-collecting box identification device is used to obtain the identification code of the fish-collecting box directly below the transfer frame.

[0043] The classification controller matches the currently obtained identification code of the fish-collecting box with the preset fish species. If the match is successful, the transfer frame stops directly above the current fish-collecting box, and then the fish-discharging valve is opened, and the fish in the transfer frame are put into the designated fish-collecting box, and the fish-collecting box weighs the fish;

[0044] The transfer frame slides to the starting end of the horizontal track and waits to receive the fish dumped by the next fish-loading frame.

[0045] Further, let the interval time between two adjacent fish-loading frames passing through the high side of the inclined fish-loading track be T1.

[0046] Let the time required for the transfer frame to slide from the starting end of the horizontal track to the farthest end, open the fish-discharging valve to complete the fish-dumping work, and then return to the starting end be T2;

[0047] T1 is greater than T2.

[0048] The technical advantages of the present invention are as follows:

[0049] 1. Reducing fish damage: By adopting the inclined fish-loading device, the upper surface of the fish-loading frame remains horizontal during the climbing process, reducing the shaking and collision of fish. Compared with the water pump type and spiral conveying system, it avoids water flow impact, pipeline friction and mechanical blade damage, effectively reduces the stress response of fish, and improves the survival rate and market value.

[0050] 2. Integrating the functions of conveying and weighing: The fish-collecting box of the classified fish-collecting device is equipped with a weighing system, and the weighing is completed synchronously during the fish-receiving process, reducing additional weighing steps, simplifying the process, reducing the risk of damage to fish caused by multiple handling, and improving the overall operation efficiency.

[0051] 3. Strong adaptability: The system structure is reasonably designed. The inclination of the inclined fish-loading track can be changed by adjusting the height of the support frame, and it can adapt to the terrain conditions of different fishpond banks. The overall equipment is relatively flexible and suitable for various scales of farms, especially small and medium-sized farms, solving the problem of poor adaptability of traditional large equipment.

[0052] 4. High degree of automation: From fish loading, fish loading, transfer to classified delivery in the fish-loading frame, the whole process is automatically completed by the classification controller coordinating with each device. Reducing manual operation and labor intensity, it conforms to the development trend of modern aquaculture intelligentization. Description of the Drawings

[0053] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0054] Figure 1 It is a schematic diagram of an automated fish sorting and collecting system installed in a fishpond and on the shore;

[0055] Figure 2 It is a side view of the automated fish sorting and collecting system;

[0056] Figure 3 It is Figure 2 a partial enlarged view of

[0057] Figure 4 It is Figure 3 a three-dimensional view of

[0058] Figure 5 It is a three-dimensional view of the inclined fish loading device;

[0059] Figure 6 It is a schematic diagram of a trapezoidal fish loading frame with a permeable plate;

[0060] Figure 7 It is a schematic diagram of the transverse transfer and distribution device and the classification fish collecting device at its bottom;

[0061] Figure 8 It is a schematic diagram of the classification system principle for realizing fish sorting and collection. Specific embodiments

[0062] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some well-known technical features in the art are not described.

[0063] To thoroughly understand the present invention, detailed steps and detailed structures will be proposed in the following description to illustrate the technical solutions of the present invention. The preferred embodiments of the present invention are described in detail as follows. However, in addition to these detailed descriptions, the present invention can also have other embodiments.

[0064] The present invention provides an automated fish sorting and collecting system. The fully automated fish collecting system is used to transfer the fish in the fishpond to a fish transport vehicle parked on the shore. The fully automated fish collecting system includes an inclined fish loading device 100, a transverse transfer and distribution device 200, and a classification fish collecting device 300.

[0065] Inclined fish-catching device 100

[0066] The inclined fish-catching device 100 includes an inclined fish-catching track 110 arranged between the fishpond 1 and the shore 2. The lower side of the inclined fish-catching track 110 is located in the fishpond, and the upper side of the inclined fish-catching track 110 is suspended and fixed on the shore. The inclined fish-catching track 110 is provided with a "return" shaped conveying chain 111 that rotates in a circular motion in the vertical direction, and a first driving device for driving the rotation of the "return" shaped conveying chain 111.

[0067] In actual application scenarios, for fishponds of different scales, the selection of the length and inclination angle of the inclined fish-catching track 110 is particularly crucial. In large fishponds, to improve the fish-catching efficiency, the track length can be appropriately increased, and at the same time, the inclination angle can be controlled within a range that can ensure the stable climbing of the fish-loading frame 120 and meet the requirements of rapid conveying, generally between 30° and 45°. In small fishponds, considering the site limitations, the track length will be correspondingly shortened, and the inclination angle can be flexibly adjusted according to the actual terrain to ensure the applicability of the equipment.

[0068] In an optional embodiment, a cover plate 140 is rotatably installed at the top of the rear side of the fish-loading frame 120. During the climbing process of the fish-loading frame 120, the cover plate 140 is manually buckled on the top of the fish-loading frame 120 to prevent fish from escaping from the fish-loading frame 120. In actual operation, for the convenience of manual operation, a handle that is easy to grasp can be provided on the cover plate 140, and a smooth hinge structure can be adopted at the connection between the cover plate and the fish-loading frame to make the opening and closing of the cover plate easier. In addition, a rubber sealing strip can be provided at the edge of the cover plate to enhance the sealing effect and further prevent fish from jumping out.

[0069] Fish-loading frames 120 are fixedly installed at equal intervals on the "return" shaped conveying chain 111. The fish-loading frame 120 is a trapezoidal fish frame. The bottom surface of the fish-loading frame 120 is an inclined surface and fits with the inclined fish-catching track 110. When the "return" shaped conveying chain 111 and the fish-loading frame 120 climb upward, the upper surface of the fish-loading frame 120 is parallel to the horizontal plane to prevent fish from running out of the fish-loading frame 120. After the "return" shaped conveying chain 111 drives the fish-loading frame 120 to rotate to the lower part of the inclined fish-catching track 110, the cover plate 140 automatically opens under the action of gravity.

[0070] In an alternative embodiment, the fish loading frame 120 is made of a flexible material, which can reduce damage to the fish. A number of drain holes 121 are provided on both sides of the fish loading frame 120, and water permeable plates 130 are slidably installed on both sides of the fish loading frame 120. The water permeable plates 130 are provided with sliding grooves 132, and fastening bolts pass through the sliding grooves 132 and are threadedly connected to the side plates of the fish loading frame 120 to install the water permeable plates 130 on both sides of the fish loading frame 120; the water permeable plates 130 are provided with water permeable holes 131 that coincide with the positions of the drain holes 121. By sliding the water permeable plates 130, the coincidence degree of the water permeable holes 131 and the drain holes 121 is adjusted, thereby adjusting the drainage speed of the fish loading frame 120 during the climbing process. In actual use, the position of the water permeable plate 130 can be adjusted in advance according to the type and water content of the fish.

[0071] In an alternative embodiment, the inclined fish loading track 110 is fixed by a support frame, and the inclination of the inclined fish loading track 110 is adjusted by adjusting the height of the support frame to meet different on-site requirements. In addition, the fish loading frame 120 is detachably installed on the "U"-shaped conveyor chain 111. Axle seats are provided at both ends of the fish loading frame 120, and pins pass through the axle seats and are threadedly connected to the "U"-shaped conveyor chain 111 to fix the fish loading frame 120 on the "U"-shaped conveyor chain 111. For the convenience of disassembling and installing the fish loading frame 120, a quick-connect pin structure can be adopted, such as a pin with a threaded knob, which can realize the quick replacement of the fish loading frame without using additional tools, improving the maintenance efficiency of the equipment. At the same time, the support frame can adopt a foldable structural design, which is convenient for storage when the equipment is not in use, saving space.

[0072] Transverse transfer device 200

[0073] The transverse transfer device 200 includes a classification controller 230, a horizontal track 210, and a transfer frame 220. The starting end of the horizontal track 210 is located directly below the high side of the inclined fish loading track. The transfer frame 220 is slidably installed on the horizontal track 210. The transfer frame 220 has no top plate for temporarily storing the fish dumped from the fish loading frame 120. A fish discharging valve 260 is provided at the bottom of the transfer frame 220, and the fish in the transfer frame 220 is put into the fish collecting box 310 directly below by opening the fish discharging valve 260.

[0074] A second driving device 250 for driving the transverse movement of the transfer frame 220 is installed on the transfer frame 220. The transfer frame 220 is provided with a fish collecting box identification device 240. The second driving device 250, the fish collecting box identification device 240, and the fish discharging valve 260 are all connected to the classification controller 230.

[0075] After the transfer frame 220 receives the fish, the sorting controller 230 first controls the second driving device 250 to start according to the pre-set matching rules between the fish species and the fish collecting tanks. During the sliding process of the transfer frame 220, the fish collecting tank identification device 240 continuously obtains the identification codes of the fish collecting tanks 310 below and feeds back the information to the sorting controller 230 in real time. The sorting controller 230 analyzes and matches the identification codes. Once the matching is successful, it immediately sends a stop instruction to the second driving device 250 and simultaneously controls the fish release valve 260 to open.

[0076] Sorting fish collecting device 300

[0077] The sorting fish collecting device 300 is located directly below the horizontal track 210. The sorting fish collecting device 300 is provided with 4 fish collecting tanks 310 distributed along the sliding direction of the transfer frame 220, and the fish collecting tanks 310 are configured with a weighing system.

[0078] In an optional embodiment, the sorting controller 230 further includes a control switch 231 installed on the inclined fish loading track 110. The control switch 231 is connected to the sorting controller 230, and the control switch 231 is provided with control buttons having the same number as the fish collecting tanks 310. The fishing personnel in the fish pond press the corresponding control buttons to mark the currently caught fish, and subsequently the sorting controller 230 will classify and collect the fish according to this information. To facilitate the operation of the fishing personnel, the buttons of the control switch 231 can adopt a design with large size, waterproof and obvious markings, which is convenient for quick and accurate operation in a humid working environment. At the same time, a wireless communication connection can be adopted between the control switch 231 and the sorting controller 230 to avoid the inconvenience and safety hazards brought by wiring.

[0079] In an optional embodiment, the fish collecting tank identification device 240 includes an RFID identification device 241 installed on the transfer frame 220 and RFID chips 242 fixed on each fish collecting tank 310. During the sliding process of the transfer frame 220 on the horizontal track 210, the RFID identification device 241 and the RFID chips 242 form a near-field communication connection, thereby enabling the fish collecting tank identification device 240 to read the identification codes of the fish collecting tanks 310 below.

[0080] The principle of realizing classified fish collection in the present invention is as follows:

[0081] 1) The fishing personnel in the fish pond put a single species of fish (such as carp) into the fish loading frame 120 and cover it with the cover plate 140. When putting the fish, the fishing personnel can control the number of fish in the fish loading frame 120 according to experience and actual situation to avoid affecting the fish collection efficiency and the survival rate of the fish too much or too little. At the same time, during the fish loading process, the fish can be preliminarily screened to remove the obviously injured or poor-quality fish. Before fishing, the type of fish is first entered into the classification controller 230, or the type of fish is entered into the classification controller 230 through the control button of the control switch, which is convenient for the subsequent classification controller 230 to control the transfer frame 220 for classification.

[0082] 2) The first driving device of the inclined fish loading device 100 drives the "U"-shaped conveying chain 111 to rotate, and the "U"-shaped conveying chain 111 drives the fish loading frame 120 to climb upward from the fish pond. During the climbing process, the water in the fish loading frame 120 flows out through the water draining holes 121. When the fish loading frame 120 moves to the top of the inclined fish loading track 110, the water in the fish loading frame 120 is basically completely drained. The drainage speed of the fish loading frame 120 is changed by sliding the water permeable plate 130.

[0083] 3) The "U"-shaped conveying chain 111 drives the fish loading frame 120 to rotate at the top turning point of the inclined fish loading track 110 so that the opening faces downward, and the fish in the fish loading frame 120 are poured into the transfer frame 220 located at the starting end of the horizontal track 210.

[0084] 4) After the fish are received in the transfer frame 220, the classification controller 230 controls the second driving device 250 to drive the transfer frame 220 to slide along the horizontal track 210 according to the pre-set type of fish. During the sliding process of the transfer frame 220, the fish collection box identification device 240 continuously identifies the identification code of the fish collection box 310 located directly below the transfer frame 220. Specifically, during the sliding process of the transfer frame 220 on the horizontal track 210, the RFID identification device 241 forms a near-field communication connection with the RFID chip 242 to obtain the identification code of the fish collection box 310 located directly below the transfer frame 220. The classification controller 230 matches the RFID chip 24 information obtained by the RFID identification device 241 with the pre-set type of fish. If the RFID chip 24 information is the carp box, the matching is successful and the second driving device 250 is immediately stopped; otherwise, the transfer frame 220 continues to slide until the matching is successful. To ensure successful matching, it is necessary to ensure that the pre-entered fish information corresponds to at least one fish collection box information.

[0085] 5) The classification controller 230 controls the fish release valve 260 to open, and pours the fish in the transfer frame 220 into the corresponding fish collection box 310. Subsequently, the transfer frame 220 slides to the starting end of the horizontal track 210 and closes the fish release valve 260, waiting to transfer the fish in the next fish loading frame 120.

[0086] 6) Weigh the weight of the fish collecting box 310 in real time through the weighing system built into the fish collecting box 310.

[0087] It should be noted that let the interval time between two adjacent fish loading frames 120 passing through the high side of the inclined fish loading track be T1, and let the time required for the transfer frame 220 to slide from the starting end of the horizontal track 210 to the farthest end, open the fish discharging valve 260 to complete the fish discharging work and then return to the starting end be T2; T1 must be greater than T2. This avoids the situation where the interval time for the transfer frame 220 to discharge fish is too short, resulting in the transfer frame 220 not having completed dumping the fish into the designated fish collecting box 310 and returning to the starting end of the horizontal track 210. During the actual operation process, the time difference between T1 and T2 can be reasonably controlled by adjusting the running speeds of the first driving device and the second driving device, as well as the transfer quantity of the fish loading frame 120, to ensure the efficient and stable operation of the system.

[0088] During the waiting process of the transfer frame 220 at the starting end of the horizontal track 210, the image of the transfer frame 220 is collected in real time through an industrial camera. When the fish loading frame 120 dumps fish into the transfer frame 220, the background algorithm system of the industrial camera processes the image and judges whether the transfer frame 220 has received the fish well. After the fish discharging is completed, a signal is sent to the classification controller 230 to execute the next step, that is, the second driving device 250 drives the transfer frame 220 to slide along the horizontal track 210. In another embodiment, it is also possible to determine whether there is fish entering through the pressure sensor in the transfer frame 220. When the weight increase is sensed, a signal is sent to the classification controller 230, and the second driving device 250 is started after waiting for a few seconds. To improve the accuracy and stability of detection, high-precision and high-reliability products should be selected for the industrial camera and the pressure sensor, and calibration and maintenance should be carried out regularly. At the same time, the shooting angle of the camera and the installation position of the pressure sensor can be optimized to ensure that the entry of fish and the state of the fish in the transfer frame can be accurately detected.

[0089] Whether it is to determine whether there is fish in the transfer frame 220 through an industrial camera or through a pressure sensor, both belong to the commonly used technical means of those skilled in the art and will not be elaborated here.

[0090] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essence of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An automated fish sorting and collection system, the fully automated fish collection system is used to transfer the fish in the fish pond to a fish transport vehicle parked on the shore, and is characterized in that, The full-automatic fish collection system includes an inclined fish loading device, a transverse transfer device, and a classification fish collection device; The inclined fish loading device includes an inclined fish loading track arranged between the fish pond and the shore. The lower side of the inclined fish loading track is located in the fish pond, and the upper side of the inclined fish loading track is suspended and fixed on the shore. The inclined fish loading track is provided with a "return" shaped conveying chain that rotates in a circular motion in the vertical direction, and a first driving device for driving the rotation of the "return" shaped conveying chain. Equidistantly fixed and installed on the "return" shaped conveying chain are fish loading frames. The fish loading frames are trapezoidal fish frames, and the bottom surface of the fish loading frame fits with the inclined fish loading track. During the upward climbing process of the "return" shaped conveying chain and the fish loading frame, the upper surface of the fish loading frame is parallel to the horizontal plane. The transverse transfer device includes a classification controller, a horizontal track, and a transfer frame. The starting end of the horizontal track is located directly below the upper side of the inclined fish loading track. The transfer frame is slidably installed on the horizontal track. A second driving device for driving the transverse movement of the transfer frame is installed on the transfer frame. The transfer frame is equipped with a fish collection box identification device, and a fish release valve is provided at the bottom of the transfer frame. The second driving device, the fish collection box identification device, and the fish release valve are all connected to the classification controller. The classification fish collection device is located directly below the horizontal track. The classification fish collection device is provided with a plurality of fish collection boxes distributed along the sliding direction of the transfer frame. An identity device for near-field communication with the fish collection box identification device is provided on each fish collection box, and the fish collection box is equipped with a weighing system.

2. The automated fish sorting and collection system according to claim 1, wherein A number of water drainage holes are provided on both sides of the fish loading frame, and water permeable plates are slidably installed on both sides of the fish loading frame. The water permeable plates are provided with sliding grooves, and fastening bolts pass through the sliding grooves and are threadedly connected to the side plates of the fish loading frame to install the water permeable plates on both sides of the fish loading frame. The water permeable plates are provided with water permeable holes that coincide with the positions of the water drainage holes. By sliding the water permeable plates, the coincidence degree of the water permeable holes and the water drainage holes is adjusted, thereby adjusting the drainage speed of the fish loading frame during the climbing process.

3. The automated fish sorting and collection system according to claim 1, wherein The classification controller further includes a control switch installed on the inclined fish loading track. The control switch is connected to the classification controller, and the control switch is provided with control buttons having the same number as the fish collection boxes.

4. The automated fish sorting and collection system according to claim 2, wherein A cover plate is rotatably installed at the top of the rear side of the fish loading frame.

5. The automated fish sorting and collection system according to claim 3, wherein The fish collection box identification device is an RFID identifier, and the identity device is an RFID chip. During the sliding process of the transfer frame on the horizontal track, the RFID identification device and the RFID chip form a near-field communication connection.

6. The automated fish sorting and collection system according to claim 1, characterized in that, It further includes an image recording system and a pressure sensor connected to the classification controller. The image recording system is provided with an industrial camera near the starting end of the horizontal track. The industrial camera is used to collect images of the transfer frame sliding to the starting end of the horizontal track. The pressure sensor is arranged inside the transfer frame.

7. The automated fish sorting and collection system according to claim 1, characterized in that, The fish loading frame is detachably installed on the "return" shaped conveying chain. Axle seats are provided at both ends of the fish loading frame, and pins pass through the axle seats and are threadedly connected to the "return" shaped conveying chain to fix the fish loading frame on the "return" shaped conveying chain.

8. A fish sorting and collecting method based on the automated fish sorting and collecting system according to any one of claims 1-7, characterized in that, It includes the following steps: Dump fish of a single species into the fish loading frame in the fish pond; The "return" shaped conveying chain rotates on the inclined fish loading track to drive the fish loading frame with fish to climb upward; When the fish loading frame climbing to the top rotates below the inclined fish loading track, the opening of the fish loading frame faces downward and dumps the fish inside into the transfer frame located at the starting end of the horizontal track. The transfer frame slides on the horizontal track, and during the sliding process, the identification code of the fish collection box located directly below the transfer frame is obtained through the fish collection box identification device. The classification controller matches the currently obtained identification code of the fish collection box with the preset fish species. If the match is successful, the transfer frame stops directly above the current fish collection box, and then the fish release valve is opened, and the fish in the transfer frame are put into the designated fish collection box for weighing by the fish collection box. The transfer frame slides to the starting end of the horizontal track and waits to receive the fish delivered by the next fish loading frame.

9. The classification fish receiving method according to claim 8, characterized in that The time interval between two adjacent fish loading frames passing through the high side of the inclined fish loading track is set as T1. The time required for the transfer frame to slide from the starting end of the horizontal track to the farthest end, open the fish release valve to complete the fish dumping work and then return to the starting end is set as T2. T1 is greater than T2.

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