A freshwater fry separating device

Abstract

The utility model discloses a freshwater fry separating device belongs to fry separating technical field, this separating device includes fry box, the inner wall sliding installation of fry box is with multiple isolation frame, multiple the inner wall of isolation frame is equipped with net plate, and the mesh of multiple net plate increases gradually from left to right, be equipped with locking assembly on the isolation frame, the lateral wall bottom of fry box is provided with a plurality of discharge pipes, be equipped with valve on the discharge pipe, the bottom of fry box is provided with recess, the inner wall sliding installation support plate of recess, the support plate bottom four corners fixed mounting universal wheel, be equipped with lifting assembly on the support plate, and the device can accurate grading separation fry, and net plate is easy to change, and isolation frame is adjustable, can conveniently remove, dustproof and convenient to observe, guarantee separating high efficiency and fry activity.

Description

Technical Field

[0001] This utility model relates to the technical field of fish fry separation devices, and more specifically, to a freshwater fish fry separation device. Background Technology

[0002] In freshwater aquaculture, precise separation of fry of different sizes during the fry rearing process is crucial for ensuring farming efficiency and survival rates. Traditional fry separation methods rely heavily on manual screening, requiring workers to use hand filters or sieves to grade the fry. This is not only time-consuming and labor-intensive, but the subjectivity of manual operation can easily lead to uneven screening accuracy. Some smaller or weaker fry may also die during the screening process due to mechanical damage or prolonged exposure to water, resulting in aquaculture losses.

[0003] With the development of large-scale aquaculture, although some simple separation equipment has emerged, existing equipment generally has significant shortcomings: First, the separation structure is fixed, and the spacing or mesh size cannot be flexibly adjusted according to the actual size of the fish fry, only suitable for single species or fish fry at a fixed growth stage, resulting in poor versatility; Second, most equipment lacks stable guiding and limiting mechanisms, and water flow during separation can easily lead to uneven distribution of fish fry, affecting the separation effect; Third, the overall mobility of the equipment is insufficient, requiring external transport tools when moving to different aquaculture sites, and it is difficult to adapt to fish collection containers of different heights, increasing the difficulty of operation; In addition, some equipment lacks visual observation and precise positioning components, making it impossible for staff to monitor the separation progress in real time and accurately control the division of the separation area, further reducing the efficiency and reliability of the separation operation. These problems seriously restrict the standardization and efficiency of the freshwater fish fry rearing process, and there is an urgent need for a fish fry separation device that is flexible in structure, easy to operate, precise in separation, and highly adaptable to solve the above pain points. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a freshwater fish fry separation device, which aims to improve the problem that the separation structure is fixed, the mesh spacing or mesh size cannot be flexibly adjusted according to the actual fish fry specifications, and it can only be adapted to a single species or fish fry at a fixed growth stage, resulting in poor versatility.

[0005] This utility model is implemented as follows: A freshwater fish fry separation device includes a fish fry box, with multiple isolation frames slidably installed on the inner wall of the fish fry box. Mesh panels are installed on the inner walls of the multiple isolation frames, with the mesh size of the mesh panels increasing sequentially from left to right. Locking components are installed on the isolation frames. Multiple discharge pipes are provided at the bottom of the side wall of the fish fry box, with valves installed on the discharge pipes. A groove is provided at the bottom of the fish fry box, with a support plate slidably installed on the inner wall of the groove. Universal wheels are fixedly installed at the four corners of the bottom of the support plate, and a lifting component is installed on the support plate.

[0006] In a preferred embodiment of this utility model, the inner wall of the isolation frame is provided with a slot that matches the mesh plate, the top of the mesh plate slides through the isolation frame, and an arc-shaped groove is provided at the center of the top of the isolation frame, and the mesh plate is slidably connected to the inner wall of the slot.

[0007] In a preferred embodiment of this utility model, the bottom of the inner wall of the fish fry box is inclined, and the bottom of the isolation frame matches the bottom of the inner wall of the fish fry box.

[0008] In a preferred embodiment of this utility model, sliders are symmetrically fixedly installed on both sides of the isolation frame, and strip-shaped holes matching the sliders are provided on both sides of the fish fry box. Guide rods are fixedly installed on the inner wall of the strip-shaped holes, and the sliders are slidably installed on the guide rods. The sliders are slidably connected to the inner wall of the strip-shaped holes.

[0009] In a preferred embodiment of this utility model, a first limiting block and a second limiting block are fixedly installed on the two sliders on the isolation frame at opposite ends. One side of the first limiting block and the second limiting block are slidably connected to the outside of the fish fry box, and the length of the second limiting block is greater than the length of the first limiting block.

[0010] In a preferred embodiment of this utility model, an observation window and a scale are installed on one side of the fish fry box, and the second limiting block slides in contact with the scale on one side, with the scale positioned above the observation window.

[0011] In a preferred embodiment of this utility model, the locking assembly includes a rod, a spring, and a circular plate. A cavity is provided inside the second limiting block. The spring is fixedly installed on one side of the inner wall of the cavity. The circular plate is fixedly installed on one end of the spring. The rod is fixedly installed on the circular plate. One end of the rod slides through one side of the second limiting block and is inserted into the outer wall of the fish fry box. The other end of the rod slides through the other side of the second limiting block and is fixedly installed with a pull plate. A plurality of slots matching the rod are provided on one side of the fish fry box. The plurality of slots are equidistantly arranged on one side of the fish fry box, and the interval between two adjacent slots is between 5-10 cm.

[0012] In a preferred embodiment of this utility model, the lifting assembly includes a bracket, a U-shaped frame, and a threaded rod. The U-shaped frame is symmetrically fixedly installed on both sides of the fish fry box. The threaded rod is rotatably installed on the bottom of the inner wall of the U-shaped frame. The bracket is symmetrically fixedly installed on both sides of the support plate. The bracket is L-shaped and one end slides through the fish fry box and is threaded onto the threaded rod. The fish fry box has sliding holes on both sides that match the bracket. A driving assembly is installed at the top of the threaded rod. The two threaded rods are symmetrically arranged. The bracket is slidably connected to the inner wall of the sliding hole.

[0013] In a preferred embodiment of this utility model, the drive assembly includes a servo motor, a first rotating shaft, and a second rotating shaft. The first rotating shaft is fixedly mounted on the top end of the threaded rod. The top end of the first rotating shaft is rotatably connected to the top end of the inner wall of the U-shaped frame, and a first bevel gear is fixedly mounted on the first rotating shaft. The second rotating shaft is rotatably mounted inside the fish fry box. The two ends of the second rotating shaft pass through the fish fry box and are fixedly mounted with second bevel gears. The first bevel gear and the second bevel gear are meshed together. The servo motor is fixedly mounted on the top end of one of the U-shaped frames. The output end of the servo motor passes through the U-shaped frame and is fixedly connected to the top end of the first rotating shaft. The two second bevel gears are symmetrically arranged. A limit ring is mounted on the second rotating shaft.

[0014] In a preferred embodiment of this utility model, dustproof plates are symmetrically fixedly installed on both sides of the bracket, and dustproof grooves matching the dustproof plates are provided on both sides of the inner wall of the sliding hole.

[0015] The beneficial effects of this utility model are: Precise and efficient separation, ensuring fry viability: The device uses multiple isolation frames inside the fry box, with the mesh size of the mesh panels within the frames increasing from left to right. Combined with the inclined design of the bottom of the inner wall of the fry box, this allows fry of different sizes to accurately pass through the corresponding mesh and enter their designated isolation areas during the natural flow of water carrying the fry. This achieves automated grading and separation, avoiding damage caused by manual selection and significantly improving fry survival rate. At the same time, an observation window on one side of the fry box allows staff to monitor the separation progress in real time, further ensuring the controllability and efficiency of the separation operation.

[0016] The structure is flexible and adjustable, with strong versatility: the isolation frame can be slidably adjusted on both sides through the cooperation of sliders and guide rods, and with the scale that fits with the second limit block, the staff can accurately control the spacing of the isolation frame; in the locking assembly, the spring-driven plug can quickly fix the isolation frame in the target position, and pulling the pull plate can unlock and adjust it, and the 5-10cm interval between adjacent slots can meet different adjustment accuracy requirements, which can be adapted to the separation operation of fish fry of various sizes; in addition, the mesh plate is slidably connected to the isolation frame through the slot, which is convenient for subsequent disassembly, cleaning or replacement of mesh plates with different mesh sizes, further improving the versatility of the equipment.

[0017] Easy to move and adjust, with wide adaptability: The casters at the bottom of the support plate provide a base for the equipment to move, and the height of the equipment can be flexibly controlled with the lifting components: After the servo motor is started, the first bevel gear, the second bevel gear and the rotating shaft drive the threaded rod to rotate synchronously, which in turn causes the L-shaped bracket to move the support plate and casters up and down, which facilitates the transfer of the equipment between different breeding sites; at the same time, the dustproof plates on both sides of the bracket and the dustproof grooves on the inner wall of the sliding hole can effectively prevent dust from entering the equipment, ensure the stable operation of the transmission structure and extend the service life of the equipment.

[0018] Stable positioning and safe, reliable operation: The first and second limit blocks on both sides of the isolation frame slide close to the outside of the fish fry box, providing stable guidance for the adjustment of the isolation frame and preventing deviation during sliding; the second limit block is longer than the first limit block, further enhancing the limiting effect; the limit ring on the second rotating shaft in the drive assembly can prevent axial deviation when the shaft rotates, ensuring the stability of the transmission structure; the overall structural design takes into account both ease of operation and operational stability, reducing the operating intensity of workers while ensuring the safety and reliability of separation operations. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a freshwater fish fry separation device provided by an embodiment of the present invention; Figure 2 A side view of a freshwater fish fry separation device provided for an embodiment of this utility model; Figure 3 A schematic diagram of the internal structure of the fish fry box is provided for the embodiments of this utility model; Figure 4 A schematic diagram showing the disassembled structure of the isolation frame and the mesh plate is provided for the embodiments of this utility model; Figure 5 A structural schematic diagram of the locking assembly is provided for embodiments of this utility model; Figure 6 A structural schematic diagram of the lifting assembly is provided for the embodiments of this utility model.

[0021] In the diagram: 110-Fish fry box; 111-Discharge pipe; 112-Observation window; 120-Isolation frame; 121-Mesh plate; 122-Slider; 123-Guide rod; 124-First limit block; 125-Second limit block; 130-Support plate; 131-Wheel caster; 140-Plug rod; 141-Spring; 142-Circular plate; 143-Pull plate; 150-Bracket; 151-U-shaped frame; 152-Threaded rod; 153-Servo motor; 154-First rotating shaft; 155-Second rotating shaft; 156-Dustproof plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution: a freshwater fish fry separation device, including a fish fry box 110, a plurality of isolation frames 120 slidably installed on the inner wall of the fish fry box 110, a mesh plate 121 installed on the inner wall of the plurality of isolation frames 120, the mesh size of the plurality of mesh plates 121 increasing from left to right, a locking component installed on the isolation frame 120, a plurality of discharge pipes 111 provided at the bottom of the side wall of the fish fry box 110, a valve installed on the discharge pipe 111, a groove provided at the bottom of the fish fry box 110, a support plate 130 slidably installed on the inner wall of the groove, universal wheels 131 fixedly installed at the four corners of the bottom of the support plate 130, and a lifting component installed on the support plate 130.

[0024] In some specific implementation schemes, the inner wall of the isolation frame 120 is provided with a slot that matches the mesh plate 121. The top of the mesh plate 121 slides through the isolation frame 120, and an arc-shaped groove is provided at the center of the top of the isolation frame 120, allowing the mesh plate 121 to slide in connection with the inner wall of the slot. This allows for quick installation and removal of the mesh plate 121, facilitating subsequent cleaning, maintenance, or replacement with mesh plates of different mesh sizes, thus improving the flexibility of equipment use. Furthermore, the arc-shaped groove at the center of the top of the isolation frame 120 provides a convenient point of application for placing and removing the mesh plate 121, reducing the difficulty of operation for staff. It also ensures the stability of the connection between the mesh plate 121 and the isolation frame 120 after installation, preventing displacement of the mesh plate 121 due to water impact during separation and ensuring the separation effect.

[0025] In some specific implementation schemes, the bottom of the inner wall of the fry box 110 is inclined, and the bottom of the isolation frame 120 matches the bottom of the inner wall of the fry box 110. The inclined structure facilitates the discharge of fish from the discharge pipe 111.

[0026] In some specific implementations, sliders 122 are symmetrically fixedly installed on both sides of the isolation frame 120. The fish fry box 110 has strip-shaped holes on both sides that match the sliders 122. Guide rods 123 are fixedly installed on the inner walls of the strip-shaped holes. The sliders 122 are slidably mounted on the guide rods 123, and the sliders 122 are slidably connected to the inner walls of the strip-shaped holes. The guide rods 123 can limit the sliding trajectory of the sliders 122, preventing the isolation frame 120 from shifting or tilting during adjustment, ensuring that the isolation frame 120 always maintains a stable posture. Simultaneously, the sliding cooperation between the sliders 122 and the inner walls of the strip-shaped holes further enhances structural stability, reduces jamming during the sliding process of the isolation frame 120, and improves the smoothness of the adjustment operation.

[0027] In some specific implementation schemes, the two sliders 122 on the isolation frame 120 are respectively fixedly installed with the first limiting block 124 and the second limiting block 125 at their relatively far ends. The first limiting block 124 and the second limiting block 125 are slidably connected to the outside of the fish fry box 110 on one side. The length of the second limiting block 125 is greater than the length of the first limiting block 124, so as to reserve enough space for the subsequent installation of locking components and scale matching structure, ensuring that the functions of each component do not interfere with each other, and improving the rationality of the overall structural design.

[0028] In some specific implementation schemes, an observation window 112 and a scale are installed on one side of the fish fry box 110. The second limit block 125 slides in contact with the scale on one side. The scale is set above the observation window 112, which can intuitively display the adjustment position of the isolation frame 120. This makes it easy for staff to accurately control the spacing between different isolation frames 120, ensuring that the division of each isolation area meets the expected separation requirements, and improving separation accuracy and ease of operation.

[0029] Please see Figure 5 The locking assembly includes a rod 140, a spring 141, and a circular plate 142. A cavity is provided inside the second limiting block 125. The spring 141 is fixedly installed on one side of the inner wall of the cavity. The circular plate 142 is fixedly installed on one end of the spring 141. The rod 140 is fixedly installed on the circular plate 142. One end of the rod 140 slides through one side of the second limiting block 125 and is inserted into the outer wall of the fish fry box 110. The other end of the rod 140 slides through the other side of the second limiting block 125 and is fixedly installed on the pull plate 143. A plurality of slots matching the rod 140 are provided on one side of the fish fry box 110. The plurality of slots are equidistantly arranged on one side of the fish fry box 110. Pulling the pull plate 143 will cause the insertion rod 140 to disengage from the slot, thereby unlocking and adjusting the isolation frame 120. The operation is convenient and efficient. At the same time, multiple slots on one side of the fry box 110, which are equidistant and spaced 5-10cm apart, can provide multiple fixed positions for the isolation frame 120, meet the requirements of different spacing adjustment precision, and adapt to various fry separation scenarios.

[0030] Please see Figure 6The lifting assembly includes a bracket 150, a U-shaped frame 151, and a threaded rod 152. The U-shaped frame 151 is symmetrically fixedly installed on both sides of the fish fry box 110. The threaded rod 152 is rotatably installed on the bottom of the inner wall of the U-shaped frame 151. The bracket 150 is symmetrically fixedly installed on both sides of the support plate 130. The bracket 150 is L-shaped, with one end sliding through the fish fry box 110 and threaded onto the threaded rod 152. Sliding holes matching the bracket 150 are provided on both sides of the fish fry box 110. A drive assembly is installed at the top of the threaded rod 152. The two threaded rods 152 are symmetrically arranged. The sliding connection between the bracket 150 and the inner wall of the sliding hole further enhances the guiding nature of the lifting structure and improves the smoothness of adjustment. The drive assembly includes a servo motor 153, a first rotating shaft 154, and a second rotating shaft 155. The first rotating shaft is fixedly installed at the top of the threaded rod 152. 154. The top end of the first rotating shaft 154 is rotatably connected to the top end of the inner wall of the U-shaped frame 151, and a first bevel gear is fixedly installed on the first rotating shaft 154. A second rotating shaft 155 is rotatably installed inside the fish fry box 110. The two ends of the second rotating shaft 155 pass through the fish fry box 110 and are fixedly installed with second bevel gears. The first bevel gear and the second bevel gear are meshed together. A servo motor 153 is fixedly installed at the top end of one of the U-shaped frames 151. The output end of the servo motor 153 passes through the U-shaped frame 151 and is fixedly connected to the top end of the first rotating shaft 154. The two second bevel gears are symmetrically arranged. A limit ring is installed on the second rotating shaft 155 to ensure that the bevel gears always maintain a precise meshing state and prevent transmission failure. The overall transmission structure is compact, the power transmission is efficient and stable, the intensity of manual adjustment is reduced, and the automation level of the equipment is improved.

[0031] In some specific implementation schemes, dustproof plates 156 are symmetrically fixedly installed on both sides of the bracket 150, and dustproof grooves matching the dustproof plates 156 are provided on both sides of the inner wall of the sliding hole to prevent dust accumulation from causing the bracket 150 to slide and jam or the transmission parts to wear, thus ensuring the long-term stable operation of the lifting component. At the same time, the dustproof structure requires no additional maintenance and does not affect the normal lifting and adjustment of the bracket 150, thereby improving the service life of the equipment and reducing the later maintenance costs.

[0032] Working Principle: Before using the device, adjust the position of the isolation frame 120 within the fry box 110 according to the expected size differences of the fish fry to be separated. The sliders 122 on both sides of the isolation frame 120 can slide along the guide rods 123 in the strip holes on the side wall of the fry box 110. During the sliding process, the first limiting block 124 and the second limiting block 125 are in close contact with the outside of the fry box 110 to provide a limiting and guiding function. The second limiting block 125 slides against the scale above the observation window 112, allowing the operator to accurately control the spacing of the isolation frame 120 using the scale. After the position is determined, the locking assembly starts to work. The spring 141 in the cavity of the second limiting block 125 pushes the circular plate 142, causing one end of the insertion rod 140 to insert into the corresponding slot on the side wall of the fry box 110, thus fixing the isolation frame 120. If adjustment is required, pull the pull plate 143 to disengage the insertion rod 140 from the slot. The spacing between adjacent slots is 5-10cm to meet different adjustment precision requirements.

[0033] Fish fry separation process: Freshwater fish fry to be separated and water are injected into the fish fry box 110. Since the bottom of the inner wall of the fish fry box 110 is inclined, and the bottom of the isolation frame 120 matches the inclined surface, the water carrying the fish fry flows naturally along the inclined direction. The inner wall of the isolation frame 120 is connected to the mesh plate 121 installed through the slot, and the mesh size increases from left to right. During the flow, the smallest fish fry can pass through the mesh of the leftmost mesh plate 121 and enter the corresponding isolation area. The slightly larger fish fry are blocked and continue to flow to the next isolation frame 120, pass through the corresponding mesh and enter the corresponding area, and so on, to achieve the graded separation of fish fry of different sizes. The staff can observe the separation process in real time through the observation window 112.

[0034] Fish fry collection and device adjustment: After separation, open the valve on the discharge pipe 111 corresponding to the isolation area at the bottom of the side wall of the fish fry box 110. The fish fry in each area will flow out from the discharge pipe 111 with the water, completing the collection. If it is necessary to move the fish fry box 110, start the servo motor 153 in the lifting assembly. The output end of the servo motor 153 drives the first rotating shaft 154 connected to it to rotate. The first bevel gear on the first rotating shaft 154 drives the meshing second bevel gear to rotate, thereby causing the second rotating shaft 155 to rotate. The second bevel gears at both ends of the second rotating shaft 155 drive the first rotating shaft 154 and the threaded rod 152 on both sides to rotate synchronously. When the threaded rod 152 rotates, the L-shaped bracket 150 slides up and down along the sliding holes on both sides of the fish fry box 110. The bracket 150 drives the support plate 130 and the universal wheel 131 to move up and down, thereby realizing the support of the universal wheel 131 to the ground, which facilitates movement. The dustproof plates 156 on both sides of the bracket 150 slide along the dustproof grooves on the inner wall of the sliding hole to prevent dust from entering the device.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A freshwater fish fry separation device, comprising a fry box, characterized in that, Multiple isolation frames are slidably installed on the inner wall of the fish fry box. Mesh panels are installed on the inner walls of the multiple isolation frames. The mesh size of the multiple mesh panels increases from left to right. Locking components are installed on the isolation frames. Multiple discharge pipes are provided at the bottom of the side wall of the fish fry box. Valves are installed on the discharge pipes. A groove is provided at the bottom of the fish fry box. A support plate is slidably installed on the inner wall of the groove. Universal wheels are fixedly installed at the four corners of the bottom of the support plate. Lifting components are installed on the support plate.

2. The freshwater fish fry separation device according to claim 1, characterized in that, The inner wall of the isolation frame is provided with a slot that matches the mesh plate, and the top of the mesh plate slides through the isolation frame.

3. The freshwater fish fry separation device according to claim 1, characterized in that, The bottom of the inner wall of the fish fry box is inclined.

4. The freshwater fish fry separation device according to claim 1, characterized in that, The isolation frame is symmetrically fixedly installed with sliders on both sides. The fish fry box is provided with strip-shaped holes on both sides that match the sliders. The inner wall of the strip-shaped holes is fixedly installed with guide rods, and the sliders are slidably installed on the guide rods.

5. A freshwater fish fry separation device according to claim 4, characterized in that, The two sliders on the isolation frame are respectively fixedly installed with a first limiting block and a second limiting block at opposite ends. One side of the first limiting block and the second limiting block is slidably connected to the outside of the fish fry box.

6. A freshwater fish fry separation device according to claim 5, characterized in that, An observation window and a scale are installed on one side of the fish fry box, and the second limiting block slides in contact with the scale on one side.

7. A freshwater fish fry separation device according to claim 5, characterized in that, The locking assembly includes a rod, a spring, and a circular plate. A cavity is provided inside the second limiting block. The spring is fixedly installed on one side of the inner wall of the cavity. The circular plate is fixedly installed on one end of the spring. The rod is fixedly installed on the circular plate. One end of the rod slides through one side of the second limiting block and is inserted into the outer wall of the fish fry box. The other end of the rod slides through the other side of the second limiting block and is fixedly installed with a pull plate. A plurality of slots matching the rod are provided on one side of the fish fry box.

8. A freshwater fish fry separation device according to claim 1, characterized in that, The lifting assembly includes a bracket, a U-shaped frame, and a threaded rod. The U-shaped frame is symmetrically fixedly installed on both sides of the fish fry box. The threaded rod is rotatably installed on the bottom of the inner wall of the U-shaped frame. The bracket is symmetrically fixedly installed on both sides of the support plate. The bracket is L-shaped and one end slides through the fish fry box and is threaded onto the threaded rod. The fish fry box has sliding holes on both sides that match the bracket. A drive assembly is installed at the top of the threaded rod.

9. A freshwater fish fry separation device according to claim 8, characterized in that, The drive assembly includes a servo motor, a first rotating shaft, and a second rotating shaft. The first rotating shaft is fixedly installed at the top of the threaded rod. The top of the first rotating shaft is rotatably connected to the top of the inner wall of the U-shaped frame, and a first bevel gear is fixedly installed on the first rotating shaft. The second rotating shaft is rotatably installed inside the fish fry box. The two ends of the second rotating shaft pass through the fish fry box and are fixedly installed with second bevel gears. The first bevel gear and the second bevel gear are meshed together. The servo motor is fixedly installed at the top of one of the U-shaped frames, and the output end of the servo motor passes through the U-shaped frame and is fixedly connected to the top of the first rotating shaft.

10. A freshwater fish fry separation device according to claim 8, characterized in that, Dustproof plates are symmetrically fixedly installed on both sides of the bracket, and dustproof grooves matching the dustproof plates are provided on both sides of the inner wall of the sliding hole.

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