A fish fry screening device for aquaculture

Abstract

This invention relates to the field of fish breeding technology and proposes a fish fry screening device for aquaculture. The device includes a support platform, a double-layer screening mechanism, a water flow impact component, a transmission component, a discharge mechanism, a residual material collection mechanism, and a circulating screening component. The double-layer screening mechanism is mounted on the support platform and includes the water flow impact component and the transmission component. The discharge mechanism is installed between the double-layer screening mechanism and the support platform. The residual material collection mechanism is installed on one side of the support platform and includes a circulating screening component for circulating the screened fish fry water back into the double-layer screening mechanism for further screening. This technical solution solves the problem in existing roller-type grading machines where, when screening very small fish fry, the distance between the two rollers is extremely small. In this case, impurities in the water flow can easily clog the roller gaps during prolonged screening, or too many fish fry can concentrate in the roller gaps, causing blockages and leading to inaccurate sorting or even damage to a large number of fish fry.

Description

Technical Field

[0001] This invention relates to the field of fish breeding technology, specifically to a fish fry screening device for aquaculture. Background Technology

[0002] In fish fry farming, regular screening is an essential step to prevent competition for food and cannibalism caused by differences in body size. Grouping fish fry of the same size can also ensure balanced growth and reasonable allocation of farming space. There are various methods for screening fish fry. The simplest and most common method is to use a traditional sieve, which uses meshes of different sizes to allow small fish to pass through while leaving larger fish behind. However, the most commonly used technology in the present is the roller grading machine. The core principle is to use adjustable-gap rollers to grade fish fry by gravity and water flow. The rollers rotate in the same direction. Fish fry that are too small to fit between the rollers fall through the gaps under the action of gravity and water flow and enter the corresponding collection tank below. Fish fry that are larger than the gaps continue to move with the rollers until they are discharged from the end outlet. This method has the advantages of high efficiency and minimal damage. However, due to limitations in structural design, working environment, and application scenarios, when using a roller grading machine to screen ultra-small fry, the distance between the two rollers needs to be extremely small. At this time, impurities in the water flow can easily clog the gap between the rollers during long-term screening, or too many fry can enter the gap between the rollers and cause blockage, which can easily lead to inaccurate sorting or even damage to a large number of fry. Furthermore, when screening flat fry, the fry may fall into the smaller collection tank because their body thickness is smaller than the gap when lying on their side, which will also affect the accuracy of grading. Summary of the Invention

[0003] This invention proposes a fish fry screening device for aquaculture, which solves the problem in related technologies where roller grading machines require a very small distance between the two rollers when screening ultra-small fish fry. In this case, impurities in the water flow can easily clog the gap between the rollers during long-term screening, or too many fish fry can enter the gap between the rollers and cause blockage, which can lead to inaccurate sorting or even damage to a large number of fish fry.

[0004] The technical solution of the present invention is as follows: A fish fry screening device for aquaculture includes a support platform, a double-layer screening mechanism, a water flow impact component, a transmission component, a discharge mechanism, a residual material collection mechanism, and a circulating screening component. The dual-layer screening mechanism is installed on the support platform; The dual-layer screening mechanism includes a water flow impact component and a transmission component; The discharge mechanism is installed between the double-layer screening mechanism and the support platform; The waste material collection mechanism is installed on one side of the support platform; The residual material collection mechanism includes a circulating screening component, which is used to circulate the screened fish fry water flow into the double-layer screening mechanism for further screening.

[0005] Preferably, the dual-layer screening mechanism includes a first mounting box, a second mounting box, a first screening roller, a second screening roller, and a guide pipe; The mounting box is fixedly connected to the support platform, and the mounting box is tilted. The second mounting box is fixedly connected to the top of the first mounting box, and the second mounting box is set at an angle. The screening roller is provided in multiple ways, and all of the screening rollers are rotatably connected inside the mounting box. The distance between the screening rollers is different. The screening roller 2 is provided in multiple ways, and all of the screening roller 2 are fixedly connected in the mounting box 2, with different distances between the multiple screening roller 2; The guide pipe is provided in multiple ways, and the multiple guide pipes are fixedly connected between the first mounting box and the second mounting box. A guide pipe is provided below the gap between every two screening rollers.

[0006] More preferably, the transmission assembly includes a motor, a first transmission wheel, a second transmission wheel, and a belt; The motor is provided in multiple ways, and each of the multiple motors is fixedly connected to the outer wall of the mounting box. The output ends of the multiple motors are respectively fixedly connected to the multiple screening rollers. The transmission wheel is provided in multiple ways, and each of the multiple transmission wheels is rotatably connected to the outer wall of the mounting box. The multiple transmission wheels are respectively fixedly connected to the output ends of the multiple motors. The transmission wheel 2 is provided in multiple ways, and all of the transmission wheels 2 are rotatably connected to the outer wall of the mounting box 2; The belt is provided in multiple ways, and each group of transmission wheel one and transmission wheel two is equipped with a belt.

[0007] Furthermore, the water flow impact assembly includes a water passage chamber, a rotating cover, a mounting cover, a water pump, a mounting groove, and a nozzle; The water passage cavity is provided in multiple ways, and the multiple water passage cavities are respectively opened in the multiple screening rollers; The rotating cover is provided in multiple ways, and the multiple rotating covers are respectively rotatably connected to the inner wall of the multiple water passage chambers; The mounting cover is fixedly connected to the side wall of the second mounting box; The water pump is provided in multiple ways, and the multiple water pumps are fixedly connected inside the mounting cover. The output ends of the multiple water pumps are respectively connected to the multiple rotating covers. The mounting slots are provided in multiple ways, and the multiple mounting slots are divided into multiple groups. Each set of mounting slots is opened on the side wall of each screening roller 2. The nozzles are provided in multiple groups, and each group of nozzles is fixedly connected to a group of nozzles in each mounting slot. Each group of nozzles is connected to multiple water passage chambers.

[0008] Furthermore, the discharge mechanism includes a discharge box, a ramp, and a discharge port; The discharge box is provided in multiple ways, and each three screening rollers of the second type are fixedly connected below each other at equal intervals; The ramps are provided in multiple ways, and the multiple ramps are respectively fixedly connected to the inner bottom wall of the multiple discharge boxes; The discharge port is provided in multiple ways, and the bottom of each discharge box is connected to a discharge port. The multiple discharge ports are opened on one side of the slope in the direction of inclination.

[0009] Furthermore, the waste material collection mechanism includes a collection trough, an inclined plate, and a collection through hole; The collection trough is fixedly connected to the second mounting box; The inclined plate is fixedly connected inside the collection trough; The collection through hole is located at the bottom end of the collection tank.

[0010] Based on the above scheme, preferably, the cyclic screening component includes a mounting plate, rollers, telescopic frame, transfer trough and electric cylinder; The mounting plate is located below the collection groove; The rollers are provided in multiple manner, and the multiple rollers are rotatably connected to the bottom end of the mounting plate; One end of the telescopic frame is rotatably connected to the mounting plate; The transfer trough is located above the telescopic frame, and the bottom end of the transfer trough is rotatably connected to the other end of the telescopic frame. The collection through hole faces the opening direction of the transfer trough. The electric cylinder is provided in multiple ways, and each electric cylinder is fixedly connected to the top of the mounting plate. The output end of each electric cylinder is fixedly connected to the bottom end of the transfer groove.

[0011] The working principle and beneficial effects of this invention are as follows: 1. In this invention, the double-layer screening mechanism can perform a second screening after the initial screening of fish fry. This second screening will remove fish fry that have been misjudged and fallen into a small-sized fish fry pond due to misjudgment, such as flat fish fry, thereby increasing the accuracy of fish fry screening. 2. In this invention, the water flow impact component can intermittently flush the gaps where the fish fry fall. During flushing, the water flow impacts the fish fry, causing them to move within the gaps under the power of the water flow. This prevents the rollers from damaging the fish fry due to their accumulation. At the same time, the water flow can prevent impurities in the water flow from clogging the gaps and affecting the efficiency of the fish fry screening process. 3. In this invention, the residual material collection mechanism and the circulating screening component work together to collect the screened water and transport it back to the feeding port for screening again, thereby reducing the occurrence of screen leakage. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the entire structure of the present invention; Figure 3 This is a schematic diagram of the structure of the water flow impact component of the present invention; Figure 4 This is a schematic diagram of the residual material collection mechanism of the present invention; Figure 5 This is a schematic diagram of the structure of the screening roller II of the present invention; Figure 6 This is a schematic diagram of the cyclic screening component structure of the present invention; Figure 7 This is a schematic diagram of the discharge box structure of the present invention.

[0014] In the diagram: 1. Support platform; 2. Mounting box one; 3. Mounting box two; 4. Screening roller one; 5. Screening roller two; 6. Guide pipe; 7. Motor; 8. Drive wheel one; 9. Drive wheel two; 10. Belt; 11. Water passage chamber; 12. Rotating cover; 13. Mounting cover; 14. Water pump; 15. Mounting groove; 16. Nozzle; 17. Discharge box; 18. Slope; 19. Discharge port; 20. Collection trough; 21. Inclined plate; 22. Collection through hole; 23. Mounting plate; 24. Roller; 25. Telescopic frame; 26. Transfer trough; 27. Electric cylinder. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0016] like Figures 1-7As shown in the figure, this embodiment proposes a fish fry screening device for aquaculture, including a support platform 1, a double-layer screening mechanism, a water flow impact component, a transmission component, a discharge mechanism, a residual material collection mechanism, and a circulating screening component. The double-layer screening mechanism is installed on the support platform 1, and includes the water flow impact component and the transmission component. The discharge mechanism is installed between the double-layer screening mechanism and the support platform 1. The residual material collection mechanism is installed on one side of the support platform 1, and includes a circulating screening component for circulating the screened fish fry water back into the double-layer screening mechanism. In the second screening, the fish fry enter the double-layer screening mechanism with the water flow. After double-layer screening, the fish fry are graded and collected. Finally, the residual material collection mechanism collects the water flow into the circulating screening component. The circulating screening component puts the water flow back into the double-layer screening mechanism, which can quickly put the fish fry that may have been missed into the water flow for a second screening. The double-layer screening mechanism and the water flow impact component work together to reduce the occurrence of mis-screening. In addition, the water flow impact component impacts the gaps in the double-layer screening mechanism, which can clear the gaps and prevent blockages from affecting the sorting. At the same time, it can also reduce the damage to the fish fry caused by the accumulation of fish fry.

[0017] The double-layer screening mechanism includes mounting box 1 (2), mounting box 2 (3), screening roller 1 (4), screening roller 2 (5), and guide pipe 6. Mounting box 1 (2) is fixedly connected to support platform 1 and is tilted. Mounting box 2 (3) is fixedly connected to the top of mounting box 1 (2) and is also tilted. Multiple screening rollers 1 (4) are rotatably connected inside mounting box 1 (2), with varying distances between them. Multiple screening rollers 2 (5) are fixedly connected inside mounting box 2 (3), with varying distances between them. The guide pipe 6... Multiple pipes 6 are provided, and multiple guide pipes 6 are fixedly connected between the first installation box 2 and the second installation box 3. A guide pipe 6 is provided below the gap between every two screening rollers 2 5. The fish fry first flow onto the screening rollers 2 5, and the screening rollers 2 5 perform a screening of the fish fry. The screened fish fry enter the first installation box 2 again through each guide pipe 6. The screening rollers 1 4 screen the graded fish fry again. Fish fry that are of the correct size fall through the corresponding gap, while fish fry that are not of the correct size are conveyed to the screening rollers 1 4 with a larger gap for screening. The two-layer screening can greatly improve the grading accuracy.

[0018] The transmission assembly includes a motor 7, a first transmission wheel 8, a second transmission wheel 9, and a belt 10. Multiple motors 7 are fixedly connected to the outer wall of the mounting box 2, and their output ends are fixedly connected to multiple screening rollers 4. Multiple first transmission wheels 8 are rotatably connected to the outer wall of the mounting box 2, and their output ends are fixedly connected to the motor 7. Multiple second transmission wheels 9 are rotatably connected to the outer wall of the mounting box 3. Multiple belts 10 are provided, with one belt 10 connecting each set of first transmission wheels 8 and second transmission wheels 9. The multiple motors 7 start synchronously, driving the multiple first transmission wheels 8 to rotate. The multiple first transmission wheels 8, through the belts 10, drive the corresponding multiple second transmission wheels 9 to rotate, thus causing the multiple screening rollers 4 and multiple second screening rollers 5 to rotate simultaneously for grading and screening of fish fry.

[0019] The water flow impact assembly includes a water passage chamber 11, a rotating cover 12, a mounting cover 13, a water pump 14, a mounting groove 15, and a nozzle 16. Multiple water passage chambers 11 are provided, each located within a plurality of screening rollers 5. Multiple rotating covers 12 are provided, each rotatably connected to the inner wall of a plurality of water passage chambers 11. The mounting cover 13 is fixedly connected to the side wall of the mounting box 3. Multiple water pumps 14 are provided, each fixedly connected within the mounting cover 13, with their output ends communicating with the multiple rotating covers 12. Multiple mounting grooves 15 are provided, divided into multiple groups, each screening roller... Each of the two 5 screen rollers has a set of mounting slots 15. Multiple nozzles 16 are provided, and the multiple nozzles 16 are divided into multiple groups. Each mounting slot 15 has a fixed connection to a set of nozzles 16. Each group of nozzles 16 is connected to multiple water passage chambers 11. The input end of the water pump 14 is connected to the water source. When the water pump 14 is started, the water pump 14 pumps water into the water passage chamber 11. Due to the setting of the rotating cover 12, the output end of the water pump 14 will not rotate with the screen roller 25 and affect the water supply of the water pump 14. The water in the water passage chamber 11 is sprayed out through the nozzles 16. The high-pressure water flow can impact the gap of the screen roller 25 to prevent blockage caused by too many fish fry or impurities in the water.

[0020] The discharge mechanism includes a discharge box 17, a ramp 18, and a discharge port 19. There are multiple discharge boxes 17, and each discharge box 17 is fixedly connected below every three screening rollers 2 5 at equal intervals. There are multiple ramps 18, which are fixedly connected to the inner bottom wall of multiple discharge boxes 17. There are multiple discharge ports 19, and each discharge box 17 has a discharge port 19 connected to its bottom end. The multiple discharge ports 19 are located on one side of the inclined direction of the ramp 18. After the fish fry are graded, fish fry of different sizes enter different discharge boxes 17 and flow out through the discharge ports 19 under the gravity of the ramp 18.

[0021] The waste material collection mechanism includes a collection trough 20, an inclined plate 21, and a collection through hole 22. The collection trough 20 is fixedly connected to the mounting box 2 3, the inclined plate 21 is fixedly connected inside the collection trough 20, and the collection through hole 22 is opened at the bottom of the collection trough 20. The remaining water flows into the collection trough 20 and enters the transfer trough 26 through the collection through hole 22.

[0022] Finally, the circulating screening assembly includes a mounting plate 23, rollers 24, a telescopic frame 25, a transfer trough 26, and an electric cylinder 27. The mounting plate 23 is located below the collection trough 20. Multiple rollers 24 are rotatably connected to the bottom of the mounting plate 23. One end of the telescopic frame 25 is rotatably connected to the mounting plate 23. The transfer trough 26 is located above the telescopic frame 25, and its bottom end is rotatably connected to the other end of the telescopic frame 25. The collection through-hole 22 faces the opening of the transfer trough 26. The electric cylinder 27 is equipped with... Multiple electric cylinders 27 are fixedly connected to the top of the mounting plate 23. The output ends of the multiple electric cylinders 27 are fixedly connected to the bottom of the transfer trough 26. After the transfer trough 26 is filled, the circulating screening component is pushed out from below the collection trough 20. The electric cylinders 27 are activated, pushing the transfer trough 26 to rise. The telescopic frame 25 follows the extension of the transfer trough 26 to maintain stability. The transfer trough 26 is raised to the same height as the mounting box 23, which makes it convenient to inject the water and fish fry in the transfer trough 26 back into the double-layer screening mechanism for screening again.

[0023] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fish fry screening device for aquaculture, comprising a support platform (1), characterized in that, Also includes: A double-layer screening mechanism is installed on the support platform (1); The dual-layer screening mechanism includes: Mounting box 1 (2), which is fixedly connected to the support platform (1) and is set at an angle; Mounting box two (3), which is fixedly connected to the top of mounting box one (2), and mounting box two (3) is set at an angle; Screening roller 1 (4), there are multiple screening rollers 1 (4), all of which are rotatably connected in the mounting box 1 (2), and the distance between the multiple screening rollers 1 (4) is different; Screening roller 2 (5), there are multiple screening roller 2 (5), all of which are fixedly connected in the mounting box 2 (3), and the distance between the multiple screening roller 2 (5) is different; A guide pipe (6) is provided, and multiple guide pipes (6) are fixedly connected between the first mounting box (2) and the second mounting box (3). A guide pipe (6) is provided below the gap between every two screening rollers (5). The dual-layer screening mechanism includes a water flow impact component and a transmission component; The transmission assembly includes: Motor (7), multiple motors (7) are provided, and multiple motors (7) are fixedly connected to the outer wall of the mounting box (2), and the output ends of multiple motors (7) are fixedly connected to multiple screening rollers (4); A transmission wheel (8) is provided in multiple ways. All of the transmission wheels (8) are rotatably connected to the outer wall of the mounting box (2). The transmission wheels (8) are respectively fixedly connected to the output ends of the motors (7). The transmission wheel 2 (9) is provided in multiple ways, and all of the transmission wheels 2 (9) are rotatably connected to the outer wall of the mounting box 2 (3); Belt (10), multiple belts (10) are provided, and each group of transmission wheel one (8) and transmission wheel two (9) is equipped with a belt (10). The water flow impact component includes: Water passage cavity (11), multiple water passage cavities (11) are provided, and multiple water passage cavities (11) are respectively opened in multiple screening rollers (5); Rotating cover (12), multiple rotating covers (12) are provided, and multiple rotating covers (12) are respectively rotatably connected to the inner wall of multiple water passage chambers (11); Mounting cover (13), which is fixedly connected to the side wall of mounting box two (3); A water pump (14) is provided in multiple ways. The multiple water pumps (14) are fixedly connected inside the mounting cover (13). The output ends of the multiple water pumps (14) are respectively connected to the multiple rotating covers (12). The mounting slots (15) are provided in multiple groups, and each of the screening rollers (5) has a set of mounting slots (15) on its side wall. The nozzle (16) is provided in multiple groups. Each of the mounting slots (15) is fixedly connected to a group of nozzles (16), and each group of nozzles (16) is connected to multiple water passages (11). The discharge mechanism is installed between the double-layer screening mechanism and the support platform (1); Waste material collection mechanism, which is installed on one side of the support platform (1); The residual material collection mechanism includes a circulating screening component, which is used to circulate the screened fish fry water flow into the double-layer screening mechanism for further screening. The waste material collection mechanism includes: Collection trough (20), which is fixedly connected to the second mounting box (3); Inclined plate (21), the inclined plate (21) is fixedly connected inside the collection trough (20); A collection through hole (22) is provided at the bottom end of the collection groove (20); The cyclic filtering component includes: Mounting plate (23), which is located below the collection groove (20); Rollers (24), multiple rollers (24) are provided, and multiple rollers (24) are rotatably connected to the bottom end of the mounting plate (23); Telescopic frame (25), one end of which is rotatably connected to the mounting plate (23); The transfer groove (26) is located above the telescopic frame (25), and the bottom end of the transfer groove (26) is rotatably connected to the other end of the telescopic frame (25). The collection through hole (22) faces the opening direction of the transfer groove (26). Electric cylinder (27), multiple electric cylinders (27) are provided, and multiple electric cylinders (27) are fixedly connected to the top of the mounting plate (23), and the output end of multiple electric cylinders (27) is fixedly connected to the bottom end of the transfer groove (26).

2. The fish fry screening device for aquaculture according to claim 1, characterized in that, The discharge mechanism includes: Discharge box (17), there are multiple discharge boxes (17), and each of the three screening rollers (5) with the same interval distance is fixedly connected to a discharge box (17). A ramp (18) is provided, and the ramps (18) are respectively fixedly connected to the inner bottom wall of the multiple discharge boxes (17); The discharge port (19) is provided in multiple ways. Each discharge box (17) has a discharge port (19) connected to its bottom end. The multiple discharge ports (19) are opened on one side of the inclined direction of the slope (18).

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