Large-water-area fishery fry enhancement and release device

Abstract

The invention discloses a large-water-area fishery fry enhancement and release device, and relates to the technical field of enhancement and release, and the large-water-area fishery fry enhancement and release device comprises an external driving mechanism which is erected on one side of a box body; the external driving mechanism is connected with a partition plate adjusting mechanism and a shielding mechanism; the shielding mechanism is mounted at the upper port of the box body; the device has the beneficial effects that different water tank culture environments are manually selected according to different types of cultured fish fries, shallow-water fish fries are cultured on the upper layer of the water tank, and deep-water fish fries are cultured on the lower layer of the water tank, and when the culture box is used for culturing the deep-water fish fries, the shielding cloth at the upper end opening of the water tank is unfolded; the water tank is used for reducing the contact area between the water surface and the air so as to reduce the oxygen content of water, meanwhile, in the process of throwing fry into a water area, the fry are gradually guided into the throwing opening through the movable guide plate, and the situation that the fry are retained in the water tank, the final throwing density is reduced, and the throwing quality is affected is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of fish stocking technology, and in particular to a fish fry stocking device for large-scale aquaculture. Background Technology

[0002] Artificial stock enhancement is the direct release or introduction of eggs, larvae, or adults of aquatic organisms into natural waters such as oceans, tidal flats, rivers, lakes, and reservoirs using artificial methods to restore or increase the population size and improve and optimize the community structure of the waters.

[0003] Before releasing fish fry, they need to undergo wilding training. Wilding training (also known as domestication training or adaptation training) refers to the process of gradually adapting artificially bred fish fry to wild survival conditions by simulating the natural environment. Its core objective is to improve the survival rate, feeding ability, and stress resistance after release, and reduce mortality or poor growth caused by sudden environmental changes.

[0004] Different living environments need to be simulated for different fish species (in deep and shallow waters), and the oxygen environment required by different fish species also needs to be simulated. When releasing the fry into the water, the fry are in an active state, and some fry may remain in the incubator, resulting in a decrease in the release density and affecting the release quality. Summary of the Invention

[0005] In this section, as well as in the abstract and title of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract, and the title of this application, and such simplifications or omissions shall not be used to limit the scope of the invention.

[0006] In view of the problems existing in the above or prior art, the present invention is proposed.

[0007] Therefore, the purpose of this invention is to provide a fish fry propagation and release device for large-scale aquatic fisheries, which solves the above-mentioned problems.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fish fry propagation and release device for large water areas, comprising a box for temporarily storing fish fry, two pumping mechanisms for conveying water of different depths into the box, and two release pipes for releasing fish fry into waters of different depths, the release pipes being connected to the interior of the box, and the connection openings of the two release pipes to the box being at different heights; An external drive mechanism is mounted on one side of the housing; an adjusting partition mechanism and a blocking mechanism are connected to the external drive mechanism; the blocking mechanism is installed at the upper port of the housing. The housing is equipped with a guide mechanism, which includes a slide rail, a movable guide plate, and a second lead screw; the movable guide plate is movably connected to the second lead screw in the middle. The slide rail is divided into two sections, one straight and the other curved; Both ends of the movable guide plate can slide along the slide rail, and both ends of the movable guide plate are connected to the traction mechanism; when the movable guide plate moves on the second lead screw, both ends of the movable guide plate move along the straight section of the slide rail; under the action of the traction mechanism, both ends of the movable guide plate move along the curved section of the slide rail. The slide rail has a sliding groove inside, and a spring is installed in the curved section of the groove. The overall length of the spring is the same as the curved length of the groove. The two ends of the movable guide plate are slidably installed in the grooves of the slide rail via movable joints.

[0009] As a preferred embodiment of the large-area fish fry propagation and release device of the present invention, the external drive mechanism includes a drive motor, the output end of which is connected to one end of a first long shaft, the other end of which is connected to one end of a second long shaft via a bevel gear set, the outer side of which is mounted on the ground via a stand; the other end of which is connected to one end of a first lead screw via the bevel gear set, the first lead screw is mounted on the outer side of the housing via a lead screw bracket, the first lead screw and the lead screw bracket are movably connected, and a limiting rod is provided on the side of the first lead screw.

[0010] As a preferred embodiment of the large-area fish fry propagation and release device of the present invention, wherein: the adjusting partition mechanism includes a movable shelf, the movable shelf is placed inside the box, and one end of a pull rope is connected to both ends of the movable shelf, the pull rope is connected to the first roller after passing over the first pulley; The first pulley is installed at the upper edge of the box; the first roller is provided with a coil spring inside, one end of the coil spring is connected to the inner wall of the first roller, and the other end is connected to the first long shaft; the first roller is sleeved on the first long shaft, and the position of the first roller remains unchanged but it can rotate.

[0011] As a preferred embodiment of the large-scale aquatic fish fry propagation and release device of the present invention, wherein: the shielding mechanism includes a movable long rod, the movable long rod is placed at the upper port of the box, a movable joint is installed at one end of the movable long rod, one end of the shielding cloth is connected to the side of the movable long rod, the movable joint is movably connected to the first lead screw, and the limiting rod passes through the movable joint; The covering cloth is stored in a roller inside the storage box, and coil springs are installed at both ends of the roller.

[0012] As a preferred embodiment of the large-scale aquatic fish fry propagation and release device of the present invention, the guiding mechanism further includes a fixed layer plate, which is fixed to the inner wall of the box body, and the outer wall of the movable layer plate is attached to the inner wall of the fixed layer plate. The guiding mechanism also includes a column, which is erected inside the housing and the lower end of the column is fixed to the bottom surface of the housing; The slide rail is installed on the upper end of the fixed shelf; the slide rail is located on both sides inside the box; the moving guide plate is located on the opposite side of the water outlet of the box; the moving guide plate moves between the two slide rails.

[0013] As a preferred embodiment of the large-scale aquatic fish fry propagation and release device of the present invention, the movable guide plate includes a connecting plate and a deflecting plate. The two sides of the connecting plate and the deflecting plate are connected by a rotating shaft. The other end of the two deflecting plates is provided with a movable joint. The movable joint is provided with a roller, which is placed in the groove of the slide rail.

[0014] As a preferred embodiment of the large-area fish fry propagation and release device of the present invention, wherein: a vertical plate is installed on the upper surface of the fixed layer plate, the upper end of the vertical plate is connected to the bottom surface of the slide rail, and one side of the vertical plate is connected to the inner wall of the box body through a connecting block.

[0015] As a preferred embodiment of the large-scale aquatic fish fry propagation and release device of the present invention, the traction mechanism includes a traction rope, one end of which is connected to the movable joint, and the other end of which passes over two second pulleys and is wound around a second drum. A driven gear is installed on the bottom surface of the second drum. Another traction rope is wound around a third drum. The driven gear and the third drum mesh with a driving gear, and the driving gear is connected to the output end of a servo motor.

[0016] As a preferred embodiment of the large-scale aquatic fish fry propagation and release device of the present invention, wherein: the release pipe includes an upper release pipe and a lower release pipe, and the height difference between the outlets of the upper release pipe and the lower release pipe is at least 1 meter; The pumping mechanism includes two pumps, each of which is connected to an outlet pipe and an inlet pipe. There is a height difference between the inlets of the two inlet pipes and a height difference between the outlets of the two outlet pipes.

[0017] As a preferred embodiment of the large-area fish fry propagation and release device of the present invention, a movable baffle is provided at the connection between the release pipe and the box body. The movable baffle includes an electric telescopic rod and a baffle plate. The electric telescopic rod blocks the water outlet of the box body. The baffle plate is installed on the outer wall of the box body, and the movable end of the baffle plate is connected to one side of the electric telescopic rod.

[0018] The beneficial effects of this invention are as follows: This invention allows for the selection of different tank cultivation environments based on the different types of fish fry being cultured. Shallow-water fish fry are cultured in the upper layer of the tank, while deep-water fish fry are cultured in the lower layer. When the tank is used to cultivate deep-water fish fry, the shielding cloth at the upper port of the tank is unfolded to reduce the contact area between the water surface and the air, thereby reducing the oxygen content of the water. At the same time, during the process of releasing fish fry into the water, a moving guide plate is used to gradually guide the fish fry to the release port, effectively preventing the fish fry from remaining in the tank, which would lead to a decrease in the final release density and affect the release quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 A schematic diagram of a large-scale fish fry propagation and release device for fisheries. Figure 2 A side plan view of a fish fry propagation and release device for large-scale fisheries. Figure 3 Fish fry propagation and release device for large-scale fisheries Figure 1 Enlarged structural diagram at point A in the middle; Figure 4 Schematic diagram of the external drive mechanism for a fish fry propagation and release device in large waters; Figure 5 A schematic diagram of the internal structure of a fish fry propagation and release device for large-scale fisheries. Figure 6 A detailed schematic diagram of the internal structure of a fish fry propagation and release device for large-scale fisheries. Figure 7 Fish fry propagation and release device for large-scale aquaculture Figure 6 Enlarged structural diagram at point B.

[0020] Marked in the image: 100. Container body; 200. Dispensing pipe; 300. External drive mechanism; 400. Adjustable partition mechanism; 500. Shielding mechanism; 600. Guiding mechanism; 700. Pumping mechanism; 800. Movable baffle; 201. Upper dispensing pipe; 202. Lower dispensing pipe; 301. Drive motor; 302. First long shaft; 303. Bevel gear set; 304. Stand; 305. Second long shaft; 306. First lead screw; 307. Lead screw support; 308. Limiting rod; 401. Movable shelf; 402. Pull rope; 403. First pulley; 404. First roller; 405. Coil spring; 501. Moving long rod; 502. Shielding cloth; 503. Retractor Storage box; 504, movable joint; 601, slide rail; 602, movable guide plate; 603, column; 604, fixed shelf; 605, second lead screw; 606, traction mechanism; 701, water pump; 702, water outlet pipe; 703, water inlet pipe; 801, electric telescopic rod; 802, baffle; 6011, spring; 6021, connecting plate; 6022, deflection plate; 6023, movable joint; 6041, upright plate; 6042, connecting block; 6061, traction rope; 6062, second pulley; 6063, second roller; 6064, driving gear; 6065, driven gear; 6066, third roller; 6067, servo motor. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Reference Figures 1-6 This embodiment provides a fish fry propagation and release device for large-scale aquaculture, which includes a box 100 for temporarily storing fish fry, two pumping mechanisms 700 for conveying water of different depths into the box 100, and two release pipes 200 for releasing fish fry into waters of different depths. The release pipes 200 are connected to the inside of the box 100, and the connection openings of the two release pipes 200 and the box 100 are at different heights. Preferably, the container 100 has a height of at least 2.5 meters, and the specific volume is determined by the water area and the amount of water released at one time.

[0024] An external drive mechanism 300 is mounted on one side of the housing 100; an adjusting partition mechanism 400 and a blocking mechanism 500 are connected to the external drive mechanism 300; the blocking mechanism 500 is installed at the upper port of the housing 100. The housing 100 is equipped with a guide mechanism 600, which includes a slide rail 601, a movable guide plate 602, and a second lead screw 605; the movable guide plate 602 is movably connected to the second lead screw 605 in the middle. The slide rail 601 is divided into two sections, one straight and the other curved; Preferably, the curvature of the curved section of the slide rail 601 is centered at the connection between the column 603 and the second lead screw 605, and the diameter is the distance between the axis of the second lead screw 605 and the slide rail 601.

[0025] Both ends of the movable guide plate 602 can slide along the slide rail 601, and both ends of the movable guide plate 602 are connected to the traction mechanism 606; when the movable guide plate 602 moves on the second lead screw 605, both ends of the movable guide plate 602 move along the straight section of the slide rail 601; under the action of the traction mechanism 606, both ends of the movable guide plate 602 move along the curved section of the slide rail 601. The slide rail 601 has a sliding track groove inside, and a spring 6011 is installed in the curved section of the groove. The overall length of the spring 6011 is consistent with the curved length of the groove. The two ends of the movable guide plate 602 are slidably installed in the groove of the slide rail 601 through the movable joint 6023.

[0026] Preferably, slide rails 601 are provided in both the upper and lower layers of the fixed shelf 604, and the slide rail 601 below the fixed shelf 604 is fixed to the bottom surface of the box 100 through the upright plate 6041.

[0027] The external drive mechanism 300 includes a drive motor 301. The output end of the drive motor 301 is connected to one end of a first long shaft 302. The other end of the first long shaft 302 is connected to one end of a second long shaft 305 through a bevel gear set 303. The outer side of the first long shaft 302 is mounted on the ground through a stand 304. The other end of the second long shaft 305 is connected to one end of a first lead screw 306 through a bevel gear set 303. The first lead screw 306 is mounted on the outer side of the housing 100 through a lead screw bracket 307. The first lead screw 306 and the lead screw bracket 307 are movably connected. A limit rod 308 is provided on the side of the first lead screw 306.

[0028] The adjusting partition mechanism 400 includes a movable shelf 401, which is placed inside the housing 100. Both ends of the movable shelf 401 are connected to one end of a pull rope 402, which passes around the first pulley 403 and is connected to the first roller 404. The first pulley 403 is installed at the upper edge of the housing 100; the first roller 404 is provided with a coil spring 405 inside, one end of the coil spring 405 is connected to the inner wall of the first roller 404, and the other end is connected to the first long shaft 302; the first roller 404 is sleeved on the first long shaft 302, and the position of the first roller 404 remains unchanged but it can rotate.

[0029] Preferably, when the movable shelf 401 is pulled up from the fixed shelf 604 by the pull rope 402, the coil spring 405 is in a charged state. During the rotation of the first long shaft 302, the coil spring 405 gradually releases, and at the same time, the cover cloth 502 gradually moves and unfolds with the moving joint 504. As the first long shaft 302 rotates, the coil spring 405 returns to normal from being charged, and then the coil spring 405 charges up to its maximum extent again. At this time, the movable shelf 401 is pulled up to the highest position, and the cover cloth 502 is stretched to its maximum extent.

[0030] Preferably, the movable shelf 401 has an opening in the middle for placing the column 603.

[0031] The shielding mechanism 500 includes a movable long rod 501, which is located at the upper port of the housing 100. A movable joint 504 is installed at one end of the movable long rod 501. The side of the movable long rod 501 is connected to one end of the shielding cloth 502. The movable joint 504 is movably connected to the first lead screw 306. The limiting rod 308 passes through the movable joint 504. The covering cloth 502 is stored in the roller inside the storage box 503, and coil springs are installed at both ends of the roller.

[0032] The guiding mechanism 600 also includes a fixed shelf 604, which is fixed to the inner wall of the housing 100, and the outer wall of the movable shelf 401 is attached to the inner wall of the fixed shelf 604. The guiding mechanism 600 also includes a column 603, which is erected inside the housing 100 and whose lower end is fixed to the bottom surface of the housing 100. A slide rail 601 is installed on the upper end of the fixed shelf 604; the slide rail 601 is located on both sides inside the tank 100; the movable guide plate 602 is located on the opposite side of the outlet of the tank 100; the movable guide plate 602 moves between the two slide rails 601.

[0033] Preferably, the slide rail 601 has a protrusion at the side opening to prevent the spring 6011 from coming out of the groove during compression.

[0034] The movable guide plate 602 includes a connecting plate 6021 and a deflection plate 6022. The two sides of the connecting plate 6021 and the deflection plate 6022 are connected by a rotating shaft. The other end of each of the two deflection plates 6022 is provided with a movable joint 6023. The movable joint 6023 is provided with a roller, which is placed in the groove of the slide rail 601.

[0035] A vertical plate 6041 is installed on the upper surface of the fixed shelf 604. The upper end of the vertical plate 6041 is connected to the bottom surface of the slide rail 601. One side of the vertical plate 6041 is connected to the inner wall of the box 100 through the connecting block 6042.

[0036] The traction mechanism 606 includes a traction rope 6061, one end of which is connected to a movable joint 6023. The other end of the traction rope 6061 passes over two second pulleys 6062 and is wound around a second roller 6063. A driven gear 6065 is mounted on the bottom surface of the second roller 6063. Another traction rope 6061 is wound around a third roller 6066. The driven gear 6065 and the third roller 6066 mesh with a driving gear 6064, which is connected to the output end of a servo motor 6067.

[0037] The delivery pipe 200 includes an upper delivery pipe 201 and a lower delivery pipe 202, and the height difference between the outlets of the upper delivery pipe 201 and the lower delivery pipe 202 is at least 1 meter. The pumping mechanism 700 includes two pumps 701, each of which is connected to an outlet pipe 702 and an inlet pipe 703. There is a height difference between the inlets of the two inlet pipes 703 and a height difference between the outlets of the two outlet pipes 702.

[0038] Preferably, the inlet pipe 703, which draws water from shallow water, delivers water to the upper area of ​​the tank 100 through the outlet pipe 702. Similarly, water from deep water is drawn up and delivered to the lower area of ​​the tank 100.

[0039] A movable baffle 800 is also provided at the connection between the discharge pipe 200 and the tank 100. The movable baffle 800 includes an electric telescopic rod 801 and a baffle 802. The electric telescopic rod 801 blocks the outlet of the tank 100. The baffle 802 is installed on the outer wall of the tank 100, and the movable end of the baffle 802 is connected to one side of the electric telescopic rod 801.

[0040] When in use, if the fish are deep-water species, the drive motor 301 is started, the movable shelf 401 is pulled up, the drive motor 301 is turned off, the cover cloth 502 is unfolded, and the movable shelf 401 is pulled to the highest position. Then, water is pumped from the deep water area by the pumping mechanism 700 and then lake water is poured into the tank 100. Then, the fish fry to be cultivated are manually put into the tank 100. Then, water is poured into the tank 100 again by the pumping mechanism 700 until the water surface is level with the bottom surface of the cover cloth 502. After the fish fry have been raised, open the lower movable baffle 800 and start the drive motor of the second lead screw 605. The moving guide plate 602 moves slowly along the second lead screw 605. When the moving guide plate 602 moves to the connection between the column 603 and the second lead screw 605, the motor of the second lead screw 605 is turned off. At this time, the servo motor 6067 is started, the spring 6011 is tightened first, and then the movable joint 6023 is pulled. The deflection plate 6022 begins to deflect until one end of the deflection plate 6022 stops moving and the spring 6011 is compressed to its maximum extent, thus completing the release of the fish fry. Finally, restore the device. When releasing shallow-water fish fry, the movable shelf 401 and the fixed shelf 604 isolate the fry in the upper area of ​​the tank. When releasing the fry, start the motor of the upper second lead screw 605 and repeat the above operation. Finally, restore the device.

[0041] In summary, different tank environments are selected based on the species of fish being cultured. Shallow-water fish are cultured in the upper layer of the tank, while deep-water fish are cultured in the lower layer. When the tank is used to culture deep-water fish, the shielding cloth 502 at the upper port of the tank is unfolded to reduce the contact area between the water surface and the air, thereby reducing the oxygen content of the water. At the same time, during the process of releasing the fish fry into the water, the moving guide plate 602 is used to gradually guide the fish fry to the release port, effectively preventing the fish fry from remaining in the tank, which would reduce the final release density and affect the release quality.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A fish fry propagation and release device for large-area fisheries, comprising a box (100) for temporarily storing fish fry, two pumping mechanisms (700) for conveying water at different depths into the box (100); and two release pipes (200) for releasing fish fry into water at different depths, wherein the release pipes (200) are connected to the interior of the box (100), and the two release pipes (200) are connected to the box (100) at different heights; Its features are: Includes an external drive mechanism (300) mounted on one side of the housing (100); the external drive mechanism (300) is connected to an adjusting partition mechanism (400) and a blocking mechanism (500); the blocking mechanism (500) is installed at the upper port of the housing (100); The housing (100) is equipped with a guide mechanism (600), which includes a slide rail (601), a movable guide plate (602), and a second lead screw (605); the movable guide plate (602) is movably connected to the second lead screw (605) in the middle. The slide rail (601) is divided into two sections, one straight and the other curved; Both ends of the movable guide plate (602) can slide along the slide rail (601), and both ends of the movable guide plate (602) are connected to the traction mechanism (606); when the movable guide plate (602) moves on the second lead screw (605), both ends of the movable guide plate (602) move along the straight section of the slide rail (601); under the action of the traction mechanism (606), both ends of the movable guide plate (602) move along the curved section of the slide rail (601); The slide rail (601) has a sliding track groove inside, and a spring (6011) is provided in the curved section of the groove. The overall length of the spring (6011) is consistent with the curved length of the groove. The two ends of the movable guide plate (602) are slidably installed in the groove of the slide rail (601) through the movable joint (6023).

2. The fish fry propagation and release device for large-scale fisheries as described in claim 1, characterized in that: The external drive mechanism (300) includes a drive motor (301), the output end of which is connected to one end of a first long shaft (302), the other end of which is connected to one end of a second long shaft (305) via a bevel gear set (303), the outer side of which is mounted on the ground via a stand (304); the other end of which is connected to one end of a first lead screw (306) via the bevel gear set (303), the first lead screw (306) is mounted on the outer side of the housing (100) via a lead screw bracket (307), the first lead screw (306) is movably connected to the lead screw bracket (307), and a limiting rod (308) is provided on the side of the first lead screw (306).

3. The fish fry propagation and release device for large-scale fisheries as described in claim 2, characterized in that: The adjusting partition mechanism (400) includes a movable shelf (401), which is placed inside the housing (100). Both ends of the movable shelf (401) are connected to one end of a pull rope (402), which passes around two first pulleys (403) and is then connected to a first roller (404). The first pulley (403) is installed at the upper edge of the housing (100); the first roller (404) is provided with a coil spring (405) inside, one end of the coil spring (405) is connected to the inner wall of the first roller (404), and the other end is connected to the first long shaft (302); the first roller (404) is sleeved on the first long shaft (302), and the position of the first roller (404) does not change but can rotate.

4. The fish fry propagation and release device for large-scale fisheries as described in claim 2, characterized in that: The shielding mechanism (500) includes a movable long rod (501), which is placed at the upper port of the housing (100). A movable joint (504) is installed at one end of the movable long rod (501), and one end of the shielding cloth (502) is connected to the side of the movable long rod (501). The movable joint (504) is movably connected to the first lead screw (306), and the limiting rod (308) passes through the movable joint (504). The shielding cloth (502) can be stored in a roller inside the storage box (503). The roller is equipped with coil springs at both ends to automatically wind up the shielding cloth (502).

5. The fish fry propagation and release device for large-scale fisheries as described in claim 3, characterized in that: The guiding mechanism (600) further includes a fixed shelf (604), which is fixed to the inner wall of the housing (100), and the outer wall of the movable shelf (401) is attached to the inner wall of the fixed shelf (604). The guiding mechanism (600) also includes a column (603), which is erected inside the housing (100), and the lower end of the column (603) is fixed to the bottom surface of the housing (100); The upper end of the fixed shelf (604) is equipped with the slide rail (601); the slide rail (601) is located on both sides inside the box (100); the moving guide plate (602) is located on the opposite side of the outlet of the box (100); the moving guide plate (602) moves between the two slide rails (601).

6. The fish fry propagation and release device for large-scale fisheries as described in claim 1, characterized in that: The movable guide plate (602) includes a connecting plate (6021) and a deflection plate (6022). The two sides of the connecting plate (6021) and the deflection plate (6022) are connected by a rotating shaft. The other end of the two deflection plates (6022) is provided with a movable joint (6023). The movable joint (6023) is provided with a roller, which is placed in the groove of the slide rail (601).

7. The fish fry propagation and release device for large-scale fisheries as described in claim 5, characterized in that: A vertical plate (6041) is installed on the upper surface of the fixed shelf (604). The upper end of the vertical plate (6041) is connected to the bottom surface of the slide rail (601). One side of the vertical plate (6041) is fixed to the inner wall of the box (100) by a connecting block (6042).

8. The fish fry propagation and release device for large-scale fisheries as described in claim 6, characterized in that: The traction mechanism (606) includes a traction rope (6061), one end of which is connected to the movable joint (6023), and the other end of which passes over two second pulleys (6062) and is wound around a second roller (6063). A driven gear (6065) is mounted on the bottom surface of the second roller (6063). Another traction rope (6061) is wound around a third roller (6066). The driven gear (6065) and the third roller (6066) mesh with a driving gear (6064), which is connected to the output end of a servo motor (6067).

9. The fish fry propagation and release device for large-scale fisheries as described in claim 1, characterized in that: The delivery pipe (200) includes an upper delivery pipe (201) and a lower delivery pipe (202), and the height difference between the outlets of the upper delivery pipe (201) and the lower delivery pipe (202) is at least 1 meter; The pumping mechanism (700) includes two pumps (701), each of which is connected to an outlet pipe (702) and an inlet pipe (703). There is a height difference between the inlets of the two inlet pipes (703) and a height difference between the outlets of the two outlet pipes (702).

10. The fish fry propagation and release device for large-scale fisheries as described in claim 1, characterized in that: A movable baffle (800) is also provided at the connection between the delivery pipe (200) and the box (100). The movable baffle (800) includes an electric telescopic rod (801) and a baffle (802). The electric telescopic rod (801) blocks the outlet of the box (100). The baffle (802) is installed on the outer wall of the box (100), and the movable end of the baffle (802) is connected to one side of the electric telescopic rod (801).

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