Large-scale breeding and hatching net cage for marine fishes

Abstract

The utility model relates to a marine fish large-scale fry breeding incubation net cage, which comprises at least one incubation net cage, each incubation net cage comprises an outer cage body, an isolation flexible film is arranged at the position 1 / 3 away from the bottom in the outer cage body, a net bag is arranged in the outer cage body above the isolation flexible film, a through rotating main shaft is arranged in the outer cage body below the isolation flexible film, and the rotating main shaft is connected with the isolation flexible film. Fan blades are fixed on the rotating main shaft at intervals, the fan blades are oval, the rotating main shaft is located at the non-midpoint position of the long axis of the fan blades, and every two adjacent fan blades are symmetrically distributed with the rotating main shaft as the axis; one end of the rotating main shaft is connected with a transmission assembly; and the other end of the rotating main shaft extends into the adjacent hatching net cage. The fan blades which rotate along with the rotating main shaft to alternately jack up different positions of the bottom of the net bag are arranged at the bottom of the hatching net cage, so that roes deposited at the bottom of the net bag are turned over, oxygen deficit of the roes is avoided, the number of the roes placed in a single net cage can be properly increased, and the hatching scale is increased.

Description

Technical Field

[0001] This utility model relates to the field of marine fish hatching, and in particular to a large-scale seedling hatching cage for marine fish. Background Technology

[0002] In marine fish farming, the optimal method is to cultivate them in natural seawater, avoiding problems such as low egg hatching rates caused by poor aquatic environments. Generally, the density of marine fish eggs is greater than that of seawater, causing them to sink when released into the sea. Therefore, adult fish continuously agitate the eggs during incubation to ensure each egg receives contact with seawater and dissolved oxygen, thus guaranteeing successful hatching. However, in artificial breeding, effective egg-turning methods are lacking. Therefore, to prevent egg accumulation, the stocking density must be controlled, hindering large-scale farming and limiting production. Utility Model Content

[0003] The purpose of this application is to provide a large-scale breeding and hatching net cage for marine fish, which aims to solve the problems existing in the prior art.

[0004] This application provides a large-scale hatching and rearing net cage for marine fish, including at least one hatching net cage. The hatching net cage includes an outer box, with a flexible insulating membrane disposed inside the outer box at a distance of 1 / 3 from the bottom. A net bag is installed inside the outer box above the flexible insulating membrane, and a through rotating main shaft is disposed inside the outer box below the flexible insulating membrane. Fan blades are fixed at intervals on the rotating main shaft. The fan blades are elliptical, and the rotating main shaft is located at a point other than the midpoint of the long axis of the fan blades. Adjacent fan blades are symmetrically distributed about the rotating main shaft. One end of the rotating main shaft is connected to a transmission component, and the other end of the rotating main shaft extends into an adjacent hatching net cage.

[0005] Furthermore, the top of the outer casing is open, and a frame rod is provided on the top of the outer casing. The frame rod has the same shape as the top of the outer casing, and the net bag is fixed to the frame rod.

[0006] Furthermore, a water passage hole is provided on the side wall of the outer casing above the flexible membrane; a perforation is provided on the outer casing below the flexible membrane corresponding to the rotating main shaft.

[0007] Furthermore, a seal is provided between the perforation and the rotating spindle.

[0008] Furthermore, the transmission assembly includes a first bevel gear set installed at the end of the rotating spindle, which connects to a vertical drive rod. The upper end of the drive rod is connected to the motor via a second bevel gear set.

[0009] The beneficial effects of this invention are as follows: The bottom of the incubation net cage is equipped with fan blades that alternately lift different positions at the bottom of the net as the main shaft rotates, thereby turning over the fish eggs deposited at the bottom of the net and preventing oxygen deprivation. This allows for an appropriate increase in the number of eggs that can be placed in a single net cage, thus increasing the incubation scale. Secondly, the outer shell of this invention has water passage holes, allowing seawater to enter and exit, thus achieving natural seawater aquaculture. One main shaft can extend into multiple incubation net cages arranged side-by-side, and only one set of motors is needed, controlling energy consumption while increasing the number of aquaculture net cages, further expanding the aquaculture scale and increasing fish yield. Attached Figure Description

[0010] Figure 1 This is a schematic diagram showing the arrangement of multiple incubation cages.

[0011] Figure 2 This is a schematic diagram of the incubation cage structure.

[0012] Figure 3 This is a cross-sectional structural diagram of the incubation cage.

[0013] Figure 4 This is a schematic diagram of the rotating main shaft and fan blades.

[0014] In the picture:

[0015] 1. Hatching cage; 2. Outer shell; 3. Flexible insulating membrane; 4. Net bag; 5. Frame pole; 6. Water passage hole; 7. Rotating main shaft; 8. Perforation; 9. Fan blade; 10. First bevel gear set; 11. Drive rod; 12. Second bevel gear set; 13. Motor. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1 The illustrated marine fish large-scale fry hatching cage includes at least one hatching cage 1, with multiple hatching cages 1 arranged in a straight line. Figure 2 and Figure 3As shown, the hatching cage 1 includes an outer box 2, which is rectangular in shape and has an open top. A flexible insulating membrane 3 is fixed inside the outer box 2 at one-third of its length from the bottom. A net bag 4 is installed inside the outer box 2 above the flexible insulating membrane 3, and fish eggs are placed in the net bag 4. A support rod 5 is installed at the top of the outer box 2, and the support rod 5 has the same rectangular shape as the top of the outer box 2. The open end of the net bag 4 is fixed to the support rod 5, and the bottom of the net bag 4 rests on the flexible insulating membrane 3. Water passage holes 6 are provided on the side wall of the outer box 2 above the flexible insulating membrane 3. When the hatching cage 1 is placed in seawater, seawater from the outside can enter the outer box 2 through the water passage holes 6, thus simulating the environment of the fish eggs with the external marine environment, which is conducive to the hatching of the fish eggs.

[0018] A through-type rotating shaft 7 is installed inside the outer casing 2 below the flexible membrane 3, extending along the length of the outer casing 2. A perforation 8 is provided on the outer casing 2 below the flexible membrane 3 corresponding to the rotating shaft 7. The perforation 8 is connected to the rotating shaft 7 via a bearing, and a seal is provided between the perforation 8 and the rotating shaft 7. This creates an independent space between the area below the flexible membrane 3 and the interior of the outer casing 2, isolating it from the external seawater environment. This reduces the corrosion of the rotating shaft 7 by natural seawater and the adhesion of marine organisms to the rotating shaft 7, thereby extending its service life. After deployment, the space below the flexible membrane 3 is filled with brine of sterilization, low dissolved oxygen, and equal density to ensure equal water pressure above and below the flexible membrane 3. The flexible membrane 3 is preferably a waterproof fabric, which is inexpensive and readily available.

[0019] like Figure 3 and Figure 4 As shown, fan blades 9 are fixed at intervals on the rotating main shaft 7. The fan blades 9 are elliptical. The rotating main shaft 7 is located at a position other than the midpoint of the long axis of the fan blades 9. Two adjacent fan blades 9 are symmetrically distributed around the rotating main shaft 7, so that the fan blades 9 are in different heights. Thus, when the rotating main shaft 7 rotates, it alternately lifts the isolation flexible membrane 3 and the bottom of the net bag 4 at different positions, thereby turning over the fish eggs that have sunk to the bottom and preventing them from dying due to lack of oxygen caused by the accumulation of fish eggs.

[0020] One end of the rotating main shaft 7 is connected to a transmission component, and the other end of the rotating main shaft 7 extends into the adjacent hatching net cage 1. Thus, multiple hatching net cages 1 can be connected by rotating the main shaft 7 to achieve large-scale breeding.

[0021] like Figure 3As shown, the transmission assembly includes a first bevel gear set 10 installed at the end of the rotating main shaft 7. The rotating main shaft 7 is connected to a vertical drive rod 11 via the first bevel gear set 10. The upper end of the drive rod 11 extends above the sea surface and is connected to a motor 13 on shore via a second bevel gear set 12. A reducer is conventionally installed on the output shaft of the motor 13. Thus, a single motor 13 can drive the fan blades 9 inside multiple hatching net cages 1 connected to the same rotating main shaft 7 to rotate, turning the fish eggs inside the multiple hatching net cages 1. When installed underwater, the drive rod 11 and the first bevel gear set 10 are preferably sealed, and can be covered with a sealed isolation tube to prevent marine organisms from corroding the transmission assembly.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects.

Claims

1. A large-scale hatching net cage for marine fish larvae, characterized in that, The application relates to a hatching net box, which comprises at least one hatching net box, an outer box body, a flexible isolation film arranged at 1 / 3 of the bottom of the outer box body, a net bag arranged above the flexible isolation film, a rotating main shaft arranged through the outer box body below the flexible isolation film, and fan blades fixed on the rotating main shaft at intervals, wherein the fan blades are in an elliptical shape, the rotating main shaft is located at a non-middle point of the long axis of the fan blades, and the adjacent two fan blades are symmetrically distributed with the rotating main shaft as the axis; one end of the rotating main shaft is connected with a transmission assembly; and the other end of the rotating main shaft extends into the adjacent hatching net box.

2. The mass-scale hatchery net cage for marine fish according to claim 1, characterized in that, The top of the outer box body is open, a frame rod is arranged on the top of the outer box body, the frame rod is the same in shape as the top of the outer box body, and the net bag is fixed on the frame rod.

3. The mass-scale hatchery net cage for marine fish according to claim 1, wherein, A water passing hole is arranged on the side wall of the outer box body above the flexible isolation film; and a perforation is arranged on the outer box body below the flexible isolation film and corresponds to the rotating main shaft.

4. The mass-scale hatchery net cage for marine fish according to claim 3, wherein, A seal is arranged between the perforation and the rotating main shaft.

5. The mass-scale hatchery net cage for marine fish according to claim 1, wherein, The transmission assembly comprises a first bevel gear set arranged at the end of the rotating main shaft, a vertical driving rod connected through the first bevel gear set, and a motor drivingly connected with the upper end of the driving rod through a second bevel gear set.

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