CN107173283B - A kind of device for hatching fish eggs of genus subfamily and using method thereof - Google Patents

Abstract

The invention provides a device for hatching fish eggs of the subfamily Cenidae, which comprises a water tank and two incubation tanks, each of which is arranged in sequence from low to high; a water inlet pipe is arranged above the water tank, and the A water flow outlet is provided on one side of the water tank, and a water flow guide plate is arranged at the water flow outlet, and a bracket is arranged inside each of the incubation tanks, and an incubation cavity is arranged on the bracket, and the bracket and the incubation tank are provided with A water flow inlet is provided between one side of the tank; the water flow guide plate is located above the water flow inlet with the highest position; the other side of each hatching tank is provided with an overflow outlet, and the overflow outlet is provided with a guide flow plate. The device can not only effectively solve the problem of blocking the egg shell during the shell breaking stage of fish eggs, but also can effectively improve the dissolved oxygen amount and hatching rate, and is suitable for large-scale hatching and cultivation of seedlings. The present invention also provides a method for using the device for hatching fish eggs of the subfamily Cenidae, which is simple, easy to operate, and suitable for industrial application.

Description

A kind of device for hatching fish eggs of genus subfamily and using method thereof

technical field

The invention relates to an aquaculture equipment, in particular to a device for hatching fish eggs of the subfamily Scienidae and a method for using the same.

Background technique

The fishes of the subfamily Kelvin are fertilized in vitro and lay sticky eggs. In the existing fish reproduction production, fish with sticky eggs mostly use hatching tanks or hatching tanks for hatching. In the existing hatching tanks or hatching tanks, a mesh cloth is usually installed at the overflow to prevent the eggs from overflowing with the water flow. The design is very easy to cause the fish eggs to overflow due to the blockage of the mesh cloth caused by the large number of egg shells produced after the eggs break. A lot of work. In addition, the hatching of fish eggs of the subfamily Ceratidae has high requirements for dissolved oxygen and water quality, and the existing hatching equipment is difficult to achieve good hatching effect in these two aspects: the traditional hatching flow-making scheme mostly adopts the bottom-out water solution. The supply water lacks sufficient contact with oxygen, and the oxygen-enhancing effect is poor; while the pneumatic flow-making scheme has solved the problem of dissolved oxygen, but the water body cannot be effectively renewed, so it is difficult to achieve the best hatching effect for the subfamily of fishes.

In order to improve this situation, a series of solutions have been put forward for the problems of dissolved oxygen and water body renewal. For example, while the incubator is circulating, an oxygen-increasing pump and a filtration device are designed, which makes the whole incubator too complicated, not only increasing the The production and maintenance costs of the equipment also increase the risk of damage to the equipment. Most importantly, the above design does not effectively solve the problem that the egg membrane blocks the overflow port.

In order to solve the above problems, we seek a new technical solution for the flow-making method to meet the hatching requirements of the fertilized eggs of the subfamily of fishes.

SUMMARY OF THE INVENTION

The purpose of the present invention is to aim at the deficiencies of the prior art, thereby providing a simple design, strong practicability, low cost, can effectively solve the problem of egg shell blocking, improve the dissolved oxygen content and ensure good water quality. A device for hatching fish eggs. At the same time, the present invention also provides a method of using the device for hatching fish eggs of the subfamily Scienidae.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A device for hatching fish eggs of the subfamily Cenidae, which comprises a water tank and a plurality of incubation tanks, each of which is arranged in steps from low to high; a water inlet pipe is arranged above the water tank, and the water tank A water flow outlet is opened on one side of the water flow outlet, a water flow guide plate is arranged at the water flow outlet, a bracket is respectively arranged inside each of the hatching tanks, and an incubation cavity surrounded by a mesh is arranged on the upper part of the bracket. A water flow inlet is arranged between the bracket and one side of the hatching tank; the water flow guide plate is located above the water flow inlet of the hatching tank with the highest position, so that the water in the water tank flows through the water flow guide plate and flows into the highest position. A reversed water flow is formed in the hatching tank to drive the fish eggs in the hatching cavity to tumble; the other side of each hatching tank is respectively provided with an overflow outlet, and the overflow outlet is provided with a guide plate, The water in the higher-positioned hatching grooves in the adjacent two hatching grooves passes through its overflow outlet, flows through the baffles and flows into the lower-positioned hatching grooves to form a reverse flow to drive the said hatching grooves. The eggs in the hatching cavity tumble.

Based on the above, the diameter of the mesh in the mesh is smaller than the diameter of the fish eggs.

Based on the above, the water inlet pipe is provided with a flow control device.

Based on the above, the distance between the water outlet and the top of the water tank is 1/4 to 1/3 of the height of the side wall of the water tank; the distance between the overflow outlet and the top of the hatching tank is the side wall of the hatching tank. 1/4 to 1/3 of the height.

Based on the above, one end of the deflector is hinged with the bottom edge of the overflow outlet, and the other end of the deflector is provided with a first telescopic support rod, so as to adjust the length of the first telescopic support rod. Describe the angle of the deflector.

Based on the above, one end of the water flow guide plate is hinged with the bottom edge of the water flow outlet, and the other end of the water flow guide plate is provided with a second telescopic support rod, so as to adjust the length of the second telescopic support rod to adjust the The angle of the water flow deflector.

Based on the above-mentioned device for hatching fish eggs of the subfamily Cenidae, it further comprises a reservoir, and the reservoir is located below the overflow outlet of the lowest-positioned hatching tank.

Based on the above, a water pump is arranged inside the water reservoir, a water purification device is arranged in the water tank, and the water outlet of the water pump is connected to the water inlet pipe.

A kind of above-mentioned using method of the device for hatching of fish eggs of the subfamily genus, it comprises the following steps:

Take fish eggs and sprinkle them into the hatching cavity; connect the water inlet pipe with the water source, inject water into the water tank, adjust the water flow, so that the water fully contacts the air before falling into the hatching tank with the highest position, Increase the amount of dissolved oxygen, adjust the angle of the water flow guide plate to change the direction of the water flow to make the water flow fall into the hatching tank, generate a reverse flow, enter the hatching cavity from the bottom surface of the hatching cavity, and drive the fish eggs roll;

Continuous water injection, in the two adjacent hatching tanks, the water in the hatching tank with a higher position flows out from the overflow outlet and flows into the hatching tank with a lower position, so that the water is in the falling position. The lower hatching tank is in full contact with the air to increase the amount of dissolved oxygen, adjust the angle of the deflector to change the direction of the water flow, so that when the water flow falls into the hatching tank located at the lower position, a reversed water flow is generated, from The bottom surface of the hatching cavity enters the hatching cavity, and drives the fish eggs to roll;

Continue to inject water until the water in the hatching tank at the lowest position begins to flow out from the overflow outlet, and incubate for 3 to 5 days to obtain fry.

Based on the above, the step of obtaining the fry comprises: continuously injecting water until the water in the hatching tank at the lowest position starts to flow out from the overflow outlet, and the water flowing out from the overflow outlet is collected in a reservoir , a water pump is arranged in the reservoir, the water inlet pipe is disconnected from the water source, and then the water outlet of the water pump is connected with the water inlet pipe, so that the water inlet pipe is used for The water in the hatching device is continuously circulated and hatched for 3 to 5 days to obtain the fry.

Compared with the prior art, the present invention has outstanding substantive features and significant progress. Specifically, a device for hatching fish eggs of the subfamily Scienidae provided by the present invention includes a water tank and a plurality of hatching tanks. The water tank and The hatching tank forms a step from low to high, and the water tank is connected with a water inlet pipe; the water tank is provided with a water outflow outlet, and the hatching tank is provided with an overflow outlet, so that the water in the water tank flows into each place. in the hatching tank; in the course of use, this flow-making method makes the water flow fall into the hatching tank, generating a reverse water flow, and entering the hatching cavity, driving the water in the hatching cavity under the impact of the water flow. The fish eggs are rolled to avoid the hatching cavity being blocked by the egg shell, saving the workload of manual cleaning of the mesh, and solving the risk of egg and fry overflow caused by the water level rising after the egg shell is blocked without any manual intervention; When the water flow is circulated in the device for hatching fish eggs of the subfamily genus, there is no need for pipes, and the water flow can be fully contacted with the air, which greatly improves the dissolved oxygen in the water flow. The improvement of the method makes the device for hatching fish eggs of the genus genus suitable for the hatching of fish eggs of the genus genus, improves the hatching rate of the eggs of genus genus, and reduces the breeding cost of fish of the genus There is a reservoir under the overflow outlet of the hatching tank, and a water pump is arranged in the reservoir, and the water outlet of the water pump, the water purification device and the water inlet pipe are connected in sequence, so that the water flow in the device is continuous. Recycle and save water.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the structure of the water tank in the present invention.

Figure 3 is a schematic structural diagram of the incubation tank in the present invention.

FIG. 4 is a schematic structural diagram of the present invention in Embodiment 2

In the figure: 1. Water inlet pipe; 2. Water tank; 3. Bracket; 4. Water flow guide plate; 5. Second incubation tank; 6. Incubation cavity; 7. Guide plate; 8. Reservoir; 11. The second telescopic support rod; 13. Water purification device; 14. Water pump; 15. The first incubation tank; 16. The overflow outlet; 17. The first telescopic support rod.

Detailed ways

The technical solutions of the present invention will be further described in detail below through specific embodiments.

Example 1

As shown in Fig. 1, Fig. 2 and Fig. 3, a device for hatching fish eggs of the subfamily Scienidae comprises a rack and a water tank 2 fixed on the rack, a first hatching tank 15 and a first hatching tank 15. Two hatching tanks 5, the structure of the two hatching tanks is the same, the first hatching tank 15 and the second hatching tank 5 are arranged from low to high; A water outlet 10 is provided on the side, and a water flow guide plate 4 is arranged at the water outlet 10. The water flowing into the water tank 2 through the water inlet pipe 1 is collected to a certain depth and overflows from the water outlet 10 in the water tank 2. Flowing along the water flow guide plate 4, this process does not require pipes, the flowing water and the air are fully contacted, and the amount of dissolved oxygen in the water is effectively increased. Moreover, the water supply to the first hatching tank 15 and the second hatching tank 5 is simultaneously provided by one water tank 2, which can effectively improve the hatching efficiency and reduce the hatching cost.

The inside of the first incubation tank 15 and the second incubation tank 5 are respectively provided with a bracket 3, the upper part of the bracket 3 is provided with an incubation cavity 6 surrounded by a mesh cloth, and the five sides of the incubation cavity 6 are mesh. shape structure, the top is sealed, and it is convenient for water flow to enter and prevent fish eggs from flowing out; A water inlet is also provided between the bracket 3 and one side thereof; the other side of each hatching tank is provided with an overflow outlet 16, and the overflow outlet 16 is provided with a deflector 7; the water flow guide plate 4 Located above the water inlet of the second incubation tank 5, so that the water in the water tank 2 flows into the second incubation tank 5 through the water flow guide plate 4; the water flow at this time is rich in oxygen, and the water flow falls into During the second hatching tank 5, a reverse water flow is generated, thereby entering the hatching cavity 5, and under the impact of the water flow, the fish eggs in the hatching cavity 6 are driven to roll; the hatching cavity 5 is prevented from being smashed by the egg shell. Blockage saves the workload of manual cleaning of the mesh, and solves the risk of egg and fry overflow caused by the rise of the water level after the eggshell is blocked without any manual intervention.

The water in the second hatching tank 5 passes through the overflow outlet 16, flows through the deflector 7, and flows into the first hatching tank 15; when the water enters the hatching cavity 6, a reflex occurs. The water flow drives the fish eggs in this hatching cavity 6 to roll under the impact of the water flow; with this, it is ensured that the necessary oxygen and water flow for hatching fish eggs roll, avoiding that the hatching cavity 6 is blocked by the eggshell, saving manual cleaning of the net The workload of the cloth solves the risk of egg and fry overflow caused by the rise of the water level after the egg shell is blocked without any manual intervention.

During use, when the water flows in the device, there is no need for pipes, and the water can fully contact the air, which greatly improves the dissolved oxygen in the water. Enter the hatching cavity, and drive the fish eggs in the hatching cavity to roll under the impact of the water flow; due to the increase of the dissolved oxygen in the hatching water and the sufficient rolling force, the device is suitable for the hatching of the fish eggs of the subfamily genus , to improve the hatching rate of the fish eggs of the subfamily Kelvinidae.

Specifically, the diameter of the mesh holes in the mesh cloth is smaller than the diameter of the fish eggs, so as to prevent the fish eggs from flowing out of the mesh holes.

Specifically, the water inlet pipe is provided with a rotameter to control the water flow of the water inlet pipe. It should be noted that, in other embodiments, other flow control devices may be selected as required.

Specifically, the distance between the water outlet 10 and the top of the water tank 2 is 1/4 of the height of the side wall of the water tank 2, and the distance between the overflow outlet 16 and the top of the hatching tank is the same as the side wall of the hatching tank. 1/4 of the height; so that the water can fully contact with the air after flowing out of the water outlet 10 or the overflow outlet 16 to increase the amount of dissolved oxygen. It should be noted that in other embodiments, the heights of the water outlet and the overflow outlet can be set as required.

Specifically, one end of the deflector 7 is hinged to the bottom edge of the overflow outlet 16 , and the other end of the deflector 7 is provided with a first telescopic support rod 17 so as to adjust the first telescopic support rod The length of 17 adjusts the angle of the guide plate 7, thereby adjusting the water flow speed and water flow direction, so that when the water flow falls into the hatching tank, a reverse water flow is generated.

Specifically, one end of the water flow guide plate 4 is hinged with the bottom edge of the water flow outlet 10 , and the other end of the water flow guide plate 4 is provided with a second telescopic support rod 11 so as to adjust the second telescopic support rod 11 Adjust the angle of the water flow guide plate 4 to adjust the water flow speed and the water flow direction, so that when the water flow falls into the hatching tank, a reverse water flow is generated. It should be noted that the first telescopic support rod and the second telescopic support rod may be conventional telescopic rods such as sleeve telescopic rods as required.

Specifically, the device further includes a reservoir 8, and the reservoir 8 is located below the overflow outlet 16 of the first incubation tank 15, so that the water in the first incubation tank 15 can pass through the overflow Outlet 16 flows into said reservoir 8 . It should be noted that in other embodiments, the number of hatching tanks can be set as required to hatch fish eggs.

Example 2

The difference between this embodiment and Embodiment 1 is that as shown in FIG. 4 , a water pump is provided inside the water reservoir 8 , a water purification device 13 is provided in the water tank 2 , and the water outlet of the water pump 14 is connected to the The water inlet pipes 1 are connected to make the water in the device circulate continuously, save water and reduce the hatching cost. The water purification device can select existing water purification materials according to needs.

The present embodiment also provides a method for using the device for hatching fish eggs of the subfamily Scienidae, which comprises the following steps:

Get the subfamily fish eggs and sprinkle them into the hatching cavity 6; the water inlet pipe 1 is connected with the water source, water is injected into the water tank 2, and the water flow is adjusted so that the water flows into the second hatching tank 5 with water. The air is fully contacted, the amount of dissolved oxygen is increased, the angle of the water flow guide plate 4 is adjusted, and the direction of the water flow is adjusted so that the water flow falls into the second hatching tank 5, and a reversed water flow is generated, which enters the described hatching cavity 6 from the bottom surface. The hatching cavity 6 drives the roe to roll;

Continuous water injection, the water in the second hatching tank 5 flows out from the overflow outlet and flows into the first hatching tank 15, and the angle of the deflector 7 is adjusted to adjust the direction of water flow so that the water falls into the In the first hatching tank 15, the air is fully contacted to increase the amount of dissolved oxygen. When the water flow falls into the first hatching tank 15, a reversed water flow is generated, which enters the hatching cavity from the bottom surface of the hatching cavity 6 and drives the hatching cavity. the roe tumbles;

Continue to inject water until the water in the first hatching tank 15 begins to overflow into the reservoir 8; disconnect the water inlet pipe 1 from the water source, and then connect the water outlet of the water pump 14 to the The water inlet pipe 1 is connected, so that the water in the device for hatching fish eggs of the genus subfamily is continuously circulated, and the hatching is carried out for 3 days. It should be noted that in other embodiments, the incubation time may be set as required.

After testing, the device for hatching fish eggs provided by the present invention was used for hatching, and the dissolved oxygen content of the water in the hatching tank was 14.32 mg/l, and the hatching rate was 91%.

Finally it should be noted that: the above embodiment is only used to illustrate the technical scheme of the present invention and not to limit it; Although the present invention has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should understand: The specific embodiments of the invention are modified or some technical features are equivalently replaced; without departing from the spirit of the technical solutions of the present invention, all of them should be included in the scope of the technical solutions claimed in the present invention.

Claims (10)

1. a device that is used for hatching of fish eggs of the genus subfamily is characterized in that: it comprises a water tank and a plurality of hatching grooves, and each described hatching grooves are arranged in steps from low to high successively; the top of the water groove is provided with The water inlet pipe is provided with a water outlet on one side of the water tank, a water flow guide plate is arranged at the water outlet, and a bracket is respectively arranged inside each of the hatching tanks, and the upper part of the bracket is provided with a mesh surrounded by a mesh cloth. The incubator cavity is provided with a water inlet between the bracket and one side of the incubation tank; the water flow guide plate is located above the water inlet of the incubation tank with the highest position, so that the water in the water tank flows through the The water flow guide plate flows into the hatching tank with the highest position to form a reverse flow to drive the fish eggs in the hatching cavity to roll; the other side of each hatching tank is respectively provided with an overflow outlet, and the overflow outlet is A deflector is provided, and the water in the hatching tank with a higher position in the adjacent two hatching tanks passes through its overflow outlet, flows through the deflector and flows into the hatching tank with a lower position to form. The reversed water flow drives the eggs in the hatching cavity to roll. 2 . A device for hatching fish eggs according to claim 1 , wherein the diameter of the mesh holes in the mesh cloth is smaller than the diameter of the fish eggs. 3 . 3 . The device for hatching fish eggs of the subfamily Scienidae according to claim 1 , wherein the water inlet pipe is provided with a flow control device. 4 . 4. a kind of device that is used for hatching of fish eggs according to claim 1, is characterized in that: the distance between described water outlet and the top of the water tank is 1/4 of the height of the side wall of the water tank ~1/3; the distance between the overflow outlet and the top of the incubation tank is 1/4 to 1/3 of the height of the side wall of the incubation tank. 5. a kind of device that is used for hatching of fish eggs according to claim 1, is characterized in that: one end of described deflector is hinged with the bottom edge of described overflow outlet, and described deflector is hinged. The other end of the plate is provided with a first telescopic support rod, so that the angle of the deflector can be adjusted by adjusting the length of the first telescopic support rod. 6. a kind of device that is used for hatching of fish roe of subfamily fishes according to claim 1, is characterized in that: one end of described water flow guide plate is hinged with the bottom edge of described water flow outlet, and described water flow guide plate is hinged. A second telescopic support rod is arranged at the other end of the tee to adjust the length of the second telescopic support rod and adjust the angle of the water flow guide plate. 7. a kind of device for the hatching of fish eggs of the subfamily Scienidae according to claim 4 or 5, is characterized in that: it also comprises cistern, and described cistern is positioned at the lowest described hatching tank of position below the overflow outlet. 8. a kind of device for hatching fish eggs according to claim 7, is characterized in that: the inside of described reservoir is provided with water pump, and described water tank is provided with water purification device, so The water outlet of the water pump is connected with the water inlet pipe. 9. a kind of using method of the device that is used for the hatching of fish eggs of subfamily fishes according to claim 1, it comprises the following steps: Take fish eggs and sprinkle them into the hatching cavity; connect the water inlet pipe with the water source, inject water into the water tank, adjust the water flow, so that the water fully contacts the air before falling into the hatching tank with the highest position, Increase the amount of dissolved oxygen, adjust the angle of the water flow guide plate to change the direction of the water flow to make the water flow fall into the hatching tank, generate a reverse flow, enter the hatching cavity from the bottom surface of the hatching cavity, and drive the fish eggs roll; Continuous water injection, in the two adjacent hatching tanks, the water in the hatching tank with a higher position flows out from the overflow outlet and flows into the hatching tank with a lower position, and the deflector is adjusted. angle, make the water fully contact with the air before falling into the lower hatching tank, increase the amount of dissolved oxygen, and when the water flow falls into the lower hatching tank, a reversed water flow is generated, from the hatching The bottom surface of the cavity enters the hatching cavity, and drives the roe to roll; Continue to inject water until the water in the hatching tank at the lowest position begins to flow out from the overflow outlet, and incubate for 3 to 5 days to obtain fry. 10. a kind of using method for the device for hatching of fish eggs of the subfamily genus according to claim 9, is characterized in that, the step that obtains described fry comprises: continue to inject water into the described hatching tank with the lowest position The water flowing out of the overflow outlet starts to flow out from the overflow outlet, and the water flowing out from the overflow outlet is collected in a reservoir, and a water pump is arranged inside the reservoir to disconnect the water inlet pipe from the water source. Then, the water outlet of the water pump is connected with the water inlet pipe, so that the water in the device for hatching fish eggs of the genus genus is continuously circulated, and the fry are incubated for 3 to 5 days to obtain the fry.

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