An incubator for improving the hatching rate of pompano eggs

Abstract

The present application relates to the technical field of fish egg hatching, and specifically discloses a hatcher for improving the hatching rate of perch eggs, which comprises a cylindrical shell, a drainage port is formed in the middle of the top side of the shell, a plurality of water outlets are mounted on the edge of the bottom side of the inner cavity of the shell, a conical shell with a pointed top is fixed in the middle of the bottom side of the inner cavity of the shell, a circular pipe body is mounted above the conical shell and arranged vertically, a plurality of partitions are fixed on the inner wall of the pipe body, the pointed top of the conical shell extends into the pipe body, and the gap between the conical shell and the pipe body is 1.0-10.0 cm. In the hatcher, the perch eggs move up and down in the water without contacting the filter screen, so that the perch eggs are prevented from being mechanically extruded, and the hatching rate of the perch eggs is improved.

Description

Technical Field

[0001] This invention relates to the field of fish egg hatching technology, specifically to an incubator for improving the hatching rate of pikeperch eggs. Background Technology

[0002] The pikeperch is an important economic fish species in the family Perciformes. It originated in Central Europe and is distributed in the rivers and lakes of the Aral Sea, Black Sea, Caspian Sea and Baltic Sea systems. It has advantages such as fast growth, low feed consumption, delicious meat, no intramuscular bones, and higher protein content than most fish.

[0003] Hatching rings are a widely used fish hatching facility. A hatching ring consists of a tank, a filter screen, a spray system, and a drain pipe. Hatching rings support high-density fish egg hatching and are suitable for large-scale production. However, during the hatching of pikeperch eggs using a hatching ring, the pikeperch eggs are prone to getting stuck in the filter screen of the hatching ring, causing mechanical damage to the eggs and affecting the hatching rate. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide an incubator that improves the hatching rate of pikeperch eggs. The pikeperch eggs move up and down in the water and do not come into contact with the filter screen, thus avoiding mechanical compression of the pikeperch eggs and improving the hatching rate.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an incubator for improving the hatching rate of pikeperch eggs, comprising a cylindrical shell, a drain outlet in the middle of the top side of the shell, several water outlets installed along the edge of the bottom side of the inner cavity of the shell, a conical shell with its tip pointing upwards fixed in the middle of the bottom side of the inner cavity of the shell, a vertically arranged circular tube installed above the conical shell, several partitions fixed on the inner wall of the tube, the tip of the conical shell extending into the tube, and the gap between the conical shell and the tube being 1.0-10.0 cm.

[0006] The process involves injecting water into the shell, removing the pochard eggs from the outside, and placing them inside the shell. An external water pump supplies water to the outlet, and the water sprayed from the outlet causes the water between the inner wall of the shell and the outer side of the tube to rotate.

[0007] As a preferred embodiment of the present invention, it further includes an oxygenation device and an annular permeable cloth located inside the shell. The top and bottom ends of the annular permeable cloth are fixedly connected to the inner wall of the shell, respectively. The tube is located inside the annular permeable cloth, and a water-containing cavity is formed between the outer side of the annular permeable cloth and the inner wall of the shell.

[0008] The oxygenation device includes a housing, with a plurality of liquid film forming parts fixed in the middle of the inner cavity of the housing. A first mounting hole communicating with the inside and outside of the housing is opened on the top side of the housing. A nozzle is installed at the bottom end of the first mounting hole, and a first valve is installed at the top end of the first mounting hole. A second mounting hole communicating with the inside and outside of the housing is opened on the bottom side of the housing. The bottom end of the second mounting hole is connected to one end of a connecting pipe, and the other end of the connecting pipe is connected to the bottom of the water-containing cavity or the bottom of the inner cavity of the housing.

[0009] The air pressure inside the outer casing is 150.0 kPa-300.0 kPa, and the external water pump supplies water to the first valve.

[0010] As a preferred embodiment of the present invention, the liquid film forming component is a ring, a sphere, or a mesh plate.

[0011] As a preferred embodiment of the present invention, a pressure control valve is installed on the connecting pipe.

[0012] As a preferred embodiment of the present invention, a fourth mounting hole is provided on the outer side of the housing, which communicates with the upper part of the water-containing cavity, and an automatic air vent valve is installed on the fourth mounting hole.

[0013] As a preferred embodiment of the present invention, a third mounting hole is provided on the top side of the outer casing, and a second valve is installed on the third mounting hole.

[0014] As a preferred embodiment of the present invention, it further includes an annular permeable cloth located inside the shell, the top and bottom ends of the annular permeable cloth being fixedly connected to the inner wall of the shell, the tube being located inside the annular permeable cloth, and a closed water-containing cavity being formed between the annular permeable cloth and the shell.

[0015] An external water pump supplies water to the water-containing chamber.

[0016] As a preferred embodiment of the present invention, a fourth mounting hole is provided on the outer side of the housing, which communicates with the upper part of the water-containing cavity, and an automatic air vent valve is installed on the fourth mounting hole.

[0017] As a preferred embodiment of the present invention, the shell is made of a transparent material.

[0018] As a preferred embodiment of the present invention, it further includes a water guide pipe, wherein the drain outlet extends upward with an extension pipe, and an opening is provided on the outer side of the extension pipe, the opening being connected to one end of the water guide pipe.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The incubator for improving the hatching rate of pikeperch eggs according to the present invention, on the one hand, the water between the inner wall of the shell and the outer side of the tube causes the pikeperch eggs to spiral upwards. After the height of the pikeperch eggs exceeds the top of the tube, the pikeperch eggs move spirally towards the drain outlet with the water. The centrifugal force on the pikeperch eggs prevents them from passing through the drain outlet, and the pikeperch eggs fall downwards into the tube. Inside the tube, the pikeperch eggs move downwards and pass through the gap between the conical shell and the tube. This incubator causes the pikeperch eggs to circulate inside and outside the tube, avoiding mechanical compression of the pikeperch eggs and improving the hatching rate; on the other hand, the pikeperch... During the hatching process, the oxygenation device and the annular permeable cloth work together to generate water flow through the annular permeable cloth, preventing the pikeperch eggs from rubbing or colliding with the inner wall of the shell during their spiral movement, thus avoiding mechanical damage to the pikeperch eggs and increasing the oxygen content of the water in the tube. On the other hand, after the pikeperch eggs hatch into fry, the oxygenation device causes air bubbles to precipitate in the water inside the shell. The air bubbles adhere to the egg membrane, and the egg membrane with air bubbles has increased buoyancy. The egg membrane with air bubbles adheres to the water spiral and moves towards the drain outlet and is discharged through the drain outlet, making it easy for the pikeperch fry to separate from the egg membrane and preventing the egg membrane from becoming moldy and affecting the growth of the pikeperch fry.

[0021] 2. The incubator for improving the hatching rate of pikeperch eggs according to the present invention uses water between the inner wall of the shell and the outer side of the tube to drive the pikeperch eggs to move upward in a spiral, thereby avoiding the accumulation of pikeperch eggs and reducing the mortality of pikeperch eggs due to lack of oxygen.

[0022] 3. The incubator for improving the hatching rate of pikeperch eggs according to the present invention has an extension pipe extending upward from the drain outlet. An opening is provided on the outside of the extension pipe, and the opening is connected to one end of the water guide pipe to facilitate the flow of water from the drain outlet into the external sedimentation tank. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention from one perspective;

[0024] Figure 2 for Figure 1 A partial sectional view of the structure;

[0025] Figure 3 This is a schematic diagram of the working state structure of the present invention;

[0026] Figure 4 This is a schematic diagram of another working state structure of the present invention;

[0027] Figure 5 This is a partial cross-sectional view of the oxygenation device of the present invention.

[0028] In the diagram: 1. Shell, 2. Drain outlet, 3. Aeration device, 301. Nozzle, 302. First valve, 303. Second valve, 304. Liquid film forming part, 305. Shell, 4. Annular permeable cloth, 5. Pipe, 6. Baffle, 7. Conical shell, 8. Water outlet, 9. Connecting pipe, 10. Automatic air vent valve. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] Example 1:

[0031] Please see Figures 1-4 This embodiment discloses an incubator for improving the hatching rate of pikeperch eggs, including a cylindrical shell 1, a drain outlet 2 in the middle of the top side of the shell 1, several water outlets 8 installed at equal angles along the bottom edge of the inner cavity of the shell 1, a conical shell 7 with its tip pointing upwards fixed in the middle of the bottom side of the inner cavity of the shell 1, a vertically arranged circular tube 5 installed above the conical shell 7, several vertically arranged partitions 6 fixed on the inner wall of the tube 5, the tip of the conical shell 7 extending into the tube 5, and the gap between the conical shell 7 and the tube 5 being 1.0-10.0 cm.

[0032] Furthermore, existing technologies use common talcum powder, mud, or protease to de-adhere pikeperch eggs, which are sinking eggs with a density greater than that of water.

[0033] The working process and principle of this embodiment are as follows:

[0034] Workers inject water into the shell 1, and after removing the roe from the perch, they place it into the shell 1. They then use an external water pump to deliver water to the outlet 8. The water sprayed from the outlet 8 causes the water between the inner wall of the shell 1 and the outer side of the pipe 5 to rotate.

[0035] The water between the inner wall of the shell 1 and the outer side of the tube 5 causes the pikeperch eggs to spiral upwards. After the height of the pikeperch eggs exceeds the top of the tube 5, the pikeperch eggs move spirally towards the drain outlet 2 with the water. The centrifugal force on the pikeperch eggs prevents them from passing through the drain outlet 2, and the pikeperch eggs fall downwards into the tube 5. Inside the tube 5, the pikeperch eggs move downwards and pass through the gap between the conical shell 7 and the tube 5. This incubator allows the pikeperch eggs to circulate inside and outside the tube 5, avoiding mechanical compression of the pikeperch eggs and improving the hatching rate.

[0036] Furthermore, the water sprayed from the nozzle 8 causes the water between the inner wall of the housing 1 and the outer side of the tube 5 to rotate, and the water outside the gap between the conical housing 7 and the tube 5 flows, which reduces the hydraulic pressure of the water outside the gap between the conical housing 7 and the tube 5. The water inside the tube 5 flows downward and passes through the gap between the conical housing 7 and the tube 5.

[0037] The baffle 6 inside the tube 5 prevents the water inside the tube 5 from rotating, and the conical shell 7 causes the barracuda eggs inside the tube 5 to move into the gap between the conical shell 7 and the tube 5.

[0038] Furthermore, the shell 1 is made of transparent material, making it easy for staff to observe the hatching of the pikeperch eggs.

[0039] Example 2:

[0040] like Figures 1-5 As shown, this embodiment discloses an incubator for improving the hatching rate of pikeperch eggs. Its structure is roughly the same as that of Embodiment 1. The difference is that this embodiment also includes an oxygenation device 3 and an annular permeable cloth 4 located inside the shell 1. The top and bottom ends of the annular permeable cloth 4 are fixedly connected to the inner wall of the shell 1, respectively. The tube 5 is located inside the annular permeable cloth 4, and a water-containing cavity is formed between the outer side of the annular permeable cloth 4 and the inner wall of the shell 1.

[0041] The oxygenation device 3 includes a housing 305. Several liquid film forming parts 304 are fixed in the middle of the inner cavity of the housing 305. A first mounting hole communicating with the inside and outside is opened on the top side of the housing 305. A nozzle 301 is installed at the bottom end of the first mounting hole and a first valve 302 is installed at the top end of the first mounting hole. A second mounting hole communicating with the inside and outside is opened on the bottom side of the housing 305. The bottom end of the second mounting hole is connected to one end of the connecting pipe 9, and the other end of the connecting pipe 9 is connected to the bottom of the water-containing cavity or the bottom of the inner cavity of the housing 1.

[0042] The air pressure inside the outer casing 305 is 150.0 kPa-300.0 kPa, and the external water pump supplies water to the first valve 302.

[0043] The working process and principle of this embodiment are as follows:

[0044] During the hatching process of pikeperch eggs: the operator connects one end of the connecting pipe 9 to the bottom of the water-containing cavity. The operator then uses an air pump or air compressor to fill the outer shell 305 with air, making the air pressure inside the outer shell 305 150.0kPa-300.0kPa. The operator then uses an external water pump to supply water to the first valve 302. The water is sprayed onto the liquid film forming component 304 through the first valve 302 and nozzle 301. The liquid film forming component 304 forms a liquid film, increasing the dissolved air in the water. Then, the water inside the outer shell 305 enters the water-containing cavity through the connecting pipe 9. After the water enters the water-containing cavity, the hydraulic pressure decreases, and the air in the water is released to form bubbles with a diameter of 30μm-100μm. The water in the water-containing cavity passes through the annular permeable cloth 4, forming a water flow through the annular permeable cloth 4. The water flow through the annular permeable cloth 4 prevents the pikeperch eggs from rubbing or colliding with the inner wall of the shell 1 during the spiral movement, thus avoiding mechanical damage to the pikeperch eggs and increasing the oxygen content of the water in the tube 5.

[0045] After the pikeperch eggs hatch into fry: the staff connects one end of the connecting pipe 9 to the bottom of the inner cavity of the shell 1. After the water in the outer shell 305 enters the water-containing cavity, the hydraulic pressure decreases, and the air in the water is released to form bubbles with a diameter of 30μm-100μm. The bubbles adhere to the egg membrane, and the buoyancy of the egg membrane with the bubbles attached increases. The egg membrane with the bubbles attached moves with the water spiral towards the drain outlet 2 and is discharged through the drain outlet 2, which makes it easy to separate the pikeperch fry from the egg membrane and avoids the egg membrane from becoming moldy and affecting the growth of the pikeperch fry.

[0046] After air bubbles adhere to their bodies, the pikeperch fry swim to remove the air bubbles.

[0047] Furthermore, the liquid film forming part 304 is a ring, a sphere, or a mesh plate.

[0048] Furthermore, a fourth mounting hole is provided on the outer side of the housing 1, which connects to the upper part of the water-containing cavity. An automatic air vent valve 10 is installed on the fourth mounting hole, which facilitates the discharge of air from the water-containing cavity.

[0049] Furthermore, a pressure control valve is installed on the connecting pipe 9. When the pressure difference between the two ports of the pressure control valve is greater than the set value, the pressure control valve is open. When the pressure between the two ports of the pressure control valve is less than the set value, the pressure control valve is closed. The pressure control valve prevents air inside the housing 305 from entering the housing 1.

[0050] Furthermore, a third mounting hole is provided on the top side of the outer casing 305, and a second valve 303 is installed on the third mounting hole. The second valve 303 facilitates the operator to fill the outer casing 305 with air.

[0051] Example 3:

[0052] like Figure 2As shown, this embodiment discloses an incubator for improving the hatching rate of pikeperch eggs. Its structure is roughly the same as that of Embodiment 1. The difference is that this embodiment also includes an annular permeable cloth 4 located inside the shell 1. The top and bottom ends of the annular permeable cloth 4 are fixedly connected to the inner wall of the shell 1, respectively. The tube 5 is located inside the annular permeable cloth 4, and a closed water-containing cavity is formed between the annular permeable cloth 4 and the shell 1.

[0053] An external water pump supplies water to the water-containing chamber.

[0054] The working process and principle of this embodiment are as follows:

[0055] During the hatching process of pikeperch eggs: the staff uses an external water pump to deliver water to the water-containing chamber. The water in the water-containing chamber passes through the annular permeable cloth 4, forming a water flow through the annular permeable cloth 4. The water flow through the annular permeable cloth 4 prevents the pikeperch eggs from rubbing or colliding with the inner wall of the shell 1 during the spiral movement, thus avoiding mechanical damage to the pikeperch eggs.

[0056] Furthermore, a fourth mounting hole is provided on the outer side of the housing 1, which connects to the upper part of the water-containing cavity. An automatic air vent valve 10 is installed on the fourth mounting hole, which facilitates the discharge of air from the water-containing cavity.

[0057] Example 4:

[0058] like Figure 1 and Figure 2 As shown, this embodiment discloses an incubator for improving the hatching rate of pikeperch eggs. Its structure is roughly the same as that of Embodiment 1. The difference is that this embodiment also includes a water guide pipe. The drain outlet 2 extends upward with an extension pipe. An opening is provided on the outside of the extension pipe. The opening is connected to one end of the water guide pipe, so that the water flowing out of the drain outlet 2 can flow into the external sedimentation tank.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. An incubator for improving the hatching rate of pikeperch eggs, characterized in that: The device includes an oxygenation device (3), a cylindrical shell (1), and an annular permeable cloth (4) located inside the shell (1). A drain outlet (2) is provided in the middle of the top side of the shell (1). Several water outlets (8) are installed on the edge of the bottom side of the inner cavity of the shell (1). A conical shell (7) with its tip pointing upward is fixed in the middle of the bottom side of the inner cavity of the shell (1). A vertically arranged circular tube (5) is installed above the conical shell (7). Several partitions (6) are fixed on the inner wall of the tube (5). The tip of the conical shell (7) extends into the tube (5), and the gap between the conical shell (7) and the tube (5) is 1.0-10.0 cm. The top and bottom ends of the annular permeable cloth (4) are fixedly connected to the inner wall of the shell (1), the tube (5) is located inside the annular permeable cloth (4), and a water-containing cavity is formed between the outer side of the annular permeable cloth (4) and the inner wall of the shell (1). The oxygenation device (3) includes a shell (305), and a plurality of liquid film forming parts (304) are fixed in the middle of the inner cavity of the shell (305). A first mounting hole communicating with the inside and outside is opened on the top side of the shell (305). A nozzle (301) is installed at the bottom end of the first mounting hole, and a first valve (302) is installed at the top end of the first mounting hole. A second mounting hole communicating with the inside and outside is opened on the bottom side of the shell (305). The bottom end of the second mounting hole is connected to one end of the connecting pipe (9), and the other end of the connecting pipe (9) is connected to the bottom of the water-containing cavity or the bottom of the inner cavity of the shell (1). Water is injected into the shell (1), and the barracuda eggs outside are removed and placed into the shell (1). The external water pump delivers water to the water outlet (8), and the water sprayed from the water outlet (8) causes the water between the inner wall of the shell (1) and the outer side of the tube (5) to rotate. The air pressure inside the outer casing (305) is 150.0 kPa-300.0 kPa, and the external water pump supplies water to the first valve (302).

2. The incubator for improving the hatching rate of pikeperch eggs according to claim 1, characterized in that: The liquid film forming part (304) is a ring, a sphere, or a mesh plate.

3. The incubator for improving the hatching rate of pikeperch eggs according to claim 1, characterized in that: A pressure control valve is installed on the connecting pipe (9).

4. The incubator for improving the hatching rate of pikeperch eggs according to claim 1, characterized in that: The outer side of the housing (1) is provided with a fourth mounting hole that connects to the upper part of the water-containing cavity, and an automatic air vent valve (10) is installed on the fourth mounting hole.

5. The incubator for improving the hatching rate of pikeperch eggs according to claim 1, characterized in that: A third mounting hole is provided on the top side of the outer casing (305), and a second valve (303) is installed on the third mounting hole.

6. The incubator for improving the hatching rate of pikeperch eggs according to claim 1, characterized in that: It also includes an annular permeable cloth (4) located inside the shell (1), the top and bottom ends of the annular permeable cloth (4) being fixedly connected to the inner wall of the shell (1) respectively, the tube (5) being located inside the annular permeable cloth (4), and a closed water-containing cavity being formed between the annular permeable cloth (4) and the shell (1). An external water pump supplies water to the water-containing chamber.

7. The incubator for improving the hatching rate of pikeperch eggs according to claim 6, characterized in that: The outer side of the housing (1) is provided with a fourth mounting hole that connects to the upper part of the water-containing cavity, and an automatic air vent valve (10) is installed on the second mounting hole.

8. The incubator for improving the hatching rate of pikeperch eggs according to claim 1, characterized in that: The shell (1) is made of transparent material.

9. The incubator for improving the hatching rate of pikeperch eggs according to claim 1, characterized in that: It also includes a water guide pipe, and the drain outlet (2) extends upward with an extension pipe. An opening is provided on the outside of the extension pipe, and the opening is connected to one end of the water guide pipe.

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