A device for hatching white-spotted pike eggs

Abstract

The present application relates to the technical field of fish fry hatching device, and specifically discloses a white-spotted pike egg hatching device, which comprises a container provided with a containing cavity on the top side, a rotating rotating shaft is installed in the containing cavity, a driving assembly for driving the rotating shaft to rotate is installed on the container, a coaxial cylindrical shell is installed on the rotating shaft, a plurality of partitions are installed on the inner wall of the shell at equal angles around the rotating shaft, a water exchange hole is formed in one end surface of the shell, a filter screen is installed on the water exchange hole, and a plurality of silk threads are fixed on the inner wall of the shell at equal angles around the rotating shaft, wherein the silk threads are located between the rotating shaft and the partitions.The white-spotted pike egg hatching device can avoid mechanical damage of white-spotted pike eggs caused by water flow impact, and can make the white-spotted pike eggs fully contact with water, thereby improving the hatching rate of white-spotted pike eggs.

Description

Technical Field

[0001] This invention relates to the field of fish fry and fingerling breeding technology, and more particularly to the field of fish fry incubation device technology, specifically an incubation device for pike eggs. Background Technology

[0002] The white-spotted pike is mainly distributed in the Arctic Ocean, the Baltic Sea, and other waters in North America. In my country, it is only found in the Ertis River and Ulungur River systems in the Altay region. The white-spotted pike has delicious meat and is rich in nutrients.

[0003] Large-scale hatching of pike fry eggs often employs a hatching ring system. This system mainly consists of the ring, filter screens, inlet and outlet pipes, and a collection pond. The water flow comes from a water tower or reservoir. The water in the ring causes the fish eggs to tumble with the current. However, the hatching pond relies on a single-direction water flow circulation. The flow velocity is too high near the inlet, which can easily cause mechanical damage to the fish eggs. In areas far from the inlet, the fish eggs tend to accumulate, leading to localized hypoxia. Localized hypoxia can easily cause embryonic developmental arrest or malformation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a hatching device for pike eggs, which avoids mechanical damage to pike eggs caused by water flow impact and ensures full contact between pike eggs and water, thereby improving the hatching rate of pike eggs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hatching device for pike bream eggs, comprising a container with a accommodating cavity on the top side, a rotating shaft installed inside the accommodating cavity, a driving assembly for driving the rotating shaft to rotate installed on the container, a coaxial cylindrical shell installed on the rotating shaft, a plurality of partitions installed at equal angles around the rotating shaft on the inner wall of the shell, a water exchange hole opened on one end face of the shell, a filter screen installed on the water exchange hole, and a plurality of threads fixed at equal angles around the rotating shaft on the inner wall of the shell, the threads being located between the rotating shaft and the partitions.

[0006] The container's holding cavity and the shell's inner cavity are both filled with water. Air is present in the shell's inner cavity, and the water level inside the shell is higher than the rotating shaft and the water exchange hole. The decontaminated pike eggs are placed into the shell, and the drive assembly rotates the shell via the rotating shaft.

[0007] As a preferred embodiment of the present invention, it further includes a first conduit, a second conduit, a third conduit, and a fourth conduit. An air bladder is provided inside the housing, and a hollow rotary joint is installed on the rotating shaft. One end of the first conduit and the inner cavity of the air bladder are connected to the third conduit through the hollow rotary joint. One end of the second conduit and the inner cavity of the air bladder are connected to the fourth conduit through the hollow rotary joint. A valve is installed on the second conduit.

[0008] As a preferred embodiment of the present invention, the airbag is an elastic airbag.

[0009] As a preferred embodiment of the present invention, an air stone is installed at the end of the second conduit away from the hollow rotary joint.

[0010] As a preferred embodiment of the present invention, it further includes a gear disk, a rotating rod is fixed on the partition plate, an opening is provided on the housing corresponding to the position of the rotating rod, one end of the rotating rod passes through the opening and extends to the outside of the housing, a gear is fixed on the rotating rod, and the gear meshes with the gear disk.

[0011] As a preferred embodiment of the present invention, the outer periphery of the housing is provided with a mounting hole, and a detachable cover plate is installed on the mounting hole.

[0012] As a preferred embodiment of the present invention, the partition and the inner wall of the shell are rotatably connected, and a connecting rope is connected between any two adjacent partitions.

[0013] As a preferred embodiment of the present invention, the spacing between two adjacent threads is 1.0-5.0 cm.

[0014] As a preferred embodiment of the present invention, the number of partitions is not less than five.

[0015] As a preferred embodiment of the present invention, the shell is made of a transparent material.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The hatching device for pike fry eggs according to the present invention has the following advantages: First, the shell drives the partition to rotate continuously, and the rotating partition causes the pike fry eggs to tumble continuously, avoiding mechanical damage caused by water flow impact and ensuring full contact between the pike fry eggs and water, preventing the pike fry eggs from accumulating and causing local hypoxia, thus improving the hatching rate. Second, when some pike fry eggs stick together, the stuck eggs adhere to the silk thread. As the air bubble passes through the silk thread, the stuck pike fry eggs enter the air bubble, and the stuck pike fry eggs inside the air bubble are separated by the silk thread, reducing the impact of egg adhesion on the hatching rate. Third, the continuously inflated and deflated air bladder generates water flow at the silk thread, which disperses the downward-moving pike fry eggs. The water at the filter screen flows back and forth, realizing the exchange of water inside and outside the shell, preventing the filter screen from being blocked by pike fry eggs, and preventing pike fry from sticking to the filter screen for a long time, thus improving the survival rate of pike fry.

[0018] 2. The hatching device for pike fry of the present invention, after the pike fry hatch into fry, separates the partition from the inner periphery of the shell cavity, making it easy for workers to extract or drain the water inside the shell, and making it convenient to transfer the pike fry inside the shell.

[0019] 3. In the example of the hatching device for pike bream eggs of the present invention, the air bladder is made of elastic rubber or elastic silicone material to avoid damage to the pike bream eggs caused by wrinkles when the air bladder shrinks.

[0020] 4. In the hatching device for pike eggs of the present invention, air from the top of the inner cavity of the shell continuously enters the water and forms bubbles in the water. During the movement of the bubbles, the bubbles cause the water in the inner cavity of the shell to flow, so that the dissolved oxygen concentration of the water in the inner cavity of the shell is close to that of each other. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention from one perspective;

[0022] Figure 2 This is a schematic diagram of the structure from another perspective of the present invention;

[0023] Figure 3 This is a schematic diagram of the shell structure of the present invention;

[0024] Figure 4 This is a schematic cross-sectional view of the shell structure according to an embodiment of the present invention;

[0025] Figure 5 for Figure 4 Another perspective structural diagram;

[0026] Figure 6 This is a cross-sectional view of the housing structure according to another embodiment of the present invention.

[0027] In the diagram: 1 Container, 2 Shell, 3 Hollow Rotary Joint, 4 Drive Assembly, 5 Rotary Shaft, 6 First Conduit, 7 Valve, 8 Second Conduit, 9 Filter Screen, 10 Airbag, 11 Third Conduit, 12 Fourth Conduit, 13 Partition, 14 Thread, 15 Air Stone, 16 Cover Plate, 17 Rotating Rod, 18 Gear Disc, 19 Connecting Rope. Detailed Implementation

[0028] 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.

[0029] Example 1:

[0030] Please see Figure 1-4 This embodiment discloses an incubation device for pike bream eggs, including a container 1 with a accommodating cavity on the top side, a rotating shaft 5 installed in the accommodating cavity via bearings, a driving assembly 4 for driving the rotating shaft 5 to rotate installed on the container 1, a coaxial cylindrical shell 2 fixedly installed on the rotating shaft 5, a plurality of partitions 13 are installed on the inner wall of the shell 2 at equal angles around the rotating shaft 5, and one edge of the partition 13 contacts the inner circumference of the inner cavity of the shell 2, a water exchange hole is opened on one end face of the shell 2 near the rotating shaft 5, a filter screen 9 is installed on the water exchange hole, and a plurality of threads 14 are fixed on the inner wall of the shell 2 at equal angles around the rotating shaft 5, the threads 14 being located between the rotating shaft 5 and the partitions 13.

[0031] The drive component 4 is an electric motor or a hydraulic motor. The drive component 4 used in this invention is a commonly used power device in the prior art. Its working method and structure are well known technologies and will not be described in detail here.

[0032] The working process and principle of this embodiment are as follows:

[0033] Staff used decontamination agents to decontaminate the eggs of the pike, including but not limited to yellow mud, talcum powder, raw soybean milk, starch, fuller's clay, proteolytic enzyme, tannic acid, urea, and a mixed solution of sodium chloride.

[0034] The staff injected water into both the accommodating cavity of container 1 and the inner cavity of shell 2. Air was present in the inner cavity of shell 2, and the water level in shell 2 was higher than the rotating shaft 5 and the water exchange hole. Then, the staff put the decontaminated pike eggs into shell 2, and the staff made the drive component 4 drive shell 2 to rotate through the rotating shaft 5.

[0035] The shell 2 drives the partition 13 to rotate continuously, causing the pike roe at the bottom of the inner cavity of the shell 2 to rotate with the partition 13. After one of the partitions 13 rotates from the bottom of the inner cavity of the shell 2 to a downward tilt angle, the pike roe on the partition 13 passes through the thread 14 and falls to the bottom of the inner cavity of the shell 2. The air at the top of the inner cavity of the shell 2 rotates with the partition 13. After one of the partitions 13 rotates from the top of the inner cavity of the shell 2 to a downward tilt angle, the partition 13 is completely submerged in water. The air under the partition 13 leaves the partition 13 and forms bubbles. The bubbles pass through the thread 14 and move to the top of the inner cavity of the shell 2.

[0036] The shell 2 drives the partition 13 to rotate continuously. The rotating partition 13 causes the pike eggs to turn over continuously, which avoids mechanical damage to the pike eggs caused by the impact of water flow, and ensures that the pike eggs are in full contact with water, thus preventing the pike eggs from accumulating and causing local hypoxia, and improving the hatching rate of the pike eggs.

[0037] When some of the pike eggs stick together, the sticky pike eggs adhere to the silk thread 14. As the air bubble passes through the silk thread 14, the sticky pike eggs enter the air bubble. The sticky pike eggs inside the air bubble are separated by the silk thread 14, reducing the impact of pike egg adhesion on the hatching rate of pike eggs.

[0038] Furthermore, air continuously enters the water from the top of the inner cavity of the shell 2 and forms bubbles in the water. As the bubbles move, they cause the water in the inner cavity of the shell 2 to flow, making the dissolved oxygen concentration of the water in the inner cavity of the shell 2 similar. The water inside and outside the shell 2 is exchanged through the filter screen 9.

[0039] Furthermore, the spacing between two adjacent wires 14 is 1.0cm-5.0cm, the number of partitions 13 is not less than five, the angle between the partition 13 and the tangent on the outer periphery of the shell 2 is 50°-90°, and the cross-section of the wire 14 is 0.5mm²-5.0mm².

[0040] Furthermore, shell 2 is made of transparent material, making it easier for staff to observe the hatching of the pike eggs.

[0041] Furthermore, a water heating device, a sterilization device, and an oxygenation device are installed inside the shell 2, and the container 1 is made of brick, concrete, plastic, or metal.

[0042] Furthermore, the housing 2 includes a circular tube, with detachable end plates installed at both ends of the circular tube.

[0043] Example 2:

[0044] like Figure 3 and Figure 4 As shown, this embodiment discloses an incubation device for pike eggs, the structure of which is roughly the same as that of Embodiment 1. The difference is that this embodiment also includes a first conduit 6, a second conduit 8, a third conduit 11 and a fourth conduit 12. An air bladder 10 is provided inside the shell 2, and a hollow rotary joint 3 is installed on the rotating shaft 5. One end of the first conduit 6 and the inner cavity of the air bladder 10 are connected to the third conduit 11 through the hollow rotary joint 3. One end of the second conduit 8 and the inner cavity of the air bladder 10 are connected to the fourth conduit 12 through the hollow rotary joint 3. A valve 7 is installed on the second conduit 8.

[0045] The working process and principle of this embodiment are as follows:

[0046] The operator connects the end of the first conduit 6 away from the hollow rotary joint 3 to an external air pump. The external air pump operates, continuously filling the airbag 10 with air. The operator closes the valve 7, increasing the volume of the airbag 10, causing the water in the housing 2 to flow through the filter screen 9 into the receiving cavity. Then, the operator opens the valve 7, and the air in the airbag 10 is discharged through the fourth conduit 12, the hollow rotary joint 3, and the second conduit 8. The volume of the airbag 10 decreases, causing the water in the receiving cavity to flow through the filter screen 9 into the housing 2. The operator repeats the aforementioned operation.

[0047] The water at filter screen 9 flows back and forth in opposite directions to prevent filter screen 9 from being clogged by pike eggs and to prevent pike fry from sticking to filter screen 9 for a long time, thus improving the survival rate of pike fry.

[0048] Furthermore, valve 7 is a timed opening and closing solenoid valve commonly used in the prior art.

[0049] Example 3:

[0050] like Figure 4 As shown, this embodiment discloses an incubation device for pike bream eggs. Its structure is roughly the same as that of embodiment two. The difference is that the air bladder 10 in this embodiment is made of elastic rubber or elastic silicone material to avoid damage to the pike bream eggs caused by wrinkles when the air bladder 10 shrinks in volume. The surface of the air bladder 10 expands and contracts continuously to prevent the pike bream eggs from adhering to the air bladder 10.

[0051] The constantly inflating and deflating air bladder 10 generates water flow at the thread 14, causing the downward-moving pike eggs to disperse.

[0052] Furthermore, the airbag 10 is fixed on the rotating shaft 5.

[0053] Example 4:

[0054] like Figure 4 As shown, this embodiment discloses an incubation device for pike eggs, the structure of which is roughly the same as that of embodiment three. The difference is that in this embodiment, an air stone 15 is installed at the end of the second conduit 8 away from the hollow rotary joint 3.

[0055] The working process and principle of this embodiment are as follows:

[0056] As the volume of the airbag 10 decreases, the water in the containment cavity flows into the shell 2 after passing through the filter screen 9. The air in the airbag 10 enters the air stone 15 through the fourth conduit 12, the hollow rotary joint 3, and the second conduit 8. The air entering the air stone 15 forms bubbles in the containment cavity, thereby oxygenating the water in the containment cavity.

[0057] Example 5:

[0058] like Figure 4 and Figure 5 As shown, this embodiment discloses an incubation device for pike eggs, the structure of which is roughly the same as that of embodiment one. The difference is that this embodiment also includes a toothed disc 18, a rotating rod 17 is fixed on the partition 13, and an opening is provided on the housing 2 corresponding to the position of the rotating rod 17. One end of the rotating rod 17 passes through the opening and extends to the outside of the housing 2. The rotating rod 17 and the rotating shaft 5 are arranged in parallel. A gear is fixed on the rotating rod 17, and the gear meshes with the toothed disc 18.

[0059] The working process and principle of this embodiment are as follows:

[0060] After the pike fry hatch, the staff rotates the toothed disc 18. The toothed disc 18 drives the partition 13 to rotate through the gears and rotating rod 17, so that the partition 13 is no longer in contact with the inner circumference of the shell 2. This makes it easier for the staff to extract or drain the water from the shell 2 and transfer the pike fry inside the shell 2.

[0061] Example 6:

[0062] like Figures 1-6 As shown, this embodiment discloses an incubation device for pike eggs, which is roughly the same as the structure of Embodiment 1. The difference is that the outer periphery of the shell 2 in this embodiment is provided with an installation hole, and a cover plate 16 is installed on the installation hole by bolts or clips.

[0063] The staff opened the cover plate 16 on the mounting hole, injected water into the shell 2 through the mounting hole, and put the decontaminated pike eggs into the shell 2 through the mounting hole. Then the staff installed the cover plate 16 on the mounting hole.

[0064] like Figure 6 As shown, the partition 13 and the inner wall of the shell 2 are connected by hinges or bearings. The rotation axis of the partition 13 is parallel to the rotating shaft 5. A connecting rope 19 is connected between any two adjacent partitions 13. After the pike fry hatch, the staff opens the cover plate 16 on the installation hole and pushes one of the partitions 13 to rotate. The connecting rope 19 makes all the partitions 13 rotate synchronously, and the inner circumference of the partition 13 and the inner wall of the shell 2 are separated. The staff can then draw out or drain the water in the shell 2, making it easy to transfer the pike fry in the shell 2.

[0065] 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 incubation device for pike fry eggs, characterized in that: The container includes a first conduit (6), a second conduit (8), a third conduit (11), a fourth conduit (12), and a container (1) with a accommodating cavity on the top side. A rotating shaft (5) is installed in the accommodating cavity. A drive assembly (4) for driving the rotating shaft (5) is installed on the container (1). A coaxial cylindrical shell (2) is installed on the rotating shaft (5). Several partitions (13) are installed on the inner wall of the shell (2) at equal angles around the rotating shaft (5). A water exchange hole is opened on one end face of the shell (2). A filter screen (9) is installed on the water exchange hole. Several threads (14) are fixed on the inner wall of the shell (2) at equal angles around the rotating shaft (5). The threads (14) are located between the rotating shaft (5) and the partitions (13). The housing (2) is provided with an airbag (10), and a hollow rotary joint (3) is installed on the rotating shaft (5). One end of the first conduit (6) and the inner cavity of the airbag (10) are connected through the hollow rotary joint (3) and the third conduit (11). One end of the second conduit (8) and the inner cavity of the airbag (10) are connected through the hollow rotary joint (3) and the fourth conduit (12). A valve (7) is installed on the second conduit (8). Water is injected into the accommodating cavity of the container (1) and the inner cavity of the shell (2). Air is present in the inner cavity of the shell (2), and the water level in the shell (2) is higher than the rotating shaft (5) and the water exchange hole. The decontaminated pike roe is placed into the shell (2), and the driving component (4) drives the shell (2) to rotate through the rotating shaft (5).

2. The hatching device for pike eggs according to claim 1, characterized in that: The airbag (10) is an elastic airbag.

3. The hatching device for pike eggs according to claim 2, characterized in that: The second conduit (8) has an air stone (15) installed at the end away from the hollow rotary joint (3).

4. The hatching device for pike eggs according to claim 1, characterized in that: It also includes a gear disk (18), a rotating rod (17) is fixed on the partition (13), the housing (2) has an opening at the position corresponding to the rotating rod (17), one end of the rotating rod (17) passes through the opening and extends to the outside of the housing (2), a gear is fixed on the rotating rod (17), and the gear meshes with the gear disk (18).

5. The hatching device for pike eggs according to claim 1, characterized in that: The outer periphery of the housing (2) is provided with a mounting hole, and a detachable cover plate (16) is installed on the mounting hole.

6. The hatching device for pike eggs according to claim 5, characterized in that: The partition (13) is rotatably connected to the inner wall of the shell (2), and a connecting rope (19) is connected between any two adjacent partitions (13).

7. The hatching device for pike eggs according to claim 1, characterized in that: The spacing between two adjacent threads (14) is 1.0-5.0 cm.

8. The hatching device for pike eggs according to claim 1, characterized in that: The number of the partitions (13) is no less than five.

9. The hatching device for pike eggs according to claim 1, characterized in that: The shell (2) is made of transparent material.

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