Fish egg incubation promoting equipment

Abstract

The utility model discloses roe incubation promoting equipment which comprises an incubation box (1) with an opening in the top, a square fence (2) is arranged in the incubation box (1), the bottom of the fence (2) is fixed to a bottom plate of the incubation box (1), an incubation area (3) is formed on the inner side of the fence (2), an equipment installation area is formed on the outer side of the fence (2), and a plurality of inclined shading plates (4) are arranged in the fence (2). The light shielding plates (4) are arranged side by side in the horizontal direction to cover the whole hatching area (3), an ascending channel (5) for fish fries is formed between every two adjacent light shielding plates (4), and a light source (6) is arranged above the hatching area (3). The utility model has the advantages of can improve roe hatching success rate and fry survival rate.

Description

Technical Field

[0001] This utility model belongs to the field of fish egg incubation equipment. Background Technology

[0002] In artificial breeding farms, fish eggs are generally incubated using specialized devices, such as the sturgeon hatching pond device described in application number 202420091727.4. This device has oxygenation and temperature control mechanisms, creating favorable conditions for egg hatching. However, the hatching time for each egg may vary. For example, the hatching cycle for Chinese sturgeon eggs at 20℃ is 70-90 days. Some eggs hatch on day 70, while others may not hatch until day 90. This results in a period of coexistence between eggs and fry in the device. To improve the survival rate of the fry, initial feeding must be given within one to two days. This requires workers to promptly remove the fry from the device. However, the mixing of fry and eggs makes retrieval difficult, and the process can easily injure both the eggs and fry, reducing the hatching success rate and fry survival rate. Utility Model Content

[0003] The purpose of this invention is to provide a fish egg hatching promotion device. This invention has the advantages of improving the success rate of fish egg hatching and the survival rate of fish fry.

[0004] The technical solution of this utility model is as follows: a fish egg hatching promotion device, including an incubation box with an open top, a square enclosure inside the incubation box, the bottom of the enclosure being fixed to the bottom plate of the incubation box, an incubation area being formed inside the enclosure, an equipment installation area being formed outside the enclosure, multiple inclined light-blocking plates being provided inside the enclosure, the multiple light-blocking plates being arranged side by side in the horizontal direction to cover the entire incubation area, an upward channel for fish fry being formed between adjacent light-blocking plates, and a light source being provided above the incubation area.

[0005] In the aforementioned fish egg hatching promotion equipment, the light source is an LED lamp with a wavelength of 550-650nm.

[0006] In the aforementioned fish egg hatching promotion equipment, the upper part of the enclosure is provided with multiple circumferentially distributed upper water inlets, the bottom of the enclosure is provided with multiple circumferentially distributed lower water inlets, and the light-blocking plate is located between the upper water inlets and the lower water inlets.

[0007] In the aforementioned fish egg hatching promotion device, both the upper and lower water inlets are rectangular and have a width of less than 0.5 mm.

[0008] In the aforementioned fish egg hatching promotion equipment, a pressure stabilizing chamber is provided on one side of the enclosure. The pressure stabilizing chamber is connected to the hatching area through a water inlet on the corresponding side of the enclosure. A water pump is provided on the pressure stabilizing chamber, with the water inlet of the water pump located on the outside of the pressure stabilizing chamber and the water outlet of the water pump located on the inside of the pressure stabilizing chamber.

[0009] In the aforementioned fish egg hatching promotion equipment, the hatching area is provided with multiple rotating shafts arranged side by side, and multiple circumferentially distributed water-dispensing plates are provided on the rotating shafts. A transmission mechanism is provided between adjacent rotating shafts, and a drive motor is connected to one of the rotating shafts.

[0010] In the aforementioned fish egg hatching promotion device, the two ends of the rotating shaft are rotatably connected to the two sides of the enclosure, and the transmission mechanism includes two pulleys that are respectively connected to the two rotating shafts. An annular belt is provided between the two pulleys, and the transmission mechanism is located on the outside of the enclosure.

[0011] Compared with existing technologies, this invention constructs an incubation zone within the incubation box by enclosing it. A light source is installed above the incubation zone, and multiple inclined light-blocking plates are placed within the zone. Utilizing the phototaxis of fish fry, the fry are attracted upwards, achieving separation between the fry and eggs. This facilitates the retrieval of fry by workers, making feeding easier and reducing the risk of injury to eggs and fry during retrieval, thus improving the hatching success rate and fry survival rate. Because the light-blocking plates cover the entire incubation zone, the eggs below the plates remain in darkness during the light source's operation, minimizing their impact from light and further enhancing the hatching success rate. Therefore, this invention has the advantages of improving the hatching success rate of fish eggs and the survival rate of fish fry.

[0012] Furthermore, by installing water inlets at both the top and bottom of the enclosure and placing a water pump on the outside of the enclosure, the water in the hatching tank is circulated, preventing localized water quality deterioration. This creates favorable conditions for successful egg hatching and fry survival. A drive motor activates a water-dispensing plate, which, in conjunction with the water pump, prevents the eggs from piling up at the bottom of the hatching area and causing oxygen deprivation, thus improving the hatching success rate. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of this utility model.

[0014] Figure 2 This is a top view of the present invention after the light source has been removed.

[0015] The labels in the attached diagram are: 1-Incubator, 2-Enclosure, 3-Incubation area, 4-Shading plate, 5-Upward passage, 6-Light source, 7-Upper water inlet, 8-Lower water inlet, 9-Pressure stabilizing chamber, 10-Water pump, 11-Rotating shaft, 12-Water deflector, 13-Drive motor, 14-Pulley, 15-Annular belt. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0017] Example: A fish egg hatching promotion device for hatching Chinese sturgeon eggs, such as... Figure 1As shown, the incubation box 1 has an opening at the top. Inside the incubation box 1, there is a square enclosure 2. The bottom of the enclosure 2 is fixed to the bottom plate of the incubation box 1. The inner side of the enclosure 2 forms an incubation area 3, and the outer side of the enclosure 2 forms an equipment installation area. Inside the enclosure 2, there are multiple inclined light-shielding plates 4. The multiple light-shielding plates 4 are arranged side by side in the horizontal direction to cover the entire incubation area 3. Both ends of the light-shielding plates 4 are fixed to the enclosure 2. An upward channel 5 for fish fry is formed between adjacent light-shielding plates 4. A light source 6 is provided above the incubation area 3. The light source 6 is an LED lamp with a wavelength of 590nm and a light intensity of 10-50 lux. The LED lamp is connected to the incubation box 1 through a bracket.

[0018] The upper part of the enclosure 2 is provided with multiple circumferentially distributed upper water inlets 7, and the bottom of the enclosure 2 is provided with multiple circumferentially distributed lower water inlets 8. The light shield 4 is located between the upper water inlets 7 and the lower water inlets 8. Both the upper water inlets 7 and the lower water inlets 8 are rectangular and less than 0.5 mm wide, which is used to prevent fish eggs or fry from passing through.

[0019] A pressure-stabilizing chamber 9 is located on the left side of the enclosure 2. The pressure-stabilizing chamber 9 is connected to the hatching area 3 through a lower water inlet 8 on the corresponding side of the enclosure 2. A water pump 10 is installed on the pressure-stabilizing chamber 9. The inlet of the water pump 10 is located above the pressure-stabilizing chamber 9, and the outlet of the water pump 10 is located inside the pressure-stabilizing chamber 9. The pressure-stabilizing chamber 9 is a sealed chamber to ensure that the water discharged from the water pump 10 is pressurized and enters the hatching area 3 more evenly from each lower water inlet 8, avoiding the generation of turbulent currents in the hatching area 3 and protecting the fish eggs.

[0020] The incubation area 3 is provided with multiple rotating shafts 11 arranged side by side. Multiple circumferentially distributed water-repelling plates 12 are provided on the rotating shafts 11. A transmission mechanism is provided between adjacent rotating shafts 11. One of the rotating shafts 11 is connected to a waterproof drive motor 13. The drive motor 13 rotates at a speed of about 45 r / min.

[0021] The two ends of the rotating shaft 11 are rotatably connected to the two sides of the enclosure 2, respectively. The transmission mechanism includes two pulleys 14 that are respectively connected to the two rotating shafts 11, and an annular belt 15 is provided between the two pulleys 14. The transmission mechanism is located on the outside of the enclosure 2 to prevent rotating parts from damaging fish eggs and fry. When one pulley 14 rotates, the other pulley 14 rotates in the same direction under the drive of the annular belt 15.

[0022] A constant temperature heating rod can also be installed between the incubator 1 and the enclosure 2 to keep the water temperature at a suitable temperature for fish egg incubation.

[0023] An air pump can also be installed on the top or outside of the incubator 1. The air outlet of the air pump is submerged in the water between the incubator 1 and the enclosure 2 to increase the dissolved oxygen in the water, thereby increasing the hatching success rate and the survival rate of the fry.

[0024] Instructions for use: Add water to the incubator until the water level is between the top and bottom of the water inlet 7. Place the fish eggs into the incubation area 3. Since the density of the fish eggs is greater than that of water, the eggs will sink to the bottom and be located below the light-blocking plate 4.

[0025] like Figure 1 As shown, when the water pump 10 is started, water from the upper side of the pressure stabilizing tank 9 enters the pressure stabilizing tank 9 and enters the hatching area 3 through the lower water inlet 8 on one side of the enclosure 2. A slow water flow from left to right is formed at the bottom of the hatching area 3, which blows the fish eggs to float to the right.

[0026] The drive motor 13 is periodically activated, causing the rotating shaft 11 to rotate clockwise. This, in turn, causes the other rotating shafts to rotate clockwise, rotating the water-dispensing plate 5 and returning fish eggs that have moved to the right side to the left, preventing them from accumulating on the right side of the hatching area 3. As an optimization, the drive motor 13 can be connected to mains power via a timer. The timer periodically activates the drive motor 13, for example, activating it for ten seconds every minute. The timer can be an Emeijia brand, model S12.

[0027] The water pump 10 and the water-dispensing plate 5 work together to slowly stir the fish eggs back and forth, preventing the fish eggs from piling up together for a long time and causing oxygen deficiency.

[0028] The characteristics of Chinese sturgeon eggs are: an incubation period of 70-90 days at 20℃ water temperature; optimal incubation in a dark environment during the egg stage; and phototaxis (attraction to light) for the first three days after hatching, which gradually disappears thereafter, especially to light at 550-650nm. Therefore, starting from day 70, the light source is turned on for 6.5 hours daily. During this time, due to the effect of the light-blocking plate 4, the unhatched eggs remain in a dark environment, maintaining good incubation results. A small amount of light is refracted through the upward channel 5, attracting fry and causing them to gather on the upper side of the light-blocking plate 4, thus separating them from the eggs and facilitating their collection for feeding. Feeding is not conducted in the incubation area 3 to prevent water quality deterioration.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A fish egg hatching promoting apparatus characterized by comprising: a fish egg hatching promoting device; and a device for moving the fish egg hatching promoting device. The application discloses an incubator (1) with a top opening, wherein a square fence (2) is arranged in the incubator (1), the bottom of the fence (2) is fixed to the bottom plate of the incubator (1), the inner side of the fence (2) forms an incubation area (3), the outer side of the fence (2) forms an equipment installation area, a plurality of inclined light shielding plates (4) are arranged in the fence (2), the plurality of light shielding plates (4) are arranged side by side in the horizontal direction and cover the whole incubation area (3), an uplink channel (5) for fry is formed between adjacent light shielding plates (4), and a light source (6) is arranged above the incubation area (3).

2. The fish egg hatching promoting apparatus according to claim 1, characterized by: The light source (6) is an LED lamp with a wavelength of 550-650 nm.

3. The fish egg hatching promoting apparatus according to claim 2, characterized by: A plurality of upper water outlets (7) are arranged in the circumferential direction at the upper portion of the fence (2), a plurality of lower water outlets (8) are arranged in the circumferential direction at the bottom of the fence (2), and the light shielding plates (4) are located between the upper water outlets (7) and the lower water outlets (8).

4. The fish egg hatching promoting apparatus according to claim 3, characterized by: The upper water outlets (7) and the lower water outlets (8) are rectangular and have a width of less than 0.5 mm.

5. The fish egg hatching promoting apparatus according to claim 1, characterized by: A pressure stabilizing bin (9) is arranged at one side of the fence (2), the pressure stabilizing bin (9) is communicated with the incubation area (3) through the lower water outlet (8) at the corresponding side of the fence (2), a water pump (10) is arranged on the pressure stabilizing bin (9), the water inlet of the water pump (10) is located at the outer side of the pressure stabilizing bin (9), and the water outlet of the water pump (10) is located at the inner side of the pressure stabilizing bin (9).

6. The fish egg hatching promoting apparatus according to claim 5, characterized by: A plurality of rotating shafts (11) are arranged side by side in the incubation area (3), a plurality of water deflectors (12) are arranged in the circumferential direction on the rotating shafts (11), a transmission mechanism is arranged between adjacent rotating shafts (11), and a driving motor (13) is connected to one of the rotating shafts (11).

7. The fish egg hatching promoting apparatus according to claim 6, characterized by: Both ends of the rotating shaft (11) are rotatably connected to two sides of the fence (2), the transmission mechanism comprises two belt pulleys (14) connected to the two rotating shafts (11), respectively, an annular belt (15) is arranged between the two belt pulleys (14), and the transmission mechanism is located at the outer side of the fence (2).

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