CN104904628B - A kind of fry hatching breeding system - Google Patents

Abstract

The invention relates to a fry hatching and breeding system, which comprises a hatching bucket, a curved screen, a sedimentation storage tank, a circulation pump, a sand filter, and an ultraviolet germicidal lamp connected in sequence; There is a heater at the back end of the pool; the seedling collection tank has an inclined downward slope, and an auxiliary flushing water pipe is installed at the end; the hatching process: start the circulation pump, the water flows into the sand filter, and then sterilizes through the ultraviolet germicidal lamp, and then passes through the hatching process. The bottom of the barrel enters the hatching barrel, and together with the air supply system, it provides the circular water flow inside the hatching barrel. The water flow overflows from the upper drain and flows into the water collection pipe. After being filtered by the curved screen, it flows into the sedimentation reservoir. After being heated and adjusted by the heater , and then reused through the circulating pump; seedling discharge process: open the auxiliary flushing water pipe at the end of the seedling collection tank, close the water inlet valve, open the seedling discharge valve, after the fry are collected through the seedling collection tank, they enter the standard thick pool through the seedling collection tank in batches Temporary care.

Description

A fish hatching breeding system

technical field

The invention relates to a fry hatching and breeding system, which belongs to the technical field of fry hatching and breeding.

Background technique

In recent years, the aquaculture industry has achieved new development, and a large number of large-scale aquaculture farms have emerged in coastal areas. The increase in breeding volume has driven the demand for fingerlings. However, due to various objective reasons, the development of nursery farms lags behind seriously. At present, in traditional nursery farms, after the fertilized eggs are cleaned and entered into the hatching bucket to rinse and hatch, or each hatching bucket needs to be connected to a hose to collect seedlings in the seedling collection pool, they are manually transported to the standard thick pool. This process consumes a lot of water; it requires a lot of labor and is labor-intensive; carrying fry from the seedling pond to the standard thick pond will inevitably consume the fry again and reduce the survival rate of the fry.

The existing hatching tank consumes a lot of water, and the hatching water is often discharged directly, resulting in waste and pollution.

In order to ensure the quality and survival rate of fry, it is necessary to build or upgrade the hatchery. Under this background, the present invention arises at the historic moment.

Contents of the invention

The technical problems to be solved in the present invention are: 1. In the existing fry hatching and breeding system, the fry discharged from the hatching tank need to be manually transported to the standard thick pool, which consumes a lot of manpower to carry repeatedly; 2. The hatching water is often directly discharged, resulting in waste 3. The internal circulation of the hatching tank adopts hydraulic circulation, the water supply pressure needs to be high, the strength of the pipeline needs to be large, and the power loss is large; 4. The strength of the hydraulic circulation in the hatching tank needs to be weakened with the passage of time, and it needs to be adjusted by adjusting the water inlet valve. Body opening control is troublesome; 5. Using hoses to collect eggs requires manual insertion of ovulation tubes one by one; 6. Since the hatching time is generally seven days, seedling farms often use high-level pool water supply hatching mode, which consumes a lot of water and raises seedlings. The process is greatly affected by the surrounding water quality.

The present invention adopts following technical scheme:

A fry hatching and breeding system, characterized in that: it includes a hatching bucket 1, a curved screen 3, a sedimentation reservoir 4, a circulating pump 6, a sand filter 7, and an ultraviolet germicidal lamp 8 connected in sequence; the hatching bucket 1 is An air supply system 2 is provided, and a heater 5 is provided at the rear end of the sedimentation reservoir 4; the seedling collection tank 9 has a slope downward, and an auxiliary flushing water pipe is provided at the end; the hatching process: start the circulation pump 6, and the water flows into Sand filter 7, after being sterilized by ultraviolet germicidal lamp 8, enters hatching barrel 1 through the bottom of the hatching barrel, and provides circular water flow inside the hatching barrel together with the air supply system 2, and the water flow overflows from the upper drain into the water collection pipe and passes through the curved screen 3 After filtering, it flows into the sedimentation reservoir 4, and after being heated and regulated by the heater 5, it is reused by the circulation pump 6; the seedling discharge process: open the auxiliary flushing water pipe at the end of the seedling collection tank 9, close the water inlet valve 11, Open seedling discharge valve 10, after fry is collected by collecting seedling groove 9, enter standard coarse pond by collecting seedling groove and raise temporarily in batches.

The characteristics of this technical solution are: it provides a set of purely physical hatching water flow filtration system, which will not cause any adverse effects on fry, saves water sources, adopts the dual functions of aeration and water flow impact to hatch fish eggs, and the hatching effect is better. Effectively save water source; the seedling collection tank 9 inclined downward is adopted, and the auxiliary flushing water pipe at the end flushes water, so that the seedlings falling into the seedling collection tank are rushed forward in time to prevent fish fry from getting stuck on the seedling collection tank and dying due to lack of water; At the same time, there is no need to manually carry fry, reducing labor intensity.

Further, the main pipe 12 at the bottom of the hatching bucket 1 is connected with the ovulation branch pipe and the water inlet pipe through a three-way joint, and the inner diameter of the water inlet pipe is one-third to one-half of the inner diameter of the seedling discharge branch pipe. Due to the use of the air supply system, the intensity of the hatching impact water flow is reduced. By reducing the inner diameter of the water inlet pipe, the flow rate can be reduced, the flow rate can be increased, the impact force of the water flow can be improved, and water is saved. However, the bottom is used as a seedling outlet, which requires a large The diameter of the pipe can reduce the casualty rate of fry, so the above-mentioned special settings are carried out.

Further, the incubator 1, the curved screen 3, the sedimentation reservoir 4, and the ultraviolet germicidal lamp 8 are two groups connected in parallel, and the circulation power is provided by the same circulating pump 6; the sand filter 7 is four in parallel, when When one of the sand filter tanks is backwashing, the other three work, thereby ensuring continuous filtration during the incubation process, and there is no waiting time for backwashing.

Furthermore, the floor of the hatching tank is 300mm lower than the floor of the workshop to keep the aisle free of water.

The beneficial effects of the present invention are:

1) Through the effective use of water resources, reduce labor intensity and improve the survival rate of fry.

2) A two-level physical filtration system is adopted to advance the breeding time, reduce the humidity in the workshop, and greatly reduce the water consumption for breeding;

3) The adjustable air-assisted stirring system is adopted, which reduces the power requirement of the lift pump, saves energy, and can conveniently adjust the size of the circulating water flow in the incubator while the flow remains unchanged;

4) The special three-way structure is adopted, which not only ensures the reduction of the casualty rate of fish fry, but also improves the utilization efficiency of water impact.

4) The collection of seedlings through the seedling collection tank avoids the problems of hypoxia and fry handling in the seedling collection process, reduces the labor of operators, and improves the survival rate of fry.

5) Compared with the traditional hatching and breeding system, the cost of the system has not increased greatly, and the survival rate of fry is improved, which is more suitable for the transformation and use of the domestic traditional hatching and breeding system at the current stage.

Description of drawings

Fig. 1 is the first process sectional view of the fry hatching and breeding system of the present invention.

Fig. 2 is a second process sectional view of the fry hatching and breeding system of the present invention.

Fig. 3 is the right side view of the fry hatching breeding system of the present invention.

FIG. 4 is a partially enlarged view of FIG. 3 .

In the figure, 1. Incubation barrel, 2. Air supply system, 3. Curved screen, 4. Sedimentation reservoir, 5. Warmer, 6. Circulation pump, 7. Sand filter, 8. Ultraviolet germicidal lamp, 9 . Seedling trough, 10. Seedling discharge valve, 11. Water inlet valve, 12. Main pipe.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1-Fig. 4, a fry hatching and breeding system is characterized in that it includes a hatch tank 1, a curved screen 3, a sedimentation reservoir 4, a circulation pump 6, a sand filter 7, and an ultraviolet germicidal lamp 8 connected in sequence ; The hatching bucket 1 is provided with an air supply system 2, and the rear end of the precipitation reservoir 4 is provided with a heater 5; the seedling collection tank 9 has a slope downward, and the end is provided with an auxiliary flushing water pipe; the hatching process: Start the circulating pump 6, the water flow flows into the sand filter 7, and after being sterilized by the ultraviolet germicidal lamp 8, it enters the hatching barrel 1 through the bottom of the hatching barrel, and together with the air supply system 2, provides the circular water flow inside the hatching barrel, and the water flow overflows into the hatching barrel from the upper drain. The water collection pipe, after being filtered by the curved screen 3, flows into the sedimentation reservoir 4, and after being heated and regulated by the heater 5, it is reused by the circulation pump 6; the seedling discharge process: open the auxiliary flushing water pipe at the end of the seedling collection tank 9 , close the water inlet valve 11, open the seedling discharge valve 10, after the fry are collected by the seedling collection tank 9, enter the standard thick pond by the seedling collection tank to raise temporarily in batches.

Referring to Fig. 4, the main pipe 12 at the bottom of the hatching bucket 1 is connected with the seedling discharge branch pipe and the water inlet pipe through a tee joint, and the inner diameter of the water inlet pipe is 1/3rd to 1/2 of the inner diameter of the seedling discharge branch pipe. Due to the use of the air supply system, the intensity of the hatching impact water flow is reduced. By reducing the inner diameter of the water inlet pipe, the flow rate can be reduced, the flow rate can be increased, the impact force of the water flow can be improved, and water can be saved. However, the bottom is used as the ovulation port, and a larger The diameter of the pipe reduces the casualty rate of fry, so the above-mentioned special settings are carried out.

Referring to Fig. 3, the hatching bucket 1, curved screen 3, sedimentation reservoir 4, and ultraviolet germicidal lamp 8 are two groups connected in parallel, and the circulation power is provided by the same circulating pump 6; the sand filter 7 is four in parallel, When one of the sand filter tanks is backwashing, the other three work, and the other three increase the water output, thereby ensuring continuous filtration during the incubation process, and there is no waiting time for backwashing.

In this embodiment, the seedling collection pool is omitted, and the fry and the hatching water enter the standard rough pool together through the seedling collection tank, reducing secondary handling, improving the survival rate, and reducing labor intensity; air-water combined circulation is used in the hatching tank to reduce water supply pressure. Save water supply; the power of the circulating water pump only provides low-intensity circulation intensity, and the high-intensity circulation in the early stage is assisted by air lift to provide power, so there is no need to frequently adjust the opening of the water inlet valve body; the water inlet uses small pipes to distribute water to ensure that the water inlet intensity of each pool is uniform; through The variable diameter is connected with the three-way connection of the seedling discharge pipe to ensure that the diameter of the seedling discharge port remains relatively large; the seedling collection tank is used to connect the hatching bucket and the standard thick pool, avoiding manual insertion of the seedling discharge pipes one by one; before the seedlings are released, the seedling collection tank The end is sprayed in advance to form an attached water layer at the bottom of the seedling collection tank, which reduces the death of the early fry from the water body with the backflow of the water flow, and is conducive to pushing the remaining fry into the standard thick pool at the end of the hatching tank, effectively improving the survival rate; using circulation Water, the energy consumption has not been increased, but the water consumption has been greatly reduced, and the impact of low temperature and peripheral water quality on the hatching process has been reduced; according to the characteristics of the hatching water body, circulating water is mainly used for secondary physical filtration to remove SS, mainly turbidity, and Disinfection and reuse, instead of using the biological filtration technology used in traditional secondary treatment, the incubation time is much lower than the sludge sludge age required for biological filtration; 4 parallel sand filters are used, and when one of them is backwashed, the other three The water output borne by each water output will not cause a rapid increase in water pressure; the use of a circulating water system avoids direct drainage, reduces the humidity in the workshop, and is conducive to increasing the service life of other electrical equipment in the workshop; the floor of the hatching tank is lower than the floor of the workshop The ping is 300mm, and there is no water in the aisle; the standard thick pool is directly covered with a plastic tube, which is convenient for collecting fry by hanging nets in batches.

With the rapid development of aquatic product farming, excellent seed is one of the most basic elements to ensure aquatic products. The circulation hatching and breeding system adopted in the present invention reduces labor intensity and improves fry survival rate by effectively utilizing water resources. In the application process of the present invention, compared with the traditional hatching and breeding, a two-level physical filtration system is adopted to advance the breeding time, reduce the humidity in the workshop, and greatly reduce the water consumption for breeding; the adjustable air-assisted stirring system is used to reduce the operating pressure of the lift pump. Power requirements, energy saving, and the size of the circulating water flow in the hatching tank can be adjusted conveniently while the flow rate is constant; seedlings are collected through the seedling collection tank, which avoids the problem of hypoxia and fry handling during the seedling collection process, and reduces the labor of the operator. Increased fry survival rate. Compared with the traditional hatching and breeding system, the cost of the system has not increased greatly, and the survival rate of fry is improved, which is more suitable for the transformation and use of the traditional domestic hatching and breeding system at the current stage.

Claims (2)

1. a kind of fry hatching mating system, it is characterised in that：

Fry hatching breeding system includes the hatching barrel (1) being linked in sequence successively, sieve bend (3), precipitation cistern (4), circulation Pump (6), sand filtration (7), ultraviolet germicidal (8)；It is provided with the hatching barrel (1) after air supply system (2), precipitation cistern (4) End is provided with warmer (5)；Collect seedling groove (9) with the gradient diagonally downward, end is provided with auxiliary wash tub pipe；

Hatching process：Start circulating pump (6), current flow into sand filtration (7), then by ultraviolet germicidal (8) sterilize after, pass through hatching Bottom of the barrel enters hatching barrel (1), and provides hatching barrel inner annular current jointly with air supply system (2), and current are by upper discharge outlet Overflow and flow into collector pipe, after being filtered by sieve bend (3), flow into precipitation cistern (4), after warmer (5) heating regulation, Pass through circulating pump (6) reuse again；

Arrange seedling process：The auxiliary wash tub pipe of collection seedling groove (9) end is opened, water intaking valve (11) is closed, the row's of unlatching seedling valve (10), fish Seedling is temporarily supported in batches by collecting after seedling groove (9) collection by collecting seedling groove into standard crude pool；

The house steward (12) of hatching barrel (1) bottom, which is in charge of with row's seedling by three-way connection and intakes to be in charge of, to be connected, and the water inlet is in charge of Internal diameter be ovulation be in charge of 1st/1st to two/3rd of internal diameter；

The hatching barrel (1), sieve bend (3), precipitation cistern (4), ultraviolet germicidal (8) they are in parallel two groups, and by same Circulating pump (6) provides circulation power；Sand filtration (7) is in parallel four, when wherein one sandfiltration pot backwash, in addition three Platform works, and then ensures that hatching process is continuously filtered, and does not backwash the stand-by period.

2. fry hatching mating system as claimed in claim 1, it is characterised in that：Hatching barrel terrace is less than workshop terrace 300mm, keeps passageway without ponding.