A fish hatching breeding system

Abstract

The invention relates to a fry hatching and breeding system. The system comprises a hatching cylinder, a sieve bend, a settling and storing water tank, a circulating pump, a sand filter and an ultraviolet sterilization lamp which are connected in sequence, wherein an air supply system is arranged in the hatching cylinder, a warmer is arranged at the rear end of the settling and storing water tank, a fry collecting tank is oblique downwards, and an auxiliary flushing water pipe is arranged at the tail end of the fry collecting tank. The hatching process comprises the steps that the circulating pump is started to enable water to flow into the sand filter, be sterilized through the ultraviolet sterilization lamp and enter the hatching cylinder through the bottom of the hatching cylinder so as to provide annular water for the interior of the hatching cylinder together with the air supply system; water flow overflows through an upper water drainage port to flow into a water collecting pipe, then is filtered through the sieve bend, flows into the settling and storing water tank, is warmed and adjusted by the warmer, and then is recycled through the circulating pump. The fry discharging process comprises the steps that the auxiliary flushing water pipe at the tail end of the fry collecting tank is started, a water inlet valve is closed, a fry discharging valve is open, and fry are collected through the fry collecting tank and then enter a nursing pond through the fry collecting tank to be temporarily bred in batches.

Description

technical field [0001] The invention relates to a fry hatching and breeding system, which belongs to the technical field of fry hatching and breeding. Background technique [0002] 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 t...

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Problems solved by technology

[0005] 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

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