CN201374955Y - A hatching device for shrimp, fish or crab larvae - Google Patents

Abstract

The utility model relates to an animal breeding device, in particular to a hatching device for shrimp, fish or crab larvae, comprising a first hatching container and a second hatching container; the bottom of the first hatching container is provided with a water inlet device, the first The incubator is provided with a first filter screen for filtering incoming water, and the top of the first incubator and the second incubator are connected with a diversion pipe that can guide water from the first incubator to the second incubator; in the second incubator A second filter screen for filtering the imported water is provided, and a drainage device is provided at the bottom of the second hatching container. The utility model can effectively screen unfertilized or abnormally developed eggs of shrimp, fish or crab larvae, and is simple, practical and efficient.

Description

A hatching device for shrimp, fish or crab larvae

technical field

The utility model relates to an animal breeding device, in particular to a breeding device for shrimps, fishes or crabs.

Background technique

At present, the aquaculture area of shrimp, fish or crab is expanding rapidly, especially Litopenaeus vannamei, which is not only cultivated in coastal areas, but can also be artificially cultivated inland with pure fresh water after gradual desalination. The hatching equipment for artificial breeding in the prior art mainly consists of three parts, namely: a water inlet system, a hatch tank and a filter drainage system. During the hatching process, the fertilized eggs are continuously moved up and down in the barrel under the action of the water flow through the water inlet and the water outlet, so that they can be hatched without sinking to the bottom and suffocating to death. However, the existing schemes cannot effectively screen unfertilized or abnormally developed eggs.

In fact, if unfertilized and malformed eggs cannot be effectively screened, they will often enter the stage of shrimp cultivation, which not only affects the judgment of technicians, but also directly leads to the deterioration of water quality, which in turn affects the growth rate and emergence of shrimp The rate has greatly affected the production efficiency of breeding seedlings. Thereby finding the way that can effectively remove unfertilized and deformed dead eggs is one of the key factors to improve the quality of cultivating shrimp seedlings at present. Equally, also face same problem to other shrimp species, or the larva culture of fish or crab.

Utility model content

The purpose of the utility model is to provide a simple, practical and efficient hatching device for shrimp, fish or crab larvae, which can effectively screen unfertilized or abnormally developed eggs.

In order to achieve the above object, the technical solution adopted by the utility model is: a hatching device for shrimp, fish or crab larvae, comprising a first hatching container and a second hatching container; the bottom of the first hatching container is provided with The water inlet device, the first incubator is provided with a first filter screen for filtering the incoming water, the top of the first incubator and the second incubator are connected with a diversion tube that can guide water from the first incubator to the second incubator ; The second incubator is provided with a second filter screen for filtering the imported water, and the bottom of the second incubator is provided with a drainage device.

Furthermore, the first filter screen is set in the position where the ratio of the upper and lower parts in the first hatching container is 3:1 to 4:1; the second filter screen is set in the second hatching container where the ratio of the upper and lower parts is 5:1～6:1 position.

Furthermore, the meshes of the first filter and the second filter both range from 250 to 300 mesh.

Furthermore, the first incubator and the second incubator are provided with inflatable tubes.

Furthermore, the water inlet device is a water inlet provided on the bottom side of the first hatching container; a water outlet is provided on the top side of the first hatching container, one end of the water outlet pipe is connected to the water outlet, and the other end of the water outlet pipe is arranged on the second In the hatching container and located on the top of the second filter net, the top of the first hatching container is 20-30cm higher than the top of the second hatching container.

Furthermore, the drainage device is a gap at the bottom of the second incubation container, the second incubation container is arranged in the drainage container, and the top of the second incubation container is higher than the top of the drainage container.

Furthermore, the top of the second incubation container (2) is 5-10 cm higher than the top of the drainage container (8).

Compared with the prior art, the utility model has the following remarkable features: firstly, the preheated constant-temperature water flows into the water inlet at the bottom of the first hatching container, and the fertilized eggs of cultured animals first pass through the first hatching container separated by the first filter screen. The upper part is active, and when the water overflows, the vigorous and normal larvae will flow to the second hatching container through the water outlet on the upper side of the first hatching container along with the water flow, while those unfertilized, developing Deformed and poor vigor will be left in the first hatching container and eliminated. Vigorous, normally developing larvae continue to develop in the second hatchery. Secondly, there is a gap at the bottom of the second hatching container, and excess water flows into the drainage container through the gap, and the waste discharged during the larval development process is taken away to keep the water quality fresh, so that the external physical and chemical factors for the larval development are always in the best state . Finally, the technique for realizing the utility model is simple, and can be realized with a barrel and a rubber conduit, which is simple and low-cost.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Fig. 1 is the structural representation of the utility model. A hatching device for shrimp, fish or crab larvae, comprising a first hatching container 1 and a second hatching container 2; the bottom side of the first hatching container 1 is provided with a water inlet device 3, and the water inlet device 3 For the water inlet, there are two water inlets in the specific embodiment. The upper and lower parts of the first hatching container 1 are provided with a first filter net 4 at a position where the ratio of the upper and lower parts is 3:1-4:1, and the mesh number range of the first filter net 4 is 250-300 mesh.

During the breeding process, preheated constant temperature water enters from the water inlet device 3, and the fertilized eggs of the cultured animals are placed in the upper half of the first incubation container 1 separated by the first filter screen 4.

A draft pipe 5 is connected between the top of the first incubation container 1 and the second incubation container 2; when the preheated constant temperature water reaches the top of the first incubation container 1, it will flow into the second incubation container 2 through the draft pipe 5. In a specific embodiment, a water outlet is provided on the top side of the first hatching container 1, and one end of the water outlet pipe 5 is connected to the water outlet, and the other end of the water outlet pipe 5 is arranged in the second hatching container 2 and is positioned on the top of the second filter screen 6. The first hatching The top of the container 1 is 20-30 cm higher than the top of the second hatching container 2 , and the water flows into the second hatching container 2 through this height drop.

The second incubator 2 is provided with a second filter screen 6 for filtering the imported water, and the bottom of the second incubator 2 is provided with a drainage device 7 . Specifically: the second filter screen 6 is located in the second incubation container 2 at a position where the ratio of the upper and lower parts is 5:1 to 6:1, and the mesh number range of the second filter screen 4 is also 250 to 300 mesh. The drainage device 7 is a bottom gap of the second hatching container 2, meanwhile, the second hatching container 2 is also arranged in a draining container 8, and the top of the second hatching container 2 is about 10 cm higher than the top of the draining container 8.

In order to increase the oxygen content of the entire breeding container, the first hatching container 1 and the second hatching container 2 are provided with inflatable tubes 9, and the inflatable tubes input air into the hatching containers through the inflation device.

The working principle is: the water inlet at the bottom of the first hatching container 1 flows into the preheated constant temperature water, and the fertilized eggs of the cultured animals first move in the upper half of the first hatching container 1 separated by the first filter 4, when the water overflows The larvae with strong vitality and normal development will pass through the water outlet on the upper side of the first hatching container 1 to the second hatching container 2 along with the water flow, while those that are not fertilized, deformed, and have poor vitality will were left in the first hatching container 1 and were eliminated. The larvae with strong vitality and normal development continue to develop in the second hatching container 2 .

The bottom of the second hatching container 2 is a gap, and excess water flows into the drainage container through the gap, and the waste discharged during the development of the larvae is taken away to keep the water quality fresh, so that the external physical and chemical factors for the development of the larvae are always in the best state.

The first hatching container 1 and the second hatching container 2 of the specific embodiment of the utility model are barrels, and the guide tube 5 can be a plastic tube, which is easy to implement and low in cost. It has good effect and wide promotion prospect for the hatching of larvae of shrimps, fishes or crabs.

Claims (7)

1, a kind of hatching apparatus at shrimps, fish or the crab class young is characterized in that: comprise first incubation vessel (1), second incubation vessel (2);

Described first incubation vessel (1) bottom is provided with water feed apparatus (3), be provided with first screen pack (4) of filtered water inlet in first incubation vessel (1), be connected the mozzle (5) that can guide water to flow to second incubation vessel (2) from first incubation vessel (1) between first incubation vessel (1) top and second incubation vessel (2);

Be provided with in described second incubation vessel (2) and filter second screen pack (6) that imports water, second incubation vessel (2) bottom is provided with drainage arrangement (7).

2, the hatching apparatus at shrimps, fish or the crab class young according to claim 1 is characterized in that: two parts ratio was 3: 1～4: 1 position about described first screen pack (4) was located in first incubation vessel (1); Two parts ratio was 5: 1～6: 1 position about described second screen pack (6) was located in second incubation vessel (2).

3, the hatching apparatus at shrimps, fish or the crab class young according to claim 2, it is characterized in that: the order scope of counting of described first screen pack (4) and second screen pack (6) is 250～300 orders.

4, the hatching apparatus at shrimps, fish or the crab class young according to claim 3, it is characterized in that: first incubation vessel (1) and second incubation vessel (2) are provided with gas tube (9).

5, according to each described hatching apparatus at shrimps, fish or the crab class young of claim 1～4, it is characterized in that: described water feed apparatus (3) is the water inlet that the bottom sides of first incubation vessel (1) is provided with; Described first incubation vessel (1) top-side is provided with delivery port, outlet pipe (5) one ends connect delivery port, outlet pipe (5) other end is located in second incubation vessel (2) and is positioned at second screen pack (6) top, and the top of first incubation vessel (1) is than the high 20～30cm in top of second incubation vessel (2).

6, the hatching apparatus at shrimps, fish or the crab class young according to claim 5, it is characterized in that: described drainage arrangement (7) is second incubation vessel (a 2) bottom notch, described second incubation vessel (2) is located in the drain vessel (8), and the top of second incubation vessel (2) is higher than the top of described drain vessel (8).

7, the hatching apparatus at shrimps, fish or the crab class young according to claim 6, it is characterized in that: the top of second incubation vessel (2) is than the high 5～10cm in top of drain vessel (8).

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