CN101627736B - All-in-one fish artificial hatch device - Google Patents

Abstract

The invention relates to a device structure for artificial hatching of aquaculture fish. An integrated fish artificial hatching device, comprising a hatching tray (4) with borders on four sides and a screen at the bottom, characterized in that: in the rectangular hatching tank (1), at least two hatching frames (3) are placed in the length direction ); the hatching rack (3) is a rectangular frame, the upper layer is two bridge arms (3a) whose length is greater than the width of the hatching tank (1), and the lower part is a hatching grid (3b) made of rods, in the hatching grid (3b) ) is configured with a multi-layer drawer frame, and an incubating tray (4) is inserted into the drawer frame. The upper opening of the incubating tray (4) is equipped with a screen cover, and there is a separation distance between the upper and lower layers of the drawer frame. The invention reduces the floor space and construction cost input of artificial hatching facilities; fish eggs do not need to be separated from water during hatching, which reduces the incidence rate and improves the hatching rate of fish eggs; the hatching of fish eggs and the cultivation of larvae are carried out in one device Continuous completion improves the survival rate of seedlings. The structure of the device is simple and reasonable, which greatly reduces the labor intensity of production operations.

Description

Integrated fish artificial hatching device

(1) Technical field

The invention relates to the field of aquaculture, in particular to a device structure for artificial hatching and breeding of fish.

(2) Background technology

Freshwater fish farming plays an important role in aquaculture in my country. According to the statistics of "China Fishery Yearbook 2008", the total amount of aquatic products in 2007 was 47.475 million tons, of which the freshwater aquaculture output was 19.71 million tons, accounting for 41.5% of the total output. In 2007, the total output value of fishery was 495.6 billion yuan, of which the output value of freshwater aquaculture was 216.86 billion yuan, accounting for 43.8% of the total output value. The cultivation of freshwater fish has played an important role in the employment of farmers, the increase of fishermen's income, the prosperity of the fishing area economy, the export of foreign exchange and the stabilization of national prices.

Seed production is the first factor determining the development of aquaculture. In 2007, the country produced more than 29 trillion fishes of various types, including 789.3 billion freshwater fishes, providing aquaculture with a variety of seedlings in sufficient quantity. The output value of aquatic seed accounts for 5% of the total output value of the fishery. However, the hatching of domestic aquatic seed basically depends on natural conditions and environmental conditions. The hatching and cultivation are carried out in traditional ways, often relying on "heaven". Geographical, hydrological and meteorological conditions have great limitations and influences. At the same time, because traditional hatching often adopts flowing water, there are still problems such as large consumption of water resources and serious pollution to the external environment. Factors such as the regionality, seasonality and difficult control of the production process of seed hatching production, as well as the discharge of pollutants have largely restricted the structural adjustment and optimization of cultured species, and restricted the sustainable development of the industry.

With the vigorous development of social economy, technology and productivity, the aquaculture industry has an increasing demand for intensive and efficient farming models that are not limited by geographical conditions. Since the "Ninth Five-Year Plan", relevant domestic scientific research institutes, universities and enterprises have begun to organize scientific and technological research and technological development at different levels, and have made good progress in the research and development of key equipment and system technology for recirculating aquaculture systems. The seed production facility system has been improved, the equipment and technology level has been improved, and a good foundation has been laid for further promoting the development of the entire aquatic seed industry.

Compared with the traditional hatching method, the fully manually controlled closed circulating water hatching technology using circulating water technology combined with advanced automatic online detection of water quality and electrical control technology can effectively reduce the dependence on external environmental conditions and avoid the influence of unfavorable factors. The hatching of seedlings provides the best growth environment conditions, and improves the hatching efficiency and seed quality. At the same time, it can also achieve early hatching or off-season hatching, increase production time, and create favorable conditions for obtaining greater economic benefits. In addition, due to the outstanding advantages of the fully manual control hatching system, such as low water consumption and less pollutant discharge to the environment, it is also of great significance for saving precious water resources and protecting the natural environment we depend on for survival.

The current hatching method generally adopts the hatching tank form. The operation method is: put the fish eggs (the sticky ones need to be debonded first) into the wooden hatching tray, and the bottom of the hatching tray is a screen to store the fish eggs. Generally, every 5 hatching trays are stacked into a group and tied with rubber belts, etc. Tight, and then put into the hatching tank of brick-concrete structure. The direction of water flow in the hatching tank is bottom-in and top-out, and most of them are flowing water hatching. When the eggs hatch into juvenile fish, they drill out from the screen at the bottom of the hatching tray and enter the tank. During the hatching period, the hatching trays are taken out and disassembled several times a day, the fish eggs in each hatching tray are checked and sorted out, diseased eggs, unfertilized eggs and dead eggs are picked out and then stacked and packed back to the hatching tank middle. The entire hatching production operation is cumbersome and the workload is heavy. At the same time, because fish eggs are frequently exposed to the air, the probability of being infected by germs is increased. When the larvae hatch out, they flow out with the water and are discharged out of the hatching tank through a pre-buried dark pipe. They need to be collected manually through tools such as screen trays, and then put into the seedling cultivation tank for seedling cultivation. The larvae themselves are immature and have poor adaptability to the environment. In the process of collection, transfer and release, they are very easy to cause damage to the larvae. Coupled with changes in the water environment, the survival rate of the seedlings is low. This device is designed for the hatching of sinking eggs, of which the carps are the most representative.

(3) Contents of the invention

The purpose of the present invention is to use the existing hatching tray means to place fish eggs, utilize the screen on the hatching tray to not only store fish eggs but also drill out from the pores of the screen after hatching into larvae, to provide an integrated The fish artificial hatching device can not only hatch fish eggs, but also hatch larvae, and reduce and avoid the link of manual manipulation of fish eggs and contact with air, and improve the hatching rate of fish eggs and the survival rate of seedlings.

The purpose of the present invention is achieved by the following technical solutions:

An integrated fish artificial hatching device, including a hatching tray with borders on four sides and a screen at the bottom, characterized in that: in the rectangular hatching tank, at least one hatching frame is placed in the length direction;

The hatching frame is a rectangular frame, the upper layer is two bridging arms whose length is greater than the width of the hatching tank, and the lower part is a hatching grid composed of rods. A multi-layer drawer rack is arranged on the hatching grid, and an incubation tray is inserted into the drawer rack to incubate The upper opening of the tray is equipped with a screen cover, and there is a distance between the upper and lower drawer racks.

Further, the upper end of the hatching tank in the length direction is water inlet, and the bottom of the other end is provided with a drainage port. The bottom plate of the hatching tank is higher on the water inlet side and lower on the drain side, and several support blocks are erected at the bottom of the hatching tank.

Further, the layered drawer racks of the hatching racks have two rows at the front and back and two columns at the left and right on each layer.

Further, the distance between the upper and lower layers of drawer racks is 50 to 80 mm.

Further, the sieve is nylon sieve.

Still further, the sieve is 8 to 12 mesh nylon sieve.

Further, the distance between the two hatching racks, or the distance from the hatching rack to the tank walls at both ends of the hatching tank is greater than or equal to the length of the hatching tray and the length direction of the hatching tank.

Further, the hatching frame is a stainless steel rod or a plastic rod.

With this technical solution, fish eggs are put into the hatching tray, covered with a net cover, inserted into the drawer rack of the hatching rack, placed one by one, separated by a certain distance from each other, and the hatching rack is placed in the rectangular hatching tank , and the hatching tank is filled with water, and the fish eggs are hatched in the hatching tray and in the water of the hatching tank. When the fish eggs hatch into larvae, they will drill out from the screen holes on the upper cover and the lower bottom of the hatching tray, The larvae hatch and grow in the water of the incubator. When the fish eggs are placed in the hatching tray for hatching, the fish eggs in the tray must be checked regularly. In the technical solution of the present invention, the hatching tray does not need to be taken out from the pool as in the past. You only need to put the hatching tray in the water of the hatching tank, pull it out from the drawer of the hatching frame outward, open the net cover to see at a glance, take out the dead eggs, etc., then cover the net cover and push it into the hatching tray, it can be done like this Generally check in sequence, avoiding the deficiencies and drawbacks of the prior art, and greatly improving the hatching efficiency.

Beneficial effects of the present invention: Compared with traditional hatching facilities, this integrated device has 5 advantages: ① reduces the floor space and construction cost of hatching facilities; The integration and optimization of the device greatly reduces the negative impact of production operations and the external environment on the hatching of fish eggs, and improves the hatching rate of fish eggs. ④ The hatching of fish eggs and the cultivation of larvae are completed continuously in one device, which improves the survival rate of seedlings. ⑤ The structure of the device is simple and reasonable, and the operation is convenient, which also greatly reduces the labor intensity of production operations.

(4) Description of drawings

Fig. 1 is an embodiment of the integrated fish artificial hatching device of the present invention, a partial sectional structural schematic view viewed from the side of the hatching tank;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is a left or right view of Fig. 1, that is, a sectional view viewed from both ends;

Fig. 4 is the view after taking out the hatching tray in Fig. 3;

Fig. 5 is an embodiment of the integrated fish artificial hatching device of the present invention, a sectional view of the side view of the hatching tank and the lower erection support block;

Figure 6 is a top view of Figure 5;

Fig. 7 is the left side view of Fig. 5;

Fig. 8 is the top view of the incubation frame of the integrated fish artificial hatching device of the present invention;

Fig. 9 is the front view of Fig. 8 incubating frame;

Fig. 10 is the left view of Fig. 9 incubating frame;

Fig. 11 is a structural view of inserting an incubating tray on the incubating rack in Fig. 10;

Fig. 12 is a schematic diagram of several incubating trays stacked together and tied together by ropes in the prior art.

Among the figure, 1 is a hatch tank, 1a is a drain, 2 is a support block, 3 is an incubation frame, 3a is a bridge arm, 3b is a hatch grid, 4 is an incubation tray, and 5 is a rope.

(5) Specific implementation methods

The structure of the present invention will be further described in detail below in conjunction with the accompanying drawings.

An integrated fish artificial hatching device, comprising a hatching tray 4 with borders on four sides and a screen at the bottom, in a rectangular hatching tank 1, at least one hatching frame 3 is placed in the length direction; the hatching frame 3 is rectangular Frame, the upper layer is two bridging arms 3a whose length is greater than the width of the hatching tank 1, and the lower part is a hatching grid 3b composed of rods. A multi-layer drawer frame is arranged on the hatching grid 3b, and the hatching tray 4 is inserted into the drawer rack. The upper opening of 4 is equipped with a screen cover, and there is a separation distance between the upper and lower drawer racks.

Put the eggs into the hatching tray 4, cover the net cover, insert them into the drawer rack of the hatching frame 3, place them layer by layer, separated by a certain distance from each other, and put the hatching frame 3 into the hatching tank 1 filled with water , the eggs are hatched in the hatching tray 4 and hatched in the water of the hatching tank 1. When the fish eggs hatch into larvae, they will be drilled out from the sieve holes of the hatching tray 4 upper cover and the bottom, and the larvae will be hatched in the hatching tank 1. Hatch and grow in water. When the fish eggs are placed in the hatching tray 4 and hatched to check the fish eggs in the tray, the hatching tray 4 is placed in the water of the hatching tank 1, and is horizontally drawn out from the drawer rack of the hatching frame 3, and the net cover is opened for inspection, and then Cover the net cover and push into the hatching tray 4, thus hatching and larva hatching are carried out to fish eggs.

Above one end of the length direction of the hatching tank 1 is water intake, and the bottom of the other end is provided with a drain port 1a. Such a structure facilitates the formation of an orderly flow of water, which is beneficial to hatching and seedling cultivation, and also facilitates the discharge of water from the lower part.

The layered drawer frame of described hatch frame 3, every layer is two rows before and after, and two columns about. Thereby, the space and water resources of the hatching tank can be fully utilized, and four hatching trays 4 can be placed on one floor to improve hatching efficiency.

The distance between the upper and lower layers of drawer racks is 50 to 80 mm. The sieve is nylon sieve. The mature larvae that are convenient to hatch get out from the space between the two layers from the upper or lower mesh screens, without having to disassemble each hatching tray 4 as in the past.

The sieve is 8 to 12 mesh nylon sieve. Such screen material and specifications are more suitable for placing fish eggs and larvae to drill out.

The distance between the two hatching racks 3, or the distance from the hatching racks 3 to the walls at both ends of the hatching tank 1 is greater than or equal to the length of the hatching tray 4 in the same length direction as the hatching tank 1. In order to facilitate inspection and treatment operations in the water of the hatching tank, it is necessary to reserve an appropriate distance in the direction where the hatching tray 4 is drawn out.

The hatching frame 3 is a stainless steel bar or a plastic bar, which is easy to obtain, suitable for making and using, and is cheap and good in quality.

The organic integration of the fish egg hatching device and the fish fry cultivation device enables the hatching and cultivating of fish fertilized eggs to be carried out continuously in one device, cancels the routine operation procedures such as collection and transfer of larvae, and improves the hatching rate and larvae growth rate. Survival rate, reducing the labor intensity of fish hatchery production.

The hatching device adopts a three-dimensional multi-layer drawer-like structure, which can visually and conveniently observe the hatching status of fish eggs, facilitate the selection and separation of problematic fertilized eggs, and greatly reduce the difficulty of operation during the hatching period.

Incubation device is made up of incubation dish 4 and support. The hatching tray 4 is a frame structure, and the bottom is fixed with 8 to 12 orders, preferably 10 orders of nylon sieve silk, which can prevent fertilized eggs from leaking out, and can allow hatched larvae to swim out into the cultivation device simultaneously. Incubation dish 4 is furnished with mesh cover, can be made up of stainless steel or 10 mesh nylon sieve silks, in order to prevent fertilized eggs from escaping from the incubation dish.

The hatching frame is made of stainless steel or plastic frame structure, and the top is two cross-bar bridging arms, which are supported on the side wall of the hatching tank, so that the hatching frame is suspended and submerged in the water in the tank. The main part of the hatching frame is a double-row double-row multi-layer drawer shelf, which is used to place the hatching trays. Each hatching tray can be placed and taken out conveniently, which is convenient for operation during hatching production.

The integrated fish artificial hatching device greatly improves the land utilization rate, reduces the construction cost of artificial hatching facilities, and at the same time, the hatching capacity of fish eggs per unit area can be more than doubled.

Claims (8)

1. all-in-one fish artificial hatch device comprises that there is frame on four limits, and the bottom is the incubation plate (4) of screen cloth, it is characterized in that: in the incubation tank (1) of cuboid, place a hatching frame (3) at least at length direction;

The rectangular framework of described hatching frame (3), the upper strata is the bridging arms (3a) of two length greater than incubation tank (1) width, the hatching lattice (3b) of bottom for constituting by rod member, go up the configuring multi-layer drawer frame at hatching lattice (3b), in drawer frame, insert incubation plate (4), incubation plate (4) suitable for reading is furnished with the screen cloth lid, has spacing distance between the two-layer up and down drawer frame.

2. according to the described all-in-one fish artificial hatch device of claim 1, the end top that it is characterized in that described incubation tank (1) length direction is water inlet, discharge outlet (1a) is offered in the bottom of the other end, base plate influent side height, discharge outlet (1a) side of incubation tank (1) are low, and some back-up blocks (2) are set up in the bottom of incubation tank (1).

3. according to the described all-in-one fish artificial hatch device of claim 1, it is characterized in that the layering drawer frame of described hatching frame (3), every layer is front and back two rows, about two row.

4. according to the described all-in-one fish artificial hatch device of claim 1, it is characterized in that the spacing distance between the two-layer drawer frame is 50 to 80 millimeters up and down.

5. according to the described all-in-one fish artificial hatch device of claim 1, it is characterized in that described screen cloth is the nylon bolting silk.

6. according to the described all-in-one fish artificial hatch device of claim 5, it is characterized in that described screen cloth is 8 to 12 order nylon bolting silks.

7. according to the described all-in-one fish artificial hatch device of claim 1, it is characterized in that the distances between described two hatchings framves (3), or hatching frame (3) to the distance of incubation tank (1) two ends cell wall more than or equal to incubation plate (4) and the consistent length of incubation tank (1) length direction.

8. according to the described all-in-one fish artificial hatch device of claim 1, it is characterized in that described hatching frame (3) is stainless steel pole stock or plastics pole stock.

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