RU238813U1 - INSTALLATION FOR INCUBATION AND REARING OF JUVENILE AFRICAN CATFISH - Google Patents

Abstract

The utility model relates to agriculture, namely to installations for incubating and rearing young African catfish. A device for incubating eggs and rearing juvenile African catfish, comprising four tanks (1) with a volume of 60 liters and a drain line (5) with a diameter of 50 mm located along the water flow, a settling tank (6) with a volume of 120 liters, a biological filter (9) with a volume of 120 liters filled with a load (10) with a surface area of 800 ^m2 / ^m3 , a UV sterilizer (15) and a distribution unit (16) with taps for controlling the water supply to each tank, while in each of the tanks there is a mesh frame (2), a drain (3) and an aerator (4), in the settling tank (6) there are two drains (7) made with the possibility of controlling the water level due to the angle of inclination, in the biological filter (9) there are a pump (11) with a flow rate of 1 ^m3 /h and a heater (12) with a capacity of 400 separated from the load by a mesh partition (13) Tue, on the table top (18) there is a compressor (19) with wiring to aerators (4) and a biological filter (9).

Description

The utility model relates to agriculture, namely to installations for incubating and rearing young African clariid catfish.

A known setup includes a sectional stand, a water supply and drainage system, and incubation units arranged in tiers. It also has a supply tank mounted above the incubation units, a water temperature control system, and a flotation filter. The incubation units are equipped with two sequentially arranged frames, one made of perforated fabric, and the other of vertical strips, forming bounded rectangular cavities with a perforated bottom. The perforated fabric of the upper frame has a mesh pitch that accommodates the eggs and allows the passage of hatched larvae. A water intake compartment with a mesh filter is located on one end wall of each unit, and a water drainage compartment is located on the opposite wall. The water supply and drainage system has a closed loop with a make-up connection from an external water source. The device is compact and allows to reduce water consumption (RU 2 271 100 C1, 17.08.2004).

The disadvantages of this setup include the impossibility of raising fry, the lack of biological treatment in a closed circuit, and it is not suitable for sharptooth catfish.

A system for incubating eggs and growing juvenile fish is known, comprising a juvenile fish rearing tank, an incubation apparatus, circulation pumps, a water purification device, and a water aeration device. The system is located on the shore of a reservoir. Two pumps equipped with mud filters are used for water aeration. One pump is installed in the juvenile fish rearing tank and is connected via a hose to the incubation apparatus, while the other is installed in the reservoir and is connected via a hose to the fish-breeding tank. A cage located in the reservoir serves as the fish-breeding tank (RU 128 820, U1, 10.06.2013).

The disadvantages of this device include its connection to water bodies and the impossibility of using it in incubation workshops, the lack of secondary use of water, the lack of thermoregulation, the lack of water disinfection, the need to de-glue the eggs before incubation, and it is not adapted for clariid catfish.

The closest to the proposed utility model is the installation for incubating eggs and growing young fish (RU 26 367 U1, 17.06.2002), selected as a prototype, which includes incubation apparatus, tanks for growing young fish, a circulating water system,

which includes a settling system, a circulating water system pump, a circulating water purification device, a bactericidal device, a device for aerating circulating water, a wind generator, a diesel generator, a heat exchanger, a thermal energy storage tank with an electric heater, a circulating water heating-cooling system including coils, and a pump, all interconnected by pipelines.

The disadvantage of the known installation is the complexity and cumbersomeness of the installation, the high cost of the components, and hence the high cost of obtaining planting material.

The technical challenge is to create a compact, independent installation that allows for the incubation of unglued African catfish eggs with subsequent rearing of juveniles up to 10 g without replanting.

The technical result is a simple-to-use installation for incubating African sharptooth catfish eggs on mesh frames, with subsequent rearing of juveniles up to a weight of 10 g, including a complete water treatment unit, with maintenance of the necessary conditions.

This unique setup consists of four 60-liter tanks for incubation and rearing, each containing a mesh frame for egg incubation. The frames are rectangular pontoon structures, the center of which is covered with 1mm mesh. After incubation, the frames are removed from the tanks. Oxygen is provided by continuous aeration, with aerators in each tank connected to a single piston compressor. Water drains from each tank through a "lantern"—a plugged pipe with a mesh smaller than the size of the fish being reared. To ensure optimal flow and ease of use, the "lanterns" are replaced when dirty, cleaned separately from the incubator, and dried. Water then drains through an elbow, which maintains the water level in the tank, even when the water supply is turned off. The drain structure is removable for draining the tanks. Water from the tanks flows by gravity into a 50mm diameter drain line, which then flows into a 120-liter settling tank. The settling tank has two drains. The drains consist of two pipes with a 90° angle and a flared end, allowing for surface water collection and water level control due to the angle of inclination. The settling tank is mechanically filtered of suspended matter, and sediment is collected using a siphon. From the settling tank, water is fed through two 25mm diameter connecting pipes to a 120-liter biological filter filled with biological filter media with a surface area of 800 ^m² / ^m³ . The media in the biological filter is continuously aerated. The biological filter contains a mesh partition, behind which is a pump with a flow rate of 1 ^m³ /h to ensure flow and a 400-watt heater to maintain an optimal temperature. A pump pumps water through a 25mm diameter pipe into the UV sterilizer for disinfection. The water is then fed through a 25mm diameter pipe into a distribution unit with valves for regulating the flow to each container. The trays and compressor are mounted on a countertop. The UV sterilizer can be wall-mounted or placed on a stand. All connections are detachable, making the unit easy to disassemble and assemble, and easy to transport. The water treatment unit reduces water consumption to evaporation losses.

The unit is unique in that it is used for incubation and rearing of juveniles, has a complete water treatment unit, including mechanical and biological purification, water disinfection, aeration, and temperature control, is suitable for installation and use in any premises, uses a minimal amount of water, is portable, all connections are detachable, and is easy to disassemble and assemble.

The installation is shown in the drawing (figure). It consists of four tanks for incubation and rearing of fish with a volume of 60 liters (1), each of the tanks contains a mesh frame (2) for incubating eggs, an aerator (4) and a drain in the form of a knee with a removable "lantern" (3) - a plugged pipe with a mesh of a smaller mesh size than the fish being grown, water from the tanks flows by gravity into a drain line with a diameter of 50 mm (5), through the line into a settling tank (6) with a volume of 120 liters, from the settling tank through two drains (7), allowing you to control the water level due to the angle of inclination, water is supplied through two connecting pipes with a diameter of 25 mm (8) to a biological filter (9) with a volume of 120 liters, filled with a load for biological filters with a surface area of 800 ^m2 / ^m3 (10), in the biological filter there is a pump (11) with a flow rate of 1 ^m3 /h and a heater with a power of 400 W (12), separated from the load by a mesh partition (13), an aerator (4), water is supplied by a pump through a 25 mm diameter pipe (14) to a UV sterilizer (15), after disinfection, water is supplied through a 25 mm diameter pipe to a distribution block (16) with taps for controlling the water supply and through 25 mm diameter pipes (17) to each container, also on the table top (18) there is a compressor (19) with distribution to aerators in all containers and a biofilter.

The proposed device allows for the incubation of eggs and the rearing of juvenile African catfish to seed stock.

Claims (1)

A device for incubating eggs and rearing juvenile African catfish, comprising four tanks (1) with a volume of 60 liters and a drain line (5) with a diameter of 50 mm located along the water flow, a settling tank (6) with a volume of 120 liters, a biological filter (9) with a volume of 120 liters filled with a load (10) with a surface area of 800 ^m2 / ^m3 , a UV sterilizer (15) and a distribution unit (16) with taps for controlling the water supply to each tank, while in each of the tanks there is a mesh frame (2), a drain (3) and an aerator (4), in the settling tank (6) there are two drains (7) made with the possibility of controlling the water level due to the angle of inclination, in the biological filter (9) there are a pump (11) with a flow rate of 1 ^m3 /h and a heater (12) with a capacity of 400 separated from the load by a mesh partition (13) Tue, on the table top (18) there is a compressor (19) with wiring to aerators (4) and a biological filter (9).