SU1395241A1 - System for spawing and breeding fish - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to fish farming, in particular, to systems for ensuring natural spawning and production of juvenile fish. The aim of the invention is to save energy and water resources and improve the condition of the fish. To do this, in a system containing a closed annular channel 1, an annular distribution pipe 5, communicated through gate valves 7 with jet nozzles 8, and a water intake ring collector 9, it is possible to work in a closed loop: collector 9 — channel 1 — pump station 4 — pipe wire 5. The system contains pet shallow areas 3 separated from channel 1 by intermittent dams .15. Fish spawning in the system is carried out without the use of hormonal stimulation. 1 hp f-ly, 4 pcs. (L with

Description

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The invention relates to fish farming, in particular, to systems for ensuring natural spawning and obtaining juvenile fish, for example, common carp, perch, sturgeon.

The purpose of the invention is to save energy and water resources and improve the conditions for keeping fish.

The system operates in the reverse water supply mode, which allows: to save water. ECONOMY of water in its turn allows to reduce the cost of I consumed electricity. Additional volumes of water can .consumption | | vats only to compensate for losses | for evaporation and filtration. In the proposed system, the uniformity of flow velocities along the length of the channel was achieved, which favorably affects the state of the producers and the incubation of caviar obtained from them.

1 shows a system for

: spawning and breeding fish in the plan;

In figure 2 - section aa in figure 1}

Fig.Z - water intake, a section along the axis of the annular channel; figure 4 - section | bb in fig.Z.

The system for spawning and breeding fish contains a closed annular channel 1 with a horizontal one, having the form of a ring with a trapezoidal cross section and along the outer perimeter of the dam 2, which allows the water horizon 3 above the shallow areas 3, the pumping station 4, to create a circulator the flow in the canapes, including the annular distribution pipeline 5, | water supply 6, equipped with eelectric valves 7 and jet nozzles 8, contributing to the acceleration of water in the canape due to ejection, water intake ring collector 9, water intakes 10 equipped with flat hinged tips 11 and devices for creating an air-puff curtain as well as a suction pipe 12 for taking water from the intake ring collector 9. The second suction pipe 13 serves for drawing water from an external water source. The system contains a canal fishery network including concentric annular canals 14 with intermittent dams.

15, located on the outer perimeter of the channels 14, open collector

16, originating in the center of the shallow areas 3 and equipped with an aqueduct 17 for passage through the channel and a drainage structure combined with a fish catcher 18, a supply channel 19 with a partition structure 20, a discharge channel 21 with a partition structure combined with an emergency outlet and the fish catch 22 .

Water outlets 6 are equipped with jet Nozzles 8, directed in different directions of channel 1, which, when switching valves 7 and changing the position of head 11, supply and accelerate water in one or another direction, slow it down or create a mixed direction of water flow in channel 1 while opening the valves 7.

Overflow dams 15 located along the perimeter of the annular concentric channels 14 are designed to retain juvenile fish when water is discharged from shallow water areas and orient its slope into a fish collection and drainage network. The gaps in the dams are located in such a way as to ensure uniform flooding and drainage of shallow areas 3.

Pump station 4 has two suction lines 12 and 13. Suction pipe 12 is designed to take water from the water intake manifold 9, create circulating water supply in the system and maintain the required speeds in channel 1. Suction pipe 13 is designed to take water from an external water source to cover losses for filtration and evaporation. as well as for raising the water to a certain level.

The water intake 10 includes a flat hinged head mounted in the receiving chamber 23 and a device for creating an air-bubble curtain (FIG. 3, 4). The flat hinged tip consists of a shield 24 fixed to the ball 25 of the hollow semi-cylindrical frame 26, covered with an elastic screen 27 along the side surface and from the side of the bases. To the outer surface of the shield 24 symmetrically to the axis of the shaft 25 by means of hinges 28 are attached two rods 29, which in the upper part are also connected by means of hinges 28 to the rocker 30. The beam 30

rigidly mounted on the shaft 31, which by means of bearings with its ends rests on two suspensions 32 attached to the service bridge 33. The shaft 31 is connected to. drive 34. A device for creating an air-puff curtain, represented by a perforated conduit 35, is installed above the shaft 25.

The system for spawning and breeding fish works as follows.

The closed annular channel 1 through the supply channel 19, connected to an external water source with an open blocking of the cement structure 20, is filled with water. The pump station 4, with the suction pipe 13 closed and the suction pipe 12 open, takes water from the channel 1 through the water intake manifold 9 and water intakes 10. This ensures the initial movement of water. As with the suction pipe 12 and pipe 13, pump A station supplies water to the distribution pipe 5, and then through valves 7, outlets 6 and jet nozzles 8 to channel 1, which provides acceleration of the flow due to the ejector effect

To prevent fish and debris from entering the receiving chamber 23 of the water intake 10, the actuator 34 mounted on the service bridge 33 rotates the shaft 31 in a certain direction depending on the direction of flow in the closed annular canap 1. Together with the shaft 31, the rocker 30 rotates, which by means of hinges 28 rotates transmits the force to the rods 29. The rods 29, in turn, by means of the same hinges 28 transmit the force to the arms 24, mounted on the shaft 25. As a result, the shield 24 is rotated, which is carried out at which it provides pressing the edges of the channel bottom by nabegakschego stream. As a result, the cross section of the flow at the other high end of the shield 24 is compressed, the flow rates increase and the fish and garbage are removed within the upper water horizon. From the lower horizon through the elastic screen 27, the water enters first into the hollow semi-cylindrical frame 26, and then again through the screen 27 into the receptacle

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measure 23, thus passing the double filtration cycle. The air supplied by pipeline 35 from the compressor station forms an air-bubble curtain above the shield 24, which facilitates the lifting of suspensions and fish into the upper water horizons and their subsequent movement beyond the limits of the water intake, the Air-puffer curtain. also contributes to the aeration of water.

In the closed annular channel 1, manufacturers are started when it is filled with water up to the level of C (figure 2). In the first half of July, through the pumping station, the canal is periodically filled with water to the level and dumped with a barrier structure combined with an emergency spillway and a fish catcher 22 into the discharge channel 21 to the level C. At the same time, the speed of the water flow in the canal is provided by the pump station 4, thus imitating the hydrological conditions close to natural, i.e., provoking the spawning of producers. In the second half of July, the canal is filled with water to a level at a flow rate of 0.7-1.2 m / s, which ensures the formation of zones for the natural spawning of carp and, in particular, plant fish. After spawning in the process of swelling of the spawned caviar, the speed in the channel is set equal to 0.2-0.4 m / s.

When the larvae are massively expanded and transferred to external power supply, without changing the set flow rate, the channel is filled to the level VE. In this case, water is filled with shallow water areas 3 and the natural transition of all larvae to shallow water with a water level of up to 0.5 m. The fed shallow water areas are well warmed and rich in food. If it is necessary to transfer the young juveniles to the reservoir, not communicating with the system, the water level in the canal gradually decreases the dvd and the young scatters through the fish collection network to the fish catcher 18, where it is caught for transportation to other water reservoirs. During the periods of catching fry in the places of dam 15 rupture, due to the water level difference formed here, an increase in water flow rates will be observed. Young fish, having a negative reotaxis, do not follow water streams, but, having manifested an optical motor reaction, fix their position at visual landmarks - dams, and then, when the level decreases, they enter the fish collecting network and fish traps. On the surface of the overflow dams 15 during the growing season, the rapid development of benthic organisms that are food for fish is observed. Daphnia we can be located along the dams.

The capture of producers is carried out by i with the release of water through partitions; the first building combined with the ava; spillway and fish-catch; Lem. 22

I Spawning fish in the system passes without; use of hormonal stimulation by I manufacturers. The use of spawning panels, artificial nests, I plots with sandy - gravel soil: securing the necessary hydro: logical conditions contributes to successful reproduction of carp, perch; out, sturgeon. In particular, in the system it is possible to achieve natural reproduction of plant-like fish, which is not possible under the conditions of pond farms. The transfer of juveniles in optimal time without contact with the fishing gear to shallow water areas rich in natural food significantly reduces the injury and VH of young fish and provides an increase in the total yield of marketable products. electricity and water.

Claims (2)

1. A system for spawning and breeding fish, including a closed ring channel with a horizontal bottom, a pumping station, a discharge channel, flowery shallow areas located in an area outlined by annular channel, fish catchers, dams located in shallow areas, and means for creating circulation currents in the channel, including nozzles, characterized in that, in order to save energy and water resources and improve fish conditions, means for creating circulation currents contains a ring distribution pipelines and a water intake ring collector, as well as intakes in the canal, equipped with flat hinged caps and devices for creating an air-bubble curtain, nozzles are arranged in pairs in the canape in opposite directions, water intakes are connected to the water intake manifold, nozzles are connected to the distribution pipeline, and the water intake manifold and the annular distribution pipe are connected to a pumping station with the formation of a closed circulation loop. 2. The system of pop. 1, which differs from the fact that the dams are made of overflow, are located in shallow areas along concentric circles and have openings. /five 11.10 / / / - / , (: Sf :: (pus. I J6 / 7 7 // / M / / ::  // NSb X # 5 iy x v44 / x JWX qpue.2 - five Editor M.Tovtin Compiled by D.Pavlov Tehred A. Kravchuk; .it Proofreader L. Pilipenko