SU195773A1 - APPARATUS FOR INCUBATION OF CAVIAR FISH - Google Patents

Description

Known devices for iikubashi; Fish eggs are BaHFiy with running water, in which is placed a device for creating wave motion of water in the bath. The latter is a W, IR with a mesh bottom, under which there is a frame with plates for creating a wolf movement of water, connected by a galti and a lever with a bucket, equipped with a counterweight and used to drive the frame in reciprocating movement.

The proposed aa device allows to simplify the design and combine the processes of spawning, incubation of eggs and hatching of larvae, as well as changing the size of the wave by changing the volume of water in the: bucket.

For this, the bucket is made along the width of the bath and is sariirno mounted inside it on a removable frame mounted at the end wall of the bath from the water supply side.

On the frame reinforced restrictive plate with an adjusting screw that interacts with the bucket. It is advisable to provide the apparatus with an insert for placing the eggs during spawning, which is an artificial substrate nest, made in the form of a frame, covered with a nylon layer.

trays - upper 2 and lower 5 (tray 3

the stopper 4) is closed, and the other (inside the bath) is equipped with a transfer bucket 5. It has a trapezoid shape in cross section and is connected by ASSISTING axes 6 to a metal frame 7, in which it rotates freely. Ki bucket bottom attached counterweight 8 (metal strip). The top of frame 7 is fixed to the strap 9, on which there is a bolt W for adjusting the volume of water in the bucket. The pins are welded to the sidewalls of the frame.

Okoba 13, mounted on the walls of the bath. The bucket has a sloping side facing the wall of the bath.

The substrates for spawning fish are liners - nests 14, which are terry rugs made of nylon plaster, stretched on metal frames made of wire. At the bottom of the bath is placed on two sockets terry side up. When planting manufacturers bucket out of it

removed. During the maintenance period, water is continuously supplied from the pipeline directly to the bath. At this time, the bottom tray 3 is closed with a stopper 4, and water is drained from the apparatus through

The producers are spawned and the eggs on the substrate are left in the apparatus for further incubation. Then install the bucket 5 and open the plug 4. Incubation of the eggs takes place while maintaining the lower water level. In the non-incubation period, the water from the water supply system enters the bucket 5. When a certain volume of water enters the bucket, it turns over and all the water is poured out simultaneously. The empty ladle of the tank is returned to its original position by the action of the counterweight, followed by another filling of it with water. Water poured out of the bucket creates a wave that moves in the bath from one wall to another until its complete attenuation. The hairy nest surface with attached eggs from a wave rotates slightly, which improves water exchange and eliminates silting up of the eggs. The magnitude of the wave is adjusted by changing the volume of water at the extremity. To increase the volume and, consequently, increase the wave, the bolt 10 is unscrewed, while the bucket deviates more strongly towards the rear wall. In this case, a larger volume of water is required to turn the bucket over. The bolt is screwed in to reduce the wave. Incubation of the eggs in the apparatus is carried out until the end of the hatching of the larvae. Broken larvae come out of the bath together

With water through the bottom, the tray 3 directly b in the water reservoir or in a special container.

Subject and sbreet bN and -.

1. A device for incubating fish eggs, including a bath with running water and a bottom for dL. creating a wave motion of the water in the bath containing a bucket with an effective weight, characterized in that, in order to simplify the construction and the possibility of the spawning process, incubating the caviar and hatching of larvae, the ladle is made wider than the bath and is hinged inside it on a removable frame mounted UGG end wall of the bath from the water supply side.

2. The apparatus of claim 1, characterized in that, in order to change the magnitude of the wave by changing the volume of water in the bucket, a restrictive bar with an adjusting screw interacting with the bucket is fixed on the frame.

3. Apparatus but p. 1, characterized in that it is provided with an insert for placing the spawn during spawning, which is an artificial nest-substrate, made in the form of a frame covered with a nylon splitting.

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