SU736918A2 - Apparatus for incubation of fish spawn - Google Patents

Description

one

This invention relates to the field of fish farming.

According to the main author. St. No. 195773, there is known a device for incubating fish eggs, which contains a bath, a frame installed parallel to its end wall with a water supply pipe and a tub located above the bucket hinged to the last bucket and a restrictive plate, and an incubation insert for placing fish eggs on it.

The disadvantage of the prior art device is that the resulting wave moves the eggs to the water outlet, and the distribution of eggs on the liners becomes uneven, which leads to the waste of eggs during the incubation process.

The purpose of the invention is to maintain a uniform distribution of eggs on an incubation insert by forming oppositely directed water currents.

To achieve this goal, the device is equipped with an additional frame for a bucket fixed on it, a water supply pipe and a base for placing the incubation insert, while the additional frame with a bucket and water supply pipe are made similarly to the main one, the lower ends of both frames are hinged to the opposite ends of the base, and the drain holes made in the end walls of the bath.

The drawing shows the proposed H device, a general view.

5 The device comprises a bath 1 and the buckets 2 on the inner sides of the end walls hinged on the inside of the end walls of the bucket 2 on the frames 3 fixed each by means of a bracket 4 and a hinge 5. At the bottom

10 bath 1, the lower ends of both frames 3 are hingedly connected to the opposite ends of the base 6, which serves to accommodate the incubation insert 7 on it. The latter is made in the form of a mesh frame. At the upper ends of each frame 3, the limiting plates 8 with adjusting screws 9 are fixed. Above the buckets 2 water supply nozzles 10 are mounted to supply water to the buckets 2. In the lower part of the bath 1, drain holes II are made in its end walls, covered with protective nets 12 from the inside.

The device works as follows.

25 Apo water to water supplying nozzle 10 enters bucket 2 and fills and overturns it. As a result of the emerging wave, the goat 2, together with the frame 3, is moved away from the side wall of the bath 1, leading to displacement of the base 6 with the liner 7 in the opposite direction, while the bucket 2 and the frame 3 on the opposite side are also set in motion. After passing over the caviar wave, the base 6 with the liner 7 is lowered, and the caviar is already in a suspended state is exposed to the waves and is mixed. Then water B enters the water supply system, its branch pipe 10, and the process is repeated in the same way, only mixing of the bucket 2 and the base 6 with the insert 7 is carried out from the opposite side. The processes alternate with the same periodicity; in this case, the repetition of the cycles of wave formations and water exchange can be regulated in different variants.

Uniform distribution of caviar contributes to a high yield of resilient fish larvae.

Claims (1)

Invention Formula A device for the incubation of fish eggs by author. St. No. 195773, characterized in that, in order to maintain a uniform distribution of caviar on the incubation insert by forming oppositely directed currents of water, it is equipped with an additional frame with a fixed the bucket, the water inlet pipe and the base for placing the incubation insert, while the additional frame with the ladle and the water inlet pipe are made similarly to the main one, the lower the ends of both frames are pivotally connected to opposite ends of the base, and the drain holes are made in the end walls of the bath.