Keep-alive incubation barrel of fish demersal eggs

Abstract

The invention discloses a keep-alive incubation barrel of fish demersal eggs, comprising a barrel body, wherein the top part of the barrel body is fixedly provided with a convex enclosure; a water feeding pipe system is installed at the bottom of the barrel body and the water feeding pipe system passes through and stretches into the barrel body; a clapboard is arranged in a gap above the bottom of the barrel body; through holes are uniformly distributed on the clapboard; the water feeding pipe system is provided with a water feeding pipe opening, the water feeding pipe opening passes through the bottom of the barrel body, and an opening is arranged closely to the center of the gap between the bottom of the barrel body and the clapboard; the water feeding pipe system is provided with a flush pipe opening and the flush pipe opening is arranged above the clapboard and rotates in the same direction; an inflating component is further arranged in the gap between the bottom of the barrel body and the clapboard; and the enclosure is further provided with a water overflowing pipe. The keep-alive incubation barrel of the fish demersal eggs, provided by the invention, has the advantages of novel structure, uniform incubation density, high utilization rate of water, high oxygen dissolving rate of the incubation water and the like.

Description

technical field [0001] The invention relates to an artificial hatching device, in particular to a hatching bucket for keeping fish sinking eggs alive. Background technique [0002] The hatching of fish eggs in my country mainly adopts the method of loop, hatching bucket and hatching tank developed according to the characteristics of the four major fish eggs. Put the fish eggs in the hatching bucket, the bottom of the bucket has a water inlet pipe, and the upper part of the hatching bucket has a water outlet. This approach has proven effective in hatching many fish. However, for some sinking and sticky fish eggs, the above method will lead to the following two results: (1) the hatching rate is low; (2) the utilization rate of the incubator decreases. In addition, some methods of hatching fish eggs by using cement pools and water buckets with aerators cannot solve the problem of hypoxia and death during egg hatching caused by the accumulation of thin egg membrane fish eggs, ...

AI Technical Summary

Problems solved by technology

However, hatching some sinking and viscous fish eggs using the above method will lead to the following two results: (1) low hatching rate; (2) decreased utilization rate of the incubator

In addition, some methods of hatching fish eggs using cement pools and buckets equipped with aerators cannot solve the problem of anoxic death of fish eggs caused by the accumulation of fish eggs in thin egg membranes, so they cannot adapt to the growth of fish eggs in thin egg membranes. incubation

Since the traditional incubator uses direct water intake, in order to make full use of the effective volume of the incubator, it is often only possible to increase the water intake through the water inlet pipe at the bottom of the incubator. Since the diameter of the water inlet pipe is fixed and narrow, increasing the water volume will undoubtedly lead to The increase of the flow velocity will increase the impact of the water flow on the fish eggs. For fish eggs with thin egg membranes, the egg membrane will rupture due to excessive water flow velocity.

If reducing the water flow rate is used to solve the problem of excessive water flow rate, although it can effectively prevent the rupture of the thin fish egg membrane, the utilization rate of the effective volume of the hatching bucket will be reduced due to the small water flow rate, which may cause the following two situations: (1) Press The number of hatching fish eggs originally designed in the hatching bucket will cause the accumulation of fish eggs and the death of fish eggs if the eggs are hatched with thin egg membranes; (2) To ensure the survival of hatching thin fish eggs, it is necessary to reduce the amount of fish eggs input

For example, the Chinese utility model patent thin-egg membrane fish egg hatching bucket, patent number 02271529.0, which can not solve the problem of egg concentration

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