Fry hatching device

Abstract

The utility model provides a fry hatching device which comprises an aeration temperature control water pool, a roe pool, a fry pool and a plurality of hatching cabins, the bottom of each hatching cabin is connected with the aeration temperature control water pool through a water supply pipeline and connected with the roe pool through a fallopian pipeline, and the side wall of the upper portion of each hatching cabin is provided with an opening and connected with the fry pool through a fry conveying pipeline. The water supply pipeline, the fallopian tube pipeline, the fry conveying pipeline and the backflow water pipeline are all provided with control valves, a filter screen plate is arranged in the hatching cabin and supported on an annular boss on the inner wall of the hatching cabin, the structure is compact, and water flow control and roe filtering are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of fish fry hatching technology, and in particular to a fish fry hatching device. Background Technology

[0002] Fish fry hatching is a crucial step in aquaculture, and the structure and layout of the hatching device directly affect hatching efficiency and fry survival rate. Existing fish fry hatching devices mostly employ traditional tank structures, involving manual placement of fish eggs and hatching in still or weakly flowing water. However, in practice, fish eggs are prone to accumulating, sinking, and decaying, making it difficult to maintain stable water quality. Furthermore, the transfer of fry after hatching largely relies on manual operation, which is cumbersome and labor-intensive.

[0003] Some improved hatching systems have attempted to incorporate water circulation and temperature control to enhance the controllability of hatching conditions. For example, they improve the hatching environment by setting up constant-temperature pools, inlet and outlet water control pipes, and auxiliary aeration equipment. However, in existing structures, the water system layout of most hatching chambers is complex, components are difficult to disassemble and assemble, the filtration structure is not reasonably designed, fish eggs are easily lost with the water flow, and fish eggs and water channels are often mixed, resulting in large water flow disturbances, making it difficult to achieve a stable and efficient fish fry hatching process.

[0004] Therefore, there is an urgent need for a fish fry hatching device with a reasonable structure, clear water and egg supply paths, reliable filtration, and convenient fish fry output and circulation control, in order to meet the demand for improved fish fry hatching efficiency and quality in modern aquaculture. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a fish fry incubation device with a simple structure, clear pipeline distribution, stable filtration structure, suitable for multi-chamber parallel arrangement, and convenient water flow circulation control and fish egg diversion and transportation. It can realize the orderly delivery of fish eggs, automatic diversion and output of fish fry, and constant temperature control and recycling of incubation water.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a fish fry hatching device, including an aerated and temperature-controlled water tank, a fish egg tank, a fish fry tank, and multiple hatching chambers. The bottom of the hatching chamber is connected to the aerated and temperature-controlled water tank through a water supply pipe, and is also connected to the fish egg tank through an egg transport pipe. The upper side wall of the hatching chamber is provided with an opening, which is connected to the fish fry tank through a fry transport pipe, and is also connected to the aerated and temperature-controlled water tank through a return water pipe. The water supply pipe, egg transport pipe, fry transport pipe, and return water pipe are all provided with control valves to control the opening and closing state of the fluid in each passage, thereby realizing the connection and switching between the hatching chamber and each functional unit.

[0007] Furthermore, a vertically installed bottom main pipe is inserted into the bottom of the incubation chamber. The bottom main pipe passes through the bottom of the incubation chamber and is sealed to it. A control valve is installed on the bottom main pipe. Below the control valve, a water supply pipe connected to the aeration and temperature control water tank and an egg transport pipe connected to the fish egg tank are respectively connected through a tee fitting, so as to realize the independent arrangement of the water supply path and the egg transport path.

[0008] Furthermore, the multiple incubation chambers are arranged side by side in a horizontal distribution, and each incubation chamber has the same structure, which is a one-piece cylindrical structure, which facilitates modular assembly and unified maintenance; the interior of each incubation chamber is equipped with a filter screen to block particulate matter, and the filter screen is located below the opening on the upper side wall, and the installation position is stable and reliable.

[0009] Furthermore, the outer diameter of the filter plate matches the inner diameter of the incubation chamber, covering the entire cross-section; the inner wall of the incubation chamber has a ring-shaped protrusion near the lower part of the side wall opening to support the filter plate, and the filter plate is placed flat above the ring-shaped protrusion, and its positioning in the chamber is achieved by structural limiting.

[0010] Furthermore, the aeration and temperature control pool is equipped with a heater and an aeration device, wherein the heater is used to regulate the water temperature and the aeration device is used to increase the dissolved oxygen in the water. The water temperature in the aeration and temperature control pool is controlled within a range of 18°C ​​to 25°C to meet the constant temperature environment required for fish egg hatching.

[0011] Furthermore, the incubation chamber is set at a height higher than the top of the fry pond, and the incubation chamber and the fry pond are connected by a fry transport pipe to form a certain height difference, which facilitates the subsequent collection and transfer of fry into the fry pond along the fry transport pipe.

[0012] The beneficial effects of this utility model are:

[0013] This utility model features a vertically installed main pipe inserted into the bottom of the incubation chamber, with a water supply pipe and an egg transport pipe connected below the main pipe. A water outlet is provided on the upper side wall of the incubation chamber, connecting a fry transport pipe and a return water pipe. All pipes are equipped with control valves, thus achieving independent functional pathways for fish egg input, water supply, fry output, and water return. The structure is clear and the connections are orderly.

[0014] This utility model adopts multiple incubation chambers arranged in parallel. Each incubation chamber is a one-piece cylindrical structure with a filter screen inside. The filter screen is set below the opening on the side wall of the incubation chamber and is limited and supported by an annular protrusion on the inner wall. The structure is stable and easy to deploy in batches and maintain uniformly.

[0015] In this invention, the aeration and temperature control water tank is equipped with a heater and an aeration device, which can control the temperature and aerate the water supply to ensure that the water entering the hatching chamber is within the set range; the hatching chamber is set at a height higher than the top of the fry pond, which is conducive to the natural transfer of fry to the fry pond for subsequent management. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the fish fry hatching device of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the incubation chamber in the fish fry incubation device of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of a single incubation chamber in the fish fry incubation device of this utility model;

[0019] In the diagram: 1- Hatching chamber; 11- Filter screen; 12- Bottom main pipe; 13- Opening; 2- Aeration and temperature control water tank; 3- Fish egg tank; 4- Fish fry tank. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0021] like Figure 1 As shown, this utility model discloses a fish fry hatching device, comprising multiple hatching chambers 1, and connected to them an aeration and temperature-controlled water tank 2, a fish egg tank 3, and a fish fry tank 4. The bottom of each hatching chamber 1 is connected to the aeration and temperature-controlled water tank 2 via a water supply pipe to provide a constant-temperature water body; simultaneously, the bottom of the hatching chamber 1 is also connected to the fish egg tank 3 via an egg-transfer pipe to introduce fish eggs. An opening 13 is provided on the upper side wall of the hatching chamber 1, which is connected to the fish fry tank 4 via a fry-transfer pipe to guide the hatched fish fry out; this opening 13 is also connected to the aeration and temperature-controlled water tank 2 via a return water pipe for water return. Control valves are provided on the aforementioned water supply pipe, egg-transfer pipe, fry-transfer pipe, and return water pipe to control the fluid flow in each path.

[0022] like Figure 2As shown, multiple incubation chambers 1 are arranged in a parallel configuration. Each incubation chamber 1 is a monolithically formed cylindrical structure, arranged within the same supporting frame. A vertically arranged main bottom pipe 12 is inserted into the bottom of each incubation chamber 1, extending into and sealingly connecting to the bottom of the chamber. A control valve is located below the main bottom pipe 12, and a tee structure connects it to a water supply pipe and an egg-laying pipe, respectively. An opening 13 is provided on the upper part of the side wall of each incubation chamber 1, and a short pipe is connected to the opening 13. A control valve is installed on the short pipe, and a diversion connector leads out a seedling supply pipe and a return water pipe, respectively.

[0023] like Figure 3 As shown, a filter screen 11 is provided inside the hatching chamber 1. The filter screen 11 is horizontally positioned below the opening 13 to isolate impurities or unhatched fish eggs in the rising water flow. A ring-shaped protrusion is provided on the inner wall of the hatching chamber 1 near the opening 13 below. The outer diameter of the filter screen 11 matches the inner diameter of the hatching chamber 1, allowing it to be stably placed on the ring-shaped protrusion for positioning and support.

[0024] Furthermore, the aeration and temperature control tank 2 is equipped with a heater and an aeration device to regulate the temperature and oxygen content of the circulating water. Through control of the water circulation path, water flows from the aeration and temperature control tank 2 into the hatching chamber 1, and then returns via the fry transport channel or the return channel, achieving recycling. The hatching chamber 1 has a height advantage over the fry pond 4, allowing the fry to easily enter the fry pond.

[0025] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A fish fry hatching device, comprising an aerated and temperature-controlled water tank, a fish egg tank, a fish fry tank, and multiple hatching chambers, characterized in that: The bottom of the incubation chamber is connected to the aeration and temperature control pool via a water supply pipe, and to the fish egg pool via an egg transport pipe; the upper side wall of the incubation chamber has an opening that connects to the fry pool via a fry transport pipe, and to the aeration and temperature control pool via a return water pipe; control valves are provided on the water supply pipe, egg transport pipe, fry transport pipe, and return water pipe.

2. The fish fry hatching device according to claim 1, characterized in that: The bottom of the incubation chamber is connected to a vertically installed main bottom pipe. The main bottom pipe is equipped with a control valve. Below the control valve, there is a water supply pipe connected to the aeration and temperature control water tank and an egg transport pipe connected to the fish egg tank.

3. The fish fry hatching device according to claim 1, characterized in that: The multiple incubation chambers are arranged side by side, and each incubation chamber has the same structure, which is a one-piece cylindrical structure. The incubation chamber is equipped with a filter screen, which is located below the opening on the upper side wall.

4. The fish fry hatching device according to claim 3, characterized in that: The outer diameter of the filter screen plate matches the inner diameter of the incubation chamber. The inner wall of the incubation chamber is provided with a ring of annular protrusions near the lower part of the side wall opening, and the filter screen plate is disposed on the annular protrusions.

5. A fish fry hatching device according to claim 1, characterized in that: The aeration and temperature control water tank is equipped with a heater and an aeration device, and the water temperature is controlled between 18°C ​​and 25°C.

6. The fish fry hatching device according to claim 1, characterized in that: The incubation chamber is set at a height higher than the top of the fish fry pond.

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