A kind of oxygenation device for fish fry breeding

Abstract

The utility model provides an oxygenation device for fry culture, including a nano aerator, an oxygenation tank, a submersible pump and a liquid oxygen tank, wherein the oxygenation tank is connected to the culture tank through an inlet pipe and an outlet pipe, the nano aerator and the submersible pump are arranged in the oxygenation tank, the submersible pump is connected to the nano aerator through a pipeline, the middle of the nano aerator is connected to the liquid oxygen tank, a through diversion channel is provided at the axial position of the nano aerator, the diversion channel includes an inlet end and an outlet end, the inlet end is connected to the submersible pump, a plurality of guide grooves are provided on the inner wall of the diversion channel, an air inlet is provided in the middle of the nano aerator, and the air inlet is connected to the liquid oxygen tank through a pipeline. The utility model increases the dissolved oxygen in the culture water body by forming nano-level oxygen bubbles with the nano aerator, increases the residence time of dissolved oxygen in the fry culture pool, thereby reducing the use of pure oxygen and reducing the culture cost.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture equipment, in particular to an oxygenation device used for fry culture. Background Art

[0002] At present, the main method on the market is to arrange aeration pipes in the aquaculture pond, and use a blower to dissolve air into the aquaculture water through the aeration pipes, thereby increasing the dissolved oxygen content of the aquaculture water; or use a high-pressure pure oxygen tank to dissolve pure oxygen into the aquaculture water through the aeration pipes to increase the dissolved oxygen content in the aquaculture water. The aperture of the aeration pipe is generally at the micron level, and the residence time of the micron bubbles generated by it in the aquaculture water is shorter than that of the nano bubbles in the aquaculture water, resulting in relatively low efficiency and relatively high aquaculture costs. At the same time, since the aeration pipe is directly installed in the aquaculture water, the dissolved oxygen near the aeration pipe is relatively high, and the dissolved oxygen in other areas is relatively low, resulting in uneven distribution of dissolved oxygen in the aquaculture water. Summary of the invention

[0003] In view of the shortcomings of the prior art, the utility model provides an oxygenation device for fry farming, which can form nano-scale oxygen bubbles to form high-concentration oxygenated water, and use the supplementary oxygenated water to enter the fry farming pond, thereby achieving the purpose of regulating the dissolved oxygen concentration of the farming water.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An oxygenation device for fry culture comprises a nano aerator, an oxygenation tank, a submersible pump and a liquid oxygen tank. The oxygenation tank is connected to a culture tank through an inlet pipe and an outlet pipe. The nano aerator and the submersible pump are arranged in the oxygenation tank. The submersible pump is arranged at the bottom of the oxygenation tank. The submersible pump is connected to the nano aerator through a pipeline. The middle of the nano aerator is connected to the liquid oxygen tank. The nano aerator is a tubular structure. A through guide channel is provided at the axial position of the nano aerator. The guide channel comprises an inlet end and an outlet end. The inlet end is connected to the submersible pump. A plurality of guide grooves are provided on the inner wall of the guide channel. An air inlet is provided in the middle of the nano aerator. The air inlet is connected to the guide channel and is connected to the liquid oxygen tank through a pipeline.

[0006] Furthermore, the nano aerator is made of a metal material that is resistant to high pressure and corrosion.

[0007] Furthermore, the diameter of the water outlet is greater than the diameter of the water inlet, and the diversion channel has a trumpet-shaped structure.

[0008] Furthermore, the guide groove has a spiral structure.

[0009] Furthermore, a raised reinforcing rib structure is provided on the outer wall in the middle of the nano aerator.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] The utility model increases the dissolved oxygen in the aquaculture water body by forming nanometer-level oxygen bubbles by using the nano aerator, increases the residence time of dissolved oxygen in the fry aquaculture pond, thereby reducing the use of pure oxygen and reducing the aquaculture cost; at the same time, the nano aerator does not need to be placed in the aquaculture water body, and the fry in the aquaculture water body will not be frightened due to the strong water turbulence caused by aeration, or pollutants such as feces in the aquaculture water body cannot be settled and discharged in time due to the water turbulence. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the oxygenation device for fry culture according to the utility model;

[0013] Figure 2 For attachment Figure 1 Schematic diagram of the structure of the nano aerator shown. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] like Figure 1 , Figure 2 As shown, an oxygenation device for fry culture includes a nano aerator 1, an oxygenation tank 2, a submersible pump 3 and a liquid oxygen tank 4. The oxygenation tank 2 is used to carry a culture water body that needs to be oxygenated. The oxygenation tank 2 is connected to the culture pool 5 through an inlet pipe 21 and an outlet pipe 22. The inlet pipe 21 and the outlet pipe 22 are both provided with a pump body or a valve and other components. The water in the culture pool 5 can enter the oxygenation tank 2 through the inlet pipe 21, and the oxygenated water flows into the culture pool 5 through the outlet pipe 22; the nano aerator 1 and the submersible pump 3 are arranged in the oxygenation tank 2. The oxygenation tank 2 is used to increase the oxygen content of the water body, wherein the submersible pump 3 is arranged at the bottom of the oxygenation tank 2, and the submersible pump 3 is connected to the nano aerator 1 through a pipeline. The submersible pump 3 is used to form a high-pressure state of the water body in the oxygenation tank 2 and transport it to the nano aerator 1. The middle part of the nano aerator 1 is connected to the liquid oxygen tank 4. The nano aerator 1 is used to convert pure oxygen into nano-level bubbles and dissolve them in the aquaculture water body, thereby increasing the dissolved oxygen in the aquaculture water body. The oxygenated water body is discharged into the aquaculture pool 5 through the outlet pipe 22, thereby maintaining the dissolved oxygen in the aquaculture pool 5.

[0016] The nano aerator 1 is a tubular structure. The nano aerator 1 is made of a metal material that is resistant to high pressure and corrosion, and preferably made of stainless steel. A through diversion channel 11 is opened at the axial position of the nano aerator 1. The diversion channel 11 is used for water to pass through. The diversion channel 11 includes an inlet end 12 and an outlet end 13. The inlet end 12 is connected to the submersible pump 3, so that the water in the aeration tank 2 can enter the diversion channel 11 in a high-pressure form. Further, the diameter of the outlet end 13 is larger than the diameter of the inlet end 12, so that the diversion channel 11 has a trumpet-shaped structure. The trumpet-shaped structure is conducive to the full mixing of water and gas, and the water at the outlet end 13 is directly discharged into the aeration tank; the water in the aeration tank is discharged into the breeding pond through the inlet pipe 21 and the corresponding control valve; A plurality of guide grooves 14 are provided on the inner wall of the guide channel 11, and the guide grooves 14 are in a spiral structure. The spiral guide grooves 14 easily cause bubbles to be generated in the water body during the movement; an air inlet 16 is provided in the middle of the nano aerator 1, and the air inlet 16 is connected to the guide channel 11 through a pipeline. The air inlet 16 is connected to the liquid oxygen tank 4 through a pipeline. The liquid oxygen tank 4 is a high-pressure tank body, which is used to introduce oxygen to mix with the water body in the guide channel 11. Since the introduced oxygen is introduced in the form of high-pressure gas, a high-pressure vortex will be formed near the position of the air inlet 16 in the guide channel 11. In order to increase the strength of the nano aerator 1, a raised reinforcing rib 15 structure is provided on the outer wall of the middle part of the nano aerator 1. The reinforcing rib 15 can effectively increase the strength of the nano aerator 1 and ensure safety in use.

[0017] The operating principle of the utility model is as follows:

[0018] The water in the aquaculture pool 5 can enter the aeration pool 2 through the water inlet pipe 21. The aquaculture water in the aeration pool 2 enters the diversion channel 11 from the water inlet end 12 through the submersible pump 3, and forms a spirally advancing liquid flow through the spiral guide groove 14. The liquid flow reaches the middle of the nano aerator 1 and forms a high-pressure vortex near the air inlet 16, so that the gaseous pure oxygen provided by the liquid oxygen tank 4 is brought into the diversion channel 11 through the air inlet 16, and is fully mixed with the spirally advancing liquid flow, cut into nano-scale oxygen bubbles in the high-pressure mixing area, and fully dissolved in the aquaculture water, so that the aquaculture water becomes high-oxygen water. The oxygenated water is discharged into the aquaculture pool 5 through the outlet pipe 22, so as to maintain the dissolved oxygen in the aquaculture pool 5. In the utility model, the instantaneous dissolved oxygen content of the water body passing through the nano aerator 1 is as high as 40-50 mg / L. At the same time, the aquaculture water body is oxygenated by supplementing high-oxygen water, which will not cause the aquaculture water body to have adverse effects caused by violent or rolling, thereby improving the success rate of aquaculture.

[0019] The utility model provides a high-pressure air inlet and a spiral guide groove on the nano aerator, so that external pure oxygen is brought into the nano aerator, and fully mixed with the spirally advancing liquid flow, and is cut into nano-scale oxygen bubbles in the high-pressure mixing area, and fully dissolved in the aquaculture water, so that the aquaculture water is changed into high-oxygen water, thereby increasing the dissolved oxygen in the aquaculture water body, increasing the residence time of the dissolved oxygen in the fry aquaculture pond, thereby reducing the use of pure oxygen and reducing the aquaculture cost; at the same time, the nano aerator does not need to be placed in the aquaculture water body, and the strong water body turbulence caused by aeration will not cause the fry in the aquaculture water body to be frightened, or the pollutants such as feces in the aquaculture water body cannot be settled and discharged in time due to the water body turbulence.

[0020] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An oxygenation device for fish fry culture, comprising a nano aerator, an oxygenation tank, a submersible pump and a liquid oxygen tank, characterized in that: The aeration tank is connected to the breeding tank through an inlet pipe and an outlet pipe, the nano aerator and the submersible pump are arranged in the aeration tank, the submersible pump is arranged at the bottom of the aeration tank, the submersible pump is connected to the nano aerator through a pipeline, the middle of the nano aerator is connected to the liquid oxygen tank, the nano aerator is a tubular structure, a through guide channel is opened at the axial position of the nano aerator, the guide channel includes an inlet end and an outlet end, the water inlet end is connected to the submersible pump, a plurality of guide grooves are opened on the inner wall of the guide channel, an air inlet is opened in the middle of the nano aerator, the air inlet is connected to the guide channel, and the air inlet is connected to the liquid oxygen tank through a pipeline.

2. The oxygenation device for fish fry culture according to claim 1, characterized in that: The nano aerator is made of high pressure resistant and corrosion resistant metal material.

3. The oxygenation device for fish fry culture according to claim 1, characterized in that: The diameter of the water outlet is greater than the diameter of the water inlet, and the diversion channel is a trumpet-shaped structure.

4. The oxygenation device for fish fry culture according to claim 1, characterized in that: The guide groove is in a spiral structure.

5. The oxygenation device for fry culture according to claim 1, characterized in that: A raised reinforcing rib structure is arranged on the outer wall in the middle of the nano aerator.

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