Rotifer cultivation pond

Abstract

The utility model discloses a rotifer breeding pond which comprises a breeding pond body, the bottom of the breeding pond body is provided with a sedimentation part, the height of the sedimentation part is reduced from the periphery of the breeding pond body to the center of the breeding pond body, the bottom end of the sedimentation part is provided with a sewage draining exit, and the sewage draining exit is communicated with an external sewage draining device; the vortex generating device is arranged at the edge of the bottom of the cultivation pool and used for making vortexes for water flow in the cultivation pool. The sedimentation part inclining towards the center is arranged at the bottom of the breeding pond, the vortex generating device is arranged, in the rotifer breeding process, vortexes are generated through the vortex generating device, and under the guiding effect of the sedimentation part, waste such as residual feed and excrement is guided to the sewage draining exit, so that continuous flowing of water flow is kept, and dead corners of water are avoided; therefore, the distribution efficiency of dissolved oxygen and the removal efficiency of waste are improved, and the quality level of breeding is further improved.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology and equipment, and specifically to a rotifer breeding pond. Background Technology

[0002] The rapid development of my country's aquaculture industry has led to an increasingly larger share of my country's aquatic product output in the world. Rotifers are nutrient-rich planktonic organisms with advantages such as small size, rapid reproduction, and low cultivation costs. They are widely distributed and contain most of the amino acids and unsaturated fatty acids required by aquatic animals, making them an ideal food source for larval stages. Compared to artificial feed, rotifers, as live food, naturally induce feeding in aquatic animals, increasing their feeding rate. Furthermore, they cause less pollution to the aquatic environment, reducing the difficulty of aquaculture management. With the continuous increase in aquaculture production, the demand for rotifers is also constantly rising. However, existing rotifer cultivation technologies face many problems in large-scale aquaculture, including complex operation, low cultivation efficiency, frequent disease outbreaks, and difficulties in water quality management, failing to meet the needs of modern aquaculture and thus limiting the development of the aquaculture industry. Therefore, designing a rotifer cultivation device that can achieve efficient, large-scale, high-density, and semi-automated operation has become a pressing technical problem to be solved in the industry. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the shortcomings of the existing technology, this utility model provides a rotifer breeding pond that satisfies multiple light output functions, has a compact structure, small size, and low cost.

[0004] Technical solution: A rotifer rearing tank, comprising:

[0005] The cultivation tank has a settling section at the bottom that decreases in height from the periphery of the cultivation tank toward the center, and a drain outlet at the bottom end of the settling section that is connected to an external sewage discharge device.

[0006] A gas output device used to output gas;

[0007] An inflatable stone, wherein the inflatable stone is connected to the gas output device via an inflatable hose;

[0008] A vortex generator is installed at the bottom edge of the cultivation tank to create vortices in the water flow within the cultivation tank. The vortex generator is connected to the gas output device.

[0009] Furthermore, the vortex generating device includes an output pipe arranged parallel to the side wall of the cultivation pool, and a nanotube is provided at the end of the output pipe.

[0010] Furthermore, the distance between the bottom end of the inflatable stone and the bottom surface of the settling part is greater than or equal to 30cm.

[0011] Furthermore, the nanotube is configured such that its axial direction is parallel to the sidewall of the settling section.

[0012] Furthermore, the number of nanotubes is four, arranged symmetrically around the center of the cultivation pool at the bottom edge of the cultivation pool.

[0013] Furthermore, the output pipe and the gas output device are connected by an inflation main pipe, which is at least partially disposed along the top of the side wall of the cultivation tank, and the inflation stone is connected to the inflation main pipe through the inflation hose.

[0014] Furthermore, the nanotube is provided with an output end at its end, which is fixedly connected to the side wall of the settling section.

[0015] Furthermore, the inclination angle of the settling section is α, where 3°≤α≤15°.

[0016] Beneficial effects: The rotifer breeding pond of this utility model has a settling section at the bottom that is inclined towards the center and a vortex generating device. During the rotifer breeding process, the vortex generating device generates vortices, and under the guidance of the settling section, waste such as uneaten feed and feces are directed to the sewage outlet, thereby maintaining continuous water flow, avoiding dead zones in the water body, improving the distribution of dissolved oxygen and the efficiency of waste removal, and thus improving the quality of breeding. Attached Figure Description

[0017] Appendix Figure 1 This is a cross-sectional structural schematic diagram of one embodiment of the rotifer cultivation pond of this utility model;

[0018] Appendix Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the rotifer rearing tank. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] It should be noted that the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0021] See Figures 1 to 2 An embodiment of the rotifer rearing pond of this utility model is shown, comprising: a rearing pond 1 and a vortex generating device. The bottom of the rearing pond 1 is provided with a settling section 2 that decreases in height from the periphery of the rearing pond 1 towards the center. A drain outlet 3 is provided at the bottom end of the settling section 2, and the drain outlet 3 is connected to an external sewage discharge device. The vortex generating device is located at the bottom edge of the rearing pond 1 to create vortices in the water flow within the rearing pond 1. The vortex generating device includes: an output pipe arranged parallel to the side wall of the rearing pond, with a nanotube 41 at its end. The nanotube 41 also has an output end 42 at its end, which is fixedly connected to the side wall of the settling section 1, thereby precisely fixing the nanotube and ensuring parallelism.

[0022] By setting a settling section 2 that slopes towards the center at the bottom of the rearing pond 1 and installing a vortex generator, vortices are generated during rotifer rearing. Under the guidance of the settling section 2, waste such as uneaten feed and feces are directed to the drain outlet 3, thereby maintaining continuous water flow, avoiding dead zones in the water body, improving the distribution of dissolved oxygen and the efficiency of waste removal, and thus improving the quality of rearing.

[0023] Specifically, the settling section 2 at the bottom of the cultivation tank 1 can be conical or have four inclined surfaces facing the drain outlet 3. The gas output device 4 can be a fluid device such as a blower, air pump, or water pump. In this embodiment, the gas output device 4 is an air pump.

[0024] The number of nanotubes 41 is four, arranged symmetrically around the center of the axis of the cultivation tank 1 at the bottom edge of the cultivation tank 1. In some other embodiments, the number of nanotubes 41 may be one, two or three, and such structural changes still fall within the protection scope of this utility model.

[0025] Four vortex generators, located at the bottom edge of the cultivation tank 1 and near the corners of the cultivation tank 1, create vortices in the settling section 2 by blowing air clockwise or counterclockwise into the cultivation tank 1 due to the angle of the four vortex generators when in operation.

[0026] The cultivation tank 1 is also uniformly equipped with several air stones 5, which are connected to an external aeration device via air hoses 6. The air stones 5, also known as air stones or bubble stones, are used to evenly disperse gas into tiny bubbles, thereby effectively increasing the dissolved oxygen content in the water. They not only distribute air evenly to all corners of the water body but also help release carbon dioxide from the water, thus promoting the metabolism of microorganisms and enhancing their vitality. Furthermore, the bubbles generated by the air stones can also drive water flow, causing bottom debris to float to the surface for easier cleaning, while maintaining water circulation and preventing the accumulation of impurities and harmful substances. The air hoses 6 are fixed by a mounting bracket with several slots for securing the air hoses.

[0027] Because the nanotube 41 itself has multiple small pores, when the airflow generated by the gas output device 4 passes through the nanotube 41, some of it will form bubbles through the side wall of the nanotube 41, thereby generating dissolved oxygen in the water and increasing the oxygen content in the cultivation tank 1.

[0028] In some preferred embodiments, the bottom end of the aeration stone 5 is at least 30 cm away from the upper surface of the settling section 2. This allows the aeration stone 5 to agitate the water layer, ensuring uniform dissolved oxygen without interfering with the accumulation of uneaten food and feces in the lower layer.

[0029] Furthermore, the aeration stone 5 and the nanotube 9 can be connected together through the main aeration pipe 7, which is at least partially arranged along the top of the side wall of the cultivation tank, and the aeration stone 5 is connected to the main aeration pipe 7 through the aeration hose 6. The airflow output to the nanotube 41 or the aeration stone 5 is controlled by the diversion valve, thereby forming precise control over dissolved oxygen and vortex generation in the cultivation tank 1.

[0030] Preferably, the inclination angle of the settling section 2 is α, where 3° ≤ α ≤ 15°. In this embodiment, α is 5°. Setting α between 3° and 15° is the optimal value derived from the settling flow rate of residual feed and feces.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A rotifer rearing pond, characterized in that, include: The cultivation tank has a settling section at the bottom that decreases in height from the periphery of the cultivation tank toward the center, and a drain outlet at the bottom end of the settling section that is connected to an external sewage discharge device. A gas output device used to output gas; An inflatable stone, wherein the inflatable stone is connected to the gas output device via an inflatable hose; A vortex generator is installed at the bottom edge of the cultivation tank to create vortices in the water flow within the cultivation tank. The vortex generator is connected to the gas output device.

2. The rotifer rearing pond according to claim 1, characterized in that: The vortex generator includes an output pipe arranged parallel to the side wall of the cultivation pool, and a nanotube is provided at the end of the output pipe.

3. The rotifer rearing pond according to claim 1, characterized in that: The distance between the bottom of the inflatable stone and the bottom surface of the settling part is greater than or equal to 30cm.

4. The rotifer rearing pond according to claim 2, characterized in that: The nanotubes are configured such that their axial direction is parallel to the sidewall of the settling section.

5. The rotifer rearing pond according to claim 2, characterized in that: The number of nanotubes is four, and they are arranged symmetrically around the center of the axis of the culture tank at the bottom edge of the culture tank.

6. The rotifer rearing pond according to claim 2, characterized in that: The output pipe and the gas output device are connected by an inflation main pipe, which is at least partially located along the top of the side wall of the cultivation tank, and the inflation stone is connected to the inflation main pipe through the inflation hose.

7. The rotifer rearing pond according to claim 4, characterized in that: The nanotube is also provided with an output end, which is fixedly connected to the side wall of the settling part.

8. The rotifer rearing pond according to any one of claims 1-7, characterized in that: The inclination angle of the settling section is α, where 3°≤α≤15°.

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