An oxygenation device for aquaculture

Abstract

This utility model discloses an oxygenation device for aquaculture, including an oxygenation tank, a water pump, and an aquaculture pond. The oxygenation tank has an inlet and an outlet, and a partition is installed inside the oxygenation tank to divide the interior into upper and lower oxygenation chambers. Several through-holes are formed in the partition. Water pumped into the upper oxygenation chamber flows through the through-holes, forming a water curtain that falls into the lower oxygenation chamber. At least one unidirectional fan is installed around the lower oxygenation chamber, blowing air into the chamber towards the water curtain. By pumping water into the oxygenation tank and forming a water curtain under the influence of the partition, and simultaneously blowing air onto the water curtain by the unidirectional fan, oxygen is fully contacted with the water droplets. Combined with the effect of multiple inclined partitions and protrusions on the partitions to slow the water flow, the oxygen dissolution effect is further improved. Compared with conventional aerators, the oxygenation device of this utility model has a larger and more uniform total dissolved oxygen.

Description

Technical Field

[0001] This utility model belongs to the technical field of aquaculture equipment, specifically relating to an oxygenation device for aquaculture. Background Technology

[0002] In aquaculture, to maximize profits, fishponds are often stocked with far more fish fry than the pond can support. To ensure the survival of the fry, oxygen must be continuously supplied to the pond to prevent oxygen deficiency due to overpopulation. Therefore, aeration devices are widely used in this field. However, conventional aeration devices still have drawbacks. These devices typically use oxygenating pipes installed in the pond to supply air or pure oxygen. During aeration, the pipes are located at the bottom of the pond, and oxygen enters through holes in the pipes and gradually dissolves into the water. While this method can significantly increase the oxygen content in a localized area, even achieving supersaturation, the overall increase in oxygen levels is not substantial for large ponds. Furthermore, conventional aeration devices are inefficient; unless liquid pure oxygen is added directly, a large amount of oxygen is wasted during the aeration process, and the cost of liquid pure oxygen is prohibitively high for aquaculture. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides an oxygenation device that is highly efficient in oxygenation, has higher energy utilization, and lower breeding costs.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] An aeration device for aquaculture includes an aeration box, a water pump, and a culture pond. The aeration box has an inlet and an outlet. The water pump is connected to the inlet, and the outlet points towards the culture pond. A partition is installed inside the aeration box, dividing the interior into upper and lower aeration chambers. Several water passage holes are opened through the partition. The inlet is located on the upper side of the partition, and the outlet is located on the lower side. After the water pump draws water into the upper aeration chamber, it forms a water curtain through the water passage holes and falls into the lower aeration chamber. At least one unidirectional fan is installed around the lower aeration chamber to blow air into the chamber, with the airflow direction of the unidirectional fan pointing towards the water curtain.

[0006] Preferably, there are multiple partitions, with adjacent partitions stacked at intervals and inclined in opposite directions, and the water passage holes on adjacent partitions are staggered. The bottom partition forms an upper oxygenation chamber above and a lower oxygenation chamber below.

[0007] Preferably, the upper surface of the partition plate is uniformly provided with a plurality of protrusions, which are staggered with the water passage holes.

[0008] Preferably, the oxygenation tank is also equipped with a dissolved oxygen sensor, which is located in the lower oxygenation chamber near the outlet.

[0009] Preferably, the dissolved oxygen sensor is connected to the unidirectional fan signal, and the oxygen content measured by the dissolved oxygen sensor is inversely correlated with the blowing power of the unidirectional fan.

[0010] Preferably, the oxygenation chamber is also equipped with a wind deflector, which is movably installed between the unidirectional fan and the water curtain, and the area of ​​the wind deflector is larger than the air outlet area of ​​the unidirectional fan. The dissolved oxygen sensor is connected to the wind deflector for signal transmission.

[0011] Preferably, at least one pair of slide rails are installed inside the oxygenation box, with each pair of slide rails installed on both sides of the unidirectional fan. The wind deflector is slidably installed on the slide rails and moves according to the reading signal of the dissolved oxygen sensor. The area of ​​the wind deflector covering the air outlet of the unidirectional fan is positively correlated with the oxygen content measured by the dissolved oxygen sensor.

[0012] Preferably, valves are installed at both the inlet and outlet. When the unidirectional fan is blowing air onto the water curtain, the valves are closed, creating a sealed space with continuously increasing pressure inside the oxygenation tank.

[0013] Preferably, the water pump's inlet is connected to the bottom of the aquaculture pond and pumps water from the bottom of the pond into the oxygenation tank.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] This invention relates to an aeration device for aquaculture. A water pump injects water into the aeration tank, forming a water curtain under the intervention of partitions. Simultaneously, a unidirectional fan blows air onto the water curtain, ensuring full contact between oxygen and water droplets. Multiple inclined partitions and protrusions on the partitions further smooth the water flow, enhancing oxygen dissolution. Compared to conventional aeration machines, this device dissolves a larger and more uniform amount of oxygen. Furthermore, the water pump, aeration tank, and aquaculture pond form a water circulation system, effectively guaranteeing the total oxygen content in the pond. This allows the same pond to accommodate more fish fry, improving economic efficiency. The overall equipment and operating costs are also lower than conventional aeration devices. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an aeration device for aquaculture in Example 1;

[0017] Figure 2 This is a schematic diagram of the cooperation between the windshield and the fan in Example 2.

[0018] 1-Oxygenation tank; 11-Inlet; 12-Outlet; 13-Valve; 14-Dissolved oxygen sensor; 15-Slide rail; 2-Water pump; 3-Baffle; 31-Water passage hole; 32-Protrusion; 4-One-way fan; 41-Windproof door; 5-Aquaculture pond. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] Example 1

[0021] Please see Figure 1 An aeration device for aquaculture includes an aeration tank 1, a water pump 2, and an aquaculture pond 3. The aeration tank 1 has an inlet 11 and an outlet 12. The water pump is connected to the inlet, and the outlet points towards the aquaculture pond. A partition 3 divides the aeration tank into upper and lower aeration chambers. Several through-holes 31 are provided in the partition. The inlet is located on the upper side of the partition, and the outlet is located on the lower side. Water pumped into the upper aeration chamber flows through the through-holes, forming a water curtain that falls into the lower aeration chamber. At least one unidirectional fan 4 is installed around the lower aeration chamber, blowing air into the chamber. The airflow from the unidirectional fan is directed towards the water curtain. The air source for the unidirectional fan can be air or pure oxygen.

[0022] The partition 3 consists of multiple partitions, with adjacent partitions stacked at intervals and tilted in opposite directions. The water passage holes on the adjacent partitions are staggered. The upper oxygenation chamber is formed above the bottom partition, and the lower oxygenation chamber is formed below it.

[0023] The upper surface of the partition 3 is uniformly provided with multiple protrusions 32, which are staggered with the water passage holes. The multi-layered partitions and the protrusions can buffer and restrict the water flow pumped out by the water pump, so that the water flow maintains a gentler flow rate when it falls into the lower aeration chamber through the water passage holes, thereby improving the melting effect of water droplets and air.

[0024] By using a one-way fan to blow air onto the water curtain, the contact area between the air and water droplets is increased, resulting in more complete oxygenation. Moreover, it is not just localized oxygenation; as long as the airflow is maintained, all the water entering the aquaculture pond can be fully oxygenated.

[0025] The oxygenation tank 1 is also equipped with a dissolved oxygen sensor 14, which is located in the lower oxygenation chamber near the outlet 12.

[0026] The dissolved oxygen sensor 14 is connected to the unidirectional fan 4 via a signal, and the oxygen content measured by the dissolved oxygen sensor is inversely correlated with the blowing power of the unidirectional fan.

[0027] Dissolved oxygen sensors are used to measure the water that is about to enter the aquaculture pond. If the oxygen content is low, the fan power is increased; if the oxygen content is high, the fan power can be reduced, thus saving energy while maintaining the oxygen content without causing a huge change.

[0028] Valves 13 are installed at both the inlet 11 and the outlet 12. When the unidirectional fan blows air onto the water curtain, the valves are closed, creating a sealed space with continuously increasing pressure inside the oxygenation box.

[0029] Because dissolved oxygen rate in water is affected by atmospheric pressure, a unidirectional fan in a closed space keeps blowing air, and the pressure in the oxygenation tank continues to increase, resulting in a higher upper limit for dissolved oxygen rate in water and thus higher dissolved oxygen efficiency.

[0030] The inlet of the water pump 2 is connected to the bottom of the aquaculture pond 5 and pumps water from the bottom of the aquaculture pond to the oxygenation tank. Since the overall density of dissolved oxygen water is lower than that of ordinary water, the oxygen is generally concentrated in the upper part of the aquaculture pond. The water pump connected to the bottom of the aquaculture pond pumps water with less oxygen content from the bottom into the oxygenation tank for oxygenation, which helps to improve the oxygenation efficiency in the aquaculture pond.

[0031] Example 2

[0032] Similar to Embodiment 1, the difference is that the oxygenation box 1 is also equipped with a wind deflector 41, which is movably installed between the unidirectional fan and the water curtain. The area of ​​the wind deflector is larger than the air outlet area of ​​the unidirectional fan, and the dissolved oxygen sensor is connected to the wind deflector instead of the dissolved oxygen sensor connected to the unidirectional fan in Embodiment 1.

[0033] The oxygenation chamber 1 is also equipped with at least one pair of slide rails 15. Each pair of slide rails is installed on both sides of the unidirectional fan. The wind deflector is slidably installed on the slide rail and moves according to the reading signal of the dissolved oxygen sensor. The area of ​​the wind deflector covering the air outlet of the unidirectional fan is positively correlated with the oxygen content measured by the dissolved oxygen sensor.

[0034] In this embodiment, a baffle is used to control the amount of oxygen blown onto the water curtain. Compared to controlling the fan power, this method provides more precise control over the amount of air blown. The baffle is connected to the slide rail via at least one electrically or mechanically driven slider. The specific driving method of the slider is a conventional technique in the field of mechanical equipment and will not be elaborated here. It should be noted that for wired sliders, waterproof sealant must be used to seal the through-holes where the power cord extends out of the oxygenation box.

[0035] The connection between the slider and the slide rail can also be replaced by an electromagnetically driven spring and counterweight connection, with the dissolved oxygen sensor signal controlling the magnetic attraction force on the counterweight to pull the windshield to adjust its position.

[0036] Example 3

[0037] Similar to Example 1, the difference lies in that the dissolved oxygen sensor is connected to the water pump instead of the unidirectional fan. The dissolved oxygen sensor's measurement of oxygen content is positively correlated with the water pump's output flow rate. That is, the higher the oxygen content, the greater the water pump's output flow rate; when the oxygen content is low, the water pump's output flow rate decreases to reduce the amount of water in the aeration tank.

[0038] The beneficial effects of this invention are as follows: water is pumped into the oxygenation tank by a water pump, forming a water curtain under the intervention of the baffles. At the same time, a one-way fan blows air onto the water curtain, allowing oxygen to fully contact the water droplets. Combined with the effect of multiple inclined baffles and the protrusions on the baffles to slow down the water flow, the oxygen dissolution effect is further improved. Compared with conventional aerators, the oxygenation device of this invention has a larger and more uniform total amount of dissolved oxygen. At the same time, the water pump, oxygenation tank and aquaculture pond form a water circulation, which can effectively ensure the total amount of oxygen in the aquaculture pond. This allows the same aquaculture pond to accommodate more fish fry, improving economic benefits. Its overall equipment cost and operating cost are also lower than conventional aeration devices.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. An aeration device for aquaculture, characterized in that, The system includes an oxygenation tank (1), a water pump (2), and a breeding pond (5). The oxygenation tank (1) is equipped with an inlet (11) and an outlet (12). The water pump is connected to the inlet, and the outlet points towards the breeding pond. The oxygenation tank is equipped with a partition (3), which divides the interior of the oxygenation tank into upper and lower oxygenation chambers. Several water passage holes (31) are opened on the partition. The inlet is located on the upper side of the partition, and the outlet is located on the lower side of the partition. After the water pump draws water into the upper oxygenation chamber, it forms a water curtain through the water passage holes and falls into the lower oxygenation chamber. At least one one-way fan (4) is installed around the lower oxygenation chamber to blow air into the interior of the oxygenation chamber. The direction of the one-way fan is towards the water curtain.

2. The aeration device for aquaculture according to claim 1, characterized in that, The partition (3) consists of multiple partitions, with each adjacent partition stacked at intervals and tilted in opposite directions. The water passage holes on the adjacent partitions are staggered. The upper oxygenation chamber is formed above the bottom partition and the lower oxygenation chamber is formed below it.

3. The aeration device for aquaculture according to claim 1 or 2, characterized in that, The upper surface of the partition (3) is uniformly provided with a plurality of protrusions (32), which are staggered with the water passage holes.

4. The aeration device for aquaculture according to claim 1 or 2, characterized in that, The oxygenation tank (1) is also equipped with a dissolved oxygen sensor (14), which is located in the lower oxygenation chamber near the outlet (12).

5. The aeration device for aquaculture according to claim 4, characterized in that, The dissolved oxygen sensor (14) is connected to the unidirectional fan (4) via a signal connection. The oxygen content measured by the dissolved oxygen sensor is inversely correlated with the blowing power of the unidirectional fan.

6. The aeration device for aquaculture according to claim 4, characterized in that, The oxygenation chamber (1) is also equipped with a wind deflector (41). The wind deflector is movably installed between the unidirectional fan and the water curtain, and the area of ​​the wind deflector is larger than the air outlet area of ​​the unidirectional fan. The dissolved oxygen sensor is connected to the wind deflector for signal transmission.

7. The aeration device for aquaculture according to claim 6, characterized in that, The oxygenation box (1) is also equipped with at least one pair of slide rails (15). Each pair of slide rails is installed on both sides of the unidirectional fan. The wind deflector is slidably installed on the slide rail and moves according to the reading signal of the dissolved oxygen sensor. The area of ​​the wind deflector covering the air outlet of the unidirectional fan is positively correlated with the oxygen content measured by the dissolved oxygen sensor.

8. The aeration device for aquaculture according to claim 1, characterized in that, Valves (13) are installed at both the inlet (11) and outlet (12). When the unidirectional fan blows air onto the water curtain, the valves are closed, creating a sealed space with continuously increasing pressure inside the oxygenation box.

9. The aeration device for aquaculture according to claim 1, characterized in that, The inlet of the water pump (2) is connected to the bottom of the aquaculture pond (5) and pumps water from the bottom of the aquaculture pond to the oxygenation box.

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