Oxygenation device for fishery breeding

Abstract

The oxygenation device comprises an oxygenation box, a water pump and a culture pond, a water inlet and a water outlet are formed in the oxygenation box, a partition plate is arranged in the oxygenation box and divides the interior of the oxygenation box into an upper oxygenation chamber and a lower oxygenation chamber, and a plurality of water passing holes penetrating through the partition plate are formed in the partition plate; water pumped by the water pump enters the upper oxygenation chamber and then penetrates through the water passing holes to form a water curtain to fall into the lower oxygenation chamber, at least one one-way fan blowing air into the oxygenation chamber is installed on the peripheral side of the lower oxygenation chamber, and the wind direction of the one-way fan points to the water curtain. Water is injected into the oxygenation box through the water pump, a water curtain is formed under intervention of the partition plates, meanwhile, the one-way fan is matched to blow air to the water curtain, oxygen makes full contact with water drops, and the dissolution effect of the oxygen is further improved by combining the gentle effect of the multiple inclined partition plates and the protruding parts on the partition plates on the water flow velocity. According to the oxygenation device, the total amount of oxygen dissolved in the oxygenation device is larger and more uniform.

Description

Technical Field

[0001] The invention belongs to the technical field of fishery breeding equipment, and in particular relates to an oxygenation device for fishery breeding. Background Art

[0002] In the aquaculture industry, to maximize economic benefits, fish fry are often raised in a single pond in numbers far exceeding the pond's capacity. To ensure the survival of the fry, oxygen must be continuously added to the pond to prevent oxygen depletion caused by the excessive number of fry. Consequently, aeration devices have become widely used in this field. However, conventional aeration devices still have drawbacks. Conventional aeration devices typically employ an aeration pipe installed in the pond, which pumps air or pure oxygen into the pond. During aeration, the pipe is located at the bottom of the pond, and oxygen enters the pond through holes in the pipe and gradually dissolves into the water. While this aeration method can significantly increase the oxygen content in a local area, even reaching supersaturation, the overall increase in oxygen levels is minimal for a wide range of ponds. Furthermore, conventional aeration devices have poor energy efficiency. Unless liquid pure oxygen is added directly, a large amount of oxygen is wasted during the aeration process. However, the high cost of liquid pure oxygen makes it unaffordable for aquaculture. Summary of the Invention

[0003] In order to solve the defects of the prior art, the present invention provides an oxygenation device which can efficiently increase oxygen, has higher energy utilization rate and lower breeding cost.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] An oxygenation device for fishery breeding comprises an oxygenation box, a water pump and a breeding pond, wherein the oxygenation box is provided with a water inlet and a water outlet, the water pump is connected to the water inlet, and the water outlet is directed toward the breeding pond; a partition is provided inside the oxygenation box, which divides the interior of the oxygenation box into an upper and a lower oxygenation chamber, and a plurality of water holes penetrating the partition are provided on the partition, the water inlet is located on the upper side of the partition, and the water outlet is located on the lower side of the partition, after the water pump pumps water into the upper oxygenation chamber, it passes through the water holes to form a water curtain and falls into the lower oxygenation chamber, and at least one unidirectional fan is installed on the periphery of the lower oxygenation chamber to blow air into the interior of the oxygenation chamber, and the wind direction of the unidirectional fan is directed toward the water curtain.

[0006] Preferably, there are multiple partitions, adjacent partitions are stacked and tilted in opposite directions, and the water holes on adjacent partitions are staggered, and an upper oxygenation chamber is formed above the bottom partition and a lower oxygenation chamber is formed below it.

[0007] Preferably, a plurality of protrusions are evenly arranged on the upper surface of the partition, and the protrusions are staggered with the water holes.

[0008] Preferably, a dissolved oxygen sensor is further installed in the aeration box, and the dissolved oxygen sensor is located in the lower aeration chamber near the water outlet.

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

[0010] Preferably, a windshield is installed in the oxygen enrichment box, which is movably installed between the one-way fan and the water curtain, and the area of ​​the windshield is larger than the outlet area of ​​the one-way fan, and the dissolved oxygen sensor is connected to the windshield signal.

[0011] Preferably, at least one pair of slide rails is installed on the inner side of the oxygen enrichment box, and each pair of slide rails is installed on both sides of the one-way fan. The wind shield is slidably installed on the slide rails and controls its movement according to the reading signal of the dissolved oxygen sensor. The area covered by the wind shield at the air outlet of the one-way fan is positively correlated with the oxygen content measured by the dissolved oxygen sensor.

[0012] Preferably, valves are installed at the water inlet and the water outlet, and when the one-way fan blows air to the water curtain, the valves are closed to form a closed space with continuously increasing pressure in the oxygenation box.

[0013] Preferably, the water inlet of the water pump is connected to the bottom of the breeding pond and water is pumped from the bottom of the breeding pond to the oxygenation tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The oxygenation device for fishery breeding of the present invention injects water into the oxygenation box through a water pump and forms a water curtain under the intervention of the partition, and at the same time cooperates with a one-way fan to blow air into the water curtain, so that oxygen and water droplets are fully in contact. Combined with the multiple inclined partitions and the raised parts on the partitions, the water flow rate is smoothed, and the oxygen dissolution effect is further improved. Compared with the oxygenation of conventional oxygenators, the total amount of oxygen dissolved in the oxygenation device of the present invention is larger and more uniform. At the same time, the water pump, the oxygenation box and the breeding pond form a water circulation, which can effectively ensure the total amount of oxygen in the breeding pond, so that the same breeding pond can accommodate more fry, thereby improving economic benefits. Its overall equipment cost and operating cost are also lower than those of conventional oxygenation devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an oxygenation device for fishery farming in Example 1;

[0017] Figure 2 This is a schematic diagram of the coordination between the air shield door and the fan in Example 2.

[0018] 1-Aeration box; 11-Water inlet; 12-Water outlet; 13-Valve; 14-Dissolved oxygen sensor; 15-Slide rail; 2-Water pump; 3-Partition; 31-Water hole; 32-Bracket; 4-One-way fan; 41-Air shield; 5-Aquaculture pond. DETAILED DESCRIPTION

[0019] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0020] Example 1

[0021] See also Figure 1 An oxygenation device for fish farming includes an oxygenation box 1, a water pump 2, and a culture pond 3. The oxygenation box 1 is provided with a water inlet 11 and a water outlet 12. The water pump is connected to the water inlet, and the water outlet is directed toward the culture pond. A partition 3 is provided inside the oxygenation box, which divides the interior of the oxygenation box into upper and lower oxygenation chambers. The partition is provided with a plurality of water holes 31 that pass through the partition. The water inlet is located on the upper side of the partition, and the water outlet is located on the lower side of the partition. After the water pump pumps water into the upper oxygenation chamber, it passes through the water holes to form a water curtain and falls into the lower oxygenation chamber. At least one unidirectional fan 4 is installed around the periphery of the lower oxygenation chamber to blow air into the interior of the oxygenation chamber, and the wind direction of the unidirectional fan is directed toward the water curtain. The air source of the unidirectional fan can be air or pure oxygen.

[0022] There are multiple partitions 3, and adjacent partitions are stacked and tilted in opposite directions. The water holes on adjacent partitions are staggered. The upper part of the bottom partition forms an upper oxygenation chamber, and the lower part forms a lower oxygenation chamber.

[0023] The upper surface of the partition 3 is uniformly provided with multiple raised portions 32, which are staggered relative to the water holes. The multiple layers of partitions and raised portions act as a buffer to limit the flow of water pumped out, maintaining a more gradual flow rate as the water passes through the water holes and falls into the lower aeration chamber, thereby enhancing the incorporation of water droplets and air.

[0024] Use a one-way fan to blow air on the water curtain to increase the contact area between air and water droplets and make the dissolved oxygen more sufficient. And it is not just the local dissolved oxygen. As long as the wind keeps blowing, all the water entering the breeding pond can be fully oxygenated.

[0025] A dissolved oxygen sensor 14 is also installed in the aeration box 1 and is located in the lower aeration chamber near the water outlet 12 .

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

[0027] A dissolved oxygen sensor is used to measure the water about to enter the breeding pond. If the oxygen content is low, the fan power is increased. If the oxygen content is high, the fan power can be controlled to decrease, saving energy while maintaining a significant change in the oxygen content.

[0028] Valves 13 are installed at the water inlet 11 and the water outlet 12. When the one-way fan blows air to the water curtain, the valves are closed to form a closed space with continuously increasing pressure in the oxygenation box.

[0029] Since the dissolved oxygen rate in water is affected by atmospheric pressure, the one-way fan in the closed space keeps blowing, the pressure in the oxygenation box continues to increase, the upper limit of the dissolved oxygen rate in water is higher, and the dissolved oxygen efficiency is also higher.

[0030] The water inlet of the water pump 2 is connected to the bottom of the breeding pond 5 and pumps water from the bottom of the breeding pond to the oxygenation box. Since the overall density of dissolved oxygen water is smaller than that of ordinary water, the oxygen is generally biased towards the upper part of the breeding pond. The water pump is connected to the bottom of the breeding pond to pump water with less oxygen content at the bottom into the oxygenation box for oxygenation, which is beneficial to improving the oxygenation efficiency in the breeding pond.

[0031] Example 2

[0032] Similar to Example 1, the difference is that a wind shield door 41 is also installed in the oxygen enrichment box 1, and the wind shield door is movably installed between the one-way fan and the water curtain, and the area of ​​the wind shield door is larger than the air outlet area of ​​the one-way fan, and the dissolved oxygen sensor is connected to the wind shield door signal instead of the dissolved oxygen sensor and the one-way fan signal connection in Example 1.

[0033] At least one pair of slide rails 15 are also installed on the inside of the oxygen enrichment box 1, and each pair of slide rails is installed on both sides of the one-way fan. The wind shield is slidably installed on the slide rails and controls its movement according to the reading signal of the dissolved oxygen sensor. The area covered by the wind shield at the air outlet of the one-way fan is positively correlated with the oxygen content measured by the dissolved oxygen sensor.

[0034] In this embodiment, a damper is used to control the amount of oxygen blown toward the water curtain. This provides more precise control of the air volume than controlling fan power. The damper is connected to the slide rail via at least one electrically or mechanically driven slider. The specific actuation method for the slider is conventional in the field of mechanical equipment and will not be detailed here. However, it should be noted that for wired sliders, the through-hole through which the power cord extends from the aeration box requires the addition of waterproof sealant to seal it.

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

[0036] Example 3

[0037] Similar to Example 1, the difference is that the dissolved oxygen sensor is connected to the water pump signal instead of the one-way fan signal. The oxygen content measured by the dissolved oxygen sensor is positively correlated with the output flow rate of the water pump. That is, the higher the oxygen content, the greater the water pump output flow rate. When the oxygen content is low, the water pump output flow rate is reduced to reduce the amount of water in the aeration tank.

[0038] The beneficial effects of the present invention are: water is injected into the oxygenation box through a water pump and a water curtain is formed under the intervention of the partition, and at the same time, a one-way fan is used to blow air into the water curtain, so that oxygen and water droplets are fully in contact. Combined with the multiple inclined partitions and the raised parts on the partitions, the water flow rate is smoothed, which further improves the oxygen dissolution effect. Compared with the conventional oxygenator, the total amount of oxygen dissolved in the oxygenation device of the present invention is larger and more uniform. At the same time, the water pump, the oxygenation box and the breeding pond form a water flow circulation, which can effectively ensure the total amount of oxygen in the breeding pond, so that the same breeding pond can accommodate more fry, thereby improving economic benefits. Its overall equipment cost and operating cost are also lower than those of conventional oxygenation devices.

[0039] Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention, and that those skilled in the art may make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. An oxygenation device for fish farming, characterized in that: The invention comprises an aeration box (1), a water pump (2) and a culture pond (3), wherein the aeration box (1) is provided with a water inlet (11) and a water outlet (12), the water pump is connected to the water inlet, and the water outlet is directed to the culture pond; a partition (3) is provided in the aeration box, and the partition divides the interior of the aeration box into an upper aeration chamber and a lower aeration chamber, and a plurality of water holes (31) penetrating the partition are provided on the partition, the water inlet is located on the upper side of the partition, and the water outlet is located on the lower side of the partition, and the water pump pumps water into the upper aeration chamber and then passes through the water holes to form a water curtain and falls into the lower aeration chamber, and at least one unidirectional fan (4) is installed on the periphery of the lower aeration chamber to blow air into the interior of the aeration chamber, and the wind direction of the unidirectional fan is directed to the water curtain.

2. The oxygenation device for fish farming according to claim 1, characterized in that: There are multiple partitions (3), each adjacent partition is stacked and arranged with an inverse inclination, and the water holes on the adjacent partitions are staggered, and an upper oxygenation chamber is formed above the bottom partition and a lower oxygenation chamber is formed below it.

3. The fishery aquaculture oxygenation device according to claim 1 or 2, characterized in that: A plurality of raised portions (32) are evenly arranged on the upper surface of the partition (3), and the raised portions are staggered with the water holes.

4. The fishery aquaculture oxygenation device according to claim 1 or 2, characterized in that: A dissolved oxygen sensor (14) is also installed in the aeration box (1), and the dissolved oxygen sensor is located in the lower aeration chamber near the water outlet (12).

5. The fishery aquaculture oxygenation device according to claim 4, characterized in that: The dissolved oxygen sensor (14) is connected to the signal of the one-way fan (4), and the oxygen content measured by the dissolved oxygen sensor is inversely correlated with the blowing power of the one-way fan.

6. The aeration device for fishery farming according to claim 4, characterized in that: The oxygen enrichment box (1) is further provided with a windshield (41), which is movably installed between the one-way fan and the water curtain, and the area of ​​the windshield is larger than the outlet area of ​​the one-way fan, and the dissolved oxygen sensor is connected to the windshield signal.

7. The fishery aquaculture oxygenation device according to claim 6, characterized in that: At least one pair of slide rails (15) is further installed inside the oxygen enrichment box (1), and each pair of slide rails is installed on both sides of the one-way fan. The damper is slidably installed on the slide rails and is controlled to move according to the reading signal of the dissolved oxygen sensor. The area covered by the damper at the air outlet of the one-way fan is positively correlated with the oxygen content measured by the dissolved oxygen sensor.

8. The oxygenation device for fish farming according to claim 1, characterized in that: Valves (13) are installed at the water inlet (11) and the water outlet (12). When the one-way fan blows air to the water curtain, the valves are closed to form a closed space with continuously increasing pressure in the oxygenation box.

9. The oxygenation device for fish farming according to claim 1, characterized in that: The water inlet of the water pump (2) is connected to the bottom of the breeding pond (5) and pumps water from the bottom of the breeding pond to the oxygenation tank.

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