A remote control full-automatic oxygen dissolving machine

Abstract

This invention discloses a remotely controllable fully automatic dissolved oxygen generator, relating to the field of aquaculture equipment technology. It includes a storage tank, a connecting pipe installed at the top of the storage tank, an injection pipe installed at the top of the connecting pipe, and a water inlet pipe installed at the top of the injection pipe. The top of the injection pipe has multiple sets of annularly arranged water inlets, and the inner wall of the injection pipe has a drainage groove located to one side of the water inlets. A baffle is installed on the inner wall of the drainage groove. This remotely controllable fully automatic dissolved oxygen generator, through the multiple annularly arranged water inlets at the top of the injection pipe and the baffle installed on the inner wall of the drainage groove, forming a gap between the baffle and the inner wall of the drainage groove, forces water to pass through the gap at high speed and shears and disperses it into fine water droplets or a mist-like water curtain. This significantly increases the contact surface area between water and gas without adding additional power, thereby improving the oxygen dissolution rate per unit volume of water.

Description

Technical Field

[0001] This invention relates to the field of aquaculture equipment technology, specifically to a fully automatic dissolved oxygen generator that can be remotely controlled. Background Technology

[0002] In the field of aquaculture, with the continuous increase in stocking density, dissolved oxygen management has become a key factor affecting aquaculture efficiency and the health of organisms. Traditional oxygenation methods, such as impeller aerators and aeration discs, can increase dissolved oxygen levels, but they have problems such as high energy consumption and uneven dissolved oxygen distribution, making it difficult to meet the needs of modern and refined aquaculture. In recent years, the development of the Internet of Things and automated control technology has promoted the intelligent upgrading of aquaculture equipment. Remote monitoring and automatic adjustment have become new research hotspots, aiming to achieve more efficient and precise dissolved oxygen management through technological means.

[0003] However, in existing intelligent dissolved oxygenation technologies, the problem lies in how to achieve efficient and uniform mixing of water and oxygen to increase the oxygen dissolution rate per unit volume of water. Traditional methods often rely on mechanical stirring or high-pressure injection, which not only consume a lot of energy but also make it difficult to ensure the uniformity of dissolved oxygen. Especially in large-scale aquaculture ponds, local hypoxia still occurs from time to time. This problem directly limits the further increase of stocking density and the optimization of aquaculture benefits, so it needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a fully automatic dissolved oxygen generator that can be remotely controlled, so as to solve the problems of uneven mixing of water and oxygen, low dissolved oxygen efficiency and high energy consumption in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a remotely controllable fully automatic dissolved oxygen generator, comprising a storage tank, a connecting pipe installed at the top of the storage tank, an injection pipe installed at the top of the connecting pipe, a water inlet pipe installed at the top of the injection pipe, a plurality of annularly arranged water inlet holes opened at the top of the injection pipe, a drainage groove opened on the inner wall of the injection pipe, the drainage groove being located on one side of the water inlet holes, a baffle installed on the inner wall of the drainage groove, a gap being formed between the baffle and the inner wall of the drainage groove, and a conical connecting groove opened at the bottom end of the injection pipe, the larger opening of the conical connecting groove being located at the top of the connecting pipe, and the smaller opening of the conical connecting groove being located below the drainage groove;

[0006] The surface of the connecting pipe is provided with an oxygen injection hole, and an oxygen injection tube is inserted into the inner wall of the oxygen injection hole. A flow meter is provided on the inner wall of the oxygen injection tube. An annular oxygen filling groove is provided on the inner wall of the connecting pipe, and the oxygen filling groove is connected through the oxygen injection hole. An oxygen injection groove is provided on the surface of the oxygen filling groove, and the oxygen injection groove is connected through the inner wall of the connecting pipe.

[0007] Furthermore, a drain pipe is installed at the bottom of the storage tank, a fixed base is installed at the bottom of the storage tank, a first water pump is installed on one side of the top of the fixed base, and a second water pump is installed on the other side of the top of the fixed base. The first water pump and the second water pump are backups for each other.

[0008] Furthermore, both the first and second water pumps are equipped with pumping pipes at their input ends, and valves are installed on the inner wall of the drain pipe. The output ends of the first and second water pumps are fixedly installed at the bottom end of the inlet pipe.

[0009] Furthermore, a retaining ring is installed on the surface of the storage tank, and a control box is installed on the surface of the retaining ring.

[0010] Furthermore, a wireless communication module is installed inside the control box.

[0011] Furthermore, a solenoid valve is installed on the oxygen injection pipe, and the solenoid valve is electrically connected to the control box.

[0012] Furthermore, a controller is provided inside the control box, and an external connecting pipe is installed on the surface of the storage tank. A first liquid level sensor and a second liquid level sensor are respectively installed at the upper and lower ends of the external connecting pipe. The controller is electrically connected to the first liquid level sensor, the second liquid level sensor, and the solenoid valve installed on the oxygen injection pipe.

[0013] Furthermore, the controller is configured to: control the valve to close when the first liquid level sensor detects that the liquid level has reached a preset upper limit threshold; and control the valve to open when the second liquid level sensor detects that the liquid level has reached a preset lower limit threshold.

[0014] Furthermore, the controller is also configured to: control the solenoid valve to open when the second liquid level sensor detects that the liquid level has reached a preset lower threshold; and control the solenoid valve to close when the first liquid level sensor detects that the liquid level has reached a preset upper threshold.

[0015] Compared with the prior art, the present invention provides a remotely controllable fully automatic dissolved oxygen generator. By opening multiple sets of annularly arranged water inlets at the top of the injection pipe and installing baffles on the inner wall of the drainage trough, forming a gap between the baffles and the inner wall of the drainage trough, the water flow is forced to pass through the gap at high speed and is sheared and dispersed into fine water droplets or mist-like water curtain. This significantly increases the contact surface area between water and gas without adding additional power, thereby improving the oxygen dissolution rate per unit volume of water.

[0016] By opening a conical connecting groove at the bottom of the injection pipe, with the larger opening of the conical connecting groove located at the top of the connecting pipe and the smaller opening located below the drainage groove, the atomized water falling at high speed from above and the oxygen sprayed from the side are accelerated to mix in the narrowing channel, thereby enhancing the adhesion efficiency of oxygen molecules to the surface of water droplets and improving the uniformity of water-air mixing.

[0017] By creating an annular oxygenation tank on the inner wall of the connecting pipe and an oxygen injection tank that extends through the inner wall of the connecting pipe, oxygen enters the oxygenation tank through the oxygen injection hole and is evenly distributed along the annular path. The oxygen is then sprayed into the inner cavity of the connecting pipe from multiple directions through the oxygen injection tank. This achieves all-round contact between oxygen and the water curtain, avoiding the problem of excessively high or low local oxygen concentrations.

[0018] By installing a first water pump on one side of the top of the fixed base and a second water pump on the other side, with the first and second water pumps serving as backups for each other, the controller automatically switches to the backup water pump when the main water pump fails or is overloaded. This ensures uninterrupted and continuous water supply and redundancy for the dissolved oxygen generator, avoiding the risk of downtime due to the failure of a single water pump. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is one of the overall structural schematic diagrams provided in the embodiments of the present invention;

[0021] Figure 2 This is the second overall structural schematic diagram provided for an embodiment of the present invention;

[0022] Figure 3 This is the third overall structural schematic diagram provided for an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the oxygen injection pipe structure provided in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the oxygen injection hole structure provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the water inlet structure provided in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the baffle structure provided in an embodiment of the present invention;

[0027] Figure 8This is a schematic diagram of the oxygenation tank structure provided in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Storage tank; 2. Connecting pipe; 3. Injection pipe; 4. Water inlet pipe; 5. Water inlet hole; 6. Drainage trough; 7. Baffle; 8. Conical connecting groove; 9. Oxygen injection hole; 10. Oxygen injection pipe; 11. Oxygen filling tank; 12. Oxygen injection tank; 13. Drainage pipe; 14. Fixed base; 15. First water pump; 16. Second water pump; 17. Pumping pipe; 18. External connecting pipe; 19. Control box. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] As attached Figure 1 To be continued Figure 8 As shown:

[0032] Example 1:

[0033] This invention provides a remotely controllable fully automatic dissolved oxygen generator, including a storage tank 1, a connecting pipe 2 installed at the top of the storage tank 1, an injection pipe 3 installed at the top of the connecting pipe 2, a water inlet pipe 4 installed at the top of the injection pipe 3, a plurality of annularly arranged water inlet holes 5 opened at the top of the injection pipe 3, a drainage groove 6 opened on the inner wall of the injection pipe 3, and the drainage groove 6 is located on one side of the water inlet hole 5, a baffle 7 is installed on the inner wall of the drainage groove 6, and a gap is formed between the baffle 7 and the inner wall of the drainage groove 6, and a conical connecting groove 8 opened at the bottom end of the injection pipe 3, with the larger opening of the conical connecting groove 8 located at the top of the connecting pipe 2, and the smaller opening of the conical connecting groove 8 located below the drainage groove 6;

[0034] The surface of the connecting pipe 2 is provided with an oxygen injection hole 9, and an oxygen injection pipe 10 is inserted into the inner wall of the oxygen injection hole 9. A flow meter is installed on the inner wall of the oxygen injection pipe 10. The inner wall of the connecting pipe 2 is provided with an annular oxygen filling groove 11, and the oxygen filling groove 11 is connected to the oxygen injection hole 9. An oxygen injection groove 12 is provided on the surface of the oxygen filling groove 11, and the oxygen injection groove 12 is connected to the inner wall of the connecting pipe 2. A gap is formed between the baffle 7 and the inner wall of the drainage groove 6. A solenoid valve is installed on the oxygen injection pipe 10, and the solenoid valve is electrically connected to the control box 19.

[0035] In use, external water is supplied to the injection pipe 3 through the inlet pipe 4. The water flow first reaches the multiple annularly arranged inlet holes 5 at the top of the injection pipe 3. After being diverted by the inlet holes 5, the water flows downward along the inner wall of the injection pipe 3, and then enters the drainage trough 6 area. A baffle 7 is installed on the inner wall of the drainage trough 6, and a narrow gap is formed between the baffle 7 and the inner wall of the drainage trough 6. The water flow is forced to pass through this gap at high speed, thereby dispersing the water column into fine water droplets or a mist-like water curtain, increasing the contact surface area between water and air. At the same time, an external oxygen source enters the annular oxygen filling trough 11 inside the connecting pipe 2 through the oxygen injection pipe 10 and the oxygen injection hole 9. The oxygen injection trough 12 on the surface of the oxygen filling trough 11 further guides the oxygen to the inner wall of the connecting pipe 2, so that the oxygen enters the interior of the connecting pipe 2 in an annular diffusion manner. At this time, the atomized water flowing down from above the injection pipe 3 continues downward after passing through the drainage trough 6 and enters the conical connecting trough 8. The larger opening of the connecting groove 8 is located at the top of the connecting pipe 2, and the smaller opening is located below the drain groove 6, forming a gradually narrowing channel to accelerate the flow of the water-air mixture to the connecting pipe 2. In the conical connecting groove 8, the atomized water meets the oxygen sprayed from the oxygen injection tank 12. The oxygen molecules quickly attach to the surface of the tiny water droplets, and some oxygen dissolves in the water. The undissolved oxygen enters the storage tank 1 along with the water flow. Hollow spheres are placed in the storage tank 1 beforehand. The water flow impacts the hollow spheres, causing them to roll and further shear and break up the undissolved oxygen and reintegrate it into the water, thereby improving the oxygen dissolution efficiency. Throughout the process, the flow meter monitors the oxygen flow rate in the oxygen injection pipe 10 in real time, while the liquid level sensors (first and second liquid level sensors) detect the upper and lower limits of the liquid level in the storage tank 1, respectively. The controller controls the opening and closing of the solenoid valve according to the liquid level signal, and at the same time, the valve is manually controlled to realize automated water intake and oxygen injection.

[0036] Example 2:

[0037] This embodiment is basically the same as the previous embodiment, except that a drain pipe 13 is installed at the bottom of the storage tank 1, a fixed base 14 is installed at the bottom of the storage tank 1, a first water pump 15 is installed on one side of the top of the fixed base 14, and a second water pump 16 is installed on the other side of the top of the fixed base 14. The first water pump 15 and the second water pump 16 are backups for each other. A water suction pipe 17 is installed at the input end of both the first water pump 15 and the second water pump 16. A valve is installed on the inner wall of the drain pipe 13, and the output ends of the first water pump 15 and the second water pump 16 are fixedly installed at the bottom of the water inlet pipe 4. A fixing ring is installed on the surface of the storage tank 1, and a control box 19 is installed on the surface of the fixing ring. A wireless communication module is installed inside the control box 19. An internal controller is installed. An external connecting pipe 18 is installed on the surface of the storage tank 1. A first liquid level sensor and a second liquid level sensor are respectively installed at the upper and lower ends of the external connecting pipe 18. The controller is electrically connected to the first liquid level sensor, the second liquid level sensor, and the solenoid valve installed on the oxygen injection pipe 10. The controller is configured to: control the valve to close when the first liquid level sensor detects that the liquid level has reached a preset upper limit threshold; and control the valve to open when the second liquid level sensor detects that the liquid level has reached a preset lower limit threshold. The controller is also configured to: control the solenoid valve to open when the second liquid level sensor detects that the liquid level has reached a preset lower limit threshold; and control the solenoid valve to close when the first liquid level sensor detects that the liquid level has reached a preset upper limit threshold.

[0038] The first water pump 15 and the second water pump 16 remain running under normal operating conditions and are not shut down. The continuous operation of the pumps maintains the circulating power of the water flow within the system, preventing impact damage to the equipment caused by frequent pump starts and stops. Simultaneously, it ensures continuous water pressure at the inlet pipe 4, guaranteeing that water can immediately respond and inject into the injection pipe 3 when the valve on the drain pipe 13 is opened. In this embodiment, the control objects that need to be closed and opened based on the liquid level signal are the valve installed on the drain pipe 13 and the solenoid valve installed on the oxygen injection pipe 10; the water pumps do not participate in start-stop control.

[0039] First, the operator starts the system via a remote terminal or control box 19. After the system starts, the controller in control box 19 first controls the first water pump 15 to start running. The first water pump 15 draws water from an external source through the pumping pipe 17, pressurizes the water, and continuously sends it into the inlet pipe 4 through its output end. If the first water pump 15 malfunctions during operation, the controller determines that the first water pump 15 is malfunctioning through current detection or flow detection, and automatically switches to start the second water pump 16, which takes over the work of the first water pump 15, achieving seamless switching between them as backups and ensuring uninterrupted water delivery. During the entire operation of the system, whether the first water pump 15 or the second water pump 16 is running, the pump in operation will always continue to run and will not stop due to changes in liquid level.

[0040] In the initial state of the system, the liquid level in storage tank 1 is low. The second liquid level sensor at the lower end of the external connecting pipe 18 detects that the liquid level is lower than or equal to the preset lower threshold. At this time, the controller issues a control command to open the valve on the drain pipe 13 and simultaneously control the solenoid valve on the oxygen injection pipe 10 to open. Since the first water pump 15 (or the second water pump 16) is always running, the pump continuously sends water through the inlet pipe 4 into the inlet hole 5 at the top of the injection pipe 3. After the water flow is diverted through the inlet hole 5, it flows into the drain trough 6 along the inner wall of the injection pipe 3, and is squeezed and accelerated at the gap formed by the baffle 7 and the inner wall of the drain trough 6, and enters the connecting pipe 2 in the form of a high-speed jet water curtain through the conical connecting groove 8. At the same time, after the solenoid valve on the oxygen injection pipe 10 is opened, the external oxygen source enters the annular oxygen filling groove 11 on the inner wall of the connecting pipe 2 through the oxygen injection hole 9, and then diffuses evenly into the interior of the connecting pipe 2 through the oxygen injection groove 12 opened on the surface of the oxygen filling groove 11. The atomized water and oxygen are fully mixed and contacted in the conical connecting groove 8 and the connecting pipe 2. The oxygen quickly dissolves in the water, forming a water body with a high dissolved oxygen concentration. Then the mixed water flows into the storage tank 1 through the connecting pipe 2.

[0041] The internal working pressure of storage tank 1 is designed to be 4 kg. During continuous water intake, as the water pump continuously supplies water into the tank and the valve on drain pipe 13 is open, the water level in the tank gradually rises, and the pressure inside the tank is maintained at approximately 4 kg by balancing the inflow and outflow. Under this pressure condition, the dissolved oxygen efficiency of the water reaches its optimal level, while the power consumption of the water pump is at its most economical level. Oxygen is more soluble in water at 4 kg pressure, and the dissolved oxygen concentration can be stably maintained at a high level, fully meeting the dissolved oxygen requirements of aquaculture. The fully oxygenated water is discharged out through drain pipe 13 at the bottom of storage tank 1 for use in the aquaculture ponds.

[0042] As the system continues to operate, the liquid level in storage tank 1 gradually rises until the first liquid level sensor at the upper end of the external connecting pipe 18 detects that the liquid level has reached the preset upper limit threshold. At this point, the controller issues a control command to close the valve on drain pipe 13 and simultaneously close the solenoid valve on oxygen injection pipe 10. Because the valve on drain pipe 13 is closed, water in storage tank 1 no longer drains out. However, because the first water pump 15 (or the second water pump 16) continues to operate, the pump continues to supply water to inlet pipe 4. To prevent excessive system pressure, an overflow circuit or pressure regulating valve can be installed in storage tank 1 or the inlet pipe to return excess water to the water source or discharge it through a bypass, maintaining the system pressure within the safe range of 4 kg / m², ensuring the system's structural safety and sealing performance are not affected. It should be noted that this overflow circuit or pressure regulating valve is a conventional technique in this field and will not be described in detail here.

[0043] After the valve on the drain pipe 13 and the solenoid valve on the oxygen injection pipe 10 are closed, water no longer flows out of the storage tank 1, and the system is in a state of suspended water production. However, the first water pump 15 (or the second water pump 16) continues to run and remains on standby, ready to replenish water to the storage tank 1 immediately when the drain valve is reopened. When the water used in the aquaculture pond causes the liquid level in the storage tank 1 to drop, and the second liquid level sensor at the lower end of the external connecting pipe 18 detects that the liquid level has reached the preset lower threshold again, the controller controls the valve on the drain pipe 13 to open again, and at the same time controls the solenoid valve on the oxygen injection pipe 10 to open, restoring the water intake, dissolved oxygen, and drainage process, and so on in a continuous cycle.

[0044] Through the wireless communication module installed in the control box 19, operators can remotely view the liquid level data fed back by the first and second liquid level sensors, the operating status of the first and second water pumps 15 and 16, the oxygen flow rate measured by the flow meter in the oxygen injection pipe 10, and the opening and closing status of the valves on the drain pipe 13 and the solenoid valves on the oxygen injection pipe 10 in real time via mobile applications, computer monitoring platforms, and other remote terminals. Simultaneously, operators can send control commands to the controller via the remote terminal to manually force the opening and closing of the valves on the drain pipe 13 and the solenoid valves on the oxygen injection pipe 10, allowing for manual intervention in special operating conditions. For example, when the aquaculture pond requires a large amount of high-oxygenated water, the valves on the drain pipe 13 and the solenoid valves on the oxygen injection pipe 10 can be remotely forced open, allowing the system to continuously produce high-oxygenated water without being limited by the upper limit threshold of the liquid level.

[0045] By designing the water pump to operate continuously, the valves and solenoid valves on the drain pipe 13 and oxygen injection pipe 10 are intermittently opened and closed based on the liquid level signal. This effectively avoids electrical shocks and mechanical wear caused by frequent start-stop operations, extending the pump's service life and ensuring the system's immediate water supply response. Combined with the 4 kg working pressure environment within the storage tank 1, the entire oxygenation process operates stably under conditions of minimum energy consumption and maximum oxygenation efficiency, achieving a fully automatic, remotely controllable, and highly efficient oxygenation goal.

[0046] Application example:

[0047] In the aquaculture industry, high-density farming is becoming increasingly common. The dissolved oxygen content in the aquaculture water directly determines the growth rate, survival rate, and upper limit of farming density for aquatic products. Traditional aeration methods mostly use aeration discs or impeller aerators. While these devices can increase dissolved oxygen levels, they generally suffer from low oxygenation efficiency, high energy consumption, and the need for manual on-site monitoring for start-up and shutdown. Especially in large-scale aquaculture bases, where there are numerous and widely distributed ponds, relying on manual inspection and operation of aeration equipment not only consumes a lot of manpower but also poses significant risks. In the event of sudden weather changes (such as continuous rain or a sudden drop in air pressure) leading to rapid oxygen depletion in the water, the human response is often delayed, easily causing widespread oxygen depletion, fish surfacing, or even pond-wide fish deaths. Meanwhile, some farms have tried to introduce automated dissolved oxygenation equipment, but existing equipment often suffers from increased electrical failure rates due to frequent pump start-ups and shutdowns, or insufficient gas-liquid mixing, resulting in lower-than-expected dissolved oxygenation efficiency. Maintenance costs and electricity expenditures remain high. Therefore, there is an urgent need for a fully automatic dissolved oxygenator that can be remotely monitored and operated automatically, with water pumps that can work continuously without frequent start-stop, and which achieves high dissolved oxygen efficiency with low energy consumption through a high-efficiency gas-liquid mixing structure, in order to meet the development needs of modern aquaculture for large-scale, intelligent and energy-saving operations.

[0048] The operator first installs the fully automatic dissolved oxygenator in a suitable location next to the aquaculture pond, places the inlet end of the pumping pipe 17 into an external water source, connects the outlet end of the drain pipe 13 to the inlet of the aquaculture pond or the water distribution network, and reliably connects the external oxygen source to the oxygenation pipe 10 through pipelines. After the system is powered on, the controller in the control box 19 self-checks the signal status of the first and second liquid level sensors, and simultaneously reports equipment readiness information to the remote monitoring platform via the wireless communication module. The operator remotely sends a start command through a mobile application or computer monitoring platform. After receiving the command, the controller first controls the first water pump 15 to start running. The first water pump 15 continuously draws external water from the pumping pipe 17 and pressurizes and delivers the water to the inlet pipe 4; at the same time, the second water pump 16 is in standby mode, and its input end is kept connected to the pumping pipe 17. Once the controller detects an abnormality in the operation of the first water pump 15 through current detection, it automatically switches to start the second water pump 16 to take over the water delivery task, achieving redundancy protection.

[0049] After the first water pump 15 starts, water flows continuously into the top of the injection pipe 3 through the inlet pipe 4. After being diverted by multiple sets of annularly arranged inlet holes 5, the water flows downward along the inner wall of the injection pipe 3 and into the drainage trough 6. In the drainage trough 6, the narrow gap formed between the baffle 7 and the inner wall of the drainage trough 6 forces the water to pass through at high speed and is sheared and dispersed into fine water droplets or a mist-like water curtain, thereby significantly increasing the contact surface area between the water and the subsequently injected oxygen. The atomized water continues downward and enters the conical connecting trough 8. Since the larger opening of the conical connecting trough 8 is located at the top of the connecting pipe 2 and the smaller opening is located below the drainage trough 6, the water flow is further accelerated in the converging channel and forms a dense water curtain. During this process, the liquid level in the storage tank 1 is low during the initial operation of the system. The second liquid level sensor at the lower end of the external connecting pipe 18 detects that the liquid level has reached the preset lower limit threshold. The controller then controls the solenoid valve on the oxygen injection pipe 10 to open, and at the same time controls the valve on the drainage pipe 13 to open. Oxygen enters the oxygen injection hole 9 through the oxygen injection pipe 10, and then fills the annular oxygenation tank 11. From there, it diffuses and sprays out in a multi-directional annular manner through the oxygen injection channel 12, which extends from the surface of the oxygenation tank 11 to the inner wall of the connecting pipe 2. This oxygen comes into full gas-liquid contact with the atomized water curtain, which is accelerating downwards through the conical connecting channel 8, within the inner cavity of the connecting pipe 2. Oxygen molecules rapidly adhere to and dissolve on the large surface area of ​​the atomized water droplets, forming a water flow with a high dissolved oxygen concentration. Incompletely dissolved microbubbles enter the storage tank 1 along with the water flow. Hollow spheres pre-placed inside the storage tank 1 continuously tumble and agitate under the impact of the water flow, shearing and breaking up the remaining bubbles, further dissolving the oxygen in the water and completing the efficient oxygenation process. The tank maintains a working pressure of approximately 4 kg under a dynamic balance of continuous water inflow and outflow. Under this pressure condition, the oxygenation efficiency is optimal and the energy consumption is most economical. The fully oxygenated water is discharged through the drain pipe 13 at the bottom of the storage tank 1 and directly supplied to the aquaculture pond.

[0050] Once the real-time oxygen demand of the aquaculture pond is met and the dissolved oxygen in the pond water is continuously injected to raise the dissolved oxygen level to a safe level, the system continues to operate until the first liquid level sensor at the upper end of the external connecting pipe 18 detects that the liquid level in the storage tank 1 has reached the preset upper limit threshold. At this time, the controller issues a command to close the valve on the drain pipe 13 and simultaneously close the solenoid valve on the oxygen injection pipe 10, stopping the drainage and oxygen injection into the tank. In this state, the first water pump 15 (or the second water pump 16 that has been switched on) does not stop and continues to send water into the storage tank 1 through the inlet pipe 4, injection pipe 3, and connecting pipe 2. To prevent the system pressure from exceeding the limit, the overflow circuit set at the inlet pipe or storage tank 1 guides the excess water back to the water source or discharges it through the bypass, so that the tank pressure is always maintained within the safe design range, and the water pumps remain in continuous operation and standby. When the aquaculture pond water needs to be replenished with high dissolved oxygen water again due to natural oxygen depletion, operators can view the data from various sensors via a remote terminal. The controller will automatically open the valve on the drain pipe 13 and the solenoid valve on the oxygen injection pipe 10 based on the lower limit liquid level signal detected again by the second liquid level sensor, quickly restoring the water inlet dissolved oxygen and drainage process. In case of special emergencies, operators can also forcibly open and close the valve on the drain pipe 13 and the solenoid valve on the oxygen injection pipe 10 via the remote terminal, bypassing the automatic liquid level logic for manual intervention. Throughout the operation, the flow meter installed in the oxygen injection pipe 10 feeds back the oxygen flow data to the controller in real time, while the wireless communication module in the control box 19 uploads the liquid level data, water pump operating status, valve opening and closing status, and oxygen flow information to the remote monitoring platform, realizing 24 / 7 unattended automated operation and remote management. Through the above application methods, this dissolved oxygenator, without frequently starting and stopping the water pump, utilizes a highly efficient gas-liquid mixing structure combining atomized water curtain and annular oxygen injection to continuously and stably provide high dissolved oxygen water to the aquaculture water body, meeting the comprehensive needs of large-scale aquaculture for dissolved oxygen efficiency, equipment reliability, and remote intelligent control.

[0051] Working principle: After the system starts, the controller in the control box 19 controls the first water pump 15 to run continuously. The first water pump 15 draws water from an external water source through the water pipe 17 and pressurizes it to deliver it to the water inlet pipe 4. If the first water pump 15 fails, the controller will automatically switch to start the second water pump 16 to take over. The first water pump 15 and the second water pump 16 are always kept on during operation and do not participate in start-stop control. The water flows through the water inlet pipe 4 into the top of the injection pipe 3. The water is evenly distributed circumferentially through the multiple sets of annularly arranged water inlet holes 5 at the top of the injection pipe 3. The distributed water flows along the inner wall of the injection pipe 3 and flows into the drainage trough 6. Under the action of the narrow gap formed by the baffle 7 and the inner wall of the drainage trough 6, the water is forced to pass through and is sheared into fine water droplets or mist. The water curtain, thus significantly increasing the contact surface area between the water and the subsequently injected oxygen, continues to flow downwards into the conical connecting groove 8. The larger opening of the conical connecting groove 8 is located at the top of the connecting pipe 2, while the smaller opening is located below the drainage groove 6, forming a gradually narrowing channel from top to bottom. This causes the high-speed falling water curtain to further accelerate and contract densely as it passes through. At the same time, when the second liquid level sensor at the lower end of the external connecting pipe 18 detects that the liquid level in the storage tank 1 is at a preset lower threshold, the controller controls the solenoid valve on the oxygen injection pipe 10 to open. Oxygen supplied by the external oxygen source enters the oxygen injection hole 9 through the oxygen injection pipe 10 and fills the annular oxygen filling groove 11 opened on the inner wall of the connecting pipe 2. After the oxygen in the oxygen filling groove 11 is evenly distributed along the annular path, it passes through the surface of the oxygen filling groove 11. An oxygen injection tank 12, extending through the inner wall of the connecting pipe 2, injects oxygen into the inner cavity of the connecting pipe 2 in a multi-directional annular diffusion manner. This ensures sufficient gas-liquid contact with the water curtain that is accelerating downwards through the conical connecting tank 8. Oxygen molecules rapidly adhere to and dissolve on the surface of tiny water droplets, forming a water flow with a high dissolved oxygen concentration. Undissolved residual microbubbles enter the storage tank 1 along with the water flow. Hollow spheres are pre-placed inside the storage tank 1. The oxygen-containing mixed water flow impacts the hollow spheres, causing them to tumble and agitate. The microbubbles carried in the water flow are further broken up under the continuous collision and shearing action of the hollow spheres, promoting the continued dissolution of residual oxygen in the water for secondary oxygenation. The storage tank 1 maintains its designed working pressure through a dynamic balance of continuous water inflow and continuous water outflow. Under this pressure condition, gas-liquid dissolution... The efficiency of water dissolution is significantly improved and the energy consumption of the water pump is within the economic range. The fully dissolved oxygenated water is discharged to the outside through the drain pipe 13 at the bottom of the storage tank 1 to supply the aquaculture pond. When the drainage continues and the liquid level in the storage tank 1 rises to the preset upper limit threshold corresponding to the first liquid level sensor at the top of the external connecting pipe 18, the controller immediately controls the valve on the drain pipe 13 to close and at the same time controls the solenoid valve on the oxygen injection pipe 10 to close, stopping the drainage and oxygen injection into the tank. At this time, the first water pump 15 or the second water pump 16 continues to operate and deliver water to the inlet pipe 4. The overflow circuit or pressure regulating valve set at the inlet pipe or storage tank 1 guides the excess water back to the water source or discharges it through the bypass to maintain the tank pressure within the safe range. The system enters the water production pause standby state.When oxygen consumption in the aquaculture pond causes the liquid level in storage tank 1 to drop again to the preset lower threshold detected by the second liquid level sensor, the controller again controls the valve on drain pipe 13 to open and the solenoid valve on oxygen injection pipe 10 to open, restoring the complete cycle of water intake, oxygen injection, dissolved oxygen, and drainage. Throughout the system's operation, the flow meter installed in oxygen injection pipe 10 monitors the oxygen flow rate in real time and feeds it back to the controller. The wireless communication module in control box 19 uploads the liquid level signals collected by the first and second liquid level sensors, the operating status of the first and second water pumps 15 and 16, the opening and closing status of the valve on drain pipe 13 and the solenoid valve on oxygen injection pipe 10, and the oxygen flow rate data in oxygen injection pipe 10 to the remote monitoring platform in real time. Operators can view various parameters through a remote terminal and send control commands to the controller for manual intervention.

[0052] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A remotely controllable fully automatic dissolved oxygen generator, comprising a storage tank (1), characterized in that, The storage tank (1) is equipped with a connecting pipe (2) at the top, an injection pipe (3) is installed at the top of the connecting pipe (2), a water inlet pipe (4) is installed at the top of the injection pipe (3), the top of the injection pipe (3) has multiple sets of water inlet holes (5) arranged in a ring, the inner wall of the injection pipe (3) has a drainage groove (6) and the drainage groove (6) is located on one side of the water inlet hole (5), the inner wall of the drainage groove (6) is equipped with a baffle (7), a gap is formed between the baffle (7) and the inner wall of the drainage groove (6), the bottom end of the injection pipe (3) has a conical connecting groove (8), the larger opening of the conical connecting groove (8) is located at the top of the connecting pipe (2), and the smaller opening of the conical connecting groove (8) is located below the drainage groove (6); The surface of the connecting pipe (2) is provided with an oxygen injection hole (9), and an oxygen injection pipe (10) is inserted into the inner wall of the oxygen injection hole (9). A flow meter is provided on the inner wall of the oxygen injection pipe (10). An oxygen filling groove (11) with an annular design is provided on the inner wall of the connecting pipe (2), and the oxygen filling groove (11) is connected to the oxygen injection hole (9). An oxygen injection groove (12) is provided on the surface of the oxygen filling groove (11), and the oxygen injection groove (12) is connected to the inner wall of the connecting pipe (2).

2. The fully automatic dissolved oxygen generator capable of remote control according to claim 1, characterized in that, The storage tank (1) is equipped with a drain pipe (13) at the bottom and a fixed base (14) at the bottom. A first water pump (15) is installed on one side of the top of the fixed base (14) and a second water pump (16) is installed on the other side of the top of the fixed base (14). The first water pump (15) and the second water pump (16) are backups for each other.

3. The fully automatic dissolved oxygen generator capable of remote control according to claim 2, characterized in that, The input ends of the first water pump (15) and the second water pump (16) are both equipped with water pumping pipes (17), the inner wall of the drain pipe (13) is equipped with a valve, and the output ends of the first water pump (15) and the second water pump (16) are fixedly installed at the bottom end of the inlet pipe (4).

4. The fully automatic dissolved oxygen generator capable of remote control according to claim 1, characterized in that, A fixing ring is installed on the surface of the storage tank (1), and a control box (19) is installed on the surface of the fixing ring.

5. A remotely controllable fully automatic dissolved oxygen generator according to claim 4, characterized in that, The control box (19) is equipped with a wireless communication module.

6. A remotely controllable fully automatic dissolved oxygen generator according to claim 4, characterized in that, An electromagnetic valve is installed on the oxygen injection pipe (10), and the electromagnetic valve is electrically connected to the control box (19).

7. A remotely controllable fully automatic dissolved oxygen generator according to claim 4, characterized in that, The control box (19) is equipped with a controller. An external connecting pipe (18) is installed on the surface of the storage tank (1). A first liquid level sensor and a second liquid level sensor are installed at the upper and lower ends of the external connecting pipe (18), respectively. The controller is electrically connected to the first liquid level sensor, the second liquid level sensor and the solenoid valve installed on the oxygen injection pipe (10), respectively.

8. A remotely controllable fully automatic dissolved oxygen generator according to claim 7, characterized in that, The controller is configured to: control the valve to close when the first liquid level sensor detects that the liquid level has reached a preset upper limit threshold; and control the valve to open when the second liquid level sensor detects that the liquid level has reached a preset lower limit threshold.

9. A remotely controllable fully automatic dissolved oxygen generator according to claim 7, characterized in that, The controller is further configured to: control the solenoid valve to open when the second liquid level sensor detects that the liquid level has reached a preset lower threshold; and control the solenoid valve to close when the first liquid level sensor detects that the liquid level has reached a preset upper threshold.

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