An aeration method based on high-efficiency submersible jet aerator

Abstract

The application provides an aeration method based on a high-efficiency submerged jet flow aerator, which comprises the following steps: step 10, a water pump is operated, and fluid is flowed into a first nozzle; step 20, the fluid is flowed in the first nozzle, the speed is gradually increased, most of the fluid is sprayed into a mixing chamber through an outlet of the first nozzle, and a small amount of fluid is sprayed into the mixing chamber through a first aeration hole group; a negative pressure is formed in the mixing chamber, air above a liquid surface is sucked into the mixing chamber through an air inlet pipe, and the air is mixed with the fluid to form a steam-water mixture; step 30, the steam-water mixture in the mixing chamber is flowed into a second nozzle; step 40, the steam-water mixture is flowed in the second nozzle, the speed is gradually increased, and the steam-water mixture is sprayed into a throat pipe through an outlet of the second nozzle; and step 50, the steam-water mixture in the throat pipe is flowed into a water body through a diffusion pipe, and an oxygen transfer process is carried out. The aeration method based on the high-efficiency submerged jet flow aerator can increase the aeration amount into the mixing chamber and improve the oxygen dissolving efficiency.

Description

Technical Field

[0001] This invention belongs to the field of environmental protection technology, specifically, it relates to an aeration method based on a high-efficiency submersible jet aerator. Background Technology

[0002] In existing submersible jet aerators, the inlet of the mixing chamber is connected to a water pump, the air inlet pipe is located above the mixing chamber, the nozzle is located inside the mixing chamber, and the outlet of the mixing chamber is equipped with a throat and a diffuser. The high-pressure fluid generated by the water pump is accelerated through the nozzle, creating a partial vacuum in the mixing chamber, drawing air from above the liquid surface into the mixing chamber through the air inlet pipe to form a steam-water mixture. Inside the diffuser, the fluid velocity gradually decreases, and the hydrostatic pressure increases, allowing the steam-water mixture to enter the external water body for oxygen transfer. However, the aerator has relatively low aeration capacity and dissolved oxygen efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an aeration method based on a high-efficiency submersible jet aerator, which can increase the aeration volume entering the mixing chamber and improve dissolved oxygen efficiency.

[0004] To address the aforementioned technical problems, this invention provides an aeration method based on a high-efficiency submersible jet aerator. The aeration method employs a high-efficiency submersible jet aerator and includes the following steps:

[0005] Step 10: The water pump runs, and the generated fluid flows into the first nozzle through the flow channel of the base;

[0006] Step 20: The fluid flows from the inlet to the outlet in the first nozzle, and the speed gradually increases. Most of the fluid is sprayed into the mixing chamber through the outlet of the first nozzle, and a small part of the fluid is sprayed into the mixing chamber through the first aeration hole group in a direction parallel to the axis of the first nozzle. A negative pressure is formed in the mixing chamber, and the air above the liquid surface is drawn into the mixing chamber through the air inlet pipe and mixed with the fluid to form a steam-water mixture.

[0007] Step 30: The steam-water mixture in the mixing chamber flows into the second nozzle;

[0008] Step 40: The soda-water mixture flows from the inlet to the outlet in the second nozzle, and the speed gradually increases. It is then sprayed into the throat through the outlet of the second nozzle.

[0009] Step 50: The air-water mixture in the throat flows into the water body through the diffuser to carry out the oxygen transfer process.

[0010] As a further improvement to this embodiment of the invention, in step 20, a small portion of the fluid is injected into the mixing chamber through the first aeration hole group in a direction parallel to the axis of the first nozzle, specifically including:

[0011] The fluid injected from the first set of aeration holes, flowing parallel to the axis of the first nozzle, cuts through the downward-flowing air, making the bubbles smaller and denser. This allows more oxygen to be transferred into the water, forming the first sub-pre-steam-water mixture flowing towards the mixing chamber outlet. Simultaneously, the fluid injected from the first set of aeration holes accelerates the downward flow of air towards the mixing chamber outlet, allowing more air to enter the mixing chamber. The fluid injected from the second set of aeration holes, flowing parallel to the axis of the first nozzle, has a higher velocity than the fluid injected from the first set of aeration holes. This cuts through the first sub-pre-steam-water mixture flowing towards the mixing chamber outlet, further increasing oxygen transfer efficiency and forming the second sub-pre-steam-water mixture. The liquid flows towards the outlet of the mixing chamber; simultaneously, the fluid sprayed by the second group of first aeration holes further accelerates the downward flow of air towards the outlet of the mixing chamber, allowing more air to enter the mixing chamber; subsequently, the fluid sprayed by the second group of first aeration holes, flowing parallel to the axis of the first nozzle, continuously cuts the pre-air-water mixture formed by the fluid sprayed by the first group of first aeration holes, making the bubbles smaller and denser, continuously transferring more oxygen into the water, and continuously improving the oxygen transfer efficiency, creating conditions for the subsequent formation of even smaller and denser water droplets and bubbles; on the other hand, it further accelerates the downward flow of air towards the outlet of the mixing chamber, allowing more air to enter the mixing chamber and increasing the aeration rate.

[0012] As a further improvement of this embodiment of the invention, in step 30, most of the steam-water mixture in the mixing chamber flows into the second nozzle, and a small portion is sprayed into the throat tube through the third aeration hole; in step 40, most of the steam-water mixture in the second nozzle is sprayed into the throat tube through the outlet of the second nozzle, and a small portion is sprayed into the throat tube through the second aeration hole group.

[0013] As a further improvement to this embodiment of the invention, in step 40, the steam-water mixture sprayed from the first group of second aeration holes in different directions around the second nozzle and flowing in a direction perpendicular to the conical surface of the second nozzle cuts and collides with the steam-water mixture sprayed from the third aeration hole in a direction parallel to the axis of the second nozzle, making the water droplets and bubbles smaller and denser, forming a first steam-water mixture; part of the first steam-water mixture continues to flow in a direction parallel to the axis of the second nozzle towards the throat outlet, and another part of the first steam-water mixture flows towards the throat outlet along the inner wall of the throat. The cutting grooves on the inner wall of the throat further cut the first carbonated water mixture. The cut first carbonated water mixture, reflected by the inner wall of the throat, forms the first reflected carbonated water mixture, which flows towards the throat outlet along the throat axis. The second set of second aeration holes sprays carbonated water mixture flowing perpendicular to the cone surface of the second nozzle in different directions around the second nozzle. This mixture cuts and collides with the first carbonated water mixture flowing parallel to the second nozzle axis towards the throat outlet, as well as the first reflected carbonated water mixture, making the water droplets and bubbles smaller and denser, forming the second carbonated water mixture. Liquid; a portion of the second steam-water mixture continues to flow parallel to the axis of the second nozzle towards the throat outlet, while another portion flows towards the throat outlet along the inner wall of the throat. The cutting groove on the inner wall of the throat further cuts the second steam-water mixture, and the cut second steam-water mixture is reflected by the inner wall of the throat to form a second reflected steam-water mixture that flows towards the throat outlet along the throat axis. Sequentially, the steam-water mixture sprayed from the second aeration hole group in different directions around the second nozzle circumference, flowing perpendicular to the cone surface of the second nozzle, interacts with the steam-water mixture formed by the previous group parallel to the axis of the second nozzle. The water-air mixture flowing from the second nozzle axis toward the throat outlet and the reflected water-air mixture cut and collide with each other, making the water droplets and bubbles smaller and denser, forming a new water-air mixture. Part of the new water-air mixture continues to flow parallel to the second nozzle axis toward the throat outlet, while another part flows toward the throat outlet along the inner wall of the throat. The cutting grooves on the inner wall of the throat cut the new water-air mixture again. The cut new water-air mixture is reflected by the inner wall of the throat to form a new reflected water-air mixture that flows toward the throat outlet along the throat axis.

[0014] As a further improvement of the present invention, in step 40, the reflected steam-water mixture after multiple cutting and mixing is mixed and cut with the steam-water mixture sprayed from the second nozzle outlet along the throat axial direction, which once again makes the water droplets and bubbles smaller and denser, further improving the dissolved oxygen efficiency.

[0015] As a further improvement of this embodiment of the invention, in step 50, the flowing steam-water mixture is sprayed onto the cutting body, which cuts the steam-water mixture into smaller and finer droplets and bubbles, dissolving more oxygen in the water; at the same time, the flow velocity of the steam-water mixture in the throat gradually decreases, converting velocity energy into static pressure energy, and the steam-water mixture flows smoothly into the water body through the diffuser to carry out the oxygen transfer process.

[0016] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0017] (1) The aeration method based on a high-efficiency submersible jet aerator provided by the present invention, by setting a first aeration hole with the center line parallel to the axis of the first nozzle on the first nozzle in the mixing chamber, intensely cuts the air flowing from the mixing chamber into the mixing chamber towards the mixing chamber outlet towards the mixing chamber axis, making the bubbles smaller and denser for the first time, so that more oxygen is transferred to the water, creating conditions for the subsequent formation of even smaller and denser water droplets and bubbles; at the same time, it accelerates the flow speed of air towards the mixing chamber outlet towards the mixing chamber axis, so that more air enters the mixing chamber, increasing the aeration volume and improving the dissolved oxygen efficiency.

[0018] (2) The aeration method based on a high-efficiency submersible jet aerator provided by the present invention involves setting a second nozzle at the inlet of the throat tube, setting a second aeration hole on the second nozzle with its center line perpendicular to the cone surface of the second nozzle, setting a third aeration hole on the connecting wall between the throat tube and the mixing chamber, setting a cutting groove on the inner wall of the throat tube, and setting a cutting body at the end of the throat tube. The air-water mixture formed in the mixing chamber is sprayed into the throat tube through the second nozzle, the second aeration hole, and the third aeration hole, so that multiple air-water mixtures with different directions and speeds cut each other, making the water droplets and bubbles smaller and denser, thereby improving the dissolved oxygen efficiency. The high-speed air-water mixture after mixing acts on the cutting body, further making the air-water mixture smaller and denser, increasing the contact area of ​​the air-water mixture, increasing the dissolved oxygen content, and improving the dissolved oxygen efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the high-efficiency submersible jet aerator in the method of the present invention;

[0020] Figure 2 yes Figure 1 Schematic diagram of the middle base;

[0021] Figure 3 yes Figure 1 A schematic diagram illustrating the effect of the steam-water mixture cutting and mixing with each other inside the throat tube.

[0022] The diagram includes: water pump 1, base 2, flow channel 21, inlet section 211, intermediate section 212, outlet section 213, first nozzle 3, first aeration hole 31, mixing chamber 4, third aeration hole 41, second nozzle 5, second aeration hole 51, throat 6, cutting groove 61, cutting body 7, diffuser 8, air inlet pipe 9, and mounting assembly 10. Detailed Implementation

[0023] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] This invention provides an aeration method using a high-efficiency submersible jet aerator. For example... Figure 1 As shown, the high-efficiency submersible jet aerator includes a water pump 1, a base 2, a mixing chamber 4, a throat 6, and a diffuser 8 connected in sequence, as well as an air inlet pipe 9 and an installation assembly 10. The base 2 is installed at the bottom of the pool, and the lower end of the installation assembly 10 is connected to the base 2. The base 2 has a flow channel 21 extending through both ends. The mixing chamber 4 has a first nozzle 3 installed at the connection between the mixing chamber and the base. The outlet of the water pump 1 is connected to the inlet of the flow channel 21, and the outlet of the flow channel is connected to the inlet of the first nozzle 3. The throat 6 is a straight pipe. The air inlet pipe 9 is located above the mixing chamber 4, with its outlet connected to the mixing chamber 4 and its inlet located above the liquid surface.

[0025] The first nozzle 3 is conical in shape, with a conical inner cavity, and its inlet cross-sectional area is larger than its outlet cross-sectional area. An appropriate distance is maintained between the outlet end of the first nozzle 3 and the outlet of the mixing chamber 4 to ensure the complete formation and discharge of the steam-water mixture. Multiple sets of first aeration holes are arranged on the upper half of the sidewall of the first nozzle 3 (i.e., the sidewall above the horizontal plane containing its axis), with 3 to 10 sets of first aeration holes spaced apart along the axial direction of the first nozzle 3. Each set of first aeration holes includes multiple first aeration holes 31 spaced apart along the circumference of the first nozzle. The centerline of each first aeration hole 31 is parallel to the axis of the first nozzle 3. The diameter of the first aeration holes is 0.5 to 3 mm.

[0026] The high-pressure fluid generated by pump 1 enters the inner cavity of the first nozzle 3 through the flow channel 21 of the base 2. As the diameter of the nozzle cavity gradually decreases from the inlet to the outlet, and the cross-sectional area gradually decreases, the flow velocity of the fluid in the first nozzle 3 gradually increases. Most of the fluid in the first nozzle is ejected at high speed into the mixing chamber 4 through the outlet. A negative pressure is generated in the mixing chamber 4, and the air above the liquid surface enters the mixing chamber 4 through the air inlet pipe 9 and moves downward towards the outlet of the mixing chamber, mixing with the water to form a pre-steamed water mixture. A small portion of the fluid in the first nozzle is ejected at high speed horizontally forward through the first aeration holes, above the horizontal plane where the axis of the first nozzle is located, along the edge of the semi-circular surface perpendicular to the axis, distributed at intervals along the axis. Specifically, along the direction from the inlet to the outlet of the first nozzle, there are N groups of first aeration holes, namely the first group of first aeration holes, the second group of first aeration holes, ..., the Nth group of first aeration holes. When the fluid in the first nozzle 3 flows forward at high speed from the first aeration hole 31, the fluid sprayed by the first group of first aeration holes violently cuts the air flowing downwards towards the mixing chamber outlet, making the bubbles smaller and denser, allowing more oxygen to be transferred into the water, forming the first sub-pre-steamed water mixture that flows towards the mixing chamber outlet. Simultaneously, the fluid sprayed by the first group of first aeration holes accelerates the downward flow of air towards the mixing chamber outlet, allowing more air to enter the mixing chamber. The fluid generated by the second group of first aeration holes has a higher velocity than the fluid sprayed by the first group of first aeration holes, further enhancing the cutting of the first sub-pre-steamed water mixture, further improving oxygen transfer efficiency, forming the second sub-pre-steamed water mixture, which then continues to flow towards the mixing chamber outlet. Secondly, the speed of air flow towards the mixing chamber outlet is accelerated, allowing more air to enter the mixing chamber. The fluid injected from the third group of first aeration holes has a higher speed than that injected from the second group of first aeration holes, which strengthens the cutting of the second sub-pre-steam-water mixture, further improving the oxygen transfer efficiency. After forming the third sub-pre-steam-water mixture, it continues to flow towards the mixing chamber outlet, once again accelerating the speed of air flow towards the mixing chamber outlet, allowing more air to enter the mixing chamber;... Accordingly, the fluid injected from the subsequent group of first aeration holes continuously cuts the sub-pre-steam-water mixture formed by the fluid injected from the previous group of first aeration holes, making the bubbles smaller and denser, continuously transferring more oxygen to the water, and continuously increasing the amount of air entering the mixing chamber and the oxygen transfer efficiency, creating conditions for the subsequent formation of even smaller and denser water droplets and bubbles; on the other hand, it further accelerates the speed of air flow downward towards the mixing chamber outlet, allowing more air to enter the mixing chamber 4, increasing the aeration rate.

[0027] Preferably, a cutting body 7 is provided inside the throat 6, and the cutting body 7 is located at the end of the throat 6. The distance between the cutting body 7 and the outlet end of the second nozzle 7 is greater than or equal to 200 mm.

[0028] Preferably, a second nozzle 5 is provided inside the throat 6, and the second nozzle 5 is installed at the connection between the throat 6 and the mixing chamber 4. The outlet of the mixing chamber 4 is connected to the inlet of the second nozzle 5. The second nozzle 5 is conical in shape, and its inner cavity is also conical. The inlet cross-sectional area of ​​the second nozzle 5 is larger than its outlet cross-sectional area. Preferably, the first nozzle 3, the second nozzle 5, and the throat 6 are all coaxially arranged. The diameter of the throat 6 is more than twice the diameter of the large end of the second nozzle 5.

[0029] The pre-steam-water mixture in mixing chamber 4 enters the inner cavity of the second nozzle 5. As the cross-section of the second nozzle gradually decreases, the velocity of the steam-water mixture continuously increases, flowing out of the second nozzle at high speed into the throat 6. The high-speed steam-water mixture ejected from the second nozzle 5 is sprayed onto the cutting body 7. As the steam-water mixture flows towards the outlet of the throat 6, the cutting body cuts the mixture, breaking the water droplets and bubbles into finer particles, dissolving more oxygen in the water. Moreover, due to the cutting action of the cutting body, the flow velocity of the steam-water mixture in the throat gradually decreases, converting velocity energy into static pressure energy, allowing the steam-water mixture to flow smoothly and rapidly into the water body for oxygen transfer.

[0030] A second nozzle 5 is installed inside the throat 6 to improve the mixing speed and effect of the air-water mixture in the throat 6; to increase the flow velocity of the air-water mixture formed in the second nozzle, thereby enhancing the cutting effect of the air-water mixture; and to prevent the fluid velocity generated by the cutting body in the throat from being excessively reduced and unable to flow into the water body. A cutting body is installed inside the throat to cut the high-speed flowing air-water mixture, breaking water droplets and bubbles into fine particles, allowing more oxygen to dissolve in the water. Because the cutting body cuts the air-water mixture, its velocity decreases, balancing the fluid acceleration of the second nozzle, increasing the static pressure energy of the air-water mixture, and allowing it to smoothly enter the water body for oxygen transfer.

[0031] Preferably, the sidewall of the second nozzle 5 is provided with multiple sets of second aeration holes, with 3 to 10 sets of second aeration holes spaced apart along the axial direction of the second nozzle 5. Each set of second aeration holes includes multiple second aeration holes 51 spaced apart along the circumference of the second nozzle. The centerline of the second aeration hole 51 is perpendicular to the conical surface of the second nozzle 5. The diameter of the second aeration hole 51 is 0.5 to 3 mm. Several third aeration holes 41 are provided on the connecting wall between the throat 6 and the mixing chamber 4. The third aeration holes 41 connect the mixing chamber 4 and the throat 6, and the diameter of the third aeration holes is 0.5 to 3 mm. The inner wall of the throat 6 is provided with a cutting groove 61, which is a spiral groove. One end of the cutting groove is flush with the end of the throat connecting to the mixing chamber, and the other end of the cutting groove is flush with the end of the cutting body 7.

[0032] like Figure 3As shown, a small portion of the steam-water mixture in the mixing chamber 4 is sprayed at high speed into the throat tube 6 through the third aeration hole 41. The spray direction of this portion of the steam-water mixture is parallel to the axis of the second nozzle 5. The majority of the steam-water mixture enters the second nozzle 5, where it gradually accelerates. A small portion of the accelerated steam-water mixture in the inner cavity of the second nozzle is sprayed at high speed from the second aeration hole 51. The spray direction of this portion is perpendicular to the conical surface of the second nozzle, i.e., towards the outlet of the second nozzle and towards the inner wall of the throat tube. The spray directions of the steam-water mixture from the third aeration hole 41 intersect with those from the second aeration hole 51, causing the two streams of steam-water mixture to cut each other, making the water droplets and bubbles smaller and denser, thus improving oxygen transfer efficiency. Along the direction from the inlet to the outlet of the second nozzle, the M groups of second aeration holes are respectively the first group of second aeration holes, the second group of second aeration holes, ..., the Mth group of second aeration holes. The first group of second aeration holes sprays the accelerated air-water mixture in different circumferential directions. This mixture, along with the air-water mixture sprayed from the third aeration hole 41 along the axis parallel to the second nozzle, undergoes intense cutting on the outer ring of the second nozzle, forming a first air-water mixture. This results in smaller and denser water droplets and bubbles, transferring more oxygen to the water. Because the air-water mixture sprayed from the second aeration hole has a higher velocity than that from the third aeration hole, part of the synthesized first air-water mixture continues to flow towards the outlet of the second nozzle, while the other part flows towards the inner wall of the throat. When the first air-water mixture reaches the cutting groove 61 on the inner wall of the throat, the cutting groove 61 performs the first cutting, making the first air-water mixture even finer and denser, thus improving its oxygen transfer efficiency. Simultaneously, the mixed air-water mixture is reflected by the inner wall of the throat to form a first reflective air-water mixture, which flows towards the throat outlet along the throat axis. The second group of second aeration holes sprays the continuously accelerated air-water mixture from the second nozzle in different circumferential directions. On one hand, it cuts the first air-water mixture flowing towards the outlet of the second nozzle. Due to the increased speed of the air-water mixture sprayed from the second group of second aeration holes, the cutting effect is greater than that of the first group of second aeration holes, making the water droplets and bubbles even smaller and denser, allowing more oxygen to be transferred into the water. On the other hand, it mixes and cuts with the first reflected air-water mixture, further making the water droplets and bubbles even smaller and denser. The three streams of air-water mixture mix and cut at the outer ring of the second nozzle, forming a second air-water mixture, which enhances the cutting and mixing effect, continuously changes the radial position of the bubbles, and further improves the oxygen transfer path and oxygen transfer efficiency. Furthermore, as the outer diameter of the second nozzle gradually decreases (the space between the outer wall of the second nozzle and the inner wall of the throat gradually increases), the radial position of the bubbles is continuously changed, improving the oxygen transfer path and oxygen dissolution efficiency. At the same time, the cutting and mixing of air-water mixtures in different circumferential directions in the throat also continuously changes the bubble position, enhancing the circumferential oxygen dissolution effect.The synthesized second gas-water mixture continues to flow partly towards the outlet of the second nozzle and partly towards the inner wall of the throat. When the second gas-water mixture reaches the cutting groove 61 on the inner wall of the throat, it undergoes a second cutting, continuously improving the oxygen transfer efficiency, and forming a second reflective gas-water mixture under the reflection of the throat wall. In this manner, the continuously accelerated gas-water mixture from the second nozzle is sprayed through the third group of second aeration holes, ..., the Mth group of second aeration holes, forming a third reflective gas-water mixture, ..., the Mth reflective gas-water mixture, continuously enhancing the cutting effect. Most of the accelerated gas-water mixture in the inner cavity of the second nozzle is sprayed axially into the throat from the outlet of the second nozzle. The formed reflective gas-water mixture mixes and cuts with the gas-water mixture sprayed axially from the outlet of the second nozzle, further making the water droplets and bubbles smaller and denser, further improving the dissolved oxygen efficiency.

[0033] Preferred, such as Figure 2 As shown, the flow channel 21 includes an inlet section 211, a middle section 212, and an outlet section 213, which are smoothly connected in sequence. The inlet and outlet sections are horizontally arranged, with the axis of the inlet section located above the axis of the outlet section, and the middle section is an arc segment. The high-speed fluid from the water pump 1 enters the flow channel 21 of the base 2, passes through the flow channel 21 stably and smoothly, and enters the first nozzle 3, thereby producing a stable and continuous aeration effect, effectively reducing uneven aeration, while also reducing noise and vibration, ensuring the efficient operation of the submersible aerator.

[0034] Preferably, the inlet cross-sectional area of ​​the second nozzle 5 is 1 to 1.3 times the outlet cross-sectional area of ​​the first nozzle 3. The outlet cross-sectional area of ​​the second nozzle 5 is 0.7 to 1 times the outlet cross-sectional area of ​​the first nozzle 3. This arrangement is to increase the outlet fluid velocity of the second nozzle.

[0035] The working process of the high-efficiency submersible jet aerator in the above embodiment is as follows:

[0036] The high-pressure fluid generated by the pump 1 enters the flow channel 21 of the base 2. The fluid flows stably and smoothly within the flow channel 21, effectively mitigating fluid unevenness and impact. It then smoothly enters the inner cavity of the first nozzle 3 in the mixing chamber 4. As the cross-sectional area of ​​the first nozzle 3 gradually decreases, the fluid velocity within the first nozzle 3 gradually increases. Most of the fluid is injected at high speed from the outlet of the first nozzle 3 into the mixing chamber 4, creating a negative pressure. External air is drawn into the mixing chamber 4 through the air inlet pipe 9, mixing with the high-speed fluid to form a water-air mixture. This produces a stable and continuous aeration effect, effectively reducing uneven aeration, while also reducing noise and vibration, ensuring the efficient operation of the submersible aerator.

[0037] A small portion of the fluid in the first nozzle 3 is ejected at high speed through the first aeration holes 31 in a direction parallel to the axis of the first nozzle. The fluid ejected by the first group of first aeration holes violently cuts the downward-flowing air, making the bubbles smaller and denser, allowing more oxygen to be transferred to the water, forming the first sub-pre-steam-water mixture that flows towards the outlet of the mixing chamber. At the same time, the fluid ejected by the first group of first aeration holes accelerates the downward flow of air towards the outlet of the mixing chamber, allowing more air to enter the mixing chamber. The fluid ejected by the second group of first aeration holes has a higher velocity than that of the fluid ejected by the first group of first aeration holes, further enhancing the cutting of the first sub-pre-steam-water mixture, increasing the oxygen transfer efficiency again, and forming the second sub-pre-steam-water mixture, which then continues to flow towards the outlet of the mixing chamber. Secondly, the increased air velocity towards the outlet allows more air to enter the mixing chamber. The fluid ejected from the third group of first aeration holes has a higher velocity than that from the second group of first aeration holes, strengthening the cutting of the second sub-pre-steam-water mixture and further improving oxygen transfer efficiency. After forming the third sub-pre-steam-water mixture, it continues to flow towards the mixing chamber outlet, once again accelerating the air velocity towards the outlet and allowing more air to enter the mixing chamber. Thus, the fluid ejected from the subsequent group of first aeration holes continuously cuts the sub-pre-steam-water mixture formed by the fluid ejected from the previous group of first aeration holes, making the bubbles smaller and denser, continuously transferring more oxygen to the water, and continuously increasing the amount of air entering the mixing chamber and the oxygen transfer efficiency, creating conditions for the subsequent formation of even smaller and denser water droplets and bubbles. On the other hand, it further accelerates the downward flow of air towards the mixing chamber outlet, allowing more air to enter the mixing chamber and increasing the aeration rate.

[0038] A small portion of the carbonated water mixture in mixing chamber 4 enters the throat tube 6 horizontally through the third aeration hole 41 and is located on the outer ring of the second nozzle 5. Most of the carbonated water mixture enters the inner cavity of the second nozzle 5. As the cross-section of the inner cavity of the second nozzle gradually decreases, the velocity of the carbonated water mixture continuously increases in the axial direction. A small portion of the carbonated water mixture in the inner cavity of the second nozzle 5 is ejected outward and forward at high speed from the second aeration hole 51, cutting and colliding with the carbonated water mixture ejected horizontally from the third aeration hole 41. This causes the water droplets and bubbles to become smaller and denser, forming a new carbonated water mixture and continuously improving dissolved oxygen efficiency. Due to the high velocity of the carbonated water mixture ejected from the second aeration hole, the newly formed carbonated water mixture flows rapidly towards the inner wall (outward) of the throat tube 6 due to inertia. The cutting groove further cuts the carbonated water mixture, and the cut carbonated water mixture, after being reflected by the throat tube 6, flows towards the throat tube outlet in the axial direction of the throat tube. At this point, the air-water mixtures in different circumferential directions mix and cut each other, making the water droplets and bubbles smaller and denser, further improving the oxygen transfer efficiency. Meanwhile, most of the air-water mixture in the inner cavity of the second nozzle 5 flows horizontally at high speed out of the second nozzle outlet and into the throat 6. After multiple cuts and mixes, the reflected air-water mixture mixes and cuts with the air-water mixture sprayed axially from the second nozzle, once again making the water droplets and bubbles smaller and denser, further improving the dissolved oxygen efficiency. The air-water mixture is sprayed at high speed onto the cutting body 7, which cuts the air-water mixture, making the water droplets and bubbles even smaller and denser, dissolving more oxygen in the water. Due to the cutting action of the cutting body 7, the flow velocity of the air-water mixture in the throat gradually decreases, converting velocity energy into static pressure energy, allowing the air-water mixture to flow smoothly and rapidly into the water body through the diffuser 8 for the oxygen transfer process.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the specific embodiments described above. The specific embodiments and descriptions in the specification are merely for further illustrating the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. An aeration method based on a high-efficiency submersible jet aerator, characterized in that, A high-efficiency submersible jet aerator is adopted. The high-efficiency submersible jet aerator includes a water pump (1), a base (2), a mixing chamber (4), a throat pipe (6), and a diffuser pipe (8) connected in sequence, as well as an air inlet pipe (9) and an installation assembly (10). The base (2) is installed at the bottom of the pool, and the lower end of the installation assembly (10) is connected to the base (2). The base (2) is provided with a flow channel (21) that runs through the left and right ends of the base. The mixing chamber (4) is provided with a first nozzle (3), which is installed at the connection between the mixing chamber and the base. The water pump (1) The outlet of the flow channel (21) is connected to the inlet of the flow channel (21), and the outlet of the flow channel is connected to the inlet of the first nozzle (3); the throat (6) is a straight pipe; the air inlet pipe (9) is located above the mixing chamber (4), the outlet of the air inlet pipe (9) is connected to the mixing chamber (4), and the inlet of the air inlet pipe is located above the liquid surface; a second nozzle (5) is provided inside the throat (6), and the second nozzle (5) is installed at the connection between the throat (6) and the mixing chamber (4), and the outlet of the mixing chamber (4) is connected to the inlet of the second nozzle (5); the first nozzle (3) is round in shape. The first nozzle (3) is conical in shape, and its inner cavity is also conical. The inlet cross-sectional area of ​​the first nozzle (3) is larger than its outlet cross-sectional area. Multiple sets of first aeration holes are arranged on the upper half of the side wall of the first nozzle (3). 3 to 10 sets of first aeration holes are arranged at intervals along the axial direction of the first nozzle (3). Each set of first aeration holes includes multiple first aeration holes (31) arranged at intervals along the circumference of the first nozzle. The center line of the first aeration hole (31) is parallel to the axis of the first nozzle (3). The second nozzle (5) is conical in shape and has a conical inner cavity. The inlet cross-sectional area is larger than the outlet cross-sectional area; the side wall of the second nozzle (5) is provided with multiple sets of second aeration holes, and 3 to 10 sets of second aeration holes are arranged at intervals along the axial direction of the second nozzle (5); each set of second aeration holes includes multiple second aeration holes (51) arranged at intervals along the circumference of the second nozzle; the center line of the second aeration hole (51) is perpendicular to the conical surface of the second nozzle 5; several third aeration holes (41) are provided on the connecting wall between the throat (6) and the mixing chamber (4), and the third aeration holes (41) connect the mixing chamber (4) and the throat (6). The aeration method includes the following steps: Step 10: The water pump (1) is running, and the generated fluid flows into the first nozzle (3) through the flow channel (21) of the base (2). In step 20, the fluid flows from the inlet to the outlet in the first nozzle (3), and the speed gradually increases. Most of the fluid is sprayed into the mixing chamber (4) through the outlet of the first nozzle (3), and a small part of the fluid is sprayed into the mixing chamber (4) through the first aeration hole group along the direction parallel to the axis of the first nozzle (3). A negative pressure is formed in the mixing chamber (4), and the air above the liquid surface is drawn into the mixing chamber (4) through the air inlet pipe (9) and mixed with the fluid to form a steam-water mixture. Step 30: The steam-water mixture in the mixing chamber (4) flows into the second nozzle (5); Step 40: The soda-water mixture flows from the inlet to the outlet in the second nozzle (5), and the speed gradually increases. It is then sprayed into the throat (6) through the outlet of the second nozzle (5). Step 50: The steam-water mixture in the throat (6) flows into the water body through the diffuser (8) to carry out the oxygen transfer process; In step 30, most of the steam-water mixture in the mixing chamber (4) flows into the second nozzle (5), and a small portion is sprayed into the throat tube (6) through the third aeration hole (41); in step 40, most of the steam-water mixture in the second nozzle (5) is sprayed into the throat tube (6) through the outlet of the second nozzle (5), and a small portion is sprayed into the throat tube (6) through the second aeration hole group.

2. The aeration method according to claim 1, characterized in that, In step 20, a small portion of the fluid is injected into the mixing chamber (4) through the first aeration hole group in a direction parallel to the axis of the first nozzle (3), specifically including: The fluid injected from the first aeration hole group of the first group, flowing parallel to the axis of the first nozzle (3), cuts the downward-flowing air, making the bubbles smaller and denser, allowing more oxygen to be transferred to the water, forming the first sub-pre-steam-water mixture flowing towards the outlet of the mixing chamber; at the same time, the fluid injected from the first aeration hole group of the first group accelerates the downward flow of air towards the outlet of the mixing chamber, allowing more air to enter the mixing chamber; the fluid injected from the second aeration hole group of the first group, flowing parallel to the axis of the first nozzle (3), has a greater speed than the fluid injected from the first aeration hole group of the first group, cutting the first sub-pre-steam-water mixture flowing towards the outlet of the mixing chamber, further improving the oxygen transfer efficiency, forming the second sub-pre-steam-water mixture. The liquid flows towards the outlet of the mixing chamber; at the same time, the fluid sprayed by the first aeration hole group of the second group accelerates the speed of the air flowing downward towards the outlet of the mixing chamber, allowing more air to enter the mixing chamber; in turn, the fluid sprayed by the first aeration hole group of the second group flows in a direction parallel to the axis of the first nozzle (3), on the one hand, continuously cuts the pre-air-water mixture formed by the fluid sprayed by the first aeration hole group of the first group, making the bubbles smaller and denser, continuously transferring more oxygen to the water, continuously improving the oxygen transfer efficiency, and creating conditions for the subsequent formation of smaller and denser water droplets and bubbles; on the other hand, it further accelerates the speed of the air flowing downward towards the outlet of the mixing chamber, so that more air enters the mixing chamber (4) and increases the aeration rate.

3. The aeration method according to claim 1, characterized in that, In step 40, the steam-water mixture sprayed from the first group of second aeration holes in different directions around the second nozzle, flowing perpendicular to the cone surface of the second nozzle, cuts and collides with the steam-water mixture sprayed from the third aeration hole (41) in a direction parallel to the axis of the second nozzle, making the water droplets and bubbles smaller and denser, forming the first steam-water mixture; part of the first steam-water mixture continues to flow in a direction parallel to the axis of the second nozzle towards the outlet of the throat tube, and another part of the first steam-water mixture flows towards the outlet of the throat tube along the inner wall of the throat tube. The cutting groove on the inner wall of the throat tube (6) cuts and collides with the second aeration hole (41) in a direction parallel to the axis of the second nozzle, making the water droplets and bubbles smaller and denser, forming the first steam-water mixture; part of the first steam-water mixture continues to flow in a direction parallel to the axis of the second nozzle towards the outlet of the throat tube, and another part of the first steam-water mixture flows towards the outlet of the throat tube along the inner wall of the throat tube. The first carbonated water mixture is cut again, and the cut first carbonated water mixture is reflected by the inner wall of the throat tube (6) to form the first reflected carbonated water mixture, which flows towards the throat tube axis and the throat tube outlet; the second group of second aeration holes sprays carbonated water mixture flowing in a direction perpendicular to the cone surface of the second nozzle in different directions around the second nozzle, cuts and collides with the first carbonated water mixture flowing in a direction parallel to the second nozzle axis and towards the throat tube outlet, as well as the first reflected carbonated water mixture, making the water droplets and bubbles smaller and denser, forming the second carbonated water mixture; part of the second carbonated water mixture The mixture continues to flow parallel to the axis of the second nozzle towards the throat outlet, while another portion of the second steam-water mixture flows towards the throat outlet along the inner wall of the throat. The cutting groove on the inner wall of the throat (6) cuts the second steam-water mixture again. The cut second steam-water mixture is reflected by the inner wall of the throat (6) to form a second reflected steam-water mixture that flows towards the throat outlet along the throat axis. In sequence, the steam-water mixture sprayed from the second aeration hole group in different directions around the second nozzle and flowing perpendicular to the cone surface of the second nozzle, together with the steam-water mixture formed by the first group parallel to the axis of the second nozzle, flows towards the throat outlet. The water-air mixture flowing in the linear direction toward the throat outlet and the reflected water-air mixture cut and collide with each other, making the water droplets and bubbles smaller and denser, forming a new water-air mixture; part of the new water-air mixture continues to flow in the direction parallel to the axis of the second nozzle toward the throat outlet, and another part of the new water-air mixture flows toward the inner wall of the throat toward the throat outlet. The cutting groove on the inner wall of the throat (6) cuts the new water-air mixture again. The new water-air mixture after being cut is reflected by the inner wall of the throat (6) to form a new reflected water-air mixture that flows toward the throat axis toward the throat outlet.

4. The aeration method according to claim 3, characterized in that, In step 40, the reflected steam-water mixture after multiple cutting and mixing is mixed and cut with the steam-water mixture sprayed from the second nozzle outlet along the throat axis, making the water droplets and bubbles even smaller and denser, further improving the dissolved oxygen efficiency.

5. The aeration method according to claim 1, characterized in that, In step 50, the flowing steam-water mixture is sprayed onto the cutting body (7), which cuts the steam-water mixture, making the water droplets and bubbles smaller and finer, and dissolving more oxygen in the water. At the same time, the flow rate of the steam-water mixture in the throat gradually decreases, converting velocity energy into static pressure energy. The steam-water mixture flows smoothly into the water body through the diffuser (8) to carry out the oxygen transfer process.

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