A high-efficiency nano-aeration device

Abstract

The present invention discloses a high-efficiency nano-aeration device, which solves the problem that the aeration effect of the current river aeration equipment is not ideal. The key points of its technical solution are a high-efficiency river aeration device, including a mounting stand, an aeration device arranged on the mounting stand, and an air supply device for supplying air to the aeration device; the aeration device includes an aeration cylinder, a submersible motor, a dispersion disk, a wind shear assembly, a rotating impeller, and a water shear assembly; the output shaft of the submersible motor is sequentially provided with a coaxially rotating wind shear assembly, a rotating impeller, and a water shear assembly in a direction away from the dispersion disk; the aeration cylinder is also provided with an air supply joint connected to the air supply device, the aeration cylinder is evenly provided with air outlets, and the aeration cylinder has a water inlet. The high-efficiency nano-aeration device produces oxygen-containing bubbles with a small volume, a large number of bubbles, and a high generation efficiency, and has an ideal oxygenation effect on the water body.

Description

Technical Field

[0001] The invention relates to aeration equipment, in particular to high-efficiency nano aeration equipment. Background Art

[0002] The oxygen content in the river water will directly affect the water quality. Especially when the oxygen content in the river water is too low, it will cause a large number of anaerobic microorganisms to multiply, causing the water quality of the river to deteriorate, the river water to stink, etc. Therefore, it is necessary to regularly increase oxygen for the river, and the current way to increase oxygen for the river is generally achieved through aerators.

[0003] The Chinese utility model patent with authorization announcement number CN2701258Y discloses a new type of adjustable pond aquaculture oxygenator, including a U-shaped floating boat, a fixed bracket, a stainless steel cylinder, a stainless steel shaft, upper and lower spiral impellers and a motor. The upper and lower spiral impellers are driven by the motor to rotate, thereby increasing the flow of air in the pond and increasing the amount of oxygen added to the pond.

[0004] However, the oxygen-containing bubbles generated by the above-mentioned novel pond aquaculture aerator are large in volume, small in number and low in efficiency, so that the oxygenation effect is not obvious. Summary of the invention

[0005] The object of the present invention is to provide a high-efficiency nano-aeration device, which produces oxygen-containing bubbles with a small volume, a large number of bubbles and a high generation efficiency, and has an ideal oxygenation effect on water bodies.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A high-efficiency nano-aeration device comprises a mounting frame, an aeration device mounted on the mounting frame, and an air supply device for supplying air to the aeration device; the aeration device comprises an aeration cylinder, a submersible motor, a dispersion disk, a wind shear assembly, and a water shear assembly; the dispersion disk is fixed on the inner side of the metal cylinder, the submersible motor is mounted at one end of the aeration cylinder and its output shaft passes through the dispersion disk, and the output shaft of the submersible motor is sequentially mounted with a coaxially rotating wind shear assembly, a rotating impeller, and a water shear assembly in a direction away from the dispersion disk; the outer side wall of the aeration cylinder is also provided with an air supply joint connected to the air supply device between the dispersion disk and the submersible motor, the outer side wall of the aeration cylinder at the installation position of the rotating impeller is uniformly provided with air outlets in the circumferential direction, and the aeration cylinder is also provided with a water inlet for water flow to enter at the end away from the submersible motor.

[0008] By adopting the above technical scheme, the operation steps of the high-efficiency nano aeration device in the present invention are as follows: 1. The entire high-efficiency aeration device is placed in a river, pond or lake that needs to be treated, and the stand to be installed is stably placed on the bottom of the river; 2. The air supply device supplies air to the aeration device, and the supplied gas can be the external atmosphere, oxygen, ozone and a mixed gas thereof, and the supplied gas enters the inner cavity of the aeration cylinder through the air supply joint; 3. Under the joint action of the rotating impeller and the air supply device, the supplied gas passes through the dispersion disk and the wind shear component in sequence and enters the rotating impeller. At the same time, the water in the river will pass through the water shear component to reach the rotating impeller; 4. Under the action of the rotating impeller, the gas that has passed through the wind shear and the water that has passed through the water shear are impacted and mixed, and finally discharged from the outer wall of the aeration cylinder.

[0009] Among them, the gas is cut into thin streams under the action of the dispersion disk, and then further refined by the wind shear component; the water is broken up into a vortex under the action of the water shear component; when the air and water flow are impacted and mixed, the oxygen-containing bubbles formed are smaller in volume, more in number and higher in efficiency, thereby improving the oxygenation effect on the river channel.

[0010] Since the high-efficiency nano aeration device is completely immersed in the water body and is located at the bottom of the river, the oxygen-containing bubbles generated can cover a larger area of ​​the water body and help the water flow, thereby improving the water quality of the treated water body and improving the treatment efficiency.

[0011] As a further improvement of the present invention, the wind cutting assembly includes at least two cutting impellers stacked and installed on the output shaft, and a plurality of cutting blades are evenly distributed around the cutting impeller. The surfaces on both sides of the cutting blades are spiral surfaces. The cutting blades are provided with cutting gaps along their width directions and the cutting blades are divided into at least two unit blades. A wind cutting blade is provided on one side of the unit blade facing the direction of rotation, and the cutting blades of adjacent cutting impellers are staggered.

[0012] By adopting the above technical solution, the wind shear assembly includes at least two stacked cutting impellers, the cutting impellers have cutting blades, and the cutting blades are divided into multiple unit blades by cutting gaps. At the same time, a wind cutting blade is provided on the side of the unit blade facing the rotation direction. This structural setting can further enhance the air cutting ability of the entire wind shear assembly, so that the input air is cut into smaller cyclones, thereby making the oxygen-containing bubbles generated by the high-efficiency river aeration equipment more delicate.

[0013] As a further improvement of the present invention, the wind shear assembly also includes at least two rough cutting impellers stacked and installed on the output shaft, the rough cutting impeller has a plurality of rough cutting blades evenly distributed circumferentially, the width of the rough cutting blades is smaller than the width of the cutting blades, and the rough cutting impeller is installed on the output shaft and is located on the side of the cutting impeller close to the submersible motor.

[0014] By adopting the above technical solution, the setting of the rough cutting impeller can initially stir the input air, so that the cutting effect of the subsequent cutting impeller is more ideal, thereby improving the aeration quality of the high-efficiency river aeration equipment.

[0015] As a further improvement of the present invention, the water cutting assembly also includes at least two cutting impellers stacked and installed on the output shaft, and the cutting blades of adjacent cutting impellers are staggered.

[0016] By adopting the above technical solution, the water cutting component adopts a stacked arrangement of cutting impellers to realize the function of the water cutting component to cut and stir the water flow, making the collision between the water body and the air more intense, thereby producing more fine oxygen-containing bubbles and improving the management effect of the river channel.

[0017] As a further improvement of the present invention, the rotating impeller includes a first wind disk close to the wind shear component, a second wind disk close to the water shear component, and a plurality of rotating fan blades connecting the first wind disk and the second wind disk; the first wind disk has an air outlet at the center, and the surface of the first wind disk facing the wind shear component is a spherical surface for guiding air into the air outlet; there is a water guiding gap between the second wind disk and the inner wall of the aeration cylinder, and the surface of the second wind disk facing the water shear component is a spherical surface for guiding water into the water guiding gap; a plurality of rotating fan blades are evenly arranged circumferentially along the edge of the air outlet, and an air outlet channel facing the air outlet is formed between adjacent rotating fan blades.

[0018] By adopting the above technical solution, when the rotating impeller starts to run, negative pressure is generated at the air outlet channel, the transported air passes through the air outlet and the air outlet channel in turn, and the water is impacted and mixed with the air through the water guide gap, and the water vapor mixture is discharged through the air outlet. Compared with the traditional wind wheel structure, the rotating impeller can achieve water vapor mixing, so that the oxygen-containing bubbles in the water vapor mixture discharged from the air outlet are more delicate, smaller in size, and more numerous.

[0019] As a further improvement of the present invention, the aeration cylinder is further provided with a filter baffle covering the water inlet, and the filter baffle is uniformly distributed with water-permeable through holes.

[0020] By adopting the above technical solution, the setting of the filter baffle can prevent large impurities from entering the aeration cylinder, thereby ensuring the operating stability of the high-efficiency nano aeration equipment.

[0021] As a further improvement of the present invention, the aeration cylinder has a hollow frustum-shaped water inlet portion, the outer diameter of which gradually decreases in the direction away from the submersible motor, and the filter baffle is an arc surface and a water inlet gap for water to enter is formed between the inner wall of the filter baffle and the outer wall of the water inlet portion.

[0022] By adopting the above technical solution, the setting of the water inlet can further reduce the large impurities entering the inner cavity of the aeration cylinder. When the water-permeable through hole at the filter baffle is blocked by large debris, the water flow can enter the inner cavity of the aeration cylinder through the water inlet gap, ensuring the normal operation of the efficient nano aeration equipment.

[0023] As a further improvement of the present invention, the air outlets are S-shaped and are evenly arranged circumferentially on the outer wall of the aeration cylinder, and the number of the air outlets on the aeration cylinder is not less than ten.

[0024] By adopting the above technical solution, the S-shaped air outlet can further cut the water-gas mixture. Compared with the traditional circular air outlet, the S-shaped air outlet adopted in the present invention makes it difficult for the air in the water-gas mixture to merge with each other, which helps to increase the number of oxygen-containing bubbles in the water-gas mixture discharged from the aeration cylinder and reduce the volume of the oxygen-containing bubbles.

[0025] As a further improvement of the present invention, the aeration cylinder and the submersible motor are connected and fixed by a detachable structure, and the detachable structure includes a first clamping ring arranged at the end of the aeration cylinder, a second clamping ring arranged at the end of the shell of the submersible motor, and a locking clamp cooperating with the first clamping ring and the second clamping ring.

[0026] By adopting the above technical solution, the aeration cylinder and the submersible motor are detachably installed through the locking clamp, which can facilitate the disassembly and assembly between the aeration cylinder and the submersible motor, thereby facilitating the disassembly and maintenance of the dispersion disk, cutting assembly, rotating impeller, and water cutting assembly installed on the output shaft of the submersible motor.

[0027] As a further improvement of the present invention, the aeration cylinder is vertically arranged and the water inlet is vertically arranged downward, and the mounting bracket is fixed to the outer side wall of the aeration cylinder.

[0028] By adopting the above technical solution, due to the structural setting of the aeration device, when the water inlet of the aeration cylinder is set downward, the air outlet of the aeration cylinder can be lower than the riverbed, thereby increasing the coverage area of ​​the oxygen-containing bubbles generated by the aeration device, thereby improving the treatment effect on the water body.

[0029] In summary, the present invention has the following beneficial effects:

[0030] 1. A high-efficiency nano-aeration device, including a mounting stand, an aeration device and an air supply device. The aeration device includes an aeration cylinder, a submersible motor, a dispersion plate, a wind shear assembly, a rotating impeller and a water shear assembly, which can produce relatively fine oxygen-containing bubbles to oxygenate the river channel, help the water flow in the river channel, thereby improving the oxygenation and cleaning capacity of the river channel and improving the efficiency of water quality management;

[0031] 2. The wind shear component includes multiple stacked cutting impellers, which help to cut and stir the conveying air, and help to make the volume and quantity of oxygen-containing bubbles in the generated water-gas mixture smaller, thereby improving the efficiency of water quality treatment;

[0032] 3. The setting of the filter baffle can reduce the probability of large debris entering the aeration cylinder, thereby improving the operating stability of the aeration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 It is a structural schematic diagram of the aeration device in the present invention;

[0035] Figure 3 It is a cross-sectional schematic diagram of the aeration device in the present invention;

[0036] Figure 4 It is a schematic diagram of the structure of the rough-cut impeller in the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the cutting impeller in the present invention;

[0038] Figure 6 for Figure 5 The enlarged view of point A in the middle;

[0039] Figure 7 It is a schematic diagram of the back structure of the rotating impeller in the present invention;

[0040] Figure 8 It is a schematic diagram of the front structure of the rotating impeller in the present invention.

[0041] In the figure: 1, mounting stand; 2, aeration device; 21, aeration cylinder; 211, water inlet; 212, water inlet; 213, first clamp ring; 214, air supply joint; 215, air outlet; 22, submersible motor; 221, second clamp ring; 222, output shaft; 23, dispersion disc; 232, rotating bearing; 233, sealing ring; 24, wind shear assembly; 25, rotating impeller; 251, first wind disc; 251a, air outlet; 252, second wind disc; 253, rotating fan blade; 254, water guide gap; 255. Air outlet channel; 26. Water cutting assembly; 27. Locking clamp; 271. Clamp groove; 28. Filter baffle; 281. Water-permeable through hole; 282. Water inlet gap; 29. ​​Baffle bracket; 291. Fixing ring; 292. Fixing rod; 3. Air supply device; 31. Air pipeline; 4. Control cabinet; 41. Waterproof cable; 51. Rough cutting impeller; 511. Rough cutting fan blade; 52. Cutting impeller; 521. Cutting fan blade; 521a. Unit fan blade; 521b. Cutting gap; 521c. Cutting wind blade. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0043] See attached Figure 1 A high-efficiency nano-aeration device includes a mounting stand 1, an aeration device 2, an air supply device 3 and a control cabinet 4. The air supply device 3 and the control cabinet 4 are both installed on the shore, and the aeration device 2 and the mounting stand 1 are submerged in the water body. Under the support of the mounting stand 1, the aeration device 2 can be positioned on the bottom of the water body. The air supply device 3 and the aeration device 2 are connected to the aeration device 2 through a gas pipeline 31 to supply air to the aeration device 2, and the control cabinet 4 is connected to the aeration device 2 through a waterproof cable 41 to supply power to the aeration device 2. The aeration device 2 and the mounting stand 1 located at the bottom of the water body can be retrieved through the gas pipeline 31 and the waterproof cable 41.

[0044] The gas supply device 3 can supply gas to the aeration device 2. The gas provided by the gas supply device 34 to the aeration device 23 may be oxygen, ozone or other gases.

[0045] See attached Figure 2 and attached Figure 3 The aeration device 2 includes an aeration cylinder 21 , a submersible motor 22 , a dispersion disk 23 , a wind shear assembly 24 , a rotating impeller 25 and a water shear assembly 26 .

[0046] The aeration cylinder 21 is a hollow cylindrical metal cylinder, with a hollow water inlet 211 at one end. The water inlet 211 is in a frustum shape, and the outer diameter of the water inlet 211 gradually decreases in the direction away from the aeration cylinder 21. The water inlet 211 has a water inlet 212 connected to the inner cavity of the aeration cylinder 21.

[0047] The submersible motor 22 is installed at the other end of the aeration cylinder 21 through a detachable structure. The detachable structure includes a first clamping ring 213 provided at the end of the aeration cylinder 21, a second clamping ring 221 provided at the end of the housing of the submersible motor 22, and a locking clamp 27 matched with the first clamping ring 213 and the second clamping ring 221. The locking clamp 27 is a high-pressure pipe clamp and has a clamp groove 271 for the first clamping ring 213 and the second clamping ring 221 to be embedded.

[0048] The output shaft 222 of the submersible motor 22 extends into the aeration cylinder 21 , and a dispersion disk 23 , a wind shear assembly 24 , a rotary impeller 25 and a water shear assembly 26 are sequentially arranged in a direction away from the submersible motor 22 .

[0049] The dispersion disc 23 is installed in the aeration cylinder 21 and isolates the inner cavity of the aeration cylinder 21. The dispersion disc 23 is evenly distributed with dispersion holes penetrating the front and rear end surfaces thereof, and the air will be dispersed after passing through the dispersion disc 23, thereby forming a fine air flow. In this embodiment, the dispersion holes in the dispersion disc 23 are all oblique holes.

[0050] The outer wall of the dispersion disc 23 is provided with a sealing ring 233 and is circumferentially sealed against the inner wall of the aeration cylinder 21. The inner wall of the dispersion disc 23 is provided with a rotary bearing 232 that cooperates with the submersible motor 22, so that the output shaft 222 of the submersible motor 22 can pass through the dispersion disc 23 and can rotate smoothly. In this embodiment, two dispersion discs 23 are arranged at intervals in the aeration cylinder.

[0051] See attached Figure 1 and attached Figure 2 The aeration cylinder 21 is also provided with an air supply joint 214 connected to the air supply pipeline 31 between the dispersion plate 23 and the submersible motor 22 .

[0052] See attached Figure 3 The wind shear assembly 24 includes three rough cutting impellers 51 stacked and installed on the output shaft 222 and two cutting impellers 52 stacked and installed on the output shaft 222 in sequence along the direction away from the dispersion disk 23.

[0053] See attached Figure 4 The rough-cut impeller 51 has six rectangular rough-cut blades 511 evenly distributed in the circumferential direction, and the rough-cut blades 511 between adjacent rough-cut impellers 51 are staggered.

[0054] See attached Figure 3 , Attachment Figure 5 and attached Figure 6 , the cutting impeller 52 is evenly distributed with four cutting blades 521 in the circumferential direction, and the two side surfaces of the cutting blades 521 are spiral surfaces. Among them, the cutting blades 521 of adjacent cutting impellers 52 are staggered. The cutting blades 521 are provided with cutting gaps 521b at intervals along the width direction thereof and the cutting blades 521 are divided into at least two unit blades 521a. In the present embodiment, there are two cutting gaps 521b on the cutting blade 521, and the cutting blade 521 is evenly divided into three unit blades 521a. Among them, the width of the unit blade 521a is greater than the width of the rough cutting blade 511. In order to improve the air cutting ability of the unit blade 521a, a cutting blade 521c is provided on the side of the unit blade 521a facing the rotation direction.

[0055] See attached Figure 3 , Attachment Figure 7 and attached Figure 8The rotating impeller 25 includes a first wind disc 251 close to the wind shear component 24 , a second wind disc 252 close to the water shear component 26 , and a plurality of rotating blades 253 connecting the first wind disc 251 and the second wind disc 252 .

[0056] The first wind disc 251 has a wind port 251a at its center, and the surface of the first wind disc 251 facing the wind shear assembly 24 is a spherical surface for guiding air into the wind port 251a. A water guide gap 254 is present between the second wind disc 252 and the inner wall of the aeration cylinder 21, and the surface of the second wind disc 252 facing the water shear assembly 26 is a spherical surface for guiding water into the water guide gap 254. A plurality of rotating blades 253 are evenly arranged along the circumference of the edge of the wind port 251a, and an air outlet channel 255 is formed between adjacent rotating blades 253.

[0057] See attached Figure 3 and attached Figure 5 The water cutting assembly 26 also includes two cutting impellers 52 stacked and mounted on the output shaft 222, and the cutting blades 521 of adjacent cutting impellers 52 are staggered.

[0058] The outer wall of the aeration cylinder 21 at the installation location of the rotating impeller 25 is uniformly distributed with air outlets 215 in the circumferential direction. The air outlets 215 are opposite to the air outlet passages 255 of the rotating fan blades 253. The air outlets 215 are S-shaped and uniformly distributed in the circumferential direction on the outer wall of the aeration cylinder 21. In this embodiment, the number of the air outlets 215 on the aeration cylinder 21 is twenty.

[0059] See attached Figure 2 and attached Figure 3 In order to prevent large debris from entering the aeration cylinder 21 and affecting the normal operation of the aeration device 2, the aeration cylinder 21 is also provided with a filter baffle 28 covering the water inlet 212 and a baffle bracket 29 for installing the filter baffle 28. The filter baffle 28 is in the shape of an arc surface as a whole and is evenly distributed with water-permeable through holes 281 for water flow to pass through, and a water inlet gap 282 for water to enter is formed between the filter baffle 28 and the water inlet 211. The baffle bracket 29 includes a fixing ring 291 fixed to the outer wall of the aeration cylinder 21 and a fixing rod 292 fixed to the fixing ring 291 and connected to the filter baffle 28.

[0060] The aeration principle of the aeration device 2 in the present invention is as follows:

[0061] 1. The gas supply device 3 supplies gas to the aeration device 2. The supplied gas may be the outside atmosphere, oxygen, ozone or a mixed gas thereof. The supplied gas enters the inner cavity of the aeration cylinder 21 through the gas supply connector 214;

[0062] 2. Under the joint action of the rotating impeller 25 and the air supply device 3, the supplied gas enters the rotating impeller 25 through the dispersion plate 23 and the wind shear component 24 in sequence. At the same time, the water in the river channel passes through the water shear component 26 and reaches the rotating impeller 25;

[0063] 3. Under the action of the rotating impeller 25 , the gas cut by wind and the water cut by water are impacted and mixed, and finally discharged from the outer wall of the aeration cylinder 21 .

[0064] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A high-efficiency nano-aeration device, characterized in that: The invention comprises a mounting frame (1), an aeration device (2) mounted on the mounting frame (1), and an air supply device (3) for supplying air to the aeration device (2); the aeration device (2) comprises an aeration cylinder (21), a submersible motor (22), a dispersion plate (23), an air shear assembly (24), and a water shear assembly (26); the dispersion plate (23) is fixed to the inner side of the metal cylinder; the submersible motor (22) is mounted on one end of the aeration cylinder (21) and its output shaft (222) passes through the dispersion plate (23); the upper edge of the output shaft (222) of the submersible motor (22) is A coaxially rotating wind shear assembly (24), a rotating impeller (25) and a water shear assembly (26) are sequentially installed in a direction away from the dispersion disk (23); an air supply joint (214) connected to the air supply device (3) is also provided on the outer wall of the aeration cylinder (21) between the dispersion disk (23) and the submersible motor (22); air outlets (215) are evenly distributed in the circumferential direction of the outer wall of the aeration cylinder (21) at the installation position of the rotating impeller (25); and a water inlet (212) for water flow to enter is also provided on the end of the aeration cylinder (21) away from the submersible motor (22); The wind cutting component (24) comprises at least two cutting impellers (52) stacked and mounted on the output shaft (222); the cutting impeller (52) is evenly distributed with a plurality of cutting blades (521) in the circumferential direction; both side surfaces of the cutting blades (521) are spiral surfaces; the cutting blades (521) are provided with cutting gaps (521b) along their width directions and the cutting blades (521) are divided into at least two unit blades (521a); ​​and a wind cutting blade (521c) is provided on one side of the unit blades (521a) facing the rotation direction; and the cutting blades (521) of adjacent cutting impellers (52) are staggered; The water cutting assembly (26) also includes at least two cutting impellers (52) stacked and mounted on the output shaft (222), and the cutting blades (521) of adjacent cutting impellers (52) are arranged in a staggered manner; The rotary impeller (25) comprises a first wind disc (251) close to the wind shear component (24), a second wind disc (252) close to the water shear component (26), and a plurality of rotary blades (253) connecting the first wind disc (251) and the second wind disc (252); the first wind disc (251) has an air outlet (251a) at its center, and the surface of the first wind disc (251) facing the wind shear component (24) is a spherical surface for guiding air into the air outlet (251a); a water guide gap (254) is present between the second wind disc (252) and the inner wall of the aeration cylinder (21), and the surface of the second wind disc (252) facing the water shear component (26) is a spherical surface for guiding water into the water guide gap (254); a plurality of rotary blades (253) are evenly arranged in the circumferential direction along the edge of the air outlet (251a), and an air outlet channel (255) facing the air outlet (215) is formed between adjacent rotary blades (253).

2. A high-efficiency nano-aeration device according to claim 1, characterized in that: The wind shear assembly (24) further comprises at least two rough cutting impellers (51) stacked and mounted on the output shaft (222); the rough cutting impeller (51) has a plurality of rough cutting blades (511) evenly distributed in the circumferential direction; the width of the rough cutting blades (511) is smaller than the width of the cutting blades (521); and the rough cutting impeller (51) is mounted on the output shaft (222) and is located on a side of the cutting impeller (52) close to the submersible motor (22).

3. A high-efficiency nano-aeration device according to claim 1, characterized in that: The aeration cylinder (21) is also provided with a filtering baffle (28) covering the water inlet (212), and the filtering baffle (28) is evenly distributed with water-permeable through holes (281).

4. A high-efficiency nano-aeration device according to claim 3, characterized in that: The aeration cylinder (21) has a hollow frustum-shaped water inlet (211), the outer diameter of the water inlet (211) gradually decreases in a direction away from the submersible motor (22), the filter baffle (28) is an arc surface, and a water inlet gap (282) for water to enter is formed between the inner wall of the filter baffle (28) and the outer wall of the water inlet (211).

5. The high-efficiency nano-aeration device according to claim 1, characterized in that: The air outlets (215) are S-shaped and are evenly arranged in the circumferential direction on the outer wall of the aeration cylinder (21), and the number of the air outlets (215) on the aeration cylinder (21) is not less than ten.

6. The high-efficiency nano-aeration device according to claim 1, characterized in that: The aeration cylinder (21) and the submersible motor (22) are connected and fixed via a detachable structure, wherein the detachable structure comprises a first clamping ring (213) arranged at the end of the aeration cylinder (21), a second clamping ring (221) arranged at the end of the shell of the submersible motor (22), and a locking clamp (27) cooperating with the first clamping ring (213) and the second clamping ring (221).

7. The high-efficiency nano-aeration device according to claim 1, characterized in that: The aeration cylinder (21) is arranged vertically and the water inlet (212) is arranged vertically downward, and the mounting stand (1) is fixed to the outer side wall of the aeration cylinder (21).

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