CN212334778U

CN212334778U - Underwater aeration device

Info

Publication number: CN212334778U
Application number: CN202021730133.1U
Authority: CN
Inventors: 黄翀; 黄东辉; 张琪; 马俊伟; 周天宇; 冯超; 蒋燕; 申晨希; 史群毓
Original assignee: Jiangsu Yulong EP Co ltd
Current assignee: Jiangsu Yulong EP Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-01-12
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses an underwater aeration device, which comprises a lifting shaft and a mounting flange, wherein the mounting flange is arranged at the upper end of the lifting shaft, the outer wall of the circumference at the upper end of the mounting flange is provided with a sealing gasket, the mounting flange and the sealing gasket are provided with mounting screws penetrating through the vertical inner part close to the outer side of the circumference, the novel underwater aeration device is designed to solve the problems that the traditional aeration device can only carry out aeration in liquid and has low energy utilization rate, compared with the traditional aeration device, the novel underwater aeration device can realize the aeration function in the water body, meanwhile, the device can synchronously utilize the kinetic energy generated during aeration and convert the kinetic energy generated during aeration into rotary stirring kinetic energy, thereby, the function of stirring the water body can be achieved, the energy utilization efficiency can be greatly improved, and meanwhile, the aeration pipe is driven and stirred at the center at a constant speed, so that the aeration is more uniform and reasonable.

Description

Underwater aeration device

Technical Field

The utility model belongs to the technical field of the aeration pipe is relevant, concretely relates to aeration equipment under water.

Background

The aeration pipe is a new type of aeration equipment, also called compressed air aeration, and usually adopts this aeration method in A/O and A2/O process, CASS process, Pleke process and improved oxidation ditch process, its principle is that the air is delivered into the aeration equipment set up at the bottom of the pool through the air delivery pipeline by the air blower, and the air escapes in the form of bubbles, and the oxygen is dissolved into the water at the air-liquid interface, the aeration equipment is different according to its application process, its type mainly includes membrane type microporous aerator and rotary mixing aerator, etc., wherein the membrane type microporous aerator is divided into tubular microporous aerator and disk type microporous aerator, in addition, there is a single-pore membrane aerator mainly used in aeration biological filter.

The prior underwater aeration device has the following problems: when installing inside the water and carrying out the aeration operation, current aeration equipment under water, it can only be solitary carry out aeration work through its inside conveying air via the trompil blowout on the aeration pipe, but when the air spout and the aeration through the trompil, then can not obtain reasonable utilization through trompil spun air its kinetic energy of production when the aeration this moment, so not only can make the aeration pipe great limitation appear when using, also can make the aeration pipe extravagant more energy when using simultaneously.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an aeration equipment under water to when the air that proposes in solving above-mentioned background art spouts through the trompil and when the aeration, then can not obtain reasonable utilization through trompil spun air its kinetic energy of production when the aeration, so not only can make the aeration pipe great limitation appear when using, also can make the aeration pipe waste the problem of more energy when using simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: an underwater aeration device comprises a lifting shaft and a mounting flange, wherein the mounting flange is arranged at the upper end of the lifting shaft, a sealing gasket is arranged on the outer wall of the circumference at the upper end of the mounting flange, a mounting screw penetrates through the vertical inner part of the outer side of the circumference of the mounting flange and the sealing gasket, a fixing sleeve is sleeved outside the circumference at the lowest end of the lifting shaft, a rubber sealing sleeve is connected to the outer wall of the circumference at the upper end of the fixing sleeve, the rubber sealing sleeve is sleeved on the outer wall of the circumference of the lifting shaft through a packaging rubber, a wheel shaft is arranged at the lower end of the fixing sleeve, a sealing rotating sleeve is sleeved outside the circumference at the joint of the wheel shaft and the fixing sleeve, the wheel shaft and the fixing sleeve are fixedly connected through the sealing rotating sleeve, the left end and the right end of the wheel shaft are respectively connected with a branch connecting pipe, the outermost, aeration pipe A is located aeration pipe B's symmetry right side, aeration pipe A's the right-hand member and aeration pipe B's the left end all are connected with the gasket, aeration pipe A and aeration pipe B's one side outer wall inside all is provided with the trompil.

Preferably, the sealing rotary sleeve can enable the wheel shaft to independently rotate in a circumferential manner when the sealing wheel shaft is in butt joint with the fixed sleeve.

Preferably, the lifting shaft, the wheel shaft, the two branch pipes, the aeration pipe a and the aeration pipe B are all kept in a communicated state, and the two branch pipes, the aeration pipe a and the aeration pipe B are all kept in a vertical state with the lifting shaft.

Preferably, the aeration pipe A and the aeration pipe B are symmetrically arranged by taking the circle center of a wheel axle as a central point, and the shape, size and material composition of the aeration pipe A and the aeration pipe B are the same.

Preferably, the lifting shaft is fixedly connected with an external air supply pipe through a mounting flange and a mounting screw at the top end, and a sealing gasket on the outer wall of the upper end of the mounting flange can seal the butt joint of the mounting flange and the external air supply pipe.

Preferably, the inner openings of the outer walls of the aeration pipe A and the aeration pipe B are circular holes, and the inner openings of the outer walls of the aeration pipe A and the aeration pipe B are kept on the same horizontal straight line.

Preferably, the lifting shaft bottom circumference outside and the shaft bottom are connected with a rotary anti-disengaging device, the rotary anti-disengaging device comprises a laminating pad, a connecting block A, an anti-disengaging pressing plate, a fixed bearing, a connecting block B and a connecting fixing bolt, the fixed bearing is sleeved on the lifting shaft bottom circumference outside, the anti-disengaging pressing plate is arranged under the shaft, the laminating pad is arranged on the outer wall of the upper end of the anti-disengaging pressing plate, the laminating pad is laminated on the outer wall of the lower end of the shaft, the connecting block A is arranged on the outer wall of the two ends of the anti-disengaging pressing plate, the connecting block B is arranged on the outer wall of the front end and the rear end of the fixed bearing, the connecting fixing bolt penetrates through the connecting block A and the two connecting block B, and the connecting block A and the two connecting block B are fixedly connected.

Preferably, the laminating pad is made by soft silica gel material, laminating pad and anticreep clamp plate pass through adhesive fixed connection, two connect fixing bolt and set up both ends outside around shaft and sealed swivel nut respectively, two connect fixing bolt all not with shaft and sealed swivel nut contact.

Compared with the prior art, the utility model provides an aeration equipment under water possesses following beneficial effect:

1. the utility model solves the problems that the traditional aeration device can only simply aerate in liquid and the energy utilization rate is lower by designing a novel underwater aeration device, compared with the traditional aeration device, the novel underwater aeration device can realize the aeration function in water, simultaneously can synchronously utilize the kinetic energy generated during aeration and convert the kinetic energy generated during aeration into rotary stirring kinetic energy, thereby achieving the effect of stirring water, greatly improving the energy utilization efficiency, correspondingly installing one or more aeration pipes on a wheel shaft according to the use requirement, arranging a horizontal linear arrangement of open pores in the outer wall of one side of each aeration pipe, and connecting the aeration pipes with the wheel shaft through butt flanges on branch pipes, the aeration pipe then depends on the shaft and carries out the circular rotation, and the shaft then is connected with the lift axle, and the lift axle then is connected with outside air supply line through mounting flange, when outside air supply line is to the inside air delivery of lift axle, the air enters into the shaft through the lift axle, the air that enters into the shaft then can shunt to a plurality of takeover insides and carry, then can shunt the air and carry in a plurality of aeration pipes, at this moment because aeration pipe one side inside is provided with the trompil, so the air that is carried then can spout through the trompil of aeration pipe one side, and the air can produce reverse thrust when spouting through the trompil, thereby make aeration pipe self produce thrust, receive under this thrust can make aeration pipe depend on the shaft and carry out central rotation around the shaft under water, and the air that is carried can the continuation when aeration pipe is rotatory outwards through the trompil, thereby achieving the function of aeration and the function of stirring water, and simultaneously leading the aeration pipe to be in central transmission stirring at a constant speed so as to lead the aeration to be more uniform and reasonable;

2. the utility model adds a connection type rotation anti-drop device between the bottom circumference of the lifting shaft of the underwater aeration device and the bottom of the wheel shaft, and the novel rotation anti-drop device can play a role in reinforcing and connecting the wheel shaft, the sealed rotary sleeve, the fixed sleeve and the lifting shaft, when the aeration pipe rotates at high speed in the water body by blowing bubbles, because the aeration pipe rotates mainly under the action of the wheel shaft during rotation, the wheel shaft can generate centrifugal force when the aeration pipe rotates, and the wheel shaft is influenced by the centrifugal force for a long time, the sealed rotary sleeve connecting the fixed sleeve and the wheel shaft can easily become loose or directly drop off, and the novel rotation anti-drop device can avoid the situation, so that the aeration pipe can stably do circumference rotation in the water body through the wheel shaft, the fixed bearing on the rotation anti-drop device is sleeved and fixed outside the bottom circumference of the lifting shaft, the anti-dropping pressure plate is attached to the bottom of the wheel shaft through the attaching pad, the connecting blocks B at the two ends of the fixed bearing and the connecting blocks A at the two ends of the anti-dropping pressure plate are fixedly connected through the connecting fixing bolts, so that the fixed bearing can form a reinforced frame outside the wheel shaft and the bottom end of the lifting shaft through the connection relation between the two connecting fixing bolts and the anti-dropping pressure plate, and the fixed bearing is fixed outside the circumference of the lower side of the lifting shaft, so that when the anti-dropping pressure plate is firmly attached to the bottom of the wheel shaft through the attaching pad, the wheel shaft can synchronously drive the whole rotary anti-dropping device to rotate through the fixed bearing during rotation, the fixed frame formed by the rotary anti-dropping device can not influence the normal rotation of the aeration pipe through the wheel shaft when the wheel shaft is fixedly connected with the sealing rotary sleeve, the fixed sleeve and the lifting shaft cannot loosen due to the influence of centrifugal force, fixing bearing then can fix the anticreep clamp plate through two connection fixing bolt this moment, and because the anticreep clamp plate sticiss in the shaft bottom, so the anticreep clamp plate can prevent the shaft to produce not hard up through the fixed action of connecting fixing bolt, will make the shaft can keep stable state always and supply to make the aeration pipe carry out aeration rotary work in the water like this.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

FIG. 1 is a schematic plan view of an underwater aeration apparatus according to the present invention;

FIG. 2 is a schematic plane view of the aeration tube A and the aeration tube B of the present invention;

fig. 3 is a schematic view of a vertical plane structure of the rotation anti-disengaging device provided by the utility model;

fig. 4 is a schematic view of an independent three-dimensional structure of the rotation anti-disengaging device of the present invention;

in the figure: 1. an aeration pipe A; 2. an aeration pipe B; 3. butting flanges; 4. a wheel axle; 5. a connection pipe is connected; 6. opening a hole; 7. sealing the sheet; 8. sealing the rotary sleeve; 9. a rubber encryption sleeve; 10. fixing a sleeve; 11. a lift shaft; 12. mounting screws; 13. installing a flange; 14. a gasket; 15. a rotation anti-drop device; 16. attaching a pad; 17. connecting a block A; 18. an anti-drop pressure plate; 19. fixing the bearing; 20. connecting block B; 21. and connecting and fixing the bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides a technical solution: an underwater aeration device comprises a lifting shaft 11 and a mounting flange 13, wherein the mounting flange 13 is arranged at the upper end of the lifting shaft 11, a sealing gasket 14 is arranged on the circumferential outer wall of the upper end of the mounting flange 13, a mounting screw 12 penetrates through the mounting flange 13 and the sealing gasket 14 close to the vertical inner part of the outer side of the circumference, the lifting shaft 11 is fixedly connected with an external air supply pipe through the mounting flange 13 and the mounting screw 12 at the top end, the sealing gasket 14 on the outer wall of the upper end of the mounting flange 13 can seal the butt joint of the mounting flange 13 and the external air supply pipe, because the lifting shaft 11 is mainly butted with the external air supply pipe and used for conveying air through the external air supply pipe, the situation of air leakage can be prevented after the butt joint of the mounting flange 13 and the external air supply pipe is completed through the sealing gasket 14, thereby preventing excessive waste, a, the rubber encryption sleeve 9 is connected to the circumferential outer wall of the upper end of the fixed sleeve 10, the rubber encryption sleeve 9 is sleeved on the circumferential outer wall of the lifting shaft 11 through packaging rubber, the lower end of the fixed sleeve 10 is provided with a wheel shaft 4, the sealing rotary sleeve 8 is sleeved outside the circumference of the joint of the wheel shaft 4 and the fixed sleeve 10, the wheel shaft 4 and the fixed sleeve 10 are fixedly connected through the sealing rotary sleeve 8, the left end and the right end of the wheel shaft 4 are both connected with branch pipes 5, the outermost ends of the two branch pipes 5 are both provided with butt flanges 3, the two butt flanges 3 are respectively connected with an aeration pipe A1 and an aeration pipe B2, the aeration pipe A1 is positioned on the symmetrical right side of the aeration pipe B2, the aeration pipe A1 and the aeration pipe B2 are symmetrically installed by taking the circle center of the wheel shaft 4 as the central point, the aeration pipe A1 and the aeration pipe B2 are identical in shape, material composition, and central symmetry can enable the, thus, the effect of stirring water can be effectively realized, the rightmost end of the aeration pipe A1 and the leftmost end of the aeration pipe B2 are both connected with a sealing sheet 7, the inner parts of the outer walls of one sides of the aeration pipe A1 and the aeration pipe B2 are both provided with openings 6, the openings 6 in the outer walls of one sides of the aeration pipe A1 and the aeration pipe B2 are circular holes, the openings 6 in the outer walls of one sides of the aeration pipe A1 and the aeration pipe B2 are both kept on the same horizontal straight line, the circular openings 6 can enable air flow passing through the circular openings to be more uniform and concentrated, therefore, when the air flow is sprayed outwards through the openings 6, the air sprayed out from the openings 6 on the aeration pipe A1 and the aeration pipe B2 can be smoothly kept on the same spraying track, the aeration pipe can be more stable and uniform when the aeration pipe depends on the wheel axle 4 and rotates around the wheel axle 4 under water, the sealing rotary sleeve 8 can enable the wheel axle 4 to rotate independently when the sealing wheel axle 4 is butted with the, the lifting shaft 11, the wheel axle 4, the insides of the two branch pipes 5, the aeration pipe A1 and the aeration pipe B2 are all kept in a communicated state, the two branch pipes 5, the aeration pipe A1 and the aeration pipe B2 are all kept in a vertical state with the lifting shaft 11, the inside of one side of the aeration pipe is provided with the open pore 6, so that the conveyed air can be sprayed out through the open pore 6 on one side of the aeration pipe, and the air can generate reverse thrust when being sprayed out through the open pore 6, so that the aeration pipe generates thrust by itself, the aeration pipe can be supported by the wheel axle 4 and rotates around the wheel axle 4 under the action of the thrust, and the conveyed air can continuously aerate outwards through the open pore 6 when the aeration pipe rotates, so that the aeration function can be realized, and the water body stirring effect can be realized.

An underwater aeration device, wherein the outer part of the circumference of the lowermost end of a lifting shaft 11 is connected with the bottom of a wheel shaft 4 through a rotary anti-falling device 15, the rotary anti-falling device 15 comprises a joint pad 16, a connecting block A17, an anti-falling pressing plate 18, a fixed bearing 19, a connecting block B20 and connecting and fixing bolts 21, the fixed bearing 19 is sleeved on the outer part of the circumference of the lowermost end of the lifting shaft 11, the anti-falling pressing plate 18 is arranged right under the wheel shaft 4, the joint pad 16 is arranged on the outer wall of the upper end of the anti-falling pressing plate 18, the outer wall of the upper end of the joint pad 16 is jointed on the outer wall of the lower end of the wheel shaft 4, the outer walls of the front end and the rear end of the anti-falling pressing plate 18 are respectively provided with a connecting block B20, the connecting and fixing bolts 21 penetrate through between two connecting blocks A17 and 20, and the, the joint pad 16 is made of soft silica gel, the joint pad 16 and the anti-dropping pressure plate 18 are fixedly connected through an adhesive, two connecting and fixing bolts 21 are respectively arranged at the outer sides of the front end and the rear end of the wheel shaft 4 and the sealing rotary sleeve 8, the two connecting and fixing bolts 21 are not contacted with the wheel shaft 4 and the sealing rotary sleeve 8, the connecting blocks B20 at the two ends of the fixed bearing 19 and the connecting blocks A17 at the two ends of the anti-dropping pressure plate 18 are fixedly connected through the connecting and fixing bolts 21, so that the fixed bearing 19 forms a reinforced frame at the outer parts of the bottom ends of the wheel shaft 4 and the lifting shaft 11 through the connecting relation between the two connecting and fixing bolts 21 and the anti-dropping pressure plate 18, and the fixed bearing 19 is fixed at the outer part of the circumference of the lower side of the lifting shaft 11, when the anti-dropping pressure plate 18 is firmly jointed at the bottom of the wheel shaft 4 through the joint pad, therefore, the fixing frame formed by the rotary anti-dropping device 15 can not influence the aerator pipe to normally rotate through the wheel shaft 4 when the fixing frame is used for reinforcing and connecting the wheel shaft 4, the sealing rotary sleeve 8, the fixing sleeve 10 and the lifting shaft 11, and when the wheel shaft 4 is loosened due to the influence of centrifugal force generated during rotation, the fixing bearing 19 can fix the anti-dropping pressing plate 18 through two connecting fixing bolts 21 at the moment, and the anti-dropping pressing plate 18 is tightly pressed at the bottom of the wheel shaft 4, so that the anti-dropping pressing plate 18 can prevent the wheel shaft 4 from loosening due to the fixing action of the connecting fixing bolts 21, and the wheel shaft 4 can be always kept in a stable state to enable the aerator pipe to perform aeration rotary work in a water body.

The utility model discloses a theory of operation and use flow: after the utility model is installed, when the underwater aeration device is assembled and used, firstly, the wheel shaft 4 needs to be fixed to the lower end of the lifting shaft 11 through the fixing sleeve 10, then the fixing sleeve 10 is completely sleeved to the lower end of the lifting shaft 11, then the rubber encryption sleeve 9 connected with the upper end of the fixing sleeve 10 needs to be sealed and connected to the circumferential outer wall of the lifting shaft 11 through the packaging adhesive, thereby the joint of the fixing sleeve 10 and the lifting shaft 11 is encrypted, then the butt joints of the aeration pipe A1 and the aeration pipe B2 need to be respectively butted on the butt flanges 3 on the two branch pipes 5, the aeration pipe A1 and the aeration pipe B2 are respectively and fixedly connected with the two butt flanges 3, then the outer end openings of the aeration pipe A1 and the aeration pipe B2 are sealed through the sealing sheet 7, then the installed aeration pipe A1 and the aeration pipe B2 are suspended in the water body through the lifting shaft 11, then the lifting shaft 11 is butt jointed with an external air supply pipeline through a mounting flange 13 and a mounting screw 12 at the top end of the lifting shaft, so that the whole underwater aeration device is mounted and fixed, when the underwater aeration device is used, when the external air supply pipeline conveys air to the inside of the lifting shaft 11, the air enters the wheel shaft 4 through the lifting shaft 11, the air entering the wheel shaft 4 is shunted to the inside of the branch pipes 5 to be conveyed, and then the air is shunted to the aeration pipes, at the moment, because the inside of one side of the aeration pipe is provided with the open pore 6, the conveyed air is sprayed out through the open pore 6 at one side of the aeration pipe, and the air is sprayed out through the open pore 6 to generate reverse thrust, so that the aeration pipe generates thrust by itself, the aeration pipe can rotate centrally under the underwater by depending on the wheel shaft 4 and around the wheel shaft 4, and the conveyed air can be continuously aerated through the open pore 6 when the aeration pipe rotates, thereby achieving the function of aeration and the function of stirring water.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An underwater aeration apparatus comprising a lifting shaft (11) and a mounting flange (13), characterized in that: the upper end at promotion axle (11) is installed in mounting flange (13), be provided with sealed pad (14) on the upper end circumference outer wall of mounting flange (13), mounting flange (13) and sealed pad (14) are close to the vertical inside of circumference outside and run through installation screw (12), promote axle (11) and cup jointed fixed cover (10) in the lower extreme circumference outside, be connected with rubber on fixed cover (10) upper end circumference outer wall and densify cover (9), rubber densify cover (9) cup joint on the circumference outer wall of promotion axle (11) through the encapsulation rubber, the lower extreme of fixed cover (10) is provided with shaft (4), sealed swivel nut (8) has been cup jointed to shaft (4) and fixed cover (10) handing-over department circumference outside, shaft (4) and fixed cover (10) are through sealed swivel nut (8) fixed connection, both ends all are connected with branch takeover (5) about shaft (4), the outer ends of the two branch pipes (5) are provided with butt-joint flanges (3), the two butt-joint flanges (3) are connected with an aeration pipe A (1) and an aeration pipe B (2) respectively, the aeration pipe A (1) is located on the right side of the symmetry of the aeration pipe B (2), the rightmost end of the aeration pipe A (1) and the leftmost end of the aeration pipe B (2) are connected with sealing pieces (7), and openings (6) are formed in the outer walls of the two aeration pipes A (1) and B (2).

2. An underwater aeration apparatus according to claim 1, wherein: the sealing rotary sleeve (8) can enable the wheel shaft (4) to independently rotate in a circle when the sealing wheel shaft (4) is in butt joint with the fixed sleeve (10).

3. An underwater aeration apparatus according to claim 1, wherein: the lifting shaft (11), the wheel shaft (4), the two branch pipes (5), the aeration pipe A (1) and the aeration pipe B (2) are all kept in a communicated state, and the two branch pipes (5), the aeration pipe A (1) and the aeration pipe B (2) are all kept in a vertical state with the lifting shaft (11).

4. An underwater aeration apparatus according to claim 1, wherein: the aeration pipe A (1) and the aeration pipe B (2) are symmetrically installed by taking the circle center of the wheel shaft (4) as a central point, and the shape, size and material composition of the aeration pipe A (1) and the aeration pipe B (2) are the same.

5. An underwater aeration apparatus according to claim 1, wherein: promote axle (11) and pass through mounting flange (13) and installation screw (12) on top and outside air supply pipe fixed connection, sealed pad (14) on mounting flange (13) upper end outer wall can play sealed effect to mounting flange (13) and outside air supply pipe butt joint department.

6. An underwater aeration apparatus according to claim 1, wherein: the inside trompil (6) of aeration pipe A (1) and aeration pipe B (2) one side outer wall are the circular port, the inside trompil (6) of aeration pipe A (1) and aeration pipe B (2) one side outer wall all keeps on same horizontal straight line.

7. An underwater aeration apparatus according to claim 1, wherein: lifting shaft (11) bottom circumference outside and shaft (4) bottom are connected with rotatory anticreep device (15), rotatory anticreep device (15) are including laminating pad (16), connecting block A (17), anticreep clamp plate (18), fixing bearing (19), connecting block B (20) and connection fixing bolt (21), fixing bearing (19) cup joint lifting shaft (11) bottom circumference outside, anticreep clamp plate (18) set up under shaft (4) is just, be provided with laminating pad (16) on the upper end outer wall of anticreep clamp plate (18), the laminating of the upper end outer wall of laminating pad (16) is on the lower extreme outer wall of shaft (4), all be provided with connecting block A (17) on both ends outer wall around anticreep clamp plate (18), all be provided with connecting block B (20) on the both ends outer wall around fixing bearing (19), two all run through connection fixing bolt (20) between connecting block A (17) and two connecting blocks B (20), (two connecting block B (20) 21) And the two connecting blocks A (17) and the two connecting blocks B (20) are fixedly connected through connecting and fixing bolts (21).

8. An underwater aeration apparatus according to claim 7, wherein: laminating pad (16) is made by soft silica gel material, laminating pad (16) and anticreep clamp plate (18) are through adhesive fixed connection, two connect fixing bolt (21) to set up both ends outside around shaft (4) and sealed swivel sleeve (8) respectively, two connect fixing bolt (21) all not with shaft (4) and sealed swivel sleeve (8) contact.