Accurate aeration stirring system of MBBR (moving bed biofilm reactor)

Abstract

The utility model discloses an MBBR (Moving Bed Biofilm Reactor) accurate aeration stirring system, which solves the problem that air easily generates larger bubbles in sewage when an aeration device is used for aeration in the prior art. The aeration device comprises an aeration tank, a gas transmission mechanism arranged in the aeration tank, a plurality of aeration heads arranged on the gas transmission mechanism and used for aeration, a gas distribution mechanism arranged in the aeration heads and used for gas distribution, a plurality of adjusting mechanisms arranged between the gas transmission mechanism and the aeration heads and used for adjusting gas flow, and a stirring mechanism arranged in the aeration tank, and an aeration fan connected with the gas transmission mechanism is arranged on the aeration tank. According to the aeration device, when air is discharged through the aeration head and passes through the air distribution mechanism, the air distribution mechanism can distribute the air, so that the air can uniformly enter the aeration tank, and larger bubbles are prevented from being generated when the air enters the aeration tank.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to an MBBR precise aeration and agitation system. Background Art

[0002] In recent years, with the implementation of environmental protection policies and people's higher requirements for living environment, sewage treatment is imperative. The sewage treatment in cities is relatively mature, and the construction of sewage treatment pipelines is relatively mature and perfect. For the treatment of decentralized points, due to problems such as pipeline laying, it is difficult to achieve centralized collection and treatment. The integrated sewage treatment equipment has the characteristics of high intensification, fast start-up speed, flexibility and simplicity, and has great advantages in solving the needs of decentralized sewage treatment.

[0003] MBBR is also called a suspended packing biofilm reactor. The MBBR process combines the advantages of traditional fluidized beds and biological contact oxidation methods, and is a new type of efficient sewage treatment method. Relying on the aeration in the aeration tank and the lifting action of the water flow, the carrier is in a fluidized state, and then suspended activated sludge and attached biological film are formed. This enables the moving bed biofilm to use the entire reactor space, giving full play to the advantages of both the attached phase and the suspended phase organisms, making them make full use of their strengths and avoid their weaknesses, and complement each other. Different from the previous fillers, MBBR uses suspended fillers. The suspended fillers can come into frequent contact with sewage under the action of aeration, so they are called "moving biofilms". They have the characteristics of strong shock resistance and are suitable for the needs of decentralized sewage treatment.

[0004] In a traditional MBBR reaction tank, the aeration device transports air to the bottom of the reaction tank through an air pipe, and discharges the air into the sewage through the air holes on the air pipe. When the aeration device stops operating, the sewage in the reaction tank easily enters the air pipe through the air holes, causing the inner wall and outer wall of the air pipe to be corroded by the sewage, thus reducing the service life of the air pipe. Moreover, the air holes are directly opened on the air pipe. Under the corrosion of the sewage, the pore walls of the air holes are easily corroded by the sewage, resulting in the continuous expansion of the aperture of the air holes. When the aperture of the air holes increases, the air forms larger bubbles in the reaction tank. When the bubbles float upward, their floating speed is relatively fast, which causes the microorganisms on the fillers to be unable to react fully with the air, affecting the growth of the microorganisms on the fillers. Content of the Utility Model

[0005] The utility model provides an MBBR precise aeration and agitation system to solve at least some of the above technical problems.

[0006] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0007] MBBR precise aeration and agitation system, including an aeration tank, and further including an air delivery mechanism disposed in the aeration tank, several aeration heads for aeration disposed on the air delivery mechanism, an air distribution mechanism for air distribution disposed in the aeration head, several regulating mechanisms for regulating gas flow disposed between the air delivery mechanism and the aeration head, and an agitation mechanism disposed in the aeration tank; an aeration blower connected to the air delivery mechanism is provided on the aeration tank.

[0008] Further, the air delivery mechanism includes an air delivery pipe disposed in the aeration tank and connected to the aeration blower, and several air delivery branch pipes evenly distributed at the bottom of the aeration tank and connected to the air delivery pipe; mounting sleeves for mounting aeration heads are evenly distributed on the air delivery branch pipes.

[0009] Further, the mounting sleeve includes a connecting sleeve connected to the air delivery branch pipe, and a limiting sleeve integrally structured with the connecting sleeve; the regulating mechanism is installed in the limiting sleeve, and the aeration head is installed on the limiting sleeve.

[0010] Further, the regulating mechanism includes a spherical plug slidably fitted in the limiting sleeve, and a regulating spring disposed in the limiting sleeve, with one end in contact with the spherical plug and the other end in contact with the aeration head; the diameter of the spherical plug is larger than the inner diameter of the connecting sleeve.

[0011] Further, the aeration head includes an aeration connecting pipe detachably connected to the air delivery mechanism by threads, and a gas distribution mechanism installation pipe connected to the aeration connecting pipe; the gas distribution mechanism is installed in the gas distribution mechanism installation pipe.

[0012] Further, the aeration head further includes a capacity increasing pipe connected between the aeration connecting pipe and the gas distribution mechanism installation pipe, with the small end of the capacity increasing pipe connected to the aeration connecting pipe and the large end connected to the gas distribution mechanism installation pipe.

[0013] Further, a limiting ring is detachably connected to the gas distribution mechanism installation pipe by threads, an intercepting net is provided on the limiting ring, and a butting protrusion in contact with the gas distribution mechanism is provided on the inner top wall of the limiting ring.

[0014] Further, the gas distribution mechanism includes at least two disk-shaped gas distribution disks disposed in the aeration head, gas distribution holes are evenly distributed on the gas distribution disks, and the gas distribution holes on adjacent two gas distribution disks are staggeredly distributed.

[0015] Further, several embedding grooves are provided on the bottom surface of the gas distribution disk, and protrusions adapted to the embedding grooves are provided on the top surface of the gas distribution disk; the embedding grooves are evenly distributed circumferentially along the outer edge of the bottom surface of the gas distribution disk, and there are two protrusions which are distributed on the same diameter on the top surface of the gas distribution disk.

[0016] Further, the agitation mechanism includes a driving motor disposed on the aeration tank, a rotating shaft located in the aeration tank on the driving end of the driving motor, and several stirring blades disposed on the rotating shaft.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model has a simple structure, is scientifically and reasonably designed, and is convenient to use. The air generated by the aeration fan of the utility model is transported to the bottom of the aeration tank through the air transportation mechanism and discharged into the aeration tank through the aeration head. When the air passes through the adjustment mechanism, the air can enter the aeration head evenly and stably, and when the aeration fan is turned off, the adjustment mechanism can block the air transportation mechanism, thereby preventing the sewage in the aeration tank from entering the air transportation mechanism and causing corrosion of the air transportation mechanism. At the same time, when the air is discharged through the aeration head, when the air passes through the air distribution mechanism, the air distribution mechanism can distribute the air, so that the air can enter the aeration tank evenly, thereby preventing large bubbles from being generated when the air enters the aeration tank. The stirring mechanism is installed in the aeration tank, and the sewage in the aeration tank can be stirred through the stirring mechanism, so that the filler floating on the surface of the sewage can be mixed with the air, and the filler can react fully with the air, which is convenient for the growth of microorganisms on the filler, thereby improving the sewage treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the utility model.

[0020] Figure 2 It is a schematic diagram of the air transportation mechanism of the utility model.

[0021] Figure 3 It is a schematic diagram of the adjustment mechanism of the utility model.

[0022] Figure 4 It is a schematic diagram of the air distribution mechanism of the utility model.

[0023] Figure 5 It is a schematic diagram of the limit ring of the utility model.

[0024] Figure 6 It is a schematic diagram of the installation sleeve of the utility model.

[0025] Figure 7 It is a schematic diagram of the aeration head of the utility model.

[0026] Among them, the names corresponding to the reference numerals are:

[0027] 1. Aeration tank; 2. Air delivery mechanism; 4. Aeration head; 5. Adjustment mechanism; 7. Stirring mechanism; 8. Aeration connecting pipe; 9. Aeration fan; 10. Air distribution mechanism installation pipe; 11. Air distribution plate; 12. Air distribution holes; 13. Embedded groove; 14. Protrusion; 15. Limit ring; 16. Abutting protrusion; 17. Volume-increasing pipe; 18. Intercepting net; 19. Water outlet; 20. Water inlet; 22. Air delivery pipe; 23. Air delivery branch pipe; 24. Installation sleeve; 25. Connection sleeve; 26. Limit sleeve; 51. Spherical plug; 52. Adjusting spring; 73. Driving motor; 71. Rotating shaft; 72. Stirring blade. Detailed implementation mode

[0028] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] Embodiment 1.

[0032] As Figure 1-7As shown in the figure, the MBBR precise aeration and agitation system includes an aeration tank 1, and also includes an air delivery mechanism 2 arranged in the aeration tank 1, several aeration heads 4 for aeration arranged on the air delivery mechanism 2, an air distribution mechanism 6 for distributing air arranged in the aeration heads 4, several regulating mechanisms 5 for regulating the gas flow rate arranged between the air delivery mechanism 2 and the aeration heads 4, and an agitation mechanism 7 arranged in the aeration tank 1; an aeration blower 9 connected to the air delivery mechanism 2 is arranged on the aeration tank 1.

[0033] When the utility model is in use, the air generated by the aeration blower 9 is delivered to the bottom of the aeration tank 1 through the air delivery mechanism 2 and discharged into the aeration tank 1 through the aeration heads 4. At the same time, the regulating mechanism 5 is arranged between the air delivery mechanism 3 and the aeration heads 4, so that when the air passes through the regulating mechanism 5, the air can enter the aeration heads 4 evenly and stably. And when the aeration blower 9 is turned off, the regulating mechanism 5 can block the air delivery mechanism 3, thereby preventing the sewage in the aeration tank 1 from entering the air delivery mechanism 3 and causing corrosion of the air delivery mechanism 3. At the same time, when the air is discharged through the aeration heads 4, when the air passes through the air distribution mechanism 6, the air distribution mechanism 6 can distribute the air, so that the air can enter the aeration tank 1 evenly, thereby avoiding the generation of large bubbles when the air enters the aeration tank 1. The agitation mechanism 7 is installed in the aeration tank 1, and the sewage in the aeration tank 1 can be agitated through the agitation mechanism 7, so that the fillers floating on the surface of the sewage can be mixed with the air, enabling the fillers to react fully with the air, facilitating the growth of microorganisms on the fillers, and thus improving the sewage treatment efficiency.

[0034] Embodiment 2.

[0035] As Figure 1-7 As shown in the figure, the MBBR precise aeration and agitation system includes an aeration tank 1, and also includes an air delivery mechanism 2 arranged in the aeration tank 1, several aeration heads 4 for aeration arranged on the air delivery mechanism 2, an air distribution mechanism 6 for distributing air arranged in the aeration heads 4, several regulating mechanisms 5 for regulating the gas flow rate arranged between the air delivery mechanism 2 and the aeration heads 4, and an agitation mechanism 7 arranged in the aeration tank 1; an aeration blower 9 connected to the air delivery mechanism 2 is arranged on the aeration tank 1.

[0036] The air delivery mechanism 2 includes an air delivery pipe 22 arranged in the aeration tank 1 and connected to the aeration blower 9, and several air delivery branch pipes 23 evenly distributed at the bottom of the aeration tank 1 and connected to the air delivery pipe 22; mounting sleeves 24 for installing the aeration heads 4 are evenly distributed on the air delivery branch pipes 23.

[0037] Embodiment 2 provides a more preferable structure of the air delivery mechanism 2 on the basis of Embodiment 1. Specifically, the air delivery mechanism 2 includes an air delivery pipe 22 disposed in the aeration tank 1 and connected to the aeration blower 9, and a plurality of air delivery branch pipes 23 evenly distributed at the bottom of the aeration tank 1 and connected to the air delivery pipe 22; mounting sleeves 24 for mounting the aeration heads 4 are evenly distributed on the air delivery branch pipes 23.

[0038] In the utility model, the air delivery pipe 22 is arranged on the pool wall of the aeration tank 1 and connected to the aeration blower 9. The air delivery branch pipes 23 are evenly distributed at the bottom of the aeration tank 1 and connected to the air delivery pipe 22. At the same time, mounting sleeves 24 for mounting the aeration heads 4 are evenly distributed on the air delivery branch pipes 23. The aeration blower 9 conveys air into the aeration heads 4 through the air delivery pipe 22, the air delivery branch pipes 23, and the mounting sleeves 24, so that the air is discharged into the aeration tank 1 through the aeration heads 4, enabling the air to enter the sewage through the bottom of the aeration tank 1. The number of the mounting sleeves 24 in the utility model is consistent with the number of the aeration heads 4.

[0039] Embodiment 3.

[0040] As Figure 1-7 shown, the MBBR precise aeration and agitation system includes an aeration tank 1, and further includes an air delivery mechanism 2 disposed in the aeration tank 1, a plurality of aeration heads 4 for aeration disposed on the air delivery mechanism 2, an air distribution mechanism 6 for distributing air disposed in the aeration heads 4, a plurality of regulating mechanisms 5 for regulating the gas flow rate disposed between the air delivery mechanism 2 and the aeration heads 4, and an agitation mechanism 7 disposed in the aeration tank 1; an aeration blower 9 connected to the air delivery mechanism 2 is provided on the aeration tank 1.

[0041] The air delivery mechanism 2 includes an air delivery pipe 22 disposed in the aeration tank 1 and connected to the aeration blower 9, and a plurality of air delivery branch pipes 23 evenly distributed at the bottom of the aeration tank 1 and connected to the air delivery pipe 22; mounting sleeves 24 for mounting the aeration heads 4 are evenly distributed on the air delivery branch pipes 23.

[0042] The mounting sleeve 24 includes a connecting sleeve 25 connected to the air delivery branch pipe 23, and a limiting sleeve 26 integrally formed with the connecting sleeve 25; the regulating mechanism 5 is installed in the limiting sleeve 26, and the aeration head 4 is installed on the limiting sleeve 26.

[0043] Embodiment 3 provides a more preferable structure of the mounting sleeve 24 on the basis of Embodiment 2. Specifically, the mounting sleeve 24 includes a connecting sleeve 25 connected to the air delivery branch pipe 23, and a limiting sleeve 26 integrally formed with the connecting sleeve 25; the regulating mechanism 5 is installed in the limiting sleeve 26, and the aeration head 4 is installed on the limiting sleeve 26.

[0044] The connecting sleeve 25 of the utility model is threadedly connected to the gas transmission branch pipe 23 and is communicated with the gas transmission branch pipe 23. Air can enter the connecting sleeve 25 and the limiting sleeve 26 through the gas transmission branch pipe 23. When the air passes between the connecting sleeve 25 and the limiting sleeve 26, the adjusting mechanism 5 can adjust the air flow rate so that the air flow rate entering the aeration head 4 is the same, facilitating the uniform entry of air into the aeration tank 1. At the same time, the adjusting mechanism 5 can facilitate the blocking of sewage entering the connecting sleeve 25, thus preventing sewage from entering the gas transmission branch pipe 23.

[0045] The limiting sleeve 26 of the utility model facilitates the installation of the adjusting mechanism 5. The aeration head 4 is installed on the limiting sleeve 26. Specifically, the gas transmission branch pipe 23 is provided with a threaded through hole adapted to the connecting sleeve 25, and the connecting sleeve 25 is threadedly connected to the threaded through hole. The threaded through hole communicates the inside and outside of the gas transmission branch pipe 23. Threaded connection facilitates the connection of the gas transmission branch pipe 23 and the connecting sleeve 25, and also facilitates the replacement and installation of the installation sleeve 24.

[0046] Embodiment 4.

[0047] As Figure 1-7 shown, the MBBR precise aeration and agitation system includes an aeration tank 1, and also includes a gas transmission mechanism 2 provided in the aeration tank 1, several aeration heads 4 provided on the gas transmission mechanism 2 for aeration, a gas distribution mechanism 6 provided in the aeration head 4 for gas distribution, several adjusting mechanisms 5 provided between the gas transmission mechanism 2 and the aeration heads 4 for adjusting the gas flow rate, and an agitation mechanism 7 provided in the aeration tank 1; an aeration blower 9 is provided on the aeration tank 1 and is connected to the gas transmission mechanism 2.

[0048] The gas transmission mechanism 2 includes a gas transmission pipe 22 provided in the aeration tank 1 and connected to the aeration blower 9, and several gas transmission branch pipes 23 evenly distributed at the bottom of the aeration tank 1 and connected to the gas transmission pipe 22; the gas transmission branch pipes 23 are evenly provided with installation sleeves 24 for installing the aeration heads 4.

[0049] The installation sleeve 24 includes a connecting sleeve 25 connected to the gas transmission branch pipe 23 and a limiting sleeve 26 integrally formed with the connecting sleeve 25; the adjusting mechanism 5 is installed in the limiting sleeve 26, and the aeration head 4 is installed on the limiting sleeve 26.

[0050] The adjusting mechanism 5 includes a spherical plug 51 slidably fitted in the limiting sleeve 26, and an adjusting spring 52 provided in the limiting sleeve 26, one end of which is in contact with the spherical plug 51 and the other end is in contact with the aeration head 4; the diameter of the spherical plug 51 is larger than the inner diameter of the connecting sleeve 25.

[0051] Embodiment 4 provides a more preferable structure of the adjusting mechanism 5 on the basis of Embodiment 3, specifically: The adjusting mechanism 5 includes a spherical plug 51 slidably fitted in the limiting sleeve 26, and an adjusting spring 52 disposed in the limiting sleeve 26, with one end in contact with the spherical plug 51 and the other end in contact with the aeration head 4; the diameter of the spherical plug 51 is larger than the inner diameter of the connecting sleeve 25.

[0052] In the present utility model, the spherical plug 51 is disposed in the limiting sleeve 26 and in contact with the top of the connecting sleeve 25, and the diameter of the spherical plug 51 is larger than the aperture of the connecting sleeve 25, thereby preventing the spherical plug 51 from sliding out of the connecting sleeve 25. The adjusting spring 52 is arranged in the limiting sleeve 26, and one end of the adjusting spring 52 is in contact with the spherical plug 51 and the other end is in contact with the aeration head 4.

[0053] When in use in the present utility model, gas enters the connecting sleeve 25 through the air delivery branch pipe 23. When the air pressure in the connecting sleeve 25 is greater than the pressure of the water pressure in the limiting sleeve 26 on the spherical plug 51, the air pressure pushes the spherical plug 51 to slide along the limiting sleeve 26 and squeezes the adjusting spring 52, causing the spherical plug 51 to separate from the top of the connecting sleeve 25. The gas is discharged uniformly through the gap formed between the spherical plug 51 and the inner wall of the connecting sleeve 25. When the aeration blower 9 stops working, the spherical plug 51 contacts the inner diameter of the top of the connecting sleeve 25 under the action of the adjusting spring 52, thereby preventing sewage from entering the connecting sleeve 25 to corrode the air delivery branch pipe 23.

[0054] Embodiment 5.

[0055] As Figure 1-7 shown, the MBBR precise aeration and agitation system includes an aeration tank 1, and further includes an air delivery mechanism 2 disposed in the aeration tank 1, several aeration heads 4 for aeration disposed on the air delivery mechanism 2, a gas distribution mechanism 6 for distributing gas disposed in the aeration heads 4, several adjusting mechanisms 5 for adjusting the gas flow rate disposed between the air delivery mechanism 2 and the aeration heads 4, and an agitation mechanism 7 disposed in the aeration tank 1; an aeration blower 9 connected to the air delivery mechanism 2 is provided on the aeration tank 1.

[0056] The aeration head 4 includes an aeration connection pipe 8 detachably connected to the air delivery mechanism 2 by threads, and a gas distribution mechanism installation pipe 10 connected to the aeration connection pipe 8; the gas distribution mechanism 6 is installed in the gas distribution mechanism installation pipe 10.

[0057] Embodiment 5 provides a more preferable structure of the aeration head 4 on the basis of Embodiment 1, specifically: The aeration head 4 includes an aeration connection pipe 8 detachably connected to the air delivery mechanism 2 by threads, and a gas distribution mechanism installation pipe 10 connected to the aeration connection pipe 8; the gas distribution mechanism 6 is installed in the gas distribution mechanism installation pipe 10.

[0058] The aeration connecting pipe 8 of the present utility model is detachably connected to the limiting sleeve 26 by threads. The air distribution mechanism installation pipe 10 is arranged on the aeration connecting pipe 8, and the air distribution mechanism installation pipe 10 and the aeration connecting pipe 8 are of an integral structure. The air distribution mechanism installation pipe 10 can facilitate the installation of the air distribution mechanism. The inner diameter of the limiting sleeve 26 is provided with internal threads, and the aeration connecting pipe 8 is provided with external threads adapted to the internal threads. The internal threads are screwed with the external threads to connect the limiting sleeve 26 and the aeration connecting pipe 8. After the limiting sleeve 26 and the aeration connecting pipe 8 are threadedly connected, the bottom of the aeration connecting pipe 8 is located inside the limiting sleeve 26 and contacts one end of the adjusting spring 52, so as to fix the adjusting spring 52 inside the limiting sleeve 26.

[0059] The aeration connecting pipe 8 and the limiting sleeve 26 of the present utility model are connected by threads, which can facilitate the maintenance and installation of the aeration head 4.

[0060] Embodiment 6.

[0061] As Figure 1-7 shown, the MBBR precise aeration and stirring system includes an aeration tank 1, and also includes an air delivery mechanism 2 arranged in the aeration tank 1, several aeration heads 4 for aeration arranged on the air delivery mechanism 2, an air distribution mechanism 6 for air distribution arranged in the aeration heads 4, several adjusting mechanisms 5 for adjusting the gas flow rate arranged between the air delivery mechanism 2 and the aeration heads 4, and a stirring mechanism 7 arranged in the aeration tank 1; an aeration blower 9 connected to the air delivery mechanism 2 is arranged on the aeration tank 1.

[0062] The aeration head 4 includes an aeration connecting pipe 8 detachably connected to the air delivery mechanism 2 by threads, and an air distribution mechanism installation pipe 10 connected to the aeration connecting pipe 8; the air distribution mechanism 6 is installed in the air distribution mechanism installation pipe 10.

[0063] The aeration head 4 further includes a capacity increasing pipe 17 connected between the aeration connecting pipe 8 and the air distribution mechanism installation pipe 10. The small head end of the capacity increasing pipe 17 is connected to the aeration connecting pipe 8, and the large head end is connected to the air distribution mechanism installation pipe 10.

[0064] Based on Embodiment 5, Embodiment 6 of the present utility model gives a more preferable structure of the air distribution mechanism 6, specifically: the aeration head 4 further includes a capacity increasing pipe 17 connected between the aeration connecting pipe 8 and the air distribution mechanism installation pipe 10. The small head end of the capacity increasing pipe 17 is connected to the aeration connecting pipe 8, and the large head end is connected to the air distribution mechanism installation pipe 10.

[0065] The capacity increasing pipe 17 of the present utility model is arranged between the aeration connecting pipe 8 and the air distribution mechanism installation pipe 10, and the capacity increasing pipe 17, the aeration connecting pipe 8 and the air distribution mechanism installation pipe 10 are of an integral structure. The capacity increasing pipe 17 can facilitate the limitation of the air distribution mechanism 6, so as to facilitate the installation of the air distribution mechanism 6.

[0066] Example 7

[0067] As shown Figure 1-7 in the figure, the MBBR precise aeration and agitation system includes an aeration tank 1, and further includes an air delivery mechanism 2 disposed in the aeration tank 1, several aeration heads 4 for aeration disposed on the air delivery mechanism 2, an air distribution mechanism 6 for air distribution disposed in the aeration head 4, several regulating mechanisms 5 for regulating gas flow disposed between the air delivery mechanism 2 and the aeration heads 4, and an agitation mechanism 7 disposed in the aeration tank 1; an aeration blower 9 connected to the air delivery mechanism 2 is provided on the aeration tank 1.

[0068] The aeration head 4 includes an aeration connection pipe 8 detachably connected to the air delivery mechanism 2 by threads, and a gas distribution mechanism installation pipe 10 connected to the aeration connection pipe 8; the gas distribution mechanism 6 is installed in the gas distribution mechanism installation pipe 10.

[0069] A limit ring 15 is detachably connected to the gas distribution mechanism installation pipe 10 by threads. An intercepting net 18 is provided on the limit ring 15, and an abutting protrusion 16 in contact with the gas distribution mechanism 6 is provided on the inner top wall of the limit ring 15.

[0070] On the basis of Example 5, Example 7 gives a more preferable structure of the gas distribution mechanism installation pipe 10, specifically: a limit ring 15 is detachably connected to the gas distribution mechanism installation pipe 10 by threads. An intercepting net 18 is provided on the limit ring 15, and an abutting protrusion 16 in contact with the gas distribution mechanism 6 is provided on the inner top wall of the limit ring 15.

[0071] In the utility model, the limit ring 15 is threadedly connected to the gas distribution mechanism installation pipe 10. Specifically, external threads are provided on the outer diameter of the gas distribution mechanism installation pipe 10, internal threads adapted to the external threads are provided on the inner wall of the limit ring 15, and the limit ring 15 is threadedly connected to the gas distribution mechanism installation pipe 10. When the limit ring 15 is threadedly connected to the gas distribution mechanism installation pipe 10, the abutting protrusion 16 on the inner top wall of the limit ring 15 is in contact with the gas distribution mechanism 6, so that the gas distribution mechanism 6 can be fixed in the gas distribution mechanism installation pipe 10.

[0072] Example 8

[0073] As shown Figure 1-7 in the figure, the MBBR precise aeration and agitation system includes an aeration tank 1, and further includes an air delivery mechanism 2 disposed in the aeration tank 1, several aeration heads 4 for aeration disposed on the air delivery mechanism 2, an air distribution mechanism 6 for air distribution disposed in the aeration head 4, several regulating mechanisms 5 for regulating gas flow disposed between the air delivery mechanism 2 and the aeration heads 4, and an agitation mechanism 7 disposed in the aeration tank 1; an aeration blower 9 connected to the air delivery mechanism 2 is provided on the aeration tank 1.

[0074] The air distribution mechanism 6 includes at least two disk-shaped air distribution plates 11 disposed in the aeration head 4. The air distribution plates 11 are evenly provided with air distribution holes 12, and the air distribution holes 12 on two adjacent air distribution plates 11 are staggeredly distributed.

[0075] In this Embodiment 8, a more preferable structure of the air distribution mechanism 6 is given on the basis of Embodiment 1. Specifically, the air distribution mechanism 6 includes at least two disk-shaped air distribution plates 11 disposed in the aeration head 4. The air distribution plates 11 are evenly provided with air distribution holes 12, and the air distribution holes 12 on two adjacent air distribution plates 11 are staggeredly distributed.

[0076] The air distribution plate 11 of the present utility model is provided with at least two, preferably two. The air distribution plate 11 is evenly provided with air distribution holes 12, and the air distribution holes 12 on two adjacent air distribution plates 11 are staggeredly distributed. The present utility model controls the size of air entering the sewage by adjusting the gap between the air distribution holes 12 on two adjacent air distribution plates 11, so as to avoid generating large bubbles when air is in the sewage. Through the gap between the air distribution holes 12 on two adjacent air distribution plates 11, the packing in the aeration tank 1 can fully react with air.

[0077] Embodiment 9.

[0078] As Figure 1-7 shown, the MBBR precise aeration and stirring system includes an aeration tank 1, and further includes an air delivery mechanism 2 disposed in the aeration tank 1, several aeration heads 4 for aeration disposed on the air delivery mechanism 2, an air distribution mechanism 6 for air distribution disposed in the aeration head 4, several regulating mechanisms 5 for regulating gas flow disposed between the air delivery mechanism 2 and the aeration heads 4, and a stirring mechanism 7 disposed in the aeration tank 1; an aeration blower 9 connected to the air delivery mechanism 2 is provided on the aeration tank 1.

[0079] The air distribution mechanism 6 includes at least two disk-shaped air distribution plates 11 disposed in the aeration head 4. The air distribution plates 11 are evenly provided with air distribution holes 12, and the air distribution holes 12 on two adjacent air distribution plates 11 are staggeredly distributed.

[0080] The bottom surface of the air distribution plate 11 is provided with several embedding grooves 13, and the top surface of the air distribution plate 11 is provided with protrusions 14 adapted to the embedding grooves 13; the embedding grooves 13 are evenly distributed circumferentially along the outer edge of the bottom surface of the air distribution plate 11, and there are two protrusions 14 which are distributed on the same diameter of the top surface of the air distribution plate 11.

[0081] In this Embodiment 9, a more preferable structure of the air distribution plate 11 is given on the basis of Embodiment 8. Specifically, the bottom surface of the air distribution plate 11 is provided with several embedding grooves 13, and the top surface of the air distribution plate 11 is provided with protrusions 14 adapted to the embedding grooves 13; the embedding grooves 13 are evenly distributed circumferentially along the outer edge of the bottom surface of the air distribution plate 11, and there are two protrusions 14 which are distributed on the same diameter of the top surface of the air distribution plate 11.

[0082] In the present utility model, the protrusions 14 on the middle and lower air distribution plates 11 of two adjacent air distribution plates 11 are fitted into the corresponding slots 13 of the upper air distribution plate 11. By adjusting the fitting positions of the protrusions 14 and the corresponding slots 13, the gaps between the adjacent lower air distribution holes 12 and the upper air distribution holes 12 can be adjusted, so that air distribution can be facilitated, enabling air to enter the aeration tank 1 evenly and preventing large bubbles from being generated in the sewage by air.

[0083] Embodiment 10.

[0084] As Figure 1-7 shown, the MBBR precise aeration and stirring system includes an aeration tank 1, and further includes an air delivery mechanism 2 arranged in the aeration tank 1, several aeration heads 4 for aeration arranged on the air delivery mechanism 2, an air distribution mechanism 6 for air distribution arranged in the aeration heads 4, several regulating mechanisms 5 for regulating gas flow arranged between the air delivery mechanism 2 and the aeration heads 4, and a stirring mechanism 7 arranged in the aeration tank 1; an aeration blower 9 connected to the air delivery mechanism 2 is arranged on the aeration tank 1.

[0085] The stirring mechanism 7 includes a driving motor 73 arranged on the aeration tank 1, a rotating shaft 71 arranged on the driving end of the driving motor 73 and located in the aeration tank 1, and several stirring blades 72 arranged on the rotating shaft 71.

[0086] Based on Embodiment 1, Embodiment 10 of the present utility model provides a more preferable structure of the stirring mechanism 7, specifically: the stirring mechanism 7 includes a driving motor 73 arranged on the aeration tank 1, a rotating shaft 71 arranged on the driving end of the driving motor 73 and located in the aeration tank 1, and several stirring blades 72 arranged on the rotating shaft 71.

[0087] A cover plate is arranged on the aeration tank 1 of the present utility model, the driving motor 73 is installed on the cover plate, a rotating shaft 71 is arranged on the output end of the driving motor 73, and several stirring blades 72 are arranged on the rotating shaft 71. Preferably, there are 2 stirring blades 72 in the present utility model. By driving the rotating shaft 71 to rotate through the driving motor 73, the rotating shaft 71 drives the stirring blades 72 to rotate, so as to fully mix the packing on the sewage surface with the sewage, facilitating the full reaction of the microorganisms on the packing with the air in the sewage, and the stirring blades 72 can divide the bubbles in the sewage during the stirring process, facilitating the full reaction of the microorganisms on the packing with the air.

[0088] The water inlet 20 of the aeration tank 1 of the present utility model is arranged at the bottom, the water outlet 19 of the aeration tank 1 is arranged at the top of the aeration tank 1, and a packing interception net is arranged at the water outlet 19, which can effectively intercept the packing, and the stirring mechanism 7 can prevent the packing from gathering at the water outlet 19 during the stirring process.

[0089] The aeration blower 9 and the drive motor 73 used in the present utility model are both prior arts and can be directly purchased and used in the market. Therefore, the structures, circuits and principles of the aeration blower 9 and the drive motor 73 will not be elaborated herein.

[0090] Finally, it should be noted that the above embodiments are only relatively preferred embodiments of the present utility model to illustrate the technical solutions of the present utility model, rather than limiting it, let alone limiting the patent scope of the present utility model; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present utility model; that is to say, any meaningless changes or touch-ups made in the main design concept and spirit of the present utility model, as long as the technical problems solved are still the same as those of the present utility model, should be included in the protection scope of the present utility model; in addition, directly or indirectly applying the technical solutions of the present utility model to other related technical fields shall similarly be included in the patent protection scope of the present utility model.

Claims

1. The MBBR precision aeration and stirring system comprises an aeration tank (1), characterized in that: The invention also comprises an air delivery mechanism (2) arranged in the aeration tank (1), a plurality of aeration heads (4) arranged on the air delivery mechanism (2) for aeration, an air distribution mechanism (6) arranged in the aeration head (4) for air distribution, a plurality of regulating mechanisms (5) arranged between the air delivery mechanism (2) and the aeration head (4) for regulating the gas flow, and a stirring mechanism (7) arranged in the aeration tank (1); an aeration fan (9) connected to the air delivery mechanism (2) is arranged on the aeration tank (1).

2. The MBBR precision aeration and stirring system according to claim 1, characterized in that: The gas delivery mechanism (2) comprises a gas delivery pipe (22) arranged in the aeration tank (1) and connected to the aeration fan (9), and a plurality of gas delivery branch pipes (23) evenly distributed at the bottom of the aeration tank (1) and connected to the gas delivery pipe (22); mounting sleeves (24) for mounting an aeration head (4) are evenly distributed on the gas delivery branch pipes (23).

3. The MBBR precision aeration and stirring system according to claim 2 is characterized in that: The installation sleeve (24) comprises a connection sleeve (25) connected to the gas transmission branch pipe (23), and a limit sleeve (26) which is an integral structure with the connection sleeve (25); the adjustment mechanism (5) is installed in the limit sleeve (26), and the aeration head (4) is installed on the limit sleeve (26).

4. The MBBR precision aeration and stirring system according to claim 3 is characterized in that: The regulating mechanism (5) comprises a spherical plug (51) slidably embedded in the limiting sleeve (26), and an regulating spring (52) arranged in the limiting sleeve (26), one end of which contacts the spherical plug (51) and the other end of which contacts the aeration head (4); the diameter of the spherical plug (51) is larger than the inner diameter of the connecting sleeve (25).

5. The MBBR precision aeration and stirring system according to claim 1, characterized in that: The aeration head (4) comprises an aeration connection pipe (8) detachably connected to the gas delivery mechanism (2) by thread, and an air distribution mechanism installation pipe (10) connected to the aeration connection pipe (8); the air distribution mechanism (6) is installed in the air distribution mechanism installation pipe (10).

6. The MBBR precision aeration and stirring system according to claim 5, characterized in that: The aeration head (4) further comprises a volume expansion pipe (17) connected between the aeration connection pipe (8) and the air distribution mechanism installation pipe (10), wherein the small end of the volume expansion pipe (17) is connected to the aeration connection pipe (8) and the large end is connected to the air distribution mechanism installation pipe (10).

7. The MBBR precision aeration and stirring system according to claim 5, characterized in that: A limit ring (15) is detachably connected to the air distribution mechanism installation pipe (10) by thread, an interception net (18) is provided on the limit ring (15), and an abutment protrusion (16) in contact with the air distribution mechanism (6) is provided on the inner top wall of the limit ring (15).

8. The MBBR precision aeration and stirring system according to claim 1, characterized in that: The air distribution mechanism (6) comprises at least two disc-shaped air distribution disks (11) arranged in the aeration head (4), the air distribution disks (11) being evenly distributed with air distribution holes (12), and the air distribution holes (12) on two adjacent air distribution disks (11) being staggered.

9. The MBBR precision aeration and stirring system according to claim 8, characterized in that: The bottom surface of the gas distribution disk (11) is provided with a plurality of embedded grooves (13), and the top surface of the gas distribution disk (11) is provided with protrusions (14) matched with the embedded grooves (13); the embedded grooves (13) are evenly distributed along the outer edge of the bottom surface of the gas distribution disk (11) in the circumferential direction, and there are two protrusions (14) distributed on the same diameter of the top surface of the gas distribution disk (11).

10. The MBBR precision aeration and stirring system according to claim 1, characterized in that: The stirring mechanism (7) comprises a driving motor (73) arranged on the aeration tank (1), a rotating shaft (71) arranged on the driving end of the driving motor (73) and located in the aeration tank (1), and a plurality of stirring blades (72) arranged on the rotating shaft (71).

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