A modular aeration device

Abstract

This invention discloses a modular aeration device, comprising an aeration module, an air supply module, two agitation modules, and a transmission module. The technical solution of this invention uses multiple aeration heads spaced apart on aeration pipes to form a complete aeration unit. The air supply pipes are detachably connected to the aeration pipes via a first flange, facilitating the disassembly, operation, and assembly of the aeration modules. During on-site assembly in the aeration tank, there is no need to assemble individual parts; connections are made directly between the modules, significantly reducing on-site installation time and improving efficiency. A support frame connects the aeration pipes and the air supply pipes, enhancing the stability of the aeration pipes during movement.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a modular aeration device. Background Technology

[0002] An aeration tank is a structure used for wastewater treatment using the activated sludge process. The tank provides a certain retention time for the wastewater, meeting the oxygen requirements of aerobic microorganisms and the mixing conditions for sufficient contact between wastewater and activated sludge. The aeration tank mainly consists of three parts: the tank body, the aeration system, and the inlet and outlet. The tank body is generally constructed of reinforced concrete, and its plan shape includes rectangular, square, and circular shapes. Existing aeration methods are mainly divided into two types: blower aeration and mechanical aeration.

[0003] Most existing aeration devices are installed on-site. Due to the number of components such as air pipes, branch pipes, and aeration heads, on-site installation is a heavy workload and does not improve the efficiency of on-site installation. Furthermore, since they are fixed at the bottom of the aeration tank, when maintenance is required, production must be stopped and the liquid in the aeration tank must be emptied, which increases the workload of maintenance and reduces the efficiency of maintenance.

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide a modular aeration device, which aims to improve the efficiency of on-site assembly of aeration devices and facilitate subsequent maintenance.

[0006] To achieve the above objectives, the present invention proposes a modular aeration device comprising:

[0007] An aeration module, comprising aeration pipes and multiple aeration heads, wherein the aeration pipes are arranged in a radiating manner and the multiple aeration heads are spaced apart on the aeration pipes;

[0008] An air supply module, comprising an air supply pipe and a support, wherein the air supply pipe and the aeration pipe are detachably connected, and the support connects the aeration pipe and the air supply pipe, and supports and reinforces the aeration pipe.

[0009] Two agitation modules, each agitating module comprising an agitator and a four-sided support, wherein the agitator is rotatably mounted on the four-sided support, and the four-sided support is mounted on the gas transmission pipe; and

[0010] A transmission module is connected to one of the agitation modules and is located at the water inlet, transmitting water flow power to the agitation module through the transmission module.

[0011] Optionally, the aeration pipe includes a main air pipe, multiple load-bearing blocks, and multiple branch air pipes. The multiple branch air pipes are spaced apart on the main air pipe and are all connected to the main air pipe. The multiple aeration heads are spaced apart on the branch air pipes, and the multiple load-bearing blocks are spaced apart on the branch air pipes.

[0012] Optionally, the main air pipe is defined to have a horizontal and a vertical orientation, the main air pipe having an extension end in the vertical orientation, and the extension end being detachably connected to the air supply pipe fitting via a first flange.

[0013] Optionally, reinforcement members are connected between the portions of the plurality of gas distribution pipes that are away from the main gas pipe.

[0014] Optionally, it also includes multiple limiting frames, which are respectively disposed on both sides of the main air pipe. One end of multiple air distribution pipes is respectively installed on the main air pipe at intervals, and the multiple air distribution pipes are arranged in parallel. The end of the air distribution pipe away from the main air pipe is detachably installed on the limiting frame.

[0015] Optionally, the gas transmission pipe is a bent pipe, and the bent portion of the gas transmission pipe is provided with a reinforcing member.

[0016] Optionally, the gas supply pipe includes a first gas supply section and a second gas supply section. One end of the first gas supply section is bent and detachably connected to one end of the second gas supply section via a second flange. The other end of the first gas supply section is detachably connected to the gas source component via a third flange. The second gas supply section is detachably connected to the extension end of the main gas pipe via the first flange. The first gas supply section and the second gas supply section are perpendicular to each other. The bracket is inclined and one end of the bracket is connected to the second gas supply section, and the other end is connected to the gas distribution pipe.

[0017] Optionally, the bracket is inclined, with one end connected to the second gas delivery section and the other end connected to the gas distribution pipe.

[0018] Optionally, the agitation module further includes two vertical rods and a bottom support. The two vertical rods stand on the two gas distribution pipes. The four-sided support has a quadrilateral structure, and its four ends are respectively located on the second gas delivery section, the limiting frame, and the two vertical rods. The bottom support is installed on the side of the four-sided support near the gas distribution pipe and is connected to the agitator. The two agitation modules are driven by a belt structure.

[0019] Optionally, the transmission module includes an impeller and a bracket, the bracket being connected to a limiting frame, the impeller being rotatably connected to the bracket, and the impeller being located on the inlet side. The impeller and an agitator are driven by a belt structure.

[0020] Optionally, the end of the limiting frame facing away from the bottom of the aeration tank is rod-shaped.

[0021] The technical solution of this invention involves installing multiple aeration heads at intervals on the aeration pipe fittings to form an integrated aeration system. The air delivery pipe fittings are detachably connected to the aeration pipe fittings via a first flange, facilitating the disassembly, operation, and assembly of the aeration modules. During on-site assembly in the aeration tank, there is no need to assemble individual parts; connections are made directly between the modules, significantly reducing on-site installation time and improving on-site assembly efficiency. The presence of a bracket, connecting the aeration pipe fittings and the air delivery pipe fittings, enhances the stability of the aeration pipe fittings during movement. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the modular aeration device of the present invention;

[0024] Figure 2 This is a top view of the aeration module in one embodiment of the modular aeration device of the present invention.

[0025] Figure 3 This is a top view of the aeration module in another embodiment of the modular aeration device of the present invention.

[0026] Explanation of icon numbers:

[0027]

[0028] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0033] This invention proposes a modular aeration device 100.

[0034] Reference Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of an embodiment of the modular aeration device of the present invention; Figure 2 This is a top view of the aeration module in one embodiment of the modular aeration device of the present invention.

[0035] Figure 3 This is a top view of the aeration module in another embodiment of the modular aeration device of the present invention.

[0036] In this embodiment of the invention, the modular aeration device 100; such as Figures 1 to 3 As shown, it includes:

[0037] An aeration module 30 includes an aeration pipe and a plurality of aeration heads 36. The aeration pipe is arranged in a radiating manner, and the plurality of aeration heads 36 are spaced apart on the aeration pipe.

[0038] The gas delivery module 10 includes a gas delivery pipe and a support 16. The gas delivery pipe and the aeration pipe are detachably connected. The support 16 connects the aeration pipe and the gas delivery pipe and supports and reinforces the aeration pipe.

[0039] Two agitation modules 40, each agitation module 40 including an agitator and a four-sided support 43, the agitator being rotatably mounted on the four-sided support 43, the four-sided support being mounted on the gas transmission pipe; and

[0040] A transmission module 50 is connected to an agitation module 40 and is located at the water inlet, transmitting water flow power to the agitation module 40 through the transmission module 50.

[0041] The technical solution of this invention uses multiple aeration heads 36 spaced apart on the aeration pipe to form an integrated aeration system. The air supply pipe is detachably connected to the aeration pipe via the first flange 31, facilitating the disassembly, operation, and assembly of the aeration module. Two agitation modules 40 are also rotatably mounted on the air supply pipe. During on-site assembly in the aeration tank, there is no need to assemble individual parts; connections are made directly between modules, significantly reducing on-site installation time and improving efficiency. The bracket 16 connects the aeration pipe and the air supply pipe, enhancing stability during pipe movement. The transmission module 50 enables the agitation module 40 to be driven by the incoming water, mechanically agitating the liquid within the aeration tank and further enhancing aeration efficiency.

[0042] Optionally, the aeration pipe includes a main air pipe 32, multiple load-bearing blocks 35 and multiple branch air pipes 34. The multiple branch air pipes 34 are spaced apart on the main air pipe 32 and are all connected to the main air pipe 32. Multiple aeration heads 36 are spaced apart on the branch air pipes 34 and multiple load-bearing blocks 35 are spaced apart on the branch air pipes 34.

[0043] In this embodiment, the main gas pipe 32 is used to connect the gas delivery pipe, and the gas delivered from the gas delivery pipe is diverted in the main gas pipe 32.

[0044] In this embodiment, the gas distribution pipe 34 is disposed on the side of the main gas pipe 32 and is connected to the main gas pipe 32 for transmitting gas diverted from the main gas pipe 32.

[0045] In this embodiment, a plurality of threaded openings are provided on the main air pipe 32, and one end of the air distribution pipe 34 extends into the threaded openings to realize the connection between the air distribution pipe 34 and the main air pipe 32.

[0046] In this embodiment, the air distribution pipe 32 has multiple threaded openings, and one end of the aeration head 36 extends into the threaded opening and is screwed into the air distribution pipe 32. This allows the connection between the aeration head 36 and the air distribution pipe 32 to be achieved in advance, eliminating the need for a large number of aeration heads 36 to be installed locally on site, greatly shortening the on-site installation time and improving on-site assembly efficiency.

[0047] In one embodiment, the air distribution pipe 34 and the main air pipe 32 are in the same plane. When the main air pipe 32 and the air distribution pipe 34 are immersed in the aeration tank, both the main air pipe 32 and the air distribution pipe 34 can sink to the bottom of the aeration tank, so that the multiple aeration heads 36 can achieve sufficient aeration of the aeration tank, especially the bottom of the aeration tank.

[0048] In one embodiment, the air distribution pipe 34 is perpendicular to the main air pipe 32, and as many threaded openings as possible can be made on the air distribution pipe 34, thereby enabling more aeration heads 36 to be made on the air distribution pipe 34, so as to integrate a large number of aeration heads 36 into a whole, which is beneficial to improving the stability of the overall process.

[0049] like Figure 1 As shown in this embodiment, the load-bearing block 35 is any one of brick, stone, metal, or concrete. The load-bearing block 35 is installed on the side of the air distribution pipe 34 away from the air supply pipe. After the aeration module is submerged in the aeration tank, the presence of multiple load-bearing blocks 35 increases the overall weight of the aeration module 30, enabling the aeration module to be stably submerged in the aeration tank, improving the stability of the aeration module 30 in the aeration tank, ensuring the smooth operation of the aeration module 30, and improving the aeration efficiency.

[0050] In this embodiment, the load-bearing block 35 assists the aeration module 30 to sink quickly when it is lowered, thereby improving the installation speed of the aeration module 30.

[0051] Optionally, the main air pipe 32 is defined to have a horizontal and a vertical direction, the main air pipe 32 is provided with an extension end in the vertical direction, and the extension end is detachably connected to the air supply pipe fitting through a first flange 31.

[0052] like Figure 1As shown, in this embodiment, the vertical extension end of the main air pipe 32 is vertically connected to the aeration pipe. When the aeration module 30 is placed in the aeration tank after being connected to the air supply module 10, the aeration module 30 can be stably lowered or submerged in the aeration tank by hoisting the air supply module 10, thus ensuring the stability of the overall modular aeration device during installation.

[0053] In this embodiment, the extension end is a pipe opening, and the extension end is connected to the aeration pipe through a first flange 31, so that the extension end and the gas supply pipe can be accurately aligned, and the gas transmitted from the gas supply pipe can be accurately transmitted into the main gas pipe 32, ensuring the smoothness of gas supply.

[0054] In one embodiment, the connection between the extension end and the gas supply pipe can be made by means of a threaded connection.

[0055] Optionally, reinforcement members are connected between the portions of the plurality of air distribution pipes 34 that are opposite to the main air pipe 32.

[0056] like Figure 1 As shown, in this embodiment, the portion of the air distribution pipe 34 that is far from the main air pipe 32 is prone to bending and sagging due to its distance from the connection point with the main air pipe 32. By setting reinforcement members between the portions of the multiple air distribution pipes 34 that are far from the main air pipe 32, the multiple air distribution pipes 34 can support each other, thereby improving the stability between the multiple air distribution pipes 34.

[0057] In this embodiment, the reinforcement component connects the portions of the multiple air distribution pipes 34 that are away from the main air pipe 32, and the bracket 16 connects the air supply pipe to the air distribution pipe 34. The interaction between the two ensures the stability of the aeration pipe.

[0058] Optionally, it also includes multiple limiting frames 20, which are respectively disposed on both sides of the main air pipe 32. One end of multiple branch air pipes 34 is respectively installed on the main air pipe 32 at intervals, and the multiple branch air pipes 34 are arranged in parallel. The end of the branch air pipe 34 away from the main air pipe 32 is detachably installed on the limiting frame 20.

[0059] like Figure 1As shown, in this embodiment, there are two limiting frames 20, which are arranged on both sides of the main air pipe 32. The multiple air distribution pipes 34 are arranged in parallel and perpendicular to the main air pipe 32. The end of the air distribution pipe 34 facing away from the main air pipe 32 is perpendicularly connected to the limiting frame 20. This is used to restrict the aeration module 30 at the bottom of the aeration tank, thereby improving the stability of the aeration module 30 after installation.

[0060] In this embodiment, the limiting frame 20 forms a limiting frame, and the end of the air distribution pipe 34 away from the main air pipe 32 is connected to the limiting frame 20. The limiting frame can be set relatively stably in the aeration tank and stabilize the aeration module 30.

[0061] Optionally, the gas transmission pipe is a bent pipe, and the bent portion of the gas transmission pipe is provided with a reinforcing member 13.

[0062] like Figure 1 As shown in this embodiment, the air supply pipe is a bent pipe. Part of the air supply pipe is parallel to the water surface of the aeration tank, and the other part of the air supply pipe is bent and extends into the aeration tank and is connected to the extension end of the main air pipe 32.

[0063] like Figure 1 As shown, in this embodiment, the reinforcing member is disposed on the bend of the gas transmission pipe. By fixing the reinforcing member on the bend, the firmness of the bend of the gas transmission pipe is increased, thereby improving the strength of the bend of the gas transmission pipe.

[0064] like Figure 1 As shown, in this embodiment, the reinforcing member 13 is a plate with lifting holes. When the aeration module 30 and the air supply module 10 are installed in the aeration tank, or when the aeration module 30 and the air supply module 10 need to be repaired or replaced in the aeration tank, the air supply module 10 can be raised or lowered by using a lifting rope through the lifting holes and controlling the tightening or stretching of the lifting rope with a lifting device. This achieves the overall lifting and lowering of the modular aeration device 100, which helps to improve the efficiency of installing the modular aeration device 100. Alternatively, during maintenance, it can avoid downtime and the need to empty the liquid in the aeration tank. The modular aeration device 100 can be directly lifted out of the aeration tank for replacement and maintenance, improving the maintenance efficiency of the modular aeration device 100.

[0065] Optionally, the gas supply pipe includes a first gas supply section 11 and a second gas supply section 15. One end of the first gas supply section 11 is bent and detachably connected to one end of the second gas supply section 15 via a second flange 14. The other end of the first gas supply section 11 is detachably connected to the gas source component via a third flange 12. The second gas supply section 15 is detachably connected to the extension end of the main gas pipe 32 via the first flange 31. The first gas supply section 11 and the second gas supply section 15 are perpendicular to each other. The bracket 16 is inclined and one end of the bracket 16 is connected to the second gas supply section 15, and the other end is connected to the gas distribution pipe 34.

[0066] like Figures 1 to 2 As shown, in this embodiment, one end of the first gas delivery section 11 is connected to the main pipe of the gas source component through the first flange 31 to ensure the sealing of the connection between the first gas delivery section 11 and the main pipe of the gas source component. The detachable connection between the first gas delivery section 11 and the second gas delivery section 15 facilitates disassembly and transportation during transportation, thereby improving the efficiency of transportation or handling.

[0067] like Figure 1 As shown, after the first air conveying section 11 is connected to the second air conveying section 15, the first air conveying section 11 and the second air conveying section 15 are in an L-shape. The second air conveying section 15 passes through the liquid surface of the aeration tank and is connected to the extension end of the main air pipe 32.

[0068] like Figures 1 to 2 As shown, the support 16 is inclined, and with the cooperation of the second air supply section 15 and the air distribution pipe 34, the support 16, the second air supply section 15 and the air distribution pipe 34 form a triangle, thereby improving the stability between the air distribution pipe 34 and the second air supply section 15, and thus improving the stability between the aeration module 30 and the air supply module 10.

[0069] Optionally, the agitation module 40 further includes two vertical rods 46 and a bottom support 44. The two vertical rods 46 stand on the two gas distribution pipes 34. The four-sided support has a quadrilateral structure, and its four ends are respectively located on the second gas delivery section 15, the limiting frame 20, and the two vertical rods 46. The bottom support 44 is installed on the side of the four-sided support near the gas distribution pipe 34 and is connected to the agitator. The two agitation modules 40 are driven by a belt structure.

[0070] like Figure 1 and Figure 3As shown, in this embodiment, the four-sided support includes four first connecting rods 431, second connecting rods 433 and third connecting rods 432. The four first connecting rods 431 are connected end to end, and the first connecting rods 433 and the third connecting rods 432 are respectively connected between two pairs of endpoints of the four-sided support, thereby ensuring the stability of the four-sided support.

[0071] like Figure 1 As shown, in this embodiment, the agitator includes an agitator wheel 42 and an agitator shaft 45. The agitator shaft 45 passes through the second connecting rod 433. One end of the second connecting rod 433 is connected to the agitator wheel, and the other end of the agitator shaft 45 is rotatably connected to the bottom support member 44.

[0072] In this embodiment, the belt structure includes two pulleys 41 and a belt. The agitation shafts 45 on the two agitation modules 40 are each connected to a pulley 41, and the two pulleys 41 are connected by a belt.

[0073] like Figure 1 As shown, in this embodiment, the bottom support 44 has a bowl-shaped structure, and the edges of the bowl-shaped structure are connected to the second connecting rod 433 and the third connecting rod 432, so that the agitator can be stably supported.

[0074] In this embodiment, under the power output of the transmission module 50, the stirring shaft 45 rotates, thereby driving the stirring wheel 42 to rotate, thereby realizing the mechanical stirring of the liquid in the aeration tank.

[0075] Optionally, the transmission module 50 includes an impeller 51 and a bracket 53. The bracket 53 is connected to a limiting frame 20, the impeller 51 is rotatably connected to the bracket 53, and the impeller 51 is located on the inlet side. The impeller and an agitator are driven by a belt structure.

[0076] In this embodiment, the transmission module 50 further includes a transmission shaft, which is rotatably connected to the bracket 53. The impeller 51 is fixedly installed on the transmission shaft. Both the transmission shaft and one of the agitation shafts 45 are connected to pulleys, and the two pulleys are driven by a belt. When water enters the aeration tank, the water flow impacts the impeller 51 and drives the impeller 51 to rotate, which in turn drives the transmission shaft to rotate. Under the transmission of the pulleys and the belt, the agitation module rotates, thereby realizing the mechanical agitation of the liquid in the aeration tank.

[0077] Optionally, the end of the limiting frame 20 facing away from the bottom of the aeration tank is rod-shaped.

[0078] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A modular aeration device for aeration tanks, characterized in that, include: An aeration module, comprising aeration pipes and multiple aeration heads, wherein the aeration pipes are arranged in a radiating manner and the multiple aeration heads are spaced apart on the aeration pipes; An air supply module, comprising an air supply pipe and a support, wherein the air supply pipe and the aeration pipe are detachably connected, and the support connects the aeration pipe and the air supply pipe, and supports and reinforces the aeration pipe. Two agitation modules, each agitating module comprising an agitator and a four-sided support, wherein the agitator is rotatably mounted on the four-sided support, and the four-sided support is mounted on the gas transmission pipe; as well as A transmission module is connected to one of the agitation modules and is located at the water inlet, transmitting water flow power to the agitation module through the transmission module. Reinforcing members connect the portions of the multiple branch air tubes that are away from the main air tube. The agitation module also includes two vertical rods and a bottom support. The two vertical rods stand on the two gas distribution pipes. The four-sided support has a quadrilateral structure, and its four ends are respectively located on the second gas delivery section, the limiting frame, and the two vertical rods. The bottom support is installed on the side of the four-sided support near the gas distribution pipe and is connected to the agitation component. The two agitation modules are driven by a belt structure. The four-sided support includes four first connecting rods, second connecting rods and third connecting rods. The four first connecting rods are connected end to end, and the second connecting rods and the third connecting rods are respectively connected between two pairs of ends of the four-sided support. The bottom support has a bowl-shaped structure, and the edges of the bowl-shaped structure are connected to the second connecting rod and the third connecting rod. The end of the limiting frame that faces away from the bottom of the aeration tank is rod-shaped.

2. The modular aeration device as described in claim 1, characterized in that, The aeration pipe assembly includes a main air pipe, multiple load-bearing blocks, and multiple branch air pipes. The multiple branch air pipes are spaced apart on the main air pipe and are all connected to the main air pipe. Multiple aeration heads are spaced apart on the branch air pipes, and multiple load-bearing blocks are spaced apart on the branch air pipes.

3. The modular aeration device as described in claim 2, characterized in that, The main air pipe is defined to have a horizontal and a vertical orientation. The main air pipe has an extension end in the vertical orientation, and the extension end is detachably connected to the air supply pipe fitting through a first flange.

4. The modular aeration device as described in claim 2, characterized in that, It also includes multiple limiting frames, which are respectively disposed on both sides of the main air pipe. One end of multiple air distribution pipes is installed on the main air pipe at intervals, and the multiple air distribution pipes are arranged in parallel. The end of the air distribution pipe away from the main air pipe is detachably installed on the limiting frame.

5. The modular aeration device as described in claim 2, characterized in that, The gas transmission pipe is a bent pipe, and the bent portion of the gas transmission pipe is provided with a reinforcing member.

6. The modular aeration device as described in claim 5, characterized in that, The gas supply pipe includes a first gas supply section and a second gas supply section. One end of the first gas supply section is bent and detachably connected to one end of the second gas supply section via a second flange. The other end of the first gas supply section is detachably connected to the gas source component via a third flange. The second gas supply section is detachably connected to the extension end of the main gas pipe via a first flange. The first gas supply section and the second gas supply section are perpendicular to each other. The bracket is inclined and one end of the bracket is connected to the second gas supply section, and the other end is connected to the gas distribution pipe.

7. The modular aeration device as described in claim 6, characterized in that, The transmission module includes an impeller and a bracket. The bracket is connected to a limiting frame, and the impeller is rotatably connected to the bracket. The impeller is located on the inlet side, and the impeller and an agitator are driven by a belt structure.

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