Aeration pipe and aeration equipment using same

Abstract

The invention provides an aeration pipe and aeration equipment using the same. The aeration pipe comprises a pipe body, and the pipe body comprises at least one port and an aeration pipe section; the aeration pipe section comprises a planar side wall and a curved side wall which are annularly connected, and the contour line of the cross section of the curved side wall is curved; the at least one supporting part is at least arranged on the outer surface of the plane side wall; a plurality of first aeration holes are distributed in the plane side wall. The diaphragm is arranged on the pipe body in a sleeving manner and is supported by at least one supporting part to be in a tensioning state, so that a gap exists between the diaphragm and the plane side wall; and a plurality of second aeration holes which are communicated with the plurality of first aeration holes through gaps are at least formed in the area, corresponding to the plane side wall, of the diaphragm. The aerator has the advantages of avoiding the situation that the arc top of a traditional tubular aerator exhausts air intensively and the two sides gradually disperse and exhaust air is less, improving the aeration uniformity and effect of the aeration pipe, and improving the sewage treatment effect; a gap is formed between the membrane and the first aeration hole of the aeration pipe section, so that the condition that the membrane is attached to the surface of the pipe body is avoided, and aeration is performed again.

Description

Technical Field

[0001] The present disclosure relates to the field of sewage treatment, and in particular to an aeration tube and an aeration device using the same. Background Art

[0002] In the water treatment industry, aeration and oxygenation is a very popular practice and is the core process of aerobic biodegradation of wastewater. Aeration is the process of forcibly transferring oxygen in the air to the liquid, with the purpose of obtaining sufficient dissolved oxygen. In addition, aeration also prevents the suspended matter in the pool from sinking and strengthens the contact between the organic matter in the pool and the microorganisms and dissolved oxygen. This ensures that the microorganisms in the pool can oxidize and decompose the organic matter in the sewage under the condition of sufficient dissolved oxygen. Compared with ordinary sewage treatment technology, aerated biological filters have certain advantages and outstanding characteristics.

[0003] However, the existing aeration pipes have the following problems:

[0004] 1. When aerating, the traditional tubular aerator has dense air discharge at the top of the arc and gradually disperses less air at both sides;

[0005] 2. When the aeration of traditional tubular aerator stops, the membrane will be tightly attached to the surface of the tube body. In addition, the sludge will form a certain adhesive effect after being dried by the residual heat of aeration, which will completely bond the membrane to the surface of the tube body, making aeration no longer possible. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present disclosure is to provide an aeration tube and an aeration device used therein to solve the problems in the related art.

[0007] The first aspect of the present disclosure provides an aeration tube, comprising:

[0008] The pipe body comprises at least one port and an aeration pipe section; the aeration pipe section comprises a plane side wall connected in an annular manner and a curved side wall whose cross-sectional contour line is a curved line;

[0009] At least one supporting portion is at least arranged on the outer surface of the plane side wall; a plurality of first aeration holes are distributed on the plane side wall;

[0010] A diaphragm is sleeved on the tube body and supported by the at least one supporting portion to a tensioned state so as to have a gap between it and the plane side wall; a plurality of second aeration holes connected to the plurality of first aeration holes through the gap are formed on the diaphragm at least in an area corresponding to the plane side wall.

[0011] In an embodiment of the first aspect, the support portion is implemented as one and is disposed in the middle of the planar side wall.

[0012] In an embodiment of the first aspect, the number of the supporting portions is two; the two supporting portions are formed on the planar side wall at intervals along a width direction of the curved side wall.

[0013] In an embodiment of the first aspect, a supporting portion is provided at each of two ends of the planar side wall along a width direction of the curved side wall.

[0014] In an embodiment of the first aspect, there are a plurality of support portions; the plurality of support portions are formed on the planar side wall in a spaced-apart manner along a width direction of the curved side wall.

[0015] In an embodiment of the first aspect, a length of the support portion is the same as a length of the aeration pipe segment.

[0016] In an embodiment of the first aspect, the membrane is in close contact with other side walls of the tube body except the planar side wall; and / or the gap can only communicate with the outside through the second aeration hole.

[0017] In an embodiment of the first aspect, the tube body comprises two ports; the two ports are configured into shapes capable of cooperative communication.

[0018] In an embodiment of the first aspect, the aeration pipe includes a connecting pipe, the connecting pipe includes a communicating cavity and a plurality of connecting ports communicating with the communicating cavity; the port is communicated with one of the connecting ports.

[0019] A second aspect of the present disclosure provides an aeration device, comprising the aeration tube.

[0020] As described above, an aeration tube and an aeration device used therein are provided in an embodiment of the present disclosure, including a tube body and a diaphragm. The tube body includes at least one port, an aeration tube section and at least one support portion. The aeration tube section includes a planar side wall connected in an annular manner and a curved side wall whose cross-sectional contour line is a curved shape. The at least one support portion is at least arranged on the outer surface of the planar side wall; a plurality of first aeration holes are distributed on the planar side wall. The diaphragm is sleeved on the tube body and is supported by the at least one support portion to a tensioned state so that there is a gap between the diaphragm and the planar side wall; a plurality of second aeration holes connected to the plurality of first aeration holes through the gap are formed on the diaphragm at least in an area corresponding to the planar side wall. Through the above-mentioned arrangement, the situation in which the air outlet at the top of the arc of the traditional tubular aerator is dense while the air outlet at the two sides is gradually dispersed and less can be avoided, so as to improve the aeration uniformity of the aeration pipe, improve the aeration effect, and thus improve the sewage treatment effect; secondly, the arrangement of the support part can also make a certain gap between the diaphragm and the first aeration hole of the aeration pipe section, so as to avoid the situation in which the diaphragm is closely attached to the surface of the pipe body when the aeration stops running, thereby facilitating aeration again. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure shows a schematic diagram of a structure in which the aeration tube does not contain a membrane in an embodiment of the present disclosure;

[0022] Figure 2 , which is a cross-sectional schematic diagram of a membrane sheet on an aeration tube in an embodiment of the present disclosure;

[0023] Figure 3 FIG. 2 is a cross-sectional schematic diagram showing that the supporting portion is implemented as two in the present disclosure;

[0024] Figure 4 FIG. 2 is a cross-sectional schematic diagram showing that the supporting portion in the present disclosure is implemented as a plurality of supporting portions;

[0025] Figure 5 , which is a cross-sectional schematic diagram of the support portion in the present disclosure being implemented as one;

[0026] Figure 6 The present disclosure is shown in Figure 2 Schematic cross-sectional view of AA in the figure;

[0027] Figure 7 FIG. 4 is a schematic cross-sectional view of another embodiment of the present disclosure in which the supporting portion is implemented as two. DETAILED DESCRIPTION

[0028] The following is an explanation of the embodiments of the present disclosure by specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the information disclosed by the present disclosure. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in the present disclosure can also be modified or changed in various ways according to different viewpoints and application modules without departing from the spirit of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0029] The following is a detailed description of the embodiments of the present disclosure with reference to the accompanying drawings so that those skilled in the art can easily implement the present disclosure. The present disclosure can be embodied in many different forms and is not limited to the embodiments described herein.

[0030] In the representations of the present disclosure, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials or characteristics represented may be combined in any one or a group of embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples represented in the present disclosure and the features of different embodiments or examples, unless they are mutually contradictory.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of the present disclosure, "a group" means two or more, unless otherwise clearly and specifically defined.

[0032] In order to clearly describe the present disclosure, components not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

[0033] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0034] Although the terms first, second, etc. are used to represent various elements in this article in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, modules, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or a group of other features, steps, operations, elements, modules, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0035] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present disclosure. The singular form used herein also includes the plural form unless the sentence clearly indicates the contrary meaning. The meaning of "including" used in the specification is to specify specific characteristics, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0036] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which the present disclosure belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with relevant technical literature and the message of the present disclosure, and shall not be overly interpreted as ideal or very formal meanings unless defined.

[0037] In the water treatment industry, aeration and oxygenation is a very popular practice and is the core process of aerobic biodegradation of wastewater. Aeration is the process of forcibly transferring oxygen in the air to the liquid, with the purpose of obtaining sufficient dissolved oxygen. In addition, aeration also prevents the suspended matter in the pool from sinking and strengthens the contact between the organic matter in the pool and the microorganisms and dissolved oxygen. This ensures that the microorganisms in the pool can oxidize and decompose the organic matter in the sewage under the condition of sufficient dissolved oxygen. Compared with ordinary sewage treatment technology, aerated biological filters have certain advantages and outstanding characteristics.

[0038] However, the existing aeration tubes have the following problems: 1. During aeration, the traditional tubular aerator has dense air outlet at the top of the arc, while the air outlet on both sides gradually disperses and becomes less; 2. When the aeration of the traditional tubular aerator stops, the diaphragm will fit tightly to the surface of the tube body, and the sludge will form a certain adhesive effect after being dried by the residual heat of aeration, which will completely bond the diaphragm to the surface of the tube body, making aeration no longer possible.

[0039] Based on the above problems, the present invention provides an aeration tube having a flat side wall for forming a first aeration hole, thereby avoiding the situation in which the air outlet of the traditional tubular aerator is dense at the top of the arc and the air outlet is gradually dispersed and less on both sides. At the same time, when using aeration tubes of the same specifications, a larger aeration area can be provided to improve the aeration uniformity of the aeration tube, improve the aeration effect, and thus improve the sewage treatment effect. Secondly, the setting of the support portion can also allow a certain gap to exist between the diaphragm and the first aeration hole of the aeration tube section, thereby avoiding the situation in which the diaphragm is closely attached to the surface of the tube body when the aeration stops running, thereby facilitating aeration again.

[0040] Figure 1 The figure shows a schematic diagram of the structure in which the aeration tube does not contain a membrane in an embodiment of the present disclosure. Figure 2The figure shows a cross-sectional view of a membrane sheet on an aeration tube in an embodiment of the present disclosure. Figure 1 and Figure 2 In the example, the aeration tube includes a tube body 10 and a membrane 20. The tube body 10 includes at least one port 101 and an aeration tube section 11. The aeration tube section 11 includes a plane side wall 111 connected in an annular manner and a curved side wall 112 whose cross-sectional contour line is a curved surface; at least one support portion 12 is at least arranged on the outer surface of the plane side wall 111; and a plurality of first aeration holes 102 are distributed on the plane side wall 111.

[0041] The diaphragm 20 is sleeved on the tube body 10 and is supported by at least one of the support portions 12 to a tensioned state so that a gap 21 ( Figure 3 The membrane 20 is formed with a plurality of first aeration holes 102 ( Figure 3 A plurality of second aeration holes 201 (shown in FIG. 2 ) connected via the gap 21 Figure 3 ).

[0042] Through the above-mentioned arrangement, the situation in which the air outlet at the top of the arc of the traditional tubular aerator is dense while the air outlet at the two sides is gradually dispersed and less can be avoided, so as to improve the aeration uniformity of the aeration tube, improve the aeration effect, and thus improve the sewage treatment effect; secondly, the arrangement of the support portion 12 can also allow a certain gap 21 to exist between the diaphragm 20 and the first aeration hole 102 of the aeration pipe section 11, so as to avoid the situation in which the diaphragm 20 is closely attached to the surface of the pipe body 10 when the aeration stops running, thereby facilitating aeration again.

[0043] The support portion 12 may be implemented as one of the following embodiments.

[0044] Figure 3 The figure shows a cross-sectional view of the support part in the present disclosure being implemented as two parts. Figure 3 In the example, the support portion 12A is implemented as two; the two support portions 12A are formed on the plane side wall 111 at intervals along the width direction of the curved side wall 112. Further exemplarily, one support portion 12A is provided at each end of the plane side wall 111 along the width direction of the curved side wall 112. The advantage of such a setting is that the portion of the membrane 20 aligned with the plane side wall 111 can be in a planar state, thereby avoiding the dispersion of the orientation of the second aeration hole 201 due to the non-planar cross section of the membrane 20 aligned with the plane side wall 111, resulting in the dispersion and unevenness of the gas flowing out of the second aeration hole 201.

[0045] exist Figure 3In the example, the corners of the two support portions 12A at the end portions that contact the diaphragm 20 are rounded, and part of the top area is flat. In this way, the diaphragm 20 can be prevented from being broken due to concentrated force, and the diaphragm 20 can be supported by the flat area to prevent the diaphragm 20 from sinking inward.

[0046] exist Figure 3 In the example, the curve is implemented as an arc. The advantage of this arrangement is that the curved side wall 112 implemented as an arc can make the diaphragm 20 sleeved on the tube body 10 more evenly stressed when being tensioned, thereby preventing the diaphragm 20 from being damaged by the curved side wall 112 due to uneven stress. In another embodiment, the contour line of the cross section of the curved side wall 112 is implemented as a wave line or a broken line, but is not limited thereto.

[0047] Figure 4 The figure shows a cross-sectional view of the support part in the present disclosure being implemented as a plurality of parts. Figure 4 In the example, there are a plurality of support portions 12B; the plurality of support portions 12B are formed on the plane side wall 111 at intervals along the width direction of the curved side wall 112. Further exemplarily, one support portion 12B is provided at each of the two ends of the plane side wall 111 along the width direction of the curved side wall 112. The remaining support portions 12B are spaced between the two support portions 12B at the ends. The advantage of such a setting is that it can avoid the situation where the diaphragm 20 in the middle area is sunken to fit the plane side wall 111 due to lack of support due to the large distance between the two support portions 12B at the ends, thereby further improving the aeration effect and preventing the diaphragm 20 from fitting the plane side wall 111.

[0048] exist Figure 4 In the example, the corners of the two support portions 12B located at the ends that contact the diaphragm 20 are implemented as rounded corners, while part of the top area is implemented as a plane; the top of the remaining support portion 12B between the two support portions 12B located at the ends is implemented as a plane to improve the support for the middle area of ​​the diaphragm 20.

[0049] Figure 5 The figure shows a cross-sectional view of the support part in the present disclosure. Figure 5In the example, the support portion 12C is implemented as one and is disposed in the middle of the plane side wall 111. For example, the support portion 12C is implemented as a long strip and extends along the length direction of the plane side wall 111, so that the gap 21 between the diaphragm 20 and the plane side wall 111 is divided into two sub-gaps 21 that are axially symmetrical with the one support portion 12C. The gas in the tube body 10 enters the two sub-gaps 21 through the first aeration holes 102, and then flows to the sewage pool through the second aeration holes 201 corresponding to each of the sub-gaps 21, thereby achieving aeration treatment of the sewage. In another embodiment, the support portion 12C is implemented as a hemispherical shape and is disposed at the intersection of multiple diagonal lines of the plane side wall 111.

[0050] exist Figure 5 In the example, the top of the region where the support portion 12 contacts the diaphragm 20 is implemented with an arc-shaped contour line of the cross section to fit the tensioned diaphragm 20 and prevent the diaphragm 20 from being broken due to concentrated force.

[0051] exist Figure 3 , 4 and Figure 5 In the example, the length of the support portion 12 is the same as the length of the aeration pipe section 11 , so as to fully support the membrane 20 corresponding to the plane side wall 111 , further improving the aeration effect and preventing the membrane 20 from sticking to the plane side wall 111 .

[0052] exist Figure 2 In the example, the pipe body 10 is implemented to have two ports 101, and the aeration pipe section 11 is connected between the two ports 101. Further exemplarily, the port 101 is implemented in a circular ring shape to facilitate communication with other pipelines, such as an air supply pipeline.

[0053] Exemplarily, the diaphragm 20 is in close contact with the other side walls of the tube body 10 except the planar side wall 111. Exemplarily, the diaphragm 20 is implemented as an elastic annular diaphragm 20. It can be understood that after the diaphragm 20 is sleeved on the outer surface of the tube body 10, it is in close contact with the other side walls of the tube body 10 except the planar side wall 111 due to its own elastic deformation force. The benefit of the diaphragm 20 being in close contact with the tube body 10 is to reduce the gap 21 between the diaphragm 20 and the tube body 10, so as to reduce the amount of gas in the gap overflowing into the gap 21 between the diaphragm 20 and the tube body 10.

[0054] Figure 6 The present disclosure is shown in Figure 2 AA is a cross-sectional view of the Figure 2 and Figure 6In the example, the gap 21 can only communicate with the outside through the second aeration hole 201. Exemplarily, the aeration tube includes two pairs of clamps 30, each pair of the clamps 30 is annularly spliced ​​and arranged at one of the ports 101 of the tube body 10, and the diaphragm 20 located on the outer wall of the port 101 is clamped by a threaded connection, so that the diaphragm 20 located on the outer wall of the port 101 clamps the outer wall of the port 101 under the action of the clamps 30. Thereby, the gas in the gap 21 can only flow to the outside through the second aeration hole 201 for aeration.

[0055] exist Figure 2 In the example, the two ports 101 are configured to be in a shape that can be connected in a coordinated manner. For example, an outer wall of one port 101 of the tube body 10 is provided with an external thread, and an inner wall of the other port is provided with an internal thread that is screwed to the external thread. In this way, the user can assemble multiple tube bodies 10 by threaded connection to meet different usage requirements. In another embodiment, a flange is coaxially provided at each port 101 of the tube body 10, and the two tube bodies 10 are fixedly spliced ​​by the flange.

[0056] Back to Figure 1 In the example, the aeration pipe also includes a connecting pipe 40, and the connecting pipe 40 includes a connecting cavity 401 and a plurality of connecting ports 402 connected to the connecting cavity 401; the port 101 is connected to one of the connecting ports 402. It can be understood by those skilled in the art that the remaining connecting ports 402 are used to connect the remaining aeration pipes and the air supply pipeline. Further exemplarily, the connecting pipe 40 includes two spliced ​​arc tubes 41, and the two arc tubes 41 form a complete connecting pipe after being spliced. The pipe openings at both ends of the connecting pipe are implemented as two of the connecting ports 402, and the remaining connecting ports 402 are formed on the side walls of the arc tube 41.

[0057] Exemplarily, the length of the diaphragm 20 that is close to the curved side wall 112 is half of the total length of the diaphragm 20. Those skilled in the art will appreciate that this can ensure that the tension of the diaphragm 20 at all positions is consistent, thereby preventing the diaphragm 20 from being damaged. Figure 7 FIG. 1 is a cross-sectional view of another embodiment of the present disclosure in which the supporting portion is implemented as two. Figure 7In the example, the support portion 12D at the end is formed by extending the plane side wall 111 upward. In this embodiment, the curved side wall 112 is a semicircular side wall, so the height of each support portion 12D is half of the difference between the arc length of the curved side wall 112 and the width of the plane side wall 111 in the cross section of the aeration pipe section 11. That is, the height of each support portion 12D is (π-R) / 2, where R is the radius of the semicircular curved side wall 112. In this way, the length of the membrane 20 that is tightly attached to the curved side wall 112 is half of the total length of the membrane 20.

[0058] In another embodiment of the present disclosure, an aeration device is provided, wherein the aeration device comprises the aeration pipe. The aeration device is connected to the aeration pipe via the connecting pipe 40 .

[0059] In summary, an aeration tube is provided in an embodiment of the present disclosure, and the aeration tube includes a tube body and a diaphragm. The tube body includes at least one port, an aeration tube section and at least one support portion. The aeration tube section includes a planar side wall connected in an annular manner and a curved side wall whose cross-sectional contour line is a curved shape. The at least one support portion is at least arranged on the outer surface of the planar side wall; a plurality of first aeration holes are distributed on the planar side wall. The diaphragm is sleeved on the tube body and is supported by the at least one support portion to a tensioned state so that there is a gap between the diaphragm and the planar side wall; a plurality of second aeration holes connected to the plurality of first aeration holes through the gap are formed on the diaphragm at least in an area corresponding to the planar side wall. The present disclosure provides an aeration pipe, in which a first aeration hole is formed on a plane side wall of an aeration pipe section, thereby avoiding the situation in which the air outlet at the top of the circular arc of a traditional tubular aerator is dense while the air outlet at both sides is gradually dispersed and less, so as to improve the aeration uniformity of the aeration pipe, improve the aeration effect, and further improve the sewage treatment effect; secondly, the setting of the support portion can also allow a certain gap to exist between the diaphragm and the first aeration hole of the aeration pipe section, thereby avoiding the situation in which the diaphragm is closely attached to the surface of the pipe body when the aeration stops running, thereby facilitating aeration again.

[0060] The above embodiments are merely illustrative of the principles and effects of the present disclosure, and are not intended to limit the present disclosure. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present disclosure. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present disclosure shall still be covered by the protection scope of the present disclosure.

Claims

1. An aeration tube, characterized in that: include: The pipe body comprises at least one port and an aeration pipe section; the aeration pipe section comprises a plane side wall connected in an annular manner and a curved side wall whose cross-sectional contour line is a curved line; At least one supporting portion is at least arranged on the outer surface of the plane side wall; a plurality of first aeration holes are distributed on the plane side wall; A diaphragm is sleeved on the tube body and supported by the at least one supporting portion to a tensioned state so as to have a gap between it and the plane side wall; a plurality of second aeration holes connected to the plurality of first aeration holes through the gap are formed on the diaphragm at least in an area corresponding to the plane side wall.

2. The aeration tube according to claim 1, characterized in that: The supporting portion is implemented as one and is arranged in the middle of the plane side wall.

3. The aeration tube according to claim 1, characterized in that: The number of the supporting parts is two; the two supporting parts are formed on the planar side wall at intervals along the width direction of the curved side wall.

4. The aeration tube according to claim 3, characterized in that: A supporting portion is respectively provided at two end portions of the plane side wall along the width direction of the curved side wall.

5. The aeration tube according to claim 1, characterized in that: There are a plurality of support portions, and the plurality of support portions are formed on the planar side wall in a distributed manner along the width direction of the curved side wall.

6. The aeration tube according to claim 1, characterized in that: The length of the support portion is the same as the length of the aeration pipe section.

7. The aeration tube according to claim 1, characterized in that: The membrane is in close contact with the side walls of the tube body except the planar side wall; and / or the gap can only communicate with the outside through the second aeration hole.

8. The aeration tube according to claim 1, characterized in that: The tube body includes two ports; the two ports are configured into shapes capable of being matched and communicated.

9. The aeration tube according to claim 1, characterized in that: The aeration pipe includes a connecting pipe, and the connecting pipe includes a communicating cavity and a plurality of connecting ports communicating with the communicating cavity; the port is communicated with one of the connecting ports.

10. An aeration device, characterized in that: include: The aeration tube according to any one of claims 1 to 9.

Images