Aerator and aeration equipment with same

Abstract

The utility model provides an aeration machine and aeration equipment with the same, the aeration machine comprises: a center cylinder, the center cylinder is vertically arranged and comprises a first half cylinder and a second half cylinder, the first half cylinder and the second half cylinder are detachably connected, and the first half cylinder and the second half cylinder enclose to form a ring; the air cap is arranged at the lower end of the central cylinder; the aeration rod is arranged in the central cylinder and the air cap in a penetrating manner; the impeller is positioned on the lower side of the air cap and is connected with the lower end of the aeration rod. According to the aeration machine disclosed by the utility model, the central cylinder is divided into the first half cylinder and the second half cylinder, so that the interior of the central cylinder can be conveniently and deeply cleaned, the cleaning steps can be saved, the cleaning time can be shortened, meanwhile, the cleaning effect can be ensured, the cleaning period of the central cylinder can be prolonged, and the maintenance time and the maintenance cost can be further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of aeration equipment manufacturing, in particular to an aerator and aeration equipment having the same. Background Art

[0002] In the existing aerator, when the aerator is performing sewage treatment work, the sediment in the sewage is easy to crystallize inside the central tube. When cleaning the inside of the central tube, the central tube needs to be lifted as a whole before cleaning. The cleaning steps are cumbersome. At the same time, the internal space of the central tube is small, which is not conducive to cleaning the inside of the central tube, resulting in cleaning difficulties and high cleaning costs. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an aerator, which can facilitate the cleaning of the central tube.

[0004] The aerator according to the embodiment of the utility model includes: a central tube, which is vertically arranged and includes a first half-tube and a second half-tube, the first half-tube and the second half-tube are detachably connected, and the first half-tube and the second half-tube form a ring shape; a wind hood, which is arranged at the lower end of the central tube; an aeration rod, which is inserted into the central tube and the wind hood; and an impeller, which is located at the lower side of the wind hood and connected to the lower end of the aeration rod.

[0005] According to the aerator of the utility model, the central cylinder is set as the first half cylinder and the second half cylinder, which can facilitate deep cleaning of the interior of the central cylinder, thereby saving cleaning steps and reducing cleaning time. At the same time, it can ensure the cleaning effect and extend the cleaning cycle of the central cylinder, thereby reducing inspection time and maintenance costs.

[0006] According to some embodiments of the present invention, the first half cylinder and the second half cylinder have arc shapes in cross sections perpendicular to the axis of the central cylinder; and / or the central cylinder is a cylindrical cylinder; and / or the first half cylinder and the second half cylinder are symmetrically arranged.

[0007] According to some embodiments of the utility model, along the circumferential direction of the central tube, both ends of the first half tube are provided with first flanges extending outward, and both ends of the second half tube are provided with second flanges extending outward, and the two first flanges at the two ends of the first half tube are respectively detachably connected to the two second flanges at the two ends of the second half tube.

[0008] According to some embodiments of the utility model, the aerator further includes: a bracket, which is arranged at the upper end of the central tube and connected to the central tube via fasteners; and a driving mechanism, which is arranged on the bracket and connected to the upper end of the aeration rod, and is used to drive the aeration rod to rotate.

[0009] According to some embodiments of the utility model, the aerator is disposed in an aeration tank, the wind hood is fixed in the aeration tank, and the central tube is supported on the upper end of the wind hood and is detachable.

[0010] According to some optional embodiments of the utility model, a first supporting edge extending along the circumferential direction of the hood is provided on the inner circumferential wall of the hood, and a second supporting edge extending along the circumferential direction of the center tube is provided on the outer circumferential wall of the lower end of the center tube, and the second supporting edge is supported on the first supporting edge.

[0011] According to some embodiments of the utility model, a plurality of support plates are provided in the aeration tank, and the plurality of support plates are arranged at intervals along the circumferential direction of the aeration tank, one end of the support plate is connected to the inner circumferential wall of the aeration tank, and the other end cooperates with the wind hood to support the wind hood.

[0012] According to some optional embodiments of the utility model, the hood includes: a main body portion, which is annular and the center tube is supported on the upper end of the main body portion; a baffle portion, which is horizontally arranged and is sleeved on the lower end of the main body portion; reinforcing ribs, which are arranged between the outer peripheral wall of the main body portion and the upper surface of the baffle portion and are connected to the main body portion and the baffle portion, and the reinforcing ribs are a plurality of ribs spaced apart along the circumferential direction of the main body portion, and at least part of the reinforcing ribs have an end that is away from the central axis of the main body portion that extends beyond the baffle portion and is supported on the support plate.

[0013] According to some optional embodiments of the utility model, a lap groove is provided on the upper surface of one end of the support plate close to the hood, and one end of the reinforcing rib away from the central axis of the main body is inserted into the lap groove.

[0014] The aeration equipment according to the second aspect of the embodiment of the utility model includes: an aeration tank; and the aerator according to the first aspect of the utility model, wherein the central tube extends into the aeration tank.

[0015] According to the aeration equipment of the utility model, by setting the aerator of the first aspect embodiment mentioned above and setting the central cylinder as the first half cylinder and the second half cylinder, the interior of the central cylinder can be easily cleaned in depth, thereby saving cleaning steps and reducing cleaning time. At the same time, the cleaning effect can be guaranteed, the cleaning cycle of the central cylinder can be extended, and the inspection time and maintenance costs can be reduced.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of an aeration device according to an embodiment of the second aspect of the utility model;

[0018] Figure 2 yes Figure 1 A schematic diagram of a partial structure of an aerator at an angle shown in FIG.

[0019] Figure 3 yes Figure 2 A schematic diagram of another angle of the partial structure of the aerator shown in FIG.

[0020] Figure 4 yes Figure 3 A schematic diagram of the first half of the barrel shown in ;

[0021] Figure 5 yes Figure 3 A schematic diagram of the hood shown in ;

[0022] Figure 6 yes Figure 3 Schematic diagram of the support plate shown in .

[0023] Reference numerals:

[0024] 100. Aerator;

[0025] 10. Center tube; 11. First half tube; 111. First flange; 12. Second half tube; 13. Second supporting edge;

[0026] 20. hood; 21. main body; 211. first supporting edge; 22. baffle; 23. reinforcing rib;

[0027] 30. Aeration rod;

[0028] 40. Impeller;

[0029] 50. Bracket;

[0030] 60. Fasteners;

[0031] 200, aeration tank; 210, support plate; 220, lap groove;

[0032] 1000. Aeration equipment. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] Please refer to the following Figure 1-6 An aerator 100 according to an embodiment of the present invention is described.

[0035] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 According to an embodiment of the utility model, the aerator 100 includes: a central tube 10, a hood 20, an aeration rod 30 and an impeller 40.

[0036] Specifically, the central tube 10 is vertically arranged and includes a first half tube 11 and a second half tube 12, the first half tube 11 and the second half tube 12 are detachably connected, and the first half tube 11 and the second half tube 12 are surrounded by a ring; the hood 20 is arranged at the lower end of the central tube 10 (such as Figure 1 The aeration rod 30 is disposed in the central tube 10 and the hood 20; the impeller 40 is located at the lower side of the hood 20 (as shown in FIG. Figure 1 The lower side of the hood 20 shown in FIG. Figure 1 The lower end of the aeration rod 30 shown is connected.

[0037] For example, Figure 1 , Figure 2 and Figure 3 As shown, the first half cylinder 11 is semicircular, the second half cylinder 12 is semicircular, and the first half cylinder 11 and the second half cylinder 12 enclose a hollow cylindrical central cylinder 10. The aeration rod 30 is vertically arranged, and the aeration rod 30 is arranged in the central cylinder 10 and the lower end of the aeration rod 30 passes through the wind hood 20 and is connected to the impeller 40.

[0038] The aerator 100 is used for sewage treatment in a sulfuric acid workshop. Arsenic ions and ferrous ions exist in the sewage of the sulfuric acid workshop. To remove the arsenic ions, the ferrous ions in the solution need to be oxidized into ferric iron by the action of the aerator 100. The ferric iron and arsenate are co-precipitated to remove arsenic. In the process of removing arsenic ions, when the aerator 100 is in operation, the lower end of the aerator 100 is inserted into the sewage, the aeration rod 30 rotates, the aeration rod 30 drives the impeller 40 to rotate, the impeller 40 rotates to generate negative pressure, and the air enters the sewage through the central tube 10. After the air enters, the ferrous ions are oxidized to ferric iron, thereby achieving the effect of removing arsenic. Because the aerator 100 works for a long time, the arsenic ions in the sewage are easily attached to the inside of the central tube 10 after crystallization with the ferric ions, so that the inside of the central tube 10 needs to be cleaned regularly.

[0039] In the aerator 100 of the present invention, the central cylinder 10 is configured as a first half cylinder 11 and a second half cylinder 12. After the first half cylinder 11 and the second half cylinder 12 are separated, the interior of the central cylinder 10 can be cleaned. Compared with the prior art in which the central cylinder 10 is not configured as a plurality of split parts, resulting in the central cylinder 10 needing to be hoisted as a whole before cleaning the central cylinder 10, the central cylinder 10 of the present embodiment does not need to be hoisted as a whole, and the first half cylinder 11 and the second half cylinder 12 can be directly separated in situ to clean the interior of the central cylinder 10, thereby saving cleaning steps, reducing cleaning time, and reducing cleaning costs. At the same time, after the first half cylinder 11 and the second half cylinder 12 are separated, the aeration rod 30 no longer affects the cleaning operation space, and the cleaning operation surface is large, so the interior of the central cylinder 10 can be deeply cleaned, thereby ensuring the cleaning effect, avoiding sediment clogging the central cylinder 10 and affecting the aeration effect of the aerator 100, and extending the cleaning cycle of the central cylinder 10, reducing maintenance time and maintenance costs.

[0040] According to the aerator 100 of the embodiment of the utility model, the central cylinder 10 is set as the first half cylinder 11 and the second half cylinder 12, which can facilitate deep cleaning of the interior of the central cylinder 10, thereby saving cleaning steps and reducing cleaning time. At the same time, the cleaning effect can be guaranteed, the cleaning cycle of the central cylinder 10 can be extended, and the inspection time and maintenance cost can be reduced.

[0041] According to some embodiments of the present invention, referring to Figure 1 , Figure 3 and Figure 4 The first half cylinder 11 and the second half cylinder 12 are in the shape of an arc in the cross section perpendicular to the axis of the central cylinder 10. Thus, by defining the cross section of the first half cylinder 11 and the second half cylinder 12, it is ensured that the first half cylinder 11 and the second half cylinder 12 can be spliced ​​into a hollow cylinder, thereby making the structure of the central cylinder 10 reasonable and facilitating the installation of the central cylinder 10.

[0042] For example, Figure 1 , Figure 3 and Figure 4 As shown, the first half cylinder 11 and the second half cylinder 12 are semicircular in shape in the cross section perpendicular to the axis direction of the central cylinder 10 . This structure is simple and convenient for processing the first half cylinder 11 and the second half cylinder 12 .

[0043] Furthermore, if Figure 1 , Figure 3 and Figure 4 As shown, the central tube 10 is a cylindrical tube. Thus, this central tube 10 has a reasonable structure and is easy to install.

[0044] Furthermore, if Figure 1 , Figure 3 and Figure 4 As shown, the first half cylinder 11 and the second half cylinder 12 are symmetrically arranged. Therefore, this arrangement has a simple structure and can facilitate the assembly of the first half cylinder 11 and the second half cylinder 12.

[0045] According to some embodiments of the present invention, referring to Figure 1 , Figure 2 and Figure 3 , along the circumferential direction of the central tube 10, the two ends of the first half tube 11 (such as Figure 2 The left and right ends of the first half cylinder 11 shown are provided with first flanges 111 extending outward, and the two ends of the second half cylinder 12 are provided with second flanges extending outward. The two first flanges 111 at the two ends of the first half cylinder 11 are respectively detachably connected to the two second flanges at the two ends of the second half cylinder 12.

[0046] In this way, the first flange 111 and the second flange can facilitate the connection between the first half cylinder 11 and the second half cylinder 12, thereby improving the assembly speed and saving installation time. At the same time, the first flange 111 and the second flange both extend outward and do not occupy the space in the central cylinder 10, thereby preventing the first flange 111 and the second flange from affecting the rotation of the aeration rod 30. In addition, the first half cylinder 11 and the second half cylinder 12 are detachably connected, thereby facilitating the maintenance and replacement of the central cylinder 10.

[0047] For example, Figure 1 , Figure 2 and Figure 3 As shown, the left and right ends of the first half cylinder 11 are provided with first flanges 111 extending outwards, the first flange 111 at the left end of the first half cylinder 11 extends to the left, and the first flange 111 at the right end of the first half cylinder 11 extends to the right, and the left and right ends of the second half cylinder 12 are provided with second flanges extending outwards, the second flange at the left end of the second half cylinder 12 extends to the left, and the second flange at the right end of the second half cylinder 12 extends to the right. Preferably, the first flange 111 and the second flange are connected by bolts, so that the connection strength of the first half cylinder 11 and the second half cylinder 12 can be ensured, and the first half cylinder 11 and the second half cylinder 12 can be prevented from being separated.

[0048] According to some embodiments of the present invention, referring to Figure 1 The aerator 100 further includes a support 50 and a driving mechanism. The support 50 is disposed at the upper end of the central tube 10 (eg Figure 1 The drive mechanism is disposed on the bracket 50 and connected to the upper end of the aeration rod 30 (as shown in FIG. Figure 1 The upper end of the aeration rod 30 shown in the figure is connected to drive the aeration rod 30 to rotate.

[0049] In this way, the aerator 100 is connected to the bracket 50 through the fastener 60. This fixing form has a simple structure and is easy to operate, thereby improving the assembly efficiency. At the same time, the driving structure can drive the aeration rod 30 to rotate, so that the aerator 100 can work normally. Preferably, the fastener 60 is a bolt, which has a simple structure, low cost, and is easy to use in batches.

[0050] According to some embodiments of the present invention, referring to Figure 1 and Figure 3 The aerator 100 is disposed in the aeration tank 200, the hood 20 is fixed in the aeration tank 200, and the central tube 10 is supported on the upper end of the hood 20 (such as Figure 3 The hood 20 is a detachable structure. Thus, the hood 20 provides support for the central tube 10. Compared with the prior art solution in which the hood 20 cannot provide support for the central tube 10, the hood 20 of this embodiment can share the gravity of the central tube 10, thereby reducing the force on the fastener 60, and further effectively preventing the fastener 60 from breaking and causing the central tube 10 to fall off from the bracket 50. In addition, the central tube 10 is detachable from the hood 20. When cleaning the central tube 10, it is only necessary to hoist the central tube 10 from the aeration tank 200, which can reduce the hoisting power of the hoisting equipment and save hoisting costs.

[0051] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 5 The inner peripheral wall of the hood 20 is provided with a first supporting edge 211 extending along the circumferential direction of the hood 20. The lower end of the central tube 10 (such as Figure 3 The outer peripheral wall of the lower end of the central tube 10 shown in the figure is provided with a second supporting edge 13 extending in the circumferential direction of the central tube 10, and the second supporting edge 13 is supported on the first supporting edge 211. Therefore, the first supporting edge 211 and the second supporting edge 13 are provided, which can facilitate the support of the central tube 10 on the hood 20, thereby facilitating the connection between the central tube 10 and the hood 20. At the same time, the first supporting edge 211 and the second supporting edge 13 can provide guidance for the installation of the central tube 10, so as to prevent the central tube 10 from tilting when it is not installed in place.

[0052] For example, Figure 3 and Figure 5 As shown, an annular first supporting edge 211 is provided on the inner peripheral wall of the upper end of the hood 20, and an annular second supporting edge 13 is provided on the outer peripheral wall of the lower end of the center tube 10. When the center tube 10 and the hood 20 are matched, the lower end of the center tube 10 extends into the inner wall of the hood 20 until the second supporting edge 13 is supported on the first supporting edge 211, and the matching of the center tube 10 and the hood 20 is completed.

[0053] According to some embodiments of the present invention, referring to Figure 1 and Figure 3A plurality of support plates 210 are provided in the aeration tank 200, that is, two, three, four or more support plates 210 are provided in the aeration tank 200, and the plurality of support plates 210 are arranged at intervals along the circumferential direction of the aeration tank 200, one end of the support plate 210 is connected to the inner circumferential wall of the aeration tank 200, and the other end cooperates with the wind hood 20 to support the wind hood 20.

[0054] In this way, multiple support plates 210 can ensure the stability of the support plates 210 in supporting the wind hood 20, prevent the wind hood 20 from tilting or tilting, and thus ensure that the wind hood 20 can firmly support the central tube 10. At the same time, the support plates 210 are connected to the inner circumferential wall of the aeration tank 200, so that the gravity of the central tube 10 can be transmitted to the inner circumferential wall of the aeration tank 200 through the support plates 210. This force transmission structure is reasonable and can effectively prevent the support plates 210 from being damaged.

[0055] For example, Figure 1 and Figure 3 As shown, four support plates 210 are provided in the aeration tank 200, and the four support plates 210 are vertically arranged in pairs along the circumference of the wind cap 20. Preferably, the support plates 210 are welded to the inner peripheral wall of the aeration tank 200, so that the connection strength between the support plates 210 and the inner peripheral wall of the aeration tank 200 can be ensured.

[0056] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 5 The hood 20 includes: a main body 21, a baffle 22 and a reinforcing rib 23. The main body 21 is annular, and the central tube 10 is supported on the upper end of the main body 21 (such as Figure 5 baffle portion 22 is arranged horizontally, and baffle portion 22 is jacketed on the lower end of the main body portion 21 (as shown in Figure 5 The reinforcing ribs 23 are arranged between the outer peripheral wall of the main body 21 and the upper surface of the baffle portion 22 and are connected to the main body 21 and the baffle portion 22. The reinforcing ribs 23 are multiple and spaced apart along the circumferential direction of the main body 21. At least one end of the partial reinforcing ribs 23 that is away from the central axis of the main body 21 exceeds the baffle portion 22 and is supported on the support plate 210. In other words, one end of the partial reinforcing ribs 23 that is away from the central axis of the main body 21 may exceed the baffle portion 22 and be supported on the support plate 210, or one end of the entire reinforcing ribs 23 that is away from the central axis of the main body 21 may exceed the baffle portion 22 and be supported on the support plate 210.

[0057] In this way, the main body 21 provides a supporting position for the central tube 10, which is convenient for supporting the central tube 10. The baffle portion 22 is horizontally arranged, and the baffle portion 22 can block the water flow stirred by the impeller 40, thereby reducing the crystallization of sediment in the sewage in the central tube 10, thereby extending the cleaning cycle of the central tube 10, and the reinforcing ribs 23 can strengthen the strength of the hood 20 to prevent the hood 20 from being damaged by the gravity of the central tube 10. At the same time, at least part of the reinforcing ribs 23 extend beyond the baffle portion 22 and cooperate with the support plate 210, thereby facilitating the connection between the reinforcing ribs 23 and the support plate 210. At the same time, the protruding length of the support plate 210 can also be reduced to save costs.

[0058] For example, Figure 3 and Figure 5 As shown, the main body 21 is a hollow cylinder with a cross-section that gradually increases from bottom to top, and a first supporting edge 211 is formed on the inner wall of the upper end of the main body 21. The baffle portion 22 is a hollow circular ring, and the baffle portion 22 is connected to the lower side of the main body 21. The reinforcing ribs 23 are vertically arranged, and the reinforcing ribs 23 extend radially away from the central axis of the main body 21. The reinforcing ribs 23 are connected to the main body 21, and the lower ends of the reinforcing ribs 23 are connected to the upper surface of the baffle, and the end portions of the reinforcing ribs 23 are supported on the support plate 210.

[0059] According to some optional embodiments of the present invention, referring to Figure 5 and Figure 6 The upper surface of the end of the support plate 210 close to the hood 20 is provided with a lap groove 220, and the end of the reinforcing rib 23 away from the central axis of the main body 21 is inserted into the lap groove 220. Therefore, the lap groove 220 can facilitate the reinforcing rib 23 to extend into and cooperate with the support plate 210, so as to facilitate the connection between the support plate 210 and the hood 20.

[0060] Preferably, the thickness of the support plate 210 is 20mm-30mm, which can ensure the strength of the support plate 210. At the same time, sufficient layout space is left for the lap groove 220 to facilitate the layout of the lap groove 220. The length of the lap groove 220 is 20mm-30mm, and the width of the lap groove 220 is 10mm-15mm. This can ensure the space inside the lap groove 220, thereby facilitating the cooperation between the part of the reinforcing rib 23 that exceeds the baffle portion 22 and the lap groove 220.

[0061] According to the aeration device 1000 of the second embodiment of the utility model, refer to Figure 1 , comprising: an aeration tank 200 and the aerator 100 of the first aspect of this embodiment, wherein the central tube 10 extends into the aeration tank 200 .

[0062] According to the aeration device 1000 of the embodiment of the utility model, by setting the aerator 100 of the first aspect embodiment mentioned above, the central cylinder 10 is set as the first half cylinder 11 and the second half cylinder 12 on the aerator 100, so that the interior of the central cylinder 10 can be easily cleaned in depth, thereby saving cleaning steps and reducing cleaning time. At the same time, the cleaning effect can be guaranteed, the cleaning cycle of the central cylinder 10 can be extended, and the inspection time and maintenance cost can be reduced.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0067] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An aerator, characterized in that: include: A central cylinder, the central cylinder is vertically arranged and comprises a first half cylinder and a second half cylinder, the first half cylinder and the second half cylinder are detachably connected, and the first half cylinder and the second half cylinder form a ring; A hood, the hood being arranged at the lower end of the central tube; an aeration rod, the aeration rod being inserted through the central tube and the hood; An impeller is located at the lower side of the hood and connected to the lower end of the aeration rod.

2. The aerator according to claim 1, characterized in that: The first half cylinder and the second half cylinder have arc shapes in cross sections perpendicular to the axis of the central cylinder; And / or, the central tube is a cylindrical tube; And / or, the first half cylinder and the second half cylinder are symmetrically arranged.

3. The aerator according to claim 1, characterized in that: Along the circumferential direction of the central tube, two ends of the first half tube are provided with first flanges extending outward, and two ends of the second half tube are provided with second flanges extending outward, and the two first flanges at the two ends of the first half tube are respectively detachably connected to the two second flanges at the two ends of the second half tube.

4. The aerator according to claim 1, characterized in that: Also includes: A bracket, the bracket is arranged at the upper end of the central tube and connected to the central tube through a fastener; A driving mechanism is disposed on the bracket and connected to the upper end of the aeration rod, and is used for driving the aeration rod to rotate.

5. The aerator according to claim 1, characterized in that: The aerator is arranged in the aeration tank, the wind cap is fixed in the aeration tank, and the central tube is supported on the upper end of the wind cap and is detachable.

6. The aerator according to claim 5, characterized in that: The inner peripheral wall of the hood is provided with a first supporting edge extending along the circumferential direction of the hood, and the outer peripheral wall of the lower end of the center tube is provided with a second supporting edge extending along the circumferential direction of the center tube, and the second supporting edge is supported on the first supporting edge.

7. The aerator according to claim 5, characterized in that: A plurality of support plates are arranged in the aeration tank and are spaced apart along the circumferential direction of the aeration tank. One end of the support plate is connected to the inner circumferential wall of the aeration tank, and the other end cooperates with the wind hood to support the wind hood.

8. The aerator according to claim 7, characterized in that: The hood comprises: A main body, the main body is annular, and the central tube is supported on the upper end of the main body; A baffle portion, the baffle portion is horizontally arranged and is sleeved on the lower end of the main body portion; Reinforcing ribs are arranged between the outer peripheral wall of the main body and the upper surface of the baffle portion and are connected to the main body and the baffle portion. The reinforcing ribs are multiple and spaced apart along the circumferential direction of the main body, and at least part of the reinforcing ribs have one end away from the central axis of the main body that extends beyond the baffle portion and is supported on the support plate.

9. The aerator according to claim 8, characterized in that: A lap groove is provided on the upper surface of one end of the support plate close to the hood, and one end of the reinforcing rib away from the central axis of the main body is inserted into the lap groove.

10. An aeration device, characterized in that: include: Aeration tank; According to the aerator according to any one of claims 1-9, the central tube extends into the aeration tank.

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