Oxygen-enriched bubble expanding device

Abstract

The utility model relates to the technical field of aeration devices, in particular to an oxygen-enriched bubble expansion device. Which comprises a mounting column and is characterized in that a plurality of layers of flow guide plates are fixedly arranged on the mounting column, the flow guide plates on each layer are arranged in the circumferential direction of the mounting column, and the flow guide plates incline or bend outwards from bottom to top. The guide plate comprises a guide part and a fork tail part, one end of the inner side of the guide part is fixedly connected with the mounting column, one end of the outer side of the guide part is fixedly connected with the fork tail part, and a V-shaped notch with an open outer end is formed in one end of the outer side of the fork tail part. By means of the structure, bubbles generated by the bubble generating mechanism can diffuse to the periphery under the flow guiding effect of the flow guiding plate when passing through the flow guiding plate, so that the radiation range of the bubbles is wider, meanwhile, the phenomenon that the bubbles are fused to form large bubbles can be reduced, and the oxygenation efficiency is improved; and through the arrangement of the fork tail part, the bubbles can be further cut when passing through the fork tail part, and the oxygenation efficiency of the device is further improved.

Description

Technical Field

[0001] This utility model relates to the field of aeration device technology, specifically to an oxygen-enriched bubble expansion device. Background Technology

[0002] An aeration device is used to supply oxygen to the aeration tank during the activated sludge process in wastewater treatment. Aeration refers to the artificial introduction of air into the aeration tank through appropriate equipment to achieve the desired purpose. Aeration not only brings oxygen into the tank by contacting the liquid with air, but also accelerates the transfer of oxygen from the air into the liquid by agitating the liquid, thus achieving the purpose of oxygenation. In addition, aeration also prevents suspended solids from settling and enhances the contact between organic matter, microorganisms, and dissolved oxygen in the tank, thereby ensuring that microorganisms in the tank can oxidize and decompose organic matter in the wastewater under conditions of sufficient dissolved oxygen.

[0003] In existing technologies, aeration devices mainly include a ring-shaped air blowing pipe connected to equipment such as a blower. A breathable protective sleeve is fitted over the air blowing pipe. The air blowing pipe is mounted on a weight via mounting components. During use, the air blowing pipe, under the action of the weight, rests at the bottom of the aeration tank. An aeration tank typically has many such aeration devices evenly distributed, and the bottom of the aeration tank is also covered with a network of pipes supplying air to multiple aeration devices. When air is blown out from the air blowing pipe, it forms bubbles after passing through the breathable protective sleeve. These bubbles move directly upwards. The bubbles generated by a single aeration device are relatively concentrated, with a small radiation area. Furthermore, the concentrated distribution of bubbles causes them to combine and form larger bubbles, resulting in low oxygenation efficiency in the aeration tank and necessitating the installation of numerous aeration devices. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an oxygen-enriched bubble expansion device to solve the issues in the prior art where the radiation area of ​​a single aeration device is small, the generated bubbles are relatively concentrated, resulting in low oxygenation efficiency and the need to install more aeration devices.

[0005] This utility model is achieved using the following technical solution: an oxygen-enriched bubble expansion device, comprising a mounting column, characterized in that a plurality of layers of guide plates are fixedly arranged on the mounting column, and the guide plates on each layer are arranged along the circumference of the mounting column, and the guide plates are inclined or bent outward from bottom to top.

[0006] With the above structure, when the bubbles generated by the bubble generating mechanism pass through the guide plate, they will spread outwards due to the guiding effect of the guide plate, thereby making the radiation range of the bubbles wider. At the same time, it can reduce the occurrence of bubbles merging to form large bubbles, improve oxygenation efficiency, and the design of the guide plate can also effectively reduce the rising speed of the bubbles, thereby increasing the residence time of the bubbles in the wastewater and further improving oxygenation efficiency.

[0007] Preferably, the length of the guide plate increases from bottom to top. This increasing length design allows for more uniform diffusion of the bubbles, thereby further improving the oxygenation efficiency of the device.

[0008] Preferably, the guide vane has two layers, with the upper and lower layers alternately distributed along the circumference of the mounting column in a top-view direction. This staggered distribution of the upper and lower layers of guide vanes also ensures more uniform diffusion during the upward flow.

[0009] Preferably, the guide plate includes a guide section and a fork tail section. One inner end of the guide section is fixedly connected to the mounting post, and the other outer end is fixedly connected to the fork tail section. A notch is provided at the outer end of the fork tail section. By setting the fork tail section, the bubbles can be further cut when passing through the fork tail section, reducing the occurrence of bubble aggregation during the guide process and further improving the oxygenation efficiency of the device.

[0010] Preferably, the bottom end of the mounting column is fixedly connected to an installation mechanism for installing the mounting column in the aeration tank.

[0011] Preferably, a support rod is fixedly connected to the bottom of the mounting column, and an openable retaining ring is fixedly connected to the outer end of the support rod. The retaining ring is located below the guide plate. The retaining ring facilitates the installation of the bubble generating mechanism.

[0012] Preferably, the fixing ring includes a lower half ring fixedly connected to the support rod, and an upper half ring is detachably fixedly connected to the lower half ring.

[0013] Preferably, at least three support rods and fixing rings are provided, and the support rods and fixing rings are evenly distributed along the circumferential direction of the mounting column. The arrangement of three fixing rings and support rods makes the installation of the bubble generating mechanism more stable.

[0014] Preferably, the fixing ring is provided with a circular air blowing pipe, one air blowing pipe passes through all the fixing rings at the same time, the air blowing pipe is provided with an air inlet pipe, and the outside of the air blowing pipe is covered with a breathable protective sleeve.

[0015] Preferably, the guide plate is provided with a plurality of dispersion holes. By setting the dispersion holes, the bubbles can be further refined, the contact area between the bubbles and the wastewater to be treated can be increased, and the oxygenation effect can be further enhanced.

[0016] In summary, the beneficial effects of this utility model are as follows:

[0017] 1. With the design of the guide plate, the bubbles diffuse under the guidance of the guide plate during their ascent, which makes the radiation area of ​​the bubbles generated by a single bubble generator larger. In addition, the guide plate also slows down the vertical ascent speed of the bubbles, thereby prolonging the residence time of oxygen in the water and further improving the oxygenation efficiency of a single bubble generator.

[0018] 2. The fork tail at the outer end of the guide plate allows the bubbles to be further separated when passing through the fork tail, reducing the merging between bubbles and increasing the contact area and dissolution efficiency between oxygen and wastewater. In addition, the fork tail increases the complexity of the bubble rising path, which can further slow down the rising speed of the bubbles and improve the oxygenation efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0021] Figure 3 This is a top view of the first embodiment;

[0022] Figure 4 This is a top view of the second embodiment.

[0023] In the diagram: 1-Mounting post; 2-Guide section; 3-Fork tail; 4-Guide plate; 5-Upper half ring; 6-Lower half ring; 7-Limiting groove; 8-Limiting nut; 9-Threaded post; 10-Ventilating protective sleeve; 11-Fixing ring; 12-Blowing pipe; 13-Inlet pipe; 14-Support rod; 15-Dispersion hole. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0025] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings. Example 1:

[0027] like Figure 1 As shown, this utility model provides an oxygen-enriched bubble expansion device, including a cylindrical mounting column 1, with a support mechanism for mounting a bubble generating mechanism connected to the bottom of the mounting column 1. Several guide plates 4 for guiding the bubbles are fixedly installed on the mounting column 1 above the support mechanism, and the guide plates 4 are inclined or bent outward from bottom to top.

[0028] The guide plate 4 includes a guide section 2 and a fork tail section 3. One end of the guide section 2 is fixedly connected to the mounting post 1, and the other end is fixedly connected to the fork tail section 3. The curved plate of the guide section 2 is mainly used to guide the bubbles, while the outer end of the fork tail section 3 has a notch. Specifically, the shape of the notch can be any shape that can separate the bubbles, such as a "W" shape. In this embodiment, the shape of the notch is a "V" shaped notch with an open outer end, similar to the shape of a fish's tail fin, mainly used to disperse and cut the bubbles.

[0029] The guide plate 4 can be one layer or multiple layers. In order to further diffuse the bubbles, the guide plate 4 is provided with multiple layers, and the length of each layer of guide plate 4 increases from bottom to top. The guide plates 4 on each layer are evenly arranged along the circumference of the mounting column 4.

[0030] By designing the upper guide plate 4 to be longer than the lower guide plate 4, the bubbles can diffuse further, resulting in a wider radiation area and more dispersed bubbles. This increases the contact area between wastewater and oxygen, improving oxygen supply efficiency. Furthermore, the multi-layered guide plates 4 reduce the vertical rise speed of the bubbles, prolonging their residence time in the wastewater. Given the same bubble generation speed, the longer the bubbles remain in the wastewater, the higher the oxygen content, further enhancing the oxygenation efficiency of the device.

[0031] like Figure 1 , Figure 3 As shown, the guide vane 4 has two layers, with the upper and lower layers of guide vanes 4 alternating in the top view. Because when bubbles pass through the guide vane 4, they not only move outwards along the guide vane 4 but also rise upwards from the edge of the guide vane 4. That is, a relatively large number of bubbles rise from the area between the two bottom guide vanes 4. Therefore, the upper and lower layers of guide vanes 4 are spaced apart, allowing the bubbles rising from between the two bottom guide vanes 4 to be further expanded, resulting in a better expansion effect and a more uniform distribution of bubbles.

[0032] To facilitate installation, a mounting mechanism for installing the mounting column 1 inside the aeration tank is fixedly connected to the bottom of the mounting column. Specifically, the mounting mechanism includes a threaded column 9 whose top end is fixedly connected to the bottom end of the mounting column 1. The threaded column 9 has external threads, allowing a threaded cylinder with internal threads to be installed at the bottom of the aeration tank. The threaded column 9 is then fixedly installed at the bottom of the mounting column 1, and a limit nut 8 is installed on the threaded column 9 through threaded engagement. During installation, simply install the threaded column 9 into the threaded cylinder at the bottom of the aeration tank through threaded engagement, and then tighten the limit nut 8 for further fixation.

[0033] The threaded post 9 and the mounting post 1 are integrally formed.

[0034] like Figure 1 , Figure 2 As shown, the support mechanism includes a support rod 14 fixedly installed at the bottom of the mounting column 1, and a fixing ring 11 that can be opened is fixedly installed at the outer end of the support rod 14. The fixing ring 11 is located below the guide plate 4.

[0035] The fixing ring 11 includes a lower half-ring 6 fixedly connected to the support rod 16, and an upper half-ring 5 is detachably fixedly connected to the lower half-ring 6. The connection between the upper half-ring 5 and the lower half-ring 6 can be achieved in various ways, such as a snap-fit ​​or a slotted engagement. In this embodiment, the connection between the upper half-ring 5 and the lower half-ring 6 is primarily achieved by providing limiting grooves 7 at both ends of the upper half-ring 5, with through holes at the bottom of the limiting grooves 7, and threaded holes at both ends of the lower half-ring 6. When the two end faces of the upper half-ring 5 and the lower half-ring 6 are mated, they can be fixed by two bolts. Specifically, the bottom of the bolts passes through the through holes to reach the threaded holes of the lower half-ring 6 and engages with them for fixing.

[0036] As a further illustration of this example, in order to make the bubble generating mechanism more stable, at least three support rods 14 and fixing rings 11 are provided, and these support rods 14 and fixing rings 11 are evenly distributed along the circumferential direction of the mounting column 1.

[0037] The bubble generating mechanism in this device includes an air blowing pipe 12 mounted on a fixed ring 11. The air blowing pipe 12 has an air inlet pipe 13 and is annular in shape. After installation, one air blowing pipe 12 passes through all the fixed rings 11 simultaneously; that is, all the fixed rings 11 support one air blowing pipe 12. Several air holes are arranged on the air blowing pipe 12. A breathable protective sleeve 10 is fitted over the outside of the air blowing pipe 12, covering the portion of the air blowing pipe 12 excluding the air inlet pipe 13. When air is blown into the air blowing pipe 12, the air passes through the breathable protective sleeve 10 and enters the wastewater, forming a large number of bubbles.

[0038] The operating principle of this embodiment is as follows: First, the device is fixedly installed at the bottom of the aeration tank by the threaded post 9 at the bottom. Then, the air blowing pipe 12 is installed on the support mechanism. Subsequently, air is introduced into it by equipment such as a blower. After the air passes through the breathable protective sleeve 10, a large number of bubbles are formed. During the rising process, the bubbles will pass through the guide plate 4, which will cause the bubbles to be diffused and separated, making the bubbles more dispersed and the radiation range wider. Example 2:

[0039] like Figure 4 As shown, the structure of this embodiment is basically the same as that in Embodiment 1. The difference between this embodiment and Embodiment 1 is that, in this embodiment, the guide plate 4 is provided with a plurality of dispersion holes 15. By setting the dispersion holes 15, the bubbles can be further refined. Under the same volume, the smaller the bubble, the larger the contact area. Therefore, by setting the dispersion holes 15, the contact area between the bubbles and the sewage is increased, thereby improving the sewage treatment effect.

[0040] In summary, this utility model's oxygen-enriched bubble expansion device, through the arrangement of the guide plate 4, allows bubbles to diffuse under the guidance of the guide plate 4 during their ascent, thus increasing the radiation area of ​​the bubbles generated by a single bubble generator. Furthermore, the guide plate 4 slows down the vertical ascent speed of the bubbles, extending the residence time of oxygen in the water and further improving the oxygenation efficiency of a single bubble generator. The forked tail 3 at the outer end of the guide plate 4 further segments the bubbles as they pass through, reducing bubble merging and increasing the contact area and dissolution efficiency between oxygen and wastewater. Additionally, the forked tail 3 increases the complexity of the bubble's ascent path, further slowing down the ascent speed and improving oxygenation efficiency. Due to the increased oxygenation efficiency of a single device, fewer bubble generators can be installed to meet the same requirements, resulting in a smaller area occupied by the bubble generators in the aeration tank and reducing the difficulty of aeration tank piping layout.

[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An oxygen-enriched bubble expansion device, comprising a mounting column (1), characterized in that, Several layers of guide plates (4) are fixedly installed on the mounting column (1). The guide plates (4) on each layer are arranged along the circumference of the mounting column (1), and the guide plates (4) are inclined or bent from bottom to top.

2. The oxygen-enriched bubble expansion device according to claim 1, characterized in that, The length of the guide plate (4) increases from bottom to top.

3. The oxygen-enriched bubble expansion device according to claim 2, characterized in that, The guide plate (4) has two layers, and the upper and lower layers of guide plates (4) are alternately distributed along the circumference of the mounting column (1) in the top view direction.

4. The oxygen-enriched bubble expansion device according to claim 3, characterized in that, The guide plate (4) includes a guide section (2) and a fork tail section (3). The inner end of the guide section (2) is fixedly connected to the mounting post (1), and the outer end is fixedly connected to the fork tail section (3). The outer end of the fork tail section (3) is provided with a notch.

5. The oxygen-enriched bubble expansion device according to claim 1, characterized in that, The bottom end of the mounting column (1) is fixedly connected to an installation mechanism for installing the mounting column (1) in the aeration tank.

6. The oxygen-enriched bubble expansion device according to claim 1, characterized in that, The bottom of the mounting column (1) is fixedly connected to a support rod (14), and the outer end of the support rod (14) is fixedly connected to a fixing ring (11) that can be opened. The fixing ring (11) is located below the guide plate (4).

7. The oxygen-enriched bubble expansion device according to claim 6, characterized in that, The fixing ring (11) includes a lower half ring (6) fixedly connected to the support rod (14), and an upper half ring (5) is detachably fixedly connected to the lower half ring (6).

8. The oxygen-enriched bubble expansion device according to claim 6, characterized in that, At least three support rods (14) and fixing rings (11) are provided, and the support rods (14) and fixing rings (11) are evenly distributed along the circumferential direction of the mounting column (1).

9. The oxygen-enriched bubble expansion device according to claim 8, characterized in that, The fixed ring (11) is provided with a circular air blowing pipe (12), and one air blowing pipe (12) passes through all the fixed rings (11) at the same time. The air blowing pipe (12) is provided with an air inlet pipe (13), and a breathable protective sleeve (10) is provided on the outside of the air blowing pipe (12).

10. The oxygen-enriched bubble expansion device according to claim 1, characterized in that, The guide plate (4) is provided with several dispersion holes (15).

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