Aeration structure design method, aerator, oxygenation equipment and air flotation separation device

Abstract

The aeration structure design method is used for designing an aeration structure for changing positive pressure gas into bubbles, the aeration structure is provided with micropores (4), a mixing channel (2) is designed, at least three micropores (4) are distributed in the inner surface of the mixing channel (2), the positive pressure gas generates the bubbles in the mixing channel (2) through the micropores (4), and air pressure extrudes the bubbles from the inner surface of the mixing channel (2) to the center of the mixing channel (2). The aerator is used for changing positive pressure gas into bubbles, micropores (4) are formed in the body (1), the body (1) is provided with a mixing channel (2), and at least three micropores (4) are located on the inner surface of the mixing channel (2); and gas is released into the mixing channel (2) through the micropores (4) and bubbles are generated. The aeration equipment or the air flotation separation device is provided with the aerator. The structure is simple, the efficiency of liquid exchange, gas exchange, air flotation adsorption and bubble floating is improved, and a new technical thought is provided.

Description

Technical Field

[0001] The invention belongs to the field of gas-liquid mixing, and specifically relates to an aeration structure design method, an aerator, oxygenation equipment, and an air flotation separation device. Background Art

[0002] The function of the aerator is to convert positive pressure gas into bubbles. It is often used in aeration, oxygenation, flotation separation, gas-liquid reaction and other fields.

[0003] Aerators in the prior art mostly use plate-shaped, columnar or block-shaped structures, releasing gas into the liquid through micropores evenly distributed on the surface or side walls. However, this type of structure has a serious problem. The bubbles drive the liquid upward, and the resulting liquid flow has bubbles located in the middle of the liquid flow, making it difficult for the buoyancy of each bubble to superimpose the upward thrust on the liquid flow. As a result, the closer to the outside of the liquid flow, the smaller the upward buoyancy, and even form a local circulation, affecting the liquid exchange efficiency and the gas-liquid mixing efficiency. There is room for improvement. When the prior aerator is used in oxygenation equipment, the gas exchange efficiency needs to be improved. When the prior aerator is used in a flotation separation device, the smaller the bubble, the better the adsorption. However, the smaller the bubble, the slower the floating speed, which is not conducive to collecting foam and difficult to balance. Improvement is necessary. Summary of the Invention

[0004] In order to solve the above problems, the present invention proposes the following technical solutions.

[0005] An aeration structure design method is used to design an aeration structure for converting positive pressure gas into bubbles, and the aeration structure has micropores (4). The difference from the prior art is that: a mixing channel (2) is designed, and the micropores (4) are distributed on the inner surface of the mixing channel (2). Positive pressure gas passes through the micropores (4) to generate bubbles in the mixing channel (2), and the air pressure squeezes the bubbles from the inner surface of the mixing channel (2) to the center of the mixing channel (2).

[0006] The aerator is used to convert positive pressure gas into bubbles. The main body (1) has micropores (4). The difference from the prior art is that the main body (1) has a mixing channel (2), at least three micropores (4) are located on the inner surface of the mixing channel (2), and the gas is released into the mixing channel (2) through the micropores (4) to generate bubbles.

[0007] Furthermore, when the axis of the mixing channel (2) is vertical, at least three micropores (4) are not on the same vertical line.

[0008] Furthermore, the air pressure squeezes the bubbles from the inner surface of the mixing channel (2) toward the center of the mixing channel (2).

[0009] Furthermore, the height of the mixing channel (2) is greater than its diameter, which facilitates the air pressure to squeeze the bubbles in the radial direction. Because the bubbles are close to a circle before being squeezed, and the height is greater than the diameter, the bubbles are more likely to be squeezed together in the radial direction.

[0010] Furthermore: the micropores (4) are distributed in a regular array.

[0011] Furthermore: the micropores (4) are randomly distributed.

[0012] Furthermore: the number of mixing channels (2) is greater than one.

[0013] Furthermore: the cross section of the mixing channel (2) is partially or entirely circular or polygonal.

[0014] Furthermore, the inner diameter of the micropore (4) is less than 2 mm.

[0015] Furthermore: the cross section of the mixing channel (2) is partially or entirely gear-shaped.

[0016] Further: Made in one piece using 3D printing or assembled from multiple parts.

[0017] Further: used for aerating water, the positive pressure gas is pressurized air.

[0018] Furthermore: the inner diameter of the mixing channel (2) is 6-12 mm, and the positive pressure gas comes from an aquarium air pump.

[0019] Furthermore: the mixing channel (2) is a non-uniform column structure such as a gradient type, a frustum type, a multi-step broken line type, etc.

[0020] Furthermore: the mixing channel (2) is cylindrical.

[0021] Furthermore, some of the micropores (4) are located on the outer surface of the main body (1), which can be used for observing the processing quality, or for other purposes, such as gas emission indication, etc.

[0022] The oxygenation equipment comprises an aerator, and the aerator is the aerator mentioned above.

[0023] The air flotation separation device has an aerator, which is the aerator mentioned above.

[0024] Technical Principle When liquid molecules are pushed by a single bubble, the farther the liquid molecules are from the bubble, the smaller the force they receive. When the bubbles are distributed in a ring shape, the liquid molecules farthest from the bubble are located in the middle of the mixing channel (2). These farthest liquid molecules can be simultaneously subjected to the thrust superposition of all bubbles, which greatly improves the thrust superposition efficiency, improves the flow efficiency of the liquid flow, and improves the liquid exchange efficiency.

[0025] Since the liquid molecules in the middle of the mixing channel (2) are subjected to superimposed thrusts, while the surrounding liquid molecules are directly pushed by the buoyancy of the bubbles, the liquid flow is subjected to more uniform force and is less likely to have local vortices, thereby improving the flow efficiency of the liquid flow and the liquid exchange efficiency.

[0026] Although the air source pressure of traditional technology is greater than the water pressure, when bubbles are generated, the water keeps retreating, resulting in the pressure on the bubble surface being only close to the water pressure. When used as an aerator of a flotation device, the bubbles of the present invention squeeze from the four sides to the middle, and the bubbles are squeezed together in the radial direction under the action of air pressure. The pressure on both sides of the bubble water film is air pressure. Compared with traditional technology, the bubbles of the present invention are squeezed by air pressure, and the pressure on the liquid film is greater, making it easier for pollutants to enter the gas-liquid interface, thereby improving the flotation adsorption efficiency. The liquid film of the present invention is subjected to greater pressure, making it easier for the gas in the bubbles to enter the liquid, thereby improving the gas exchange efficiency. The present invention squeezes some bubbles together to form bubble clusters, and the liquid film between small bubbles becomes thinner, which reduces the overall density, increases buoyancy and accelerates floating. Beneficial effects

[0027] The structure is simple, which improves the efficiency of liquid exchange, gas exchange, flotation adsorption and bubble floating, and provides a new technical idea.

[0028] Explanation: Positive pressure gas refers to a gas with a pressure greater than the hydraulic pressure when aerating a liquid. This is achieved by pumps, fans, and air compressors, which generate bubbles within the liquid by increasing the pressure of the gas to a level greater than the hydraulic pressure. The core of this invention is the use of air pressure to compress the bubbles from the outside inward. Negative pressure gas bubble formation (e.g., Venturi and diamond-shaped gas-liquid mixing tubes) cannot compress bubbles using air pressure greater than the water pressure, and therefore falls outside the scope of this invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of Example 1.

[0030] Figure 2 This is a cross-sectional view of Example 1. DETAILED DESCRIPTION

[0031] Example 1, as Figure 1 and 2 As shown, an aerator is used to convert positive pressure gas into bubbles, comprising a body (1), the body (1) having a mixing channel (2) and an air cavity (3), the air cavity (3) being arranged around the mixing channel (2), the air cavity (3) being connected to the mixing channel (2) through at least 50 micropores (4), and when the axis of the mixing channel (2) is vertical, at least three micropores (4) are not on the same vertical line; the gas is released into the mixing channel (2) through the air cavity (3) and the micropores (4) in sequence to generate bubbles; a large number of bubbles are squeezed together under the pressure of the air pump.

[0032] The height of the mixing channel (2) is greater than its diameter.

[0033] Positive pressure gas comes from the air pump (B).

[0034] Example 2: Oxygenation equipment, comprising an aerator, wherein the aerator is the aerator described in Example 1.

[0035] Example 3: An air flotation separation device having an aerator, which is the aerator described in Example 1.

[0036] Others: Although the present invention is concise, it is ingeniously designed; achieving good beneficial effects with a simple design is a reflection of the ingenuity of the present invention; readers should judge the inventiveness of the present invention from multiple perspectives, including whether the technical problem has been raised, whether the technical solution has appeared, and whether the technical effect has been produced, rather than relying on hindsight and denying the inventiveness of the present invention on the grounds that the present invention is simple; it should be noted that simplicity does not mean easy to think of, and technical inspiration must be closely linked to the content disclosed by prior art and analyzed in combination with the patent law's limitation on the capabilities of the virtual person who is a technician in the relevant field.

Claims

1. A method for designing an aeration structure for converting positive pressure gas into bubbles, having micropores (4), characterized in that: The mixing channel (2) is designed such that at least three micropores (4) are distributed on the inner surface of the mixing channel (2). Positive pressure gas passes through the micropores (4) to generate bubbles in the mixing channel (2), and the gas pressure squeezes the bubbles from the inner surface of the mixing channel (2) toward the center of the mixing channel (2).

2. Aerator, used to convert positive pressure gas into bubbles, with micropores (4) on the body (1), characterized by: The main body (1) has a mixing channel (2), and at least three micropores (4) are located on the inner surface of the mixing channel (2); gas is released into the mixing channel (2) through the micropores (4) and generates bubbles.

3. The aerator according to claim 2, characterized in that: The air pressure squeezes the bubbles from the inner surface of the mixing channel (2) toward the center of the mixing channel (2).

4. The aerator according to claim 2, characterized in that: The height of the mixing channel (2) is greater than its diameter.

5. The aerator according to claim 2, wherein: When the axis of the mixing channel (2) is vertical, at least three micropores (4) are not on the same vertical line.

6. The aerator according to claim 2, characterized in that: Some of the micropores (4) are located on the outer surface of the body (1).

7. The aerator according to claim 2, wherein: The mixing channel (2) is cylindrical.

8. The aerator according to claim 2, wherein: The inner diameter of the micropore (4) is less than 2 mm and is used for aerating the water, and the positive pressure gas is pressurized air; the inner diameter of the mixing channel (2) is 6-12 mm, and the positive pressure gas comes from the aquarium air pump.

9. Oxygenation equipment, with an aerator, characterized by: The aerator is the aerator as claimed in claim 2.

10. Air flotation separation device, with an aerator, characterized by: The aerator is the aerator as claimed in claim 2.

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