Novel gas-liquid mixing device

Abstract

The utility model discloses a novel gas-liquid mixing device which comprises an outer sleeve, and an upstream inner sleeve installed in the middle and a downstream inner sleeve installed on one side of the upstream inner sleeve in an attached mode are arranged in a cavity of the outer sleeve. An opening in the left end of the outer sleeve is a first material main inlet; the upstream inner sleeve is made of a porous material, an opening in the left end of the upstream inner sleeve is a first auxiliary material inlet, the first auxiliary material inlet is a triangular end with a gradually reduced pipe diameter, and an opening in the right end of the upstream inner sleeve is a forced mixing chamber; an opening in the left end of the downstream inner sleeve is communicated with the forced mixing chamber, an opening in the right end of the downstream inner sleeve is a mixing diffusion outlet, and the pipe diameter of the mixing diffusion outlet is gradually expanded. According to the device, the gas dissolving efficiency can be effectively improved while the energy consumption is reduced by adopting the design of a porous material, optimizing the outlet design and only utilizing the pump as a power source without other equipment such as mechanical stirring and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of nano bubble generation and mixing, in particular to a novel gas-liquid mixing device. Background Art

[0002] Gas-liquid mixing technology is a key technology widely used in chemical engineering, environmental engineering, bioengineering and other fields. It mainly involves effectively dissolving gas in liquid to improve reaction efficiency, improve liquid properties or enhance environmental quality. Gas-liquid mixing technology plays a vital role in industries such as water treatment, food and beverage production, pharmaceutical manufacturing and mineral processing. Especially in situations where a large amount of gas is required to participate in the reaction or treatment process, such as aeration and oxygenation, carbon dioxide dissolution, gas fermentation, etc., the application effect of gas-liquid mixing technology is directly related to the efficiency and cost of the entire project.

[0003] Although gas-liquid mixing technology has been widely used, traditional gas-liquid mixing equipment and methods still have many limitations. On the one hand, most existing technologies rely on mechanical means such as mechanical stirring or high-pressure pumps to achieve gas dissolution, which not only leads to high energy consumption and increased operating costs, but also often requires complex equipment maintenance and operation. On the other hand, traditional methods often have limited effects in improving gas dissolution rates, especially in applications where large amounts of gas need to be dissolved quickly. Existing technologies are difficult to meet the dual requirements of high efficiency and low energy consumption.

[0004] The current gas-liquid mixing technology, especially in the treatment of dissolved gas in liquid, is widely used in daily food and beverage industry, cleaning industry, bathing industry, aquaculture industry, sewage treatment and mineral processing in chemical industry, etc. Existing gas-liquid mixing equipment, such as a gas-liquid mixing module for rapid gas dissolution disclosed in CN217662641U, although it improves the gas dissolution efficiency to a certain extent, has the problems of high outlet obstruction and high energy consumption. In addition, the structure of the equipment is only an improvement on the traditional aeration disk, lacking innovation and efficiency. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides a novel gas-liquid mixing device, which uses porous materials to be arranged near or at the inlet of the device, which helps to form finer bubbles when the gas is released, thereby increasing the dissolution rate of the gas in the liquid, and also adopts an outlet design with an opening to reduce the fluid resistance at the outlet, and only uses a pump as a power source to reduce energy consumption and improve gas dissolution efficiency. The technical problem of high energy consumption of the gas-liquid mixing device in the prior art is solved.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel gas-liquid mixing device, comprising an outer sleeve, wherein the cavity of the outer sleeve is provided with an upstream inner sleeve installed in a central position and a downstream inner sleeve installed on one side of the upstream inner sleeve;

[0009] The left end opening of the outer sleeve is the main inlet for the first material; the upstream inner sleeve is made of porous material, and the left end opening is the secondary inlet for the first material, which is a triangular end with a gradually narrowing pipe diameter, and the right end opening is a forced mixing chamber; the left end opening of the downstream inner sleeve is connected to the forced mixing chamber, and the right end opening is a mixed diffusion outlet, which is a gradually expanding pipe diameter.

[0010] Furthermore, it also includes an inclined narrow tube penetrating the wall of the outer sleeve, the upper port of the inclined narrow tube is the second material inlet, and the lower port thereof is connected to the forced mixing chamber through the upstream inner sleeve made of porous material.

[0011] Furthermore, the inclination angle of the inclined narrow tube is 10 to 45°.

[0012] Furthermore, a vortex annular gap is provided in the upstream inner sleeve at one side of the triangular end head, and the vortex annular gap is partially connected to the forced mixing chamber.

[0013] Furthermore, the outer sleeve, the upstream inner sleeve and the downstream inner sleeve are detachably connected.

[0014] Furthermore, a diffusion angle is formed between the outlet of the mixed diffusion outlet and the horizontal direction.

[0015] Furthermore, the diffusion angle is 3 to 10°.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a new gas-liquid mixing device and method, which has the following beneficial effects:

[0018] 1. The device uses porous materials to be set near or at the entrance of the device. This setting helps to form smaller bubbles when the gas is released. This design is based on a deep understanding of the bubble formation and rupture mechanism during the gas-liquid mixing process. The setting of porous materials not only helps to form more tiny bubbles when the gas is released, increasing the surface area of ​​the gas, thereby increasing the contact area between the gas and the liquid, but also the formation of tiny bubbles can effectively reduce the surface tension of the liquid, further promote the dissolution of the gas, thereby increasing the dissolution rate of the gas in the liquid, and can directionally regulate the size of the nanobubbles.

[0019] 2. The device uses a specially designed forced mixing chamber for gas and liquid. The flow rate in the mixing chamber is adjusted by controlling the pump, so that the gas and liquid can fully contact and mix in the mixing chamber. In addition, a specific stirring or vibration device can be set in the mixing chamber as needed to further improve the efficiency and uniformity of gas-liquid mixing. The device adopts an outlet design with an opening to reduce the fluid resistance at the outlet and reduce the overall energy consumption.

[0020] In summary, the device adopts a porous material design, optimizes the outlet design, and uses only a pump as a power source, without the need for other equipment such as mechanical stirring. It can reduce energy consumption and effectively improve the dissolved gas efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a novel gas-liquid mixing device embodiment 1 of the utility model;

[0022] Figure 2 This is a structural schematic diagram of a novel gas-liquid mixing device embodiment 2 of the utility model;

[0023] Figure 3 The test results of Example 1 of the present utility model are a curve showing that the average particle size is about 33 nanometers;

[0024] Figure 4 The test results of Example 2 of the present utility model are a curve showing that the average particle size is about 22 nanometers;

[0025] In the figure: 1. Outer sleeve; 101. Main inlet for first material; 2. Upstream inner sleeve; 201. Secondary inlet for first material; 202. Triangular end; 203. Forced mixing chamber; 3. Downstream inner sleeve; 301. Mixing diffusion outlet; 302. Diffusion angle; 4. Inclined narrow tube; 401. Second material inlet; 402. Inclined angle; 5. Vortex annulus. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1:

[0028] See also Figure 1The present embodiment adopts a novel gas-liquid mixing device, comprising an outer sleeve 1, characterized in that: an upstream inner sleeve 2 installed in a central position and a downstream inner sleeve 3 installed on one side of the upstream inner sleeve 2 are arranged in the cavity of the outer sleeve 1; the left end opening of the outer sleeve 1 is a first material main inlet 101; the upstream inner sleeve 2 is made of a porous material, the left end opening of which is a first material secondary inlet 201, the first material secondary inlet 201 is a triangular end head 202 with a gradually narrowing pipe diameter, and the right end opening is a forced mixing chamber 203, a vortex annulus 5 is arranged on one side of the triangular end head 202 in the upstream inner sleeve 2, and the vortex annulus 5 is partially connected to the forced mixing chamber 203; the left end opening of the downstream inner sleeve 3 is connected to the forced mixing chamber 203, and the right end opening is a mixing diffusion outlet 301, and the mixing diffusion outlet 301 is a gradually expanding pipe diameter.

[0029] In the above embodiments, the outer sleeve 1, the upstream inner sleeve 2 and the downstream inner sleeve 3 are detachably connected, and a diffusion angle 302 is formed between the outlet of the mixed diffusion outlet 301 and the horizontal direction, and the diffusion angle 302 is 3-10°.

[0030] This embodiment uses ZetaView nanoparticle tracking analyzer NTA test, such as Figure 3 As shown, the test results show that the average particle size is about 33 nanometers. Figure 3 The horizontal axis represents the diameter of the nanobubbles (in nm), and the vertical axis represents the number of nanobubbles per milliliter.

[0031] Embodiment 2:

[0032] See also Figure 2 The difference between Example 2 and Example 1 is that an inclined narrow tube 4 is provided through the tube wall of the outer sleeve 1, the upper end of the inclined narrow tube 4 is the second material inlet 401, and the lower end thereof is connected to the forced mixing chamber 203 through the upstream inner sleeve 2 made of porous material. The inclination angle 402 of the inclined narrow tube 4 is 10 to 45 degrees.

[0033] This embodiment uses ZetaView nanoparticle tracking analyzer NTA test, such as Figure 4 As shown, the test results show that the average particle size is about 22 nanometers. Figure 4 The horizontal axis represents the diameter of the nanobubbles (in nm), and the vertical axis represents the number of nanobubbles per milliliter.

[0034] The working principle of the novel gas-liquid mixing method includes the following steps:

[0035] S1, the gas and liquid to be mixed enter through the first material main inlet 101 of the outer sleeve 1 using the power provided by the pump. After entering, part of the gas and liquid are quickly cut into tiny bubbles and small liquid droplets by the upstream inner sleeve 2 made of porous material and penetrate into the forced mixing chamber 203; the other part flows into the forced mixing chamber 203 along the triangular end 202 with a tapered pipe diameter through the first material secondary inlet 201. Due to the tapered pipe diameter, the flow velocity gradually accelerates, and the flow velocity at the outlet of the vortex annulus 5 reaches the maximum value, so that a part of the cut gas and liquid is dissolved and mixed with another part of the high-flow gas and liquid more quickly to form a high-concentration gas-liquid mixture.

[0036] S2, in step S1, the gas can also be passed through the inclined narrow tube 4 into the upstream inner sleeve 2 made of porous material, and after being divided by the porous material, enter the forced mixing chamber 203 through the vortex annulus 5, further accelerating the speed and concentration of gas mixing. This step is only used when using the solution of Example 2.

[0037] S3, the mixed gas-liquid mixture is discharged through the mixed diffusion outlet 301. Since the downstream inner sleeve 3 is of a gradually expanding pipe diameter, the flow rate of the mixed material gradually slows down and is discharged smoothly.

[0038] In summary, the device adopts porous material design, optimizes outlet design and uses only pump as power source, without mechanical stirring and other equipment, which can reduce energy consumption and effectively improve gas dissolution efficiency. The specific description is as follows:

[0039] 1. The device uses porous materials to be set near or at the entrance of the device. This setting helps to form smaller bubbles when the gas is released. This design is based on a deep understanding of the bubble formation and rupture mechanism during the gas-liquid mixing process. The setting of porous materials not only helps to form more tiny bubbles when the gas is released, increasing the surface area of ​​the gas, thereby increasing the contact area between the gas and the liquid, but also the formation of tiny bubbles can effectively reduce the surface tension of the liquid, further promote the dissolution of the gas, thereby increasing the dissolution rate of the gas in the liquid, and can directionally regulate the size of the nanobubbles.

[0040] 2. The device uses a specially designed forced mixing chamber for gas and liquid. The flow rate in the mixing chamber is adjusted by controlling the pump, so that the gas and liquid can fully contact and mix in the mixing chamber. In addition, a specific stirring or vibration device can be set in the mixing chamber as needed to further improve the efficiency and uniformity of gas-liquid mixing. The device adopts an outlet design with an opening to reduce the fluid resistance at the outlet and reduce the overall energy consumption.

[0041] It should be noted that if in this article, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, it does not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A novel gas-liquid mixing device, comprising an outer sleeve (1), characterized in that: An upstream inner sleeve (2) installed in a central position and a downstream inner sleeve (3) installed in close contact with one side of the upstream inner sleeve (2) are arranged in the cavity of the outer sleeve (1); The left end opening of the outer sleeve (1) is the first material main inlet (101); the upstream inner sleeve (2) is made of porous material, and the left end opening is the first material secondary inlet (201), the first material secondary inlet (201) is a triangular end (202) with a gradually narrowing pipe diameter, and the right end opening is a forced mixing chamber (203); the left end opening of the downstream inner sleeve (3) is connected to the forced mixing chamber (203), and the right end opening is a mixing diffusion outlet (301), and the mixing diffusion outlet (301) is a gradually expanding pipe diameter.

2. A novel gas-liquid mixing device according to claim 1, characterized in that: It also includes an inclined narrow tube (4) penetrating the tube wall of the outer sleeve (1), the upper port of the inclined narrow tube (4) being the second material inlet (401), and the lower port thereof being connected to the forced mixing chamber (203) through the upstream inner sleeve (2) made of a porous material.

3. A novel gas-liquid mixing device according to claim 2, characterized in that: The inclination angle (402) of the inclined narrow tube (4) is 10 to 45 degrees.

4. A novel gas-liquid mixing device according to claim 1, characterized in that: A vortex annular gap (5) is provided in the upstream inner sleeve (2) on one side of the triangular end head (202), and a portion of the vortex annular gap (5) is connected to the forced mixing chamber (203).

5. A novel gas-liquid mixing device according to claim 1, characterized in that: The outer sleeve (1), the upstream inner sleeve (2) and the downstream inner sleeve (3) are detachably connected.

6. A novel gas-liquid mixing device according to claim 1, characterized in that: A diffusion angle (302) is formed between the outlet of the mixing and diffusion outlet (301) and the horizontal direction.

7. A novel gas-liquid mixing device according to claim 6, characterized in that: The diffusion angle (302) is 3 to 10 degrees.

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