Microbubble generating device and microbubble generating method

Abstract

The present invention provides a microbubble generating device and a microbubble generating method. The microbubble generating device includes a housing with openings at both ends, and at least one shearing assembly is disposed within the housing. The shearing assembly includes a first internal component, a second internal component, and a third internal component, wherein a shearing chamber is formed between the first internal component, the second internal component, and the third internal component. The microbubble generating device provided by the present invention can produce microbubbles with uniform micron and nanometer sizes according to practical production needs, and the microbubbles can exist stably in a liquid phase and are not prone to coalescence. The microbubble generating device also has the advantages of a simple structure, easy disassembly, good sealing, low leakage risk, low energy consumption, low equipment cost, and a small size.

Description

Technical Field

[0001] The present invention belongs to the technical field of multiphase mixing and relates to a microbubble generating device, and in particular to a microbubble generating device and a microbubble generating method. Background Art

[0002] In a multiphase reaction system, since the solubility of the gas phase in the liquid phase is almost very small, the mass transfer process is controlled by the liquid film, and the reaction process becomes a reaction system controlled by the mass transfer rate. Process intensification technology uses the principle of high-energy gas and liquid vortex energy conversion to shear the gas phase into micron- or nano-scale microbubbles, which increases the contact area between the phases by an order of magnitude, and the mass transfer and heat transfer efficiency are greatly improved.

[0003] Microbubbles can generally be produced through Venturi injection, pressure and pressure reduction, jet aeration, fine-pore filtration, ultrasound, and rotary cutting. However, in practical applications, these methods all have drawbacks that make them unsuitable for hazardous chemical applications. The resulting microbubbles are large and uneven in size, exhibit poor stability in the liquid phase, and are prone to coalescence. The devices used in these methods are also prone to clogging, difficulty achieving airtightness, the risk of leakage, high energy consumption, high equipment cost, and bulk.

[0004] CN112642310A discloses a microbubble generating device, a microbubble generating control method and a device. Liquid material passes through a contraction section and enters a gas distribution porous tube on an air inlet section, where gas and liquid are mixed before entering an expansion section and a gas-liquid expansion section. The microbubble generating device utilizes a venturi tube and micropore distribution principles to form microbubbles with high discreteness and effectively shear-break the bubbles with fluid. Larger bubbles break under the pressure recovery effect within the microbubble generating device, forming microbubbles. However, the microbubble generating device has a complex structure, high manufacturing cost, and is difficult to achieve airtightness, posing a risk of leakage.

[0005] CN110898698B discloses a microbubble generator and a gas-liquid reactor containing the same. The microbubble generator includes a gas spraying component and a liquid spraying component. The gas spraying component includes an air inlet pipe and a gas nozzle disposed thereon. The liquid spraying component includes a liquid inlet pipe and a liquid nozzle disposed thereon. The gas nozzle and liquid nozzle are arranged facing each other and form a pair. However, the microbubbles produced by this microbubble generator are relatively large and uneven in size, and are difficult to maintain stability in the liquid phase.

[0006] Currently available microbubble generating devices all have certain drawbacks, including large and uneven microbubble size, poor stability in the liquid phase, and easy coalescence of microbubbles. They also suffer from clogging, difficulty achieving airtightness, leakage risks, high energy consumption, high equipment costs, and bulk. Therefore, the development and design of a new microbubble generating device and method is crucial. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the object of the present invention is to provide a microbubble generating device and a microbubble generating method. The microbubble generating device provided by the present invention can obtain microbubbles with uniform sizes in the micrometer and nanometer levels according to practical needs, and the microbubbles can exist stably in the liquid phase and are not easily aggregated. The microbubble generating device also has the advantages of simple structure, easy disassembly, good sealing, low leakage risk, low energy consumption, low equipment cost and small size.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] In a first aspect, the present invention provides a microbubble generating device, comprising a housing with openings at both ends, wherein at least one shearing assembly is disposed within the housing along a direction from an inlet of the housing to an outlet of the housing; wherein the shearing assembly comprises a first internal member, a second internal member, and a third internal member along a direction from the inlet of the housing to the outlet of the housing;

[0010] The first inner member includes a first structural plate, the first structural plate is provided with at least one first through hole, and the surface of the first structural plate facing the second inner member is provided with at least one first groove;

[0011] The third inner member comprises a third structural plate, the third structural plate is provided with at least one third through hole, and the surface of the third structural plate facing the second inner member is provided with at least one second groove;

[0012] The second inner member includes a second structural plate, at least one second through hole is provided on the second structural plate, and the same number of first protrusions as the first grooves are provided on the surface of the second structural plate facing the first inner member, each of the first protrusions is independently inserted into each of the first grooves, the first structural plate and the second structural plate are in contact only at the surface edges, and a channel structure is formed between the first structural plate and the second structural plate; the same number of second protrusions as the second grooves are provided on the surface of the second structural plate facing the third inner member, each of the second protrusions is independently inserted into each of the second grooves, the third structural plate and the second structural plate are in contact only at the surface edges, and a channel structure is formed between the third structural plate and the second structural plate.

[0013] In the present invention, a shear chamber is formed between the first internal component, the second internal component and the third internal component in the shear assembly. One function of the shear chamber is to generate a high-speed liquid flow by changing the diameter. The bubbles carried by the liquid flow are pulled, cut and broken into smaller bubbles in the shear chamber while constantly changing the flow direction in the shear chamber. The high-speed circular oscillation further pulls and breaks the bubbles. Another function of the shear chamber is to suddenly decelerate the liquid phase carrying the bubbles in the shear chamber by suddenly changing the inner diameter. The bubbles carried by the liquid phase have an inertia difference with the liquid phase. Under the action of the inertia difference, the bubbles carried by the liquid phase and the liquid phase produce relative motion, further impacting and breaking the bubbles, while providing a dispersion space for the bubbles. Under the action of inertia, the microbubbles form a stable gas-liquid film with the liquid phase in the shear chamber, making it difficult for the bubbles that have been formed to coalesce.

[0014] In the present invention, the sizes of the first through hole, the second through hole and the third through hole can be adjusted according to actual production needs, or the channel structure between the first internal component and the second internal component in the shearing assembly, and the channel structure between the third structural plate and the second structural plate can be adjusted to form shear cavities with different structures, thereby generating microbubbles with different sizes.

[0015] The materials of the various structural components of the microbubble generating device provided by the present invention independently include common metal materials, polymer materials and inorganic materials, but are not limited to the materials mentioned above. Other materials that can be used to produce microbubble generating devices that are not listed can be applied, and the production cost of the microbubble generating device is low; the metal material includes any one or a combination of at least two of stainless steel, carbon steel, copper, aluminum and zinc, and typical but non-limiting combinations include a combination of stainless steel and carbon steel, a combination of copper and aluminum, a combination of aluminum and zinc, or a combination of copper, aluminum and zinc; the polymer material includes any one or a combination of at least two of PP, PE, EPDM, NBR, POE and TPU, and typical but non-limiting combinations include a combination of PP and PE, a combination of EPDM and NBR, a combination of POE and TPU, or a combination of PE, EPDM and NBR; the inorganic material includes ceramic and / or glass.

[0016] The microbubble generating device provided by the present invention can obtain microbubbles with uniform micron and nanometer sizes according to production practice needs, and the microbubbles can exist stably in the liquid phase and are not easily aggregated. The microbubble generating device also has the advantages of simple structure, easy disassembly, good sealing, low leakage risk, low energy consumption, low equipment cost and small size.

[0017] As a preferred technical solution of the present invention, the inner side wall of the shell is in contact with the side edges of the first structural plate, the second structural plate and the third structural plate.

[0018] In the present invention, after the inner side wall of the shell is attached to the side edges of the first structural plate, the second structural plate and the third structural plate, the sealing performance of the microbubble generating device is greatly enhanced and the risk of leakage is reduced.

[0019] Preferably, the cross-sectional shape of the inner side wall of the shell includes any one of a circle, an ellipse or a polygon.

[0020] As a preferred technical solution of the present invention, a third protrusion is provided at the edge of the surface of the first structural plate facing the second structural plate, and the third protrusion is in contact with the surface of the second structural plate.

[0021] Preferably, the cross-section of the inner side wall of the shell is circular, the third protrusion is a first stepped annular protrusion that gradually increases toward the edge of the first structural plate, and the outermost step of the first stepped annular protrusion contacts the second structural plate.

[0022] Preferably, a fourth protrusion is provided at an edge of a surface of the third structural plate facing the second structural plate, and the fourth protrusion is in contact with the surface of the second structural plate.

[0023] Preferably, the cross-section of the inner side wall of the shell is circular, the fourth protrusion is a second stepped annular protrusion that gradually increases toward the edge of the third structural plate, and the outermost step of the second stepped annular protrusion contacts the second structural plate.

[0024] As a preferred technical solution of the present invention, the cross-sectional shape of the first through hole includes any one of a circle, an ellipse, a heart, a star, or a polygon.

[0025] Preferably, the cross-sectional shape of the first through hole is a circle with an inner diameter of 0.1 mm to 1 cm, for example, it can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 1 cm, but is not limited to the listed values, and other unlisted values ​​within this numerical range are also applicable.

[0026] Preferably, the shape of the first groove includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere.

[0027] Preferably, the cross-sectional shape of the second through hole includes any one of a circle, an ellipse, a heart, a star, or a polygon.

[0028] Preferably, the cross-sectional shape of the second through hole is a circle with an inner diameter of 0.1 mm to 1 cm, for example, it can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 1 cm, but is not limited to the listed values, and other unlisted values ​​within this numerical range are also applicable.

[0029] Preferably, the shape of the first protrusion includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere.

[0030] Preferably, the shape of the second protrusion includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere, or a combination of at least two of them.

[0031] Preferably, the cross-sectional shape of the third through hole includes any one of a circle, an ellipse, a heart, a star, or a polygon.

[0032] Preferably, the cross-sectional shape of the third through hole is a circle with an inner diameter of 0.1mm to 1cm, for example, it can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 1cm, but is not limited to the listed values, and other unlisted values ​​within this numerical range are also applicable.

[0033] Preferably, the shape of the second groove includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere.

[0034] As a preferred technical solution of the present invention, the shearing assembly divides the interior of the shell into at least two dispersion chambers.

[0035] One function of the dispersion chamber in the present invention is to generate a local low-pressure area by changing the diameter, thereby reducing the solubility of the gas phase in the liquid phase, causing a portion of the gas already dissolved in the liquid phase to precipitate under a low-pressure environment, thereby forming microbubbles; another function of the dispersion chamber is to suddenly decelerate the liquid phase carrying the bubbles in this space by suddenly changing the inner diameter. The bubbles carried by the liquid phase have an inertia difference with the liquid phase. Under the action of the inertia difference, the bubbles carried by the liquid phase and the liquid phase produce relative motion, further impacting and breaking the bubbles, while providing a dispersion space for the bubbles and, under the action of inertia, allowing the microbubbles to form a stable gas-liquid film with the liquid phase in the dispersion chamber, making it difficult for the already formed bubbles to coalesce.

[0036] Preferably, at least one dispersion net is further provided in the housing, and the dispersion net is provided in the dispersion cavity.

[0037] The function of the dispersion network in the present invention is to perform preliminary dispersion of the gas phase and the liquid phase and filter impurities, thereby providing protection for the shearing cavity in the shearing assembly.

[0038] Preferably, the pore size of the dispersion net is 2.5 mesh to 12500 mesh, for example, it can be 2.5 mesh, 3 mesh, 5 mesh, 7 mesh, 10 mesh, 15 mesh, 20 mesh, 25 mesh, 30 mesh, 50 mesh, 70 mesh, 100 mesh, 200 mesh, 300 mesh, 500 mesh, 700 mesh, 1000 mesh, 1500 mesh, 2000 mesh, 3000 mesh, 4000 mesh, 5000 mesh, 6000 mesh, 7000 mesh, 8000 mesh, 9000 mesh, 10000 mesh, 11000 mesh, 12000 mesh or 12500 mesh, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0039] As a preferred technical solution of the present invention, a fourth internal component is further provided in the dispersion chamber. The fourth internal component is in the shape of a ring, and the outer wall of the ring fits with the inner wall of the shell at the corresponding position of the dispersion chamber.

[0040] In the present invention, the fourth internal component is provided in the shell, which is conducive to improving the detachability of the microbubble generating device.

[0041] Preferably, the cross-sectional shape of the inner side wall of the ring body includes any one of a circle, an ellipse or a polygon.

[0042] Preferably, a threaded area is provided on the inner side wall of the shell at a position corresponding to the dispersion chamber, so as to tighten the internal component and enhance the sealing.

[0043] Preferably, the length of the threaded area is greater than the width of the fourth inner member.

[0044] Preferably, a material inlet is provided at the inlet of the shell.

[0045] Preferably, a material outlet is provided at the outlet of the shell.

[0046] In a second aspect, the present invention provides a method for generating microbubbles using the microbubble generating device according to the first aspect, the method comprising:

[0047] The mixture of gaseous material and liquid material enters the shell from the inlet of the shell, passes through the shearing component, and is discharged from the outlet of the shell to obtain the final material with microbubbles.

[0048] As a preferred technical solution of the present invention, the method for preparing the mixed material includes:

[0049] The liquid phase material enters the material inlet at a first pressure, and the gas phase material enters the material inlet at a second pressure to obtain a mixed material.

[0050] Preferably, the first pressure is 0.8 MPa to 2 MPa, for example, it can be 0.8 MPa, 0.9 MPa, 1 MPa, 1.1 MPa, 1.2 MPa, 1.3 MPa, 1.4 MPa, 1.5 MPa, 1.6 MPa, 1.7 MPa, 1.8 MPa, 1.9 MPa or 2 MPa, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0051] Preferably, the flow rate of the liquid material when entering the material inlet at the first pressure is 6 L / min to 10 L / min, for example, it can be 6 L / min, 6.5 L / min, 7 L / min, 7.5 L / min, 8 L / min, 8.5 L / min, 9 L / min, 9.5 L / min or 10 L / min, but is not limited to the listed values, and other unlisted values ​​within this numerical range are also applicable.

[0052] Preferably, the second pressure is 1 MPa to 3 MPa, for example, it can be 1 MPa, 1.2 MPa, 1.4 MPa, 1.6 MPa, 1.8 MPa, 2 MPa, 2.2 MPa, 2.4 MPa, 2.6 MPa, 2.8 MPa or 3 MPa, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0053] Preferably, the flow rate of the gaseous material when entering the material inlet at the second pressure is 3NL / min to 8NL / min, for example, it can be 3NL / min, 3.5NL / min, 4NL / min, 4.5NL / min, 5NL / min, 5.5NL / min, 6NL / min, 6.5NL / min, 7NL / min, 7.5NL / min or 8NL / min, but is not limited to the listed values, and other unlisted values ​​within this numerical range are also applicable.

[0054] As a preferred technical solution of the present invention, the size of the microbubbles is 1 nm to 2 mm, for example, it can be 1 nm, 2 nm, 3 nm, 4 nm, 5 nm, 6 nm, 7 nm, 8 nm, 9 nm, 10 nm, 15 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 60 nm, 80 nm, 100 nm, 200 nm, 500 nm, 1 mm or 2 mm, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0055] As a preferred technical solution of the present invention, the microbubble generating method includes:

[0056] The liquid phase material enters the material inlet at 0.8MPa to 2MPa, and the gas phase material enters the material inlet at 1MPa to 3MPa to obtain a mixed material. The mixed material at the material inlet enters the shell from the inlet of the shell, passes through the dispersion chamber and the shearing component arranged in a cycle, and is discharged from the material outlet at the outlet of the shell to obtain a final material with microbubbles with a size of 1nm to 2mm.

[0057] Compared with the prior art, the present invention has the following beneficial effects:

[0058] The microbubble generating device provided by the present invention can obtain microbubbles with uniform sizes in the micrometer and nanometer levels according to practical needs, and the microbubbles can exist stably in the liquid phase and are not easily aggregated. The microbubble generating device also has the advantages of simple structure, easy disassembly, good sealing, low leakage risk, low energy consumption, low equipment cost and small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a vertical cross-sectional view of a shell in a specific embodiment of the present invention.

[0060] Figure 2 FIG. 1 is a vertical cross-sectional view of a shear assembly according to one embodiment of the present invention.

[0061] Figure 3 It is a vertical cross-sectional view of the first inner member in a specific embodiment of the present invention.

[0062] Figure 4 This is a side view of the first inner component in a direction from the outlet of the shell to the inlet of the shell in a specific embodiment of the present invention.

[0063] Figure 5 It is a vertical cross-sectional view of the second inner member in a specific embodiment of the present invention.

[0064] Figure 6 This is a side view of the second inner component in the direction from the outlet of the shell to the inlet of the shell in a specific embodiment of the present invention.

[0065] Figure 7 It is a vertical cross-sectional view of the third internal component in a specific embodiment of the present invention.

[0066] Figure 8 2 is a vertical cross-sectional view of the microbubble generating device in Example 1 of the present invention.

[0067] Figure 9 It is a vertical cross-sectional view of the fourth inner member in a specific embodiment of the present invention.

[0068] Figure 10 A side view of the fourth inner member from the outlet of the shell to the inlet of the shell in a specific embodiment of the present invention

[0069] Figure 11 2 is a vertical cross-sectional view of the microbubble generating device in Example 2 of the present invention.

[0070] Among them, 1-shell; 2-shear assembly; 3-first internal member; 4-second internal member; 5-third internal member; 6-first structural plate; 7-first through hole; 8-first groove; 9-third structural plate; 10-third through hole; 11-second groove; 12-second structural plate; 13-second through hole; 14-first protrusion; 15-second protrusion; 16-third protrusion; 17-fourth protrusion; 18-dispersion chamber; 19-dispersion net; 20-fourth internal member; 21-threaded area. DETAILED DESCRIPTION

[0071] It should be understood that, in the description of the present invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0072] It should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0073] The technical solution of the present invention is further described below by way of specific embodiments. It should be understood by those skilled in the art that the embodiments are merely to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0074] In one embodiment, the present invention provides a microbubble generating device, such as Figure 1 As shown, the microbubble generating device includes a shell 1 with openings at both ends. Along the direction from the inlet of the shell 1 to the outlet of the shell 1, at least one Figure 2 The shear assembly 2 shown; along the inlet of the housing 1 to the outlet direction of the housing 1, the shear assembly 2 includes Figure 3 and Figure 4 The first inner member 3 shown, Figure 5 and Figure 6 The second inner member 4 shown is the same as Figure 7 The third inner member 5 shown;

[0075] The first inner member 3 includes a first structural plate 6 , on which at least one first through hole 7 is provided, and on a surface of the first structural plate 6 facing the second inner member 4 , at least one first groove 8 is provided;

[0076] The third inner member 5 includes a third structural plate 9 , on which at least one third through hole 10 is provided, and on a surface of the third structural plate 9 facing the second inner member 4 , at least one second groove 11 is provided;

[0077] The second inner member 4 includes a second structural plate 12, on which at least one second through hole 13 is provided. The second structural plate 12 is provided with the same number of first protrusions 14 as the first grooves 8 on the surface of the second structural plate 12 facing the first inner member 3, and each first protrusion 14 is independently inserted into each first groove 8. The first structural plate 6 and the second structural plate 12 are in contact only at the surface edges, and a channel structure is formed between the first structural plate 6 and the second structural plate 12; the second structural plate 12 is provided with the same number of second protrusions 15 as the second grooves 11 on the surface facing the third inner member 5, and each second protrusion 15 is independently inserted into each second groove 11. The third structural plate 9 and the second structural plate 12 are in contact only at the surface edges, and a channel structure is formed between the third structural plate 9 and the second structural plate 12.

[0078] In the present invention, a shear chamber is formed between the first internal component 3, the second internal component 4 and the third internal component 5 in the shear assembly 2. One function of the shear chamber is to generate a high-speed liquid flow by changing the diameter. The bubbles carried by the liquid flow are pulled, cut and broken into smaller bubbles in the shear chamber while constantly changing the flow direction in the shear chamber. The high-speed circular oscillation further pulls and breaks the bubbles. Another function of the shear chamber is to suddenly decelerate the liquid phase carrying the bubbles in the shear chamber by suddenly changing the inner diameter. The bubbles carried by the liquid phase have an inertia difference with the liquid phase. Under the action of the inertia difference, the bubbles carried by the liquid phase and the liquid phase produce relative motion, further impacting and breaking the bubbles, while providing a dispersion space for the bubbles. Under the action of inertia, the microbubbles form a stable gas-liquid film with the liquid phase in the shear chamber, making it difficult for the bubbles that have been formed to coalesce.

[0079] In the present invention, the sizes of the first through hole 7, the second through hole 13 and the third through hole 10 can be adjusted according to actual production needs, or the channel structure between the first internal component 3 and the second internal component 4 in the shearing assembly 2, and the channel structure between the third structural plate 9 and the second structural plate 12 can be adjusted to form shear cavities with different structures, thereby generating microbubbles with different sizes.

[0080] The materials of the various structural components of the microbubble generating device provided by the present invention independently include common metal materials, polymer materials and inorganic materials, and the production cost of the microbubble generating device is low; the metal material includes any one or a combination of at least two of stainless steel, carbon steel, copper, aluminum and zinc; the polymer material includes any one or a combination of at least two of PP, PE, EPDM, NBR, POE and TPU.

[0081] The microbubble generating device provided by the present invention can obtain microbubbles with uniform micron and nanometer sizes according to production practice needs, and the microbubbles can exist stably in the liquid phase and are not easily aggregated. The microbubble generating device also has the advantages of simple structure, easy disassembly, good sealing, low leakage risk, low energy consumption, low equipment cost and small size.

[0082] Furthermore, the inner sidewall of the shell 1 is in contact with the side edges of the first structural plate 6 , the second structural plate 12 and the third structural plate 9 .

[0083] In the present invention, after the inner side wall of the shell 1 is attached to the side edges of the first structural plate 6, the second structural plate 12 and the third structural plate 9, the sealing performance of the microbubble generating device is greatly enhanced and the risk of leakage is reduced.

[0084] Furthermore, the cross-sectional shape of the inner side wall of the housing 1 includes any one of a circle, an ellipse or a polygon.

[0085] Furthermore, a third protrusion 16 is provided at the edge of the surface of the first structural plate 6 facing the second structural plate 12 , and the third protrusion 16 is in contact with the surface of the second structural plate 12 .

[0086] Furthermore, the cross-sectional shape of the inner side wall of the shell 1 is circular, and the third protrusion 16 is a first stepped annular protrusion that gradually increases toward the edge of the first structural plate 6 , and the outermost step of the first stepped annular protrusion contacts the second structural plate 12 .

[0087] Furthermore, a fourth protrusion 17 is provided at the edge of the surface of the third structural plate 9 facing the second structural plate 12 , and the fourth protrusion 17 is in contact with the surface of the second structural plate 12 .

[0088] Furthermore, the cross-sectional shape of the inner side wall of the shell 1 is circular, the fourth protrusion 17 is a second stepped annular protrusion that gradually increases toward the edge of the third structural plate 9 , and the outermost step of the second stepped annular protrusion contacts the second structural plate 12 .

[0089] Furthermore, the cross-sectional shape of the first through hole 7 includes any one of a circle, an ellipse, a heart, a star, or a polygon.

[0090] Furthermore, the cross-sectional shape of the first through hole 7 is a circle with an inner diameter of 0.1 mm to 1 cm.

[0091] Furthermore, the shape of the first groove 8 includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere.

[0092] Furthermore, the cross-sectional shape of the second through hole 13 includes any one of a circle, an ellipse, a heart, a star, or a polygon.

[0093] Furthermore, the cross-sectional shape of the second through hole 13 is a circle with an inner diameter of 0.1 mm to 1 cm.

[0094] Furthermore, the shape of the first protrusion 14 includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere.

[0095] Furthermore, the shape of the second protrusion 15 includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere, or a combination of at least two of them.

[0096] Furthermore, the cross-sectional shape of the third through hole 10 includes any one of a circle, an ellipse, a heart, a star, or a polygon.

[0097] Furthermore, the cross-sectional shape of the third through hole 10 is a circle with an inner diameter of 0.1 mm to 1 cm.

[0098] Furthermore, the shape of the second groove 11 includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere.

[0099] Furthermore, if Figure 8 As shown, the shearing assembly 2 divides the interior of the housing 1 into at least two dispersion chambers 18 .

[0100] One function of the dispersion chamber in the present invention is to create a local low-pressure area by changing the diameter, thereby reducing the solubility of the gas phase in the liquid phase, and causing a portion of the gas already dissolved in the liquid phase to precipitate under a low-pressure environment, thereby forming microbubbles; another function of the dispersion chamber 18 is to suddenly decelerate the liquid phase carrying the bubbles in this space by suddenly changing the inner diameter. The bubbles carried by the liquid phase have an inertia difference with the liquid phase. Under the action of the inertia difference, the bubbles carried by the liquid phase and the liquid phase produce relative motion, further impacting and breaking the bubbles, while providing a dispersion space for the bubbles and, under the action of inertia, allowing the microbubbles to form a stable gas-liquid film with the liquid phase in the dispersion chamber 18, making it difficult for the bubbles that have been formed to coalesce.

[0101] Furthermore, at least one dispersion net 19 is provided in the housing 1 , and the dispersion net 19 is provided in the dispersion cavity 18 .

[0102] The function of the dispersion net 19 in the present invention is to perform preliminary dispersion of the gas phase and the liquid phase and filter impurities, thereby providing protection for the shearing cavity in the shearing component 2.

[0103] Furthermore, the aperture of the dispersion net 19 is 2.5 mesh to 12500 mesh.

[0104] Furthermore, if Figure 9 and Figure 10 As shown, a fourth internal component 20 is further provided in the dispersion chamber 18 . The fourth internal component 20 is in the shape of a ring, and the outer wall of the ring fits with the inner wall of the shell 1 at the corresponding position of the dispersion chamber 18 .

[0105] In the present invention, the fourth internal component 20 is provided in the housing 1, which is beneficial to improving the detachability of the microbubble generating device.

[0106] Furthermore, the cross-sectional shape of the inner side wall of the ring body includes any one of a circle, an ellipse or a polygon.

[0107] Furthermore, a threaded area 21 is provided on the inner side wall of the housing 1 at a position corresponding to the dispersion chamber 18 , which can tighten the internal components and enhance the sealing.

[0108] Furthermore, the length of the threaded area 21 is greater than the width of the fourth inner member 20 .

[0109] Furthermore, a material inlet is provided at the inlet of the shell 1 .

[0110] Furthermore, a material outlet is provided at the outlet of the shell 1 .

[0111] In one specific embodiment, the present invention provides a method for generating microbubbles using the microbubble generating device according to the first aspect, the method comprising:

[0112] The mixture of gaseous material and liquid material enters the shell 1 from the inlet of the shell 1, passes through the shearing component 2, and is discharged from the outlet of the shell 1 to obtain a final material with microbubbles.

[0113] Furthermore, the method for preparing the mixed material includes:

[0114] The liquid phase material enters the material inlet at a first pressure, and the gas phase material enters the material inlet at a second pressure to obtain a mixed material.

[0115] Furthermore, the first pressure is 0.8 MPa to 2 MPa.

[0116] Furthermore, the flow rate of the liquid-phase material when entering the material inlet at the first pressure is 6 L / min to 10 L / min.

[0117] Furthermore, the second pressure is 1 MPa to 3 MPa.

[0118] Furthermore, the flow rate of the gaseous material when entering the material inlet at the second pressure is 3NL / min to 8NL / min.

[0119] Furthermore, the size of the microbubbles is 1 nm to 2 mm.

[0120] Furthermore, the microbubble generating method comprises:

[0121] The liquid phase material enters the material inlet at 0.8MPa to 2MPa, and the gas phase material enters the material inlet at 1MPa to 3MPa to obtain a mixed material. The mixed material at the material inlet enters the shell 1 from the inlet of the shell 1, passes through the dispersion chamber 18 and the shearing component 2 that are circulated in sequence, and is discharged from the material outlet at the outlet of the shell 1 to obtain a final material with microbubbles with a size of 1nm to 2mm.

[0122] Example 1

[0123] This embodiment provides a micro bubble generating device, such as Figure 8 As shown, the microbubble generating device includes a shell 1 with openings at both ends, a material inlet is provided at the inlet of the shell 1, and a material outlet is provided at the outlet of the shell 1; six shearing components 2 are provided in the shell 1 along the direction from the inlet of the shell 1 to the outlet of the shell 1, and the six shearing components 2 divide the interior of the shell 1 into seven dispersion chambers 18; along the direction from the inlet of the shell 1 to the outlet of the shell 1, a dispersion net 19 with an aperture of 2.5 mesh is provided in the first dispersion chamber 18, and a dispersion net 19 with an aperture of 2.5 mesh is provided in the second dispersion chamber 18, the third dispersion chamber 18, the fourth dispersion chamber 18, the fifth dispersion chamber 18 and the sixth dispersion chamber 18 No dispersion net 19 is provided, and a dispersion net 19 with an aperture of 2.5 mesh is provided in the seventh dispersion chamber 18; two fourth internal members 20 are provided on both sides of the dispersion net 19 in the first dispersion chamber 18, and a fourth internal member 20 is provided on the side of the dispersion net 19 in the seventh dispersion chamber 18 facing the entrance of the shell 1, and the fourth internal member 20 is in the shape of a ring, and the outer wall of the ring is in contact with the inner wall of the shell 1 at the corresponding position of the dispersion chamber 18. A threaded area 21 is provided on the inner wall of the shell 1 at the corresponding position of the dispersion chamber 18, and the length of the threaded area 21 is greater than the width of the fourth internal member 20;

[0124] Along the direction from the inlet of the shell 1 to the outlet of the shell 1, the shear assembly 2 includes a first internal member 3, a second internal member 4 and a third internal member 5;

[0125] The first inner member 3 includes a first structural plate 6, which is provided with a first circular through hole 7 with an inner diameter of 1 cm located at the center of the first structural plate 6, and a first ring-shaped groove 8 is provided on the surface of the first structural plate 6 facing the second inner member 4;

[0126] The third inner member 5 includes a third structural plate 9, on which a third circular through hole 10 with an inner diameter of 1 cm is provided at the center of the third structural plate 9, and a second ring-shaped groove 11 is provided on the surface of the third structural plate 9 facing the second inner member 4;

[0127] The second inner member 4 includes a second structural plate 12 , on which sixteen circular second through holes 13 with an inner diameter of 1 cm are provided;

[0128] The cross-sectional shape of the inner side wall of the shell 1 is circular, and the inner side wall of the shell 1 is in contact with the side edges of the first structural plate 6, the second structural plate 12 and the third structural plate 9;

[0129] A first protrusion 14 in the shape of a circular ring is provided on the surface of the second structural plate 12 facing the first inner member 3. The first protrusion 14 is inserted into the first groove 8. A third protrusion 16 is provided on the edge of the surface of the first structural plate 6 facing the second structural plate 12. The third protrusion 16 contacts the second structural plate 12. A channel structure is formed between the first structural plate 6 and the second structural plate 12. The gap between the channel is 1 cm.

[0130] A second protrusion 15 in the shape of a circular ring is provided on the surface of the second structural plate 12 facing the third inner member 5, and the second protrusion 15 is inserted into the second groove 11. A fourth protrusion 17 is provided at the edge of the surface of the third structural plate 9 facing the second structural plate 12, and the fourth protrusion 17 is in contact with the second structural plate 12. A channel structure is formed between the third structural plate 9 and the second structural plate 12, and the gap of the channel is 1m.

[0131] Example 2

[0132] This embodiment provides a micro bubble generating device, such as Figure 11As shown, the microbubble generating device includes a shell 1 with openings at both ends, a material inlet is provided at the inlet of the shell 1, and a material outlet is provided at the outlet of the shell 1; along the direction from the inlet of the shell 1 to the outlet of the shell 1, two shearing components 2 are provided in the shell 1, and the two shearing components 2 divide the interior of the shell 1 into three dispersion chambers 18; along the direction from the inlet of the shell 1 to the outlet of the shell 1, a dispersion net 19 with an aperture of 60 mesh is provided in the first dispersion chamber 18, the dispersion net 19 is not provided in the second dispersion chamber 18, and the third dispersion chamber 18 is provided with a dispersion net 19 with an aperture of 60 mesh. A dispersion net 19 with an aperture of 60 mesh is provided inside; two fourth internal members 20 are provided on both sides of the dispersion net 19 in the first dispersion chamber 18, and a fourth internal member 20 is provided on the side of the dispersion net 19 in the third dispersion chamber 18 facing the entrance of the shell 1. The fourth internal member 20 is in the shape of a torus, and the outer wall of the torus is in contact with the inner wall of the shell 1 at the corresponding position of the dispersion chamber 18. A threaded area 21 is provided on the inner wall of the shell 1 at the corresponding position of the dispersion chamber 18, and the length of the threaded area 21 is greater than the width of the fourth internal member 20;

[0133] Along the direction from the inlet of the shell 1 to the outlet of the shell 1, the shear assembly 2 includes a first internal member 3, a second internal member 4 and a third internal member 5;

[0134] The first inner member 3 includes a first structural plate 6, which is provided with a first circular through hole 7 with an inner diameter of 1 mm located at the center of the first structural plate 6, and a first ring-shaped groove 8 is provided on the surface of the first structural plate 6 facing the second inner member 4;

[0135] The third inner member 5 includes a third structural plate 9, on which a third circular through hole 10 with an inner diameter of 1 mm is provided at the center of the third structural plate 9, and a second ring-shaped groove 11 is provided on the surface of the third structural plate 9 facing the second inner member 4;

[0136] The second inner member 4 includes a second structural plate 12 , on which sixteen circular second through holes 13 with an inner diameter of 1 mm are provided;

[0137] The cross-sectional shape of the inner side wall of the shell 1 is circular, and the inner side wall of the shell 1 is in contact with the side edges of the first structural plate 6, the second structural plate 12 and the third structural plate 9;

[0138] A first protrusion 14 in the shape of a circular ring is provided on the surface of the second structural plate 12 facing the first inner member 3. The first protrusion 14 is inserted into the first groove 8. A third protrusion 16 is provided on the edge of the surface of the first structural plate 6 facing the second structural plate 12. The third protrusion 16 contacts the second structural plate 12. A channel structure is formed between the first structural plate 6 and the second structural plate 12. The gap of the channel is 1 mm.

[0139] A second protrusion 15 in the shape of a circular ring is provided on the surface of the second structural plate 12 facing the third inner member 5, and the second protrusion 15 is inserted into the second groove 11. A fourth protrusion 17 is provided at the edge of the surface of the third structural plate 9 facing the second structural plate 12, and the fourth protrusion 17 is in contact with the second structural plate 12. A channel structure is formed between the third structural plate 9 and the second structural plate 12, and the gap of the channel is 1 mm.

[0140] Example 3

[0141] The present embodiment provides a microbubble generating device, which includes a shell 1 with openings at both ends, a material inlet provided at the inlet of the shell 1, and a material outlet provided at the outlet of the shell 1; ten shearing assemblies 2 are provided in the shell 1 along the direction from the inlet of the shell 1 to the outlet of the shell 1, and the ten shearing assemblies 2 divide the interior of the shell 1 into eleven dispersion chambers 18; along the direction from the inlet of the shell 1 to the outlet of the shell 1, a dispersion net 19 with an aperture of 12500 mesh is provided in the first dispersion chamber 18, a dispersion net 19 with an aperture of 12500 mesh is provided in the second dispersion chamber 18, a dispersion net 19 with an aperture of 12500 mesh is provided in the second dispersion chamber 18, a dispersion net 19 with an aperture of 12500 mesh is provided in the second dispersion chamber 18, a dispersion net 19 with an aperture of 12500 mesh is provided in the second dispersion chamber 18, a dispersion net 19 with an aperture of 12500 mesh is provided in the third dispersion chamber 18, a dispersion net 19 with an aperture of 12500 mesh is provided in the fourth dispersion chamber 18, a dispersion net 19 with an aperture of 12500 mesh is provided in the fifth dispersion chamber 18, a dispersion net 19 with an aperture of 12500 mesh is provided in the sixth dispersion chamber 18, a dispersion net 19 with an aperture of 12500 mesh is provided in the eighth ... The first dispersion chamber 18, the ninth dispersion chamber 18, and the tenth dispersion chamber 18 are not provided with a dispersion net 19, and the eleventh dispersion chamber 18 is provided with a dispersion net 19 with an aperture of 12500 meshes; two fourth internal members 20 are provided on both sides of the dispersion net 19 in the first dispersion chamber 18, and a fourth internal member 20 is provided on the side of the dispersion net 19 in the eleventh dispersion chamber 18 facing the entrance of the shell 1, and the fourth internal member 20 is in the shape of a ring, and the outer wall of the ring is in contact with the inner wall of the shell 1 at the corresponding position of the dispersion chamber 18, and a threaded area 21 is provided on the inner wall of the shell 1 at the corresponding position of the dispersion chamber 18, and the length of the threaded area 21 is greater than the width of the fourth internal member 20;

[0142] Along the direction from the inlet of the shell 1 to the outlet of the shell 1, the shear assembly 2 includes a first internal member 3, a second internal member 4 and a third internal member 5;

[0143] The first inner member 3 includes a first structural plate 6, which is provided with a first circular through hole 7 with an inner diameter of 0.1 mm at the center of the first structural plate 6, and a first ring-shaped groove 8 is provided on the surface of the first structural plate 6 facing the second inner member 4;

[0144] The third inner member 5 includes a third structural plate 9, on which a third circular through hole 10 with an inner diameter of 0.1 mm is provided at the center of the third structural plate 9, and a second ring-shaped groove 11 is provided on the surface of the third structural plate 9 facing the second inner member 4;

[0145] The second inner member 4 includes a second structural plate 12 , on which sixteen circular second through holes 13 with an inner diameter of 0.1 mm are provided;

[0146] The cross-sectional shape of the inner side wall of the shell 1 is circular, and the inner side wall of the shell 1 is in contact with the side edges of the first structural plate 6, the second structural plate 12 and the third structural plate 9;

[0147] A first protrusion 14 in the shape of a circular ring is provided on the surface of the second structural plate 12 facing the first inner member 3. The first protrusion 14 is inserted into the first groove 8. A third protrusion 16 is provided on the edge of the surface of the first structural plate 6 facing the second structural plate 12. The third protrusion 16 contacts the second structural plate 12. A channel structure is formed between the first structural plate 6 and the second structural plate 12. The gap of the channel is 0.1 mm.

[0148] A second protrusion 15 in the shape of a circular ring is provided on the surface of the second structural plate 12 facing the third inner member 5, and the second protrusion 15 is inserted into the second groove 11. A fourth protrusion 17 is provided at the edge of the surface of the third structural plate 9 facing the second structural plate 12, and the fourth protrusion 17 is in contact with the second structural plate 12. A channel structure is formed between the third structural plate 9 and the second structural plate 12, and the gap of the channel is 0.1 mm.

[0149] Example 4

[0150] The present embodiment provides a microbubble generating device, which includes a shell 1 with openings at both ends, a material inlet provided at the inlet of the shell 1, and a material outlet provided at the outlet of the shell 1; ten shearing assemblies 2 are provided in the shell 1 along the direction from the inlet of the shell 1 to the outlet of the shell 1, and the ten shearing assemblies 2 divide the interior of the shell 1 into eleven dispersion chambers 18; along the direction from the inlet of the shell 1 to the outlet of the shell 1, a dispersion net 19 with an aperture of 150 mesh is provided in the first dispersion chamber 18, a dispersion net 19 with an aperture of 150 mesh is provided in the second ... The first dispersion chamber 18, the ninth dispersion chamber 18, and the tenth dispersion chamber 18 are not provided with a dispersion net 19, and the eleventh dispersion chamber 18 is provided with a dispersion net 19 with an aperture of 150 meshes; two fourth internal members 20 are provided on both sides of the dispersion net 19 in the first dispersion chamber 18, and a fourth internal member 20 is provided on the side of the dispersion net 19 in the third dispersion chamber 18 facing the entrance of the shell 1, and the fourth internal member 20 is in the shape of a ring, and the outer wall of the ring is in contact with the inner wall of the shell 1 at the corresponding position of the dispersion chamber 18, and a threaded area 21 is provided on the inner wall of the shell 1 at the corresponding position of the dispersion chamber 18, and the length of the threaded area 21 is greater than the width of the fourth internal member 20;

[0151] Along the direction from the inlet of the shell 1 to the outlet of the shell 1, the shear assembly 2 includes a first internal member 3, a second internal member 4 and a third internal member 5;

[0152] The first inner member 3 includes a first structural plate 6, on which are provided three first square through holes 7 with a side length of 2 mm evenly distributed along the vertical direction on the diameter of the first structural plate 6, and three first circular grooves 8 are provided on the surface of the first structural plate 6 facing the second inner member 4;

[0153] The third inner member 5 includes a third structural plate 9, which is provided with five triangular third through holes 10 with a side length of 3 mm evenly distributed along the horizontal direction on the diameter of the third structural plate 9. The third structural plate 9 is provided with two second grooves 11 in the shape of an annulus on the surface facing the second inner member 4.

[0154] The second inner member 4 includes a second structural plate 12 , on which thirty circular second through holes 13 with an inner diameter of 2.4 mm are provided;

[0155] The cross-sectional shape of the inner side wall of the shell 1 is circular, and the inner side wall of the shell 1 is in contact with the side edges of the first structural plate 6, the second structural plate 12 and the third structural plate 9;

[0156] A first protrusion 14 in the shape of a circular ring is provided on the surface of the second structural plate 12 facing the first inner member 3. The first protrusion 14 is inserted into the first groove 8. A first stepped annular protrusion with three steps gradually increasing toward the edge of the first structural plate 6 is provided at the edge of the surface of the first structural plate 6 facing the second structural plate 12. The outermost step of the first stepped annular protrusion contacts the second structural plate 12. A channel structure is formed between the first structural plate 6 and the second structural plate 12. The gap of the channel is 2.4 mm.

[0157] A second protrusion 15 in the shape of a circular ring is provided on the surface of the second structural plate 12 facing the third inner member 5, and the second protrusion 15 is inserted into the second groove 11. A second stepped annular protrusion with five steps gradually increasing toward the edge of the third structural plate 9 is provided at the edge of the surface of the third structural plate 9 facing the second structural plate 12. The outermost step of the second stepped annular protrusion is in contact with the second structural plate 12, and a channel structure is formed between the third structural plate 9 and the second structural plate 12. The gap of the channel is 2.4 mm.

[0158] Application Example 1

[0159] This application example provides a microbubble generation method using the microbubble generating device in Example 1, the microbubble generation method comprising:

[0160] The liquid phase material enters the material inlet at 15 L / min under 0.3 MPa, and the gas phase material enters the material inlet at 6 NL / min under 0.5 MPa to obtain a mixed material. The mixed material at the material inlet enters the shell 1 from the inlet of the shell 1, passes through the dispersion chamber 18 and the shearing component 2 that are circulated in sequence, and is discharged from the material outlet at the outlet of the shell 1 to obtain a final material with microbubbles with a size of 800 μm to 2000 μm.

[0161] Application Example 2

[0162] This application example provides a microbubble generation method using the microbubble generating device in Example 2, the microbubble generation method comprising:

[0163] The liquid phase material enters the material inlet at 10L / min under 0.8MPa, and the gas phase material enters the material inlet at 8NL / min under 1MPa to obtain a mixed material. The mixed material at the material inlet enters the shell 1 from the inlet of the shell 1, passes through the dispersion chamber 18 and the shearing component 2 that are circulated in sequence, and is discharged from the material outlet at the outlet of the shell 1 to obtain a final material with microbubbles with a size of 1μm-200μm.

[0164] Application Example 3

[0165] This application example provides a microbubble generation method using the microbubble generating device in Example 3, the microbubble generation method comprising:

[0166] The liquid phase material enters the material inlet at 0.5 L / min under 2 MPa, and the gas phase material enters the material inlet at 0.2 NL / min under 3 MPa to obtain a mixed material. The mixed material at the material inlet enters the shell 1 from the inlet of the shell 1, passes through the dispersion chamber 18 and the shearing component 2 that are circulated in sequence, and is discharged from the material outlet at the outlet of the shell 1 to obtain a final material with microbubbles with a size of 1 nm to 200 nm.

[0167] Application Example 4

[0168] This application example provides a microbubble generation method using the microbubble generating device in Example 4, the microbubble generation method comprising:

[0169] The liquid phase material enters the material inlet at 8 L / min under 0.6 MPa, and the gas phase material enters the material inlet at 6 NL / min under 0.8 MPa to obtain a mixed material. The mixed material at the material inlet enters the shell 1 from the inlet of the shell 1, passes through the dispersion chamber 18 and the shearing component 2 that are circulated in sequence, and is discharged from the material outlet at the outlet of the shell 1 to obtain a final material with microbubbles with a size of 300 μm to 700 μm.

[0170] The above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention fall within the protection scope and disclosure scope of the present invention.

Claims

1. A microbubble generating device, characterized in that: The microbubble generating device includes a shell with two ends open, and at least one shearing assembly is provided in the shell along the direction from the inlet of the shell to the outlet of the shell; along the direction from the inlet of the shell to the outlet of the shell, the shearing assembly includes a first internal member, a second internal member and a third internal member; The first inner member includes a first structural plate, the first structural plate is provided with at least one first through hole, and the surface of the first structural plate facing the second inner member is provided with at least one first groove; The third inner member comprises a third structural plate, the third structural plate is provided with at least one third through hole, and the surface of the third structural plate facing the second inner member is provided with at least one second groove; The second inner member includes a second structural plate, at least one second through hole is provided on the second structural plate, and the same number of first protrusions as the first grooves are provided on the surface of the second structural plate facing the first inner member, each of the first protrusions is independently inserted into each of the first grooves, the first structural plate and the second structural plate are in contact only at the surface edges, and a channel structure is formed between the first structural plate and the second structural plate; the same number of second protrusions as the second grooves are provided on the surface of the second structural plate facing the third inner member, each of the second protrusions is independently inserted into each of the second grooves, the third structural plate and the second structural plate are in contact only at the surface edges, and a channel structure is formed between the third structural plate and the second structural plate.

2. The microbubble generating device according to claim 1, characterized in that The inner side wall of the shell is in contact with the side edges of the first structural plate, the second structural plate and the third structural plate.

3. The microbubble generating device according to claim 1, wherein The cross-sectional shape of the inner side wall of the shell includes any one of a circle, an ellipse or a polygon.

4. The microbubble generating device according to claim 3, characterized in that A third protrusion is provided at an edge of a surface of the first structural plate facing the second structural plate, and the third protrusion is in contact with the surface of the second structural plate.

5. The microbubble generating device according to claim 4, characterized in that: The cross-section of the inner side wall of the shell is circular, the third protrusion is a first stepped annular protrusion that gradually increases toward the edge of the first structural plate, and the outermost step of the first stepped annular protrusion contacts the second structural plate.

6. The microbubble generating device according to claim 4, characterized in that A fourth protrusion is provided at an edge of a surface of the third structural plate facing the second structural plate, and the fourth protrusion is in contact with the surface of the second structural plate.

7. The microbubble generating device according to claim 6, characterized in that The cross-section of the inner side wall of the shell is circular, the fourth protrusion is a second stepped annular protrusion that gradually increases toward the edge of the third structural plate, and the outermost step of the second stepped annular protrusion contacts the second structural plate.

8. The microbubble generating device according to claim 1, wherein The cross-sectional shape of the first through hole includes any one of a circle, an ellipse, a heart, a star, or a polygon.

9. The microbubble generating device according to claim 8, characterized in that: The cross-sectional shape of the first through hole is a circle with an inner diameter of 0.1 mm to 1 cm.

10. The microbubble generating device according to claim 1, wherein The shape of the first groove includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere.

11. The microbubble generating device according to claim 1, wherein The cross-sectional shape of the second through hole includes any one of a circle, an ellipse, a heart, a star, or a polygon.

12. The microbubble generating device according to claim 11, characterized in that: The cross-section of the second through hole is a circle with an inner diameter of 0.1 mm to 1 cm.

13. The microbubble generating device according to claim 1, wherein The shape of the first protrusion includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere.

14. The microbubble generating device according to claim 1, wherein The shape of the second protrusion includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere.

15. The microbubble generating device according to claim 1, characterized in that: The cross-sectional shape of the third through hole includes any one of a circle, an ellipse, a heart, a star, or a polygon.

16. The microbubble generating device according to claim 15, characterized in that: The cross-sectional shape of the third through hole is a circle with an inner diameter of 0.1 mm to 1 cm.

17. The microbubble generating device according to claim 1, characterized in that The shape of the second groove includes any one of a ring, a cylinder, a prism, a cone, a pyramid, a frustum, a truncated pyramid and a sphere.

18. The microbubble generating device according to claim 1, characterized in that The shearing assembly divides the interior of the shell into at least two dispersion chambers.

19. The microbubble generating device according to claim 18, characterized in that At least one dispersion net is further provided in the shell, and the dispersion net is provided in the dispersion cavity.

20. The microbubble generating device according to claim 19, wherein: The aperture of the dispersion net is 2.5 mesh to 12500 mesh.

21. The microbubble generating device according to claim 18, characterized in that A fourth internal component is further provided in the dispersion chamber. The fourth internal component is in the shape of a ring. The outer wall of the ring fits with the inner wall of the shell at the corresponding position of the dispersion chamber.

22. The microbubble generating device according to claim 21, characterized in that The cross-sectional shape of the inner side wall of the ring body includes any one of a circle, an ellipse or a polygon.

23. The microbubble generating device according to claim 21, wherein A threaded area is provided on the inner side wall of the shell at a position corresponding to the dispersion cavity.

24. The microbubble generating device according to claim 23, wherein: The length of the threaded area is greater than the width of the fourth inner member.

25. The microbubble generating device according to claim 1, characterized in that A material inlet is provided at the inlet of the shell.

26. The microbubble generating device according to claim 1, characterized in that A material outlet is provided at the outlet of the shell.

27. A method for generating microbubbles using the microbubble generating device according to any one of claims 1 to 26, characterized in that: The microbubble generating method comprises: The mixture of gaseous material and liquid material enters the shell from the inlet of the shell, passes through the shearing component, and is discharged from the outlet of the shell to obtain the final material with microbubbles.

28. The microbubble generating method according to claim 27, characterized in that: The method for preparing the mixed material comprises: The liquid phase material enters the material inlet at a first pressure, and the gas phase material enters the material inlet at a second pressure to obtain a mixed material.

29. The microbubble generating method according to claim 28, characterized in that: The first pressure is 0.8 MPa to 2 MPa.

30. The microbubble generating method according to claim 28, wherein: The second pressure is 1 MPa to 3 MPa.

31. The microbubble generating method according to claim 27, wherein: The size of the microbubbles is 1 nm to 2 mm.

32. The microbubble generating method according to claim 27, wherein: The microbubble generating method comprises: The liquid phase material enters the material inlet at 0.8MPa to 2MPa, and the gas phase material enters the material inlet at 1MPa to 3MPa to obtain a mixed material. The mixed material at the material inlet enters the shell from the inlet of the shell, passes through the dispersion chamber and the shearing component arranged in a cycle, and is discharged from the material outlet at the outlet of the shell to obtain a final material with microbubbles with a size of 1nm to 2mm.

Images