CN211025862U - Micro-bubble generator and micro-bubble generating device - Google Patents

Micro-bubble generator and micro-bubble generating device Download PDF

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CN211025862U
CN211025862U CN201921315107.XU CN201921315107U CN211025862U CN 211025862 U CN211025862 U CN 211025862U CN 201921315107 U CN201921315107 U CN 201921315107U CN 211025862 U CN211025862 U CN 211025862U
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micro
micropore
transmission shaft
microporous
shaft
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肖灿
曹尉南
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Hunan Yina Environmental Protection Technology Co ltd
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Hunan Yina Environmental Protection Technology Co ltd
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Abstract

The utility model belongs to the technical field of water treatment, and relates to a micro-bubble generator, which comprises a micro-pore device, a hollow tube, a rotary joint, a motor, a power output shaft, a transmission shaft and an air pump; the motor is connected with the micropore device through the power output shaft and the transmission shaft in sequence and drives the micropore device to rotate around the axial direction of the transmission device; the air pump is communicated with the micropore device through the rotary joint and the hollow pipe in sequence and inputs air into the micropore device; micropores with the porosity not lower than 28% are arranged on the surface of the micropore device; the pore diameter of the micropores is 0.01-2 um; the gas entering the microporous device overflows through micropores on the surface of the microporous device to form bubbles with the particle size of 5-100 um. The utility model provides a micro-bubble generator which has low energy consumption and simple structure and can generate a large amount of high-density micro-bubbles with uniform particle diameters stably in a liquid phase for a long time.

Description

Micro-bubble generator and micro-bubble generating device
Technical Field
The utility model belongs to the technical field of the water treatment, a bubble generating device is related to, especially, relate to a micro-bubble generator.
Background
The fine bubbles are bubbles having a particle diameter of 1 to 200um formed by dispersing gas in a liquid by a physicochemical method. The micro-bubbles are applied to the fields of sewage treatment, sludge concentration, mineral separation, black and odorous water treatment, health care and the like, and the generation modes of the micro-bubbles comprise a pressurized gas dissolving method, a multiphase gas dissolving pump method, an induction method and the like.
The basic principle of the pressurized gas dissolving method is as follows: firstly, dissolving air or other gases in raw water to be treated under the action of a certain pressure to reach a supersaturated state, and then reducing the pressure of the dissolved gas water to make the dissolved gas form micro-bubbles. The method has the advantages of more complex equipment composition, higher operation energy consumption and larger equipment floor area.
The multiphase dissolved air pump method uses a multiphase dissolved air pump to replace an air compressor, a filler dissolved air tank and other devices in the traditional pressurizing dissolved air method, the processes of water pressurization, air suction and air dissolution shearing are completed in one multiphase dissolved air pump, and the sewage at the outlet of the pump already contains a large amount of micro bubbles. Although the multiphase dissolved air pump method has simple configuration and easy operation and maintenance, the problems of power consumption and the cost of the pump are not negligible. Experimental research also finds that the multiphase dissolved air pump has strong shearing emulsification effect on raw water, and for some raw water (such as oily sewage and the like), the negative effect of the shearing emulsification cannot be ignored, and even the purification efficiency is greatly reduced.
The induction method is divided into a mechanical induction method and a hydraulic induction method. The mechanical induction method is also called as an impeller rotary cutting method, and mainly depends on a motor to drive an impeller to rotate, the negative pressure environment generated by a working chamber causes gas to automatically enter, and then shearing is completed to generate micro bubbles. The main disadvantage of this technique is that the diameter of microbubbles is large and uneven, and the application thereof is severely limited. The hydraulic induction method is also called as a jet flow method, the key component of the jet flow method is a jet device or a high-speed venturi tube, the flow velocity of water flow at the throat section is higher, the pressure is lower, so that gas automatically enters, and then shearing is completed to generate micro bubbles. The micro-bubbles generated by the jet method have larger grain size, the efficiency of the micro-bubbles is greatly influenced by the exit aperture of the jet device or the high-speed venturi tube, the requirements on the water quality and the pressure entering the nozzle are strict, and the purification efficiency can be greatly influenced by smaller fluctuation.
The utility model discloses a utility model patent that publication number is CN103193288B discloses a sewage air supporting is with fine bubble generator, and the technical scheme that this patent adopted is: the gas passes through the micropores of the microporous pipe and is continuously washed and sheared by the rotating water flow to form micro-bubbles, and the water flow carries the formed micro-bubbles to be discharged from the outlet pipe. The utility model discloses a hardly satisfy the microbubble particle diameter simultaneously very even, the three requirement that bubble density is high and the energy consumption is low, and easily grows the microorganism in the micropore of micropore pipe and forms the jam to restrict the application of this technique.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem existing in the background art, the utility model provides a micro-bubble generator which has low energy consumption and simple structure and can stably generate a large amount of high-density micro-bubbles with uniform particle size in a liquid phase for a long time.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a micro-bubble generator comprises a micro-pore device, a hollow shaft, a rotary joint, a motor, a power output shaft, a transmission shaft and an air pump; the motor drives the transmission shaft through the transmission device, and the transmission shaft is connected with the micropore device and drives the micropore device to rotate around the axial direction of the transmission shaft; the air pump is communicated with the micropore device through the rotary joint and the hollow shaft in sequence and inputs air into the micropore device; micropores with the porosity of not less than 28% are arranged on the surface of the micropore device; the pore diameter of the micropores is 0.01-2 um; the gas entering the microporous device overflows through micropores on the surface of the microporous device to form bubbles with the particle size of 5-100 um.
Preferably, the rotation speed of the microporous device used in the present invention is 700-3000 rpm when the microporous device rotates around the axial direction of the transmission device.
Preferably, the utility model discloses a through the flow of control pressure air make porous pipe inside and outside differential pressure maintain 5000-.
Preferably, the transmission shaft adopted by the utility model is a hollow shaft, when the transmission shaft is a hollow shaft, one end of the transmission shaft is connected with the micropore device, the other end of the transmission shaft is connected with the rotary joint, the motor drives the transmission shaft to rotate through the transmission device, and the transmission shaft drives the micropore device to rotate around the axial direction of the transmission shaft; the micro-bubble generator also comprises a box body; the micropore device is arranged in the box body; and a bearing assembly is arranged between the transmission shaft and/or the hollow pipe and the box body.
A micro-bubble generating device comprising one or more sets of micro-bubble generators as described above, wherein when the micro-bubble generators are multiple sets, the multiple sets of micro-bubble generators are connected in series or in parallel.
Since the technical scheme is used, the utility model has the advantages of as follows and effect:
the utility model provides a micro-bubble generator, utilize micropore pipe or micropore dish rotatory in liquid, the gaseous in-process that passes through the micropore pipe takes place once to cut, when gaseous passes through the interface of liquid and micropore pipe, because the relative motion (or called velocity gradient) of micropore pipe and liquid, gaseous receives the secondary shearing, thereby form the bubble that fine and particle diameter are comparatively all, wherein the aperture of micropore medium is 0.01-2um, the porosity is not less than 28%, the sintering material of material for adopting such as titanium alloy, pottery, polyethylene, zirconia; the rotation speed of the microporous tube or the microporous disc is 700-. The particle size of the formed bubbles is 5-100 um. The pressure difference between the inside and the outside of the microporous tube is 5000-. The utility model can effectively generate micro bubbles with enough quantity and uniform size, and can completely meet the process requirement; because of the high-speed relative motion between the surface of the micropore medium and the liquid, a strong self-cleaning effect is formed, the trouble of cleaning caused by blocking the micropore pipe by impurities in the treated liquid is avoided, and the long-term stable operation can be realized. When the shearing action of the same size is needed, if the scheme that the microporous tube or the microporous disc is static is adopted, the speed of the liquid needs to be improved to a great extent, great energy is consumed, and the utility model discloses only need overcome the resistance of liquid, with greatly reduced energy consumption. The utility model discloses simple structure, compactness can effectively save space, have the application advantage to the higher operating mode of space requirement, and its working cost is low, easily promotes and popularizes.
Drawings
Fig. 1 is a schematic structural diagram of a micro-bubble generator according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of a micro-bubble generator according to the present invention;
FIG. 3 is a schematic structural diagram of a micro-bubble generator according to a third embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a micro-bubble generator according to a fourth embodiment of the present invention;
fig. 5 is a schematic diagram of a micro-bubble generator provided in the present invention for generating micro-bubbles;
wherein:
1-a power take-off shaft; 2-a transmission shaft; 3-a microporous tube; 4-a micro-porous disc; 5-a bearing assembly; 6-a hollow tube; 7-a swivel joint; 8-a compressed air inlet; 9-a box body; 10-a driving wheel; 11-a driven wheel; 12-a motor; 13-micro-fine bubbles.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.
The utility model firstly provides a micro-bubble generation method, which is characterized in that a micro-hole tube or a micro-hole disc is communicated with one end of a hollow shaft, the other end of the hollow shaft enters pressure gas to enable the gas to enter the inner cavity of the micro-hole tube or the micro-hole disc through the inside of the hollow shaft, the micro-hole tube or the micro-hole disc is driven to rotate around a shaft in a liquid phase by using a mechanical or artificial method, the porosity of the micro-hole tube or the micro-hole disc is not less than 28 percent, and the pore diameter of the micro-hole tube or the micro-hole disc is 0.01-2 um; the particle size of the formed bubbles is 5-100 um; the microporous tube is installed in an axial horizontal mode; the microporous disk is mounted in an axially vertical manner. When the microporous tube or the microporous disk is connected with the hollow shaft, the axes of the microporous tube or the microporous disk and the hollow shaft are coincident or approximately coincident.
Wherein, the microporous tube 3 or the microporous disc 4 is a sintered microporous tube 3 or a sintered microporous disc 4 made of titanium alloy, ceramic, polyethylene, zirconia or other materials; the rotation speed of the microporous tube 3 or the microporous disk 4 is 700-3000 r/min; the pressure difference between the inside and the outside of the microporous tube 3 or the microporous disk 4 is 5000-.
Meanwhile, the utility model provides a micro-bubble generator based on the above method, the micro-bubble generator comprises a micro-hole device, a hollow tube 6, a rotary joint 7, a motor 12, a power output shaft 1, a transmission shaft 2 and an air pump; the motor 12 is connected with the micropore device through the power output shaft 1 and the transmission shaft 2 in sequence and drives the micropore device to rotate around the axial direction of the transmission shaft; the air pump is communicated with the micropore device through the rotary joint 7 and the hollow pipe 6 in sequence and inputs air into the micropore device; micropores with the porosity not lower than 28% are arranged on the surface of the micropore device; the pore diameter of the micropores is 0.01-2 um; the gas entering the micropore device overflows through micropores on the surface of the micropore device to form micro bubbles 13 with the particle size of 5-100 um. The rotational speed of the microporous device about the axial direction of the transmission device is 700-. The micropore device is a micropore pipe 3 or a micropore disk 4; the pressure difference between the inside and the outside of the microporous tube 3 or the microporous disk 4 is 5000-. When the transmission shaft 2 is a hollow shaft, one end of the transmission shaft 2 is connected with the micropore device, the other end of the transmission shaft 2 is connected with the rotary joint 7, the motor drives the transmission shaft 2 to rotate through the transmission device, and the transmission shaft 2 drives the micropore device to rotate around the axial direction of the transmission shaft 2; the micro-bubble generator also comprises a box body 9; the micropore device is arranged in the box body 9; a bearing assembly 5 is arranged between the transmission shaft 2 and (or) the hollow pipe 6 and the box body 9.
The rotary joint is a closed connecting device for delivering liquid and gas media in a rotating state, and is provided with a rotating end and a fixed end, wherein the fixed end is used for inputting a target medium, and the rotating end is connected with the rotating body and used for delivering the target medium to the rotating body.
In addition, according to the difference of the requirement of treatment effect or the difference of the working flow demand, the micro-bubble generator provided by the utility model can be combined in a series or parallel mode, and can even be used for oxygenating raw water and assisting in strengthening the aerobic biochemical process.
The first embodiment is as follows:
as shown in fig. 1 and 5, the micro bubble generator of the present invention includes a transmission shaft 2, a rotary joint 7, a sealing device, and a cylindrical microporous tube 3 which is communicated with the rotary joint 7 and has a closed end. In this embodiment, the transmission shaft 2 is a solid shaft, the transmission shaft 2 is connected to the sealed end of the microporous tube 3 by using a clamp, a thread, or welding, the open end of the microporous tube 3 is connected to one end of the hollow shaft 6 in a threaded manner or a snap fit manner, the other end of the hollow shaft is connected to the rotating end of the rotary joint 7 in a threaded manner, and the fixed end of the rotary joint 7 is connected to the air pump. The transmission shaft 2 is horizontally installed. The power is supplied by a motor 12, and the motor 12 is fixed on the box body 9. The power output shaft 1 of the motor 12 is connected with the solid transmission shaft 2 through a coupler, and the other end of the transmission shaft 2 is connected with the closed end of the microporous pipe 3 through threads. The microporous tube 3 is a titanium sintered tube. The open end of the microporous tube 3 is communicated with a hollow tube 6 through a thread, and the other end of the hollow tube 6 is connected with a rotary joint 7 through a thread. In order to make the rotation of the microporous tube 3 more stable, the bearing assembly 5 is used to bear the force. The contact positions of the transmission shaft 2 of the solid shaft, the hollow pipe 6 and the wall surface of the container are respectively sealed by adopting a sealing device. The power output shaft 1 drives the transmission shaft 2 of the solid shaft to rotate, the transmission shaft 2 of the solid shaft drives the microporous tube 3 to rotate at the same angular speed, compressed gas enters the rotary joint 7 through the fixed end inlet of the rotary joint and then enters the microporous tube 3 through the hollow tube 6, the compressed gas passes through micron-sized holes in the microporous tube 3 under the action of pressure, the microporous tube 3 and peripheral liquid have great speed gradient, and the external liquid can strongly cut the gas when the gas is separated from the micropores, so that a large number of micro-bubbles 13 are formed, and micro-bubbles enter the liquid around the microporous tube 3 at the latest.
Example two:
as shown in fig. 2, the micro-bubble generator provided by the present invention mainly comprises a transmission shaft 2, a rotary joint 7, a sealing device, and a disc-shaped micro-porous disc 4 which is communicated with the rotary joint 7 and has a closed end. In this embodiment, the transmission shaft 2 is a solid shaft, the transmission shaft 2 is connected to the sealing end of the microporous disk 4 by using a clamp, a thread or welding method, the opening end of the microporous disk 4 is connected to the hollow tube 6 in a screw or a buckle manner, the other end of the hollow tube 6 is connected to the rotary joint 7 by a thread, and the fixed end of the rotary joint 7 is connected to the air pump. The transmission shaft 2 is vertically installed. The power is supplied by a motor 12, and the motor 12 is fixed on the box body 9. The power output shaft 1 of the motor 12 is connected with the solid transmission shaft 2 through a coupler, and the other end of the transmission shaft 2 is connected with the closed end of the microporous disc 4 through threads. The micropore plate 4 is a titanium sintering plate, the opening end of the micropore plate 4 is connected with the hollow tube 6 through threads, and the other end of the hollow tube 6 is connected with the rotary joint 7 through threads. In order to make the rotation of the micro-perforated disc 4 more stable, the bearing assembly 5 is used to bear the force. The hollow tube is sealed at the contact with the wall of the container by a sealing means (sealing member, conventional technique). The power output shaft 1 drives the transmission shaft 2 of the solid shaft to rotate, the transmission shaft 2 of the solid shaft drives the micropore disk 4 to rotate at the same angular speed, compressed gas enters the rotary joint 7 through the fixed end of the rotary joint and then enters the micropore disk 4 through the hollow tube 6, as the micropore disk 4 and peripheral liquid have great speed gradient, external liquid can form strong secondary cutting on bubbles, a large number of micro-fine bubbles 13 are formed through the shearing action of the micropore disk 4 and the surrounding liquid interface after passing through micron-sized holes on the micropore disk 4, and micro-bubbles enter the surrounding liquid of the micropore disk 4 at the latest.
Example three:
as shown in fig. 3, the micro-bubble generator of the present invention mainly comprises a transmission shaft 2, a rotary joint 7, a sealing device, and a cylindrical microporous tube 3 which is communicated with a hollow tube 6 and has a sealed end. In the embodiment, the transmission shaft 2 is a hollow shaft, and the part of the hollow shaft penetrating through the box body 9 adopts mechanical seal; the power output shaft 1 drives the transmission shaft 2 sequentially through the coupler, the driving wheel 10 and the driven wheel 11; one end of the transmission shaft 2 in the box body is connected with the opening end of the microporous tube 3, one end of the transmission shaft 2 outside the box body is connected with the rotating end of the rotating joint 7, and the fixed end of the rotating joint 7 is connected with compressed air; in order to make the rotation of the microporous tube 3 more stable, the drive shaft 2 may be fixed using a bearing. The transmission shaft 2 is horizontally installed. One end of the hollow shaft 2 outside the box body is connected with the rotating end of the rotating joint 7 through threads, and the other end of the hollow shaft 2 is connected with the opening end of the microporous pipe 3 through threads. The motor is fixed on the box body 9, a driven belt pulley is installed on the hollow transmission shaft, and the power output shaft 1 drives the hollow transmission shaft 2 to rotate through the coupler, the driving belt pulley and the driven belt pulley. The motor 12 drives the microporous tube 3 to rotate at high speed through the power output shaft 1, the coupling belt pulley and the transmission shaft 2. In order to make the rotation of the microporous tube 3 more stable, the bearing assembly 5 is used to bear the force. The transmission shaft 2 and the box body 9 are sealed by a sealing device. The transmission shaft 2 drives the microporous tube 3 to rotate at the same angular speed, compressed gas enters the rotary joint 7 through the fixed end of the rotary joint and enters the microporous tube 3 through the transmission shaft 2, the external liquid can strongly cut bubbles again due to the fact that the microporous tube 3 and peripheral liquid have a great speed gradient, a large number of micro-fine bubbles 13 are formed by shearing action of the microporous tube 3 and surrounding liquid interfaces after the gas passes through micron-sized holes in the microporous tube 3, and micro-bubbles enter liquid around the microporous tube 3 at last. The motor type rotation speed and the material of the microporous tube 3 are the same as those in the first embodiment.
Example four:
as shown in fig. 4, the micro-bubble generator provided by the present invention mainly comprises a transmission shaft 2, a rotary joint 7, a sealing device, and a disc-shaped micro-porous disc 4 which is communicated with the hollow transmission shaft 2 and has a closed end. In the embodiment, the transmission shaft 2 is a hollow shaft, and the part of the hollow shaft penetrating through the box body 9 adopts mechanical seal; the power output shaft 1 drives the transmission shaft 2 sequentially through the coupler, the driving wheel 10 and the driven wheel 11; one end of the transmission shaft 2 outside the box body is connected with the rotating end of the rotating joint 7, and the fixed end of the rotating joint 7 is connected with compressed air; in order to make the rotation of the microporous disc 4 more stable, the drive shaft 2 may be fixed using bearings. The transmission shaft 2 is vertically installed. The stiff end on the rotary joint is compressed air entry 8, and the rotatory end of rotary joint 7 is connected with 2 one end of cavity transmission shaft through the screw thread, and the other end of cavity transmission shaft 2 is connected with the open end of micropore dish 4 through the screw thread. The motor is fixed on the box body 9, a driven belt pulley is arranged on the transmission shaft 2, and the power output shaft 1 drives the transmission shaft 2 through a coupler, a belt, a driving wheel and a driven wheel. The motor 12 drives the microporous disc 4 to rotate at high speed through the power output shaft 1, the belt transmission and the transmission shaft 2. In order to make the rotation of the micro-perforated disc 4 more stable, the bearing assembly 5 is used to bear the force. The transmission shaft 2 drives the micropore plate 4 to rotate at the same angular speed, compressed gas enters the rotary joint 7 through a compressed air inlet 8 at a fixed end on the rotary joint and enters the micropore plate 4 through the hollow pipe 6, and due to the fact that the micropore plate 4 and peripheral liquid have large speed gradient, after the gas passes through micron-sized pores on the micropore plate 4, a large number of micro-fine bubbles 13 are formed through the shearing action of the micropore plate 4 and the peripheral liquid interface, and micro-bubbles finally enter the liquid around the micropore plate 4. The motor type rotation speed and the material of the micropore plate 4 are the same as those of the second embodiment.
The above embodiments are only used for illustrating the present invention, wherein the size of the pore of the microporous tube 3 or the microporous disk 4, the porosity, the pressure difference inside and outside the microporous tube 3 or the microporous disk 4, the rotation speed of the microporous tube 3 or the microporous disk 4, and other factors directly affect the formation effect of the micro-bubbles. Furthermore, it is also possible to increase the number of generated fine bubbles by changing the length of the entire fine bubble generator, particularly the micro-porous tube 3, by working two or more in series, or the like; for the micro-bubble generators with the same type and specification, the requirement of the number of the micro-bubbles can be met by two or more parallel operation modes and the like.
Obviously, the novel micro-bubble generator can also be used to oxygenate liquids when the source gas is air or other gas with a higher oxygen content.
The foregoing is only an embodiment of the present invention, and various modifications and variations of the embodiment of the present invention can be made by those skilled in the art according to the technical concept disclosed in the specification without departing from the spirit and scope of the present invention.

Claims (6)

1. A micro-bubble generator, characterized in that: the micro-bubble generator comprises a micro-pore device, a hollow pipe (6), a rotary joint (7), a motor (12), a power output shaft (1), a transmission shaft (2) and an air pump; the motor (12) is connected with the micropore device through the power output shaft (1) and the transmission shaft (2) in sequence and drives the micropore device to rotate around the axial direction of the transmission device; the air pump is communicated with the micropore device through the rotary joint (7) and the hollow pipe (6) in sequence and inputs air into the micropore device; micropores with the porosity of not less than 28% are arranged on the surface of the micropore device; the pore diameter of the micropores is 0.01-2 um; the gas entering the microporous device overflows through micropores on the surface of the microporous device to form bubbles with the particle size of 5-100 um.
2. The micro-bubble generator according to claim 1, wherein: a compressed air inlet (8) is formed in the rotary joint (7), and the compressed air inlet (8) is communicated with the hollow pipe (6); the air pump inputs air into the hollow pipe (6) through the compressed air inlet (8).
3. The micro-bubble generator according to claim 2, wherein: when the micropore device rotates around the axial direction of the transmission device, the rotating speed of the micropore device is 700-3000 r/min.
4. The fine bubble generator according to any one of claims 1 to 3, wherein: the micropore device is a micropore pipe (3) or a micropore disc (4); the internal and external pressure difference of the microporous tube (3) or the microporous disc (4) is 5000-.
5. The micro-bubble generator according to claim 4, wherein: the transmission shaft (2) is a solid shaft or a hollow shaft; when the transmission shaft (2) is a solid shaft, the transmission shaft (2) and the hollow tube (6) are respectively connected with the micropore device; when the transmission shaft (2) is a hollow shaft, the transmission shaft (2) is sleeved outside the hollow tube (6) and is respectively connected with the micropore devices; the micro-bubble generator also comprises a box body (9); the micropore device is arranged in the box body (9); and a bearing assembly (5) is arranged between the transmission shaft (2) and/or the hollow pipe (6) and the box body (9).
6. A micro-bubble generating device is characterized in that: the micro-bubble generating device comprises one or more groups of micro-bubble generators as described above, and when the micro-bubble generators are multiple groups, the multiple groups of micro-bubble generators are connected in series or in parallel.
CN201921315107.XU 2019-08-14 2019-08-14 Micro-bubble generator and micro-bubble generating device Active CN211025862U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022218333A1 (en) * 2021-04-15 2022-10-20 马闽雄 Micro bubble generation method and generation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022218333A1 (en) * 2021-04-15 2022-10-20 马闽雄 Micro bubble generation method and generation device

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