CN118203967A - Device and method for generating micro-nano bubble-containing liquid - Google Patents
Device and method for generating micro-nano bubble-containing liquid Download PDFInfo
- Publication number
- CN118203967A CN118203967A CN202410240501.0A CN202410240501A CN118203967A CN 118203967 A CN118203967 A CN 118203967A CN 202410240501 A CN202410240501 A CN 202410240501A CN 118203967 A CN118203967 A CN 118203967A
- Authority
- CN
- China
- Prior art keywords
- liquid
- micro
- air inlet
- negative pressure
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 229
- 239000002101 nanobubble Substances 0.000 title claims abstract description 143
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000000694 effects Effects 0.000 claims abstract description 47
- 230000011218 segmentation Effects 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 25
- 238000002156 mixing Methods 0.000 abstract description 19
- 239000007789 gas Substances 0.000 description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000012229 microporous material Substances 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 238000010008 shearing Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Abstract
The invention relates to the technical field of gas-liquid two-phase mixing, and discloses a device and a method for generating micro-nano bubble-containing liquid. A method of generating a micro-nano bubble-containing liquid comprising the steps of: the liquid is conveyed to the venturi tube at a constant speed and a constant pressure, a negative pressure effect is generated at the throat part of the venturi tube, and a high Reynolds number turbulence is formed in a negative pressure area of the venturi tube; micro-nano bubbles are prepared by utilizing the airflow segmentation effect of micropores and are communicated to a negative pressure area of the venturi, the micro-nano bubbles are sucked into the negative pressure area under the negative pressure effect of the venturi negative pressure area, and the micro-nano bubbles sucked into the negative pressure area enter high-Reynolds-number turbulence to be further crushed and uniformly dispersed into liquid; outputting the liquid with uniformly mixed micro-nano bubbles. The micro-nano bubble liquid with high concentration can be produced in a large quantity by a relatively simple method, and the uniform and controllable bubble particle size is realized.
Description
Technical Field
The invention relates to the technical field of gas-liquid two-phase mixing, in particular to a method for generating micro-nano bubble-containing liquid. In addition, the invention also relates to a device for generating the micro-nano bubble-containing liquid.
Background
Many tiny bubbles may exist in the liquid, and when the bubble diameter is 100 μm or less, the bubbles having a diameter of 100nm or less are called microbubbles. Micro-nano bubbles refer to bubbles having diameters between tens of micrometers and hundreds of nanometers when the bubbles occur.
Whether micro-bubbles, nano-bubbles or micro-nano bubbles are characterized by small size and large specific surface area, the micro-nano bubbles often have physical and chemical characteristics which are not possessed by conventional bubbles, such as surface charge, high adsorption efficiency, slow rising speed in liquid, stable existence in liquid for a long time, and the like. For convenience of description, micro-nano bubbles are collectively referred to below.
Liquids containing micro-nano bubbles have been widely used in recent years due to their many unique properties.
Most typically micro-nano bubble water.
The micro-nano bubbles are introduced into the water, so that solid impurities in the water can be effectively separated, the oxygen concentration of the water body can be rapidly increased, harmful bacteria in the water can be killed, and the friction coefficient of a solid-liquid interface can be reduced, and the micro-nano water purifying device is widely applied to the fields of air flotation water purification, water oxygenation, ozone water disinfection, micro-bubble drag reduction and the like.
The micro-nano bubble generator is a core device for generating micro-nano bubble-containing liquid, and the performance of the micro-nano bubble generator directly influences the size, the quantity and the uniformity of generated bubbles. There are many different types depending on the method of producing the micro-nano bubble-containing liquid.
At present, many methods for manufacturing the liquid containing the micro-nano bubbles exist, such as a mechanical cutting stirring method, a pressurized dissolved air releasing method, a water temperature difference method, an electric field method, an ultrasonic method and the like.
The pressurizing and gas dissolving efficiency is very low, and the manufacturing cost is high; the water temperature difference method, the electric field method and the ultrasonic method are complex in equipment, complex in operation process and high in energy consumption, and are limited in popularization in practical application.
The mechanical cutting stirring method is the most commonly used method at present and is the most efficient method. The gas-liquid two-phase flow is cut and stirred by mechanical components such as impellers and the like rotating at high speed, so that bubbles are broken and uniformly mixed with liquid. This method requires an impeller or similar mechanical device that rotates at high speed, and is thus complex in structure. It is also combined with a pump to form a gas-liquid mixing pump.
The simplest method is to utilize the shearing cavitation phenomenon when the liquid flows to release the gas originally dissolved in the liquid to form micro-nano bubbles. However, since the solubility of air in water at normal temperature and pressure is less than 2%, and the air is not likely to be released all the way to form bubbles, the amount and concentration of bubbles in the micro-nano bubble-containing liquid thus produced are very limited.
In the prior art, the manufacturing scheme of the micro-nano bubble-containing liquid mainly has the following problems:
1. the structure is complex, and in the process of manufacturing the liquid containing micro-nano bubbles, an external power source is required to input energy;
2. The air inflow is small, and a large amount of high-concentration micro-nano bubble-containing liquid can be generated through various equipment combinations; the particle size is not very convenient to precisely control, and the particle size of micro-nano bubbles can be controlled only by an aeration device in general; the method is more suitable for generating micron-sized bubbles, and the concentration is lower when nano-sized bubbles are generated.
3. The shearing cavitation phenomenon during the liquid flow is utilized to release the gas originally dissolved in the liquid to form micro-nano bubbles, and an external air source cannot be utilized, so that the quantity and the concentration of generated bubbles are limited.
4. The micro-nano bubbles are generated by means of a gas-liquid mixing pump, and the structure is relatively complex.
Disclosure of Invention
The invention provides a device and a method for generating micro-nano bubble-containing liquid, which are used for producing high-concentration micro-nano bubble-containing liquid in a large quantity by a relatively simple method, and realizing uniform and controllable bubble particle size so as to solve the technical problems that the existing manufacturing scheme of the micro-nano bubble-containing liquid is complex in structure, an external power source is needed, an external air source cannot be selected and utilized, and the number, concentration and uniformity of bubbles are difficult to control.
According to one aspect of the present invention, there is provided a method of generating a micro-nano bubble-containing liquid, comprising the steps of: the liquid is conveyed to the venturi tube at a constant speed and a constant pressure, a negative pressure effect is generated at the throat part of the venturi tube, and a high Reynolds number turbulence is formed in a negative pressure area of the venturi tube; micro-nano bubbles are prepared by utilizing the airflow segmentation effect of micropores and are communicated to a negative pressure area of the venturi, the micro-nano bubbles are sucked into the negative pressure area under the negative pressure effect of the venturi negative pressure area, and the micro-nano bubbles sucked into the negative pressure area enter high-Reynolds-number turbulence to be further crushed and uniformly dispersed into liquid; outputting the liquid with uniformly mixed micro-nano bubbles.
Further, the Reynolds number Re of the high Reynolds number turbulence formed in the negative pressure zone of the venturi is more than or equal to 10000.
According to another aspect of the present invention, there is provided a device for generating a liquid containing micro-nano bubbles, including a liquid inlet cylinder, a liquid outlet cylinder and a core rod assembly which are sequentially arranged, wherein the liquid inlet cylinder, the liquid outlet cylinder and the core rod assembly are coaxially arranged, and the liquid inlet cylinder, the liquid inlet cylinder and the liquid outlet cylinder are connected into an integral structure through the core rod assembly; the liquid inlet end of the core rod assembly is used as the liquid inlet end of the venturi and limited in the liquid inlet cylinder, the liquid outlet end of the core rod assembly is used as the liquid outlet end of the venturi and limited in the liquid outlet cylinder, and the protruding part of the middle section of the core rod assembly is correspondingly arranged with the air inlet cylinder in the radial direction and forms a throat annular channel of the venturi; the air inlet cylinder adopts a micropore structure, and the liquid inlet cylinder and the liquid outlet cylinder are coated outside the air inlet cylinder and are provided with a ventilation channel for communicating the air inlet cylinder with the outside.
Further, the venturi throat diameter d m is designed according to the following formula:
Wherein:
d m is the venturi throat diameter in m;
q is volume flow, and the unit is m 3/s;
R e is the Reynolds number, R e is more than or equal to 10000;
v is the fluid kinematic viscosity in square meters per second.
Further, the material of the air inlet cylinder is microporous ceramic, foamed metal or metal sintered microporous filter material, the porosity of the material is less than or equal to 10 percent, and the maximum radial size of micropores is less than or equal to 2 mu m.
Further, the air inlet cylinder comprises an inner liner layer, a middle microporous layer and an outer framework layer, wherein the inner liner layer is a metal grid supporting layer or a ceramic grid supporting layer, the middle microporous layer is a microporous filter membrane layer, and the outer framework layer is a metal framework or a ceramic framework; the microporous filter membrane layer has a microporous maximum radial dimension of less than or equal to 2 μm.
Further, the outside of the air inlet cylinder is also annularly provided with a protective sleeve, the protective sleeve and the air inlet cylinder are distributed at intervals, a buffer air inlet chamber is formed between the protective sleeve and the air inlet cylinder, and at least one air inlet hole is formed in the protective sleeve.
Further, the air inlet hole is connected with an air inlet nozzle, a one-way air inlet valve or an air generator.
Further, a plurality of groups of air inlets are axially and/or circumferentially distributed on the protective sleeve, the same groups of air inlets are mutually and parallelly distributed, the hole shape and the hole diameter are the same, and at least one of the hole orientations, the hole shapes or the hole diameters of different groups of air inlets are different.
Further, the protective sleeve is arranged between the liquid inlet cylinder and the liquid outlet cylinder in a sliding manner along the axial direction and/or the circumferential direction, and the number of air inlets and/or the types of the air inlets communicated with the outside are controlled through the matching of the protective sleeve and the holes between the liquid inlet cylinder and/or the liquid outlet cylinder.
The invention has the following beneficial effects:
The method for generating the liquid containing the micro-nano bubbles comprehensively utilizes the negative pressure effect of a venturi, the shearing and mixing effect of high-Reynolds-number turbulence on fluid and the dividing effect of microporous materials on air flow; when the liquid is conveyed at a fixed speed, a fixed flow and a fixed pressure and passes through the venturi, a negative pressure effect is generated in the throat area of the venturi, a negative pressure area with stable negative pressure is formed, stable high-Reynolds-number turbulence is formed in the negative pressure area, micro-nano bubbles with uniform and stable particle size are prepared and generated by utilizing the airflow dividing effect of micropores on the basis and are communicated to the negative pressure area of the venturi, the stably generated micro-nano bubbles are sucked into the negative pressure area through the negative pressure effect of the negative pressure area and are further crushed through the high-Reynolds-number turbulence, so that the micro-nano bubbles are formed to be more tiny and uniformly dispersed into the liquid in the narrow area of the throat area, and the liquid uniformly mixed with the high-concentration micro-nano bubbles is stably output. The air source can be introduced from the outside, the corresponding air source amount can be controlled at will, micro-nano bubbles with uniform particle size can be produced through the air flow segmentation effect of the micropores, and therefore the concentration of the micro-nano bubbles in the liquid and/or the gas type can be adjusted at will. The particle size and concentration of micro-nano bubbles can be easily controlled by adjusting the speed, flow and pressure of liquid and/or adjusting the speed, flow and pressure of an air source and combining high-Reynolds-number turbulence with micro-nano bubbles prepared and entering through micropores. The micro-nano bubble liquid with high concentration can be produced in a large quantity by a relatively simple method, and the uniform and controllable particle size of the micro-nano bubbles is realized.
The invention relates to a device for generating micro-nano bubble-containing liquid, which adopts a liquid inlet cylinder, a liquid outlet cylinder and a core rod assembly which are sequentially arranged to form a venturi, wherein a middle section protruding part of the core rod assembly is correspondingly arranged with the liquid inlet cylinder in the radial direction and forms a throat annular channel of the venturi, and the communication between a ventilation channel reserved between the liquid inlet cylinder and the liquid outlet cylinder and the liquid inlet cylinder is utilized to realize air source supply and micropore air flow division; the liquid with constant speed, constant flow and constant pressure is stably supplied from the liquid inlet cylinder and passes through the constructed venturi tube, a negative pressure effect is generated in the throat region of the venturi tube, a negative pressure region with stable negative pressure is formed, a stable high-Reynolds-number turbulence is formed in the negative pressure region, gas is sucked from the outside by utilizing the negative pressure effect of the negative pressure region on the basis, stable and equal-diameter micro-nano bubbles are formed by the micro-pore segmentation effect of the gas inlet cylinder, the stably generated micro-nano bubbles are sucked into the negative pressure region and are further crushed by the high-Reynolds-number turbulence, and tiny and uniform micro-nano bubbles are formed and uniformly dispersed into the liquid in the narrow region of the throat region, so that the liquid uniformly mixed with the high-concentration micro-nano bubbles is stably output. The air source can be introduced from the outside, the corresponding air source amount can be controlled at will, micro-nano bubbles with uniform particle size can be produced through the air flow segmentation effect of the micropores, and therefore the concentration of the micro-nano bubbles in the liquid and/or the gas type can be adjusted at will. The particle size and concentration of micro-nano bubbles can be easily controlled by adjusting the speed, flow and pressure of liquid and/or adjusting the speed, flow and pressure of an air source and combining high-Reynolds-number turbulence with micro-nano bubbles prepared and entering through micropores. The device for generating the micro-nano bubble-containing liquid can be used for mass production of high-concentration micro-nano bubble-containing liquid in a relatively simple mode, and the uniform and controllable bubble particle size is realized.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a schematic structural view of an apparatus for generating a micro-nano bubble-containing liquid according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of a mandrel assembly according to a preferred embodiment of the present invention;
FIG. 3 is a schematic view of the structure of a feed cylinder according to a preferred embodiment of the present invention;
FIG. 4 is a schematic view of the structure of a liquid outlet barrel according to the preferred embodiment of the invention;
FIG. 5 is a schematic structural view of a device for generating micro-nano bubble-containing liquid with a protective sleeve according to a preferred embodiment of the present invention;
FIG. 6 is a schematic illustration of the construction of a sliding belt protective sleeve according to a preferred embodiment of the present invention;
FIG. 7 is a schematic illustration of the sliding adjustment of the sliding belt protective sleeve of the preferred embodiment of the present invention;
FIG. 8 is a schematic diagram of an embodiment of an apparatus for generating a liquid containing micro-nano bubbles according to the present invention.
Legend description:
100. A liquid inlet cylinder; 101. an inner step; 102. an end step; 200. an air inlet cylinder; 300. a liquid outlet cylinder; 400. a mandrel assembly; 401. a bolt set; 402. a liquid inlet channel; 403. a middle section protruding portion; 404. a liquid outlet channel; 405. a middle through hole; 500. a protective sleeve; 501. an air inlet hole; 600. a buffer intake chamber; 700. a throat annular passage; 800. a seal; 900. a filter screen; 1000. a one-way air inlet valve; 21. a filter; 22. a pump; 23. a device for generating a liquid containing micro-nano bubbles; 24. a spray head or an aeration device; 25. a pressure gauge; 26. a flow regulating valve.
Detailed Description
Embodiments of the invention are described in detail below with reference to the attached drawing figures, but the invention can be practiced in a number of different ways, as defined and covered below.
FIG. 1 is a schematic structural view of an apparatus for generating a micro-nano bubble-containing liquid according to a preferred embodiment of the present invention; FIG. 2 is a schematic structural view of a mandrel assembly according to a preferred embodiment of the present invention; FIG. 3 is a schematic view of the structure of a feed cylinder according to a preferred embodiment of the present invention; FIG. 4 is a schematic view of the structure of a liquid outlet barrel according to the preferred embodiment of the invention; FIG. 5 is a schematic structural view of a device for generating micro-nano bubble-containing liquid with a protective sleeve according to a preferred embodiment of the present invention; FIG. 6 is a schematic illustration of the construction of a sliding belt protective sleeve according to a preferred embodiment of the present invention; FIG. 7 is a schematic illustration of the sliding adjustment of the sliding belt protective sleeve of the preferred embodiment of the present invention; FIG. 8 is a schematic diagram of an embodiment of an apparatus for generating a liquid containing micro-nano bubbles according to the present invention.
The method for generating the micro-nano bubble-containing liquid in the embodiment comprises the following steps: the liquid is conveyed to the venturi tube at a constant speed and a constant pressure, a negative pressure effect is generated at the throat part of the venturi tube, and a high Reynolds number turbulence is formed in a negative pressure area of the venturi tube; micro-nano bubbles are prepared by utilizing the airflow segmentation effect of micropores and are communicated to a negative pressure area of the venturi, the micro-nano bubbles are sucked into the negative pressure area under the negative pressure effect of the venturi negative pressure area, and the micro-nano bubbles sucked into the negative pressure area enter high-Reynolds-number turbulence to be further crushed and uniformly dispersed into liquid; outputting the liquid with uniformly mixed micro-nano bubbles. The method for generating the liquid containing the micro-nano bubbles comprehensively utilizes the negative pressure effect of a venturi, the shearing and mixing effect of high-Reynolds-number turbulence on fluid and the dividing effect of microporous materials on air flow; when the liquid is conveyed at a fixed speed, a fixed flow and a fixed pressure and passes through the venturi, a negative pressure effect is generated in the throat area of the venturi, a negative pressure area with stable negative pressure is formed, stable high-Reynolds-number turbulence is formed in the negative pressure area, micro-nano bubbles with uniform and stable particle size are prepared and generated by utilizing the airflow dividing effect of micropores on the basis and are communicated to the negative pressure area of the venturi, the stably generated micro-nano bubbles are sucked into the negative pressure area through the negative pressure effect of the negative pressure area and are further crushed through the high-Reynolds-number turbulence, so that the micro-nano bubbles are formed to be more tiny and uniformly dispersed into the liquid in the narrow area of the throat area, and the liquid uniformly mixed with the high-concentration micro-nano bubbles is stably output. The air source can be introduced from the outside, the corresponding air source amount can be controlled at will, micro-nano bubbles with uniform particle size can be produced through the air flow segmentation effect of the micropores, and therefore the concentration of the micro-nano bubbles in the liquid and/or the gas type can be adjusted at will. The particle size and concentration of micro-nano bubbles can be easily controlled by adjusting the speed, flow and pressure of liquid and/or adjusting the speed, flow and pressure of an air source and combining high-Reynolds-number turbulence with micro-nano bubbles prepared and entering through micropores. The micro-nano bubble liquid with high concentration can be produced in a large quantity by a relatively simple method, and the uniform and controllable particle size of the micro-nano bubbles is realized.
In the embodiment, the Reynolds number Re of the high Reynolds number turbulence formed in the negative pressure zone of the venturi is more than or equal to 10000; the mixing effect, the high-Reynolds number turbulence is beneficial to mixing between different liquids and gases and liquids, so that the mixing efficiency is improved, and in the venturi tube, the high-speed turbulence can promote the liquids and the gases to be better mixed, so that the mass transfer efficiency is improved; emulsification, which is aided by high reynolds number turbulence, causes the liquid to be dispersed in the form of tiny droplets and to combine with another immiscible gas or liquid; the high-Reynolds number turbulence is helpful for breaking up the bubbles, so that the bubbles become smaller, and in the venturi tube, the high-speed turbulence can promote the bubbles to break up, so as to generate micro-nano bubbles; the stability of the bubbles is improved, the high-Reynolds number turbulence is beneficial to improving the stability of the bubbles, so that the bubbles are not easy to merge or collapse, and the high-speed turbulence can promote the bubbles to become more stable in the venturi tube, so that the service life of the bubbles is prolonged; the high Reynolds number turbulence helps to improve the mass transfer efficiency, so that the gas is better dissolved into the liquid, and the high-speed turbulence can promote the gas to be better dissolved into the liquid in the venturi. When the Reynolds number Re of the high Reynolds number turbulence formed in the negative pressure area of the venturi is less than 10000, the turbulence degree in the venturi is weakened, the dissolution and aggregation of gas in liquid tend to be incomplete, and the micro-nano bubbles are uneven in size and distribution.
In this embodiment, the micro-nano bubbles with uniform and stable particle size are produced by the airflow splitting effect of the micropores, wherein the pore diameter of the micropores is less than or equal to 2 μm.
As shown in fig. 1, 2,3 and 4, the device for generating micro-nano bubble-containing liquid in this embodiment includes a liquid inlet cylinder 100, a liquid inlet cylinder 200, a liquid outlet cylinder 300 and a core rod assembly 400, which are sequentially arranged, wherein the liquid inlet cylinder 100, the liquid inlet cylinder 200, the liquid outlet cylinder 300 and the core rod assembly 400 are coaxially arranged, and the liquid inlet cylinder 100, the liquid inlet cylinder 200 and the liquid outlet cylinder 300 are connected into an integral structure through the core rod assembly 400; the liquid inlet end of the core rod assembly 400 is used as the liquid inlet end of the venturi tube and is limited in the liquid inlet barrel 100, the liquid outlet end of the core rod assembly 400 is used as the liquid outlet end of the venturi tube and is limited in the liquid outlet barrel 300, and the middle protruding part 403 of the core rod assembly 400 is correspondingly arranged with the air inlet barrel 200 in the radial direction and forms a throat annular channel 700 of the venturi tube; the air intake tube 200 adopts a microporous structure, and the liquid intake tube 100 and the liquid outlet tube 300 are coated outside the air intake tube 200 and are provided with ventilation channels for communicating the air intake tube 200 with the outside. The invention relates to a device for generating micro-nano bubble-containing liquid, which adopts a liquid inlet cylinder 100, a liquid inlet cylinder 200, a liquid outlet cylinder 300 and a core rod assembly 400 which are sequentially arranged to form a venturi, wherein a middle protruding part 403 of the core rod assembly 400 is correspondingly arranged with the liquid inlet cylinder 200 in the radial direction and forms a throat annular channel 700 of the venturi, and the communication between a ventilation channel reserved between the liquid inlet cylinder 100 and the liquid outlet cylinder 300 and the liquid inlet cylinder 200 is utilized to realize air source supply and micropore air flow segmentation; the liquid with constant speed, constant flow and constant pressure is stably supplied from the liquid inlet cylinder 100 and passes through the constructed venturi tube, a negative pressure effect is generated in the throat region of the venturi tube, a negative pressure region with stable negative pressure is formed, stable high-Reynolds number turbulence is formed in the negative pressure region, gas is sucked from the outside by utilizing the negative pressure effect of the negative pressure region, stable and equal-diameter micro-nano bubbles are formed by the micro-pore segmentation effect of the gas inlet cylinder 200, the stably generated micro-nano bubbles are sucked into the negative pressure region and are further crushed by the high-Reynolds number turbulence, so that more tiny and uniform micro-nano bubbles are formed and uniformly dispersed into the liquid in a narrow region of the throat region, and the liquid uniformly mixed with the high-concentration micro-nano bubbles is stably output. The air source can be introduced from the outside, the corresponding air source amount can be controlled at will, micro-nano bubbles with uniform particle size can be produced through the air flow segmentation effect of the micropores, and therefore the concentration of the micro-nano bubbles in the liquid and/or the gas type can be adjusted at will. The particle size and concentration of micro-nano bubbles can be easily controlled by adjusting the speed, flow and pressure of liquid and/or adjusting the speed, flow and pressure of an air source and combining high-Reynolds-number turbulence with micro-nano bubbles prepared and entering through micropores. The device for generating the micro-nano bubble-containing liquid can be used for mass production of high-concentration micro-nano bubble-containing liquid in a relatively simple mode, and the uniform and controllable bubble particle size is realized.
In this embodiment, the venturi throat diameter d m is designed according to the following formula:
Wherein Q is volume flow, v is fluid kinematic viscosity, R e is Reynolds number, and Reynolds number R e is more than or equal to 10000; the mixing effect, the high-Reynolds number turbulence is beneficial to mixing between different liquids and gases and liquids, so that the mixing efficiency is improved, and in the venturi tube, the high-speed turbulence can promote the liquids and the gases to be better mixed, so that the mass transfer efficiency is improved; emulsification, which is aided by high reynolds number turbulence, causes the liquid to be dispersed in the form of tiny droplets and to combine with another immiscible gas or liquid; the high-Reynolds number turbulence is helpful for breaking bubbles, so that the bubbles are smaller, and in the venturi tube, the high-speed turbulence can promote micro-nano bubbles to be further and uniformly broken, so as to generate micro-nano bubbles which are smaller and more uniform; the stability of micro-nano bubbles is improved, the high-Reynolds number turbulence is beneficial to improving the stability of the bubbles, so that the bubbles are not easy to merge or break, and in the venturi tube, the high-speed turbulence can promote the micro-nano bubbles to become more stable, so that the maintenance life of the micro-nano bubbles is prolonged; the mass transfer efficiency is improved, the high-Reynolds number turbulence is helpful to improve the mass transfer efficiency, so that the gas is better dissolved into the liquid, and the high-speed turbulence can promote the micro-nano bubbles to be better dissolved into the liquid in the venturi tube. When the Reynolds number Re of the high Reynolds number turbulence formed in the negative pressure area of the venturi is less than 10000, the turbulence degree in the venturi is weakened, the dissolution and aggregation of gas in liquid tend to be incomplete, and the micro-nano bubbles are uneven in size and distribution.
In the embodiment, the material of the air inlet cylinder 200 is microporous ceramic, foam metal or metal sintered microporous filter material, the porosity of the material is less than or equal to 10%, and the maximum radial size of micropores is less than or equal to 2 mu m; the design of the diameter d m in the throat of the venturi is combined, the Reynolds number R e is more than or equal to 10000, so that micro-nano bubbles can be further and uniformly crushed in the venturi by using high Reynolds number turbulence to generate micro-nano bubbles which are more tiny and uniform, the micro-nano bubbles are further more stable by using high Reynolds number turbulence, the maintenance life of the micro-nano bubbles is prolonged, and the micro-nano bubbles are further better dissolved into liquid. When the maximum radial dimension of the micropores of the air inlet cylinder 200 is too large and larger than 2 μm, the generated bubbles become large, and the oversized bubbles possibly affect gas-liquid mixing after entering the venturi tube, because when the bubbles are too large, the surface tension is relatively large, so that the bubbles are easier to keep in a spherical shape and are not easy to be further broken through the turbulent flow action of a high Reynolds number; in addition, excessively large bubbles may cause difficulty in sufficiently contacting the gas inside thereof with the liquid, thereby affecting the gas-liquid mixing effect; excessive air bubbles may also have other effects in the venturi, such as increasing pressure drop, causing turbulence in the air flow, etc., which may result in reduced efficiency of the venturi and may require more power to overcome the additional pressure drop; the above problems are more pronounced especially when the Reynolds number Re is greater than or equal to 10000.
In this embodiment, the air intake cylinder 200 includes an inner liner layer, a middle microporous layer and an outer skeleton layer, wherein the inner liner layer is a metal grid supporting layer or a ceramic grid supporting layer, the middle microporous layer is a microporous filter membrane layer, and the outer skeleton layer is a metal skeleton or a ceramic skeleton; the microporous filter membrane layer has a microporous maximum radial dimension of less than or equal to 2 μm. Compared with the integral structure of the air inlet cylinder 200, the structure is changed into a laminated sleeving structure, the structure molding is simpler, the aperture control and the micropore path control of the micropore structure can be realized through the membrane layer structure design and the layer number design, and the flexibility is higher.
As shown in fig. 5, 6 and 7, in the present embodiment, a protection sleeve 500 is further disposed around the air inlet tube 200, the protection sleeve 500 is disposed at a distance from the air inlet tube 200, a buffer air inlet chamber 600 is formed between the protection sleeve 500 and the air inlet tube 200, and at least one air inlet hole 501 is formed on the protection sleeve 500. External gas enters the buffer air inlet chamber 600 through the protective sleeve 500 for buffering, and is subjected to air flow division through the air inlet cylinder 200 to gradually form equal-diameter and uniform micro-nano bubbles, so that the realization of the shearing mixing effect of high-Reynolds-number turbulence is facilitated, and liquid containing high-concentration, equal-diameter and uniform micro-nano bubbles is further prepared; and the method is favorable for accurately controlling the input quantity, speed and pressure of the air source, and further accurately controlling the particle size and uniformity of micro-nano bubbles in the prepared micro-nano bubble-containing liquid.
In the present embodiment, as shown in fig. 5, an air inlet nozzle, a unidirectional air inlet valve 1000 or a gas generator is connected to the air inlet hole 501. According to the air intake requirement, different interfaces can be matched with the air intake hole 501 or different gas generating devices can be connected, so that one gas or a plurality of gases can be introduced quantitatively, at constant pressure and constant speed. In particular, in combination with the buffer intake chamber 600 between the protection sleeve 500 and the intake cylinder 200, a plurality of gases may be mixed in the buffer intake chamber 600, then micro-nano bubbles are prepared and formed in the air flow dividing effect through the micro-holes, and finally sucked into the throat annular channel 700 of the venturi tube by the negative pressure. Optionally, a filter screen 900 is further laid in the air inlet hole 501; because the entering gas can be prepared to form micro-nano bubbles through the airflow segmentation effect of the micropores, and the entering gas is inevitably accompanied with solid particles, the filter screen 900 is arranged on the air inlet hole 501, so that the solid particles carried by the gas can be effectively filtered, the micropores are prevented from being blocked by the solid particles, and the service life of the air inlet cylinder 200 is prolonged. Optionally, a gas pressure sensor or a gas flow sensor may be disposed at the output end of the air inlet 501, so as to timely obtain the change of the gas pressure or the flow, and further determine whether the filter screen 900 is blocked, so that the filter screen 900 is replaced timely, and the device is ensured to operate stably.
As shown in fig. 5, 6 and 7, in this embodiment, multiple groups of air inlets 501 are axially and/or circumferentially arranged on the protection sleeve 500, the same group of air inlets 501 are arranged parallel to each other and have the same hole shape and aperture, and at least one of the hole orientations, hole shapes or apertures of different groups of air inlets 501 is different. The communicated and introduced air inlet holes 501 can be selected according to actual needs, so that the air can be input to the air inlet cylinder 200 from different positions and/or at different angles. Particularly, when part of the air inlets 501 are blocked, the stable conveying of the liquid containing micro-nano bubbles can be realized by adjusting the air inlet pressure, air inlet amount and air inlet speed of other air inlets 501. The venturi throat negative pressure suction, microporous airflow segmentation and high Reynolds number turbulence further crushing and dispersing comprehensive effects are better according to different parameters such as the type, the characteristics, the pressure, the conveying amount, the speed and the like of the gas, the gas needs to be conveyed to different positions of the air inlet cylinder 200 through the air inlet hole 501 and input at different angles; for example, it is desirable to be inclined toward the inlet end of the throat annular channel 700, it is desirable to be inclined toward the outlet end of the throat annular channel 700, it is desirable to be inclined in the circumferential direction of the throat annular channel 700, it is desirable to be air-fed in the tangential direction of the throat annular channel 700, and so on. Optionally, each air inlet hole 501 is provided with a unidirectional air inlet valve 1000, so that different gas generators can be communicated or external air can be directly sucked according to the requirement; or external air may be adaptively inhaled according to the negative pressure of the throat annular channel 700.
As shown in fig. 6 and 7, in the present embodiment, the protection sleeve 500 is slidably disposed between the liquid inlet barrel 100 and the liquid outlet barrel 300 along the axial direction and/or the circumferential direction, and the number of air inlets 501 and/or the types of the air inlets 501 communicating with the outside are controlled by the hole cooperation between the protection sleeve 500 and the liquid inlet barrel 100 and/or the liquid outlet barrel 300; by controlling the attaching relation between the protective sleeve 500 and the liquid inlet cylinder 100 and the liquid outlet cylinder 300, the partial opening or the full closing of the air inlet hole 501 is further controlled, and the purposes that the external air enters the buffer air inlet chamber 600 in different air inflow directions, different air inlet positions and the like or is directly prepared to form micro-nano bubbles through the air flow dividing effect of micropores of the liquid inlet cylinder 100 are further realized; the application range of the device is wider, and the universality is better. Optionally, the protective sleeve 500 has a control handle extending outwardly along the length. Optionally, the protection sleeve 500 is connected to a control motor for controlling the axial movement and/or circumferential rotation of the protection sleeve 500. Alternatively, the micropore diameters of the air intake cylinder 200 are arranged in an increasing or decreasing manner in the axial direction, and are matched to different micropore diameter areas by sliding the protection sleeve 500. Alternatively, the micropore diameters of the air inlet cylinder 200 are arranged in a segmented manner in the axial direction, and the micropore diameters of different segmented units are different, so that the air inlet cylinder is matched with different micropore pore regions through the sliding of the protection sleeve 500.
When in use, the method is provided, microporous materials commonly used for filtering are applied to the field of gas-liquid mixing, the entering gas is divided into gas flow microbeams and then enters the liquid, and then the microbeam gas flow is broken into micro-nano bubbles by utilizing shearing and mixing effects of high-Reynolds-number turbulence and is uniformly mixed into the whole liquid. In principle, the method effectively utilizes the split effect of the microporous material on the air flow, the negative pressure effect of the venturi on the fluid and the shearing and mixing effect of the high-Reynolds-number turbulence on the fluid. Specifically, when the liquid flows, a negative pressure area is formed through the venturi tube, high Reynolds number turbulence (Re is more than or equal to 10000) is formed in the negative pressure area, meanwhile, gas is sucked into the negative pressure area through the microporous material (the aperture is less than or equal to 2 mu m), and the sucked gas is crushed and uniformly dispersed into the whole liquid.
As one application of the method, the invention also provides a device capable of realizing the method, the main body of the device is a venturi tube with two thick ends and a thin middle part of an inner cavity, and the medium diameter d m of the venturi tube is designed according to the following formula:
Wherein Q is volume flow, v is fluid kinematic viscosity, R e is Reynolds number, and Reynolds number R e is more than or equal to 10000. The narrowest throat in the middle of the venturi has an inlet channel composed of microporous material (pore size. Ltoreq.2 μm).
As shown in fig. 1, the main body is composed of an inner cavity surrounded by a liquid inlet cylinder 100, a liquid outlet cylinder 300, a gas inlet cylinder 200 and a core rod assembly 400, wherein the liquid inlet cylinder 100, the gas inlet cylinder 200 and the liquid outlet cylinder 300 are coaxially arranged in sequence, sealing rings (sealing elements 800) are respectively arranged between the liquid inlet cylinder 100 and the gas inlet cylinder 200 and between the gas inlet cylinder 200 and the liquid outlet cylinder 300, the core rod assembly 400 is arranged inside and coaxially with the liquid inlet cylinder 100 and the gas inlet cylinder 200, an annular gap is formed between the outer wall of a middle protruding part 403 with the enlarged middle section diameter of the core rod assembly 400 and the inner wall of the gas inlet cylinder 200, and the annular gap forms a throat annular channel 700 of a venturi tube. The whole device is connected into a whole by a bolt sleeve 401 (comprising a screw, a nut and a gasket).
As shown in FIG. 2, the core rod assembly 400 has a larger size at one end and a plurality of cavity channels (liquid inlet channels 402) therein for communicating with the inner cavity of the liquid inlet barrel 100 to form a venturi liquid inlet region with a larger sectional area. The core rod assembly 400 has a larger middle section diameter to form a middle section protrusion 403, which occupies the space inside the gas cylinder 200, and forms a venturi throat (throat annular channel 700) having a smaller cross-sectional area. The central through bore 405 of the mandrel assembly 400 is the mounting bore of the bolt assembly 401.
The air intake cylinder 200 located in the middle of the whole device, except that the air intake cylinder 200 itself contains a plurality of micro-fine pore channels (aperture is less than or equal to 2 μm) to form the air intake passage of the venturi throat, except that the air intake cylinder 200 forms the venturi throat (throat annular passage 700) with the middle protruding part 403 of the core rod assembly 400, the middle protruding part of which has a larger diameter, surrounding an annular space with a smaller cross section. The intake cartridge 200 may be of both the integral type and the combined type. The integral air inlet cylinder is made of microporous ceramic or microporous stainless steel, and the micropores inside the integral air inlet cylinder are used for forming an air inlet channel. The combined air inlet cylinder is at least composed of three layers, the middle layer material provides an air inlet channel for the microporous filter membrane, the inner lining stainless steel grid is used as a support of the filter membrane, and the outer stainless steel or ceramic framework is of a bearing structure.
As shown in fig. 3, the inner step 101 of the feed cylinder 100 is used to position the mandrel assembly 400, and the end step 102 of the feed cylinder 100 is used to mount the feed cylinder 200 and the seal ring.
As shown in fig. 4, the liquid outlet barrel 300 is internally provided with a supporting structure, a middle through hole 405 of the supporting structure is used for installing a bolt sleeve 401 (comprising a screw, a nut and a gasket), and a plurality of peripheral holes (liquid outlet channels 404) are communicated with the cavities at two sides to form a venturi liquid outlet area with larger sectional area.
Because the mandrel assembly 400 and the liquid outlet cylinder 300 have complex structures, the mandrel assembly 400 can be decomposed into a plurality of simple parts which are easy to process and combined when necessary.
In the long-term use process, various dust particles exist in the air, so that the microporous material is easy to block due to long time. To avoid frequent replacement of the intake cylinder 200, a protective sleeve 500 may be added to the outside of the intake cylinder 200, as shown in fig. 5. The protection sleeve 500 is provided with an air inlet hole 501, and a buffer air inlet chamber 600 communicating with the air inlet hole 501 is formed between the inner wall of the protection sleeve 500 and the outer wall of the air inlet cylinder 200. A filter screen 900 is installed in the air inlet hole 501 in a stepped manner, so that the air (or other inlet air) can be primarily filtered.
According to the application requirement, in the case of using compressed air or other air sources such as ozone, a sealing ring (sealing piece 800) can be arranged between the protective sleeve 500 and the liquid inlet cylinder 100 and the liquid outlet cylinder 300, and a one-way air inlet valve 1000 capable of being connected with a compressed air source pipeline is arranged in the air inlet hole 501.
When several different gases are required to be introduced simultaneously, the gases can be mixed according to the required proportion and then introduced from the air inlet nozzle, but an additional gas mixing device is required. For simplicity, a plurality of air inlet holes 501 may be provided on the sleeve, and each air inlet hole 501 is provided with an air inlet nozzle (one-way air inlet valve 1000) respectively, so that different gases can be introduced simultaneously.
As shown in fig. 8. The device 23 for generating the liquid containing the micro-nano bubbles is connected into a pipeline system, the number of branches is determined according to the size requirement of a required area, and the pressure of each branch is regulated to be between 0.3 and 0.8MPa, so that a large amount of liquid containing the micro-nano bubbles can be prepared.
In operation, bubble-free, normal liquid is drawn into the pump 22 through the filter 21 and then fed through the piping system to the means 23 for generating micro-nano bubble-containing liquid in each branch, thereby producing micro-nano bubble liquid which is released into the desired environment through the nozzle or aeration means 24 at the end of the piping. Wherein the pressure gauge 25 is used for monitoring the pressure of the liquid entering the device 23 for generating the liquid containing micro-nano bubbles, so that the device always works in a normal working state.
In order to independently regulate the flow of each branch, a flow regulating valve 26 is incorporated in each branch.
In order to obtain micro-nano bubbles with different particle size distribution, the air inlet cylinder 200 can be replaced. The inlet cartridge 200 may have a variety of specifications for selection and replacement depending on the maximum pore size of the micropores thereon. For example, an inlet cylinder 200 having a maximum aperture of 2 microns may divide the incoming gas into gas flow micro-bundles having a maximum diameter of 2 microns. These gas flow microbeams are sheared into micro-nano bubbles immediately after being sucked into high reynolds number turbulence by negative pressure and are uniformly mixed into the whole liquid.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method of forming a micro-nano bubble-containing liquid comprising the steps of:
the liquid is conveyed to the venturi tube at a constant speed and a constant pressure, a negative pressure effect is generated at the throat part of the venturi tube, and a high Reynolds number turbulence is formed in a negative pressure area of the venturi tube;
Micro-nano bubbles are prepared by utilizing the airflow segmentation effect of micropores and are communicated to a negative pressure area of the venturi, the micro-nano bubbles are sucked into the negative pressure area under the negative pressure effect of the venturi negative pressure area, and the micro-nano bubbles sucked into the negative pressure area enter high-Reynolds-number turbulence to be further crushed and uniformly dispersed into liquid;
outputting the liquid with uniformly mixed micro-nano bubbles.
2. The method of claim 1, wherein the micro-nano bubble-containing liquid is,
The Reynolds number Re of the high Reynolds number turbulence formed in the negative pressure zone of the venturi is more than or equal to 10000.
3.A device for generating liquid containing micro-nano bubbles is characterized in that,
Comprises a liquid inlet cylinder (100), a gas inlet cylinder (200), a liquid outlet cylinder (300) and a core rod assembly (400) which are sequentially arranged,
The liquid inlet cylinder (100), the air inlet cylinder (200), the liquid outlet cylinder (300) and the core rod assembly (400) are coaxially arranged, and the liquid inlet cylinder (100), the air inlet cylinder (200) and the liquid outlet cylinder (300) are connected into an integral structure through the core rod assembly (400);
The liquid inlet end of the core rod assembly (400) is used as the liquid inlet end of the venturi and limited in the liquid inlet cylinder (100), the liquid outlet end of the core rod assembly (400) is used as the liquid outlet end of the venturi and limited in the liquid outlet cylinder (300), and the protruding part of the middle section of the core rod assembly (400) is correspondingly distributed with the air inlet cylinder (200) in the radial direction and forms a throat annular channel of the venturi;
The air inlet cylinder (200) adopts a micropore structure,
The liquid inlet cylinder (100) and the liquid outlet cylinder (300) are coated outside the air inlet cylinder (200) and are provided with a ventilation channel for communicating the air inlet cylinder (200) with the outside.
4. The apparatus for generating a micro-nano bubble-containing liquid according to claim 3, wherein,
The venturi throat diameter d m is designed according to the following formula:
Wherein Q is volume flow, v is fluid kinematic viscosity, R e is Reynolds number, and Reynolds number R e is more than or equal to 10000.
5. The apparatus for generating a micro-nano bubble-containing liquid according to claim 4, wherein,
The air inlet cylinder (200) is made of microporous ceramic, foam metal or metal sintered microporous filter material, the porosity of the material is less than or equal to 10 percent, and the maximum radial size of micropores is less than or equal to 2 mu m.
6. The apparatus for generating a micro-nano bubble-containing liquid according to claim 4, wherein,
The air inlet cylinder (200) comprises an inner liner layer, a middle microporous layer and an outer framework layer,
The lining layer is a metal grid supporting layer or a ceramic grid supporting layer, the middle microporous layer is a microporous filter membrane layer, and the outer framework layer is a metal framework or a ceramic framework;
the microporous filter membrane layer has a microporous maximum radial dimension of less than or equal to 2 μm.
7. The apparatus for generating a micro-nano bubble-containing liquid according to any one of claim 3 to 6, wherein,
A protective sleeve (500) is also arranged outside the air inlet cylinder (200) in a ring way,
The protective sleeve (500) and the air inlet cylinder (200) are distributed at intervals, a buffer air inlet chamber (600) is formed between the protective sleeve (500) and the air inlet cylinder (200),
The protective sleeve (500) is provided with at least one air inlet hole (501).
8. The apparatus for generating a micro-nano bubble-containing liquid according to claim 7, wherein,
The air inlet hole (501) is connected with an air inlet nozzle, a one-way air inlet valve or an air generator.
9. The apparatus for generating a micro-nano bubble-containing liquid according to claim 7, wherein,
A plurality of groups of air inlet holes (501) are axially and/or circumferentially distributed on the protective sleeve (500),
The same group of air inlet holes (501) are arranged in parallel with each other and have the same hole shape and aperture,
The different sets of air intake holes (501) differ in at least one of hole orientation, hole shape, or aperture.
10. The apparatus for generating a micro-nano bubble-containing liquid according to claim 9, wherein,
The protective sleeve (500) is arranged between the liquid inlet cylinder (100) and the liquid outlet cylinder (300) in a sliding way along the axial direction and/or the circumferential direction,
The number of air inlets (501) communicated with the outside and/or the type of the air inlets (501) are controlled by matching the protective sleeve (500) with the holes between the liquid inlet cylinder (100) and/or the liquid outlet cylinder (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410240501.0A CN118203967A (en) | 2024-03-04 | 2024-03-04 | Device and method for generating micro-nano bubble-containing liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410240501.0A CN118203967A (en) | 2024-03-04 | 2024-03-04 | Device and method for generating micro-nano bubble-containing liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118203967A true CN118203967A (en) | 2024-06-18 |
Family
ID=91445735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410240501.0A Pending CN118203967A (en) | 2024-03-04 | 2024-03-04 | Device and method for generating micro-nano bubble-containing liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118203967A (en) |
-
2024
- 2024-03-04 CN CN202410240501.0A patent/CN118203967A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107744732B (en) | Tubular micro-bubble generator | |
| CN205850620U (en) | Microbubble generator | |
| CN108704504A (en) | Venturi microbubble generator and its application in catalytic ozonation | |
| US20020153621A1 (en) | Device and method for fluid aeration via gas forced through a liquid within an orifice of a pressure chamber | |
| US20130099398A1 (en) | Microbubble-generating apparatus | |
| CN206701176U (en) | A kind of micro-nano air bubble apparatus of ultrasonic wave | |
| KR101865240B1 (en) | Device for generating bubble | |
| CN108671779B (en) | A kind of fine gas bubbles generator | |
| AU2008221603A1 (en) | Procedure and device of high efficiency for the generation of drops and bubbles | |
| CN112535988A (en) | Micro-nano bubble preparation device and preparation method thereof | |
| WO2018148305A1 (en) | Improved venturi apparatus and method of use | |
| JP5143942B2 (en) | Refinement mixing equipment | |
| WO2011121631A1 (en) | Gas-liquid supply device | |
| CN118203967A (en) | Device and method for generating micro-nano bubble-containing liquid | |
| JP3086252B2 (en) | Formation of gas particles | |
| US20180162757A1 (en) | Venturi apparatus and method of use | |
| CN110898698A (en) | Microbubble generator and gas-liquid reactor comprising same | |
| CN211659736U (en) | Microbubble generating device and bubble segmentation component | |
| CN208727215U (en) | Venturi microbubble generator | |
| CN209205082U (en) | A kind of self-priming micro-nano Liqiud-gas mixing device with agitating function | |
| JP2010022927A (en) | Miniaturizing-mixing device | |
| CN211025862U (en) | Micro-bubble generator and micro-bubble generating device | |
| CN211864584U (en) | Micro-power gas-liquid or liquid-liquid mixed nano-scale fluid generator | |
| CN211800086U (en) | Micro-nano bubble generator with composite cutting function | |
| CN111151150A (en) | Micro-power gas-liquid or liquid-liquid mixed nano-scale fluid generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |