CN109157993A - A kind of micro-nano bubble generator and production method - Google Patents
A kind of micro-nano bubble generator and production method Download PDFInfo
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- CN109157993A CN109157993A CN201810972839.XA CN201810972839A CN109157993A CN 109157993 A CN109157993 A CN 109157993A CN 201810972839 A CN201810972839 A CN 201810972839A CN 109157993 A CN109157993 A CN 109157993A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/2319—Methods of introducing gases into liquid media
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/2366—Parts; Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
- B01F23/2373—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media for obtaining fine bubbles, i.e. bubbles with a size below 100 µm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F2025/91—Direction of flow or arrangement of feed and discharge openings
- B01F2025/914—Tangential flow, i.e. flow spiraling in a tangential direction in a flat plane or belt-like area
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
Abstract
The present invention relates to a kind of micro-nano bubble generator and production methods, the micro-nano bubble generator includes main body and end cap, the end cap seal is set to main body top, air intake is provided on end cap, the main body has the inner cavity of inverted conical shape, side wall is provided with water inlet, and bottom is provided with water outlet, and the water inlet and main body inner wall are tangent.When work, by controlling pressure, injects water flow along main body inner wall tangential direction from water inlet, form eddy flow in inner cavity, while gas is passed through by air intake, gas generates bubble after mixing with water flow, is discharged with water flow by water outlet.The present invention is by improving micro-nano bubble generator structures, by eccentric and eddy flow combine in the way of, improve bubble/water mixing chance and intensity, and then bubble/water percent by volume greatly improved, bubble/water volume ratio can reach 40% or so, have a good application prospect.
Description
Technical field
The present invention relates to bubbles, and field occurs, and in particular to a kind of micro-nano bubble generator and production method.
Background technique
Sewage, dilute shape Treatment of Sludge and culture fishery in, in order to which oxidation processes are effectively performed or allow water body
It is oxygen-enriched, usually toward bubble of the conveying containing ozone or oxygen in water body.Traditional bubble diameter is about in several hundred microns to 1 millimeter of left side
The right side, under the action of buoyancy, the water body of 2 meters or so depth, bubble is only capable of retaining less than 10 seconds wherein.Therefore bubble is relied on
The efficiency of oxic process is very low, contains ozone bubbles especially in sewage treatment, because the efficiency of ozone production process itself is just
Very low, energy consumption is larger, and the ozone in most of bubble is not in time for also that oxidation occurs with water body just because bubble floating is discharged
Face ruptures and fails.In recent years, have it is a large amount of studies have shown that if the diameter of the bubble generated in the case where several microns,
Often occur two change directions, one is each bubble is combined due to collision, and then diameter becomes larger, and other direction be by
In the reason of surface tension bubble diameter is become smaller.It is thus formd in suitable water body " micro-nano bubble ", tests table
Bright, the retention time of micro-nano bubble increases considerably, and wherein diameter can retain number in the bubble of 100 rans in water body
Hour is even longer.
Have much about the device and method for generating micro-nano bubble at present, such as CN205868033U discloses a kind of nanometer
Air bubble generator, including jet port, axial flow blower, circulation, water pump and nano bubble system, the jet port are mounted on
The top of upper reactive tank, and detection mouth is provided on the right side of upper reactive tank, fluid column, and fluid column are provided with below the jet port
Left side be provided with oscillating bubble splitter, the nano bubble system is mounted on the lower section of reactive tank, and upper reactive tank
Lower section is provided with partition.CN107583480A discloses a kind of microbubble generator and preparation method thereof, the microbubble generator
Including pressure inlet, including the first water inlet and the first water outlet, the sectional area of first water outlet is less than first water inlet
The sectional area of mouth；The bubble that is connected to first water outlet generates pipe, including the second water inlet and the second water outlet, and described the
One water outlet is placed in second water inlet；Be opened in the inlet channel that the bubble generates pipe, the inlet channel also with
Outside air connection；And it is installed in the cutting net of second water outlet.CN2571736A discloses a kind of gas of improvement
Generator is steeped, mainly includes shaft and sleeve, the diameter of shaft is slightly less than the internal diameter of sleeve, and sets in shaft both ends with prominent
The fixed part stretched, central then be provided with a circumferential arcuation groove, shaft is placed on sleeve, and connecting rod is connected to opening for its fixed part and sleeve
Peristoma, shaft and sleeve form gap appropriate, when water flow is flowed through by gap, because of sinking for shaft drop-center, form moment
Extruding, to generate micro air bubble.
The micro-nano bubble generation device to circulate on the market at present is designed based on the principle of " venturi " effect mostly.
The effect shows restricted flow in the flow section by reducing, and the phenomenon that flow velocity increase, flow velocity and mistake occurs in fluid
Flow section is inversely proportional.This effect refers to can generate low pressure near swiftly flowing fluid, to generate suction-operated.Work as gas
Body and liquid flow inside Venturi tube, and at the most narrow place of pipeline, dynamic pressure (velocity head) reaches maximum value, static pressure
(Resting Pressure) reaches minimum value, and the speed of gas (liquid) rises because through flow cross section area reduces.Entirely shove all
Pipe reductions process is undergone within the same time, thus pressure also reduces in the same time.And then pressure difference is generated, this pressure
Power difference is for measuring or providing an external suction to fluid.
The features such as although the micro-nano bubble generator of Venturi tube-type spreader has structure simple, self-priming, bubble generation efficiency
Lower (two indices for measuring bubble generation efficiency are the percents by volume of exit number of bubbles and bubble and water), bubble/
The mixed volume ratio of water is about 10%-20%.Too low bubble/water volume ratio limits its further application and promotes.
Summary of the invention
In view of problems of the prior art, the purpose of the present invention is to provide a kind of micro-nano bubble generator and generations
Bubble generation efficiency greatly improved in method, and bubble/water volume ratio can reach 40% or so, before having good application
Scape.
To achieve this purpose, the present invention adopts the following technical scheme:
In a first aspect, the present invention provides a kind of micro-nano bubble generator, the micro-nano bubble generator includes main body and end
Lid, the end cap seal are set to main body top, and air intake is provided on end cap, and the main body has inverted conical shape inner cavity, side
Wall is provided with water inlet, and bottom is provided with water outlet, and the water inlet and main body inner wall are tangent.
Preferably, the micro-nano bubble generator is equipped with the first plane by main center's axis, first plane
It is parallel to the central axis of the water inlet, the air intake is located at first plane close to the side of water inlet.
Preferably, it is provided with groove on the end cap and places O-ring, to be sealed to entire conical cavity.
Preferably, the water inlet is set to main body by proximal cover side.
Preferably, the air intake eccentric setting on end cap, mix by bubble/water-volume with raising in water outlet
Composition and division in a proportion.The distance of the bias, i.e. air intake central axis are at a distance from main center's axis, with the inner cavity maximum gauge
Ratio is 0.3-0.4, for example, can be 0.3,0.31,0.32,0.33,0.34,0.35,0.36,0.37,0.38,0.39 or
Specific point value between 0.4 and above-mentioned numerical value, as space is limited and for concise consideration, the present invention no longer exclusive list.
Preferably, the taper of the inner cavity is 15-30 °, such as can be 15 °, 18 °, 20 °, 23 °, 25 °, 28 ° or 30 °,
And the specific point value between above-mentioned numerical value, as space is limited and for concise consideration, the present invention no longer exclusive list.
The dimensional parameters of present invention component each for described device are defined below:
The height for defining inner cavity is L, and air intake diameter is D1, inner cavity maximum gauge is D2, the diameter of water outlet is D3,
Preferably, above-mentioned parameter meets following relationship:
D3/D2=0.05-0.12, L/D2=1.5-2.5
Preferably, the size of above-mentioned parameter is (unit: mm) as shown in table 1:
Table 1
| D1 | D2 | D3 | L |
| 0.3–1.2 | 10–50 | 1.5–4.0 | 12-120 |
Second aspect, the present invention provide a kind of production method of micro-nano bubble, are generated using device described in first aspect
Micro-nano bubble, the method are as follows: control pressure is injected water flow along main body inner wall tangential direction from water inlet, formed in inner cavity
Eddy flow, while gas is passed through by air intake, gas generates bubble after mixing with water flow, is discharged with water flow by water outlet.
In the present invention, water flow after the injection of main body inner wall tangential direction, is formed in the tube eddy flow, the water of rotation from water inlet
For stream because centrifugal action is in conical internal cavity center formation pressure relative small area, the gas being passed through will be abundant with water in this area
It mixes and compresses, be finally discharged together with water from the water outlet of lower end.
In addition, the position where air inlet is not or not the center of end cap, but with certain bias, such design can
Bubble/water volume the mixing ratio gone out in water outlet is significantly increased.
Preferably, the pressure for being passed through water flow be 0.15-0.25MPa, such as can be 0.15MPa, 0.16MPa,
0.17MPa, 0.18MPa, 0.19MPa, 0.20MPa, 0.21MPa, 0.22MPa, 0.23MPa, 0.24MPa or 0.25MPa, and
Specific point value between above-mentioned numerical value, as space is limited and for concise consideration, the present invention no longer exclusive list.
Preferably, the mode for being passed through gas is self-priming or pressurization, when being passed through gas by the way of pressurization, pressure
Lower than the pressure 0.05-0.075MPa for being passed through water flow.
Compared with prior art, the present invention is at least had the advantages that
The present invention by being improved to micro-nano bubble generator structures, by eccentric and eddy flow combine in the way of, mention
High bubble/water mixing chance and intensity, and then bubble/water percent by volume greatly improved, bubble/water volume ratio
40% or so can be reached.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the micro-nano bubble generator provided in the embodiment of the present invention 1；
Fig. 2 is the external structure schematic diagram of the micro-nano bubble generator provided in the embodiment of the present invention 1；
Fig. 3 is the schematic cross-section of the micro-nano bubble generator provided in the embodiment of the present invention 1；
In figure: 1- main body, 2- end cap, 3- air inlet, 4 water inlets, 5- water outlet.
The present invention is described in more detail below.But following examples is only simple example of the invention, not generation
Table or limitation the scope of the present invention, protection scope of the present invention are subject to claims.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
The present invention provides a kind of micro-nano bubble generator, the micro-nano bubble generator packet in specific embodiment part
Main body and end cap are included, the end cap seal is set to main body top, and air intake is provided on end cap, and the main body has inverted cone
Shape inner cavity, side wall are provided with water inlet, and bottom is provided with water outlet, and the water inlet and main body inner wall are tangent.
Preferably, the micro-nano bubble generator is equipped with the first plane by main center's axis, first plane
It is parallel to the central axis of the water inlet, the air intake is located at first plane close to the side of water inlet.
Preferably, it is provided with groove on the end cap and places O-ring.
Preferably, the water inlet is set to main body by proximal cover side.
Preferably, the air intake eccentric setting is on end cap.
Preferably, the air intake central axis at a distance from main center's axis with the ratio of the inner cavity maximum gauge
For 0.3-0.4.
Preferably, the taper of the inner cavity is 15-30 °.
The present invention additionally provides a kind of production method of micro-nano bubble in specific embodiment part, uses above-mentioned micro-nano gas
It steeps generator and generates micro-nano bubble, the method are as follows: control pressure penetrates water flow along main body inner wall tangential direction from water inlet
Enter, forms eddy flow in inner cavity, while gas is passed through by air intake, gas generates bubble after mixing with water flow, with water flow by being discharged
Mouth discharge.
Preferably, the pressure for being passed through water flow is 0.15-0.25MPa.
Preferably, the mode for being passed through gas is self-priming or pressurization.
Preferably, the pressure when pressurization is passed through gas is lower than the pressure 0.05-0.075MPa for being passed through water flow.
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, of the invention is typical but non-limiting
Embodiment is as follows:
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, a kind of micro-nano bubble generator is present embodiments provided, the micro-nano bubble generates
Device includes main body 1 and end cap 2, and groove is provided on the end cap 2 and places O-ring, is sealed at 1 top of main body, on end cap 2 partially
The heart is provided with air intake 3, and the main body 1 has the inner cavity of inverted conical shape, and 1 side wall of main body is provided with water inlet 4, and bottom is provided with
Water outlet 5, the water inlet 4 and 1 inner wall of main body are tangent；The micro-nano bubble generator is equipped with by 1 central axis of main body
First plane, first plane are parallel to the central axis of the water inlet 4, and the air intake 3 is located at first plane
Close to the side of water inlet.
Further, in the present embodiment each component size are as follows: air intake diameter 1.2mm, eccentric distance 13.5mm enter water
Mouth diameter 3mm, water outlet diameter 3.2mm, the high 51mm of body lumen, inner cavity maximum gauge 40mm, the taper of inner cavity is 19.8 °.
Embodiment 2
A kind of micro-nano bubble production method is present embodiments provided, the micro-nano bubble generator provided in embodiment 1 is provided
Prepare micro-nano bubble, the method are as follows: control pressure is 0.2MPa, penetrates water flow along 1 inner wall tangential direction of main body from water inlet 4
Enter, forms eddy flow in inner cavity, while controlling pressure and gas is passed through by air intake 3 for 0.15MPa, gas fills in the lumen with water flow
Bubble is generated after dividing mixing, is discharged with water flow by water outlet 5.
After testing, bubble in liquid/water volumetric mixture ratio of discharge is about 39%.
Embodiment 3
A kind of micro-nano bubble production method is present embodiments provided, the micro-nano bubble generator provided in embodiment 1 is provided
Prepare micro-nano bubble, the method are as follows: control pressure is 0.25MPa, makes water flow from water inlet 4 along 1 inner wall tangential direction of main body
It injects, forms eddy flow in inner cavity, open simultaneously air intake 3, gas is passed through in the way of self-priming, gas and water flow are in the lumen
Bubble is generated after being sufficiently mixed, and is discharged with water flow by water outlet 5.
After testing, bubble in liquid/water volumetric mixture ratio of discharge is 38%.
Comparative example 1
Compared with Example 1, the micro-nano bubble generator that this comparative example provides is in addition to air intake 3 is set in end cap 2
The heart is outer (i.e. eccentric distance is 0mm), and other parts are identical with embodiment 1.
Micro-nano bubble is prepared using the device that this comparative example provides, preparation method is identical with embodiment 2.
After testing, bubble in liquid/water volumetric mixture ratio of discharge is 29%.
The Applicant declares that the present invention is explained by the above embodiments detailed construction feature of the invention, but the present invention is simultaneously
It is not limited to above-mentioned detailed construction feature, that is, does not mean that the present invention must rely on above-mentioned detailed construction feature and could implement.Institute
Belong to those skilled in the art it will be clearly understood that any improvement in the present invention, to the equivalence replacement of component selected by the present invention
And increase, selection of concrete mode of accessory etc., all of which fall within the scope of protection and disclosure of the present invention.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of micro-nano bubble generator, which is characterized in that the micro-nano bubble generator includes main body and end cap, the end cap
Be sealed at main body top, be provided with air intake on end cap, the main body has an inner cavity of inverted conical shape, side wall be provided with into
The mouth of a river, bottom are provided with water outlet, and the water inlet and main body inner wall are tangent.
2. micro-nano bubble generator as described in claim 1, which is characterized in that the micro-nano bubble generator is equipped with by master
First plane of body central axis, first plane are parallel to the central axis of the water inlet, and the air intake is located at institute
The first plane is stated close to the side of water inlet.
3. micro-nano bubble generator as claimed in claim 1 or 2, which is characterized in that be provided with groove on the end cap and place O shape
Circle.
4. the method according to claim 1, which is characterized in that the water inlet is set to main body by proximal cover one
Side.
5. method according to any of claims 1-4, which is characterized in that the air intake eccentric setting is on end cap；
Preferably, ratio of the air intake central axis at a distance from main center's axis with the inner cavity maximum gauge is
0.3-0.4。
6. the method according to claim 1 to 5, which is characterized in that the taper of the inner cavity is 15-30 °.
7. a kind of production method of micro-nano bubble, which is characterized in that use micro-nano bubble as claimed in any one of claims 1 to 6
Generator generates micro-nano bubble, the method are as follows: and control pressure injects water flow along main body inner wall tangential direction from water inlet,
Eddy flow is formed in inner cavity, while gas is passed through by air intake, gas generates bubble after mixing with water flow, is arranged with water flow by water outlet
Out.
8. the method for claim 7, which is characterized in that the pressure for being passed through water flow is 0.15-0.25MPa.
9. the method for claim 7, which is characterized in that the mode for being passed through gas is self-priming or pressurization.
10. method as claimed in claim 9, which is characterized in that the pressure when pressurization is passed through gas, which is lower than, is passed through water flow
Pressure 0.05-0.075MPa.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810972839.XA CN109157993B (en) | 2018-08-24 | 2018-08-24 | Micro-nano bubble generator and generation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810972839.XA CN109157993B (en) | 2018-08-24 | 2018-08-24 | Micro-nano bubble generator and generation method |
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| Publication Number | Publication Date |
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| CN109157993A true CN109157993A (en) | 2019-01-08 |
| CN109157993B CN109157993B (en) | 2021-05-18 |
Family
ID=64896700
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| CN201810972839.XA Active CN109157993B (en) | 2018-08-24 | 2018-08-24 | Micro-nano bubble generator and generation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813567A (en) * | 2019-06-06 | 2020-02-21 | 南京擅水科技有限公司 | Nano bubble shower nozzle |
| CN113477111A (en) * | 2021-07-27 | 2021-10-08 | 微纳气泡(浙江)智能科技有限公司 | Gas dissolving device for pushing and pressurizing from inside to outside and using method |
| CN113716644A (en) * | 2021-08-19 | 2021-11-30 | 浙江一龙环保科技有限公司 | Bubble cutter and method for preparing nano bubbles |
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| CN113716644A (en) * | 2021-08-19 | 2021-11-30 | 浙江一龙环保科技有限公司 | Bubble cutter and method for preparing nano bubbles |
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| Publication number | Publication date |
|---|---|
| CN109157993B (en) | 2021-05-18 |
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