CN107228090A - A kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means and Hydrodynamic cavitation process - Google Patents
A kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means and Hydrodynamic cavitation process Download PDFInfo
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- CN107228090A CN107228090A CN201710641489.4A CN201710641489A CN107228090A CN 107228090 A CN107228090 A CN 107228090A CN 201710641489 A CN201710641489 A CN 201710641489A CN 107228090 A CN107228090 A CN 107228090A
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- liquid
- hydrodynamic cavitation
- generating means
- casing
- rotary vane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/181—Axial flow rotors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/185—Rotors consisting of a plurality of wheels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means and Hydrodynamic cavitation process, including casing and cavitation mechanism, the casing is used to accommodate liquid, its front side bottom sets liquid-inlet, rear side top sets liquid outlet, and described liquid-inlet and liquid outlet is separately positioned on the cornerwise two ends of casing；The cavitation mechanism, including rotating shaft and multiple impellers, the rotating shaft, are installed on center in casing, are driven by external motor；The impeller, is coaxially installed in rotating shaft, is constituted by multiple blades, and the through hole run through is evenly equipped with the blade.The present invention has energy consumption low, the advantages of cavitation efficiency high.
Description
Technical field
The present invention relates to chemical industry fluid technique field, more particularly to a kind of Multi-impeller rotary vane Hydrodynamic cavitation occurs
Device and Hydrodynamic cavitation process.
Background technology
When cavitation refers to that local pressure declines in liquid, the formation of gas cavities, hair on liquid internal or the solid interface of liquid
The process opened up and crumbled and fall.When fluid pressure is down to Liquid saturated vapor or even is following, produced due to the violent vaporization of liquid
Raw a large amount of cavitation bubbles.Cavitation bubble is with liquid flow board expansion, growth.When fluid pressure recovers, cavitation bubble moment crumbles and fall to form micro-
Jet and shock wave, produce moment localized hyperthermia (1000~5000K) and instantaneous pressure (1~5 × 107Pa).Cavitation can cause
Hydraulic mechanical equipment hydraulic performance decline, causes vibration, noise and cavitation erosion etc., but the energy of cavitation phenomenon release can also be subject to
Utilize, to realize the reinforcing to processes such as chemistry, physics, reach synergy, energy-conservation, consumption reduction and other effects.
The factor produced according to cavitation, is generally divided into acoustic cavitation, light cavitation, particle cavitation and the type of Hydrodynamic cavitation four.
The efficiency and the complexity of engineer applied produced due to cavitation, in four kinds of patterns, acoustic cavitation and Hydrodynamic cavitation be academia and
The focus of industrial quarters concern.At present, acoustic cavitation only obtains better effects in laboratory, but is applied to pilot scale or industrialization
When, it may appear that cavitation field is uneven, and cavitation efficiency declines, and flux is smaller, the problems such as amplification difficulty is larger.
For ultrasonic cavitation, Hydrodynamic cavitation equipment is simple, with low cost, can produce large-scale cavitation field, work
The potentiality of industryization application are very big, obtained in fields such as sterilizing, organic sewage wastewater treatment, jet flow cleaning and chemical separatings at present
To application.
Chinese patent 200410021098.5 discloses a kind of bactericidal unit that cavitation is produced by multi-hole orifice, utilizes sky
The instantaneous high-temperature high pressure produced when occurring is changed to carry out sterilization to liquid charging stock, the device has big yield, efficiency high, behaviour
The features such as making convenience, instantaneously sterilising, localized hyperthermia, integral normal temperature, thus avoid in liquid charging stock the destruction of active ingredient with
Cross thermal decomposition.Chinese patent 200410066214.5 discloses a kind of technical field of chemical separation convolution cavitation device that is used for can be
Relatively low temperature and be not added with or less plus under conditions of chemical demulsifier it is low to being carried out containing water-emulsified oil or emulsified oily watewater
Cost and efficient demulsification processing.Chinese patent 201120568210.2 discloses a kind of waterpower sky handled for stain disease
Makeup is put, and the device possesses multiple cavitation cavities, cavitation efficiency high.And ozone can be introduced to cavitation chamber, ozone is in Hydrodynamic cavitation
Under high-temperature and high-pressure conditions produced by effect, the hydroxyl radical free radical with more strong oxidizing property can be resolved into, is further increased
Cavitation efficiency.Catalyst TiO also can be set in the device2With γ Al2O3, more hydroxyl radical free radicals are produced, further reinforcing is dirty
The removal effect of useless Organic substance in water.
Although the research to Hydrodynamic cavitation is gradually goed deep into, the cavitation device structure type proposed increases, Hydrodynamic cavitation
Cavitation intensity it is smaller, it is less efficient, be often not enough to play the triggering or invigoration effect of some physical-chemical reactions.In addition,
Cavitation reactor treating capacity is smaller, needs many table apparatus to be used in parallel or in series during extensive processing, causes processing system pipeline
Huge structure, complexity, are still difficult to industrial application.
The content of the invention
In view of the technical drawbacks of the prior art, it is an object of the present invention to provide a kind of Multi-impeller rotary vane
Hydrodynamic cavitation generating means and Hydrodynamic cavitation process.
To realize that the technical scheme that the purpose of the present invention is used is：
A kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means, including：
Casing, for accommodating liquid, its front side bottom sets liquid-inlet, and rear side top sets liquid outlet, described
Liquid-inlet and liquid outlet be separately positioned on the cornerwise two ends of casing；
Cavitation mechanism, including,
Rotating shaft, is installed on center in casing, is driven by external motor；
Multiple impellers, are coaxially installed in rotating shaft, are constituted by multiple blades, and run through logical is evenly equipped with the blade
Hole.
It is preferred that, the number of the blade is no less than three.
It is preferred that, the through hole is uniformly distributed on blade, and spread pattern is equilateral triangle, corner equilateral triangle, pros
Shape or corner square.
It is preferred that, the two ends of the through hole are provided with expanding structure.
It is preferred that, the blade is that tabular is curved.
It is preferred that, reaming angle is 10 °~50 °.
It is preferred that, the direction of rotation of adjacent fan-wheel is opposite
It is preferred that, the liquid-inlet and the liquid outlet are pipe, and diameter parallel.
It is preferred that, the rotating shaft and liquid-inlet and liquid outlet diameter parallel.
It is preferred that, the casing is cavity rectangular parallelepiped structure, and the blade height is the 0.2-0.4 of box height, described
Width of blade is the 0.6-0.9 of casing width.
It is preferred that, the casing is cavity cylinder, and the width of blade is the 0.6-0.9 of cylinder width, the leaf
Piece is highly the 0.2-0.4 of cylinder diameter.
On the other hand, the Hydrodynamic cavitation process of the Multi-impeller rotary vane Hydrodynamic cavitation generating means, including following
Step：
(1) liquid enters casing from inlet flow；
(2) relative motion between blade and liquid, through hole is cut to liquid；
(3) liquid at high speed is by through hole, and cross section of fluid channel product diminishes, and water velocity increase, water flow pressure reduces, and pressure is down to
Below the saturated vapor pressure of water, occur cavitation formation vacuole, then vacuole comes back to main body of liquid as current flow out through hole,
Hydraulic pressure is raised, bubble collapse, is formed shock wave and microjet along with the moment of bubble collapse, is produced HTHP；
(4) liquid flows out casing from liquid outlet.
It is preferred that, in the step (2), during liquid flow via through holes, the reaming of porch is first passed through, current and orifice plate is reduced
Energy loss caused by collision, by the reaming in exit during outflow through hole, bubble collapse is more abundant.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, present device is simple in construction, and processing flux is big, and device fabrication is with low cost, cavitation efficiency high, it is adaptable to work
Industry large-scale application.
2nd, due to larger processing flux, the peace of parallel pipeline can be reduced using the water treatment system of the present apparatus
Dress, reduces the scale and complexity of pipe-line system, reduces floor space, reduces input cost.
3rd, various ways are throttled and sheared using through hole and induce cavitation, can produce substantial amounts of vacuole cloud, vacuole is transported
Property it is strong, and energy consumption is low, cavitation efficiency high, and liquid flow flux is big, can large-scale promotion use.
4th, the Hydrodynamic cavitation generating means can be by controlling flow and wheel speed to control extent of cavitation, can be according to reality
Demand obtains different degrees of cavitation effect, substantially increases the controllability of the equipment of Hydrodynamic Cavitation.
Brief description of the drawings
Fig. 1 show cavitation apparatus schematic diagram.
Fig. 2 show cavitation apparatus schematic elevation view.
Fig. 3 show vane profile figure.
Fig. 4 show impeller elevation cross-sectional view.
Fig. 5 show impeller side regarding part sectioned view.
Fig. 6 show arrays of openings schematic diagram.
Wherein：1- liquid-inlets, 2- casings, 3- impellers, 4- rotating shafts, 5- liquid outlets, 6- through holes
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment only to explain the present invention, be not intended to limit the present invention.
A kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means, including：
Casing 2, for accommodating liquid, its front side bottom sets liquid-inlet 1, and rear side top sets liquid outlet 5, institute
The liquid-inlet 1 and liquid outlet 5 stated are separately positioned on the cornerwise two ends of casing；
Cavitation mechanism, including,
Rotating shaft 4, is installed on center in casing 2, is driven by external motor；
Multiple impellers 3, are coaxially installed in rotating shaft 4, are constituted by multiple blades, are evenly equipped with what is run through on the blade
Through hole 6.
Sealed between rotating shaft 4 and casing 2, liquid to be treated be full of in casing 2, impeller 3 is located in hydraulically full casing 2,
External motor drive shaft 4 and the common high-speed rotation of impeller 3, while rotation, liquid is from the inflow device of liquid-inlet 1, by impeller 3
Drive and rotate therewith flowing.
There is relative motion between blade 7 and liquid, liquid is cut by through hole 6.The two ends of through hole 6 set reaming
Structure, so when versus high motion between blade 7 and liquid, liquid at high speed is diminished by through hole 6, cross section of fluid channel product, current
Speed increase, water flow pressure reduces, and when pressure is down to below the saturated vapor pressure of water, occurs cavitation formation vacuole, then vacuole
As current outflow through hole 6 comes back to main body of liquid, hydraulic pressure rise, bubble collapse is formed along with the moment of bubble collapse
Shock wave and microjet, produce HTHP.
, can be by increasing the size of casing 2 when liquid handling amount is larger, the increase quantity of impeller 3 is to improve equipment
Disposal ability.Multiple rotating shafts 4 and the fit structure of impeller 3 can be installed, different impellers can rotate in same direction, can also in casing 2
Rotate backward, the direction of rotation of adjacent fan-wheel should be conducive to increase cavitation strong preferentially from reverse, to improve liquid turbulence intensity
Degree.
Preferred scheme, the number of the blade is no less than three, and the blade is that tabular is curved.Certain
In the range of, blade sets more, and cavitation effect is also better.Liquid is under the cutting repeatedly of multiple blades 7 of impeller 3, constantly
By through hole 6, repeatedly occurs cavitation effect.
Preferred scheme, if casing is cavity rectangular parallelepiped structure, the blade height is the 0.2-0.4 of box height,
The width of blade is the 0.6-0.9 of casing width.If the casing is cavity cylinder, the width of blade is that cylinder is wide
The 0.6-0.9 of degree, the blade height is the 0.2-0.4 of cylinder diameter.In this interval range, Hydrodynamic cavitation effect is most
It is good.The casing of cavity cylinder is without dead angle, and cavitation effect is more excellent.
Preferred scheme, the through hole is uniformly distributed on blade, and spread pattern is equilateral triangle, the positive triangle of corner
Shape, square or corner square, these arrangement modes can all realize good cavitation.The two ends of the through hole are provided with reaming knot
Structure.Reaming angle is 10 °~50 °.In the porch of through hole 6 because of reaming, reduce current and damaged with energy caused by orifice plate collision
Lose；Reaming is set in the outlet in hole, makes bubble collapse more abundant, the cavitation effect of the cavitation plate with expanding structure is more preferable,
Cavitation intensity is higher, cavitation efficiency is also higher.
Preferred scheme, the liquid-inlet 1 and the liquid outlet 5 are pipe, and diameter parallel, described turn
Axle 4 and liquid-inlet 1 and the diameter parallel of liquid outlet 5.The mode be arrangeding in parallel, may be such that liquid more unobstructed inflow or stream
Go out casing 2.
On the other hand, the Hydrodynamic cavitation process of the rotary vane Hydrodynamic cavitation generating means of Multi-impeller 3, including following
Step：
(1) liquid enters casing 2 from inlet flow；
(2) relative motion between blade and liquid, through hole is cut to liquid；
(3) liquid at high speed is by through hole, and cross section of fluid channel product diminishes, and water velocity increase, water flow pressure reduces, and pressure is down to
Below the saturated vapor pressure of water, occur cavitation formation vacuole, then vacuole comes back to main body of liquid as current flow out through hole,
Hydraulic pressure is raised, bubble collapse, is formed shock wave and microjet along with the moment of bubble collapse, is produced HTHP；
(4) liquid flows out casing 2 from liquid outlet 5.
In preferred scheme, the step (2), during liquid flow via through holes, the reaming of porch is first passed through, current are reduced
With energy loss caused by orifice plate collision, by the reaming in exit during outflow through hole, bubble collapse is more abundant.
Described above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (12)
1. a kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means, it is characterised in that including：
Casing, for accommodating liquid, its front side bottom sets liquid-inlet, and rear side top sets liquid outlet, described liquid
Body import and liquid outlet are separately positioned on the cornerwise two ends of casing；
Cavitation mechanism, including,
Rotating shaft, is installed on center in casing, is driven by external motor；
Multiple impellers, are coaxially installed in rotating shaft, are constituted by multiple blades, and the through hole run through is evenly equipped with the blade.
2. a kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means according to claim 1, it is characterised in that described
The number of blade is no less than three.
3. a kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means according to claim 1, it is characterised in that described
Spread pattern of the through hole on blade is equilateral triangle, corner equilateral triangle, square or corner square.
4. a kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means according to claim 1, it is characterised in that described
The two ends of through hole are provided with expanding structure.
5. a kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means according to claim 1, it is characterised in that described
Blade is tabular or curved.
6. a kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means according to claim 1, it is characterised in that adjacent
The direction of rotation of impeller is opposite.
7. a kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means according to claim 1, it is characterised in that described
Liquid-inlet and the liquid outlet are pipe, and diameter parallel.
8. a kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means according to claim 1, it is characterised in that described
Rotating shaft and liquid-inlet and liquid outlet diameter parallel.
9. a kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means according to claim 1, it is characterised in that casing
For cavity rectangular parallelepiped structure, the blade height is the 0.2-0.4 of box height, and the width of blade is the 0.6- of casing width
0.9。
10. a kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means according to claim 1, it is characterised in that institute
It is cavity cylinder to state casing, and the width of blade is the 0.6-0.9 of cylinder width, and the blade height is cylinder diameter
0.2-0.4.
11. the Hydrodynamic cavitation process of Multi-impeller rotary vane Hydrodynamic cavitation generating means as claimed in claim 1, including with
Lower step：
(1) liquid enters casing from inlet flow；
(2) relative motion between blade and liquid, through hole is cut to liquid；
(3) liquid at high speed is by through hole, and cross section of fluid channel product diminishes, and water velocity increase, water flow pressure reduces, and pressure is down to water
Below saturated vapor pressure, occurs cavitation formation vacuole, then vacuole comes back to main body of liquid, hydraulic pressure as current flow out through hole
Rise, bubble collapse forms shock wave and microjet along with the moment of bubble collapse, produces HTHP；
(4) liquid flows out casing from liquid outlet.
12. Hydrodynamic cavitation process as claimed in claim 11, it is characterised in that：In the step (2), liquid flow via through holes
When, the reaming of porch is first passed through, current and energy loss caused by orifice plate collision are reduced, by exit during outflow through hole
Reaming, bubble collapse is more abundant.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641489.4A CN107228090A (en) | 2017-07-31 | 2017-07-31 | A kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means and Hydrodynamic cavitation process |
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| CN201710641489.4A CN107228090A (en) | 2017-07-31 | 2017-07-31 | A kind of Multi-impeller rotary vane Hydrodynamic cavitation generating means and Hydrodynamic cavitation process |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180147A (en) * | 2017-12-19 | 2018-06-19 | 刘英学 | A kind of unpowered Water Wave Pump |
| CN109199281A (en) * | 2018-09-03 | 2019-01-15 | 曹开军 | The cleaning apparatus for having Hydrodynamic cavitation mechanism |
| CN109628202A (en) * | 2018-12-31 | 2019-04-16 | 杭州路弘科技有限公司 | Effluent purifying device and method |
| CN112495592A (en) * | 2020-12-11 | 2021-03-16 | 山东大学 | Cavitation and foaming integrated tailing flotation device |
| CN112546989A (en) * | 2020-10-30 | 2021-03-26 | 清华大学 | Hydrodynamic cavitation strengthening equipment |
| CN112593440A (en) * | 2020-12-11 | 2021-04-02 | 山东大学 | Hydraulic ultrasonic cavitation device for cotton pulp bleaching |
| CN112726256A (en) * | 2020-12-11 | 2021-04-30 | 山东大学 | Cavitation device for refining production of reinforced cellulose pulp |
| CN112717746A (en) * | 2020-12-11 | 2021-04-30 | 山东大学 | Cavitation dispersion device for polymer electrolyte fuel cell catalyst slurry |
| CN113952882A (en) * | 2021-11-15 | 2022-01-21 | 大连海事大学 | Combined hydraulic cavitation device and cavitation generation method thereof |
| CN114837635A (en) * | 2022-04-29 | 2022-08-02 | 西南石油大学 | Underground double-turbine cavitation generating device |
| WO2022222565A1 (en) * | 2021-04-20 | 2022-10-27 | 中国石油大学(华东) | Hydrodynamic cavitation generation apparatus and method |
| CN109199281B (en) * | 2018-09-03 | 2024-06-07 | 曹开军 | Cleaning tool with hydrodynamic cavitation mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180147A (en) * | 2017-12-19 | 2018-06-19 | 刘英学 | A kind of unpowered Water Wave Pump |
| CN109199281A (en) * | 2018-09-03 | 2019-01-15 | 曹开军 | The cleaning apparatus for having Hydrodynamic cavitation mechanism |
| CN109199281B (en) * | 2018-09-03 | 2024-06-07 | 曹开军 | Cleaning tool with hydrodynamic cavitation mechanism |
| CN109628202A (en) * | 2018-12-31 | 2019-04-16 | 杭州路弘科技有限公司 | Effluent purifying device and method |
| CN112546989A (en) * | 2020-10-30 | 2021-03-26 | 清华大学 | Hydrodynamic cavitation strengthening equipment |
| CN112726256A (en) * | 2020-12-11 | 2021-04-30 | 山东大学 | Cavitation device for refining production of reinforced cellulose pulp |
| CN112593440A (en) * | 2020-12-11 | 2021-04-02 | 山东大学 | Hydraulic ultrasonic cavitation device for cotton pulp bleaching |
| CN112717746A (en) * | 2020-12-11 | 2021-04-30 | 山东大学 | Cavitation dispersion device for polymer electrolyte fuel cell catalyst slurry |
| CN112495592A (en) * | 2020-12-11 | 2021-03-16 | 山东大学 | Cavitation and foaming integrated tailing flotation device |
| WO2022222565A1 (en) * | 2021-04-20 | 2022-10-27 | 中国石油大学(华东) | Hydrodynamic cavitation generation apparatus and method |
| CN113952882A (en) * | 2021-11-15 | 2022-01-21 | 大连海事大学 | Combined hydraulic cavitation device and cavitation generation method thereof |
| CN113952882B (en) * | 2021-11-15 | 2024-03-12 | 大连海事大学 | Combined hydrodynamic cavitation device and cavitation generation method thereof |
| CN114837635A (en) * | 2022-04-29 | 2022-08-02 | 西南石油大学 | Underground double-turbine cavitation generating device |
| CN114837635B (en) * | 2022-04-29 | 2023-06-02 | 西南石油大学 | Underground double-turbine cavitation generating device |
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