CN104528846A - Hydrodynamic cavitation device for increasing cavitation free radical concentration - Google Patents
Hydrodynamic cavitation device for increasing cavitation free radical concentration Download PDFInfo
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- CN104528846A CN104528846A CN201410850395.4A CN201410850395A CN104528846A CN 104528846 A CN104528846 A CN 104528846A CN 201410850395 A CN201410850395 A CN 201410850395A CN 104528846 A CN104528846 A CN 104528846A
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- 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
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Abstract
The invention relates to a hydrodynamic cavitation device for increasing the cavitation free radical concentration. The hydrodynamic cavitation device comprises a hydrodynamic cavitation cavity. A convergence type spraying nozzle is arranged at the water inlet of the hydrodynamic cavitation cavity. A flow blocking body and an adjusting plate are arranged in the hydrodynamic cavitation cavity. The flow blocking body is a rotating body, wherein the rotating body is formed when a closed curve formed by connecting a curve 1, a curve 2 and a curve 3 end to end in the clockwise direction rotates around a central shaft of the hydrodynamic cavitation cavity by one circle. High-pressure water flow is blocked to form high-pressure jet flow in the hydrodynamic cavitation cavity so that cavitation bubbles can be formed, the cavitation bubbles waver to a high-pressure area according to the effect that a flow body flows along a wall, the cavitation bubbles crack when blocked by the inner wall and the adjusting plate in the high-pressure area, a lot of free radicals are generated, and therefore the capacity of degrading organic pollutants through hydrodynamic cavitation is effectively improved, and the aim of improving and enhancing the cavitation waste water treatment effect is achieved; the hydrodynamic cavitation device is simple in structure, high in efficiency, convenient to operate, easy to manage, low in cost and suitable for industrial application.
Description
Technical field
The invention belongs to fluid liquid cavitation generating unit studying technological domain, particularly relate to a kind of equipment of Hydrodynamic Cavitation utilizing the increase cavitation number of free radical of Hydrodynamic cavitation degradation treatment organic pollutant wastewater.
Technical background
" China Environmental State Bulletin " issued according to environment protection general bureau claims, and to the water quality assessment that nearly 140,000 kilometers of rivers, the whole nation carry out, result shows that the river of nearly 40% receives severe contamination; In the seven great river River system of the whole nation, bad V class water quality accounts for 41%.And another important investigation that Environmental Protection Administration issues shows, and is being flowed through in the river in city by 131, the China added up, severe contamination have 36, serious pollution have 21, intermediate pollution have 38.
Due to the pollution of water body, cause many water resourcess to recycle, thus increased the weight of the deficient degree of water resources, have impact on the sustainable use of environment and economic Sustainable development.Therefore, seek that new Method and Technology is large to flow, pollutent is many and the industry of complicated component again, agricultural pollution waste water carry out effectively, advanced treatment, the recycling for water resources is created conditions.
Physical method carries out water treatment, owing to not producing secondary pollution, is called as " Green Water process ", receives and pay close attention to widely.Cavitation method wherein, because cheapness can collecting high temperature, high pressure, mechanical shearing simply and be broken for one, carries out organic pollutant degradation for physical method and water body purification process creates special form.
Venturi tube is one of representative of early stage waterpower cavitation generator, it appear as cavitation purify waste water process bring new method.But the application of traditional Venturi tube in sewage disposal is very limited, most important performance is: it is very few that free radical generates quantity, especially the generation number of hydroxyl radical free radical is very few, cause the effect processing organic pollutant undesirable, therefore this method of disposing of sewage never widely uses in Practical Project.
Summary of the invention
In order to the technological deficiency existing for conventional hydraulic cavitation effectively can be overcome, the invention provides one can make fluid generate a large amount of free radical, the ability of effective raising Hydrodynamic cavitation degradable organic pollutant, and easy to operate, be easy to management, the equipment of Hydrodynamic Cavitation that cost is low, technical pattern simply increases cavitation number of free radical.
The technical solution adopted in the present invention comprises Hydrodynamic cavitation chamber, the side water-in in Hydrodynamic cavitation chamber is provided with convergence type nozzle, the internal diameter in Hydrodynamic cavitation chamber is greater than nozzle water side internal diameter, make convergence type nozzle and Hydrodynamic cavitation chamber form one-level venturi-type structure, bottom the other end relative with feed-water end on Hydrodynamic cavitation chamber, be processed with water outlet; The inside in Hydrodynamic cavitation chamber is provided with bluff body and adjustable plate, and bluff body and adjustable plate are fixed by fixed link spaced apart and Hydrodynamic cavitation cavity wall;
Above-mentioned bluff body to be rotated a circle formed rotator around the central shaft in Hydrodynamic cavitation chamber according to the end to end closed curve of clockwise direction by curve 1 and curve 2, curve 3, forms secondary venturi-type passage with the inwall in Hydrodynamic cavitation chamber;
With the intersection point of the water-in end face in Hydrodynamic cavitation chamber and central shaft for true origin, central shaft is x-axis, and the vertical medullary ray that the water-in end face in Hydrodynamic cavitation chamber intersects vertically with x-axis is y-axis, and unit is mm; The linear equation of curve 1 is:
(x
1-a
1)
2+(y
1-b
1)
2＝9
2
The linear equation of curve 2 is:
(x
2-a
2)
2+(y
2+b
2)
2＝55
2
The linear equation of curve 3 is:
(x
3-a
3)
2+(y
3+b
3)
2＝56
2
Wherein a
1be the horizontal coordinate value in the center of circle of curve 1, value is 11 ~ 17;
B
1be the along slope coordinate value in the center of circle of curve 1, value is 8 ~ 12;
A
2be the center of circle horizontal coordinate value of curve 2, value is 43 ~ 51;
B
2be the along slope coordinate value in the center of circle of curve 2, value is 20 ~ 23;
A
3be the horizontal coordinate value in the center of circle of curve 3, value is 59 ~ 73;
B
3be the along slope coordinate value in the center of circle of curve 3, value is 29 ~ 34;
The central angle of curve 1 is 165 ~ 190 °, and the central angle of curve 2 is 66 ~ 105 °, and the central angle of curve 3 is 54 ~ 86 °;
The minimum clearance of above-mentioned adjustable plate distance bluff body is 3 ~ 6mm, the gap of distance Hydrodynamic cavitation cavity wall is 5 ~ 10mm.
Above-mentioned adjustable plate is that the central axis direction along Hydrodynamic cavitation chamber on the inwall of spherical plate or smooth plate arranges overhead gage and lower baffle plate, the centre of sphere of spherical plate on the central shaft in Hydrodynamic cavitation chamber, overhead gage and lower baffle plate symmetrical about central shaft.
Height between above-mentioned overhead gage and lower baffle plate preferably 28 ~ 41mm, the central angle of spherical plate is 104 ~ 113 °, and spherical radius is 36.5 ~ 44mm preferably, and the spherical crown height formed is 3 ~ 5mm.
The distance of above-mentioned smooth plate distance Hydrodynamic cavitation chamber water-in is 55 ~ 70mm.
The inlet end inwall arc surface structure in above-mentioned Hydrodynamic cavitation chamber, its longitudinal cross-section arc radius is 25 ~ 67mm, and central angle is 42 ~ 75 °, to avoid the formation of fluid dead angle.
The feed-water end diameter D of above-mentioned convergence type nozzle
enterwith water side diameter D
go outbetween pass be: 5D
go out>=D
enter>=2D
go out, to ensure hydrodynamicpressure size to fit, work in coordination with bluff body, strengthen cavitation effect.
The equipment of Hydrodynamic Cavitation of increase cavitation number of free radical of the present invention is by arranging bluff body in Hydrodynamic cavitation chamber, make between convergence type nozzle and Hydrodynamic cavitation chamber, to form multistage venturi-type passage, be obstructed before and after High-Pressure Water formation high-pressure spray, because jet exit is little, Hydrodynamic cavitation chamber intracavity space is large, form negative pressuren zone, high-pressure spray generates cavitation bubble at negative pressure region, utilize fluid along wall flow effect, the cavitation bubble that negative pressure region is generated moves on to high pressure area in the effect downstream of wall effect, and run into inwall in high pressure area and adjustable plate obstacle collapses, generate a large amount of free radical, thus effectively improve the ability of Hydrodynamic cavitation degradable organic pollutant, to reach the object improving and strengthen cavitation process waste water effect, structure of the present invention is simple, efficiency is high, easy to operate, be easy to management, cost is low, be suitable for industrial applications.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the left view of the bluff body 3 in Fig. 1.
Fig. 3 is the structural representation of adjustable plate 4.
Embodiment
Now with accompanying drawing, technical scheme of the present invention is further described, but the present invention is not limited only to following enforcement situation in conjunction with the embodiments.
Embodiment 1
See Fig. 1 and Fig. 2, the equipment of Hydrodynamic Cavitation of the increase cavitation number of free radical of the present embodiment is connected and composed by convergence type nozzle 1, Hydrodynamic cavitation chamber 2, bluff body 3, adjustable plate 4, fixed link 5.
The Hydrodynamic cavitation chamber 2 of the present embodiment is the diameter of horizontal positioned is the cylinder-like structure of 76mm, the chamber left end sidepiece in Hydrodynamic cavitation chamber 2 is processed with bottom water-in, right-hand member and is processed with water outlet, water-in is provided with convergence type nozzle 1, the water-in diameter D of this convergence type nozzle 1
enterfor 20mm, water outlet diameter D
go outfor 8mm, i.e. D
enter=2.5D
go out, make convergence type nozzle 1 and Hydrodynamic cavitation chamber 2 form one-level venturi-type structure.Stop in dead angle after fluid enters Hydrodynamic cavitation chamber 2, the feed-water end inwall in Hydrodynamic cavitation chamber 2 is processed as arc surface structure, its longitudinal cross-section arc radius is 25mm, and central angle is 75 °.Become air pocket in order to avoid a large amount of micro-bubble groups entered in Hydrodynamic cavitation chamber 2 merge each other and break, bluff body 3 is installed in Hydrodynamic cavitation chamber 2, bluff body 3 is fixed on the inwall in Hydrodynamic cavitation chamber 2 by fixed link 5, fixed link 5 is uniformly at intervals in the periphery of bluff body 3, and its diameter is relatively little, be as the criterion not affect current.
The bluff body 3 of the present embodiment be by curve 1 and curve 2, curve 3 according to clockwise direction end to end become closed curve to rotate a circle formed rotator around the central shaft in Hydrodynamic cavitation chamber 2; Form secondary venturi-type passage between the inwall in its outer wall and Hydrodynamic cavitation chamber 2, and himself forms three grades of venturi channel.
With the intersection point of the water-in end face in Hydrodynamic cavitation chamber 2 and central shaft for true origin, central shaft is x-axis, and the vertical medullary ray that the water-in end face in Hydrodynamic cavitation chamber 2 intersects vertically with x-axis is y-axis, and unit is mm;
The linear equation of curve 1 is: (x
1-a
1)
2+ (y
1-b
1)
2=9
2
A
1be the horizontal coordinate value in the center of circle of curve 1, value is 11;
B
1be the along slope coordinate value in the center of circle of curve 1, value is 8;
The central angle of curve 1 is 180 °.
The linear equation of curve 2 is: (x
2-a
2)
2+ (y
2+ b
2)
2=55
2
A
2be the center of circle horizontal coordinate value of curve 2, value is 47;
B
2be the along slope coordinate value in the center of circle of curve 2, value is 20;
The central angle of curve 2 is 93 °.
The linear equation of curve 3 is: (x
3-a
3)
2+ (y
3+ b
3)
2=56
2
A
3be the horizontal coordinate value in the center of circle of curve 3, value is 63;
B
3be the along slope coordinate value in the center of circle of curve 3, value is 32;
The central angle of curve 3 is 75 °.
In Hydrodynamic cavitation chamber 2, the right side of bluff body 3 is installed with adjustable plate 4 near exit by fixed link 5 and screw threads for fastening web member, see Fig. 3, the adjustable plate 4 of the present embodiment is spherical plate 4-1 and overhead gage 4-2, lower baffle plate 4-3 connects and composes, overhead gage 4-2 and lower baffle plate 4-3 is welded to connect on the inwall of spherical plate 4-1, and it is symmetrical about the central shaft in Hydrodynamic cavitation chamber 2, the central angle of the spherical plate 4-1 of the present embodiment is 113 °, spherical radius is 37mm, the spherical crown height formed is 4mm, the centre of sphere of spherical plate 4-1 on the central shaft in Hydrodynamic cavitation chamber 2 and circumferential edge along and the inwall in Hydrodynamic cavitation chamber 2 between form the gap of 8mm, ensure that current are discharged through water outlet after passing through.Height between the present embodiment overhead gage 4-2 and lower baffle plate 4-3 is 32mm, the gap of overhead gage 4-2 and lower baffle plate 4-3 distance bluff body 3 be 5mm, distance Hydrodynamic cavitation chamber 2 inwall distance identical with spherical plate 4-1.Cavitation bubble collides with spherical plate 4-1 in high pressure area, a part flows out through the slit between spherical plate 4-1 and Hydrodynamic cavitation chamber 2 inwall, a part again collides with upper and lower baffle plate 4-3 after spherical plate 4-1 retains, entirely collapse, form High Temperature High Pressure shockwave afterwards and produce a large amount of free radicals, improving the ability of Hydrodynamic cavitation degradable organic pollutant further.In order to ensure that cavitation bubble entirely collapses further, the part of spherical plate 4-1 between overhead gage 4-2, lower baffle plate 4-3 is processed as two dimensional structure.
The equipment of Hydrodynamic Cavitation of the increase cavitation number of free radical of the present embodiment in use, High-Pressure Water penetrates from forming jet after the inlet end of spout enters the convergence type passage of nozzle 1 from nozzle 1 exit end, because nozzle 1 is little, the space enlargement in Hydrodynamic cavitation chamber 2, low pressure area is formed in Hydrodynamic cavitation chamber 2, now small bubble population starts to be formed, according to along wall effect after micro-bubble group runs into the stop of bluff body 3, microbubble group is dispersed into two strands along the inwall in Hydrodynamic cavitation chamber 2 and the outer wall of bluff body 3, a part is along L1 region, another part is along L2 region, two strands are moved respectively to L3 high pressure area for bubble under action of a fluid, collide with inside, Hydrodynamic cavitation chamber 2 and adjustable plate 4 and collapse, thus produce a large amount of free radicals under forming High Temperature High Pressure and shockwave dual function, and then effectively improve the ability of Hydrodynamic cavitation degradable organic pollutant.
Embodiment 2
The water-in in the Hydrodynamic cavitation chamber 2 of the present embodiment is provided with nozzle 1, and this nozzle 1 is convergence type structure, forms the fluid channel of convergence type, its water-in diameter D
enterfor 20cm, water outlet diameter D
go outfor 10cm, D
enter/ D
go outbe 2.
The bluff body 3 installed in Hydrodynamic cavitation chamber 2 be by curve 1 and curve 2, curve 3 according to clockwise direction end to end become closed curve to rotate a circle formed rotator around the central shaft in Hydrodynamic cavitation chamber 2;
The linear equation of curve 1 is: (x
1-a
1)
2+ (y
1-b
1)
2=9
2
A
1be the horizontal coordinate value in the center of circle of curve 1, value is 12, unit mm;
B
1be the along slope coordinate value in the center of circle of curve 1, value is 9, unit mm;
The central angle of curve 1 is 190 °.
The linear equation of curve 2 is: (x
2-a
2)
2+ (y
2+ b
2)
2=55
2
A
2be the center of circle horizontal coordinate value of curve 2, value is 43, unit mm;
B
2be the along slope coordinate value in the center of circle of curve 2, value is 23, unit mm;
The central angle of curve 2 is 66 °.
The linear equation of curve 3 is: (x
3-a
3)
2+ (y
3+ b
3)
2=56
2
A
3be the horizontal coordinate value in the center of circle of curve 3, value is 66, unit mm;
B
3be the along slope coordinate value in the center of circle of curve 3, value is 29, unit mm;
The central angle of curve 3 is 54 °.
In Hydrodynamic cavitation chamber 2, the right side of bluff body 3 is provided with adjustable plate 4 near exit, the adjustable plate 4 of the present embodiment is spherical plate 4-1 and overhead gage 4-2, lower baffle plate 4-3 connects and composes, spherical plate 4-1 is at overhead gage 4-2, part between lower baffle plate 4-3 is processed as two dimensional structure, overhead gage 4-2 and lower baffle plate 4-3 is welded to connect on the inwall of spherical plate 4-1, and it is symmetrical about the central shaft in Hydrodynamic cavitation chamber 2, the central angle of the spherical plate 4-1 of the present embodiment is 104 °, spherical radius is 44mm, the spherical crown height formed is 5mm, the centre of sphere of spherical plate 4-1 on the central shaft in Hydrodynamic cavitation chamber 2 and circumferential edge along and the inwall in Hydrodynamic cavitation chamber 2 between form the gap of 5mm, ensure that current are discharged through water outlet after passing through.Height between the present embodiment overhead gage 4-2 and lower baffle plate 4-3 is 41mm, the gap of overhead gage 4-2 and lower baffle plate 4-3 distance bluff body 4 be 3mm, distance Hydrodynamic cavitation chamber 2 inwall distance identical with spherical plate 4-1.
Other parts and annexation thereof, principle of work are identical with embodiment 1.
Embodiment 3
The feed-water end inwall in the Hydrodynamic cavitation chamber 2 of the present embodiment is processed as arc surface structure, and its longitudinal cross-section arc radius is 39mm, and central angle is 62 °.At the convergence type that is provided with on the water-in nozzle 1 in Hydrodynamic cavitation chamber 2, its water-in diameter D
enterfor 20cm, water outlet diameter D
go outfor 4cm, D
enter/ D
go outbe 5.
The bluff body 3 installed in Hydrodynamic cavitation chamber 2 be by curve 1 and curve 2, curve 3 according to clockwise direction end to end become closed curve to rotate a circle formed rotator around the central shaft in Hydrodynamic cavitation chamber 2;
The linear equation of curve 1 is: (x
1-a
1)
2+ (y
1-b
1)
2=9
2
A
1be the horizontal coordinate value in the center of circle of curve 1, value is 12, unit mm;
B
1be the along slope coordinate value in the center of circle of curve 1, value is 12, unit mm;
The central angle of curve 1 is 170 °.
The linear equation of curve 2 is: (x
2-a
2)
2+ (y
2+ b
2)
2=55
2
A
2be the center of circle horizontal coordinate value of curve 2, value is 43, unit mm;
B
2be the along slope coordinate value in the center of circle of curve 2, value is 21, unit mm;
The central angle of curve 2 is 74 °.
The linear equation of curve 3 is: (x
3-a
3)
2+ (y
3+ b
3)
2=56
2
A
3be the horizontal coordinate value in the center of circle of curve 3, value is 62, unit mm;
B
3be the along slope coordinate value in the center of circle of curve 3, value is 29, unit mm;
The central angle of curve 3 is 66 °.
In Hydrodynamic cavitation chamber 2, the right side of bluff body 3 is provided with adjustable plate 4 near exit, the adjustable plate 4 of the present embodiment is spherical plate 4-1 and overhead gage 4-2, lower baffle plate 4-3 connects and composes, spherical plate 4-1 is at overhead gage 4-2, part between lower baffle plate 4-3 is processed as two dimensional structure, overhead gage 4-2 and lower baffle plate 4-3 is welded to connect on the inwall of spherical plate 4-1, and it is symmetrical about the central shaft in Hydrodynamic cavitation chamber 2, the central angle of the spherical plate 4-1 of the present embodiment is 105 °, spherical radius is 36.5mm, the spherical crown height formed is 3mm, the centre of sphere of spherical plate 4-1 on the central shaft in Hydrodynamic cavitation chamber 2 and circumferential edge along and the inwall in Hydrodynamic cavitation chamber 2 between form the gap of 10mm, ensure that current are discharged through water outlet after passing through.Height between the present embodiment overhead gage 4-2 and lower baffle plate 4-3 is 28mm, the gap of overhead gage 4-2 and lower baffle plate 4-3 distance bluff body 3 be 6mm, distance Hydrodynamic cavitation chamber 2 inwall distance identical with spherical plate 4-1.
Other parts and annexation thereof, principle of work are identical with embodiment 1.
Embodiment 4
The feed-water end inwall in the Hydrodynamic cavitation chamber 2 of the present embodiment is processed as arc surface structure, and its longitudinal cross-section arc radius is 67mm, and central angle is 42 °.The water-in in Hydrodynamic cavitation chamber 2 is provided with convergence type nozzle 1, its water-in diameter D
enterfor 20cm, water outlet diameter D
go outfor 5cm, D
enter/ D
go outbe 4.
The bluff body 3 installed in Hydrodynamic cavitation chamber 2 be by curve 1 and curve 2, curve 3 according to clockwise direction end to end become closed curve to rotate a circle formed rotator around the central shaft in Hydrodynamic cavitation chamber 2;
The linear equation of curve 1 is: (x
1-a
1)
2+ (y
1-b
1)
2=9
2
A
1be the horizontal coordinate value in the center of circle of curve 1, value is 11, unit mm;
B
1be the along slope coordinate value in the center of circle of curve 1, value is 9, unit mm;
The central angle of curve 1 is 165 °.
The linear equation of curve 2 is: (x
2-a
2)
2+ (y
2+ b
2)
2=55
2
A
2be the center of circle horizontal coordinate value of curve 2, value is 46, unit mm;
B
2be the along slope coordinate value in the center of circle of curve 2, value is 20, unit mm;
The central angle of curve 2 is 105 °.
The linear equation of curve 3 is: (x
3-a
3)
2+ (y
3+ b
3)
2=56
2
A
3be the horizontal coordinate value in the center of circle of curve 3, value is 59, unit mm;
B
3be the along slope coordinate value in the center of circle of curve 3, value is 34, unit mm;
The central angle of curve 3 is 86 °.
Other parts and annexation thereof, principle of work are identical with embodiment 1.
Embodiment 5
The bluff body 3 that the present embodiment is installed in Hydrodynamic cavitation chamber 2 be by curve 1 and curve 2, curve 3 according to clockwise direction end to end become closed curve to rotate a circle formed rotator around the central shaft in Hydrodynamic cavitation chamber 2;
The linear equation of curve 1 is: (x
1-a
1)
2+ (y
1-b
1)
2=9
2
A
1be the horizontal coordinate value in the center of circle of curve 1, value is 19, unit mm;
B
1be the along slope coordinate value in the center of circle of curve 1, value is 9, unit mm;
The central angle of curve 1 is 190 °.
The linear equation of curve 2 is: (x
2-a
2)
2+ (y
2+ b
2)
2=55
2
A
2be the center of circle horizontal coordinate value of curve 2, value is 50, unit mm;
B
2be the along slope coordinate value in the center of circle of curve 2, value is 23, unit mm;
The central angle of curve 2 is 66 °.
The linear equation of curve 3 is: (x
3-a
3)
2+ (y
3+ b
3)
2=56
2
A
3be the horizontal coordinate value in the center of circle of curve 3, value is 73, unit mm;
B
3be the along slope coordinate value in the center of circle of curve 3, value is 29, unit mm;
The central angle of curve 3 is 54 °.
Other parts and annexation thereof, principle of work are identical with embodiment 1.
Embodiment 6
In Hydrodynamic cavitation chamber 2, bluff body 3 is installed in the present embodiment, bluff body 3 be by curve 1 and curve 2, curve 3 according to clockwise direction end to end become closed curve to rotate a circle formed rotator around the central shaft in Hydrodynamic cavitation chamber 2;
The linear equation of curve 1 is: (x
1-a
1)
2+ (y
1-b
1)
2=9
2
A
1be the horizontal coordinate value in the center of circle of curve 1, value is 15, unit mm;
B
1be the along slope coordinate value in the center of circle of curve 1, value is 8, unit mm;
The central angle of curve 1 is 179 °.
The linear equation of curve 2 is: (x
2-a
2)
2+ (y
2+ b
2)
2=55
2
A
2be the center of circle horizontal coordinate value of curve 2, value is 51, unit mm;
B
2be the along slope coordinate value in the center of circle of curve 2, value is 20, unit mm;
The central angle of curve 2 is 93 °.
The linear equation of curve 3 is: (x
3-a
3)
2+ (y
3+ b
3)
2=56
2
A
3be the horizontal coordinate value in the center of circle of curve 3, value is 67, unit mm;
B
3be the along slope coordinate value in the center of circle of curve 3, value is 32, unit mm;
The central angle of curve 3 is 75 °.
Other parts and annexation thereof, principle of work are identical with embodiment 1.
Embodiment 7
The bluff body 3 of the present embodiment be by curve 1 and curve 2, curve 3 according to clockwise direction end to end become closed curve to rotate a circle formed rotator around the central shaft in Hydrodynamic cavitation chamber 2;
The linear equation of curve 1 is: (x
1-a
1)
2+ (y
1-b
1)
2=9
2
A
1be the horizontal coordinate value in the center of circle of curve 1, value is 17, unit mm;
B
1be the along slope coordinate value in the center of circle of curve 1, value is 12, unit mm;
The central angle of curve 1 is 170 °.
The linear equation of curve 2 is: (x
2-a
2)
2+ (y
2+ b
2)
2=55
2
A
2be the center of circle horizontal coordinate value of curve 2, value is 48, unit mm;
B
2be the along slope coordinate value in the center of circle of curve 2, value is 21, unit mm;
The central angle of curve 2 is 74 °.
The linear equation of curve 3 is: (x
3-a
3)
2+ (y
3+ b
3)
2=56
2
A
3be the horizontal coordinate value in the center of circle of curve 3, value is 67, unit mm;
B
3be the along slope coordinate value in the center of circle of curve 3, value is 29, unit mm;
The central angle of curve 3 is 66 °.
Other parts and annexation thereof, principle of work are identical with embodiment 1.
The structure of the adjustable plate 4 of above-described embodiment 1 ~ 7 can also be by along Hydrodynamic cavitation chamber 2 radial through fixed link, the hard-wired smooth plate of threaded fastener and the overhead gage 4-2 be welded on inside smooth plate and lower baffle plate 4-3, overhead gage 4-2 and lower baffle plate 4-3 level are installed and parallel with the central shaft in Hydrodynamic cavitation chamber 2, replace by the spherical plate 4-1 smooth plate in above-described embodiment, the gap of distance Hydrodynamic cavitation chamber 2, the edge inwall of smooth plate is 5 ~ 10mm, the distance of smooth plate distance Hydrodynamic cavitation chamber 2 water-in is 55 ~ 70mm, adjust in right amount in scope of design according to actual service conditions such as water treatment amount sizes.
The specific design parameter of bluff body 3 of the present invention also can adjust according to practical situation, is not limited only to above-mentioned enforcement situation.
Claims (6)
1. one kind increases the equipment of Hydrodynamic Cavitation of cavitation number of free radical, comprise Hydrodynamic cavitation chamber (2), it is characterized in that: on the side water-in of Hydrodynamic cavitation chamber (2), be provided with convergence type nozzle (1), the internal diameter in Hydrodynamic cavitation chamber (2) is greater than nozzle (1) water side internal diameter, make convergence type nozzle (1) and Hydrodynamic cavitation chamber (2) form one-level venturi-type structure, bottom Hydrodynamic cavitation chamber (2) upper the other end relative with feed-water end, be processed with water outlet; Be provided with bluff body (3) and adjustable plate (4) in the inside of Hydrodynamic cavitation chamber (2), bluff body (3) and adjustable plate (4) are fixed by fixed link (5) spaced apart and Hydrodynamic cavitation chamber (2) inwall;
Above-mentioned bluff body (3) to be rotated a circle formed rotator around the central shaft of Hydrodynamic cavitation chamber (2) according to the end to end closed curve of clockwise direction by curve 1 and curve 2, curve 3, forms secondary venturi-type passage with the inwall of Hydrodynamic cavitation chamber (2);
With the intersection point of the water-in end face of Hydrodynamic cavitation chamber (2) and central shaft for true origin, central shaft is x-axis, and the vertical medullary ray that the water-in end face of Hydrodynamic cavitation chamber (2) intersects vertically with x-axis is y-axis, and unit is mm;
The linear equation of curve 1 is:
(x
1-a
1)
2+(y
1-b
1)
2＝9
2
The linear equation of curve 2 is:
(x
2-a
2)
2+(y
2+b
2)
2＝55
2
The linear equation of curve 3 is:
(x
3-a
3)
2+(y
3+b
3)
2＝56
2
Wherein a
1be the horizontal coordinate value in the center of circle of curve 1, value is 11 ~ 17;
B
1be the along slope coordinate value in the center of circle of curve 1, value is 8 ~ 12;
A
2be the center of circle horizontal coordinate value of curve 2, value is 43 ~ 51;
B
2be the along slope coordinate value in the center of circle of curve 2, value is 20 ~ 23;
A
3be the horizontal coordinate value in the center of circle of curve 3, value is 59 ~ 73;
B
3be the along slope coordinate value in the center of circle of curve 3, value is 29 ~ 34;
The central angle of curve 1 is 165 ~ 190 °, and the central angle of curve 2 is 66 ~ 105 °, and the central angle of curve 3 is 54 ~ 86 °;
The minimum clearance of above-mentioned adjustable plate (4) distance bluff body (3) is 3 ~ 6mm, the gap of distance Hydrodynamic cavitation chamber (2) inwall is 5 ~ 10mm.
2. the equipment of Hydrodynamic Cavitation of increase cavitation number of free radical according to claim 1, it is characterized in that: described adjustable plate (4) is that the central axis direction along Hydrodynamic cavitation chamber (2) on the inwall of spherical plate (4-1) or smooth plate arranges overhead gage (4-2) and lower baffle plate (4-3), the centre of sphere of spherical plate (4-1) is on the central shaft of Hydrodynamic cavitation chamber (2), and overhead gage (4-2) is symmetrical about central shaft with lower baffle plate (4-3).
3. the equipment of Hydrodynamic Cavitation of increase cavitation number of free radical according to claim 2, it is characterized in that: the height between described overhead gage (4-2) and lower baffle plate (4-3) is 28 ~ 41mm, the central angle of spherical plate (4-1) is 104 ~ 113 °, spherical radius is 36.5 ~ 44mm, and the spherical crown height formed is 3 ~ 5mm.
4. the equipment of Hydrodynamic Cavitation of increase cavitation number of free radical according to claim 2, is characterized in that: the distance of described smooth plate distance Hydrodynamic cavitation chamber (2) water-in is 55 ~ 70mm.
5. the equipment of Hydrodynamic Cavitation of increase cavitation number of free radical according to claim 1, it is characterized in that: the inlet end inwall of described Hydrodynamic cavitation chamber (2) is arc surface structure, its longitudinal cross-section arc radius is 25 ~ 67mm, and central angle is 42 ~ 75 °.
6. the equipment of Hydrodynamic Cavitation of increase cavitation number of free radical according to claim 1, is characterized in that: the feed-water end diameter D of described convergence type nozzle (1)
enterwith water side diameter D
go outbetween pass be: 5D
go out>=D
enter>=2D
go out.
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| CN106630370A (en) * | 2015-11-04 | 2017-05-10 | 东莞源控环保科技有限公司 | Hydrodynamic cavitation phosphorus removal device, and sewage treatment system and method applying device |
| CN106630523A (en) * | 2015-11-04 | 2017-05-10 | 东莞源控环保科技有限公司 | Hydrodynamic cavitation sludge reduction machine and wastewater treatment method thereof |
| CN106745489A (en) * | 2016-12-24 | 2017-05-31 | 青岛科技大学 | A kind of Hydrodynamic cavitation sewage disposal device |
| WO2018201302A1 (en) * | 2017-05-02 | 2018-11-08 | 东莞源控环保科技有限公司 | Denitrification treatment system and method for urban wastewater |
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| CN112023741B (en) * | 2020-08-28 | 2021-11-05 | 中南大学 | Two-section cavitation bubble generator |
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