CN104628054B - A kind of equipment of Hydrodynamic Cavitation of compound bluff body - Google Patents
A kind of equipment of Hydrodynamic Cavitation of compound bluff body Download PDFInfo
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- CN104628054B CN104628054B CN201410852446.7A CN201410852446A CN104628054B CN 104628054 B CN104628054 B CN 104628054B CN 201410852446 A CN201410852446 A CN 201410852446A CN 104628054 B CN104628054 B CN 104628054B
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Abstract
The present invention relates to the equipment of Hydrodynamic Cavitation of a kind of compound bluff body, it is that the water inlet end in Hydrodynamic cavitation chamber is provided with nozzle, bluff body before the throat of nozzle is fixing, front bluff body is to be spliced by cone and semiellipsoid, bluff body and adjustable plate after Hydrodynamic cavitation intracavity is provided with；Rear bluff body is to be rotated a circle the rotary body formed around the central shaft in Hydrodynamic cavitation chamber according to closed curve end to end clockwise by curve 1 and curve 2, curve 3；Adjustable plate is to be provided with overhead gage and lower baffle plate on the inwall of spherical plate or surface plate, the present invention hinders by arranging forward and backward bluff body, fluid passage is made to form multistage venturi conduit, High-Pressure Water is worked in coordination with and is formed high-pressure spray after being obstructed at the negative pressure region substantial amounts of cavitation bubble of generation, vacillate higher-pressure region run into obstacle collapse generate a large amount of free radicals, thus being effectively improved the ability of Hydrodynamic cavitation degradable organic pollutant, to reach to improve and strengthen the purpose of cavitation process waste water effect.
Description
Technical field
The invention belongs to fluid liquid cavitation generating means studying technological domain, particularly relate to the equipment of Hydrodynamic Cavitation of a kind of compound bluff body utilizing Hydrodynamic cavitation degradation treatment organic pollutant wastewater.
Technical background
" China Environmental State Bulletin " issued according to environmental conservation general bureau claims, and the water quality assessment that nearly 140,000 kilometers of rivers, the whole nation are carried 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 Environmental Protection Administration issue another important investigation display, in 131 rivers flowing through city of the China added up, severe contamination have 36, serious pollution have 21, intermediate pollution have 38.
Due to the pollution of water body, causing many water resources to recycle, thus having increased the weight of the deficient degree of water resource, have impact on the sustainable use of environment and economic sustainable development.Therefore, seek new method and technology is big to flow, pollutant are many and the industry of complicated component again, agricultural pollution waste water carry out effectively, advanced treating, the recycling for water resource is created conditions.
Physical method carries out water process, owing to not producing secondary pollution, is referred to as " Green Water process ", of great interest.Cavitation method therein, because inexpensively 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 processes and creates special form.
Venturi tube is one of representative of early stage waterpower cavitation generator, and its cavitation scrubbing water process that appears as brings new method.But the application that traditional Venturi tube is 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, causing that the effect processing organic pollution is undesirable, therefore the method for this process sewage never widely uses in Practical Project.
Summary of the invention
In order to effectively overcome the technological deficiency existing for conventional hydraulic cavitation, the invention provides one can make fluid generate a large amount of free radicals, it is effectively improved the ability of Hydrodynamic cavitation degradable organic pollutant, and easy to operate, be easily managed, cost is low, the equipment of Hydrodynamic Cavitation of the simple compound bluff body of technical pattern.
The technical scheme is that this device includes Hydrodynamic cavitation chamber, the sidepiece in Hydrodynamic cavitation chamber has into water port, water inlet port is provided with nozzle, bottom the other end relative with water inlet port, processing has outlet, bluff body before being fixed by support bar on throat's central shaft of nozzle, the afterbody of front bluff body extends to Hydrodynamic cavitation intracavity, bluff body and adjustable plate after being disposed with on Hydrodynamic cavitation intracavity central shaft；
Above-mentioned front bluff body is sequentially to be spliced by cone and semiellipsoid, Mosaic face overlaps with the water inlet end face in Hydrodynamic cavitation chamber, wherein the cone angle of cone is 15～20 °, cone height is 34～56mm, the curvilinear equation of semiellipsoid is formula (1), and with the intersection point of the water inlet end face in Hydrodynamic cavitation chamber and its central shaft for zero, the central shaft in Hydrodynamic cavitation chamber is x-axis, the vertical centrage intersected vertically with x-axis on the water inlet end face in Hydrodynamic cavitation chamber is y-axis, and unit is mm；
Formula (1) is:
In formula (1), m is major semiaxis, and value is 60～70；N is semi-minor axis, and value is 5～7；X is the major axis variable of elliptic curve, x >=0；Y is the short axle variable of elliptic curve；
Above-mentioned rear bluff body is to be rotated a circle the rotary body formed around the central shaft in Hydrodynamic cavitation chamber according to closed curve end to end clockwise by curve 1 and curve 2, curve 3；
The linear equation of curve 1 is:
(x1-a1)2+(y1-b1)2=92
The linear equation of curve 2 is:
(x2-a2)2+(y2+b2)2=552
The linear equation of curve 3 is:
(x3-a3)2+(y3+b3)2=562
Wherein a1Being the horizontal coordinate value in the center of circle of curve 1, value is 11～17；
b1Being the longitudinal coordinate value in the center of circle of curve 1, value is 8～12；
a2Being the center of circle horizontal coordinate value of curve 2, value is 43～51；
b2Being the longitudinal coordinate value in the center of circle of curve 2, value is 20～23；
a3Being the horizontal coordinate value in the center of circle of curve 3, value is 59～73；
b3Being the longitudinal 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 °；
Above-mentioned adjustable plate be spherical plate or surface plate and rear bluff body just to side inwall on be horizontally disposed with overhead gage and lower baffle plate along the central axis direction in Hydrodynamic cavitation chamber, the centre of sphere of spherical plate is on the central shaft in Hydrodynamic cavitation chamber, and overhead gage and lower baffle plate are about substantially symmetrical about its central axis.
Highly preferred 28～41mm between above-mentioned overhead gage and lower baffle plate, preferably 104～113 ° of the central angle of spherical plate, spherical radius selects 36.5～44mm, and the spherical crown height formed can within the scope of 3～5mm.
Above-mentioned overhead gage and lower baffle plate are 5～10mm apart from the gap of the edge distance Hydrodynamic cavitation cavity wall that the gap of rear bluff body is 3～6mm, spherical plate or surface plate, it is ensured that cavitation bubble can pass through along wall.
The arrival end inwall in above-mentioned Hydrodynamic cavitation chamber is arc surface structure, and its longitudinal cross-section arc radius is 25～67mm, and central angle is 42～75 °, it is to avoid produce flow blind angle.
The equipment of Hydrodynamic Cavitation of the compound bluff body of the present invention is the front bluff body by arranging the particular curve extending to Hydrodynamic cavitation intracavity in nozzle, nozzle throat channel narrows and in Hydrodynamic cavitation chamber gradually expand thus forming Venturi tube-type spreader passage, space enlargement afterwards, form negative pressuren zone, again work in coordination with after bluff body after composite curve again and be obstructed, form multistage venturi conduit, high-pressure spray is formed after making that High-Pressure Water is collaborative and being obstructed, high-pressure spray generates substantial amounts of cavitation bubble at negative pressure region, recycling fluid is along wall flowing effect, cavitation bubble is made to move on to higher-pressure region in the effect downstream of wall effect, and run into inwall in higher-pressure region and adjustable plate obstacle collapses, generate a large amount of free radical, thus being effectively improved the ability of Hydrodynamic cavitation degradable organic pollutant, to reach to improve and strengthen the purpose of cavitation process waste water effect, the simple in construction of the present invention, efficiency is high, easy to operate, it is easily managed, cost is low, be suitable to industrial applications.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the left side view of rear bluff body 4 in Fig. 1.
Fig. 3 is the structural representation of adjustable plate 5 in Fig. 1.
Detailed description of the invention
In conjunction with embodiment and accompanying drawing, technical scheme is further described, but the present invention is not limited only to following enforcement situation.
Embodiment 1
Referring to Fig. 1 and Fig. 2, the equipment of Hydrodynamic Cavitation of the compound bluff body of the present embodiment is to be connected and composed by nozzle 1, front bluff body 2, Hydrodynamic cavitation chamber 3, rear bluff body 4, adjustable plate 5, fixing bar 6 and support bar 7.
The Hydrodynamic cavitation chamber 3 of the present embodiment is the cylinder-like structure that diameter is 76mm of horizontal positioned, the chamber left end sidepiece processing in Hydrodynamic cavitation chamber 3 has processing bottom water inlet, right-hand member to have outlet, stop in dead angle after entering Hydrodynamic cavitation chamber 3 in order to avoid fluid, the water inlet end inwall in Hydrodynamic cavitation chamber 3 is processed as arc surface structure, its longitudinal cross-section arc radius is 25mm, and central angle is 75 °.
The water inlet in Hydrodynamic cavitation chamber 3 is provided with nozzle 1, the internal diameter of this nozzle 1 is 20mm, it is 1:3.8 with the ratio of the internal diameter in Hydrodynamic cavitation chamber 3, bluff body 2 before being provided with on throat's central axis of nozzle 1, the outer wall of front bluff body 2 is connected fixing by 3 support bars 7 spaced apart with the inwall of nozzle 1, support bar 7 is distributed in the periphery of front bluff body 2 along the radial symmetric of nozzle 1, the front bluff body 2 of the present embodiment is to be 20 ° by top cone angle, cone height is 36mm, bottom surface radius is the cone of 6mm and semiellipsoid is spliced, Mosaic face overlaps with the water inlet end face in Hydrodynamic cavitation chamber 3, semiellipsoid is made to extend in Hydrodynamic cavitation chamber 3, the minimum perpendicular distance of front bluff body 2 and nozzle 1 is 4mm, it is 0.2:1 with the ratio of the internal diameter of nozzle 1；The semiellipsoid curvilinear equation of front bluff body 2 is formula (1), with the intersection point of the water inlet end face in Hydrodynamic cavitation chamber 3 and its central shaft for zero, the central shaft in Hydrodynamic cavitation chamber 3 is x-axis, the vertical centrage intersected vertically with x-axis on the water inlet end face in Hydrodynamic cavitation chamber 3 is y-axis, and unit is mm；Formula (1) is:
In formula (1), m is major semiaxis, and value is 65；N is semi-minor axis, and value is 6；X is the major axis variable of elliptic curve, x >=0；Y is the short axle variable of elliptic curve.
Before in Hydrodynamic cavitation chamber 3 right side of bluff body 2 be also equipped with after bluff body 4, rear bluff body 4 is installed on same central shaft successively with front bluff body 2, the outer wall of rear bluff body 4 passes through the inwall in fixing the bar 6 and Hydrodynamic cavitation chamber 3 being welded on the inwall of Hydrodynamic cavitation chamber 3 to be fixed, but fixing bar 6 and aforesaid support bar 7 are all able to play fixation do not affect the slender rod piece of current, for supporting & stablizing, its interval is evenly distributed on the periphery of rear bluff body 4.The rear bluff body 4 of the present embodiment be by curve 1 and curve 2, curve 3 according to clockwise end to end become closed curve rotate a circle the rotary body formed around the central shaft of nozzle 1；
The linear equation of curve 1 is: (x1-a1)2+(y1-b1)2=92
a1Being the horizontal coordinate value in the center of circle of curve 1, value is 11；
b1Being the longitudinal 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: (x2-a2)2+(y2+b2)2=552
a2Being the center of circle horizontal coordinate value of curve 2, value is 47；
b2Being the longitudinal 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: (x3-a3)2+(y3+b3)2=562
a3Being the horizontal coordinate value in the center of circle of curve 3, value is 63；
b3Being the longitudinal coordinate value in the center of circle of curve 3, value is 32；
The central angle of curve 3 is 75 °.
Minimum spacing between rear bluff body 4 and front bluff body 2 is 2mm, and rear bluff body 4 is 4mm apart from the minimum spacing of Hydrodynamic cavitation chamber 3 inwall.
After in Hydrodynamic cavitation chamber 3, the right side of bluff body 4 is installed with an adjustable plate 5 near water outlet by 2 the fixing bars 6 being welded on the inwall of Hydrodynamic cavitation chamber 3, referring to Fig. 3, the adjustable plate 5 of the present embodiment is spherical plate 5-1 and overhead gage 5-2, lower baffle plate 5-3 connects and composes, overhead gage 5-2 and lower baffle plate 5-3 horizontal welding are connected on the inwall of spherical plate 5-1 in succession, and the distribution substantially symmetrical about its central axis about Hydrodynamic cavitation chamber 3, the central angle of the spherical plate 5-1 of the present embodiment is 113 °, spherical radius is 37mm, the spherical crown height formed is 4mm, the centre of sphere of spherical plate 5-1 on the central shaft in Hydrodynamic cavitation chamber 3 and circumferential edge along and the inwall in Hydrodynamic cavitation chamber 3 between form the gap of 8mm, ensure that current are discharged through outlet after passing through.Height between the present embodiment overhead gage 5-2 and lower baffle plate 5-3 is 32mm, overhead gage 5-2 and lower baffle plate 5-3 is 5mm apart from the gap of rear bluff body 4, cavitation bubble collides with spherical plate 5-1 in higher-pressure region, part slit between spherical plate 5-1 and Hydrodynamic cavitation chamber 3 inwall flows out, a part again collides with upper and lower baffle plate after spherical plate 5-1 retains, entirely collapse, it is subsequently formed High Temperature High Pressure shock wave and produces substantial amounts of free radical, improving the ability of Hydrodynamic cavitation degradable organic pollutant further.In order to be further ensured that cavitation bubble entirely collapses, spherical plate 5-1 part between overhead gage 5-2, lower baffle plate 5-3 is processed as planar structure.
In use, High-Pressure Water enters in Hydrodynamic cavitation chamber 3 through nozzle 1, after before the water inlet port in Hydrodynamic cavitation chamber 3 runs into, bluff body 2 is obstructed, formation jet penetrates from nozzle 1 port of export, space enlargement within Hydrodynamic cavitation chamber 3, form low-pressure area, micro-bubble group is made to initially form, when after the stop of bluff body 4 after micro-bubble group runs into according to along wall effect, microbubble group is dispersed into two strands along the inwall in Hydrodynamic cavitation chamber 3 and the outer wall of rear bluff body 4, a part is along L1 region, another part is along L2 region, two strands are moved to L3 higher-pressure region respectively for bubble under action of a fluid, collide with Hydrodynamic cavitation chamber 3 inwall and adjustable plate 5 and collapse, thus producing substantial amounts of free radical under High Temperature High Pressure and shock wave dual function, and then it is effectively improved the ability of Hydrodynamic cavitation degradable organic pollutant.
Embodiment 2
The front bluff body 2 of the present embodiment be by top cone angle be 18 °, cone height is 37mm, bottom surface radius is the cone of 5mm and semiellipsoid is spliced, Mosaic face overlaps with the water inlet end face in Hydrodynamic cavitation chamber 3, semiellipsoid is made to extend in Hydrodynamic cavitation chamber 3, the minimum perpendicular distance of front bluff body 2 and nozzle 1 is 5mm, is 0.25:1 with the ratio of the internal diameter of nozzle 1；The semiellipsoid curvilinear equation of front bluff body 2 is formula (1), with the intersection point of the water inlet end face in Hydrodynamic cavitation chamber 3 and its central shaft for zero, the central shaft in Hydrodynamic cavitation chamber 3 is x-axis, the vertical centrage intersected vertically with x-axis on the water inlet end face in Hydrodynamic cavitation chamber 3 is y-axis, and unit is mm；Formula (1) is:
In formula (1), m is major semiaxis, and value is 60；N is semi-minor axis, and value is 5；X is the major axis variable of elliptic curve, x >=0；Y is the short axle variable of elliptic curve.
The rear bluff body 4 of the present embodiment be by curve 1 and curve 2, curve 3 according to clockwise end to end become closed curve rotate a circle the rotary body formed around the central shaft of nozzle 1；
The linear equation of curve 1 is: (x1-a1)2+(y1-b1)2=92
a1Being the horizontal coordinate value in the center of circle of curve 1, value is 12；
b1Being the longitudinal coordinate value in the center of circle of curve 1, value is 9；
The central angle of curve 1 is 190 °.
The linear equation of curve 2 is: (x2-a2)2+(y2+b2)2=552
a2Being the center of circle horizontal coordinate value of curve 2, value is 43；
b2Being the longitudinal coordinate value in the center of circle of curve 2, value is 23；
The central angle of curve 2 is 66 °.
The linear equation of curve 3 is: (x3-a3)2+(y3+b3)2=562
a3Being the horizontal coordinate value in the center of circle of curve 3, value is 66；
b3Being the longitudinal coordinate value in the center of circle of curve 3, value is 29；
The central angle of curve 3 is 54 °.
Minimum spacing between rear bluff body 4 and front bluff body 2 is 2mm, and rear bluff body 4 is 7mm apart from the minimum spacing of Hydrodynamic cavitation chamber 3 inwall.
The adjustable plate 5 of the present embodiment is spherical plate 5-1 and overhead gage 5-2, lower baffle plate 5-3 connects and composes, spherical plate 5-1 is at overhead gage 5-2, part between lower baffle plate 5-3 is processed as planar structure, overhead gage 5-2 and lower baffle plate 5-3 horizontal welding are connected on the inwall of spherical plate 5-1 in succession, and the distribution substantially symmetrical about its central axis about Hydrodynamic cavitation chamber 3, the central angle of the spherical plate 5-1 of the present embodiment is 104 °, spherical radius is 44mm, the spherical crown height formed is 5mm, the centre of sphere of spherical plate 5-1 on the central shaft in Hydrodynamic cavitation chamber 3 and circumferential edge along and the inwall in Hydrodynamic cavitation chamber 3 between form the gap of 5mm, ensure that current are discharged through outlet after passing through.Height between the present embodiment overhead gage 5-2 and lower baffle plate 5-3 is 41mm, and overhead gage 5-2 and lower baffle plate 5-3 is 3mm apart from the gap of rear bluff body 4.
Other parts and annexation, operation principle and embodiment 1 are identical.
Embodiment 3
The water inlet end inwall in the Hydrodynamic cavitation chamber 3 of the present embodiment is processed as arc surface structure, and its longitudinal cross-section arc radius is 25mm, and central angle is 75 °.
The front bluff body 2 of the present embodiment be by top cone angle be 15 °, cone height is 56mm, bottom surface radius is the cone of 7mm and semiellipsoid is spliced, Mosaic face overlaps with the water inlet end face in Hydrodynamic cavitation chamber 3, semiellipsoid is made to extend in Hydrodynamic cavitation chamber 3, the minimum perpendicular distance of front bluff body 2 and nozzle 1 is 3mm, is 0.15:1 with the ratio of the internal diameter of nozzle 1；The semiellipsoid curvilinear equation of front bluff body 2 is formula (1), with the intersection point of the water inlet end face in Hydrodynamic cavitation chamber 3 and its central shaft for zero, the central shaft in Hydrodynamic cavitation chamber 3 is x-axis, the vertical centrage intersected vertically with x-axis on the water inlet end face in Hydrodynamic cavitation chamber 3 is y-axis, and unit is mm；Formula (1) is:
In formula (1), m is major semiaxis, and value is 70；N is semi-minor axis, and value is 7；X is the major axis variable of elliptic curve, x >=0；Y is the short axle variable of elliptic curve.
The rear bluff body 4 of the present embodiment be by curve 1 and curve 2, curve 3 according to clockwise end to end become closed curve rotate a circle the rotary body formed around the central shaft of nozzle 1；Wherein,
The linear equation of curve 1 is: (x1-a1)2+(y1-b1)2=92
a1Being the horizontal coordinate value in the center of circle of curve 1, value is 12；
b1Being the longitudinal coordinate value in the center of circle of curve 1, value is 12；
The central angle of curve 1 is 170 °.
The linear equation of curve 2 is: (x2-a2)2+(y2+b2)2=552
a2Being the center of circle horizontal coordinate value of curve 2, value is 43；
b2Being the longitudinal coordinate value in the center of circle of curve 2, value is 21；
The central angle of curve 2 is 74 °.
The linear equation of curve 3 is: (x3-a3)2+(y3+b3)2=562
a3Being the horizontal coordinate value in the center of circle of curve 3, value is 62；
b3Being the longitudinal coordinate value in the center of circle of curve 3, value is 29；
The central angle of curve 3 is 66 °.
Minimum spacing between rear bluff body 4 and front bluff body 2 is 2mm, and rear bluff body 4 is 5mm apart from the minimum spacing of Hydrodynamic cavitation chamber 3 inwall.
The adjustable plate 5 of the present embodiment is spherical plate 5-1 and overhead gage 5-2, lower baffle plate 5-3 connects and composes, spherical plate 5-1 is at overhead gage 5-2, part between lower baffle plate 5-3 is processed as planar structure, overhead gage 5-2 and lower baffle plate 5-3 horizontal welding are connected on the inwall of spherical plate 5-1 in succession, and the distribution substantially symmetrical about its central axis about Hydrodynamic cavitation chamber 3, the central angle of the spherical plate 5-1 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 5-1 on the central shaft in Hydrodynamic cavitation chamber 3 and circumferential edge along and the inwall in Hydrodynamic cavitation chamber 3 between form the gap of 10mm, ensure that current are discharged through outlet after passing through.Height between the present embodiment overhead gage 5-2 and lower baffle plate 5-3 is 28mm, and overhead gage 5-2 and lower baffle plate 5-3 is 6mm apart from the gap of rear bluff body 4.
Other parts and annexation, operation principle and embodiment 1 are identical.
Embodiment 4
The water inlet end inwall in the Hydrodynamic cavitation chamber 3 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 front bluff body 2 of the present embodiment be by top cone angle be 20 °, cone height is 34mm, bottom surface radius is the cone of 5.5mm and semiellipsoid is spliced, Mosaic face overlaps with the water inlet end face in Hydrodynamic cavitation chamber 3, semiellipsoid is made to extend in Hydrodynamic cavitation chamber 3, semiellipsoid curvilinear equation is formula (1), with the intersection point of the water inlet end face in Hydrodynamic cavitation chamber 3 and its central shaft for zero, the central shaft in Hydrodynamic cavitation chamber 3 is x-axis, the vertical centrage intersected vertically with x-axis on the water inlet end face in Hydrodynamic cavitation chamber 3 is y-axis, and unit is mm；Formula (1) is:
In formula (1), m is major semiaxis, and value is 68；N is semi-minor axis, and value is 5.5；X is the major axis variable of elliptic curve, x >=0；Y is the short axle variable of elliptic curve.
The rear bluff body 4 of the present embodiment be by curve 1 and curve 2, curve 3 according to clockwise end to end become closed curve rotate a circle the rotary body formed around the central shaft of nozzle 1；Wherein
The linear equation of curve 1 is: (x1-a1)2+(y1-b1)2=92
a1Being the horizontal coordinate value in the center of circle of curve 1, value is 11；
b1Being the longitudinal coordinate value in the center of circle of curve 1, value is 9；
The central angle of curve 1 is 165 °.
The linear equation of curve 2 is: (x2-a2)2+(y2+b2)2=552
a2Being the center of circle horizontal coordinate value of curve 2, value is 46；
b2Being the longitudinal coordinate value in the center of circle of curve 2, value is 20；
The central angle of curve 2 is 105 °.
The linear equation of curve 3 is: (x3-a3)2+(y3+b3)2=562
a3Being the horizontal coordinate value in the center of circle of curve 3, value is 59；
b3Being the longitudinal coordinate value in the center of circle of curve 3, value is 34；
The central angle of curve 3 is 86 °.
Other parts and annexation, operation principle and embodiment 1 are identical.
Embodiment 5
The front bluff body 2 of the present embodiment be by top cone angle be 16 °, cone height is 44mm, bottom surface radius is the cone of 6mm and semiellipsoid is spliced, Mosaic face overlaps with the water inlet end face in Hydrodynamic cavitation chamber 3, semiellipsoid is made to extend in Hydrodynamic cavitation chamber 3, semiellipsoid curvilinear equation is formula (1), with the intersection point of the water inlet end face in Hydrodynamic cavitation chamber 3 and its central shaft for zero, the central shaft in Hydrodynamic cavitation chamber 3 is x-axis, the vertical centrage intersected vertically with x-axis on the water inlet end face in Hydrodynamic cavitation chamber 3 is y-axis, and unit is mm；Formula (1) is:
In formula (1), m is major semiaxis, and value is 65；N is semi-minor axis, and value is 6.5；X is the major axis variable of elliptic curve, x >=0；Y is the short axle variable of elliptic curve.
The rear bluff body 4 of the present embodiment be by curve 1 and curve 2, curve 3 according to clockwise end to end become closed curve rotate a circle the rotary body formed around the central shaft of nozzle 1, wherein:
The linear equation of curve 1 is: (x1-a1)2+(y1-b1)2=92
a1Being the horizontal coordinate value in the center of circle of curve 1, value is 19；
b1Being the longitudinal coordinate value in the center of circle of curve 1, value is 9；
The central angle of curve 1 is 190 °.
The linear equation of curve 2 is: (x2-a2)2+(y2+b2)2=552
a2Being the center of circle horizontal coordinate value of curve 2, value is 50；
b2Being the longitudinal coordinate value in the center of circle of curve 2, value is 23；
The central angle of curve 2 is 66 °.
The linear equation of curve 3 is: (x3-a3)2+(y3+b3)2=562
a3Being the horizontal coordinate value in the center of circle of curve 3, value is 73；
b3Being the longitudinal coordinate value in the center of circle of curve 3, value is 29；
The central angle of curve 3 is 54 °.
Other parts and annexation, operation principle and embodiment 1 are identical.
Embodiment 6
The front bluff body 2 of the present embodiment be by top cone angle be 16 °, cone height is 52.5mm, bottom surface radius is the cone of 7mm and semiellipsoid is spliced, Mosaic face overlaps with the water inlet end face in Hydrodynamic cavitation chamber 3, semiellipsoid is made to extend in Hydrodynamic cavitation chamber 3, semiellipsoid curvilinear equation is formula (1), with the intersection point of the water inlet end face in Hydrodynamic cavitation chamber 3 and its central shaft for zero, the central shaft in Hydrodynamic cavitation chamber 3 is x-axis, the vertical centrage intersected vertically with x-axis on the water inlet end face in Hydrodynamic cavitation chamber 3 is y-axis, and unit is mm；Formula (1) is:
In formula (1), m is major semiaxis, and value is 68；N is semi-minor axis, and value is 7；X is the major axis variable of elliptic curve, x >=0；Y is the short axle variable of elliptic curve.
The rear bluff body 4 of the present embodiment be by curve 1 and curve 2, curve 3 according to clockwise end to end become closed curve rotate a circle the rotary body formed around the central shaft of nozzle 1；Wherein:
The linear equation of curve 1 is: (x1-a1)2+(y1-b1)2=92
a1Being the horizontal coordinate value in the center of circle of curve 1, value is 15；
b1Being the longitudinal coordinate value in the center of circle of curve 1, value is 8；
The central angle of curve 1 is 179 °.
The linear equation of curve 2 is: (x2-a2)2+(y2+b2)2=552
a2Being the center of circle horizontal coordinate value of curve 2, value is 51；
b2Being the longitudinal 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: (x3-a3)2+(y3+b3)2=562
a3Being the horizontal coordinate value in the center of circle of curve 3, value is 67；
b3Being the longitudinal coordinate value in the center of circle of curve 3, value is 32；
The central angle of curve 3 is 75 °.
Other parts and annexation, operation principle and embodiment 1 are identical.
Embodiment 7
The rear bluff body 4 of the present embodiment be by curve 1 and curve 2, curve 3 according to clockwise end to end become closed curve rotate a circle the rotary body formed around the central shaft of nozzle 1；Wherein:
The linear equation of curve 1 is: (x1-a1)2+(y1-b1)2=92
a1Being the horizontal coordinate value in the center of circle of curve 1, value is 17；
b1Being the longitudinal coordinate value in the center of circle of curve 1, value is 12；
The central angle of curve 1 is 170 °.
The linear equation of curve 2 is: (x2-a2)2+(y2+b2)2=552
a2Being the center of circle horizontal coordinate value of curve 2, value is 48；
b2Being the longitudinal coordinate value in the center of circle of curve 2, value is 21；
The central angle of curve 2 is 74 °.
The linear equation of curve 3 is: (x3-a3)2+(y3+b3)2=562
a3Being the horizontal coordinate value in the center of circle of curve 3, value is 67；
b3Being the longitudinal coordinate value in the center of circle of curve 3, value is 29；
The central angle of curve 3 is 66 °.
Other parts and annexation, operation principle and embodiment 1 are identical.
Embodiment 8
Adjustable plate 5 in above-described embodiment 1～7 can also is that by surface plate and overhead gage 5-2, lower baffle plate 5-3 connects and composes, overhead gage 5-2 and lower baffle plate 5-3 is vertically welded on the side surface that surface plate is relative with rear bluff body 4, and the distribution substantially symmetrical about its central axis about Hydrodynamic cavitation chamber 3, namely overhead gage 5-2 and lower baffle plate 5-3 is horizontally disposed, and surface plate is to reach 6mm along the gap extended radially between its edge and Hydrodynamic cavitation chamber 3 inwall in Hydrodynamic cavitation chamber 3, the distance of surface plate distance Hydrodynamic cavitation chamber 3 water inlet is 60mm, wherein the concrete structure dimensions of overhead gage 5-2 and lower baffle plate 5-3 is identical with corresponding embodiment.
Other parts and annexation thereof, operation principle are identical with corresponding embodiment.
Can also according to actual treatment situation, the diameter suitably adjusting surface plate makes the gap of its distance Hydrodynamic cavitation chamber 3, edge inwall in 5～10mm, the distance of surface plate distance Hydrodynamic cavitation chamber 3 water inlet is within the scope of 55～70mm, it is possible to make cavitation bubble collapse after colliding therewith.
The front bluff body 2 of the present invention, rear bluff body 4 specific design parameter can also be adjusted according to practical situation, be not limited only to above-mentioned enforcement situation.
Claims (4)
1. the equipment of Hydrodynamic Cavitation of a compound bluff body, including Hydrodynamic cavitation chamber (3), the sidepiece in Hydrodynamic cavitation chamber (3) has into water port, water inlet port is provided with nozzle (1), bottom the other end relative with water inlet port, processing has outlet, it is characterized in that: bluff body (2) before being fixed by support bar (7) on throat's central shaft of nozzle (1), the afterbody of front bluff body (2) extends in Hydrodynamic cavitation chamber (3), central shaft is disposed with rear bluff body (4) and adjustable plate (5) in Hydrodynamic cavitation chamber (3)；
Above-mentioned front bluff body (2) is sequentially to be spliced by cone and semiellipsoid, Mosaic face overlaps with the water inlet end face of Hydrodynamic cavitation chamber (3), wherein the cone angle of cone is 15～20 °, cone height is 34～56mm, the curvilinear equation of semiellipsoid is formula (1), with the intersection point of the water inlet end face of Hydrodynamic cavitation chamber (3) and its central shaft for zero, the central shaft in Hydrodynamic cavitation chamber (3) is x-axis, the vertical centrage intersected vertically with x-axis on the water inlet end face in Hydrodynamic cavitation chamber (3) is y-axis, and unit is mm；
Formula (1) is:
In formula (1), m is major semiaxis, and value is 60～70；N is semi-minor axis, and value is 5～7；X is the major axis variable of elliptic curve, x >=0；Y is the short axle variable of elliptic curve；
Above-mentioned rear bluff body (4) is to be rotated a circle the rotary body formed around the central shaft of Hydrodynamic cavitation chamber (3) according to closed curve end to end clockwise by curve 1 and curve 2, curve 3；
The linear equation of curve 1 is:
(x1-a1)2+(y1-b1)2=92
The linear equation of curve 2 is:
(x2-a2)2+(y2+b2)2=552
The linear equation of curve 3 is:
(x3-a3)2+(y3+b3)2=562
Wherein a1Value is 11～17；
b1Value is 8～12；
a2Value is 43～51；
b2Value is 20～23；
a3Value is 59～73；
b3Value 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 °；
Above-mentioned adjustable plate (5) be spherical plate (5-1) or surface plate and rear bluff body (4) just to side inwall on be horizontally disposed with overhead gage (5-2) and lower baffle plate (5-3) along the central axis direction of Hydrodynamic cavitation chamber (3), the centre of sphere of spherical plate (5-1) is on the central shaft of Hydrodynamic cavitation chamber (3), and overhead gage (5-2) and lower baffle plate (5-3) are about substantially symmetrical about its central axis.
2. the equipment of Hydrodynamic Cavitation of compound bluff body according to claim 1, it is characterized in that: the height between described overhead gage (5-2) and lower baffle plate (5-3) is 28～41mm, the central angle of spherical plate (5-1) is 104～113 °, spherical radius is 36.5～44mm, and the spherical crown height formed is 3～5mm.
3. the equipment of Hydrodynamic Cavitation of compound bluff body according to claim 1, it is characterized in that: described overhead gage (5-2) and lower baffle plate (5-3) are 3～6mm apart from the gap of rear bluff body (4), the gap of edge distance Hydrodynamic cavitation chamber (3) inwall of spherical plate (5-1) or surface plate is 5～10mm.
4. the equipment of Hydrodynamic Cavitation of compound bluff body according to claim 1, it is characterised in that: the water inlet end inwall of described Hydrodynamic cavitation chamber (3) is arc surface structure and arc radius is 25～67mm, and central angle is 42～75 °.
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| CN108117131B (en) * | 2017-12-28 | 2020-01-14 | 陕西师范大学 | Concentric vortex tube type acoustic cavitation reactor |
| CN108147498B (en) * | 2017-12-28 | 2020-04-17 | 陕西师范大学 | Acoustic cavitation reactor using multi-tooth vortex type venturi tube |
| CN109718674B (en) * | 2018-12-29 | 2021-07-20 | 陕西师范大学 | Micro-bubble cavitation tank and micro-bubble cavitation method |
| CN109737537B (en) * | 2018-12-29 | 2020-12-25 | 陕西师范大学 | Household moist oxygen-enriched atomization device and method |
| CN109846434B (en) * | 2018-12-29 | 2020-12-25 | 陕西师范大学 | Ozone cavitation disinfection dish washing device and method |
| CN112412759B (en) * | 2020-11-18 | 2022-08-26 | 青岛农业大学 | Mixing, stirring and pumping integrated valveless piezoelectric pump |
| CN114210464B (en) * | 2021-10-26 | 2024-05-14 | 江苏大学 | Venturi tube cavitation strengthening device for mineral floatation |
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| SU1430430A1 (en) * | 1987-03-19 | 1988-10-15 | Украинское научно-производственное объединение целлюлозно-бумажной промышленности | Hydrodynamic cavitation reactor |
| US20110305103A1 (en) * | 2010-06-15 | 2011-12-15 | Mcguire Dennis | Hydrodynamic cavitation device |
| WO2012041360A1 (en) * | 2010-09-27 | 2012-04-05 | Rahul Kashinathrao Dahule | Device for purifying water |
| CN102085461A (en) * | 2010-11-19 | 2011-06-08 | 浙江工业大学 | Combined hydraulic power cavitation device |
| CN202983659U (en) * | 2012-12-26 | 2013-06-12 | 中国船舶重工集团公司第七○二研究所 | Cyclone cavitator |
| CN103896387A (en) * | 2014-03-24 | 2014-07-02 | 陕西师范大学 | Magnetic field and hydrodynamic cavitation combined reaction device |
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