CN207468248U - A kind of shearing Hydrodynamic cavitation generating means - Google Patents
A kind of shearing Hydrodynamic cavitation generating means Download PDFInfo
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- CN207468248U CN207468248U CN201720941522.0U CN201720941522U CN207468248U CN 207468248 U CN207468248 U CN 207468248U CN 201720941522 U CN201720941522 U CN 201720941522U CN 207468248 U CN207468248 U CN 207468248U
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Abstract
The utility model discloses a kind of shearing Hydrodynamic cavitation generating means, which is characterized in that including：Housing for accommodating liquid, is arranged right below liquid outlet, and liquid-inlet is equipped with to surface；Shear cavitation mechanism is arranged on the center of housing, including oblique tooth rotor, inside is along the circumferential direction evenly arranged with radial right angle tooth, and the right angle tooth protrusion sideline is regular square；Straight tooth rotor, inside are along the circumferential direction evenly arranged with radial tilted teeth, and the raised end face of the tilted teeth is tilted a certain angle, wherein straight tooth rotor is oppositely arranged with oblique tooth rotor coaxial, and forms gap between oblique tooth rotor；Driving structure, for oblique tooth rotor and straight tooth rotor to be driven to rotate round about.The utility model has the advantages of reasonable in design, cavitation is efficient.
Description
Technical field
The utility model is related to chemical industry fluid technique technical fields, are filled more particularly to a kind of shearing Hydrodynamic cavitation
It puts.
Background technology
When cavitation refers to that local pressure declines in liquid, liquid internal or liquid consolidate the formation of gas cavities on interface, hair
The process opened up and crumbled and fall.When fluid pressure be down to Liquid saturated vapor it is even following when, 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 restores, cavitation bubble moment crumble and fall to be formed it is micro-
Jet stream and shock wave generate 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
It utilizes, to realize the reinforcing to processes such as chemistry, physics, reaches synergy, energy saving, consumption reduction and other effects.
According to the factor that cavitation generates, it is generally divided into acoustic cavitation, four type of light cavitation, particle cavitation and Hydrodynamic cavitation.
The efficiency and the complexity of engineer application generated due to cavitation, in four kinds of patterns, acoustic cavitation and Hydrodynamic cavitation be academia and
The hot spot 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 the problems such as cavitation field is uneven, and cavitation efficiency declines, and flux is smaller, and amplification difficulty is larger.
For ultrasonic cavitation, Hydrodynamic cavitation equipment is simple, of low cost, can generate large-scale cavitation field, work
The potentiality of industryization application are very big, obtained in the fields such as sterilizing, organic sewage wastewater treatment, jet flow cleaning and chemical separating at present
To application.
Chinese patent 200410021098.5 discloses a kind of bactericidal unit that cavitation is generated by multi-hole orifice, utilizes sky
The instantaneous high-temperature high pressure that generates when occurring is changed to carry out sterilization to liquid charging stock, which has that yield is big, efficient, behaviour
Make convenience, instantaneously sterilising, localized hyperthermia, integral normal temperature the features such as, so as to avoid active ingredient in liquid charging stock destruction with
Cross thermal decomposition.Chinese patent 200410066214.5 disclose it is a kind of can be for technical field of chemical separation convolution cavitation device
Relatively low temperature and be not added with either less plus under conditions of chemical demulsifier to contain water-emulsified oil or emulsified oily watewater carry out it is low
Cost and efficient demulsification processing.It is empty that Chinese patent 201120568210.2 discloses a kind of waterpower for stain disease processing
Makeup is put, which has multiple cavitation cavities, and cavitation is efficient.And ozone can be introduced to cavitation chamber, ozone is in Hydrodynamic cavitation
Under high-temperature and high-pressure conditions caused by effect, the hydroxyl radical free radical with more strong oxidizing property can be resolved into, is further improved
Cavitation efficiency.Catalyst TiO2 and γ Al2O3 in the device can be also set, generate more hydroxyl radical free radicals, further strengthened
The removal effect of organic matter in stain disease.
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 certain physical-chemical reactions.In addition,
Cavitation reactor treating capacity is smaller, more table apparatus is needed to be used in parallel or in series during processing on a large scale, leads to processing system pipeline
Huge structure, complexity, are still difficult to industrial application.
Utility model content
The purpose of this utility model is to be directed to technological deficiency in the prior art, and it is empty to provide a kind of shearing waterpower
Change generating means.
Technical solution is used by realize the purpose of this utility model：
A kind of shearing Hydrodynamic cavitation generating means, including：
Housing for accommodating liquid, is arranged right below liquid outlet, and liquid-inlet is equipped with to surface；
Shear cavitation mechanism is arranged on the center of housing, including,
Oblique tooth rotor, concentric to be arranged in housing, inside is along the circumferential direction evenly arranged with radial right angle tooth, phase
The first groove is formed between two adjacent right angle teeth, the right angle tooth protrusion sideline is regular square；
Straight tooth rotor, concentric to be arranged in housing, inside is along the circumferential direction evenly arranged with radial tilted teeth, phase
The second groove is formed between two adjacent tilted teeths, the raised end face of the tilted teeth is tilted a certain angle, wherein straight tooth rotor
It is oppositely arranged with oblique tooth rotor coaxial, and gap is formed between oblique tooth rotor；
Driving structure, for oblique tooth rotor and straight tooth rotor to be driven to rotate round about.
Preferably, the housing is in cavity cylindrical structure.
Preferably, the liquid-inlet and the concentric setting of liquid outlet.
Preferably, the central shaft of the oblique tooth rotor and straight tooth rotor is packed in the defeated of two motors by shaft coupling respectively
On shaft.
Preferably, the right angle tooth is different from the number of tilted teeth.
Preferably, the inside of the straight tooth rotor is along the circumferential direction evenly arranged with 10-12 right angle tooth, and the oblique tooth turns
The sub side opposite with straight tooth rotor is along the circumferential direction evenly arranged with 11-13 tilted teeth.
Preferably, the oblique tooth rotor is identical with the diameter of straight tooth rotor.
Preferably, be evenly distributed with the radial first outer tooth on the outside of the oblique tooth rotor, and the inner walls with
Oblique tooth rotor is fixed with the first fixation tooth on opposite position, and radial the is evenly distributed on the outside of the straight tooth rotor
Two outer teeth, and the second fixation tooth is fixed on the housing inner wall opposite with straight tooth rotor, when the first outer tooth is tilted teeth
When, first fixes tooth as right angle tooth, and when the first outer tooth is right angle tooth, first fixes tooth as tilted teeth, when the second outer tooth is inclines
During oblique tooth, second fixes tooth as right angle tooth, and when the second outer tooth is right angle tooth, second fixes tooth as tilted teeth.
Preferably, the 0.65-0.95 of a diameter of diameter of the housing of the oblique tooth rotor, a diameter of shell of the oblique tooth rotor
The 0.65-0.95 of body diameter.
The cavitation process of the shearing Hydrodynamic cavitation generating means, includes the following steps：
(1) tiltedly the gap of tooth rotor, straight tooth rotor and housing, cavitation are produced in the rotation most leading edge of right angle tooth and tilted teeth
It is raw；
(2) when the first groove between the tilted teeth of oblique tooth rotor, the second groove between straight tooth rotor right angle tooth are conllinear
When, generate cavitation between the first groove and the second groove；
(3) tiltedly cavitation occurs for the venturi gap between the tilted teeth of tooth rotor and the right angle tooth of straight tooth rotor, and oblique tooth turns
Sub, straight tooth rotor high-speed rotation, causes pressure field quickly to change, and so as to cause device periodically pressure reduction, occurs acute
Strong cavitation.
Compared with prior art, the beneficial effects of the utility model are：
1st, by using straight tooth rotor and oblique tooth rotor, convection current body forms high pressure differential, cuts this Hydrodynamic cavitation generating means
Cut with the various ways such as venturi action, so as to induce multiple spot cavitation, a large amount of vacuole cloud can be generated, to the transport property of vacuole
By force, and low energy consumption, and cavitation is efficient, and liquid flow flux is big, can large-scale promotion use.
2nd, this Hydrodynamic cavitation generating means can be by controlling flow and rotor speed 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.In addition, the Hydrodynamic cavitation
Generating means is simple in structure, of low cost, no high-pressure pump or booster, reliable operation, suitable for large-scale promotion application.
Description of the drawings
Fig. 1 show the structure diagram of the utility model.
Fig. 2 show straight tooth rotor structure schematic diagram.
Fig. 3 show oblique tooth rotor structure schematic diagram.
Fig. 4 show cavitation zone schematic diagram.
Wherein：1- liquid-inlets, 2- liquid outlets, 3- housings, 4- motors, the oblique tooth rotors of 5-, the straight tooth rotors of 6-, 7- right angles
Tooth, the second grooves of 8-, 9- tilted teeths, the first grooves of 10-.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description is only used to explain the utility model, is not used to limit the utility model.
As shown in Figs 1-4, the utility model discloses a kind of shearing Hydrodynamic cavitation generating means, including：
Housing 3 for accommodating liquid, is arranged right below liquid outlet 2, and liquid-inlet 1 is equipped with to surface；
Shear cavitation mechanism, including,
Oblique tooth rotor 5, concentric to be arranged in housing 3, inside is along the circumferential direction evenly arranged with radial right angle tooth
7, the first groove 10 is formed between adjacent two right angle teeth 7, and the right angle tooth protrusion sideline is regular square；
Straight tooth rotor 6, concentric to be arranged in housing 3, inside is along the circumferential direction evenly arranged with radial tilted teeth
9, the second groove 8 is formed between adjacent two tilted teeths, and the raised end face of the tilted teeth is tilted a certain angle, wherein straight tooth
Rotor 6 is coaxially oppositely arranged with oblique tooth rotor 5, and forms gap between oblique tooth rotor 5；
Driving structure for oblique tooth rotor and straight tooth rotor to be driven to rotate round about, cuts fluid so as to be formed
The effect of cutting.
Liquid enters from liquid-inlet 1 in housing 3, gap of the liquid between straight tooth rotor 6 and housing 3, oblique tooth rotor 5
With the gap between housing 3, flowed in the gap formed between straight tooth rotor 6 and tiltedly tooth rotor 5, cavitation occurs.
Preferred scheme, the housing 3 are in cavity cylindrical structure.The liquid-inlet 1 and liquid outlet 2 are concentric
Setting, this setup so that liquid communication is more unobstructed, and cavitation is more efficient.
Preferably, the driving structure be motor 4, institute the oblique tooth rotor and straight tooth rotor central shaft distinguish
It is packed in by shaft coupling on the output shaft of two motors.In axial direction, 3 or so face center opening of housing passes through bearings electricity
Machine shaft, motor 4 are set to housing both sides, oblique tooth rotor 5 and straight tooth rotor 6 are driven to rotate by shaft respectively.
Preferably, the right angle tooth 7 is different from the number of tilted teeth 9, to avoid resonance.The straight tooth rotor
6 inside is along the circumferential direction evenly arranged with 10-12 right angle tooth 7, the oblique tooth rotor 5 side opposite with straight tooth rotor 6
Along the circumferential direction it is evenly arranged with 11-13 tilted teeth 9.
Preferably, the oblique tooth rotor 5 is identical with the diameter of straight tooth rotor 6, can effectively improve cavitation effect
Rate.
Preferably, the radial first outer tooth, and the housing are evenly distributed on the outside of the oblique tooth rotor
The first fixation tooth is fixed on the inner wall position opposite with oblique tooth rotor, radiation is evenly distributed on the outside of the straight tooth rotor
Second outer tooth of shape, and the second fixation tooth is fixed on the housing inner wall opposite with straight tooth rotor, when the first outer tooth is
During tilted teeth, first fixes tooth as right angle tooth, and when the first outer tooth is right angle tooth, first fixes tooth as tilted teeth, outside second
When tooth is tilted teeth, second fixes tooth as right angle tooth, and when the second outer tooth is right angle tooth, the second fixation tooth is tilted teeth.So
First on the outside of oblique tooth rotor or straight tooth rotor fix tooth, second fix tooth high-speed rotation, with being fixedly installed in inner walls
First fixation tooth, the second fixation tooth are interlaced, constantly form Venturi tube structure, violent cavitation occurs.
Preferably, the 0.65-0.95 of a diameter of diameter of the housing of the oblique tooth rotor, the oblique tooth rotor it is straight
Diameter is the 0.65-0.95 of diameter of the housing, within this range, cavitation efficiency highest.
The cavitation process of the shearing Hydrodynamic cavitation generating means, includes the following steps：
(1) gap of oblique tooth rotor 5, straight tooth rotor 6 and housing 3, cavitation is before the rotation most of right angle tooth 7 and tilted teeth 9
Edge generates；
(2) when the first groove 8, the second groove 10 of straight tooth rotor 6 between the tilted teeth of oblique tooth rotor 5 are conllinear,
Cavitation is generated between one groove 8 and the second groove 10；
(3) tiltedly cavitation, oblique tooth occur for the venturi gap between the tilted teeth of tooth rotor 5 and the right angle tooth of straight tooth rotor 6
Rotor 5, straight 6 high-speed rotation of tooth rotor, cause pressure field quickly to change, so as to cause device periodically pressure reduction, hair
Raw violent cavitation.
Specifically, fluid enters from liquid-inlet 1 in housing 3, under the drive of straight tooth rotor 6 and oblique tooth rotor 5, straight
Tooth rotor 6 and tiltedly between the circumferential outer surface of tooth rotor 5 and the inner surface of housing 3 and straight tooth rotor 6 and oblique tooth rotor 5
It is moved in relative gap.Because of the special construction of cavitation apparatus, three parts cavitation can occur for liquid.
First, such as a meanings region in Fig. 4, straight tooth rotor 67 circumferential outer surface of right angle tooth and housing 3 inner surface it
Between the fluid that moves, the fluid moved between 9 circumferential outer surface of tilted teeth of oblique tooth rotor 5 and the inner surface of housing 3, due to
With rotor high-speed rotation, centrifugal force, the shape between the inner surface of right angle tooth 7, the circumferential outer surface of tilted teeth 9 and housing 3 are generated
It is stood into higher hydrostatic pressure.But in the first groove 8, the second groove 10, due to the high-speed rotation of rotor, the first groove 8,
Two grooves, 10 moving surface formed low-pressure area, in this way between 3 inner surface of housing and the first groove 8, the second groove 10 formed compared with
When static pressure is less than liquid saturated vapour pressure at such a temperature, cavitation phenomenon occurs for high pressure differential, oblique tooth rotor 5,
The fore-end of straight 6 rotation direction tooth of tooth rotor generates cavitation bubble.
Second, in oblique tooth rotor 5, straight 6 relative rotational motion of tooth rotor, right angle tooth 7 is periodically common with tilted teeth 9
Line is staggered.Liquid is by the high-pressure extrusion active force of two dental structures, static pressure in the gap of right angle tooth 7 and tilted teeth 9
Highest part in system.When two conllinear teeth are staggered completely, when the first groove 8, the second groove 10 are completely conllinear, groove area shape
Into larger low-pressure area, liquid abruptly enters low-pressure area from higher-pressure region is squeezed, and static pressure reduces, and cavitation potentiality are maximum.Work as static pressure
When value is less than the saturated vapour pressure of liquid at such a temperature, cavitation phenomenon occurs, it is conllinear in oblique tooth rotor 5, straight tooth rotor 6 two
The first groove 8, generate cavitation bubble between the second groove 10, such as b meanings region in Fig. 4.
Third, in oblique tooth rotor 5, straight 6 relative rotational motion of tooth rotor, right angle tooth 7 is periodically common with tilted teeth 9
Line is staggered.Liquid is in the gap of right angle tooth 7 and tilted teeth 9 by the high-pressure extrusion active force of two dental structures.It is in addition, high
Two rotors of speed rotation form the shear action to liquid because viscous effect drives liquid to relatively rotate again.In two teeth
From starting collinearly to during being staggered completely, right angle tooth 7 and the geometry of tilted teeth 9 form Venturi tube structure.It is shearing
Under power and the collective effect of Venturi tube structure, larger low-pressure area is formed between two conllinear teeth, when static pressure is less than liquid
During saturated vapour pressure at such a temperature, cavitation phenomenon occurs, oblique tooth rotor 5,6 two conllinear diastema of straight tooth rotor it
Between generate cavitation bubble, such as c meanings region in Fig. 4.
From the foregoing, it can be seen that cavitation occurs mainly in three regions.First, between oblique tooth rotor 5, straight tooth rotor 6 and housing 3
Gap, cavitation are generated in the rotation most leading edge of right angle tooth 7 and tilted teeth 9；Second, the first groove 8, straight tooth when oblique tooth rotor 5 turn
When second groove 10 of son 6 is conllinear, cavitation can be generated between the groove of rotor；Third, oblique tooth rotor 5, straight tooth rotor 6 tooth it
Between venturi gap cavitation can occur.Oblique tooth rotor 5, straight tooth rotor 6 high-speed rotation under the driving of motor 4, lead to pressure
The quick variation in field, so as to cause device periodically pressure reduction, occurs violent cavitation phenomenon.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, under the premise of the utility model principle is not departed from, several improvements and modifications can also be made, these change
The scope of protection of the utility model is also should be regarded as into retouching.
Claims (9)
1. a kind of shearing Hydrodynamic cavitation generating means, which is characterized in that including：
Housing for accommodating liquid, is arranged right below liquid outlet, and liquid-inlet is equipped with to surface；
Shear cavitation mechanism is arranged on the center of housing, including,
Oblique tooth rotor, inside are along the circumferential direction evenly arranged with radial right angle tooth, and the right angle tooth protrusion sideline is rule
Then square；
Straight tooth rotor, inside is along the circumferential direction evenly arranged with radial tilted teeth, the raised end slope of the tilted teeth
Certain angle wherein straight tooth rotor is oppositely arranged with oblique tooth rotor coaxial, and forms gap between oblique tooth rotor；
Driving structure, for oblique tooth rotor and straight tooth rotor to be driven to rotate round about.
2. a kind of shearing Hydrodynamic cavitation generating means according to claim 1, which is characterized in that the housing is in cavity
Cylindrical structure.
3. a kind of shearing Hydrodynamic cavitation generating means according to claim 1, which is characterized in that the liquid-inlet with
The concentric setting of liquid outlet.
4. a kind of shearing Hydrodynamic cavitation generating means according to claim 1, which is characterized in that the driving structure is
The central shaft of motor, the oblique tooth rotor and straight tooth rotor is packed on the output shaft of two motors respectively by shaft coupling.
5. a kind of shearing Hydrodynamic cavitation generating means according to claim 1, which is characterized in that the right angle tooth is with inclining
The number of oblique tooth is different.
6. a kind of shearing Hydrodynamic cavitation generating means according to claim 1, which is characterized in that the straight tooth rotor
Inside is along the circumferential direction evenly arranged with 10-12 right angle tooth, and the oblique tooth rotor side opposite with straight tooth rotor is circumferentially
Direction is evenly arranged with 11-13 tilted teeth.
7. a kind of shearing Hydrodynamic cavitation generating means according to claim 1, which is characterized in that the oblique tooth rotor with
The diameter of straight tooth rotor is identical.
8. a kind of shearing Hydrodynamic cavitation generating means according to claim 1, which is characterized in that the oblique tooth rotor
Outside is evenly distributed with the radial first outer tooth, and is fixed on the inner walls position opposite with oblique tooth rotor
One fixes tooth, and the radial second outer tooth, and the housing and straight tooth rotor phase are evenly distributed on the outside of the straight tooth rotor
To inner wall on be fixed with the second fixation tooth；
When the first outer tooth is tilted teeth, first fixes tooth as right angle tooth, and when the first outer tooth is right angle tooth, the first fixation tooth is
Tilted teeth, when the second outer tooth is tilted teeth, second fixes tooth as right angle tooth, and when the second outer tooth is right angle tooth, second fixes
Tooth is tilted teeth.
9. a kind of shearing Hydrodynamic cavitation generating means according to claim 2, which is characterized in that the oblique tooth rotor
The 0.65-0.95 of a diameter of diameter of the housing.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107265562A (en) * | 2017-07-31 | 2017-10-20 | 核工业理化工程研究院 | A kind of shearing Hydrodynamic cavitation generating means and Hydrodynamic cavitation process |
| CN109205696A (en) * | 2018-08-31 | 2019-01-15 | 江苏大学 | A kind of novel cavitation apparatus |
| CN109824176A (en) * | 2019-03-30 | 2019-05-31 | 山东大学 | A kind of device of Hydrodynamic cavitation combined oxidant degradation of dye waste water |
| CN109824173A (en) * | 2019-03-30 | 2019-05-31 | 山东大学 | A kind of organic wastewater three-level waterpower cavitation process system |
| CN109821434A (en) * | 2019-03-30 | 2019-05-31 | 山东大学 | Micro-bubble generation device under a kind of lower-speed state |
| CN115504529A (en) * | 2022-09-29 | 2022-12-23 | 江苏大学 | High-efficient cavitation broken wall generating device |
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2017
- 2017-07-31 CN CN201720941522.0U patent/CN207468248U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107265562A (en) * | 2017-07-31 | 2017-10-20 | 核工业理化工程研究院 | A kind of shearing Hydrodynamic cavitation generating means and Hydrodynamic cavitation process |
| CN109205696A (en) * | 2018-08-31 | 2019-01-15 | 江苏大学 | A kind of novel cavitation apparatus |
| CN109824176A (en) * | 2019-03-30 | 2019-05-31 | 山东大学 | A kind of device of Hydrodynamic cavitation combined oxidant degradation of dye waste water |
| CN109824173A (en) * | 2019-03-30 | 2019-05-31 | 山东大学 | A kind of organic wastewater three-level waterpower cavitation process system |
| CN109821434A (en) * | 2019-03-30 | 2019-05-31 | 山东大学 | Micro-bubble generation device under a kind of lower-speed state |
| CN115504529A (en) * | 2022-09-29 | 2022-12-23 | 江苏大学 | High-efficient cavitation broken wall generating device |
| CN115504529B (en) * | 2022-09-29 | 2023-11-10 | 江苏大学 | High-efficient cavitation broken wall generating device |
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