CN108722621B - Ultrasonic resonance crushing device and method - Google Patents
Ultrasonic resonance crushing device and method Download PDFInfo
- Publication number
- CN108722621B CN108722621B CN201810294943.8A CN201810294943A CN108722621B CN 108722621 B CN108722621 B CN 108722621B CN 201810294943 A CN201810294943 A CN 201810294943A CN 108722621 B CN108722621 B CN 108722621B
- Authority
- CN
- China
- Prior art keywords
- resonance
- hollow cavity
- resonance tube
- amplitude transformer
- annular gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 68
- 239000000463 material Substances 0.000 claims abstract description 42
- 238000002347 injection Methods 0.000 claims description 29
- 239000007924 injection Substances 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000012141 concentrate Substances 0.000 abstract description 2
- 238000002309 gasification Methods 0.000 abstract description 2
- 238000009700 powder processing Methods 0.000 abstract description 2
- 239000011344 liquid material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B3/02—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency involving a change of amplitude
Abstract
The invention belongs to the technical field of wet micro powder processing, and particularly relates to an ultrasonic resonance crushing device and method. The ultrasonic resonance crushing device comprises an amplitude transformer (1), a feed liquid sleeve (2), a resonance tube (5) and an end plug. The device concentrates the energy output by the energy source in a limited airspace, improves the density and the energy quality of the acoustic energy flow, and provides a high-order energy source for crushing. According to the method, the intrinsic working frequency of the hollow cavity of the resonant tube (5) is matched with an ultrasonic sound source, the sound pressure of the resonant tube can form a uniform and stable standing wave distribution form, and stable positive and negative pressure working conditions are provided for the formation of cavitation effect. The method can realize the control of the material crushing effect and the improvement of the energy utilization efficiency. When the method is used for crushing, the material is cooled, so that the liquid gasification and the generation of unstable bubbles at low pressure of a sound field can be reduced, and the ineffective conversion and absorption of cavitation impact energy can be reduced.
Description
Technical Field
The invention belongs to the technical field of wet micro powder processing, and particularly relates to an ultrasonic resonance crushing device and method.
Background
In general, primary crushing of the raw materials is required for micro-crushing and ultra-micro-crushing. The primary crushed raw material has smaller size, and the traditional mechanical crushing method is difficult to directly apply mechanical force to the material particles to form effective micro-powder-level crushing.
Ultrasonic crushing is a process of crushing materials by using ultrasonic energy. The crushing principle comprises the following steps: applying pulling and pressing acting force to material particles in a medium by positive and negative alternating sound pressure fields formed by ultrasonic propagation in the medium, wherein frequent alternating stress can lead to fatigue and crushing of the particles; when the ultrasonic frequency is consistent with the resonance frequency of the material particles, the particles can be excited to resonate, so that the energy is agitated, and the material particles are caused to resonate and crush; the ultrasonic cavitation causes the cavitation (unsteady micro-bubbles) at the low pressure of the sound field to form and the cavitation at the high pressure to collapse, and the high-strength cavitation wall impact force generated during the collapse of the cavitation causes the crushing or fatigue crushing of the material particles. This principle is widely used in micro-comminution processes as an important method of acoustic energy conversion and utilization.
Ultrasonic crushing generally adopts a single frequency treatment mode, and when the frequency is determined, the peak Gu Yacha pair of the sound pressure amplitude in the crushing field can strengthen the three crushing energies, so that the utilization rate of sound energy is effectively improved.
A common technical method for increasing the sound pressure amplitude peak Gu Yacha in the existing ultrasonic crushing is to increase the vibration amplitude of the ultrasonic sound source. The specific measures include: increasing the horn input power or configuring a large amplitude horn.
The disadvantages of the above technical measures are as follows: 1) The energy lifting measures are simple and extensive. Increasing the electrical power to the input power source and configuring the amplitude horn increases the overall energy supply, but the cost of increasing the energy efficiency ratio increases substantially, and the increase in acoustic energy amplitude is limited. 2) The energy distribution control measures are lacking. The existing ultrasonic energy-introduced liquid cavity is usually an open or closed space with random shape, lacks space distribution planning of acoustic energy density, disperses acoustic energy and has poor crushing quality. 3) The energy transfer and effective conversion efficiency is low, and the cavitation energy utilization rate is not high. When the energy intensity of the ultrasonic source is larger than a certain threshold range, the cavitation field is concentrated near the end of the amplitude transformer to form a cavitation shielding phenomenon, so that the transmission of sound waves to a far field is hindered; the generation of stable bubbles causes the temperature of the feed liquid to rise, and the near-field energy consumption is caused. 4) The movement of the feed liquid in the energy field lacks active, efficient control. The batch processing mode lacks effective energy absorption, utilization and control, and the acoustic energy in the materials is accumulated randomly, so that the crushing process and the particle size controllability of the product are poor.
Disclosure of Invention
The invention aims to provide an ultrasonic resonance crushing method, which utilizes the cavitation effect of ultrasonic waves to provide high-intensity impact energy and greatly improves energy efficiency and crushing efficiency.
Another object of the present invention is to provide an apparatus for ultrasonic resonance disintegration using the above method.
The invention aims at realizing the following technical scheme:
the ultrasonic resonance crushing device comprises an amplitude transformer 1, a feed liquid sleeve 2, a resonance tube 5 and an end plug.
The amplitude transformer 1 comprises a top 101, a rod body 102 and a head 103 from top to bottom; the top 101 is connected with an ultrasonic transducer, and the cross section of the lower end of the end head 103 is an amplitude transformer end face 4.
The feed liquid sleeve 2 is the cylinder that has the cavity, and the lower extreme lateral wall of feed liquid sleeve 2 is equipped with discharge gate 11, discharge gate 11 and the cavity intercommunication of feed liquid sleeve 2.
The resonance tube 5 is a cylinder with a hollow cavity in the middle.
The amplitude transformer 1 passes through the hollow cavity of the feed liquid sleeve 2, and the end 103 of the amplitude transformer extends into the hollow cavity of the resonance tube 5; a discharge annular gap 10 is reserved between the end 103 of the amplitude transformer 1 and the inner wall of the hollow cavity of the resonance tube 5; when in installation, the amplitude transformer 1, the feed liquid sleeve 2 and the hollow cavity of the resonance tube 5 are coaxial.
The end plug is arranged at the lower end of the resonance tube 5; the end plug is provided with a feed inlet, so that feed liquid enters the hollow cavity of the resonance tube 5.
The end plug is a central micro-hole end plug 7, and the feed inlet is a feed hole 9.
The central micro-hole end plug 7 comprises a fixed end and a feeding end; the stiff end is equipped with the plane recess, and the middle part of recess is equipped with central micropore boss 8, and the feed end is equipped with feed port 9, feed port 9 runs through feed end and central micropore boss 8.
The plane groove of the fixed end is matched with the lower end of the resonance tube 5, the central micropore boss 8 corresponds to the hollow cavity of the resonance tube 5, and when the fixed end of the central micropore end plug 7 is connected with the lower end of the resonance tube 5, the central micropore boss 8 is positioned in the hollow cavity of the resonance tube 5; at this time, the hollow cavity of the resonance tube 5 between the upper surface of the central micropore boss 8 and the end surface 4 of the amplitude transformer is a central micropore hard wall surface resonance depth zone 6; the outer diameter of the cross section of the center micropore boss 8 is the same as the diameter of the cross section of the hollow cavity of the resonance tube 5; the ratio of the cross-sectional area of the hollow cavity of the resonator tube 5 to the cross-sectional area of the feed hole 9 is 50 or more; the length of the resonance depth zone 6 of the hard wall surface of the central micropore is 1/2 of the wavelength of the resonance wave.
The end plugs are circumferential annular gap end plugs 13, and the feed inlet is a T-shaped feed hole 15.
The circumferential annular gap end plug 13 comprises a fixed end and a feeding end; the fixed end is provided with a planar groove, and the middle part of the groove is provided with a circumferential annular boss 14; the feed end is provided with a T-shaped feed hole 15, the T-shaped feed hole 15 comprises a horizontal hole and a vertical hole, wherein the horizontal hole radially penetrates through the circumferential annular boss 14 and is positioned at the bottom of the circumferential annular boss, and the vertical hole is communicated with the lower surface of the horizontal hole and the lower surface of the feed end.
The plane groove of the fixed end is matched with the lower end of the resonance tube 5, and the circumferential annular boss 14 corresponds to the hollow cavity of the resonance tube 5; when the fixed end of the circumferential annular gap end plug 13 is connected with the lower end of the resonance tube 5, the circumferential annular gap boss 14 is positioned in the hollow cavity of the resonance tube 5, and a circumferential annular gap 16 is formed between the outer circumference of the circumferential annular gap boss 14 and the inner wall of the hollow cavity of the resonance tube 5; at this time, the hollow cavity of the resonance tube 5 between the upper surface of the circumferential annular gap boss 14 and the end surface 4 of the amplitude transformer is a circumferential annular gap hard wall surface resonance depth zone 12; the cross section diameter of the circumferential annular boss 14 is the same as the cross section diameter of the end face 4 of the amplitude transformer; the ratio of the cross-sectional area of the hollow cavity of the resonator tube 5 to the cross-sectional area of the vertical hole of the "T" -shaped feed hole 15 is 50 or more; the length of the resonant depth 12 of the circumferential annular gap hard wall surface is 1/2 of the wavelength of the resonant wave.
The end plug is an acoustic cavity end plug 18, and the feed inlet is an acoustic cavity feed hole 20.
The sound volume cavity end plug 18 comprises a fixed end, a sound volume cavity 19 and a feeding end; the feeding end is provided with an acoustic cavity feeding hole 20, and the acoustic cavity feeding hole 20 is communicated with the acoustic cavity 19; when the fixed end of the sound-containing cavity end plug 18 is connected with the lower end of the resonance tube 5, the sound-containing cavity 19 is communicated with the hollow cavity of the resonance tube 5; at this time, the hollow cavity of the resonance tube 5 below the end face 4 of the amplitude transformer is a sound volume soft wall surface resonance depth area 17; the ratio of the cross-sectional area of the sound-containing cavity 19 to the cross-sectional area of the hollow cavity of the resonator tube 5 is 50 or more; the length of the sound-volume soft wall surface resonance depth region 17 is 3/4 of the wavelength of the resonance wave.
The lengths of the central micropore boss 8 and the circumferential annular gap end blocking boss 14 extending into the hollow cavity of the resonance tube 5 are 10-12 mm; the lengths of the central micropore hard wall surface resonance depth zone 6 and the circumferential annular space hard wall surface resonance depth zone 12 are 37mm.
The amplitude transformer 1 is a multi-section combined composite amplitude transformer, and the end head is a constant-section cylindrical rod.
The diameter of the end face 4 of the amplitude transformer is 8-10 mm.
The radial width of the discharge annulus 10 is greater than the feed particle size.
The cross section diameter of the hollow cavity of the resonance tube 5 is 8.2-10.2 mm; the diameter of the discharge hole 11 is 1-2 mm.
A method of ultrasonic resonance disruption using an ultrasonic resonance disruption device, comprising the steps of:
in use, the resonator tubes 5 are arranged vertically with the ultrasound transducer at the highest point.
a) And setting the material injection quantity and the material injection interval time of each time of the material injection pump according to the requirement of receiving energy and the range of the high sound pressure interval.
The injection form is a constant volume pulse form, and the injection volume of each pulse injection period is the cross-sectional area of the hollow cavity of the resonance tube 5 multiplied by 1/8 wavelength.
The injection quantity is 0.5-2 ml, and the injection interval time is 1-2 s.
b) The temperature of the feed liquid 3 is regulated so that the temperature of the feed liquid entering the hollow cavity of the resonance tube 5 is lower than 15 ℃.
c) And injecting material into the hollow cavity of the resonance tube 5 through the feed inlet of the end plug, so that the hollow cavity of the resonance tube 5 is filled with the material liquid.
d) Inserting the amplitude transformer 1 into the feed liquid sleeve 2, and immersing the end face 4 of the amplitude transformer into the hollow cavity of the resonance tube 5 filled with feed liquid 3; ensuring that the amplitude transformer 1, the feed liquid sleeve 2 and the hollow cavity of the resonance tube 5 are coaxial; the end face 4 of the amplitude transformer 1 is parallel to the wall face of the port of the hollow cavity of the resonance tube 5.
e) And injecting materials into the hollow cavity of the resonance tube 5 by using a material injection pump.
f) The amplitude transformer 1 is connected with an ultrasonic transducer, the ultrasonic transducer is started, and the amplitude transformer 1 is driven to carry out amplitude gain and energy transmission.
The amplitude variation multiple of the amplitude transformer 1 is more than 10.
g) The end face 4 of the amplitude transformer breaks the feed liquid in the hollow cavity of the resonance tube 5, and the broken feed liquid 3 enters the feed liquid sleeve 2 through the discharge annular gap 10.
h) After the crushing, the treated feed liquid 3 flowing out from the discharge port 11 is collected and fine particles are separated.
The invention has the beneficial effects that:
1) The ultrasonic resonance crushing device concentrates the energy output by the energy source in a limited airspace, improves the acoustic energy flow density and the energy quality, and provides a high-order energy source for crushing.
2) The end plugs of the ultrasonic resonance crushing device comprise three types, and different end plug types can be selected according to different requirements during use.
3) According to the ultrasonic resonance crushing method, the intrinsic working frequency of the hollow cavity of the resonant tube is matched with the ultrasonic sound source, the sound pressure can form a uniform and stable standing wave distribution form, and stable positive and negative pressure working conditions are provided for the formation of cavitation effect.
4) According to the ultrasonic resonance crushing method, the liquid material can be stopped in a high sound pressure area in a constant volume and pulsation material injection mode, and high-order energy after resonance and convergence is efficiently absorbed, converted and utilized; by means of the acoustic mode control of the constant volume sound field and the matching of the constant volume and pulse material injection modes, the control of the material crushing effect and the improvement of the energy utilization efficiency can be realized.
5) When the ultrasonic resonance crushing method is used, the material is cooled, so that the liquid gasification and the generation of unstable bubbles at low pressure of a sound field can be reduced, and the ineffective conversion and absorption of cavitation impact energy can be reduced.
Drawings
FIG. 1 is a cross-sectional view of an ultrasonic resonance disintegration apparatus of the present invention with a center microporous end plug;
FIG. 2 is a cross-sectional view of an ultrasonic resonance disintegration apparatus of the present invention with a circumferential annular end plug;
FIG. 3 is a cross-sectional view of an ultrasonic resonance crushing device with an end plug being an acoustic cavity end plug of the present invention;
FIG. 4 is a schematic view of a feed liquid sleeve of the ultrasonic resonance crushing device of the invention;
FIG. 5 is a schematic view of the resonant tube structure of the ultrasonic resonance crushing device of the present invention;
FIG. 6 is a schematic diagram of the structure of the end plug of the central micropore of the ultrasonic resonance crushing device;
FIG. 7 is a schematic view of the circumferential annular gap end plug structure of the ultrasonic resonance crushing device of the present invention;
fig. 8 is a schematic diagram of the end plug structure of the sound volume cavity of the ultrasonic resonance crushing device.
Wherein, the reference numerals are as follows:
1 amplitude transformer 2 feed liquid sleeve
3 feed liquid 4 amplitude transformer end face
Resonance depth zone of 5 resonance tube 6 center micropore hard wall surface
7 center micropore end plugs 8 center micropore boss
9 feed holes 10 discharge annular gap
Hard wall resonance depth zone of Xiang Huanxi at 12 weeks of 11 discharge holes
13 circumferential annular gap end plug 14 circumferential annular gap end plug boss
15T-shaped feeding hole 16 circumferential annular gap
17 sound volume soft wall resonance depth zone 18 sound volume cavity end plug
19 sound volume chamber 20 sound volume chamber feed port
101 top 102 rod body
103 end
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples.
As shown in fig. 1 to 3, the ultrasonic resonance crushing device comprises an amplitude transformer 1, a feed liquid sleeve 2, a resonance tube 5 and an end plug.
The amplitude transformer 1 comprises a top 101, a rod body 102 and a head 103 from top to bottom; the top 101 is connected with an ultrasonic transducer, and the cross section of the lower end of the end head 103 is an amplitude transformer end face 4.
As shown in fig. 4, the feed liquid sleeve 2 is a cylinder with a hollow cavity, and includes an upper end and a lower end. The lower extreme lateral wall of feed liquid sleeve 2 is equipped with discharge gate 11, discharge gate 11 and the cavity intercommunication of feed liquid sleeve 2.
As shown in fig. 5, the resonance tube 5 is a cylinder with a hollow cavity in the middle, and is mounted at the lower end of the feed liquid sleeve 2.
The amplitude transformer 1 passes through the hollow cavity of the feed liquid sleeve 2, and the end 103 of the amplitude transformer extends into the hollow cavity of the resonance tube 5. A discharge annular gap 10 is reserved between the end 103 of the amplitude transformer 1 and the inner wall of the hollow cavity of the resonance tube 5. When in installation, the amplitude transformer 1, the feed liquid sleeve 2 and the hollow cavity of the resonance tube 5 are coaxial.
The end plug is arranged at the lower end of the resonance tube 5, and is provided with a feed inlet, so that feed liquid enters the hollow cavity of the resonance tube 5.
The end plug is one of a central micro-hole end plug 7, a circumferential annular gap end plug 13 and an acoustic cavity end plug 18; the feed inlet and the end plug are respectively provided with a feed hole 9, a T-shaped feed hole 15 and a sound cavity feed hole 20 in sequence.
FIG. 1 is a cross-sectional view of an ultrasonic resonance disintegration apparatus with a center microporous end plug according to the present invention. As shown in fig. 1 and 6, the central microporous end plug 7 includes a fixed end and a feed end. The stiff end is equipped with the plane recess, and the middle part of recess is equipped with central micropore boss 8, and the feed end is equipped with feed port 9, feed port 9 runs through feed end and central micropore boss 8.
The plane groove of the fixed end is matched with the lower end of the resonance tube 5, and the center micropore boss 8 corresponds to the hollow cavity of the resonance tube 5. When the fixed end of the central micropore end plug 7 is connected with the lower end of the resonance tube 5, the central micropore boss 8 is positioned in the hollow cavity of the resonance tube 5. At this time, the hollow cavity of the resonance tube 5 between the upper surface of the center micropore boss 8 and the amplitude transformer end face 4 is the center micropore hard wall surface resonance depth zone 6. The outer circumference of the center micropore boss 8 is tightly matched with the inner wall of the hollow cavity of the resonance tube 5. The ratio of the cross-sectional area of the hollow cavity of the resonator tube 5 to the cross-sectional area of the feed hole 9 is 50 or more. The length of the resonance depth zone 6 of the hard wall surface of the central micropore is 1/2 of the wavelength of the resonance wave.
Fig. 2 is a cross-sectional view of an ultrasonic resonance disintegration apparatus of the present invention with a circumferential annular end plug. As shown in fig. 2 and 7, the circumferential annular end block 13 includes a fixed end and a feed end. The fixed end is provided with a planar groove, and the middle part of the groove is provided with a circumferential annular boss 14; the feed end is provided with a T-shaped feed hole 15, the T-shaped feed hole 15 comprises a horizontal hole and a vertical hole, wherein the horizontal hole radially penetrates through the circumferential annular boss 14 and is positioned at the bottom of the circumferential annular boss, and the vertical hole is communicated with the lower surface of the horizontal hole and the lower surface of the feed end. The plane groove of the fixed end is matched with the lower end of the resonance tube 5, and the circumferential annular boss 14 corresponds to the hollow cavity of the resonance tube 5. When the fixed end of the circumferential annular gap end plug 13 is connected with the lower end of the resonance tube 5, the circumferential annular gap boss 14 is positioned in the hollow cavity of the resonance tube 5, and a circumferential annular gap 16 is formed between the outer circumference of the circumferential annular gap boss 14 and the inner wall of the hollow cavity of the resonance tube 5. At this time, the hollow cavity of the resonance tube 5 between the upper surface of the circumferential annular space boss 14 and the horn end surface 4 is the circumferential annular space hard wall surface resonance depth zone 12. The outer circumference of the circumferential annular boss 14 is in clearance fit with the inner wall of the hollow cavity of the resonant tube 5. The ratio of the cross-sectional area of the hollow cavity of the resonator tube 5 to the cross-sectional area of the vertical hole of the "T" shaped feed hole 15 is 50 or more. The length of the resonant depth 12 of the circumferential annular gap hard wall surface is 1/2 of the wavelength of the resonant wave.
Fig. 3 is a cross-sectional view of an ultrasonic resonance crushing device with an end plug being an end plug of a sound volume cavity. As shown in fig. 3 and 8, the sound-volume chamber end plug 18 includes a fixed end, a sound-volume chamber 19, and a feeding end. The feed end is provided with an acoustic cavity feed hole 20, and the acoustic cavity feed hole 20 is communicated with the acoustic cavity 19. When the fixed end of the sound-containing cavity end plug 18 is connected with the lower end of the resonance tube 5, the sound-containing cavity 19 is communicated with the hollow cavity of the resonance tube 5. At this time, the hollow cavity of the resonance tube 5 below the horn end face 4 is the sound-containing soft wall resonance depth zone 17. The ratio of the cross-sectional area of the sound-containing chamber 19 to the cross-sectional area of the hollow chamber of the resonator tube 5 is 50 or more. The length of the sound-volume soft wall surface resonance depth region 17 is 3/4 of the wavelength of the resonance wave.
The lengths of the central micropore hard wall surface resonance depth zone 6 and the circumferential annular space hard wall surface resonance depth zone 12 are 37mm.
Preferably, the amplitude transformer 1 is a multi-section combined composite amplitude transformer, and the end head is a cylindrical rod with a constant cross section.
Preferably, the diameter of the end face 4 of the amplitude transformer is 8-10 mm.
Preferably, the radial width of the discharge annulus 10 is greater than the feed particle size.
Preferably, the cross section diameter of the hollow cavity of the resonance tube 5 is 8.2-10.2 mm; the diameter of the discharge hole 11 is 1-2 mm.
Preferably, the length of the central micropore boss 8 or the circumferential annular gap end blocking boss 14 extending into the hollow cavity of the resonance tube 5 is 10-12 mm.
The ultrasonic resonance crushing method comprises the following steps:
in use, the resonator tubes 5 are arranged vertically with the ultrasound transducer at the highest point.
a) Setting the material injection quantity and the material injection interval time of each time of a material injection pump according to the requirement of receiving energy and the width of a high sound pressure interval;
the injection form is a constant volume pulse form, and the injection volume of each pulse injection period is the cross-sectional area of the hollow cavity of the resonance tube 5 multiplied by 1/8 wavelength.
Preferably, the injection amount is 0.5-2 ml, and the injection interval time is 1-2 s;
b) The temperature of the feed liquid 3 is regulated to enable the temperature of the feed liquid entering the hollow cavity of the resonance tube 5 to be lower than 15 ℃;
c) Filling material into the hollow cavity of the resonance tube 5 through the feed inlet of the end plug, so that the hollow cavity of the resonance tube 5 is filled with material liquid;
the type of the end plugs is selected according to actual requirements, namely one of the central micro-hole end plugs 7, the circumferential annular gap end plugs 13 and the sound volume cavity end plugs 18 is selected.
The hollow cavity of the resonance tube 5 is filled with feed liquid through the feed hole 9, the T-shaped feed hole 15 or the sound-volume cavity feed hole 20;
d) Inserting the amplitude transformer 1 into the feed liquid sleeve 2, and immersing the end face 4 of the amplitude transformer into the hollow cavity of the resonance tube 5 filled with feed liquid 3; ensuring that the amplitude transformer 1, the feed liquid sleeve 2 and the hollow cavity of the resonance tube 5 are coaxial; the end face 4 of the amplitude transformer 1 is parallel to the wall face of the port of the hollow cavity of the resonance tube 5.
When the bottom of the hollow cavity of the resonance tube 5 is a central micro-hole end plug 7 or a circumferential annular gap end plug 13, a boundary resonance depth zone of the hard wall surface is formed; when the bottom of the hollow cavity of the resonance tube 5 is the sound volume cavity end plug 18, a soft wall boundary resonance depth zone is formed.
When the bottom of the hollow cavity of the resonator tube 5 is the circumferential annular gap end plug 13, a circumferential annular gap 16 is formed between the outer circumference of the circumferential annular gap end plug boss 14 and the inner wall of the hollow cavity of the resonator tube 5.
e) Injecting materials into the hollow cavity of the resonance tube 5 by using a material injection pump;
f) Connecting the amplitude transformer 1 with an ultrasonic transducer, starting the ultrasonic transducer, and enabling the ultrasonic transducer to drive the amplitude transformer 1 to carry out amplitude gain and energy transmission;
the amplitude variation multiple of the amplitude transformer 1 is more than 10.
g) The end face 4 of the amplitude transformer breaks the feed liquid in the hollow cavity of the resonance tube 5, and the broken feed liquid 3 enters the feed liquid sleeve 2 through the discharge annular gap 10.
h) After the crushing, the treated feed liquid 3 flowing out from the discharge port 11 is collected and fine particles are separated.
The ultrasonic transducer is connected with a modulation power supply, the power supply frequency of the modulation power supply is 20kHz, the output power is adjustable, and the output power is 0-200W.
The feed liquid comprises a material to be crushed and a material carrying medium, wherein the material carrying medium is pure water.
The principle of the ultrasonic resonance crushing method is that ultrasonic energy is continuously guided into the hollow cavity of the resonance tube 5 with a specific structure by utilizing an ultrasonic resonance crushing device, the sound pressure amplitude in the hollow cavity of the resonance tube 5 is improved by utilizing the oscillation and gain of the energy in the hollow cavity, a larger peak Gu Fuzhi pressure difference is formed, a high-magnitude and high-density ultrasonic energy field is generated, pulsating liquid material is timely guided, and efficient energy conversion and absorption are carried out in the process of the liquid material flowing through the resonance tube cavity, so that high-intensity crushing energy supply is provided for micronization. The method utilizes cavitation effect of ultrasonic wave to provide high-intensity impact energy, and the ultrasonic wave becomes an optional effective energy supply form because of a certain field energy distribution form. The ultrasonic energy collecting and accumulating device can collect and accumulate ultrasonic energy on the basis of high energy level, and can realize the adjustable and controllable energy density in unit volume of liquid material, so that the conversion and utilization of ultrasonic energy can be improved, high-quality crushing energy is formed, the comprehensive improvement of energy efficiency and crushing efficiency is realized, and the requirements on the ultrasonic energy supply form and the manufacturing cost and operation consumption of equipment are effectively reduced.
The three different end plugs of the ultrasonic resonance crushing device have different characteristics and can be selected according to requirements.
When the central micro-hole end plug 7 is used, the hollow cavity of the resonance tube 5 is filled with materials through the feeding hole 9. The central micropore end plug 7 is a loss piece, has a simple structure, and the feed liquid obtains the impact energy strengthening crushing effect at the hard wall surface, and has the defect that after the wall surface is subjected to continuous cavitation and impact action, the size of a feed hole 9 on a central micropore boss 8 is changed, so that the feed amount is increased.
When the circumferential annular gap end plug 13 is used, feed liquid enters the hollow cavity of the resonance tube 5 through the T-shaped feed hole 15 and the circumferential annular gap 16. The circumferential annular end plugs 13 are lossy members. The method ensures that the feed liquid can acquire impact energy at the hard wall surface to strengthen the crushing effect. Since the "T" shaped feed hole 15 is not directly impacted, its size is not changed. The wall surface is damaged by continuous cavitation and impact, the structure is complex, and the material liquid is not easy to clean when being blocked.
When the sound-volume cavity end plug 18 is used, the material liquid fills the sound-volume cavity 19 through the sound-volume cavity feeding hole 20 and then enters the hollow cavity of the resonance tube 5. The sound volume cavity end plug 18 is a non-loss part, has a simple structure, and can effectively improve the utilization efficiency of sound energy by totally reflecting sound energy at the boundary of the sound volume soft wall surface resonance depth region 17. The end plugs are not impacted and cavitated. The disadvantage is that the boundary of the resonance depth region 17 of the sound volume soft wall surface has no impact energy strengthening effect and the crushing energy is lost.
Claims (8)
1. Ultrasonic resonance breaker, its characterized in that: comprises an amplitude transformer (1), a feed liquid sleeve (2), a resonance tube (5) and an end plug;
the amplitude transformer (1) comprises a top (101), a rod body (102) and an end (103) from top to bottom; the top (101) is connected with an ultrasonic transducer, and the cross section of the lower end of the end head (103) is an amplitude transformer end face (4);
the feed liquid sleeve (2) is a cylinder with a hollow cavity, a discharge hole (11) is formed in the side wall of the lower end of the feed liquid sleeve (2), and the discharge hole (11) is communicated with the hollow cavity of the feed liquid sleeve (2);
the resonance tube (5) is a cylinder with a hollow cavity in the middle;
the amplitude transformer (1) passes through the hollow cavity of the feed liquid sleeve (2), and the end (103) of the amplitude transformer stretches into the hollow cavity of the resonance tube (5); a discharge annular gap (10) is reserved between the end head (103) of the amplitude transformer (1) and the inner wall of the hollow cavity of the resonance tube (5); when in installation, the amplitude transformer (1), the feed liquid sleeve (2) and the hollow cavity of the resonance tube (5) are coaxial;
the end plug is arranged at the lower end of the resonance tube (5); the end plug is provided with a feed inlet, so that feed liquid enters the hollow cavity of the resonance tube (5); the end plug is a central micro-hole end plug (7), and the feed inlet is a feed hole (9);
the central micro-hole end plug (7) comprises a fixed end and a feeding end; the fixed end is provided with a plane groove, the middle part of the groove is provided with a central micropore boss (8), the feeding end is provided with a feeding hole (9), and the feeding hole (9) penetrates through the feeding end and the central micropore boss (8);
the plane groove of the fixed end is matched with the lower end of the resonance tube (5), the central micropore boss (8) corresponds to the hollow cavity of the resonance tube (5), and when the fixed end of the central micropore end plug (7) is connected with the lower end of the resonance tube (5), the central micropore boss (8) is positioned in the hollow cavity of the resonance tube (5); at the moment, the hollow cavity of the resonance tube (5) between the upper surface of the central micropore boss (8) and the end face (4) of the amplitude transformer is a central micropore hard wall surface resonance depth zone (6); the outer diameter of the cross section of the center micropore boss (8) is the same as the diameter of the cross section of the hollow cavity of the resonance tube (5); the ratio of the cross-sectional area of the hollow cavity of the resonance tube (5) to the cross-sectional area of the feed hole (9) is greater than or equal to 50; the length of the resonance depth area (6) of the central micropore hard wall surface is 1/2 of the wavelength of the resonance wave;
or the end plugs are circumferential annular gap end plugs (13), and the feed inlet is a T-shaped feed hole (15);
the circumferential annular gap end plug (13) comprises a fixed end and a feeding end; the fixed end is provided with a plane groove, and the middle part of the groove is provided with a circumferential annular gap end blocking boss (14); the feeding end is provided with a T-shaped feeding hole (15), the T-shaped feeding hole (15) comprises a horizontal hole and a vertical hole, wherein the horizontal hole radially penetrates through the circumferential annular gap end blocking boss (14) and is positioned at the bottom of the circumferential annular gap end blocking boss, and the vertical hole is communicated with the lower surfaces of the horizontal hole and the feeding end;
the plane groove of the fixed end is matched with the lower end of the resonance tube (5), and the circumferential annular gap end blocking boss (14) corresponds to the hollow cavity of the resonance tube (5); when the fixed end of the circumferential annular gap end plug (13) is connected with the lower end of the resonance tube (5), the circumferential annular gap end plug boss (14) is positioned in the hollow cavity of the resonance tube (5), and a circumferential annular gap (16) is formed between the outer circumference of the circumferential annular gap end plug boss (14) and the inner wall of the hollow cavity of the resonance tube (5); at the moment, the hollow cavity of the resonance tube (5) between the upper surface of the circumferential annular gap end blocking boss (14) and the amplitude transformer end face (4) is a circumferential annular gap hard wall surface resonance depth zone (12); the cross section diameter of the circumferential annular gap end blocking boss (14) is the same as the cross section diameter of the end face (4) of the amplitude transformer; the ratio of the cross-sectional area of the hollow cavity of the resonance tube (5) to the cross-sectional area of the vertical hole of the T-shaped feeding hole (15) is more than or equal to 50; the length of the resonant depth zone (12) of the circumferential annular gap hard wall surface is 1/2 of the wavelength of the resonant wave;
or the end plug is an acoustic cavity end plug (18), and the feed inlet is an acoustic cavity feed hole (20);
the sound volume cavity end plug (18) comprises a fixed end, a sound volume cavity (19) and a feeding end; the feeding end is provided with an acoustic cavity feeding hole (20), and the acoustic cavity feeding hole (20) is communicated with the acoustic cavity (19); when the fixed end of the sound-containing cavity end plug (18) is connected with the lower end of the resonance tube (5), the sound-containing cavity (19) is communicated with the hollow cavity of the resonance tube (5); at the moment, the hollow cavity of the resonance tube (5) below the end face (4) of the amplitude transformer is a sound volume soft wall surface resonance depth zone (17); the ratio of the cross-sectional area of the sound-containing cavity (19) to the cross-sectional area of the hollow cavity of the resonance tube (5) is greater than or equal to 50; the length of the resonance depth area (17) of the sound volume soft wall surface is 3/4 of the wavelength of the resonance wave.
2. The ultrasonic resonance disintegration apparatus as recited in claim 1, wherein: the length of the central micropore boss (8) extending into the hollow cavity of the resonance tube (5) is 10-12 mm; the length of the resonance depth area (6) of the hard wall surface of the central micropore is 37mm.
3. The ultrasonic resonance disintegration apparatus as recited in claim 1, wherein: the length of the circumferential annular gap end blocking boss (14) extending into the hollow cavity of the resonance tube (5) is 10-12 mm; the length of the circumferential annular gap hard wall surface resonance depth zone (12) is 37mm.
4. The ultrasonic resonance disintegration apparatus as recited in claim 1, wherein: the amplitude transformer (1) is a multi-section combined composite amplitude transformer, and the end head is a cylindrical rod with a constant cross section.
5. The ultrasonic resonance disintegration apparatus as recited in claim 1, wherein: the diameter of the end face (4) of the amplitude transformer is 8-10 mm.
6. The ultrasonic resonance disintegration apparatus as recited in claim 1, wherein: the radial width of the discharge annular gap (10) is larger than the particle size of the feed particles.
7. The ultrasonic resonance disintegration apparatus as recited in claim 1, wherein: the diameter of the cross section of the hollow cavity of the resonance tube (5) is 8.2-10.2 mm; the diameter of the discharge hole (11) is 1-2 mm.
8. A method of ultrasonic resonance disintegration using the ultrasonic resonance disintegration apparatus as claimed in any one of claims 1 to 7, characterized in that: the method comprises the following steps:
when in use, the resonance tube (5) is vertically arranged, and the ultrasonic transducer is positioned at the highest point;
a) Setting the material injection quantity and the material injection interval time of each time of a material injection pump according to the requirement of receiving energy and the width of a high sound pressure interval;
the injection form is a constant volume pulse form, and the injection volume of each pulse injection period is the cross section area of the hollow cavity of the resonance tube (5) multiplied by 1/8 wavelength;
the material injection amount is 0.5-2 ml, and the material injection interval time is 1-2 s;
b) The temperature of the feed liquid (3) is regulated to enable the temperature of the feed liquid entering the hollow cavity of the resonance tube (5) to be lower than 15 ℃;
c) Injecting material into the hollow cavity of the resonance tube (5) through the feed inlet of the end plug, so that the hollow cavity of the resonance tube (5) is filled with the material liquid;
d) Inserting the amplitude transformer (1) into the feed liquid sleeve (2), and immersing the end face (4) of the amplitude transformer into a hollow cavity of a resonance tube (5) filled with feed liquid (3); ensuring that the hollow cavities of the amplitude transformer (1), the feed liquid sleeve (2) and the resonance tube (5) are coaxial; the end face (4) of the amplitude transformer (1) is parallel to the wall surface of the port of the hollow cavity of the resonance tube (5);
e) Injecting materials into the hollow cavity of the resonance tube (5) by using a material injection pump;
f) Connecting an amplitude transformer (1) with an ultrasonic transducer, starting the ultrasonic transducer, and enabling the ultrasonic transducer to drive the amplitude transformer (1) to carry out amplitude gain and energy transmission;
the amplitude variation multiple of the amplitude transformer (1) is more than 10;
g) The end face (4) of the amplitude transformer breaks feed liquid in the hollow cavity of the resonance tube (5), and the broken feed liquid (3) enters the feed liquid sleeve (2) through the discharge annular gap (10);
h) After crushing, collecting the treated feed liquid (3) flowing out from the discharge port (11) and separating out fine particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810294943.8A CN108722621B (en) | 2018-03-30 | 2018-03-30 | Ultrasonic resonance crushing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810294943.8A CN108722621B (en) | 2018-03-30 | 2018-03-30 | Ultrasonic resonance crushing device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108722621A CN108722621A (en) | 2018-11-02 |
| CN108722621B true CN108722621B (en) | 2024-03-12 |
Family
ID=63941228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810294943.8A Active CN108722621B (en) | 2018-03-30 | 2018-03-30 | Ultrasonic resonance crushing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108722621B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114308212B (en) * | 2021-12-29 | 2022-12-27 | 龙游县河道疏浚砂资源开发有限公司 | Cone crusher for sand making and crushing method thereof |
| CN115430504A (en) * | 2022-09-02 | 2022-12-06 | 深圳声共振科技有限公司 | Method for grinding bones and teeth and cold water circulating grinding container for grinding bones and teeth |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2070623A (en) * | 1980-02-05 | 1981-09-09 | Sundberg K W | Methods and apparatus for disintegrating plastics and/or rubber materials |
| CA1225976A (en) * | 1982-11-01 | 1987-08-25 | Albert G. Bodine | Cycloidal sonic mill for comminuting material suspended in liquid and powered material |
| CN87213972U (en) * | 1987-09-30 | 1988-05-04 | 宁波市华侨新技术实业有限公司 | Ultrasonic cell crasher |
| CN1032366A (en) * | 1987-09-30 | 1989-04-12 | 宁波市华侨新技术实业有限公司 | Supersonic cell pulverizer |
| US5035363A (en) * | 1990-07-06 | 1991-07-30 | Thiokol Corporation | Ultrasonic grinding of explosives |
| JPH07164320A (en) * | 1993-12-15 | 1995-06-27 | Y A Shii Kk | Polishing solution feeding device |
| RU94027025A (en) * | 1994-07-18 | 1996-05-20 | С.Г. Некрасов | Hydrodynamic emitter |
| KR19980027316A (en) * | 1996-10-11 | 1998-07-15 | 류정인 | Ultrasonic powder maker |
| US5840179A (en) * | 1997-06-19 | 1998-11-24 | Jtm Industries, Inc. | Ultrasonic conditioning and wet scubbing of fly ash |
| CN1287023A (en) * | 1999-09-08 | 2001-03-14 | 株式会社威士诺 | Jet mill |
| CN1850343A (en) * | 2006-04-24 | 2006-10-25 | 南昌大学 | Striking cavity for liquid-phase super-fine disintegration |
| CN1923379A (en) * | 2006-09-12 | 2007-03-07 | 周芳 | Ultrasonic vibrator and ultrasonic wave mist spray crusher |
| CN101249466A (en) * | 2007-02-20 | 2008-08-27 | 独立行政法人物质材料研究机构 | Dispersing or milling apparatus, and dispersing or milling method using same |
| CN102872736A (en) * | 2012-10-25 | 2013-01-16 | 山东师范大学 | Ultrasonic strengthened high-pressure homogenizing valve |
| CN204544165U (en) * | 2014-12-30 | 2015-08-12 | 中南大学 | A kind of intensified by ultrasonic wave impact flow reactor |
| CN107442390A (en) * | 2017-08-15 | 2017-12-08 | 浙江工商大学 | A kind of new type ultrasonic amplitude rod devices |
| CN206882008U (en) * | 2017-06-21 | 2018-01-16 | 江苏瑞尔隆鼎实业有限公司 | Ultrasonic resonator strong pulse jet spray head device |
| CN208526910U (en) * | 2018-03-30 | 2019-02-22 | 北京工商大学 | Ultrasonic resonator crushing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010087974A1 (en) * | 2009-01-30 | 2010-08-05 | Sulphco, Inc. | Ultrasonic horn |
-
2018
- 2018-03-30 CN CN201810294943.8A patent/CN108722621B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2070623A (en) * | 1980-02-05 | 1981-09-09 | Sundberg K W | Methods and apparatus for disintegrating plastics and/or rubber materials |
| CA1225976A (en) * | 1982-11-01 | 1987-08-25 | Albert G. Bodine | Cycloidal sonic mill for comminuting material suspended in liquid and powered material |
| CN87213972U (en) * | 1987-09-30 | 1988-05-04 | 宁波市华侨新技术实业有限公司 | Ultrasonic cell crasher |
| CN1032366A (en) * | 1987-09-30 | 1989-04-12 | 宁波市华侨新技术实业有限公司 | Supersonic cell pulverizer |
| US5035363A (en) * | 1990-07-06 | 1991-07-30 | Thiokol Corporation | Ultrasonic grinding of explosives |
| JPH07164320A (en) * | 1993-12-15 | 1995-06-27 | Y A Shii Kk | Polishing solution feeding device |
| RU94027025A (en) * | 1994-07-18 | 1996-05-20 | С.Г. Некрасов | Hydrodynamic emitter |
| KR19980027316A (en) * | 1996-10-11 | 1998-07-15 | 류정인 | Ultrasonic powder maker |
| US5840179A (en) * | 1997-06-19 | 1998-11-24 | Jtm Industries, Inc. | Ultrasonic conditioning and wet scubbing of fly ash |
| CN1287023A (en) * | 1999-09-08 | 2001-03-14 | 株式会社威士诺 | Jet mill |
| CN1850343A (en) * | 2006-04-24 | 2006-10-25 | 南昌大学 | Striking cavity for liquid-phase super-fine disintegration |
| CN1923379A (en) * | 2006-09-12 | 2007-03-07 | 周芳 | Ultrasonic vibrator and ultrasonic wave mist spray crusher |
| CN101249466A (en) * | 2007-02-20 | 2008-08-27 | 独立行政法人物质材料研究机构 | Dispersing or milling apparatus, and dispersing or milling method using same |
| CN102872736A (en) * | 2012-10-25 | 2013-01-16 | 山东师范大学 | Ultrasonic strengthened high-pressure homogenizing valve |
| CN204544165U (en) * | 2014-12-30 | 2015-08-12 | 中南大学 | A kind of intensified by ultrasonic wave impact flow reactor |
| CN206882008U (en) * | 2017-06-21 | 2018-01-16 | 江苏瑞尔隆鼎实业有限公司 | Ultrasonic resonator strong pulse jet spray head device |
| CN107442390A (en) * | 2017-08-15 | 2017-12-08 | 浙江工商大学 | A kind of new type ultrasonic amplitude rod devices |
| CN208526910U (en) * | 2018-03-30 | 2019-02-22 | 北京工商大学 | Ultrasonic resonator crushing device |
Non-Patent Citations (1)
| Title |
|---|
| 超声振动特性在磨削加工系统中的应用;张楠;侯晓林;闻邦椿;;工具技术(第11期);第40-42页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108722621A (en) | 2018-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108722621B (en) | Ultrasonic resonance crushing device and method | |
| CN108722326A (en) | Vibration component, the cosmetic apparatus with the vibration component and its application method | |
| CN205611648U (en) | Ultrasonic wave sea water squid thawing apparatus | |
| CN201279458Y (en) | High-power ultrasonic photochemistry treatment system | |
| CN104209222B (en) | A kind of Bernoulli Jacob's three atomizers of twisted-pair cable type low frequency ultrasound | |
| CN106285493A (en) | Crusher drill in horizontal well spinning pulse | |
| CN102189058B (en) | Middle-feeding ultrasonic powerful resonance pulsed jet spray head device | |
| CN110876982A (en) | Non-contact ultrasonic crushing device for hard and brittle materials | |
| CN205833326U (en) | Combination refrigeration-type ultrasound wave dispersion disintegrating apparatus | |
| CN204233854U (en) | Supersonic self cleaning filter | |
| CN202097067U (en) | Middle-entering ultrasonic strong force resonance pulse jet sprayer device | |
| CN202962280U (en) | Reverse osmosis membrane water purifying unit | |
| CN208526910U (en) | Ultrasonic resonator crushing device | |
| CN204841654U (en) | Ultrasonic wave plant cell broken wall device | |
| CN208032762U (en) | Ultrasonic wave cumulative breaker | |
| CN100566854C (en) | A kind of ultrasonic atomization pulverizer | |
| CN106744871A (en) | The pretreatment unit and method of graphite raw material, graphitized mesophase body and Graphene | |
| CN208555294U (en) | Supersonic wave cleaning machine | |
| CN202962284U (en) | Ultrafiltration membrane water purifying unit | |
| CN216323805U (en) | Lifting type ultrasonic cleaning machine | |
| CN108014895B (en) | Ultrasonic energy-gathering crushing method and device | |
| CN211587753U (en) | Ultrasonic cleaning pool | |
| CN205392867U (en) | Novel cultivation ultrasonic atomization of area gathering function device | |
| CN201659123U (en) | Ultrasonic cleaning device for plastic drinking water gallon barrel | |
| CN102535064A (en) | Ultrasonic dyeing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |