The ultrasonic wave pulverizer
(1) technical field under
The present invention relates to a kind of pulverizer, particularly a kind of ultrasonic wave the pulverizing and ultrasonic wave pulverizer that the mechanical agitation pulverizing combines.
(2) background technology
Along with science and technology development, the required powder granularity of people is more and more littler, and the needs that have reach nano level powder.Particularly along with the intensification that nano material is understood, the performance of the various excellences of nano material is found, and the application of nano material is more and more wider.The function of the stirring pulverizer that uses is limit at present, and made powder granularity is relatively too big, does not reach the demand under people's particular case.Be 87213972 Chinese patent as the patent No.: " supersonic cell pulverizer " discloses a kind of ultrasonic wave that utilizes and pulverized organic cell pulverization machine.Because organic matter hardness is little, to pulverize than being easier to, above-mentioned grinder can reach the requirement that nanoscale is pulverized.But, use above-mentioned cell pulverization machine then not reach desirable effect for some metals and inorganic non-metallic thing, particularly silicates.
(3) summary of the invention
The present invention provides a kind of and has utilized ultrasonic wave pulverizing and mechanical agitation pulverizing to combine in order to overcome above deficiency, inorganic matter can be crushed to nano level ultrasonic wave pulverizer.
Technical scheme of the present invention realizes by following measure:
A kind of ultrasonic wave pulverizer comprises motor, electric machine support, is used for churned mechanically stirring rod, is used to hold mixing drum, the cylinder stent of crushed material; Fix a ultrasonic wave in the periphery of mixing drum tube takes place, a water inlet pipe is arranged at the bottom that tube takes place ultrasonic wave, and an outlet pipe is arranged at top; The peripheral symmetry that tube takes place ultrasonic wave is evenly equipped with ultrasonic transmitter.
Ultrasonic wave pulverizer of the present invention is installed ultrasonic wave for convenience tube is taken place, and improves hyperacoustic crush efficiency, and tube takes place described ultrasonic wave is the positive multiedge cylinder of even number face.
Tube takes place in order to protect ultrasonic wave, and is used for the support fixation pulverizer in ultrasonic wave pulverizer of the present invention, sends out the periphery of tube at ultrasonic wave and fixes a urceolus.
Ultrasonic wave pulverizer of the present invention, described ultrasonic frequency are 20KHz~50KHz.
Architectural feature of the present invention: tube takes place and is preferably multiple edge body configuration (being generally the even number face) in ultrasonic wave, on its each face ultrasonic transmitter is installed, and evenly distributes at an angle between the ultrasonic transmitter.Because even number face polyhedron is configured as symmetrical structure, assemble thereby make the ultrasonic transmitter ultrasonic waves transmitted transmit to the center.Utilize hyperacoustic cavitation blast effect and microjet effect, material is done further pulverizing and dispersion.
Frequency of ultrasonic is very high, generally between 20KHz~50KHz.Have stronger cavitation shock effect and microjet effect.Material had stronger percussion.Combine by ultrasonic wave pulverizing and mechanical crushing, can play a multiplier role.
The present invention can crushing metal and inorganic non-metallic material, particularly silicate compound.With ESEM the material after pulverizing is carried out grain size analysis, find that it has reached nanoscale, that is to say that the present invention can produce nano-powder fully in a large number.
The present invention can be crushed to nanoscale with metal and Inorganic Non-metallic Materials, can select different abrasive medias and decentralized medium for use according to the character of the powder produced of require.Be applied to chemical industry, metallurgy, building materials, electronics etc. and need a large amount of industries of producing nano-powder.
The present invention pulverizes ultrasonic wave and stir to pulverize to combine and also metal and non-metallic material pulverizing can be nanoscale, has advantage simple in structure, easily manufactured.
(4) description of drawings
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present invention
Fig. 2 is the A-A cutaway view of Fig. 1
Fig. 3 is for pulverizing the electromicroscopic photograph of MgO material
Fig. 4 is for pulverizing the size distribution histogram of MgO material
Fig. 5 is the electromicroscopic photograph of crushing metal copper material
Fig. 6 is the size distribution histogram of crushing metal copper material
Among Fig. 1,2,1 motor, 2 stirring rod, 3 mixing drums, tube takes place in 4 ultrasonic waves, 5 ultrasonic transmitters, 6 urceolus, 7 cylinder stents, 8 perpendicular stent support seats, 9 perpendicular supports, 10 electric machine supports, 11 outlet pipes, 12 water inlet pipes.
(5) specific embodiment
Accompanying drawing 1 and Fig. 2 are a kind of specific embodiment of the present invention.
Tube 3 takes place described ultrasonic wave is positive eight rib builds, and each side that tube 3 takes place ultrasonic wave is evenly distributed with upper and lower 2 ultrasonic transmitters 5, and the bottom that tube takes place ultrasonic wave is evenly distributed with 3 ultrasonic transmitters 5 that are the equilateral triangle symmetry.The bottom that tube 4 takes place ultrasonic wave is provided with a water inlet pipe 12, and the top that the tube side takes place ultrasonic wave is provided with an outlet pipe 11.
The mixing drum 3 of this embodiment is enclosed within ultrasonic wave and takes place in the tube 6, ultrasonic generation tube 6 is enclosed within the urceolus, the flange that tube and urceolus take place for mixing drum 3, ultrasonic wave passes through bolted on connection together, and a seal cover is arranged on the mixing drum 3, and urceolus 6 is by being bolted on the cylinder stent 7.Be useful on churned mechanically stirring rod 2 in the mixing drum 3, and the abrasive body of making by the corundum ball.Stirring rod 2 is driven by motor 1.Described buncher 1 is fixed on the electric machine support 10, and electric machine support 10 is fixed on the perpendicular support 9 and can slides up and down along perpendicular support 9, and perpendicular support 9 is enclosed within the perpendicular stent support seat 8, and by set lever locking, the perpendicular support 9 of release handle can rotate freely.
Two ultrasonic transmitters (vibration frequency 20KHz) are installed on each side of ultrasonic wave launching tube, and the bottom symmetry is installed three ultrasonic transmitters, amounts to 19 ultrasonic transmitters, and general power is 1500W; The mixing drum volume is 4500L, and the entire machine apparent size is long 760mm * wide 550mm * high 1400mm, and used abrasive body is the corundum ball, and decentralized medium is a water.
The material that present embodiment is pulverized is MgO, average grain diameter: D
Flat=5.39 μ m, meta particle diameter D
In=11.06 μ m, maximum particle diameter is D
Max=45 μ m.
Concrete operations are: material is contained in the mixing drum 3, and buncher 1 drives stirring rod 2 stirring abrasive medias material is pulverized.Take place in the tube 4 because mixing drum 3 is enclosed within ultrasonic wave,, utilized cavitation effect of ultrasonic waves and microjet effect that material is done further pulverizing and peptizaiton, reunite to prevent material so simultaneously it is applied ultrasonic wave in that material is pulverized.The water circulation takes place to be provided with between tube in mixing drum and ultrasonic wave, and its bottom is provided with water inlet pipe 12, and top is provided with outlet pipe 11, and water circulates the effect of playing cooling from lower to upper.
With ESEM the material after pulverizing is carried out grain size analysis, find that it has reached nanoscale, that is to say that the present invention can produce nano-powder fully in a large number.
Material after the pulverizing carries out grain size analysis with ESEM (25000 times of multiplication factors), its electromicroscopic photograph as shown in Figure 3, size distribution such as table 1, shown in Figure 4.
Table 1 granulometry is table (powder granule number 524) as a result
Project name | Minimum of a value | Maximum | Mean value | Standard variance |
Feature area (μ m
2)
| ?0.000 | ?0.020 | ?0.003 | ?0.005 |
Girth (μ m) | ?0.040 | ?0.740 | ?0.216 | ?0.139 |
0 degree direction particle diameter (μ m) | ?0.020 | ?0.200 | ?0.065 | ?0.037 |
90 degree direction particle diameters (μ m) | ?0.020 | ?0.250 | ?0.071 | ?0.041 |
2. embodiment 2
The present embodiment ultrasonic frequency is 45KHz, and general power is 1500W.Comminuting matter is a metallic copper.Average grain diameter: D
Flat=2.07 μ m, meta particle diameter D
In=2.86 μ m, maximum particle diameter is D
Max=30 μ m.Other is substantially the same manner as Example 1.
Material after the pulverizing carries out grain size analysis with ESEM (15000 times of multiplication factors), its electromicroscopic photograph as shown in Figure 5, size distribution such as table 2, shown in Figure 6.
Table 2 granulometry is table (powder granule number 524) as a result
Project name | Minimum of a value | Maximum | Mean value | Standard variance |
Feature area (μ m
2)
| ?0.000 | ?0.010 | ?0.005 | ?0.005 |
Girth (μ m) | ?0.070 | ?0.860 | ?0.304 | ?0.164 |
0 degree direction particle diameter (μ m) | ?0.030 | ?0.210 | ?0.091 | ?0.042 |
90 degree direction particle diameters (μ m) | ?0.030 | ?0.260 | ?0.086 | ?0.037 |