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Sonic sieve instrument Sonic screening machine sound wave vibration screening machine
Product Inrtoduction:
The sonic sieve is a sieving instrument that tests the particle size distribution of powders. The instrument uses the vibrations generated by sound waves to carry out the screening work. The instrument fully complies with the national standard "Determination of Fine Powder Particle Size Distribution - Sonic Sieving Method GB/13220" and the standard of the American ASTME323 ASTM161. The sonic screening machine is a precision laboratory screening equipment that is simple to operate and easy to use. It is widely used in various colleges and universities, laboratories, research institutes, pharmaceutical research institutions and other small sample screening experiments, especially for powder with low density, light weight, easy to agglomerate and generate static electricity.
Screening Theory
When the sonic screening machine is working, the power mainly comes from the sonic generator. Before the sieving experiment, the standard sieves are stacked into a closed assembly space. The sound waves generated by the sonic generator push the air vibrating push pads to lift the air in the enclosed screen tower assembly space up and down. At this time, a columnar air will be formed with a vibration frequency of 3600 times/minute, which will drive the air to lift up and down in the sieve hole, forcing the powder on the surface of the screen to vibrate, tumble and jump together. Powder particles smaller than the sieve hole are easily sieved, and the largest powder is collected by the collector. This high-frequency vibration mode of driving air with sound waves is the vibration frequency that cannot be reached by conventional screening instruments, which can effectively solve the problems of easy agglomeration, easy adsorption, and static electricity of ultrafine powder, and greatly improve the screening efficiency and time.
Instrument Structure
The instrument is composed of an acoustic generator, a sonic frequency regulator, a standard sieve, a sample collection chamber, a spacer, an air vibration pusher, a timer, a microcontroller, an intermittent hitter, a standard sieve, an audible visible transparent window and other accessories.
Features
1. Unique sonic sieving motion for precise and fast sample separation
2. The minimum particle size of the processed powder can reach 5 microns
3. Sample separation can be completed in 60 seconds
4. The sieved sample is not worn and the physical properties of the original sample are maintained
5. Eliminate the static electricity of particles, easy to adsorb, and achieve the effect of water-soluble wet sieve (special sieving samples need to be water-dissolved to maintain normal size)
6. Equipped with an intermittent hitter to eliminate powder agglomeration
7. The vertical high-frequency vibrating air column is screened and separated at 3600 times/min
8. There is no need for negative pressure equipment to screen multiple layers at one time, and the transparent screen frame can directly observe the whole process of screening
9. The standard sieve conforms to national standards and international standards, and each standard sieve has a national certification body for sieve hole testing, and is equipped with a standard sieve certificate
10. Quiet operation and easy operation
11. Microcomputer control to reduce human error
12. Screening software can be selected, which can automatically weigh and calculate the screening process, automatically analyze the powder particle size distribution of each sieve layer at all levels, and 11. Automatically generate particle size distribution curves.
Product Parameters
1. Size: width 50cm, depth 38cm, height 99cm
2. Weight: 28kg
3. Power: 220V-50Hz
4. Strike direction: vertical hit, longitudinal hit
5. Number of stacking layers: 8 groups of standard screens with a diameter of 200mm can be superimposed for simultaneous screening
6. Sieving time: 1 minute-99.99 minutes
7. Frequency range: 2HZ-300HZ
8. Working environment: temperature 0-40 degrees Celsius, humidity < 85%
9. Sieving range: 10-100g
10. Standard sieve size: standard sieve with a diameter of 200