Acoustic particle suspension dispersion machine is will need sonicator homogenizer to handle directly put in ultrasonic field, with high power ultrasonic to "light", is a kind of high strength dispersion method. First of all, the transmission of ultrasonic wave to medium as the carrier of the ultrasonic wave propagation in the medium has a positive negative pressure alternating cycle, the positive and negative pressure of medium in the colloid received squeeze and pull.
Ultrasonic wave ACTS on liquid medium, medium the distance between the molecules in the negative pressure zone will be more than the critical molecular liquid medium stay the same distance, liquid medium fracture occurs, the formation of foam, foam grow up ultrasonic molten metal into the cavitation bubbles. Ultrasonic dispersion machine, gas can be redissolved in the bubble can also rise and disappear, also may be out of the resonance of the ultrasonic field phase and collapse. A cavitation bubble in liquid medium, the phenomenon of collapse and disappear. Cavitation can produce local high temperature and high pressure, and have a huge impact and the micro jet, nano powder under the action of its, the surface can be weakened, so as to realize the dispersion effect of the nano powder.
To introduce the use of ultrasonic dispersion machine below to note:
1, The no-load operation.
2, Luffing rod (ultrasound probe) into the water depth: 1.5 cm, liquid level height more than 30 mm, probes to the middle and don't stick a wall. Ultrasonic waves is vertical, insert too deep is not easy to form the convection, impact crushing efficiency.
3, Ultrasonic parameter Settings: Settings key instrument working parameters, ultrasonic spray nozzle is more sensitive to temperature requirement of samples (such as bacteria) general outside using an ice bath, actual temperature must be lower than 25 degrees, protein, nucleic acid will surely not degeneration.
4, Container selection: how many samples can choose much beaker, ultrasonic dispersion machine that is positive samples in the ultrasonic convection, improve the efficiency of crushing. For example; The capacity of 20 ml with 20 ml beaker. Set parameters such as e. coli 100 ml sample: ultrasonic 5 seconds 5 seconds/clearance times, 70 times (a total of 10 minutes). Power 300 w (for reference only), the amount of 500 ml, power 500 w to 800 w.
Ultrasonic driven by ultrasonic vibration components and special ultrasonic ultrasonic welding transducer power and reaction kettle of three parts: ultrasonic vibration parts mainly include the high power ultrasonic transducer, the amplitude, tool head (emission), used to generate ultrasonic vibration, ultrasonic dispersion machine and the vibration energy to launch in the liquid. Transducer input electrical energy into mechanical energy, ultrasonic wave. The form is the transducer in longitudinal slip movement back and forth, amplitude generally within a few microns. So the amplitude of the power density is not enough, can't be used directly. According to the design needs to enlarge the amplitude, the amplitude segregation reaction solution and the transducer, but also have the effect of fixed the ultrasonic vibration system. Tool head is connected with the amplitude, luffing rod pass ultrasonic vibration energy to tool head, again by the tool head would launch ultrasonic energy to chemical reaction in the liquid.
