Selection and application of ultrasonic cell breaker

The ultrasonic cell breaker uses the dispersing effect of ultrasonic wave in the liquid to make the liquid cavitation, so as to make the solid particles or cell tissue in the liquid broken The conventional use method is to put the material to be broken into the beaker, turn on the power supply to set the time (vibration time and intermittent time), and put the probe of the crusher into the material In use, the ultrasonic generator circuit converts 50 / 60Hz power supply into 18-21khz high-frequency and high-voltage power, so a large amount of heat will be produced in the process of crushing, which is generally broken in the ice bath Ultrasonic cell breaker consists of two parts: ultrasonic generator and transducer (some are equipped with a loudspeaker) 1 Ultrasonic generator: working principle: the signal generator generates a specific frequency signal, which is the frequency of the transducer Generally, the ultrasonic frequency used in the ultrasonic equipment is 20kHz, 25kHz, 28kHz, 33khz, 40KHz, 60KHZ 2 Transducer assembly: transducer assembly is mainly composed of transducer and horn 3 Speaker: it can effectively reduce the noise produced in the process of work and keep the laboratory quiet The application of ultrasonic cell breaker in our country has entered a mature stage, but its application is still not popular! The application range of this instrument (equipment) is very wide, which is incomparable with other instruments and equipment Because of this, the market potential of the instrument (equipment) is very large, so the number of manufacturers is also increasing, which also causes the relative confusion of ultrasonic cleaning industry and market You can use eight words to describe "fish and dragon are mixed, good and bad are mixed"! Classify the ultrasonic cell breaker The specific division is as follows: first, according to the power classification, the power of the ultrasonic cell breaker is the customer's indicator, which determines the quantity, size, quality and effect of the broken objects Therefore, manufacturers attach great importance to this index In general, the power used by laboratories, laboratories, research institutes, drug inspection institutes and other scientific research institutions is not large (generally below 500W); while the power used by biological companies, pharmaceutical factories, chemical enterprises and other production units is mostly around 500W-2000W Due to the different product structure of each manufacturer, the marking method of its power is also different However, according to the common practice of users, there are generally the following types: 50W, 100W, 150W, 250W, 300W, 350W, 500W, 1000W, 2000W Generally, the output power of ultrasonic cell breaker can be adjusted appropriately according to the needs The rated working frequency of the standard ultrasonic cell grinder product is 20 kHz Some ultrasonic cell pulverizers have automatic tuning function, which can make the frequency change in a small range 2、 According to the diameter of tip, it is necessary to select different tip ultrasonic crushers to deal with samples without volume Due to the different product structure of each manufacturer, the diameter of tip is different Generally, "tip" head ranges from 5mm (suitable for 1ml treatment capacity) to 25mm (suitable for 1000ml treatment capacity), with continuous flow probe, and the treatment capacity can reach 80L / h Replaceable "tip" heads are used in high energy applications where wear may occur When the energy is transferred through the tip, corrosion occurs where the metal surface leaves traces As time goes on, there will be slight corrosion spots where corrosion occurs "Tip" head can be polished with sandpaper or gauze, unless it is damaged to a certain extent; when this happens, it will be difficult to tune the frequency of "tip" head, instead, it may produce long and sharp noise, and Zui will eventually crack There are two main factors that need to be considered in order to process a given dose of sample effectively: "tip" head size and output power These two factors must be matched at the same time to get the best effect of Zui If the power is small and the power is large, the tip cannot work; if the power is too large, the tip may be damaged Please pay attention to the model accessories when purchasing.