It is normal for the laboratory mini-centrifuge to generate a lot of heat when it is running. The mechanical energy of the centrifuge rotor is converted, and part of the energy is converted into heat, which causes the centrifuge parts to generate heat. However, if the centrifuge components are overheated, it means that the conversion of excess energy into heat is lost, and this requires attention. Centrifuges are indispensable equipment for today's life science research centers and are basic laboratory instruments. There are now various types of centrifuges. How to ensure the safe operation of the instrument and exert its full performance is a major concern of experimental technicians.
After the centrifuge is purchased, technical training is required. Centrifuge accidents can occur due to improper use of the instrument or lack of regular maintenance. In order to improve the use rate of the instrument and prolong the service life, the instrument is safely operated and accidents are avoided.
In general, centrifuge failure is caused by excessive imbalance of the rotor, and the weighing error of the sample, the overflow of the centrifugal sample liquid during centrifugation, and the corrosion of the rotor are the main factors causing the rotor imbalance.
- The main causes of the accidents are as follows: Since the specific gravity of the original sample is not equal to the specific gravity of the trimming liquid, the rotor is dynamically balanced, the rotor cover is thrown and a short-axis accident occurs, and the balance is out of balance and an accident occurs.
- When using a horizontal rotor, the serial number of the bucket and the serial number of the horizontal rotor body are not carefully read, which affects the dynamic balance of the rotor.
- The centrifuge power setting is too high, and the actual required power is not so large, and the excess power is lost and converted into electrical energy.
- Centrifuge settings or starting device problems, high-speed centrifuge start-up energy conversion rate is relatively low. If the centrifuge is set too fast or there is a problem with the starting device, it is easy to make the centrifuge power too large, but the energy conversion rate is low and the case is overheated. The cause of the centrifuge failure should be found in time and processed or contacted by the centrifuge manufacturer for centrifuge troubleshooting.
- The centrifuge is overloaded, causing the current to become larger, the rated power is greater than the actual power, and the excess is converted to heat dissipation, causing the centrifuge components to overheat.
- When the centrifuge tube is balanced, the balance of the centrifuge tube is more than 0.1 to 1 g due to the long-term use of the balance and the proofreading.
- When the centrifuge tube is loaded, the sample liquid is filled or centrifuged.
- The centrifuge tube is aged or the high-speed centrifuge centrifuge tube is used on the ultracentrifuge to break the centrifuge tube during operation, and the sample liquid overflows to cause an imbalance, which causes the shaft to bend.
- For various reasons, the fixing parts of the drive system or other systems were not removed during installation, and the test operation of the instrument was forced to cause a broken shaft and a rotor explosion accident.
- An aluminum alloy centrifugal cap is mixed with a stainless steel centrifuge cap (the two have different specific gravity) and an accident occurs.
- The rubber seal ring and the rotor cap rubber seal ring in the centrifuge cap are improperly used and improperly disinfected, such as long-term internal cracking and solid high temperature sterilization (using dry box baking), etc., aging cracking, loss of sealing effect, etc. Overflow at high speeds, allowing the rotor to operate in an unbalanced state.
- For the centrifuge tubes of various materials, the scope and disinfection method of the centrifuge tube required by the manufacturer are not well understood before use, and the chemical tube and the inappropriate disinfectant solution are used to cause the centrifuge tube to swell and rupture during operation. ACCIDENT.
- Carelessly in the work, the rotor cover is not tightened or the rotor cover and the rotor handle are interchanged, causing the screw to not match. When the machine is started, the rotor cover is thrown and a serious shaft breakage occurs.
- Materials such as drive shafts and rotors have internal inspections or inspection and quality problems in manufacturing, and are one of the main causes of accidents in the instrument.
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