Stabilizing Factors of the Rotating System in High-Capacity Centrifuges
Release time:
2016-01-08
Overview:
High-capacity centrifuge
High-capacity centrifuge There are many factors that influence the stability of rotating systems, and no seasoned centrifuge manufacturer could possibly conduct a completely comprehensive analysis of them all. Therefore, today we’ll take a closer look at some key factors—specifically focusing on the relationship between mass and balance—as an example. As everyone knows... Imbalance in mass is the primary cause of vibration. Among the many factors that can lead to centrifuge failure, rotor loading imbalance or asymmetric placement of test tubes are common causes. Zone rotors do not require balancing; however, during sample loading and retrieval, it is crucial to ensure rotor balance. This necessitates keeping the entire tubing system unobstructed and ensuring that the gradient liquids and samples are evenly distributed among all sector chambers. Angular rotors and swinging-bucket rotors require that the centrifuge tubes, sleeves, samples, and tube caps be placed together on a balance for weight adjustment and balance. Large-capacity centrifuges are primarily used to separate solid particles from liquids in suspensions, or to separate two immiscible liquids of different densities in emulsions (for example, separating cream from milk). They can also be used to remove liquids from wet solids—for instance, using a washing machine to spin-dry wet clothes. Special high-speed tubular separators can even separate gas mixtures of varying densities. Leveraging the principle that solid particles of different densities or particle sizes settle at different rates in a liquid, some sedimentation centrifuges can also classify solid particles according to their density or particle size.
The key to successfully using vertical rotors (including angle rotors) in high-capacity centrifuges—especially in ultracentrifuges—is the proper sealing of the centrifuge tubes. During centrifugation with a vertical rotor, the tube cap is subjected to the pressure exerted by the liquid inside the tube. In addition to ensuring a tight seal, it’s crucial that the tube cap, the centrifuge tube itself, and the rotor are precisely matched to minimize the amount of air trapped inside the tube, thereby reducing the degree of tube collapse to a minimum. When substances settle in a medium, they are accompanied by a phenomenon known as diffusion. Diffusion is unconditioned and absolute: the smaller the particles of a substance, the greater the range of their diffusion. By contrast, sedimentation is conditional and requires an external force; the heavier the object, the faster its sedimentation rate. Since some particles are so tiny that their sedimentation process is difficult to observe directly, this leads to... High-capacity centrifuge 。
When the high-capacity centrifuge is in the pre-cooling state, the centrifuge lid must be closed. After the centrifugation is complete, once the rotor is removed, it should be inverted onto the laboratory bench, and any residual water inside the chamber should be wiped dry. The centrifuge lid should remain open. During pre-cooling, the rotor cover can be placed either on the centrifuge’s platform or on the laboratory bench; under no circumstances should it be left floating loosely on the rotor, as an accidental start-up could cause the rotor cover to fly off, leading to a serious accident! After tightening the rotor cover, be sure to use your fingers to check that there is no gap between the rotor and the cover. If you detect any gap, loosen and retighten the cover until you confirm that there is absolutely no gap before starting the centrifuge. During the centrifugation process with a high-capacity centrifuge, operators must not leave the centrifuge room. In the event of an abnormal situation, operators must not turn off the power supply—instead, they should press the STOP button. Before starting pre-cooling, operators must complete the centrifuge usage log. It is strictly forbidden to use substandard or counterfeit centrifuge tubes, as well as tubes that are aged, deformed, or cracked. On holidays and during evening shifts, operators may leave only after performing a routine safety inspection following the last use of the centrifuge.
A high-capacity centrifuge utilizes the powerful centrifugal force generated by the high-speed rotation of its rotor to accelerate the sedimentation rate of particles in a liquid, thereby separating substances within a sample that have different sedimentation coefficients and buoyant densities. Primarily, it is used to extract desired components from liquid mixtures. Due to the varying densities of different substances, when the mixture undergoes high-speed rotation, the denser liquids settle at the bottom while the lighter ones float on top, thus achieving liquid layering and isolating the pure substances I need. This type of centrifuge finds applications in numerous fields, including pharmaceuticals and chemical engineering. During operation, the high-capacity centrifuge rotates at very high speeds; therefore, never touch its rotating drum with your body to avoid accidents. The mesh count of the filter cloth should be determined based on the size of solid particles in the material being separated; otherwise, the separation efficiency will be compromised. Additionally, when installing the filter cloth, make sure to snap the sealing ring of the filter cloth into the sealing groove of the drum to prevent material leakage. To ensure the centrifuge operates smoothly, lubricate and maintain its rotating parts every six months. At the same time, check the lubrication condition of the bearings for any signs of wear or damage. High-capacity centrifuge Check whether the components in the braking system show signs of wear; replace any severely worn parts. Also, verify that the bearing covers are free from oil leaks. After use, be sure to clean the machine thoroughly and keep it tidy.
The key to successfully using vertical rotors (including angle rotors) in high-capacity centrifuges—especially in ultracentrifuges—is the proper sealing of the centrifuge tubes. During centrifugation with a vertical rotor, the tube cap is subjected to the pressure exerted by the liquid inside the tube. In addition to ensuring a tight seal, it’s crucial that the tube cap, the centrifuge tube itself, and the rotor are precisely matched to minimize the amount of air trapped inside the tube, thereby reducing the degree of tube collapse to a minimum. When substances settle in a medium, they are accompanied by a phenomenon known as diffusion. Diffusion is unconditioned and absolute: the smaller the particles of a substance, the greater the range of their diffusion. By contrast, sedimentation is conditional and requires an external force; the heavier the object, the faster its sedimentation rate. Since some particles are so tiny that their sedimentation process is difficult to observe directly, this leads to... High-capacity centrifuge 。
When the high-capacity centrifuge is in the pre-cooling state, the centrifuge lid must be closed. After the centrifugation is complete, once the rotor is removed, it should be inverted onto the laboratory bench, and any residual water inside the chamber should be wiped dry. The centrifuge lid should remain open. During pre-cooling, the rotor cover can be placed either on the centrifuge’s platform or on the laboratory bench; under no circumstances should it be left floating loosely on the rotor, as an accidental start-up could cause the rotor cover to fly off, leading to a serious accident! After tightening the rotor cover, be sure to use your fingers to check that there is no gap between the rotor and the cover. If you detect any gap, loosen and retighten the cover until you confirm that there is absolutely no gap before starting the centrifuge. During the centrifugation process with a high-capacity centrifuge, operators must not leave the centrifuge room. In the event of an abnormal situation, operators must not turn off the power supply—instead, they should press the STOP button. Before starting pre-cooling, operators must complete the centrifuge usage log. It is strictly forbidden to use substandard or counterfeit centrifuge tubes, as well as tubes that are aged, deformed, or cracked. On holidays and during evening shifts, operators may leave only after performing a routine safety inspection following the last use of the centrifuge.
A high-capacity centrifuge utilizes the powerful centrifugal force generated by the high-speed rotation of its rotor to accelerate the sedimentation rate of particles in a liquid, thereby separating substances within a sample that have different sedimentation coefficients and buoyant densities. Primarily, it is used to extract desired components from liquid mixtures. Due to the varying densities of different substances, when the mixture undergoes high-speed rotation, the denser liquids settle at the bottom while the lighter ones float on top, thus achieving liquid layering and isolating the pure substances I need. This type of centrifuge finds applications in numerous fields, including pharmaceuticals and chemical engineering. During operation, the high-capacity centrifuge rotates at very high speeds; therefore, never touch its rotating drum with your body to avoid accidents. The mesh count of the filter cloth should be determined based on the size of solid particles in the material being separated; otherwise, the separation efficiency will be compromised. Additionally, when installing the filter cloth, make sure to snap the sealing ring of the filter cloth into the sealing groove of the drum to prevent material leakage. To ensure the centrifuge operates smoothly, lubricate and maintain its rotating parts every six months. At the same time, check the lubrication condition of the bearings for any signs of wear or damage. High-capacity centrifuge Check whether the components in the braking system show signs of wear; replace any severely worn parts. Also, verify that the bearing covers are free from oil leaks. After use, be sure to clean the machine thoroughly and keep it tidy.
Address: No. 9, Lane 4390, Hulan Road, Shanghai
Website:www.lxylxj.com
Tel: +86-21-58116435
Fax: +86-21-51316027
Mobile: +8618801858806
E-mail: info@bioridgecentrifuge.com
Messages
Please leave your contact information, and we will get in touch with you as soon as possible.
Links: