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The working principle of Shanghai Yetuo vacuum centrifugal concentrator is mainly based on two core concepts: vacuum environment and centrifugal force. The combination of these two can quickly remove solvents from the solution at low temperatures, thereby achieving the purpose of concentrating the sample. The following is a detailed analysis of the working principle:
1. Vacuum environment effect:
Lowering the boiling point of the solvent: In a vacuum state, the pressure inside the equipment will decrease, thereby reducing the boiling point of the solvent. Due to the correlation between boiling point and air pressure, solvents can begin to evaporate at lower temperatures when the air pressure decreases. This process can avoid the degradation or volatilization of thermosensitive substances caused by heating.
Solvent evaporation: In a vacuum environment, the evaporation rate of the solution is greatly accelerated. Due to the decrease in pressure, solvent molecules are more likely to transition from a liquid state to a gas state, allowing the solvent to be separated from the sample.
Reduce heat loss: Compared with traditional high-temperature evaporation, a vacuum environment can remove solvents at lower temperatures, thereby reducing damage to heat sensitive components and protecting important components in the sample from destruction.
2. Centrifugal force effect:
Accelerated evaporation process: The vacuum centrifugal concentrator usually has a centrifugal rotor inside, and the sample is placed in the rotor through a centrifuge tube. After the equipment is turned on, the rotor begins to rotate, generating centrifugal force. This force pulls liquid molecules in the solution towards the container wall, thereby increasing the contact area between the solution surface and the air. More contact area means more solvent evaporation, thus accelerating the evaporation process.
Improving efficiency: Centrifugal force can make liquid molecules in the solution move more actively, helping the solvent evaporate faster and leave the sample. This greatly increases the rate of solvent removal over time, thereby improving concentration efficiency.
3. Temperature control system:
Vacuum centrifugal concentrators are typically equipped with temperature control systems to regulate the temperature of the sample. The change in temperature is crucial during the evaporation process. If the temperature is too high, it may damage heat sensitive substances; If the temperature is too low, it may cause the evaporation process to be too slow.
Through a temperature control system, the instrument can maintain the stability of the sample within a preset temperature range, ensuring that the concentration process is efficient and does not damage the sample.
4. Condensation device:
Under vacuum conditions, the gas evaporated from the solvent will be directed to the condenser. The solvent gas evaporated in the condenser is cooled by a cooling device and converted into liquid, thereby achieving solvent recovery. In this way, not only is the solvent not wasted, but it can also avoid solvent gas pollution of the experimental environment.
5. Automated operation:
Modern vacuum centrifugal concentrators typically have automated control functions, including setting concentration time, speed, temperature, and other parameters. The system can automatically operate according to experimental requirements, reducing human errors and improving operational efficiency.
Summary:
The working principle of the Shanghai Yetuo vacuum centrifugal concentrator is to reduce the boiling point of the solvent in a low-pressure (vacuum) environment and increase the evaporation rate of the solution by combining centrifugal force, thereby efficiently removing the solvent and concentrating the solute. The function of vacuum is to lower the boiling point of solvents and avoid damage to heat sensitive substances, while centrifugal force accelerates the evaporation process of solvents. By using a temperature control system and condensing device, the stability of the samples and the recovery of solvents in the experiment can be ensured. This dual effect makes the vacuum centrifuge concentrator an efficient and reliable concentration device in the laboratory, widely used in various fields such as chemistry, biology, and pharmaceuticals.
