Disc centrifuge, as an efficient solid-liquid or liquid-liquid separation equipment, is widely used in chemical, pharmaceutical, food and other industries. One of its core components is a set of discs that are nested together. These discs are arranged with a small gap in the drum, which significantly increases the sedimentation area and shortens the sedimentation distance of particles, thereby improving separation performance. However, the key parameter of the disc spacing has a profound impact on the performance of the disc centrifuge.
Adjusting the disc spacing directly affects the flow characteristics and separation effect of the disc centrifuge. The optimal spacing can make the flow and concentration distribution in the gap between each layer of discs uniform, thereby improving the separation efficiency. This not only helps to form an effective sediment or liquid layer under the action of centrifugal force, but also minimizes energy consumption and operational instability, and extends the service life of the equipment.
When the distance between the discs is either too large or too small, it can negatively impact the performance of the disc centrifuge. A larger disc spacing can lead to turbulent fluid flow between the discs, resulting in reduced contact between particles and discs and ultimately affecting separation efficiency. Conversely, a smaller disc spacing may increase the contact area between particles and discs, but can also obstruct fluid flow and potentially cause blockages. This not only decreases separation efficiency but also increases energy consumption and maintenance costs for the equipment.
When utilizing a disc centrifuge, it is crucial to modify the disc spacing according to the unique properties of the substance. For example, when isolating milk fat, the recommended range for the disc spacing is between 0.5mm and 1.5mm. This range must be adjusted based on factors like the fat content in the emulsion and the size of the milk fat particles to guarantee the centrifuge operates optimally and consistently. In cases of low fat content, reducing the disc spacing can enhance efficiency, while increasing the spacing can prevent blockages in high fat content situations.
When using disc centrifuges, the spacing between discs plays a crucial role in their performance during classification. This is due to the changes in the separation area’s geometric properties, which affect fluid mechanics and the interaction between particles and fluid. To achieve optimal classification, it is important to select the appropriate disc spacing based on material characteristics and separation requirements.
