Equipment parameters
1. Speed: The speed is the key parameter that affects the separation effect of the horizontal screw centrifuge. The higher the speed, the greater the centrifugal force generated, and the better the separation effect is usually. However, too high a speed may cause material damage, so it is necessary to find the optimal speed.
2. Differential speed: The differential speed refers to the speed difference between the screw and the drum. The size of the differential speed directly affects the solid-liquid separation effect and the solid conveying efficiency. Appropriate differential speed setting helps to achieve better separation effect.
3. Separation factor: The separation factor is the ratio of the speed to the acceleration of gravity, which determines the size of the centrifugal force. The larger the separation factor, the better the separation effect.
4. Drum diameter and aspect ratio: The larger the drum diameter, the greater the centrifugal force on the material inside the drum, and the better the separation effect. The larger the aspect ratio, the longer the retention time of the material inside the drum, which also helps to improve the separation effect.
Operating conditions
1. Feed concentration: Feed concentration is an important factor affecting separation efficiency. Too high or too low concentration will affect the separation effect, and it needs to be adjusted to the optimal concentration according to the material characteristics.
2. Feed amount: The feed amount should match the processing capacity of the centrifuge. Excessive feed will lead to incomplete separation, while too little feed may reduce equipment utilization.
3. Operating temperature and pressure: Operating temperature and pressure will affect the physical properties of the material, and then affect the separation effect. Therefore, it is necessary to operate under appropriate temperature and pressure conditions.
Material properties
1. Particle size, density and viscosity: The material’s properties such as particle size, density and viscosity determine its behavior under centrifugal force. For example, liquids with high viscosity may be more difficult to separate because viscous forces will hinder the settling of particles.
2. Solid phase properties: The shape, hardness and compressibility of solids can also affect the separation process. Fragile particles may break during centrifugation, while highly compressible particles may be difficult to discharge from the drum.
3. Chemical stability: When handling certain chemical materials, their chemical stability needs to be considered. Some substances may react or change during centrifugation, which can affect the separation effect and product quality.
Equipment and Maintenance
1. Screw conveyor design: The screw diameter, pitch and blade angle will affect the separation efficiency and solid discharge. Therefore, it is necessary to select a suitable screw conveyor design according to the material characteristics.
2. Equipment wear and damage: Wear or damage to the equipment will affect the separation effect. In particular, the wear of the screw conveyor and the screen needs to be regularly inspected and replaced or repaired.
3. Cleaning and maintenance: Regular cleaning and maintenance of the horizontal screw centrifuge is the key to ensuring the separation effect of the equipment and extending its service life.
Other factors
1. Control system: An accurate control system can ensure that the centrifuge operates in the best condition and improve the separation efficiency.
2. Fluid dynamic characteristics: During the centrifugation process, the fluid dynamic characteristics (such as turbulence, laminar flow) have a significant impact on the separation effect. Optimizing the fluid path and reducing turbulence can improve the separation efficiency.
3. Operator skills: The skills and experience of the operator are essential to ensure the efficient operation of the centrifuge. They need to be able to accurately understand the working principle of the equipment and be able to respond quickly to various operational
problems.
4. Environmental factors: Environmental factors such as temperature fluctuations, humidity changes, etc. may also have an impact on the performance of the centrifuge. Therefore, these environmental factors need to be considered when choosing the installation location of the centrifuge and performing routine maintenance.