A disc centrifuge is a precision equipment based on high-speed centrifugal separation technology, with its core components including a rotor bowl, a multi-layer conical disc stack, a feeding system, a discharging system, and a driving device. During operation, materials enter the high-speed rotating rotor bowl (with a rotational speed ranging from 3,000 to 15,000 rpm, capable of generating a centrifugal force field of several thousand to tens of thousands of times the gravitational force) through the central feed pipe. Under the action of centrifugal force, components with different densities are stratified along the narrow channels between the discs: the phase with higher density (or solid particles) is thrown toward the wall of the rotor bowl, moves toward the outer periphery of the rotor bowl along the lower surface of the discs, and is then discharged; while the phase with lower density gathers toward the center of the rotor bowl and is discharged through the central channel.
The design of the multi-layer discs greatly shortens the particle sedimentation distance, allowing the separation process to be completed within a few seconds. This equipment can efficiently achieve continuous separation of solid-liquid, liquid-liquid (or liquid-liquid-solid) systems, and is widely used in fields such as dairy products, food and beverage, biomedicine, petrochemicals, and environmental protection (e.g., milk skimming, edible oil refining, microbial cell separation from fermentation broth, oil-water separation, etc.).
