Disc centrifuge is a vertical centrifuge with the drum mounted at the upper end of the vertical shaft. Driven by a motor through a transmission device, the drum rotates at high speed. Inside the drum, there is a set of stacked disc-shaped components (discs). The disc centrifuge utilizes the centrifugal force generated by high-speed rotation to achieve the separation of various immiscible and differently dense materials.
Basic Principle:
Centrifugal separation is a method of achieving liquid-liquid separation and liquid-solid separation in an uneven liquid phase system, collectively referred to as centrifugal separation. Disc centrifuges can be used for both liquid-solid separation and liquid-liquid separation.
Liquid-Solid Separation
During liquid-solid separation, the suspension enters the drum through the central feed pipe and flows from the outer edge of the disc pack to the inner edge through the gaps between the discs. As the untreated liquid flows into the gaps between the rotating discs, inertia centrifugal force is generated. Solid particles with higher density move toward the lower surface of the upper disc under the action of centrifugal force. Subsequently, they slide down along the lower surface of the disc toward the periphery of the rotor, while the liquid rises along the center of the rotor and is discharged from the casing, achieving the purpose of separation.
Liquid-Liquid Separation
For liquid-liquid separation, the emulsion enters the gaps between the discs through the feeding holes on the disc pack, and it separates into heavy liquid and light liquid based on different densities. The heavy liquid flows along the inner surface of the discs toward the drum wall, while the light liquid flows toward the center. They are respectively discharged through the overflow port and the centripetal pump.
