The Disc (butterfly) centrifuge is a highly efficient separation device widely used in various industries.

Structure 

It primarily consists of an inlet and outlet assembly, a rotating drum, a cover, a vertical shaft, a horizontal shaft, a base, a motor, and a PLC control box. The drum houses a stack of conical discs with small gaps between them, which are the core separation component. Additionally, there is a discharge mechanism, which varies depending on the type. There are manual discharge, continuous discharge by nozzle, and automatic discharge by valve.

Principle

Separation occurs by utilizing the principle that immiscible light and heavy phases (or solid phases) of different densities in a mixed liquid are subjected to different centrifugal forces in a centrifugal field, resulting in different sedimentation velocities. The material to be separated is fed through a feed pipe at the center of the bowl. As the mixed liquid flows through the gaps between the discs, the solid particles slide along the lower surface of the discs under centrifugal force and accumulate at the largest diameter point inside the bowl, forming a slag layer, which is then discharged through the slag discharge mechanism. The light phase of the liquid flows along the upper surface of the discs toward the center of the bowl, while the heavy phase of the liquid accumulates in the middle, close to the slag layer, and is discharged from the upper outlet of the bowl.

Function

It is mainly used for liquid-solid separation (clarification) and liquid-liquid separation or liquid-liquid-solid separation (separation). It can quickly and effectively separate liquids and solid particles with small density differences, and can handle particles ranging from 0.001 to 100 microns and materials with solids concentrations below 25%.

Applications

Mineral Oil Industry: Used for purifying fuel and lubricating oils in ship engines, land-based diesel engines, power plants, etc.

Dairy Industry: Used for clarifying, purifying, and degreasing fresh milk. Vegetable Oil Industry: Purification and clarification of palm oil, as well as degumming, soap removal, dehydration, and dewaxing during vegetable oil refining.

Beverage Industry: Clarification of beer, juice, and beverages, as well as plant protein extraction.

Pharmaceutical Industry: Purification or clarification during the extraction of antibiotics and biopharmaceuticals, as well as clarification of traditional Chinese medicines.

Other Industries: Applications include the lanolin, latex, and starch industries, as well as laboratories, petroleum, coking, and kaolin industries.