summary
Centrifuge is a machine that uses centrifugal force to separate liquid from solid particles or liquid mixtures. Centrifuges are mainly used to separate solid particles from suspended liquids; Or separate two immiscible liquids with different densities in the emulsion (such as separating cream from milk); It can also be used to dehumidify liquids in solids, such as washing clothes with a washing machine; The special ultra-high speed tubular separator can also separate gas mixtures with different densities; Some settling centrifuges can also classify solid particles according to their density or particle size, and the settling speed of solid particles with different density or particle size in liquid is different.
Centrifuges are widely used in chemical industry, petroleum, food, pharmacy, mineral processing, coal, water treatment and shipping.
The choice of centrifuge should be based on the size and concentration of solid particles in suspension (or emulsion), the density difference between solid and liquid (or two liquids), the viscosity of liquid and the characteristics of filter residue (or sediment).
There are many kinds of laboratory centrifuges (1), which can be divided into desktop centrifuges and vertical centrifuges (floor centrifuges) according to their structures.
2. According to the separation method, it can be divided into filtration centrifuge and sedimentation centrifuge.
3. According to speed, it can be divided into low-speed centrifuges, high-speed centrifuges and ultra-high-speed centrifuges.
4. According to the capacity, it can be divided into micro-centrifuges (micro-centrifuges or mini-centrifuges), small-capacity centrifuges, large-capacity centrifuges and ultra-large-capacity centrifuges.
5. According to whether there is freezing or not, it can be divided into freezing centrifuge and normal temperature centrifuge.
6. It can be divided into medical centrifuges, biological centrifuges, medicine centrifuges, chemical centrifuges, food centrifuges, dairy centrifuges, cream centrifuges, fat centrifuges, beauty centrifuges, blood centrifuges, blood bank centrifuges, serum centrifuges, plasma centrifuges, enzyme-labeled plate centrifuges, special centrifuges, laboratory centrifuges, rare earth centrifuges, mineral centrifuges, pulp centrifuges, mineral powder centrifuges, rock centrifuges and geotechnical centrifuges. Coal centrifuges, slime centrifuges, coal tar centrifuges, coal centrifuges, sewage centrifuges, wastewater centrifuges, petroleum centrifuges, crude oil centrifuges and oil field centrifuges.
In addition, there are many kinds of laboratory centrifuges, such as multi-tube rack centrifuges and automatic balance centrifuges.