Centrifuge is the use of centrifugal force, separating liquid and solid particles or liquid mixture with the liquid components of the machine, also known as centrifuges.HC Education NetworkCentrifuge is the use of centrifugal force, separating liquid and solid particles or liquid mixture with the liquid components of the machine, also known as Centrifuge .
Centrifuge is mainly used for the breaking of solid particles and liquid separately; or emulsion in two different densities, but also separate immiscible liquids (for example, to separate cream from milk ); it can also be used to get out the wet solids in the liquid, such as wet and dry clothes with a washing machine dumped; special speed control separator can separate mixtures of gases of different densities, such as concentration, separation of uranium hexafluoride gas; the use of different density or the size of the settling velocity of solid particles in liquids of different characteristics, some centrifuge also by the absorption of solid particles or particle size classification. A large number of centrifuges used in chemical, petroleum, food, pharmaceutical, mineral processing, coal, water treatment, and shipbuilding sectors.
Ancient China, people living with the rope, one end of the pot, holding a lot at the other end, rotating lashing pots, squeeze out the centrifugal force generated in the berry juice pottery, which is the principle of centrifugal separation early stage.
Industrial centrifuge was born in Europe, such as the mid-19th century, has emerged with a three-textile dewatering centrifuge, and the crystallization of sugar, sugar used in the separation of suspended centrifuge. The first batch centrifuges are usable and labor slagging of.
Institutions as dumping slag to improve the 20th century, emerged 30 years continuous action of the centrifuge, centrifuge also due to intermittent operation to be developed to achieve the automatic control.
1879, the Swedish Laval invented the first isolated from milk cream separators, drum it but a hollow cylinder. Later, to make the axial superimposed drum conical disc, so that significantly improved separation and increased processing power, the Technology Progress led to the speedy development of disc-type separator. Centrifuge speed is gradually slow the rapid growth of the drum diameter also increases, improving the separation efficiency, improved processing power.
Industrial centrifuges, according to the building and separation requirements, can be divided into filter centrifuge, centrifuge and separator three. Separator only for separation of low concentration suspensions and emulsions, including the disc separator, tubular separator and the separator chamber.
Centrifuges have a high speed around its axis of rotation of the cylinder, known as the drum, usually set by the motor. Suspension (or emulsion) by adding after the drum was driven rapidly with the speed and drum rotation, the components under the centrifugal force separation, and were discharged. Typically, the higher drum speed, the better the separation.
Centrifuge principle role of centrifugal filtration and centrifugal sedimentation of two. Centrifugal filter is to go under centrifugal force field generated in the centrifugal pressure acting on the filter medium, so that the liquid into the air through the filter medium, while solid particles are trapped in the filter medium surface, in order to achieve liquid - solid separation; centrifugal sedimentation is the use of suspension (or emulsion) the density of different components in the centrifugal force field the regulation of rapid sedimentation layer, to achieve liquid - solid (or liquid - liquid) separation.
There is a quasi-experimental analysis with the separator, can be clarified liquid and solid particle concentration, or liquid - liquid separation, separation of particle size of 0.1 to 0.5 microns. For example commonly used test tube separator, its speed is 3000 to 20000 r / min, loading equal amount of satisfying to liquid put into a glass test tube rack or angular symmetry of the pockets of the rotor, the centrifugal force in vitro deposition of house to liquid stratification. High-speed analysis of the isolated village of small-diameter drum machine. Such separators are atmospheric pressure, vacuum, freezing conditions, operation of the different structural types.
Centrifuge separation measure an important indicator of performance is the separation factor. It said the material was separated by centrifugal force suffered in the basket with the proportion of gravity, the greater the separation factor is usually the more rapid separation, separation the better. Industrial centrifuge separation is generally 100 to 20000 print run, speeding the separation tube separator print run of up to 62,000, of separator with speed up the separation of print run of 610,000. Decision capacity centrifuge drum, another part is the work area, large play area capacity is too large.
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