The hydrocyclone is a classifier that has two exits on the axis: the smaller on the bottom ( underflow or reject ) and a larger at the top ( overflow or accept ). The underflow is generally the denser or coarser fraction, while the overflow is the lighter or finer fraction. The characteristics of the feed stream includes-size distribution of solids in the feed stream, pulp density ( percent solids in the slurry ), pulp viscosity and the inlet pressure.
 

A hydrocyclone is most often used to separate "heavies" from a liquid mixture originating at a centrifugal pump or some other continuous source of pressurized liquid. A hydrocyclone is most likely to be the right choice for processes where "lights" are the greater part of the mixture and where the "heavies" settle fairly easily. Generally, hydrocyclones are used in continuous flow systems so that the instantaneous liquid inflowing to the hydrocyclone is equal to the total instantaneous outflow of "lights" plus "heavies". In cases where "heavies" are a very small part of the whole liquid, it is sometimes advantageous to accumulate them in the bottom of the hydrocyclone for batchwise removal.

Mostly, in oilfield solids control equipment, it is a typical solids removal device, in which the hydrocyclones are designed into special equipment named drilling mud desilter, oilfield desander or mud cleaner, a combined high effective solids-removal equipment including desilter, desander and shale shaker screens.

KOSUN can manufacture hydrocyclone for the solids control equipment used for oilfield drilling. At the same time, KOSUN can provide series drilling fluids solids control equipment, such as mud cleaner, drilling shale shaker, desander, desilter, decanter centrifuge, vacuum degasser, mud agitators and complete drilling fluids systems with abundant industrial manufactural experience.