The important solids control component hydrocyclone

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.
In oilfield drilling mud solids control system, hydrocyclone is usually installed on mud desilter, desander and mud cleaner. It is the most important solids control component for them.

For the work principle of hydrocyclones, it works like this. First, the drilling fluids is sucked up to 0.25Mpa ~ 0.4Mpa by sand pump, and enters into the cones through the side inlet which is normally only 2-1/2″ in diameter. The fluids then flows spirally inside of the cone. Effected by the centrifugal force, the heavy solids in the fluids would be thrown towards the inner wall of the cones, go down to the bottom, and discharge through the sand discharge port, while the light fluids would go up and discharge through the upper outlet. The diameter of the bottom discharge port is adjustable, and with a cover of hydrocyclone.