This machine has suitability for different well drilling procedure and high process capacity. It can separate out the ultra micro harmful solid-state grains in the mud. At the same time, the transporter blade in this machine is inlaid with hard alloy block that elongates its service life considerably. Application of this machine is used mainly for controlling the density and viscosity of the well drilling liquid, reducing the solid state content, removing harmful solid state or recovering heavy crystal, and performing second recovery in the bottom steam of the cyclone so as to guarantee the super characteristic of the well drilling liquid and heighten the well drilling speed