The bowl driven by the motor through the friction clutch spiral gear pair rotates around the center of the mainshaft at a high speed. stock liquid flows into the bottom of bowl's wall through the bottom edge of disc seats and their holes. solid material settles into the inner surface wall of the bowl and forms into the residue will be discharged manually after the machine stops. light liquid flows along up the outer tapered surface of discs to the mainshaft center. passes through the light liquid centripetal pump and drains out from the light liquid outlet. heavy liquid flows along the inner tapered surface of disc down to the bowl's wall and then passes through the heavy liquid centripetal pump and drains out from the heavy liquid outlet.

It is used for separation of emulsion and solid material which their suspension contents 1-5% for example. regeneration of fuel oil and lubricant separation of gum. nitroglycerine and extraction of tetracycline. bacterium, penicillin, biological alkali and dairy products.