Abstract: Equipment for continuously separating foreign matters from unpurified liquid papermaking materials. Cyclone separators are disposed radially around and equidistantly from a central structure. Each of these cyclone separators has a chamber for collecting purified liquid papermaking materials, a cyclone chamber for separating liquid papermaking materials, and a cyclone vortex chamber for separating heavy foreign matter further into relatively light foreign matter and relatively heavy foreign matter, these chambers being disposed in this order from above. The central structure is partitioned into intermediate chambers. Main pipes enter respective intermediate chambers which are connected by brach pipes to the chambers of all the cyclone separators. Secondary cyclone separators, about the same in construction as the cyclone separators, receive the above-mentioned relatively heavy foreign matter and separate them again.