Abstract: A centrifugal liquid cleaner comprising a vertical hollow axle fixed immovably on a base and having a liquid inlet and outlet and carrying a cylindrical rotor made up of a bushing arranged coaxially with the hollow axle and wound spirally with a band whose adjacent turns contain spacers arranged radially one after another parallel with the hollow axle and forming, together with the band, gaps for the passage of the liquid, and impellers installed at the ends of the bushing and made in the form of discs with ribs intended for fastening the edges of the spacers. The impeller discs are made and secured in such a manner that the distance between each disc and the corresponding edge of the band helix satisfies the condition: ##EQU1## where: l.sub.1 =distance between the disc of one impeller and the corresponding edge of the band helix;l.sub.2 =distance between the disc of the other impeller and the corresponding edge of the band helix;R=maximum radius of the band helix;r=moving radius of the band helix;r.sub.

Abstract: A centrifugal fluid cleaner consists of a vertical hollow shaft fixed rigidly to a base and provided with conduits for the supply and removal of fluid in the upper part of the shaft and a cylindrical rotor rotatably mounted on the hollow shaft. The rotor comprises a casing accommodating an inside sleeve installed coaxially with the hollow shaft and carrying a band coiled around the sleeve in a helical manner, spacers, installed between adjacent turns of the helical band so as to form a plurality of slots within the helical band to permit passage of the fluid, and impellers installed at both ends of the sleeve so that the lower impeller is located in a bottom cavity communicating with the fluid inlet conduit in the hollow shaft and the upper one in a chamber communicating with the fluid outlet conduit in the hollow shaft.

Abstract: A centrifugal liquid cleaner comprises a vertically extending hollow axle fixedly secured to a base, the axle having an inlet and an outlet for liquid. The axle supports a cylindrical rotor having a casing accommodating a sleeve which is coaxial with the hollow axle and has a band wound in a spiral and fixed to the sleeve, and spacers are mounted in a succession in the radial direction between adjacent turns of the spiral to extend in parallel with the hollow axle, the spacers defining, with the band, apertures for the passage of liquid. The band has longitudinally extending ridges verticaly spaced along the entire height thereof cambering towards the hollow axle. This construction of the centrifugal liquid cleaner enables an improvement of fineness of liquid cleaning by several times.