APPARATUS FOR CONCENTRATION OF POLYMERIC CRUMBS Russian patent published in 2002 - IPC

FIELD: equipment for working of suspensions of polymeric materials, in particular continues-operation apparatuses designed for raising the concentration of polymeric product, for example, crumb of synthetic rubber in a whirled flow of water. SUBSTANCE: the apparatus has a cylindrical body with a cover and a tapered bottom. The body and the bottom are provided with a coaxial branch pipe for discharge of concentrated polymeric crumb and a pipe for feeding of water for dilution. The apparatus has a tangential branch pipe for feeding of the source mixture and a branch pipe for discharge of clarified water connected to the tapered bottom, installed in the opposite parts of the body, and a gas feed line. The branch pipe for discharge of concentrated polymeric crumb in its lower part is provided with a separator consisting of a set of plates. The latters are made in the form of a truncated cone with a slope of the generating lines exceeding the slope of repose of polymeric crumb. The plates are installed in a spaced relation to one another. The upper diameters of the plates are made variable in the length of the separator and make up an internal duct in the form of a reverse cone. The pipe for feeding of water for dilution is inserted in the internal duct and communicates with the gas feed line. The branch pipe for discharge of clarified water is installed in a spaced relation coaxially to the pipe for feeding of water for dilution. EFFECT: enhanced reliability in operation, prevented interaction of phases in the process of separation, provided an additional differential of densities in liquid and gas-liquid mixture. 1 dwg