GB907642A - Separating device for separating foreign particles from a gaseous medium - Google Patents

Abstract

907,642. Centrifugal separators. JOY MANUFACTURING CO. Oct. 13, 1958 [Oct. 31, 1957], No. 32557/58. Addition to 858,897. Class 23. [Also in Group XII] In a modification of the apparatus of the parent Specification, wherein a gas, e.g. dustladen air, flowing in a conduit 11 is contacted with a liquid, e.g. water, by passage through a wetted screw 20, the separating device for removing particles entrained in the gas comprises an axially arranged core member 12, blades 46 to impart a rotary movement to the gas and entrained particles and a collecting chamber 13 for centrifugally separated entrained particles surrounding the conduit 11 and divided into a series of smaller chambers 50, each communicating with the interior of the conduit 11 through an opening 62, the downstream converging portion of the core member 12 tapering inwardly of the downstream aerodynamic flow profile of the gas stream permitting inward expansion thereof sufficient to induce a reverse flow of gas adjacent the surface of the core member and prevent liquid flowing along the surface of the core member to a point where it could be re-entrained in the gas and carried through the separating device. Towards the downstream end of the collecting chamber 13 the conduit 11 may contain a core having vanes for returning the gas to an axial flow. In a modification the downstream end of the core member 12 is truncated at a point beyond that at which the reversal of flow occurs.