GB898689A - Improvements in or relating to spark arrester or dust separator apparatus - Google Patents

Abstract

898,689. Centrifugal separators. PRATDANIELS (STROUD) Ltd. Oct. 31, 1960 [Nov. 18, 1959], No. 39136/59. Class 23. [Also in Group X] A centrifugal spark arrester and dust separator comprises a main dust collection chamber 11 into which projects an inlet pipe 10 and outlet pipe 12, the lower end of which is coaxially mounted within the inlet pipe but spaced therefrom to form a space 13 for the passage of dust into the chamber 11 which has been centrifugally extracted from the gases entering through the inlet pipe by a whirling gas flow produced by the tangential introduction of air through nozzles 20 in the inlet pipe by means of a fan (not shown). The dust on entering the chamber is deflected by baffles 16 to deposit the heavier dust particles or sparks and the finer dust or sparks are carried into secondary collection chambers 15 for collection in hoppers 17 by a flow of air induced by the upward flow of gases through the inlet pipe producing a suction effect at the upper end of a tubular member 19 coaxially arranged in spaced relation within the lower end of the inlet pipe 10, which member communicates through conduits 18 with the chamber 15. Instead of the nozzles 20 and fan, stationary inclined blades may be arranged in the pipe 10 to produce the whirling gas motion and instead of two secondary collection chambers any other number may be utilized.