摘要:
Separation of heavy tramp metal pieces from lighter weight machine tool turnings and chips is accomplished by apparatus and method in which turnings or chips containing tramp objects are moved along a conveying path and across an elongate free-fall area or region which is generally transverse to the conveying path. A stream of gas is directed through the free-fall area to blow the chips and turnings away from the free-fall area and into a separate processing path while the tramp objects fall through the free-fall area under the influence of gravity. In order to ensure than the tramp objects are properly dumped into the elongate free-fall area and do not bridge the free-fall area in the conveying path, an abutment member is placed along the elongate free-fall area for deflecting a leading portion of an elongate tramp metal object upwardly and/or sidewardly with respect to the conveying path. The tramp object thus becomes oriented so that it fits endwise and/or lengthwise within the elongate free-fall area and drops therethrough.
摘要:
Disclosed is an apparatus for separating a pellet-like product from fines (e.g., dust) mixed therewith. The apparatus includes a vertically disposed housing having an upper fines outlet and a lower product outlet. An inlet conduit passes through the housing intermediate the fines outlet and the product outlet and terminates in an upwardly facing inlet nozzle. The inlet conduit receives quantities of product and fines along with a propellant fluid (e.g., pressurized air). An impact baffle is supported within the housing having a concave impact surface that faces the inlet nozzle and that is positioned to intercept the product pellets issuing from the inlet nozzle. The impact baffle is sized and supported to provide an annular flow oriface for the propellant fluid (and fines mixed therewith) between the impact baffle and the housing. A second baffle, supported in the housing adjacent and above the impact baffle, is shaped to define an annular flow conduit that increases in cross section in a direction away from the annular flow oriface. Valve means control the exit velocity of the fines and propellant fluid through the fines outlet.