| 摘要 |
Apparatus including a support; first tubular conduit of gas impermeable material having open and closed ends providing an axially disposed passageway with at least one radial outlet; a second tubular conduit of gas permeable material encompassing and spaced from such first tubular conduit, having closed ends, providing a first annular passageway communicating with the radial outlet; a third tubular conduit of gas impermeable material mounted on such support, encompassing and spaced from such second tubular conduit, providing a second annular passageway having open and closed ends and having an inlet at such closed end, a helical member mounted coaxially on such second tubular member, and a device for rotating the first tubular conduit and method using same wherein air under pressure travels from the axially disposed passageway, through the radial outlet into the first annular passageway and through the gas permeable material into the second annular passageway. |
| 主权项 |
1. An apparatus for handling a fine bulk material comprising:
a support; a first tubular conduit formed of a gas impermeable material journalled in said support, having a closed end providing an axially disposed passageway with at least one radial outlet; a second tubular conduit formed of a gas permeable material, encompassing and spaced from said first tubular conduit, having closed ends, providing a first annular passageway communicating with said radial passageway in said first tubular conduit; a third tubular conduit formed of a gas impermeable material mounted fixedly on said support, having an inlet adjacent an end thereof, encompassing and spaced from said second tubular conduit, providing a second annular passageway closed at one end, opened at a spaced outlet end and communicating with said inlet of said third tubular conduit, adjacent said closed end thereof; a helical member mounted coaxially on the second tubular conduit, in the second annular passageway, between the closed and spaced outlet thereof whereby air under pressure enters into said axial passageway and passes from the axial passageway through said radial outlet into said first annular passageway and through interstices of said permeable tubular conduit, into spaces between flights of the helical member sufficient in precluding the settling of said material in said second annular passageway, between flights of said helical member; and means for rotating said first tubular conduit, wherein a pair of annular sealing components close the first annular passageway at the opposite ends and space the second intermediate tubular conduit from the first tubular conduit, wherein one said annular sealing component is respectively at each of the opposite ends of the first annular passageway. |
