| 摘要 |
An apparatus for assisting in filling a container from a hopper containing a supply of particulate material is provided. The apparatus includes a conduit operably connected to the hopper and extending downwardly therefrom. The conduit is adapted to permit a flow of particulate material therewithin. The apparatus also includes a nozzle assembly operably connected to the conduit and extending downwardly therefrom. The nozzle assembly defines an inlet thereof for receiving particulate material from the conduit and defines an outlet thereof for dispensing particulate material from the nozzle assembly to the container. A conveyor within the conduit assists in providing the flow of particulate material from the hopper to the container. Within the nozzle assembly is a porous nozzle with dimensions selected so as to provide a ratio of the inlet cross sectional area to the outlet cross sectional area and selection and application of an air boundary layer to the inner surface of the porous nozzle to maximize the porous nozzle's compression ratio and thereby maximizing the diameter of the conduit with respect to the container opening such that the flow of particulate material does not seize as it progresses through the nozzle.
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