| 摘要 |
A system for conveying liquid or particulate material from a first location to a second location. The system is utilized in combination with an elongate barrel (16) having a discharge end (20). A plenum chamber (30) is placed around the barrel (16). A frustoconical air reduction cone (32) is contained within the plenum chamber (30). The reduction cone (32) has a narrower open end (45) which is coupled to an interior front wall (46) of the plenum chamber (3) so as to surround the barrel (16). The narrower open end (45) surrounds and communicates with a port (46a) in the front wall (46) through which the barrel (16) extends. The port (46a) and the barrel (16) thus form an annular constriction therebetween. Pressurized air is injected into the plenum chamber (30) which is drawn into the cone (32) and passes through the annular constriction in the form of a continuous annular stream of pressurized air enveloping the discharge end (20) of the barrel (16). The stream of air carries any material discharged from the barrel along a movement path.
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