| 摘要 |
An air-powered vacuum-producing apparatus or vacuum tool is disclosed which may be utilized in combination with a discharge collection assembly to pick up and collect debris, dust and liquids. The apparatus may be powered by any suitable, relatively high pressure gaseous medium such as compressed air. The apparatus includes a body having an elongated central chamber and a high pressure inlet, a suction inlet and a discharge outlet in communication with the chamber. The high pressure inlet is located downstream of the suction inlet and injects pressurized gaseous fluid into the chamber so as to more efficiently create a reduced pressure area or vacuum adjacent to the suction inlet. The body may be provided with first and second interconnected body portions respectively having first and second interconnected chamber portions. Conduit means, such as an extension pipe, may be used to allow the high pressure fluid to come through an upstream endwall in the first body portion, and pass through the first chamber portion into the second chamber portion so as to place the high pressure inlet at the distal end of the pipe in the second chamber portion. The discharge collection assembly includes a collection container or drum in communication with the discharge outlet of the vacuum tool by a flexible discharge hose which may be substantially larger in diameter than the discharge outlet and up to 50 or more feet in length. The collection container may be provided with a cover having an opening therein over which a filter bag assembly is located to allow discharged gaseous fluid to be exhausted to the atmosphere while simultaneously preventing dust and other debris which has been collected from being exhausted.
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