| 摘要 |
<p>This invention provides a mobile vacuum unit comprising a mobile frame on which a collection box is mounted. Snorkel intake means is adapted to draw air and entrained materials into the box through suction, and the box is adapted to dump collected materials at intervals. From the box an outlet leads to a two-way separating valve, and two further branches proceed from said valve. The first branch is utilized when the material coming from the collection box has a high liquid content, while the second branch is used for materials with a low or negligible liquid content. The first branch includes means, such as liquid swirl means, for separating liquid and entrained particulate matter from the gas in the material coming from the collection box, while the second branch passes the mixed material through a bag filter unit. Both branches re-combine at a two-way combining valve, and the outlet from the latter is in communication with the suction inlet of an air-pump, which exhausts through muffling means to the atmosphere.</p> |
