| 摘要 |
A self-cleaning filter (2) for pressure vessels, particularly for liquefied gas containers (1), comprises a filter chamber (4) into which a pipe (3) for the passage of the liquefied gas leads, a first filter surface (11) positioned in the chamber, valve means (9) for by-passing the first filter surface for bringing liquefied gas into the container during the filling of the latter without passing the gas through the first filter surface, the valve means being opened in the chamber in such a way that the liquefied gas brought in to fill the container causes a flushing of the chamber and of the first filter surface, and means (15) for temporarily retaining suspended impurities in the liquefied gas against the walls of the said chamber (4) during delivery and for releasing them when flushing takes place during the filling of the container. |
