| 摘要 |
<p>The installation comprises a column revolving in both directions throughout at least 370o, arranged in the geometric axis of the tank. A height adjustable arm, upwardly and downwardly displaceable, is carried by the column. Its upper edge forms an arcuate line corresponding to the shape of the tank lid, whereas its lower edge is parallel to the tank bottom. A support member for the sprinkler heads of the auxiliary devices is guided along a path which passes both on the upper edge and on the lower edge of the arm. At least one of those auxiliary devices is displaceable by a drive device. Sprinkler heads are arranged at the free end of the arm for the treatment of the tank mantel. </p> |
