| 摘要 |
An essentially circular header is formed with an interior trough to which a supply duct for cleaning fluid, terminating therein tangentially so that cleaning fluid introduced through the supply duct into the trough of the header and flowing thereinto will be subjected to a swirling motion. The header terminates in a neck portion of substantially reduced diameter which has an outer conically converging surface which fits into a conically diverging surface of a flask, receiver, or other chemical apparatus to be cleaned. Preferably, the neck portion is shorter than the receiving end of the mouth portion of the receiver so that a swirling film of liquid will flow downwardly, by gravity, from the receiver through the neck portion and into the still converging mouth portion of the receiver to be cleaned, to then spread out along the inner walls of the receiver, while still swirling, and efficiently clean the receiver element, without requiring disassembly of the receiver element from remaining portions of the chemical analysis apparatus. |
