Seal for a joint or juncture – Seal between fixed parts or static contact against... – Contact seal for other than internal combustion engine – or...
Reexamination Certificate
1999-05-25
2001-06-12
Knight, Anthony (Department: 3626)
Seal for a joint or juncture
Seal between fixed parts or static contact against...
Contact seal for other than internal combustion engine, or...
C210S511000, C210S513000
Reexamination Certificate
active
06244602
ABSTRACT:
This invention relates to a method especially for sealing the junction between the settler of an extraction apparatus and the overflow launder located at the far end of the settler. It is essential that the junction between the overflow launder and the settler, which is a non-circular profile joint, is sealed with an elastic seal.
Earlier settler constructions pertained to an extraction equipment have been mainly made of acid-resistant steel, in which case joining of the parts has managed reasonably. Now that the settler in particular is made of concrete and the launder can be made of acid-resistant steel or a glass fibre-type material, connecting the parts of the settler has become important, since changes due to heat expansion alone can cause leaks in otherwise tight junctions. Furthermore, ease of installation and replacement are important factors.
According to this invention, an overflow launder, located transversely seen from the flow direction in the settler and connected to the side walls of the settler at its far end, is sealed against liquid leaks at its joining points by one or more elastic sealing elements. The primary seal at the junction of the overflow launder and settler wall is formed by tightly pressable, elastic, hose-type sealing element, whose efficiency can be increased with other seal and support structures. The seal is preferably a hose-type sealing element, pressurizable by air, but it can also be a solid rubber profile. When in place, the seal is basically U-shaped. Then, according to this method, also a non-circular profile junction can be sealed with an elastic seal.
In addition to the pneumatic hose-type seal located between the structures, the seal can be further improved by placing a second elastic-type element around the junction. The additional seal is essentially flat and is fitted so that one edge is attached to the settler and the other to the launder construction.
The essential novel features of this invention become apparent in the attached patent claims.
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Blomqvist by Seppo
Färm Anu
Färm Kari
Färm Outi Kaarina
Färm Anu
Färm Outi Kaarina
Knight Anthony
Morgan & Finnegan , LLP
Outokumpu Oyj
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