The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 1999
Filed:
Nov. 26, 1997
Aldyr Witter, Sao Leopoldo, BR;
Antonio Jorge Schilling, Porto Alegre, BR;
Claudio Camilo Da Silva, Sao Leopoldo, BR;
Edu Correa Francisco, Sapucaia Do Sul, BR;
Artur Rogerio Marinho, Canoas, BR;
Abstract
The present invention relates to a system which makes it possible to remove undesirable liquids, generally an aqueous phase, which precipitate to the bottom of tanks for storing liquid products. Use is made of a drainage device (30) which comprises a concave body (31), a seat (26), and an interface float (8) which has a plug portion (25). This interface float (8) is designed to sink into the product and to float on the aqueous phase. As the level of the aqueous phase drops, the plug portion (25) settles sealingly on the seat (26), halting the drainage operation since all the accumulated aqueous phase has already been drained off. The drainage system may be automatic or manual. In the former case, use is made of a sensor (12) for detecting the presence of an aqueous phase and commanding the process of opening a shut-off valve (11) and allowing drainage of the accumulated aqueous phase. In the manual case, an operator periodically checks for the presence of an aqueous phase inside the storage tank (1), through a port (28) for inspecting the level. If such a phase were to accumulate, he opens a manual shut-off valve (29) so as to allow all the accumulated aqueous phase to drain away.