Method of cleaning liquid cooling lubricants
AssigneesBayerische Motoren Werke Aktiengesellschaft, Filterwerk Mann & Hummel GmbH
InventorsReinhard Baumgartner, Karl-Guenther Bremer, Rudi Bungenberg, Walter Janning, Joachim Panhans, Eduard Rauscher
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Abstract
A method of cleaning mineral-oil-based liquid cooling lubricants in which the cooling lubricants, which are continuously circulated in metal-working plants, are cleaned by a deposition filtration system. A continuous or discontinuous inoculation or introduction of filtering aid material is carried out in the filtration circuit during the filtration of the liquid cooling lubricant.
Claims7
A method for cleaning a liquid cooling lubricant comprising the steps of passing used cooling lubricant contaminated with dirt and metal particles from a metal processing facility through a filter device to obtain a cleaned cooling lubricant, and returning the cleaned cooling lubricant to the metal processing facility for reuse, wherein in a first step a mixture of cellulose filtering aid material and clean liquid cooling lubricant is fed to the filter to deposit a precoat layer on the filter, and in a second step the same mixture of cellulose filtering aid material and liquid cooling lubricant is added to contaminated cooling lubricant fed to the filter for filtration.
Dependencies are inferred from the claim text.