Patent ID: 6344138
Filing Date: 2002-02-05
Classification: C10M

Abstract:
Apparatus for regenerating a cooling emulsion stagnating in a tank of machine tools by aeration to suppress proliferation of anaerobic bacteria, the apparatus comprising:source of comprised air; a plurality of aeration pipes fluidly connected to the source of compressed air and having a plurality of holes; each pipe having an outer surface which is coated with sponge rubber layer made of a material resistant to oil components of the cooling emulsions; each hole having the same diameter and being located along the lower generatrix of each pipe such that air escaping therefrom crosses substantially all the sponge rubber coating and establishes a uniform spreading of microbubbles; and wherein the pipes which are closer to the source of compressed air have a lower number of holes than the pipe which are remote from the source of compressed air such that the quantity of microbubbles produced by each pipe is substantially the same throughout the tank.