Vacuum flush assist system and process for handling machining cutting fluid

Abstract From the Canadian patent

A vacuum assist system and process for handling cutting fluid and chips collected, from a series of machine tools includes a closed header pipe extending below a series of sumps, associated with the machine tools the sumps draining into the header pipe. The header pipe has, a down leg extending vertically down to a filter tank which is opened periodically to drain the, header pipe developing a vacuum which assists the flow of liquid down the header pipe so as to, insure a sufficient flow velocity in the header pipe to carry the collected chips out of the header, pipe and into the filter tank with the cutting fluid