초록 ▼

A system and method are disclosed for collecting cutting fluid and chips from a number of machine tools and includes a series of sumps each collecting chips and fluid at a particular machine tool, and a central sealed collection tank drawing from all of the sumps by drawpipes inserted in each sump.

A system and method are disclosed for collecting cutting fluid and chips from a number of machine tools and includes a series of sumps each collecting chips and fluid at a particular machine tool, and a central sealed collection tank drawing from all of the sumps by drawpipes inserted in each sump. A single large capacity pump pumps to filtration equipment, with a predetermined vacuum level maintained in the tank by opening and closing an outlet valve between the pump and the filtration equipment. A level switch at each sump causes intermittent opening of an associated valve causing each sump to be placed in communication with the vacuum in the collection tank, and random opening of the valves causes individual sumps to be emptied by the full suction at the collection tank. The drawpipes are equipped with antivortex end shapes to allow rapid evacuation without drawing air into the system. A vacuum pump removes excess air accumulating in the collection tank.

대표청구항 ▼

A method of collecting liquid from a plurality of locations to be filtered in filtration equipment, said method comprising: disposing an individual sump at each location so as to receive said liquid to be filtered; providing a single sealed collection tank containing liquid and connecting all of sai

A method of collecting liquid from a plurality of locations to be filtered in filtration equipment, said method comprising: disposing an individual sump at each location so as to receive said liquid to be filtered; providing a single sealed collection tank containing liquid and connecting all of said individual sumps with said sealed collection tank with drawpipes, each having one end extending into said sealed collection tank; and pumping liquid from said sealed collection tank out to said filtration equipment to generate a vacuum in said sealed collection tank and enable drawing liquid from each sump into said sealed collection tank and back to said filtration equipment; opening a drawpipe valve whenever the liquid level reaches a predetermined level in a respective sump, said predetermined level above the level of said one end of each drawpipe, said valves opened so that periodically the suction generated by said vacuum in said sealed collection tank is applied to a single sump to cause a rapid drawdown of liquid therein.