초록 ▼

An apparatus for removing floating and subsurface contaminants from a machine tool coolant bath is disclosed. The apparatus comprises a floating skimmer for collecting floating contaminants from the surface of the bath connected to an oil trap having an imperforate shell with a fluid tight column ex

An apparatus for removing floating and subsurface contaminants from a machine tool coolant bath is disclosed. The apparatus comprises a floating skimmer for collecting floating contaminants from the surface of the bath connected to an oil trap having an imperforate shell with a fluid tight column extending below the interface. A return conduit and a positive displacement pump are in series with the skimmer and oil trap. A submersible pump is disposed in the bath near the bottom for collection of water and water density contaminants and is connected to a remote filter assembly having a housing and a removable filter element. The filter assembly and the oil trap are both accessible without affecting the operation of the machine.

대표청구항 ▼

[ What is claimed is:] [1.]1. An apparatus for removing both floating contaminants and subsurface contaminants from an oil-containing coolant bath associated with a given machine, said apparatus comprising, in combination, a floating skimmer for picking up floating contaminants and water from the up

[ What is claimed is:] [1.]1. An apparatus for removing both floating contaminants and subsurface contaminants from an oil-containing coolant bath associated with a given machine, said apparatus comprising, in combination, a floating skimmer for picking up floating contaminants and water from the upper surface of said coolant bath, and an oil trap, an inlet conduit for connecting said skimmer to said oil trap, and a conduit for return of said liquid to said coolant bath, a positive displacement pump in series with said conduits and said oil trap, said oil trap having an imperforate exterior shell and an inlet and an outlet, and including an interior, fluid-tight column extending substantially below the interface between said oil and water in said oil trap, said column communicating at its upper end with said oil trap outlet, said apparatus further comprising a submersible pump disposed in said coolant bath near the bottom thereof and adapted to transfer water and generally water density contaminants therefrom to a remote filter assembly, said filter assembly including an imperforate exterior housing, a filter inlet and a filter outlet and at least one removable filter element disposed between said filter inlet and said filter outlet, said element presenting a large surface area in relation to the volume of said housing, said oil trap and said filter assembly both being accessible for removal of said at least one filter element and for disposing of said oil in said oil trap without affecting the operation of said machine.