Floor mounted double containment low profile sump pump assembly

摘要

A floor mounted sump pump assembly for pumping particulate laden dirty coolant discharged by a floor mounted machine tool station includes a sump tank having a cylindrical wall spaced around a central axis and an inclined bottom with a central lower region. A pump is positioned within the sump tank offset from the central axis. The pump has an inlet oriented above and adjacent to the central lower region. A conduit has an outlet coupled to the sump tank for discharging dirty coolant from the machine tool station into the sump tank. The discharged dirty coolant swirls down around the inclined bottom to the central lower region for the pump inlet to pump the dirty coolant out of the sump tank. An overflow tank is adjacent to the sump tank to collect overflow coolant from the sump tank. A return pump is operable with the overflow tank to discharge the overflow coolant back into the sump tank. The sump tank is sized sufficiently small to maintain a sufficient coolant swirl velocity to prevent particulate from settling out.