Abstract: 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.

Abstract: A flume system for use with a floor mounted filtration apparatus and a floor mounted in-line machine section is provided. The machine section receives a flow of clean coolant from the filtration apparatus and has a series of machine outlets for outputting dirty coolant carrying particulate generated by the machine section. The system includes an elongated floor mounted flume disposed adjacent the series of machine outlets to receive the machine outputted dirty coolant. The flume has a slope of less than 2% and is coupled at an outlet end to the filtration apparatus. A discharge pipe is mounted adjacent a distal end of the flume for introducing a stream of coolant into the flume in a direction generally toward the outlet end. The stream of coolant introduced into the flume causes the flume to have an efficient hydraulic radius such that a minimal amount of coolant flows within the flume at a sufficient velocity to wash away the particulate from the flume into the filtration apparatus.

Abstract: An improved filter apparatus includes an upper tank for holding dirty liquid and has a perforated plate. A lower compartment is beneath the plate for receiving liquid from the upper tank. A permanent filter belt for filtering particulate from the dirty liquid is arranged in a first circulating path across the plate. A first pair of drive loops are attached on respective sides of the belt. A drag conveyor having flights is arranged in a second circulating path across the plate. The belt is positioned between the plate and the flights of the conveyor across the plate. A second pair of drive loops are attached on respective sides of the flights. A driving mechanism is operable with the drive loops for indexing the belt and the conveyor along the circulating paths such that a fresh segment of the belt is periodically indexed over the plate while a dirty segment of the belt is being cleaned and the flights of the conveyor carry away accumulated particulate filtered by the belt.

Abstract: Solid particles with entrained liquid are removed from a filtration tank and deposited on a chute inlet to a pair of rollers. One roller is pressed toward the opposite roller such that the solid particles pass through the nip of the rollers and the liquid is squeezed therefrom. The solid particles are scraped from the rollers on the outlet side of the deliquifier for collection. The liquid is collected on the inlet side of the rollers for reuse.

Abstract: A vacuum filter having a filter tank provided with a lower vacuum chamber covered with a filter medium and connected to the intake of a pump. The filter medium, either a paper web or a fibrous filter aid, is removed when contaminated by a chain and flight conveyor after the vacuum is relieved. The vacuum is relieved by a single power actuated valve operable to supply clean liquid to the pump from a clean liquid tank and to supply a limited amount of liquid to the vacuum chamber.

Abstract: An apparatus for and method of preventing the build-up of particulate waste, such as machining chips, on the surface of a body of machining coolant having a filtration apparatus immersed therein. Machining chips of light metals, such as aluminum, magnesium, titanium, and the like, generally have a large surface area and, particularly in the presence of tramp oil, tend to accumulate on the surface of a body of coolant. The present invention proposes bubbling air or other suitable gas upwardly through the body of coolant, the air bubbles increasing in volume as they rise through the coolant body and bursting at the surface to wet the machining chips with coolant, so that the chips sink into the body of coolant for removal at the chip-coolant separating means immersed in the body of coolant. The air can be introduced intermittently or continuously through a perforate conduit which, in a preferred embodiment of the invention, is incorporated into the separating means.

Abstract: An easily removable tubular filter assembly, such as from a cylindrical array of parallel filter tubes arranged between two spaced parallel circular plates, which array is immersible in a liquid to be filtered. Each filter tube comprises a central open-ended perforated rigid tube with flanged tubular bushings for each end, and a fabric tubular sock which surrounds the perforated tube and tucks in the ends of the tube around the outer flanges of said bushings. A flanged tubular ferrule snugly fits in the bushing at one end of the fabric-covered tube to hold the tucked-in sock in place and seal its flange into an aperture in a wall of a suction chamber which may comprise one of the parallel circular plates of the array assembly.

Abstract: The disclosure concerns an apparatus for separating various sizes, shapes, and textures of solid particles from a liquid, comprising: a settling tank having an elongated ramp at one end with a scraper flight conveyor, driven at the upper end of the ramp, to scrape settlings from the bottom of the tank up the ramp out of the tank; and at least one cylindrical rotatable filter drum assembly snapped between spaced rigid guide and supporting brackets in the tank. An axial end of the filter drum has a ball duct seating in a socket duct connected to the intake of a continuously-operating pump for circulating filtered liquid to the machine tools with a bypass into a clean tank that overflows into the settling tank. The other end of the filter drum assembly is axially outwardly resiliently pressed, such as by a spring against an opposite wall of the tank, to urge the ball and socket joint together.

Abstract: A settling tank having a flat bottom and an inclined side extending from an arcuate corner along one side of said bottom, a drag-out conveyor means along said bottom around said arcuate corner and up said inclined side, and a mechanism for permitting the idler sprocket or roller of the conveyor to move away from said arcuate corner to prevent jamming, as well as to control the thickness and/or to sense the drag of the settlings on the bottom of the tank. This conveyor hold-down control mechanism comprises an adjustable elongated means parallel to said inclined side, pivoted at one end above the normal surface of liquid in said tank, and at the other end to the idler sprockets or rollers for the conveyor at the arcuate corner, for normally resiliently urging said idlers into said corner, as well as indicating when said idlers move away from said corner by encountering foreign objects which otherwise would jam the conveyor.

Abstract: The disclosure concerns an apparatus for separating various sizes, shapes, and textures of solid particles from a liquid, comprising: a settling tank having an elongated ramp at one end with a scraper flight conveyor, driven at the upper end of the ramp, to scrape settlings from the bottom of the tank up the ramp out of the tank; and at least one cylindrical rotatable filter drum assembly snapped between spaced rigid guide and supporting brackets in the tank. An axial end of the filter drum has a ball duct seating in a socket duct connected to the intake of a continuously-operating pump for circulating filtered liquid to the machine tools with a bypass into a clean tank that overflows into the settling tank. The other end of the filter drum assembly is axially outwardly resiliently pressed, such as by a spring against an opposite wall of the tank, to urge the ball and socket joint together.