Patent ID: 7077954
Filing Date: 2006-07-18
Classification: B23Q,F04D,Y02P

Abstract:
1. Apparatus for recirculating machine tool coolant and entrained debris flowing in a shallow depth stream within a flow channel to a filtration apparatus, said apparatus comprising: a housing having an inlet opening connected to said channel to receive said flowing stream of coolant onto a bottom wall of said housing; a bladed wheel rotatably mounted within said housing and a drive motor for rotating said bladed wheel therein; said bladed wheel having a plurality of outwardly extending blades attached to a hub structure, said blades generally conforming to the cross sectional shape of an interior shape in said housing receiving said stream of flowing coolant and rotated in the same direction of said stream flow, said blades each having an outer edge passing over said bottom wall and sweeping said coolant in said stream therealong; said housing interior space defined by a wall surface curving upwardly along the path which said outer edges of each of said blades move so as to enable said coolant to be swept therealong and upwardly by rotation of said bladed wheel; said upwardly curving surface extending to a rearwardly and upwardly extending exit wall having a weir edge defined at an upper region thereof, coolant slung over said weir edge entering a discharge chute; said bladed wheel rotated by said drive motor to achieve sufficient blade velocity to sweep coolant upwardly and to sling said coolant up said exit wall, over said weir edge and into said discharge chute; a magnetized body disposed at a lower level below said discharge chute to receive descending coolant and debris so as to bring ferrous debris into contact therewith to be captured thereon by magnetic attraction; a collection tank receiving coolant flowing off said magnetized body; and a pump associated with said collection tank causing coolant and remaining debris collected in said collection tank to be circulated to said filtration apparatus.