# US 7,410,569 B1 · Filtration system for metalworking fluids > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,410,569 B1 - Document ID: US7410569B1 - Status: Granted - Kind: B1 - Application number: 11/164,339 - Filed: 2005-11-18 - Granted: 2008-08-12 - Earliest claimed: 2005-11-18 - Assignees: Turhan A. Tilev - Inventors: Turhan A. Tilev; John Wayne Nowicki; Kenneth Frederick Packer - Web page: https://patentgrep.com/patent/US7410569B1 ## CPC - B23Q 11/1069: {Filtration systems specially adapted for cutting liquids (filtration in general B01D24/00 - B01D41/00)} - B01D 21/0006: {Settling tanks provided with means for cleaning and maintenance} - B01D 21/0012: {Settling tanks making use of filters, e.g. by floating layers of particulate material} - B01D 21/04: with moving scrapers - B01D 29/15: arranged for inward flow filtration - B01D 29/52: in parallel connection - B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract A filtration system for metalworking fluids has panel filter elements arranged in cells in which the filter frames and panels are approximately parallel to one another. The filter frames are disposed such that the filter surfaces are oriented at an acute angle with respect to the longitudinal axis of the drag-out tank within which they are installed. The filter elements are constructed by affixing a microscreen filter to a wire mesh support structure. The wire mesh structure provides as much support as the perforated plates of the prior art, while featuring significant gains in effective filter area when compared with perforated plate constructions. ## Claims ### Claim 1 A filtration system for metalworking fluids, comprising: a drag-out, coolant cleaning tank having a longitudinal axis; a mechanical conveyor system for removing solid contaminants from the tank, with said conveyor system being oriented for motion along said longitudinal axis of the tank; a pump system for removing clean coolant from the tank and for backflushing a filter system housed within said tank; and a filter system mounted within said tank, with said filter system having a plurality of panel filters for receiving dirty coolant from said tank and for providing clean coolant to said pump system, with said plurality of panel filters being generally parallel to each other and oriented at an acute angle to said longitudinal axis. ### Claim 2 (depends on 1) A filtration system according to claim 1, wherein said filter system comprises a plurality of receivers, with each of said receivers having a plurality of panel filters attached thereto, and with each of said receivers being connected to said pump system. ### Claim 3 (depends on 1) A filtration system according to claim 1, wherein each of said panel filters comprises a generally rectangular frame having a plurality of microscreen filter elements supported by a wire screen substrate. ### Claim 4 (depends on 3) A filtration system according to claim 3, wherein each of said microscreen elements is welded to a wire screen substrate. ### Claim 5 (depends on 4) A filtration system according to claim 4, wherein said microscreen is electron beam welded to said wire screen substrate. ### Claim 6 (depends on 4) A filtration system according to claim 4, wherein said microscreen is spot welded to said wire screen substrate. ### Claim 7 (depends on 3) A filtration system according to claim 3, wherein each of said microscreen elements comprises a metallic sheet having a uniformly distributed plurality of openings, with each of said openings having a diameter ranging from about 0.005 inches to about 0.007 inches, and with said openings being disposed on centers of about 0.010 inches. ### Claim 8 (depends on 7) A filtration system according to claim 7, wherein said microscreen filter elements and said substrates are each fabricated from stainless steel. ### Claim 9 A filtration system for metalworking fluids, comprising: a drag-out, coolant cleaning tank having a longitudinal axis; a filter system mounted within said tank, with said filter system having a plurality of filter panels for receiving dirty coolant from said tank and for providing clean coolant to said pump system, with said plurality of panel filters being generally parallel to each other and oriented at an acute angle to said longitudinal axis; a pump system for removing clean coolant from the tank and for backflushing said filter system housed within said tank; and a mechanical conveyor system for removing solid contaminants from the tank and for causing unfiltered coolant to flow along said filter panels, with said conveyor system being oriented for motion along said longitudinal axis of the tank.