# US 2014/0360375 A1 · Paint booth with purifier > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0360375 A1 - Document ID: US20140360375A1 - Status: Published application - Kind: A1 - Application number: 14/317,230 - Filed: 2014-06-27 - Published: 2014-12-11 - Earliest claimed: 2013-06-07 - Assignees: BUNRI Incorporation - Applicants: BUNRI Incorporation - Inventors: Minoru TASHIRO; Makoto TASHIRO - Web page: https://patentgrep.com/patent/US20140360375A1 ## CPC - B01D 47/022: {by using a liquid curtain (B01D47/06 takes precedence)} - B05B 14/462: and separating the excess material from the washing liquid, e.g. for recovery - B05B 14/465: using substantially vertical liquid curtains or wetted walls behind the object to be sprayed - B01D 2247/04: Regenerating the washing fluid - B01D 2247/105: by gas flow reversal - B01D 2247/14: Fan arrangements for providing induced draft - Y02P 70/10: Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working - 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) - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A paint booth is provided with a booth body and a purifier. The purifier is provided with a water tank, water rope formation mechanism, sludge removal mechanism, exhaust mechanism, barrier member, inclined plate, and windshield plate. Water falling from nozzles of a water case forms water ropes. The inclined plate has a water receiving surface sloping forwardly down from the barrier member toward a water surface of the water tank. A lower end of the windshield plate is in contact with water in the water tank. An airflow reversal section is formed between a lower end of the inclined plate and the water surface. Air directed downward from an airflow inlet is turned upward at the airflow reversal section and directed to an exhaust chamber through air circulation sections. ## Claims ### Claim 1 A paint booth with a purifier, comprising: a booth body comprising a coating chamber and a booth opening; a water tank disposed in a lower part of the booth body; a water rope formation mechanism comprising a water case disposed in an upper part of the booth body and configured to form a plurality of parallel water ropes from water falling from nozzles formed in a bottom wall of the water case; a pump configured to draw up water from the water tank and feed the water into the water case; a barrier member comprising a vertically extending wall portion disposed behind the water ropes; an exhaust chamber formed behind the barrier member and divided from the coating chamber by the barrier member; an exhaust mechanism configured to discharge air from the exhaust chamber; an inclined plate disposed below the nozzles and comprising a water receiving surface sloping forwardly down at an angle from a vertically intermediate portion of the barrier member toward a water surface of the water tank; a windshield plate comprising an upper end and a lower end and defining an air circulation section in conjunction with a rear surface of the inclined plate, the lower end contacting water in the water tank; and a sludge removal mechanism comprising a conveyor configured to discharge paint sludge in the water tank to the outside of the water tank. ### Claim 2 (depends on 1) The paint booth with a purifier according to claim 1, further comprising a porous ventilation section with a large number of holes disposed at a lower part of the inclined plate. ### Claim 3 (depends on 2) The paint booth with a purifier according to claim 2, wherein the porous ventilation section is made of a punching metal disposed at the lower part of the inclined plate. ### Claim 4 (depends on 2) The paint booth with a purifier according to claim 2, further comprising an intake guide member, which extends upwardly from a sidewall of the water tank in front of the porous ventilation section, and an airflow inlet disposed between the intake guide member and the porous ventilation section and communicating with the coating chamber. ### Claim 5 (depends on 3) The paint booth with a purifier according to claim 3, further comprising an intake guide member, which extends upwardly from a sidewall of the water tank in front of the porous ventilation section, and an airflow inlet disposed between the intake guide member and the porous ventilation section and communicating with the coating chamber. ### Claim 6 (depends on 1) The paint booth with a purifier according to claim 1, further comprising an airflow guide plate disposed between the bottom wall of the water case and an eave portion of the booth body formed above the booth opening and configured to close a gap between the eave portion and the water case. ### Claim 7 (depends on 1) The paint booth with a purifier according to claim 1, wherein the conveyor comprises an upper-side portion movable along the water surface of the water tank and a lower-side portion movable along a bottom portion of the water tank, chains at the upper-side portion and chains at the lower-side portion being individually disposed below the water surface in the water tank. ### Claim 8 (depends on 1) The paint booth with a purifier according to claim 1, further comprising a porous ventilation section with a plurality of vertically extending slits disposed at a lower part of the inclined plate. ### Claim 9 (depends on 8) The paint booth with a purifier according to claim 8, further comprising a reinforcing plate extending along the slits on a rear surface of the inclined plate. ### Claim 10 (depends on 9) The paint booth with a purifier according to claim 9, further comprising a handle disposed on an upper part of the inclined plate. ### Claim 11 (depends on 8) The paint booth with a purifier according to claim 8, further comprising a first porous ventilation section with a plurality of vertically extending first slits disposed at a lower part of the inclined plate and a second porous ventilation section with a plurality of vertically extending second slits disposed at an upper part of the inclined plate, the length of the second slits being shorter than the length of the first slits.