EP1863592A1 - Transportsystem für pulverlackrückgewinnung - Google Patents

Transportsystem für pulverlackrückgewinnung

Info

Publication number
EP1863592A1
EP1863592A1 EP06739978A EP06739978A EP1863592A1 EP 1863592 A1 EP1863592 A1 EP 1863592A1 EP 06739978 A EP06739978 A EP 06739978A EP 06739978 A EP06739978 A EP 06739978A EP 1863592 A1 EP1863592 A1 EP 1863592A1
Authority
EP
European Patent Office
Prior art keywords
powder paint
transporter
collector
reclaim
set forth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06739978A
Other languages
English (en)
French (fr)
Other versions
EP1863592B1 (de
EP1863592A4 (de
Inventor
Joseph M. Klobucar
David J. Cole
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Duerr Systems AG filed Critical Duerr Systems AG
Publication of EP1863592A1 publication Critical patent/EP1863592A1/de
Publication of EP1863592A4 publication Critical patent/EP1863592A4/de
Application granted granted Critical
Publication of EP1863592B1 publication Critical patent/EP1863592B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/48—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for particulate material

Definitions

  • the present application covers a powder paint reclaim system and method for reclaiming powder paint not adhered to an article being painted in a powder paint booth. More specifically, the present application relates to a powder paint reclamation transport and method for reclaiming powder paint not adhered to an article being painted using positive gas pressure and gravitational forces to transport the powder paint.
  • a powder paint reclamation system includes a plurality of collectors disposed beneath a powder paint booth for collecting powder paint not adhered to the article being painted.
  • Each of the plurality of collectors includes a collector fluidizer for maintaining the powder paint in a fluidized state.
  • a transporter is connected to at least one of the plurality of collectors for transporting powder paint from the collectors to a powder paint reclaim hopper. At least a portion of each transporter is disposed below the collector fluidizer and has a transporter fluidizer for maintaining the powder paint received from the collector in a fluidized state.
  • the transporter is connected to at least one of a plurality of collectors by a transfer line that receives powder paint from a substantially lowermost region of the collector to the transporter disposed below the collector. Because the collector maintains the powder paint in a fluidized state, the powder paint flows with the assistance of gravitational forces from each collector to the transporter through the transfer line.
  • the powder paint reclamation system described above solves the problems associated with known systems through the simplicity of using gravitational forces to transfer powder paint from the powder paint collectors to the transporter. Furthermore, a need for a transfer pump is eliminated by the use of air pressure that increases in the transporter through the introduction of fluidizing air through the transporter fluidizer. Therefore, powder paint is transferred from the transporter to the reclamation hoppers by positive pressure not requiring the use of vacuum pumps that are expensive and difficult to maintain.
  • Figure 1 is a side elevational view of the assembly showing a plurality of powder paint collectors disposed below a powder paint application booth;
  • Figure 2 is a side fragmented view of a lowermost region of a powder paint collector having a exit port for transferring powder paint to a transporter;
  • Figure 3 shows a partial schematic view of one embodiment of the inventive transporter connected to a powder paint collector
  • Figure 4 shows a side-elevational view of a plurality of transporters in a powder paint application system
  • Figure 5 shows an alternative embodiment of a plurality of transporters in a powder paint application system.
  • a powder paint application assembly is generally shown at 10.
  • the assembly has been described in fuller detail in United States Patent Nos. 6,471,737 filed on December 26, 2000 and United States Patent No. 6,723,145 filed January 2, 2002, each assigned to the present applicant, the particulars of which are incorporated hereby by reference.
  • the assembly 10 includes an enclosed application booth (not shown) where articles to be painted, such as, for example, vehicle bodies 12 are conveyed, preferably on a conveyor system, where robotic and stationary applicators (not shown) disburse powder paint.
  • a grating, or other porous floor 14 separates the booth from a continuous air chamber 16, which is disposed below the booth.
  • the continuous air chamber 16 generally extends the length of the booth, and is enclosed upon a bottom end by a plurality of powder paint collectors 18.
  • Each powder paint collector 18 includes a filter assembly 20 which filters recirculation air that is transported to an air plenum through a duct 22 for reintroduction into the application booth.
  • each collector 18 includes a collection chamber 24 and an air chamber 26 separated from the collection chamber 24 by a porous plate 28.
  • a flow of air forces powder paint not adhered to the article 12 downwardly into the collectors 18 and, therefore, into the collection chamber 24.
  • a constant flow of fluidizing air enters into the air chamber 26 through air chamber inlet 30 where air flows upwardly through the porous plate 28 into the air chamber 26 fluidizing the powder paint collecting in the collection chamber 24.
  • the porous plate 28 slopes downwardly toward a powder outlet 32 so that the powder outlet 32 is located in a lowermost portion of the collector 18.
  • the combination of the fluidizing air, the porous plate 28, and the air chamber 26 comprise a fluidizer 34 used to fluidize the powder paint forced into the collectors 18 from the powder paint booth.
  • a fluidizer 34 used to fluidize the powder paint forced into the collectors 18 from the powder paint booth.
  • alternative fluidizer designs may be used to fluidize the powder paint disposed within the collection chamber 24 as long as the powder outlet 32 is located in the lowermost section of the collection chamber 24, the purpose of which will become more evident as the assembly 10 is explained further below.
  • a transfer line 36 is operably connected to the powder outlet
  • a plurality of transporters is shown in Figure 1 connected to the plurality of collectors 18. At least a portion of the transporter 38 is disposed below the level of the lowermost portion of the collector 18. More preferably, an upper end 40 of the transporter is disposed between about three and six inches below the lowermost portion of the collection chamber 24 as identified by H, shown in Figure 3. In any event, the connection point of the transfer line 36 to the transporter 38 is below the lowermost portion of the collection chamber 24, or the powder outlet 32, so that gravitational forces allow the fluidized powder paint to flow from the collection chamber 24 to the transporter 38 as will become more evident when explained further below.
  • the transfer line 36 slopes downwardly from the collector 18 to the transporter 38 at an angle of between generally 50° and 25° to vertical. More preferably, the slope of the transfer line 36 is below about 45° and still more preferably below about 30° as shown in Figure 3 by angle ⁇ . This has been shown to allow fluidized powder paint to flow from the collection chamber 24 to the transporter 38 with a minimal risk of blockage inside the transfer line 36.
  • a transfer line valve 44 seals the link between the transporter 38 and the collector 18.
  • the transfer line valve 44 is contemplated by the inventors to be a pinch valve. However, other equivalent sealing valves as known of those of skill in the art may be used as desired.
  • the transporter 38 includes a transporter fluidizing plate 46 that separates the transporter fluidizing chamber 48 from the transporter air chamber 50 where fluidizing air is injected from a source of fluidizing air to fluidize the powder paint received from the collection chamber 24.
  • a vent line 42 extends from the upper end 40 of the transporter 38 to the collection chamber 24 of the collector 18.
  • a vent valve 57 is located in the vent line 42 to seal the vent line 42 preventing air from being transferred from the transporter 48 to the collection chamber 24.
  • the purpose of the vent line 42 is to vent fluidizing air from the transfer fluidizing chamber 48 to the collector 18 at desired intervals as will be described further below.
  • a reclaim hopper line 52 connects the transporter fluidizing chamber 48 to a reclaim hopper 54 where powder paint not adhered to the vehicle body 12 is transferred from the collector 18 via the transporter 48. Fluidized powder paint is transferred from the transporter 48 to the reclaim hopper 54 by positive pressure established inside the transporter by injecting fluidized air.
  • four sequential steps take place, a fill step, a pressurized step, a pushing step, and a venting step.
  • the transfer line valve 44 is open, the vent valve 57 is open, and the reclaim valve 56 is closed.
  • fluidizing air is injected into the transporter air chamber 50 at a low pressure, preferably at a pressure of 10 psig or below at a flow rate of 20 to 30 cubic feet per hour.
  • the low pressure and flow rate of fluidizing air allows the powder paint to flow downwardly through the transfer line 36 while still providing enough fluidizing air to fluidize the powder paint entering the transporter 38.
  • the pressurizing step is initiated where the transfer line valve 44, the vent valve 57, and the reclaim valve 56 are all closed.
  • the fluidizing air is increased to a flow rate of about 100 to 200 cubic feet per hour to build up the pressure in the transporter to between generally 10 and 20 psig.
  • the venting step takes place where the transfer line valve 44 is closed, the vent valve 57 is opened, and the reclaim valve 56 is also closed.
  • the fluidizing air injected into the transport air chamber 50 is terminated, and excess air from the transporter fluidizing chamber 48 is vented into the collection chamber 24 of the collector 18 substantially equalizing the gas pressure between the transporter 38 and the collector 18 enabling fluidized power to flow downwardly from the collectors 18 to the transporter 38.
  • each collector 18 is connected in the manner set forth above to a transporter 38. It is contemplated by the inventors that each transporter 38 has a separate reclaim hopper line 52 for transferring the fluidized powder from the transporter 38 to the reclaim hopper 54. However, it should be understood by those of skill in the art that a common reclaim hopper line 52 to each transporter 38 may also be used.
  • pairs of collectors 118 are oriented so that the lowermost portion of the collection chamber 124 is positioned in an adjacent manner so that a single transporter 138 services two collectors 118.
  • the transporter 138 receives fluidized powder paint through two transfer lines 136, one each connected to the lowermost portion of the adjacent collection chambers 124.

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP06739978A 2005-03-29 2006-03-29 Transportsystem für pulverlackrückgewinnung Active EP1863592B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66598905P 2005-03-29 2005-03-29
PCT/US2006/011533 WO2006105235A1 (en) 2005-03-29 2006-03-29 Powder paint reclaim transport system

Publications (3)

Publication Number Publication Date
EP1863592A1 true EP1863592A1 (de) 2007-12-12
EP1863592A4 EP1863592A4 (de) 2010-04-28
EP1863592B1 EP1863592B1 (de) 2011-10-19

Family

ID=37053711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06739978A Active EP1863592B1 (de) 2005-03-29 2006-03-29 Transportsystem für pulverlackrückgewinnung

Country Status (3)

Country Link
EP (1) EP1863592B1 (de)
AT (1) ATE529194T1 (de)
WO (1) WO2006105235A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108654898A (zh) * 2018-06-14 2018-10-16 重庆阿罗网络科技有限公司 粉末涂料的收集装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002117A1 (en) * 1980-01-30 1981-08-06 Esb Voehringer Tool powder coating installation including a cabin to temporary receive the tool
DE4134701A1 (de) * 1991-10-21 1993-04-22 Gema Volstatic Ag Pulver-spruehbeschichtungseinrichtung
GB2328387A (en) * 1997-08-22 1999-02-24 Honda Motor Co Ltd Powder coating process and apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5743958A (en) 1993-05-25 1998-04-28 Nordson Corporation Vehicle powder coating system
US5766355A (en) * 1994-09-28 1998-06-16 Abb Flexible Automation Inc. Exhaust arrangements for powder spray booth
US6471737B2 (en) 2000-12-26 2002-10-29 Durr Industries, Inc. Underbooth powder paint collector
US20030051663A1 (en) * 2001-09-19 2003-03-20 Tomlin Edward E. Powder collection system for a powder paint spray booth
US6723145B2 (en) 2002-01-02 2004-04-20 Dürr Industries, Inc. Open powder booth collection design

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002117A1 (en) * 1980-01-30 1981-08-06 Esb Voehringer Tool powder coating installation including a cabin to temporary receive the tool
DE4134701A1 (de) * 1991-10-21 1993-04-22 Gema Volstatic Ag Pulver-spruehbeschichtungseinrichtung
GB2328387A (en) * 1997-08-22 1999-02-24 Honda Motor Co Ltd Powder coating process and apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2006105235A1 *

Also Published As

Publication number Publication date
WO2006105235A1 (en) 2006-10-05
EP1863592B1 (de) 2011-10-19
ATE529194T1 (de) 2011-11-15
EP1863592A4 (de) 2010-04-28

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