EP1332802A2 - Cabine de pulvérisation de peinture - Google Patents

Cabine de pulvérisation de peinture Download PDF

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Publication number
EP1332802A2
EP1332802A2 EP03075334A EP03075334A EP1332802A2 EP 1332802 A2 EP1332802 A2 EP 1332802A2 EP 03075334 A EP03075334 A EP 03075334A EP 03075334 A EP03075334 A EP 03075334A EP 1332802 A2 EP1332802 A2 EP 1332802A2
Authority
EP
European Patent Office
Prior art keywords
fumes
conveying
section
liquid
booth
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.)
Withdrawn
Application number
EP03075334A
Other languages
German (de)
English (en)
Inventor
Andrea Crivellaro
Andrea Magnani
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.)
Spray Ver Impianti Srl
Original Assignee
Spray Ver Impianti Srl
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 Spray Ver Impianti Srl filed Critical Spray Ver Impianti Srl
Publication of EP1332802A2 publication Critical patent/EP1332802A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
    • B05B14/465—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material using substantially vertical liquid curtains or wetted walls behind the object to be sprayed
    • 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
    • B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material

Definitions

  • the booth in question is particularly suitable for limiting the dispersion, in the external environment, of the particles of paint contained in the fumes produced by the painting operations.
  • the chamber has a front wall which faces the guns and which is preferably covered by a layer of water (or other solvent solution) which, flowing from the top downwards, conveys with it most of the particles of paint which are propelled into the air by the guns and which do not reach the object to be painted.
  • a layer of water or other solvent solution
  • the booths are also provided with suction means for conveying outside the chamber all the fumes produced by the painting operation.
  • the sucked-in air is forced to pass through several washing chambers with jets of water and/or cascades of water in which it is further purified of the particles of paint which are still suspended. All the washing water is then made to flow into a single collection tank arranged at the bottom of the booth, from where the waste paint is then removed.
  • the washing plant usually forms a closed cycle in which it is therefore required to restore only the evaporated water.
  • the air expelled from the booth and introduced into the atmosphere must not pollute the environment and therefore must contain a quantity of paint particles able to satisfy all the existing regulations governing purification.
  • some regulations may stipulate that the abovementioned quantity of particles introduced into the atmosphere must be less than 0.3 mg/m 3 .
  • hitherto spray painting booths provided with internal purification systems of the washing water type have been developed more extensively.
  • hitherto spray painting booths provided with internal purification systems of the washing water type have been developed more extensively.
  • numerous different constructional forms of booths able to purify the painting fumes using washing water have been developed.
  • these booths of the known type force the air with the paint particles to pass through series of drawers containing a plurality of spheres which are wetted by a stream of water and which, vibrating very rapidly upon coming into contact with the air, break up the flow thereof and therefore produce turbulence which is able to release the suspended particles into the water.
  • This opening has, arranged above it, a first water distribution element with several nozzles which performs initial washing of the air.
  • the same water emitted by this distribution element feeds the layer of water on the first wall by means of a first cascade which crosses the opening, purifying the air which is forced to pass through it.
  • the air then continues inside the duct delimited by the rear surface of the same front wall and by a second substantially vertical wall on which a second layer of water produced by the same first distribution element is provided.
  • the second wall terminates at the bottom above the collection tank with a second opening where a second cascade is produced, said cascade again being passed through by the air.
  • the air reaches a section of the duct delimited by the second wall and by the rear wall of the booth, where it encounters the water jets which are generated by a second distribution element and capture the remaining particles of paint still suspended in the air flow.
  • the main object of the present invention is that of eliminating the drawbacks of the booths of the known type mentioned above, by providing a spray painting booth which is able to achieve, by means of suitable washing means, a drastic reduction in the quantity of paint particles present in the painting fumes before they are expelled into the external environment.
  • Another object of the present invention is that of providing a spray painting booth which allows the harmful emissions introduced into the environment to be controlled in such a way as to satisfy the existing regulations in this area.
  • a further object of the present invention is that of providing a spray painting booth which allows the expulsion of fumes containing a low concentration of water vapour or residual moisture.
  • 1 denotes in its entirety the spray painting booth according to the present invention.
  • the booth 1 has a support structure 2 resting on the ground with side walls 3, bottom wall 4 and awning 5.
  • the support structure 2 delimits, in a usually central position, a painting chamber 6 which is able to receive the products (not shown in the figures) to be treated with paint spraying operations, or similar products, from an adjacent work station.
  • these means comprise a plant 8 for distributing a flushing liquid generally consisting simply of water, a tank 9 for collecting this liquid, arranged in the bottom 10 of the support structure 2 and an air conveying duct 11 formed by various sections, as will be better explained below.
  • the duct 11 extends essentially from a first opening 12, able to allow communication with the chamber 6, to a second opening 13, able to allow expulsion of the fumes from the booth 1.
  • the duct 11 is provided with at least one wall over which a layer of liquid passes and that it is intercepted by several cascades of liquid in order to wash the air of the particles of paint.
  • the invention envisages that the duct 11 is provided with a front wall 15 delimiting the painting chamber 6 at the rear and covered on the side directed towards the said chamber 6 by a first layer 16 of liquid.
  • the latter is obtained by means of overspill from a small tank 17 fed by the distribution plant 8 and arranged opposite a first top edge 18 of the front wall 15.
  • the product to be treated is arranged in between the spraying station and the front wall 15 and therefore most of the sprayed paint which does not reach the product directly continues its path, falling onto the first layer of liquid 16 which flows over the said front wall 15.
  • the conveying duct 8 is composed of a first section 21 for conveying the fumes upwards, which is connected in succession to a second section 22 for conveying the fumes downwards, which is connected in turn and in succession to a third section 23 for conveying the fumes upwards. All of the abovementioned sections are arranged preferably in the vertical direction.
  • An intermediate wall 24 with a second top edge 25 and second bottom edge 26, and a rear wall 27 with a third top edge 28 and third bottom edge 29, also define the abovementioned sections.
  • the liquid distribution plant 8 is connected to a plurality of nozzles 30 which are distributed in an equidistant manner along a pipe 31 arranged opposite the top edge 25 of the intermediate wall 24.
  • the jets of the nozzles 30 intersect each other so as to create a barrier capable of intercepting in an uninterrupted manner the fumes passing into the duct 11 so as to purify them of the suspended particles of paint.
  • an additional pipe 131 provided with nozzles 130 for further purifying the fumes may also be arranged inside the first section 21 of the conveying duct 8 (see illustration in broken lines in Figure 3).
  • the first section 21 and the second section 22 of the duct 11 are connected together by means of a profiled part 32 having a substantially U-shaped form which is symmetrical with respect to the plane defined by the location of the intermediate wall 24 and is centred around the abovementioned pipe 31 and has its concavity directed downwards.
  • the abovementioned profiled part 32 is intended to contain the fluid jets emitted by the nozzles 30.
  • the sprayed fluid which strikes the abovementioned shaped section 32 is divided into two streams which then flow down the two inner sides 33 until they reach the first and the second section of the duct 11, producing across the ends 34 of the latter a second cascade 35 and a third cascade 36, respectively.
  • These cascades therefore intercept the flow of the fumes in another two sections of the duct 11, resulting in a further reduction in the quantity of particles suspended in the air.
  • the two streams of fluid produced by the jets of the nozzles 30 which are channelled into the two abovementioned sections of the duct 11 form respectively a second layer of liquid 37 on the intermediate wall 24 inside the second section 22, a third layer of liquid 38 on the intermediate wall 24 inside the second section 22, and a fourth layer of liquid 39 on the rear wall 27 again inside the second section 22.
  • This latter layer of liquid 39 once it reaches the communication port 50, produces a fourth cascade 40 for final washing of the fumes.
  • the front wall 15 is provided with a movable bottom section 41 which can be operated, by means of a special actuator 43, so as to be displaced between a raised position 44, where it is possible to perform inspection and maintenance operations, and a lowered position 45, where the booth 1 is in the operative condition.
  • the invention thus conceived therefore achieves the predefined objects.

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
EP03075334A 2002-02-04 2003-02-04 Cabine de pulvérisation de peinture Withdrawn EP1332802A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2002PD000021A ITPD20020021A1 (it) 2002-02-04 2002-02-04 Cabina di verniciatura
ITPD20020021 2002-02-04

Publications (1)

Publication Number Publication Date
EP1332802A2 true EP1332802A2 (fr) 2003-08-06

Family

ID=11452506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03075334A Withdrawn EP1332802A2 (fr) 2002-02-04 2003-02-04 Cabine de pulvérisation de peinture

Country Status (2)

Country Link
EP (1) EP1332802A2 (fr)
IT (1) ITPD20020021A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009127214A1 (fr) * 2008-04-16 2009-10-22 Mph Group Aps Procédé et appareil destinés à imprégner des articles
CN107042184A (zh) * 2017-06-05 2017-08-15 盐城东方天成机械有限公司 一种多重水帘式喷漆房
CN114589040A (zh) * 2022-01-20 2022-06-07 湖北铭宇水晶饰品有限公司 水钻的喷漆室及喷漆方法
CN114618727A (zh) * 2022-04-12 2022-06-14 中国建筑第五工程局有限公司 一种节能建筑加工用具有防止油漆分子扩散的喷漆装置
CN120054803A (zh) * 2025-03-22 2025-05-30 沭阳县金森源木业有限公司 一种建筑模板表面喷涂装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385077A (en) 1940-03-06 1945-09-18 Binks Mfg Co Spray booth
US4096066A (en) 1969-07-05 1978-06-20 Kearney T J Treating contaminated liquids

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385077A (en) 1940-03-06 1945-09-18 Binks Mfg Co Spray booth
US4096066A (en) 1969-07-05 1978-06-20 Kearney T J Treating contaminated liquids

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009127214A1 (fr) * 2008-04-16 2009-10-22 Mph Group Aps Procédé et appareil destinés à imprégner des articles
US9498790B2 (en) 2008-04-16 2016-11-22 Imbox Shoecare A/S Apparatus for impregnation of items with an impregnating agent
CN107042184A (zh) * 2017-06-05 2017-08-15 盐城东方天成机械有限公司 一种多重水帘式喷漆房
CN114589040A (zh) * 2022-01-20 2022-06-07 湖北铭宇水晶饰品有限公司 水钻的喷漆室及喷漆方法
CN114589040B (zh) * 2022-01-20 2024-04-05 湖北铭宇水晶饰品有限公司 水钻的喷漆室及喷漆方法
CN114618727A (zh) * 2022-04-12 2022-06-14 中国建筑第五工程局有限公司 一种节能建筑加工用具有防止油漆分子扩散的喷漆装置
CN114618727B (zh) * 2022-04-12 2022-11-01 中国建筑第五工程局有限公司 一种节能建筑加工用具有防止油漆分子扩散的喷漆装置
CN120054803A (zh) * 2025-03-22 2025-05-30 沭阳县金森源木业有限公司 一种建筑模板表面喷涂装置

Also Published As

Publication number Publication date
ITPD20020021A1 (it) 2003-08-04

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