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EP2958685B1 - Systeme pour traiter des pieces - Google Patents

Systeme pour traiter des pieces Download PDF

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Publication number
EP2958685B1
EP2958685B1 EP14706820.9A EP14706820A EP2958685B1 EP 2958685 B1 EP2958685 B1 EP 2958685B1 EP 14706820 A EP14706820 A EP 14706820A EP 2958685 B1 EP2958685 B1 EP 2958685B1
Authority
EP
European Patent Office
Prior art keywords
process fluid
container
delivery line
line
opening
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.)
Not-in-force
Application number
EP14706820.9A
Other languages
German (de)
English (en)
Other versions
EP2958685A1 (fr
Inventor
Egon KÄSKE
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.)
Ecoclean GmbH
Original Assignee
Duerr Ecoclean GmbH
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 Ecoclean GmbH filed Critical Duerr Ecoclean GmbH
Publication of EP2958685A1 publication Critical patent/EP2958685A1/fr
Application granted granted Critical
Publication of EP2958685B1 publication Critical patent/EP2958685B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/14—Removing waste, e.g. labels, from cleaning liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid

Definitions

  • the invention relates to a plant for treating workpieces with process liquid in a flood chamber, which has a container for the provision of process liquid, and with a process liquid feed line, which connects the container for supplying process liquid with the flood chamber.
  • a plant of the type mentioned is from the DE 10 2006 039 715 A1 known, so that a system according to the preamble of claim 1 and a method according to the preamble of claim 13 are disclosed.
  • From the DE 196 09 783 A1 is a plant and a method for cleaning workpieces known in which the workpieces are treated in a vacuum cleaning chamber by means of liquid and steam.
  • the cleaning chamber is supplied with a cleaning liquid from a container by means of pumps.
  • a system with a flood chamber in which a workpiece to be cleaned can be arranged, and which contains a flooding device which makes it possible to flood the flood chamber with a process liquid designed as a liquid cleaning agent.
  • the flooding device comprises a fan with which a negative pressure can be generated in the flooding device. With the generated negative pressure, the cleaning agent is sucked from serving as a detergent reservoir tank in the flood chamber.
  • the object of the invention is to provide a plant for the treatment of workpieces, which makes it possible to operate a flood chamber for the cleaning of workpieces with short cycle times and to provide a method for the treatment of workpieces in a flood chamber, in a short time very many workpieces can be treated.
  • a process liquid delivery line which connects the container for the supply of process liquid with the flood chamber.
  • One idea of the invention is, in particular, to provide for this process fluid delivery line in the system on the container side an inlet region in which a process liquid fluid jet passing through the process liquid delivery line in the axial direction can be produced. This makes it possible to induce a Venturi effect in the inlet area, which promotes the inflow of process fluid into the flood chamber.
  • the inlet region of the process liquid delivery line advantageously has an inlet opening, which preferably faces a bottom of the container and through which the process liquid can pass from the container via a preferably funnel-shaped tapered section of the inlet region into the process liquid delivery line.
  • the suction effect created by the venturi effect in the inlet region for the process liquid in the container can be enhanced.
  • one finding of the invention is that it is possible to maximize the amount of process liquid that can be moved out of the vessel per unit time through the process fluid delivery line into the flood chamber by creating the process liquid fluid jet in the inlet region by means of a nozzle that is in one arranged in the container pipe branch of a line for process fluid is arranged.
  • this nozzle is positioned in the funnel-shaped tapered portion of the inlet region of the process fluid delivery line.
  • the section of the line branch receiving the nozzle can protrude into its inlet area, in particular through the inlet opening of the process fluid delivery line.
  • another embodiment of the system according to the invention can also have a nozzle for generating a process fluid jet, which is located outside the process fluid delivery line immediately before its inlet opening.
  • the system preferably contains a device for generating a negative pressure in the flood chamber in order to fill the flood chamber with process liquid from the container via the process liquid delivery line.
  • the flood chamber has an opening for the entry of process liquid and an opening for the exit of process liquid.
  • the opening of the flood chamber for the entry of process fluid and the opening for the escape of process fluid can be identical in particular.
  • the system may also include a container for receiving contaminated process fluid to which the process fluid from the flood chamber is directed through the process fluid exit port.
  • the container for providing process liquid in this case has an overflow through which process liquid can enter the container for receiving process liquid.
  • the container for receiving soiled process fluid and the container for providing process fluid may also be identical.
  • the means for generating a process liquid fluid jet passing through the container-side inlet region of the process liquid feed line in the axial direction comprises a pump which extracts process liquid from the container for receiving contaminated process fluid through a cleaning device for the removal of dirt particles and a conduit with an outlet opening for generating the process liquid fluid jet moves.
  • bypass line communicating with the cleaning device for supplying process fluid cleaned in the cleaning device into the container for providing process fluid
  • continuous cleaning of process fluid in the system is made possible.
  • a bypass line communicating with the cleaning device for supplying process fluid purified in the cleaning device into the flood chamber may also be provided for this purpose.
  • the workpiece is arranged in the flood chamber in a first step.
  • a negative pressure is then generated in the flood chamber.
  • the process liquid is sucked from a container for the provision of process fluid through a process fluid supply line with a container-side inlet region, wherein in the container-side inlet region, an additional process liquid fluid jet is generated, which moves a process liquid in the process liquid delivery line hydrostatic pressure gradient generated.
  • One idea of the invention in this context is, in particular, that the additional process liquid fluid jet is generated with polluted process liquid conducted by a cleaning device.
  • the plant 10 in Fig. 1 has a flood chamber 12, in which one or more workpieces 14 can be arranged to treat them with a process liquid, in particular to clean.
  • the plant 10 has a process liquid supply line 16 with a controllable flood flap 17, which opens into the flood chamber 12 and which projects into a container 18 which is filled with the process liquid.
  • the process fluid delivery line 16 has an inlet region 20 with a funnel-shaped widened inlet opening 22, which is immersed in the process liquid 24 in the container 18.
  • the flood chamber 12 has an opening 26 for the supply of process liquid from the container 18.
  • the flood chamber 12 can be flooded with process liquid from the container 18 through the opening 26.
  • the flood chamber 12 also has an opening 28 with a controllable flood flap 29, through which the process liquid can be introduced into a container 30.
  • process liquid can also be supplied from the container 18 through an overflow 32 into the container 30.
  • the container 30 is used for receiving soiled process liquid 25 and has a sump portion 34 in which dirt particles z. B. in the form of solids or chips from the process liquid can settle.
  • a scraper conveyor conveyor system for discharging the dirt particles from the sump portion 34, there is in the system 10 a preferably designed as a scraper conveyor conveyor system (not shown).
  • the process liquid with a feed pump 36 through a delivery line 38 which contains a cleaning device 40 with a self-cleaning filter system, are returned to the container 18.
  • the delivery line 38 comprises a line branch 42 with a nozzle 44.
  • the line branch 42 protrudes into the container 18 and serves for generating a container-side inlet region 20 coaxially penetrating process liquid fluid jet 46, which exits from the nozzle 44.
  • the outlet opening of the nozzle 44 is arranged in a tapering section of the inlet region 20 of the process fluid delivery line 16.
  • the section of the line branch 42 receiving the nozzle 44 protrudes through the inlet opening 22 into the process fluid delivery line 16.
  • the delivery line 38 has a line branch 48 and a line branch 50, which are connected in parallel to the line branch 42.
  • the line branch 48 contains a throttle valve 52 and a shut-off valve 54. It acts as a bypass line through which the process fluid in the system 10 can be circulated by means of the feed pump 36 without the process fluid being guided through the flood chamber 12 for this purpose.
  • the line branch 50 is used for the application of arranged in the flood chamber 12 cleaning nozzles 55 with the process liquid.
  • the device 56 to generate a negative pressure in the flood chamber 12.
  • the device 56 has a fan 58, with a suction line 60, in which a controllable valve 62 is arranged, is connected to the flood chamber 12.
  • the extracted by means of the blower 58 from the flood chamber 12 gaseous fluid is released via a steam condenser 66 to the environment, which is cooled by a further fan 64.
  • Via a pressure line 68 and a shut-off valve 70 the fluid chamber 12 can be relieved of an overpressure or a negative pressure.
  • the workpiece 14 in the flood chamber 12 In order to treat a workpiece 14 with process fluid in the system 10, z. B. arranged in a first step, the workpiece 14 in the flood chamber 12. In a second step following the first step, the flood chamber 12 is then flooded with process fluid, which is supplied to the flood chamber 12 from the container 18 and the delivery line 38. In this case, by means of the blower 58 in the device 56 to the fluid chamber 12, a negative pressure is applied, wherein the flood flap 17 of the process liquid supply line 16 is opened. The process liquid is sucked in this measure from the container 18 then through the process liquid supply line 16 into the flood chamber 12.
  • the flood flap 17 in the process liquid delivery line 16 is closed and the flood flap 29 of the flood chamber 12 is opened.
  • compressed air is simultaneously injected via the pressure line 69 in order to press the process fluid 24 through the opening 28 into the container 30.
  • the flood chamber 12 can then be removed from a correspondingly treated workpiece 14.
  • the system 10 For establishing a pressure equalization between the flood chamber 12 and the container 30, the system 10 includes a pressure equalization line 74 with a shut-off valve 76 which connects the container 30 with the flood chamber 12.
  • a heating device 78 in the system 10.
  • the pump 36 in the system 10 preferably has a pumping capacity of 30 kW, thereby enabling the pump side to provide a pump pressure P with P ⁇ 9bar at a delivery volume of 90m 3 / h. Due to the line branch acting as a bypass line 48, the feed pump 36 can be operated with a constant pump power when the shut-off valve 54 is open.
  • the system 10 also includes a controller (not shown) for controlling the delivery pump 36 and the valves and flaps provided therein and for monitoring the process fluid levels in the system with an overfill protection level sensor disposed in the container 30 80, a working level level sensor 82, a dry level sensor 84, and a level sensor 86 disposed in the container 18 for monitoring the process liquid operating level in the container 18.
  • a controller not shown
  • the system 10 may be formed in a modified embodiment without the line branches 48 and 50. In this Case, it is advantageous if in the line branch 42, an additional throttle valve and a shut-off valve is integrated.
  • the in the Fig. 2 shown plant 100 has different than the system 10 in Fig. 1 only a container 118 for receiving process fluid, which is the flood chamber 112 is supplied.
  • Assemblies of Appendix 100 which correspond to the assemblies described above Appendix 10, are in the Fig. 2 with respect to the Fig. 1 indicated by the number 100 increased numbers as reference numerals.
  • the flood chamber 112 has an opening 128. Through this opening 128 of the flood chamber 112 can be supplied through a line 116 process fluid from the container 118. Conversely, it is possible to remove the process liquid after treating a workpiece 114 in the flood chamber 112 through the conduit 116 into the container 118. In line 116, there is a controllable floodgate 129 which allows shutoff and release of the flood chamber 112 to the container 118.
  • the line 116 is operated in the system 100, on the one hand, as a process fluid delivery line and, on the other hand, as a line through which process liquid contaminated with the container 118 is supplied from the flood chamber 112 after the treatment of a workpiece 114.
  • the line 116 also has an inlet region 120 with a funnel-shaped widened inlet opening 122, which is immersed in the process liquid 124 in the container 118.
  • the container 118 has a sump portion 134, in which dirt particles can settle out of the process liquid. From the sump portion 134 of the container 118, the process liquid can be reversely returned to the container 118 with a feed pump 136 through a feed line 138 containing a purifier 140 with a self-cleaning filter system.
  • the delivery line 138 has a line branch 142 which projects into the container 188 and has a nozzle 144.
  • the line branch 142 serves for the production of a process-liquid fluid jet 146 that passes coaxially through the container-side inlet region 120 and exits from the nozzle 144.
  • the outlet opening of the nozzle 144 is arranged in a tapering section of the inlet region 120 of the process fluid delivery line 116.
  • the portion of the line branch 142 receiving the nozzle 144 projects through the inlet opening 122 into the process fluid delivery line 116.
  • the delivery line 138 further includes a line branch 148 communicating with the flood chamber 112, which is connected in parallel with the line branch 142.
  • the line branch 148 contains a shut-off valve 154. It can act as a bypass line, by means of which the process fluid can be recirculated via the flood chamber 112 in the system 100 by means of the feed pump 136.
  • a workpiece 114 In order to treat a workpiece 114 with process fluid in the system 100, z. B. arranged in a first step, the workpiece 114 in the flood chamber 112.
  • the flood chamber 112 In a second step following the first step, when the flood flap 117 is open, the flood chamber 112 is then flooded with the process fluid which is supplied from the container 118 through the delivery line 116 into the flood chamber 112.
  • a negative pressure is applied to the fluid chamber 112 by means of the blower 158 in the device 156.
  • the process liquid from the container 118 is then sucked back into the flood chamber 112 of this measure.
  • process fluid containing the process fluid fluid jet 146 is supplied into the process fluid delivery line 116 through the delivery line 138 and the line branch 142 with the nozzle 144, which passes through the container-side inlet region 120 in the axial direction, likewise a corresponding venturi effect caused, the suction of process fluid from the container 118 in the process fluid delivery line 116 supported.
  • the invention relates to a system 10 for treating workpieces 14 with process fluid in a flood chamber 12.
  • the system has a container 18 for the provision of process fluid.
  • a process liquid supply line 16 which connects the container 18 for supplying process liquid with the flood chamber 12.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Claims (14)

  1. Unité (10, 100) pour le traitement de pièces ouvrées (14, 114) avec un liquide de procédé (24, 124) dans une chambre d'immersion (12, 112),
    comprenant un contenant (18, 118) pour la mise à disposition d'un liquide de procédé (24, 124), et
    comprenant une conduite de transport de liquide de procédé (16, 116), qui raccorde le contenant (18, 118) pour l'introduction de liquide de procédé (24, 124) avec la chambre d'immersion (12, 112),
    la conduite de transport de liquide de procédé (16, 116) comprenant une zone d'alimentation du côté du contenant (20, 120), caractérisée en ce que des moyens (44, 144) pour la génération d'un jet de fluide de liquide de procédé traversant la zone d'alimentation du côté du contenant (20, 120) de la conduite de transport de liquide de procédé (16, 116) pour la production d'un gradient de pression hydrostatique qui déplace le liquide de procédé (24, 124) dans la conduite de transport de liquide de procédé (16, 116) sont prévus.
  2. Unité selon la revendication 1, caractérisée en ce que la zone d'alimentation du côté du contenant (20, 120) de la conduite de transport de liquide de procédé (16, 116) a une ouverture d'entrée élargie en forme d'entonnoir (22, 122).
  3. Unité selon la revendication 1 ou 2, caractérisée par un dispositif (56) pour la génération d'une sous-pression dans la chambre d'immersion (12, 112) afin de remplir la chambre d'immersion (12, 112) par le biais de la conduite de transport de liquide de procédé (16, 116) avec le liquide de procédé (24, 124) issu du contenant (18, 118).
  4. Unité selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la chambre d'immersion (12, 112) comprend une ouverture (26, 126) pour l'entrée du liquide de procédé (24, 124) et une ouverture (28, 128) pour la sortie du liquide de procédé (24, 124).
  5. Unité selon la revendication 4, caractérisée par un dispositif pour la génération d'une surpression dans la chambre d'immersion (12, 112) afin de faire sortir le liquide de procédé (24, 124) se trouvant dans la chambre d'immersion (12, 112) par l'ouverture (28, 128) pour la sortie du liquide de procédé (24, 124) de la chambre d'immersion (12, 112).
  6. Unité selon l'une quelconque des revendications 4 ou 5, caractérisée par un contenant (30, 118) pour la réception d'un liquide de procédé pollué, dans lequel un liquide de procédé (24, 124) peut être introduit à partir de la chambre d'immersion (12, 112) par l'ouverture (28, 128) pour la sortie du liquide de procédé (24, 124).
  7. Unité selon la revendication 6, caractérisée en ce que le contenant (18) pour la mise à disposition du liquide de procédé comprend un trop-plein (32) pour l'introduction de liquide de procédé dans le contenant (30) pour la réception de liquide de procédé.
  8. Unité selon la revendication 6, caractérisée en ce que le contenant (118) pour la réception de liquide de procédé pollué (124) et le contenant (118) pour la mise à disposition de liquide de procédé (24, 124) sont identiques.
  9. Unité selon la revendication 4, caractérisée en ce que l'ouverture (128) pour l'entrée de liquide de procédé (124) et l'ouverture (128) pour la sortie de liquide de procédé (124) sont identiques.
  10. Unité selon la revendication 7 ou 8, caractérisée en ce que le moyen pour la génération d'un jet de fluide de liquide de procédé (46, 146) traversant la zone d'alimentation du côté du contenant (20, 120) de la conduite de transport de liquide de procédé (16, 116) comprend une pompe (36, 136), qui déplace le liquide de procédé (24, 124) issu du contenant (30, 118) pour la réception de liquide de procédé pollué (24, 124) au travers d'un dispositif de purification (40, 140) pour la séparation de particules polluantes du liquide de procédé (24, 124) et d'une branche de conduite (142) comprenant une ouverture de sortie pour la génération du jet de fluide de liquide de procédé (46, 146).
  11. Unité selon la revendication 10, caractérisée par une conduite de dérivation communiquant avec le dispositif de purification (40) pour l'introduction du liquide de procédé (24) purifié dans le dispositif de purification (40) dans le contenant (18) pour la mise à disposition de liquide de procédé (24).
  12. Unité selon la revendication 10 ou 11, caractérisée par une conduite de dérivation communiquant avec le dispositif de purification (40, 140) pour l'introduction du liquide de procédé (24, 124) purifié dans le dispositif de purification (40, 140) dans la chambre d'immersion (12, 112).
  13. Procédé pour le traitement de pièces ouvrées (14, 114) avec un liquide de procédé (24, 124) dans une chambre d'immersion (12, 112), selon lequel, lors d'une première étape, la pièce ouvrée est agencée dans la chambre d'immersion (12, 112), selon lequel, lors d'une deuxième étape, une sous-pression est générée dans la chambre d'immersion (12, 112), et selon lequel, lors d'une troisième étape, un liquide de procédé (24, 124) est aspiré à partir d'un contenant (18, 118) pour la mise à disposition du liquide de procédé (24, 124) par une conduite de transport de liquide de procédé (16, 116) comprenant une zone d'alimentation du côté du contenant (20, 120), caractérisé en ce qu'un jet de fluide de liquide de procédé (46, 146) est généré dans la zone d'alimentation du côté du contenant (20, 120), qui produit un gradient de pression hydrostatique déplaçant le liquide de procédé (24, 124) dans la conduite de transport de liquide de procédé (16, 116).
  14. Procédé selon la revendication 13, caractérisée en ce que le jet de fluide de liquide de procédé supplémentaire (46, 146) est généré avec le liquide de procédé pollué (24, 124) conduit au travers d'un dispositif de purification (40, 140).
EP14706820.9A 2013-02-25 2014-02-25 Systeme pour traiter des pieces Not-in-force EP2958685B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013203059.2A DE102013203059A1 (de) 2013-02-25 2013-02-25 Anlage für das Behandeln von Werkstücken
PCT/EP2014/053632 WO2014128307A1 (fr) 2013-02-25 2014-02-25 Installation pour le traitement de pièces ouvrées

Publications (2)

Publication Number Publication Date
EP2958685A1 EP2958685A1 (fr) 2015-12-30
EP2958685B1 true EP2958685B1 (fr) 2017-10-04

Family

ID=50184902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14706820.9A Not-in-force EP2958685B1 (fr) 2013-02-25 2014-02-25 Systeme pour traiter des pieces

Country Status (5)

Country Link
US (1) US10081037B2 (fr)
EP (1) EP2958685B1 (fr)
CN (1) CN105073286B (fr)
DE (1) DE102013203059A1 (fr)
WO (1) WO2014128307A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013203059A1 (de) 2013-02-25 2014-08-28 Dürr Ecoclean GmbH Anlage für das Behandeln von Werkstücken
DE102020208247A1 (de) 2020-07-01 2022-01-05 Dürr Systems Ag Behandlungsstation, Behandlungsanlage und Verfahren zum Behandeln von Werkstücken
DE102020208248A1 (de) * 2020-07-01 2022-01-05 Dürr Systems Ag Behandlungsstation, Behandlungsanlage und Verfahren zum Behandeln von Werkstücken
DE102021214987A1 (de) 2021-12-23 2023-06-29 Dürr Systems Ag Behandlungsanlage und Verfahren zum Behandeln von Werkstücken

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CH670771A5 (fr) 1986-10-02 1989-07-14 Rolf Braegger
DE3731410A1 (de) * 1987-09-18 1989-04-06 Duerr Gmbh & Co Verfahren und anlage zum flutwaschen
DE4446587A1 (de) * 1994-12-24 1996-06-27 Ipsen Ind Int Gmbh Verfahren zur Reinigung metallischer Werkstücke
DE19609783B4 (de) * 1996-03-13 2005-08-25 Meissner, Werner Verfahren zum Reinigen von Gegenständen sowie Anlage zur Durchführung des Verfahrens
US7032435B2 (en) * 2001-10-09 2006-04-25 Brian Edward Hassenflug Liquid leak detector and automatic shutoff system
CA2458432C (fr) * 2004-02-18 2009-11-03 Allegiance Corporation Methode et dispositif d'elimination des residus de fluides corporels
DE102006039715A1 (de) * 2006-08-24 2008-02-28 Dürr Ecoclean GmbH Reinigungsvorrichtung mit einer Flutkammer
US8425977B2 (en) * 2008-09-29 2013-04-23 Applied Materials, Inc. Substrate processing chamber with off-center gas delivery funnel
DE102013203059A1 (de) 2013-02-25 2014-08-28 Dürr Ecoclean GmbH Anlage für das Behandeln von Werkstücken

Non-Patent Citations (1)

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Also Published As

Publication number Publication date
DE102013203059A1 (de) 2014-08-28
CN105073286A (zh) 2015-11-18
US20150360262A1 (en) 2015-12-17
EP2958685A1 (fr) 2015-12-30
US10081037B2 (en) 2018-09-25
CN105073286B (zh) 2017-03-08
WO2014128307A1 (fr) 2014-08-28

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