EP0918974B1 - Dispositif de projection intermittente d'un agent pour le traitement de surfaces - Google Patents

Dispositif de projection intermittente d'un agent pour le traitement de surfaces Download PDF

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Publication number
EP0918974B1
EP0918974B1 EP97928096A EP97928096A EP0918974B1 EP 0918974 B1 EP0918974 B1 EP 0918974B1 EP 97928096 A EP97928096 A EP 97928096A EP 97928096 A EP97928096 A EP 97928096A EP 0918974 B1 EP0918974 B1 EP 0918974B1
Authority
EP
European Patent Office
Prior art keywords
medium
frame
medium jet
objects
nozzle
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.)
Expired - Lifetime
Application number
EP97928096A
Other languages
German (de)
English (en)
Other versions
EP0918974A1 (fr
Inventor
Urs Zihlmann
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.)
Galvatec GmbH
Original Assignee
Galvatec 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 Galvatec GmbH filed Critical Galvatec GmbH
Publication of EP0918974A1 publication Critical patent/EP0918974A1/fr
Application granted granted Critical
Publication of EP0918974B1 publication Critical patent/EP0918974B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/14—Drying solid materials or objects by processes not involving the application of heat by applying pressure, e.g. wringing; by brushing; by wiping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes

Definitions

  • the invention relates to a device for pulsed output a medium for the treatment of surfaces according to the Preamble of claim 1.
  • Such a device is e.g. known from EP-A-0 486 711.
  • the Device according to patent specification EP 0 486 711 comprises one Containers for the items to be dried.
  • this container is two spaced apart Air jet dispensers arranged. Between Air jet dispensers are the objects to be treated applicable.
  • the device has a drive on which with the air jet dispensers such are connected to the drive in parallel and in operation are moved in opposite directions to each other.
  • Any air jet dispenser comprises a sequence of side by side, pieces of pipe aligned with each other in the axial direction, which are connected to a compressed air source.
  • Each pipe section has a number of compressed air outlet openings on.
  • Another disadvantage of the device according to the Patent EP 0 486 711 is that they have one own, specially made container. she can consequently not without a container or together with an existing one, commercial container or drying oven used become.
  • the object of the present invention is to create a device for the pulsed delivery of a medium for treating surfaces, in which the disadvantages of the known pulse blow dryer are eliminated.
  • Another object is to design the device in such a way that objects can be wetted, rinsed, cleaned and / or treated with steam using various liquids (for example water, cleaning liquid, etc.). The object is achieved with the aid of the features of patent claim 1.
  • Advantageous developments of the invention are the subject of the dependent claims.
  • the proposed pulse blow-off spray cleaning device 1 has a frame 2 which consists of two longitudinal struts 3 and two transverse struts 4 with, for example, an L-shaped cross section.
  • One leg 7, 5 of each cross strut 4 and each longitudinal strut 3 runs horizontally; the other leg 6 runs vertically.
  • the vertical legs 6 form the outer boundary of the frame 2.
  • the pulse blow-off spray cleaning device can be placed on an existing cuboid container 8 with this frame 2. In the attached state, the horizontal legs 7, 5 of the cross struts 4 and longitudinal struts 3 of the frame 2 rest on the upper end faces of the container walls 9.
  • the vertical legs of the cross struts 4 and the vertical legs 6 of the longitudinal struts 3 run parallel to the outer sides of the container walls 9 (cf. FIG. 3). You can rest on the outside of the container walls 9.
  • two medium jet delivery units 12 are suspended from frame 2.
  • a linear slide 19, which rests on the frame 2 and is fastened to the frame 2, is used for fastening (see FIG. 3).
  • a traction device is fixed on the linear slide 19.
  • a wire rope 10 is used as the traction means, which is guided through four or six deflection rollers 11 (cf. FIGS. 1, 2a and 2b).
  • Gears or belt wheels are then used for guidance.
  • one of four deflection rollers 11 is rotatably attached to each frame corner (cf. FIGS. 1 and 2a).
  • a medium jet delivery unit 12 is attached to each run of the wire rope 10 running along the longitudinal frame strut 3.
  • a deflection roller 11 is also attached to each frame corner.
  • a further deflection roller 11 is rotatably fastened to the inside on two deflection rollers 11, which are arranged on the same longitudinal half of the frame 2 (cf. FIG. 2b).
  • the wire rope 10 is first passed over the first outer deflection roller 11 and then over the second outer deflection roller 11.
  • the wire rope 10 extends from the second outer deflection roller 11 back to the first inner deflection roller 11, which is arranged on the inside of the first outer deflection roller 11.
  • the wire rope finally extends from the first inner deflection roller 11 to the second inner deflection roller 11.
  • a total of three runs of the wire rope 10 thus run along the corresponding frame longitudinal strut 3.
  • At least one linear slide 19 is fastened to the middle run.
  • At least one linear slide 19 is also attached to the run on the opposite longitudinal half of the frame 2.
  • the distance between them is slightly less than 50% of the frame length.
  • the drive for the wire rope 10 in the exemplary embodiment further consists of an electric motor 13 which is fastened to a cross strut 4 of the frame 2 near a frame corner.
  • the motor axis runs vertically and carries a drive wheel 14 for a rotating traction device.
  • a drive chain 16 is used as the traction means.
  • other traction means such as a wire rope or a drive belt, can also be used.
  • a deflection roller 15 is rotatably attached to the same cross strut 4 as the electric motor 13, close to the corner facing away from it.
  • the drive chain 16 is guided over the drive wheel 14 and the deflection roller 15.
  • the deflection roller 15 for example a horizontally extending support plate projecting on the outside and bearing a vertical axis can be attached to the cross strut 4.
  • the deflection roller 15 is attached to this axis.
  • the electric motor 13 moves the drive chain 16 at a constant speed and in the same direction of rotation. So that the circumferential movement of the drive chain 16 can be converted into a to-and-fro movement of the wire rope 10, the wire rope 10 carries a driver on the run that runs parallel to the drive chain 16 17.
  • This driver 17 is connected to the drive chain 16 at the same time.
  • the drive chain 16 moves the driver 17 in a circumferential path, which has two straight sections running parallel to the frame cross struts 4 between the drive wheel 14 and the deflection roller 15.
  • the driver 17 moves along the one straight track section, it pulls the wire rope 10 along the frame cross strut 4 in one direction, but if the driver 17 moves along the other straight track section, it pulls the wire rope 10 along the frame cross strut 4 in the opposite direction.
  • the distance between the drive wheel 14 and the deflection roller 15 is now selected such that the maximum path which the wire rope 10 travels measures a little less than 50% of the frame length.
  • Each medium jet delivery unit 12 is moved back and forth along a longitudinal frame strut 3 between two end positions. One end position is located near a frame corner, the other end position near the opposite frame corner of the respective longitudinal strut 3.
  • the objects 20 to be treated are suspended from a goods carrier 21 and inserted from above through the central region of the frame 2 into the space between the medium jet delivery units 12.
  • the goods carrier 21 can consist, for example, of a rod, on which hooks 23 can be hung, which carry the objects 20 to be treated. In the exemplary embodiment, this rod runs along the longitudinal axis of the frame 2.
  • a cover 22 can be arranged above the product carrier 21. In the exemplary embodiment, this cover 22 is gable-shaped. It is connected by vertical struts to the goods carrier 21 and thus also to the bar of the goods carrier. In Fig. 1, the cover 22 and the article carrier 21 are not shown, the connecting struts.
  • each medium jet delivery unit 12 consists of a vertically running support rod 24, which is provided with an angle piece 25 in its upper end region.
  • the angle piece 25 is fastened with its horizontal leg, for example on a linear slide 19.
  • the linear slide 19 is connected to the wire rope 10 by means of a suitable fastening element.
  • Two or more medium-jet delivery devices 32, each with a plurality of nozzle bars 28, are fastened to the carrier bar 24 (cf. FIGS. 4 and 5).
  • the nozzle rods 28 have a round cross section. They are preferably made from round bar pieces.
  • the round bar pieces are provided with a longitudinal bore and the end faces or the end face of each longitudinal bore are subsequently closed.
  • the wall has a plurality of outlet nozzles 29.
  • Each outlet nozzle 29 is formed by a radial bore in the wall.
  • the outermost section 30 of each bore is flared (see FIG. 6).
  • the outlet nozzles 29 must not be too short so that the medium jets are concentrated sufficiently. Therefore, the wall of a nozzle rod 28 must also have a certain thickness. Since commercially available pipes have walls that are too thin, they are unsuitable for the production of the nozzle rods 28.
  • the conically widened, outer section 30 of each outlet nozzle 29 reduces the swirling of the medium jet at the outer mouth of the nozzle 29.
  • the outlet nozzles 29 are arranged in two parallel longitudinal rows (cf. FIGS. 7a to 7d).
  • the outlet nozzles 29 of the one row can be arranged offset with respect to the outlet nozzles 29 of the other row (cf. FIGS. 7a and 7b) or also non-offset (cf. FIGS. 7c and 7d).
  • the objects 20 to be treated usually have surfaces which are aligned at right angles to the direction of movement of the medium jet delivery units 12. Such surfaces are insufficiently impacted by the medium jets if all medium jets run parallel to these surfaces.
  • the arrangement of the outlet nozzles 29 described above means that the medium jets run at different angles with respect to the direction of movement of the medium jet delivery unit 12. As a result, all surfaces of the objects 20 to be treated can be sufficiently impacted by the medium jets (cf. FIG. 8).
  • each nozzle rod 28 is connected to a compressed air source 36 via a medium line 31.
  • a compressor can serve as the compressed air source 36.
  • Each medium line 31 can be opened and closed with its own valve 18.
  • the valves 18 are connected to a control device via control cables. With the control device, the opening duration and the opening frequency of each valve can be individually defined.
  • the pulse frequency is preferably in a range from 5 to 50 Hertz.
  • the control cables and medium lines 31 are guided upwards out of the container along the support rod 24.
  • the nozzle rods 28 are arranged in vertical rows. Each row forms a medium jet delivery device 32.
  • each medium jet delivery unit 12 has two medium jet delivery devices 32.
  • Each medium jet delivery device 32 also comprises four nozzle rods 28.
  • the carrier rod 24 and the uppermost nozzle rods 28 protrude from the top of the frame 2.
  • the cover 22 and the article carrier 21 can also be exposed to medium jets.
  • the cover 22 and the goods carrier 21 are first dried, for example with high air pressure. Only then do you dry the goods with lower air pressure. This prevents liquid from dripping onto the goods carrier 21 or from the cover 22 while the goods are drying.
  • the nozzle rods 28 of a medium jet delivery unit 12 can run parallel or obliquely to the carrier rod 24 (cf. FIGS. 4 and 5). In the exemplary embodiment, the angular position of the nozzle rods 28 is parallel with respect to the carrier rod 24.
  • the oblique arrangement of the nozzle rods 28 results in an optimal distribution of the medium jets, in particular the compressed air jets, to the objects to be dried. So that the medium jets, in particular the compressed air jets, of two nozzle bars 28 lying next to one another do not overlap, the valves 18 of the two nozzle bars 28 are opened and closed at different times.
  • the medium jet delivery units 12 are moved in opposite directions on both sides of the frame, then they intersect at a specific point. If all of the nozzle rods 28 now run vertically, then when air is used as the medium, the compressed air jets directed against one another meet. This will at least partially remove the air pressure. This effect can be counteracted by angling the nozzle rods 28 with respect to the vertical. As a result, the areas in which the compressed air jets collide exactly can be significantly reduced, which leads to an increase in efficiency.
  • the air pressure can the medium jet delivery unit 12 can be changed separately.
  • This can be achieved, for example, by the compressed air line, which is a medium jet delivery unit 12 feeds, installs a plurality of valves 35 connected in parallel (see Fig. 1).
  • Either valves with an upstream valve are used Pressure reducers or adjustable pressure reducing valves.
  • the first valve 35 reduces, for example the pressure to 4 bar, the second to 3 bar, the third to 2 bar and the fourth to 1 bar.
  • the open one Valve 35 determines the pressure of the air which is in the Medium jet delivery device 32 of the medium jet delivery unit 12 is directed.
  • the air pressure can thus shape and Size of the objects to be dried 20 can be adjusted.
  • Others can open the medium valves 37, 38 or 39 Media as air are fed to the nozzle rods 28.
  • a first medium e.g. Rinse water
  • a second medium e.g. Steam fed to the nozzle rods 28.
  • a third medium valve 39 e.g. Cleaning liquid
  • the medium pressure can by upstream (not shown) pressure reducer to be treated Items 20 are adjusted. The in the media lines and nozzle rods 28 remaining residual liquids are blown out with low air pressure. Subsequently then the surfaces of the objects can be removed with normal air pressure 20 be blown off.
  • Liquid adhering to the surfaces of objects 20 can be blown off and possibly reused. The carryover and consumption are minimized. With longer blow-off times, spot-free drying is achieved. If necessary, the drying effect can be enhanced with warm, circulating air.
  • This first step can be followed by a second step if necessary. In this second step, for example, rinse water is sprayed onto the surfaces of the objects 20 and then immediately blown off again. This process can be repeated until the parts are clean and / or stain-free dry. It is also possible, for example, to spray the parts with steam in an intermediate step in order to achieve an additional cleaning effect.
  • a cleaning liquid is sprayed onto the objects 20.
  • the cleaning liquid is then blown off and returned to the storage tank, for example.
  • clean rinse water is sprayed onto the objects.
  • the rinse water is also blown off immediately. This process can be repeated until the parts are clean and / or dry without stains.
  • the proposed pulse blow-off spray cleaning device 1 has significant advantages over the known pulse blow dryers: In addition to blowing off and / or drying with compressed air, the same device can be used to wet, rinse, clean and / or treat surfaces with different liquids (for example water, cleaning liquid, etc.).
  • different liquids for example water, cleaning liquid, etc.
  • the proposed pulse blow-off spray cleaning device 1 does not have to be firmly connected to a container, it can be placed on any container. However, it can also be used in an existing drying oven, for example. They can also be installed in a crane (transport device). Furthermore, the treatment times when using the proposed pulse blow-off spray cleaning device 1 are shorter than in known pulse blow dryers. Because two or more medium jet delivery units 12 can be arranged on each frame side, the time it takes for the medium jets, in particular the compressed air jets, to pass all objects 20 to be dried to pass can be reduced by at least 50%.
  • the efficiency of the proposed pulse blow-off spray cleaning device 1 is considerably higher than in the case of the nozzle nozzles 28, thanks to the improved nozzles 29, the double rows of nozzles, the double medium jet dispensers 32 and the oblique arrangement of the nozzle rods 28 conventional pulse blow dryers, less energy is required for the same drying effect, or a greater drying effect can be achieved with the same amount of energy.
  • the proposed pulse blow-off spray cleaning device 1 thanks to the vertical arrangement of the medium jet delivery unit 12, a simpler construction can be realized than with conventional pulse blow dryers with horizontally arranged medium jet delivery devices.
  • the medium lines and the control cables can namely be led out of the container at the top.
  • the proposed pulse blow-off spray cleaning device 1 is so in terms of manufacturing, time and maintenance cheaper than the known pulse blow dryer. It also takes up less space. thanks to this There will be a lot of interest in the market.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Drying Of Solid Materials (AREA)

Claims (14)

  1. Dispositif pour la dispersion sous pulsions d'un médium pour traitement de surfaces d'objets insérables (20) dans un récipient (8) ayant des parois (9), l'installation en forme de carré vue de dessus (1) disposant d'unités de dispersion en forme de jets placés sur deux côtés opposés (12), qui sont reliés par des moyens d'entraínement (10, 11 et 13 jusqu'à 17 et 19) de manière telle, qu'un mouvement relatif entre les objets à traiter et le jet du médium pendant la dispersion du médium a lieu,
    caractérisé par le fait que
    le dispositif (1) est formé par un cadre amovible (2) des parois du récipient (9) pouvant être mis en place, disposant d'étais longitudinaux et en travers (3, 4), un des étais ou des étais opposés ayant fixé une ou plusieurs unités de dispersion de jet de médium (12) qui pendent verticalement.
  2. Dispositif selon la revendication 1, caractérisé par le fait qu'un chariot linéaire (19) placé sur le cadre (2) permettant l'accrochage des unités de dispersion de jets de médium (12) est prévu, sur lequel un moyen de tirage (10) est fixé qui provoque un mouvement des unités de dispersion de jet de médium (12).
  3. Dispositif selon la revendication 2, caractérisé par le fait qu'un moteur électrique (13) est prévu comme moyen d'entraínement qui entraíne une roue d'entraínement (14) sur laquelle une chaíne d'entraínement (16) est montée qui met en mouvement le chariot linéaire (19) par une poulie de renvoi (15) et à l'aide d'un entraíneur (17), un fil de fer (10) passant par des poulies de renvoi (11) au coins du cadre (2) est utilisé comme moyen de traction du chariot linéaire (19).
  4. Dispositif selon la revendication 3, caractérisé par le fait qu'une poulie de renvoi (11) est montée dans un coin du cadre (2) pour la conduite du fil de fer (10) qui assure un mouvement parallèle et à contre sens des chariots linéaires (19) prévus aux côtés opposés sur les étais longitudinaux (3) du cadre (2), pendant que, pour effectuer un mouvement parallèle et à contre sens des chariots linéaires (19), une poulie de renvoi (11) est prévue sur un des étais longitudinaux (3) à un coin du cadre (2) et deux poulies de renvoi (11) sont prévues au coin du cadre opposé pour conduire le fil de fer (10).
  5. Dispositif selon les revendications précédentes, caractérisé par le fait que l'unité de dispersion du jet de médium (12) est construite avec une barre porteuse disposée verticalement, comportant une grande quantité de barres de buses creuses (28) fixées sur au moins un dispositif de dispersion de jet de médium (32), les buses étant disposées parallèlement ou en travers de la barre porteuse.
  6. Dispositif selon la revendication 5, s'il se réfère à une des caractéristiques 2 à 4, caractérisé par le fait que la barre porteuse (24) dispose d'une pièce angulaire dans la région du bout qui est fixée avec un angle horizontal au chariot linéaire (19).
  7. Dispositif selon la revendication 5, caractérisé par le fait que les barres de buses (28) disposent de préférence d'un diamètre circulaire et de parois épaisses, ces parois disposant d'une grande quantité de barres de buses d'échappement (29), dont la partie la plus à l'extérieur (30) s'ouvrant de manière conique.
  8. Dispositif selon la revendication 7, caractérisé par le fait que les buses d'échappement (29) sont placées sur les barres de buses (28) dans deux rangées parallèles longitudinales, les rangées étant disposées alternativement ou non les unes contre les autres.
  9. Dispositif selon les revendications 5 à 8, caractérisé par le fait que les barres de buses (28) forment un angle par rapport à la verticale.
  10. Dispositif selon les revendications 5 à 9, caractérisé par le fait que si le médium est l'air, chaque barre de buses (28) est reliée par une conduite de médium (31) avec une valve correspondante (18) pour ouvrir ou fermer la conduite de médium à une source d'air comprimé (36), la conduite de médium étant placée le long de la barre porteuse (24) verticalement contre le haut.
  11. Dispositif selon la revendication 10, caractérisé par le fait qu'un dispositif de commande pour fixer la durée d'ouverture et la fréquence d'ouverture des valves (18) est relié aux valves (18) par des câbles de commande, la conduite de commande étant placée le long de la barre porteuse (24) verticalement contre le haut.
  12. Dispositif selon les revendications précédentes, caractérisé par le fait que plusieurs valves connectées parallèlement (35, 37, 38, 39) sont engagées dans une conduite alimentant l'unité de dispersion de jet de médium (12), qui permettent le réglage d'une pression précise, divers différents médias pouvant être utilisés les uns après les autres.
  13. Dispositif selon les revendications précédentes, caractérisé par le fait que les unités de dispersion de jet de médium sont formés de manière telle, qu'un porteur d'objets (21) pour transporter les objets à traiter depuis en haut par la partie centrale du cadre (2) dans l'espace entre les unités de dispersion de jet de médium et/ou une couverture (22) placée au dessus du porteur d'objets peuvent être couverts par des jets de médium.
  14. Dispositif selon les revendications précédentes, dont le médium peut être de l'air comprimé, de l'eau de rinçage, un liquide de nettoyage ou de la vapeur.
EP97928096A 1996-08-16 1997-07-03 Dispositif de projection intermittente d'un agent pour le traitement de surfaces Expired - Lifetime EP0918974B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH201596 1996-08-16
CH201596A CH691927A5 (de) 1996-08-16 1996-08-16 Vorrichtung zum gepulsten Ausgeben eines Mediums zur Behandlung von Oberflächen.
CH2015/96 1996-08-16
PCT/CH1997/000261 WO1998008040A1 (fr) 1996-08-16 1997-07-03 Dispositif de projection intermittente d'un agent pour le traitement de surfaces

Publications (2)

Publication Number Publication Date
EP0918974A1 EP0918974A1 (fr) 1999-06-02
EP0918974B1 true EP0918974B1 (fr) 2000-02-02

Family

ID=4223913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97928096A Expired - Lifetime EP0918974B1 (fr) 1996-08-16 1997-07-03 Dispositif de projection intermittente d'un agent pour le traitement de surfaces

Country Status (4)

Country Link
EP (1) EP0918974B1 (fr)
CH (1) CH691927A5 (fr)
DE (1) DE59701099D1 (fr)
WO (1) WO1998008040A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435538A (en) * 1967-03-08 1969-04-01 Lawrence W Hargett Web drying apparatus having multiple hot air nozzles and exhaust outlets
EP0486711B1 (fr) * 1990-11-19 1994-08-03 Ernst Eichholzer Dispositif pour l'enlèvement par soufflage d'un liquide se trouvant sur un objet
DE4328199C1 (de) * 1993-08-21 1994-10-13 Duerr Gmbh & Co Verfahren und Einrichtung zum Trocknen eines nach einer Bearbeitung mit einer Reinigungsflüssigkeit gereinigten Werkstücks
DE4336085A1 (de) * 1993-10-22 1995-04-27 Atotech Deutschland Gmbh Verfahren zum Entfernen von Flüssigkeit von der Oberfläche eines benetzten Behandlungsgutes und Anordnung zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
EP0918974A1 (fr) 1999-06-02
WO1998008040A1 (fr) 1998-02-26
DE59701099D1 (de) 2000-03-09
CH691927A5 (de) 2001-11-30

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