EP0789635B1 - Procede et dispositif pour l'enlevement de particules de poussiere sur une bande de materiau en mouvement relatif - Google Patents

Procede et dispositif pour l'enlevement de particules de poussiere sur une bande de materiau en mouvement relatif Download PDF

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Publication number
EP0789635B1
EP0789635B1 EP95928936A EP95928936A EP0789635B1 EP 0789635 B1 EP0789635 B1 EP 0789635B1 EP 95928936 A EP95928936 A EP 95928936A EP 95928936 A EP95928936 A EP 95928936A EP 0789635 B1 EP0789635 B1 EP 0789635B1
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EP
European Patent Office
Prior art keywords
material web
unit
dust particles
suction
nozzle
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Expired - Lifetime
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EP95928936A
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German (de)
English (en)
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EP0789635A1 (fr
Inventor
Robert Schneider
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Patent Consulting and Development GmbH
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Patent Consulting and Development GmbH
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Priority claimed from CH02719/94A external-priority patent/CH687957A5/de
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Publication of EP0789635A1 publication Critical patent/EP0789635A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B6/00—Cleaning by electrostatic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • B08B5/023—Cleaning travelling work
    • B08B5/026—Cleaning moving webs

Definitions

  • the invention relates to a method according to the preamble of Claim 1 and a device according to the preamble of Claim 4.
  • dedusting systems for moving material webs also called web cleaning systems
  • web cleaning systems can be roughly non-contact, and divided into those working with brush support become.
  • the dust particles with rotating brush roller or stationary brush grater mechanically detached from the material web and then suctioned off.
  • the brush quality, as well as its thickness, material and design the bristles were going to the properties of the cleaning material surface.
  • non-generic Dust collectors are in the Bundesvious Druck e.V., Postfach 1869, Biebricher Allee 79, D - 6200 Wiesbaden 1, "Technical Information Service", II / 1985, pp. 1 to 20, as well as in the WO87 / 06527.
  • Dedusting systems that operate without contact have a blowing unit on which a gas jet on the web to be cleaned led, as well as a suction unit with which the dust particles absorbing gas was sucked off again. With the blowing unit together or in the vicinity, discharge electrodes were used for discharging the dust particles located on the material web.
  • Such dedusting systems are from the EP-A 0 245 526, EP-A 0 520 145, EP-A 0 524 415, the EP-A 0 395 864 and CH-A 649 725 are known.
  • a non-generic cleaning system for removing one on a moving belt, especially a rolled belt adhering liquid is described in DE-A 4 215 602.
  • the problems that arise with a dedusting system also include particles adhering to the surface due to electrostatic forces did not result here.
  • the invention solves the task of dedusting a moving, stable, which cannot be vibrated for dedusting To carry out material web in which dispenses with discharge electrodes can be.
  • the invention is based on the 1st surprising finding, that just by choosing a gas stream, especially its pressure on an area of a material web surface to be dedusted as well as the selection of the distance of this area Efficient dedusting is possible from a grounded surface. It is now assumed that efficient dust removal only is then possible if on the area to be dedusted generated gas pressure of the gas stream is so great that the product from the gas pressure and the above distance according to the law of Paschen's corresponding critical stress is less than that electrostatic voltage (charge) of the dust particles, which this mainly adheres to the surface of the material web. I.e. under these conditions the self-discharge takes place Dust particles. You will be neutralized. You are now only liable due to the significantly smaller Van der Waals force and others not electrostatic forces. The gas velocity of the Conditions of the gas flow generating Paschen's law is now still so high to include only the slightly adhering dust particles to remove.
  • the discharge effect (Paschen's law) is still affected by the Balloelectricity effect (waterfall electricity, Lenard effect) supports, as it through the narrowing nozzle cross-section arises. This is done at least partially Ionization of the gas flowing through, here air, without use any ionization unit requiring electrical energy.
  • the second surprising finding is based on the fact that through the Special design of the suction unit the gas flow at a deflection angle is deflected and thus the necessary suction effect of the Conveys dust particles into the suction unit.
  • the required gas flow is preferably through the Design of the blowing unit and / or the suction unit, such as it is or are described in the dependent claims, reachable.
  • FIG. 1 the electrostatic and Van der Waals forces E and W acting on dust particles S are shown schematically.
  • the dust particles S are often also held in place by liquid bridges F.
  • the gas flow G acting on the dust particles S occurs on the right side B of FIG. 1 .
  • the gas stream G is drawn off on the left side A.
  • the law of Paschen is now used for the dedusting of a material web 1 .
  • the dust particles S adhere to them due to their electrical charge.
  • an injection unit 3a / b of the dedusting device with an earthed potential area is arranged at a distance d from the material web surface, and the speed and pressure between the material surface and the potential area of the supersonic gas stream G emerging from the injection unit 3 are set such that the Voltage caused by the charged dust particles S is equal to the critical voltage U / crit in Paschen's law.
  • the product p ⁇ d required for the critical voltage U / crit can now be selected from FIG .
  • the gas pressure between the material surface carrying the dust particles S and the grounded potential area is set in such a way that, given a given structural distance d between the material surface and the grounded potential area, the value of the product p ⁇ d sought above is approximated.
  • it can be determined how high the electrical charge is. This enables an optimization of the product p ⁇ d during the assembly and adjustment of the dedusting device.
  • the required conditions can be achieved with the supersonic gas flow G.
  • the discharged dust particles S are then picked up by the ultrasonic gas flow G without the use of electrically biased discharge electrodes and sucked off with a suction unit 7 .
  • the high maintenance costs that are required for systems with electrically biased discharge electrodes are therefore eliminated here.
  • the injection unit as well as the suction unit 3a / b or 7a / b are made of metal and grounded. It is therefore the distance of the blowing unit 3a / b from the surface of the material web 1 equal to the distance d of the grounded potential area from it.
  • the surfaces of the blowing unit and the suction unit 3a / b or 7a / b facing the material web 1 can be coated with an electrically conductive layer. For aluminum, for example, an anodizing process would be used to obtain good electrical conductivity.
  • both the upper and lower sides 9a and 9b of the material web 1 can be dedusted.
  • one blowing-in 3a and 3b and one suction unit 7a and 7b are arranged above the top and also below the bottom 9a and 9b .
  • the movement of the material web 1 takes place in the direction of the arrow 11 .
  • the conveying speed of the material web 1 is 4.75 to 15 m / s in the exemplary embodiment described here. The conveying speed has no influence on the efficiency of the dedusting device.
  • the blowing device 3a or 3b described below is designed in such a way that an ultrasound gas stream, here an ultrasound air stream G, emerges from it.
  • the gas stream G emerging from the blowing device 3a / b hits the surface of the material web 1 at an angle ⁇ between 20 ° and 100 °, preferably between 30 ° and 55 °, against its direction of movement 11 .
  • the suction of the dust particles S lifted off the material surface takes place downstream in the flow direction 25 of the outflowing gas G at a first angle ⁇ between 20 ° and 70 °, preferably below approximately 45 ° and again at a second point approximately perpendicular to the material surface. This second suction acts in particular on dust particles S lying in depressions and holes.
  • the blowing unit 3a / b has a two-part nozzle structure, described below.
  • a pressure channel 13 as a gas supply unit
  • a continuously tapering nozzle cross-section 15 which, after a constriction 17, merges into a continuously expanding nozzle cross-section 19 up to the nozzle outlet 20 .
  • the width of the constriction 17 is between 0.02 mm and 0.08 mm, preferably less than about 0.04 mm.
  • the opening angle at the nozzle outlet 20 is between 3 ° and 15 °, but preferably between 5 ° and 10 °.
  • the surface line lying on the left in the cross section of FIG. 3 in the widening nozzle cross section 19 is curved, while the opposite surface line is a straight line 21 .
  • This straight line 21 extends at an angle ⁇ to the plane of the material web 1 .
  • the angle ⁇ is between 20 ° and 100 °, preferably between 30 ° and 55 °.
  • the edge point 22 of this straight line 21 at the nozzle outlet 20 has the smallest distance d from the material web 1 , which is between 0.5 and 2 mm, depending on the material to be dedusted. This distance d corresponds to the distance d of the Paschen's law.
  • the opening 23 between the two blowing units 3a and 3b is designed in the direction of movement 11 as a triple-widening "V", the leg angle of which increases at each transition step 24a and 24b .
  • the gas emerges from the nozzle opening 20 , as indicated by an arrow 25 in FIG. 3 , obliquely onto the material web 1 against its direction of movement 11 in the direction of the relevant suction unit 7a or 7b ,
  • the edge point 22 is designed as a sharp edge. As a result of this sharp edge 22 , when the supersonic flow G emerges from the nozzle outlet 20, a flow vortex region is created, the turbulence of which removes the dust particles S discharged according to the Paschen law from the surface 9a or 9b of the material web 1 against the Van der Waalschen Forces W supports.
  • the blowing units 3a and 3b are made of metal and are grounded by a schematically illustrated electrical grounding analogous to the suction unit 7a and 7b .
  • the nozzle outlet 20 lies in a plane 6 which intersects the material web 1 at an angle between 25 ° and 65 °, preferably below 45 °.
  • the two suction units 7a and 7b are arranged and formed symmetrically to one another.
  • Each of the two suction units 7a and 7b has two suction channels 27 and 29 , which open into a suction chamber 30 .
  • the inputs of the suction channels 31a and 31b are arranged in a plane 33 , which is at a constant distance from the top or bottom 9a or 9b of the material web 1 .
  • the plane 33 is at the same time the upper side of the suction unit 7a or 7b opposite the upper or lower side of the material.
  • the suction units 7a and 7b are preferably made of electrically conductive material (metal).
  • the plane 33 is set back in relation to the nozzle outlet 20 . This reset can also be smaller.
  • the level 33 could also be arranged directly after the nozzle outlet 20 .
  • the suction channel 27 has a funnel-shaped tapering suction mouth 35 which is inclined towards the surface of the material web 1 .
  • the inclination of the suction mouth 35 is directed towards the nozzle outlet 20 .
  • the surface line 36a of the funnel-shaped suction mouth 35 facing the nozzle outlet 20 has an angle ⁇ that is as flat as possible to the surface of the material web 1.
  • the angle ⁇ is between 15 ° and 30 °.
  • the other surface line 36b of the suction mouth 35 opposite the surface line 36a is steeper and points to Surface of the material web 1 at an angle ⁇ between 20 ° and 70 °. Since the suction mouth 35 should in any case be funnel-shaped, it is of course forbidden that the two extreme angle values of 30 ° can be used together at the angles ⁇ and ⁇ .
  • the suction mouth 35 then merges into a narrowed channel piece 37 , one surface line of which is the extension of the surface line 36b .
  • This channel piece 37 extends to a further channel piece 39 , which then opens into the suction chamber 30 .
  • the distance h from the intersection of the shell line 36b with the plane 33 from the edge 22 is ten to twenty-five times the distance d .
  • the suction channel 27 is flushed away from dust particles S which may be adhering to it.
  • the suction channel 29 is also funnel-shaped, but its surface line 40a facing the nozzle outlet 20 extends perpendicular to the surface of the material web 1 , while the surface line 40b lying opposite it runs slightly inclined to the surface of the material web 1 .
  • the suction chamber 30 has a profiling 44 on at least one of its opposite walls. This profile 44 is used to hang flow baffles, not shown. The flow baffles are necessary so that approximately the same pressure conditions prevail in the suction chamber 30 over all mouths of the channels 27 and 29 .
  • the dust particles S are lifted off by the supersonic air flow G , supported by the swirling, caused by the edge 22 against the Van der Waals forces acting on them.
  • the dust particles S are sucked off through the suction channels 27 and 29 , the channel 29, which runs almost perpendicular to the surface of the material web 1 , mainly serving to receive dust particles S from depressions and holes.
  • the air blown in through the blowing unit or units 3a and 3b and the suction power of the suction unit or units 7a and 7b is in the temperature range from 18 ° C. to 23 ° C.
  • the room in which the dedusting device is located prevails Overpressure.
  • flow influencing elements 49 , 50 and 51 can be arranged in the expanding nozzle cross section 19 of the injection unit 3a and 3b , as well as in the two suction channels 27 and 29 , as indicated in FIG .
  • the flow influencing elements 49 arranged in the nozzle area 19 on the wall 21 are narrow longitudinal webs, as are shown in a plan view in viewing direction IX in FIG. 9 .
  • Each longitudinal web 49 lies in a plane running parallel to the direction of movement 11 , which is at an angle of 82 ° to the material web 1 .
  • the longitudinal webs 49 have a width of 1 mm and a mutual spacing of 15 mm.
  • the rows of webs 50 and 51 arranged in the suction channels 27 and 29 are narrow longitudinal webs, as shown in a plan view in the viewing direction X in FIG. 10 .
  • Each longitudinal web 50 and 51 lies in a plane also parallel to the direction of movement 11 , which extends at an angle of 60 ° to the material web 1 .
  • the longitudinal webs 50 and 51 have a width of 2 mm and a mutual spacing of 30 mm.
  • a further blowing unit can also be arranged on each side of the suction unit or units 7a and 7b .
  • material webs 46 deflected by a deflection unit 45 can also be dedusted.
  • the position of the blowing unit, as well as that of the suction unit, is then, as shown in FIG. 7 , adapted to the course of the material web 46 .
  • the angle of detachment of the material web 46 from the deflection unit 45 is preferably between 15 ° and 20 ° in order not to cause an unnecessary increase in electrical charging due to charge exchange and charge separation.
  • the above-mentioned division of the injection unit 3a or 3b into two parts with the parts 3 ' and 3'' allows a simpler manufacture compared to a one-piece design.
  • the division takes place along line 47 , which merges into straight line 19 .
  • Sealing takes place via a sealing ring 48 , the course of which is laid depending on the use of the row of nozzles 43 or the longitudinal slot 41 . Due to the division of the injection unit 3a or 3b , a simple production of the flow influencing elements 49 is only possible.
  • the blowing unit 3a and 3b , as well as the associated suction units 7a and 7b are preferably designed as blocks, which can be attached to one another in parallel to the movement of the material web 1 , in order to be able to adapt the width of the dedusting device to the respective material web width to be dedusted.
  • the dedusting device Instead of moving the web of material, of course also moved the dedusting device over the material web become. Usually, however, the material web is or between the nozzle exits and inlets.
  • the dedusting device described above can be used for dedusting of any sheet-like and plate-like material, such as press chipboard, blockboard, plastic, paper, Cardboard tapes, glass, general foils, metal and medical foils, Textiles, printed circuit boards, industrial braids, film and magnetic strips etc. can be used.
  • sheet-like and plate-like material such as press chipboard, blockboard, plastic, paper, Cardboard tapes, glass, general foils, metal and medical foils, Textiles, printed circuit boards, industrial braids, film and magnetic strips etc.
  • a unit 53 shown in FIG. 11 can also be used, which represents a union of a blowing with a suction unit. Furthermore, in contrast to the blowing units 3a and 3b , the flow velocity in the subsonic area is used; however, it is also possible to work in the area of the speed of sound.
  • the unit 53 is also made up of two grounded nozzle parts 54a and 54b and has a constriction 55 of the nozzle channel cross section 56 . Starting from a pressure channel 57 designed analogously to the pressure channel 13 , this nozzle also has a tapering nozzle cross-section 59 (analogous to FIG.
  • the narrow constriction 55 which has straight surface lines is advanced to the nozzle outlet 60 and is therefore significantly longer. This means that there is a stronger ionization effect (balloeloctricity) on the flowing stream.
  • the axis of the constriction 55 has a preferred angle ⁇ of approximately 51 ° with the tangent 68 to the material surface 71 .
  • Other values for the angle ⁇ between 20 ° and 100 ° and in particular between 30 ° and 55 ° can also be used.
  • the value listed in the exemplary embodiment permits optimal work, in particular with regard to low air consumption and good pressing of the material web 71 to be dedusted against the drum 74 (pressure cylinder).
  • this unit 53 also has a flow widening nozzle cross-section, which is now formed here by the space 61 in front of the nozzle outlet 60 .
  • the edge 63 of the one nozzle channel side which is designed analogously to the lower edge 22, is outwards by an edge height a of 0.1 mm to 0.9 mm, here by 0.6 mm extended. This extension causes on the one hand a nozzle channel expansion and on the other hand a deflection of the escaping stream, as indicated by arrow 64 .
  • This stream thus produces a suction effect, which conveys the dust particles into the suction unit 65 , which ultimately ensures the flow direction through an arranged row of webs in the suction channel and, lastly, has a very important role for the conveyance of dust particles up to the suction hose.
  • the width b of the constriction 55 is adjusted together with the gas pressure in the pressure channel 57 in such a way that optimal dedusting takes place with the lowest possible air consumption.
  • the width of the constriction is 0.04 mm at a pressure of 1.5 bar in the pressure channel 57 and a distance d / 53 of 4 mm to 7 mm, preferably 5 mm.
  • the inclination of the narrowed nozzle channel 55 with respect to the tangent 68 to the material web 71 is here, for example, 51 °.
  • the suction unit integrated in the unit 53 consists of a suction channel 65 which is approximately similar to the suction channel 35 , 37 and 39 , with the one channel wall being formed here only by a correspondingly shaped sheet metal 67 which can be attached, in a simpler design.
  • the inlet of the suction channel 65 has an acute angle ⁇ in the transport direction 70 of the material web.
  • the angle ⁇ should have a value between 20 ° and 50 ° and should preferably be between 33 ° and 39 °.
  • the edge of the inlet opening of the suction channel 65 facing away from the nozzle outlet 60 is located at a distance e , which is 17 mm in the exemplary embodiment.
  • the pressure channel 57 is divided into individual subchannels in the direction transverse to the material web 71 .
  • These sub-channels which are not explicitly shown and which are identical in FIGS. 11 and 12 with the reference number 57 , are each connected to a supply chamber 69 via a supply channel which can be closed by a piston (not shown).
  • the supply ducts have slightly changing flow cross-sections to equalize the pressure.
  • the pistons can be adjusted via a mechanism (not shown) such that one supply channel after the other and thus also one partial channel after the other can be separated from the air supply and thus from the supply chamber 69 starting from the outer periphery. This allows adaptation to the web width that is actually to be cleaned. Only the required number of subchannels is supplied with compressed air and thus the air consumption is optimized, ie minimized.
  • FIG. 12 The arrangement of the blowing / suction unit 53 in a dedusting device for sheet-like material 71 is shown in FIG . 12 .
  • the sheets 71 to be cleaned are each held and held with a clamp 72 on a first drum 73 (feed cylinder).
  • the transfer to a second drum 74 (printing cylinder) takes place in its approach location 76 with adjacent clamps 72 and 75 , the clamp 72 being opened synchronously with one another and the clamp 75 being closed for sheet acceptance.
  • the illustration in FIG. 12 shows the good 71 already gripped by the clamp 75 with the clamp 72 open, a part of the sheet-like good 71 still resting on the drum 73 and being pulled onto it.
  • the blow-in / suction unit 53 is assigned to the drum 74 , on which safety rollers 77 are arranged in the transverse direction to the width of the goods 71 , which should ensure that the sheet-like goods 71 are guided in the event of an air flow failure or a faulty sheet transfer.

Landscapes

  • Cleaning In General (AREA)
  • Filtering Materials (AREA)
  • Detergent Compositions (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Glass Compositions (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Nonmetallic Welding Materials (AREA)

Claims (13)

  1. Procédé pour l'enlèvement de particules de poussière sur une bande de matériaux en mouvement relatif (1, 71) comprenant un dispositif de dépoussiérage fonctionnant sans contact, caractérisé en ce qu'une surface plane conductrice (6, 33; 54a; 54b) faisant face à la bande de matériaux (1, 71) d'une unité d'injection (3a, 3b; 53) d'un dispositif de dépoussiérage est disposée à une distance (d; d/53) de la bande de matériaux (1; 71), la vitesse et la pression (p) de la bande de matériaux devant être impérativement dépoussiérée par rapport à la surface potentielle (6, 33; 54a; 54b) d'un flux gazeux (G) provenant de l'unité d'injection (3a, 3b; 53) étant définies de telle manière que la tension de seuil (U/crit) qui correspond au produit de la pression (p) et de la distance (d ; d/53) selon la loi de Paschen est inférieure à la tension électrostatique (E) des particules de poussière (S) sur la bande de matériaux (1; 71) qui sont alors neutralisées, la poussée (E/W) exercée par les particules de poussière sur la bande de matériaux étant ainsi contenue, et lesdites particules (S) étant prélevés uniquement par le flux gazeux (G) sans recours à une unité d'ionisation exigeant de l'énergie électrique, et étant aspirées au moyen d'au moins une unité d'aspiration (7a, 7b ; 65).
  2. Procédé selon la revendication 1, caractérisé en ce que le flux gazeux, plus particulièrement un flux d'air (G), est émis selon un angle (α, σ) compris entre 20° et 100°, et de préférence entre 30° et 55°, par rapport à la bande de matériaux (1; 71) et est aspirée par au moins une unité d'aspiration (7a, 7b; 65) qui se trouve en aval du flux gazeux, c'est à dire en amont par rapport à la direction de déplacement des matériaux (11; 70).
  3. Procédé selon la revendication 2, caractérisé en ce que les particules de poussière (S) qui sont soulevées par le flux gazeux (G) sur la bande de matériaux sont prélevées par une première ouverture d'aspiration (27; 65) qui est inclinée selon un angle (σ, ) compris entre 20° et 70°, et de préférence de 45°, par rapport à la direction du flux gazeux (25), et sont de préférence prélevées par une deuxième ouverture d'aspiration supplémentaire qui est à peu près perpendiculaire à la bande de matériaux (1).
  4. Dispositif de dépoussiérage pour la mise en oeuvre du procédé selon l'une des revendications 1 à 3 comportant une unité d'injection (3a, 3b; 53) qui est reliée à une unité d'alimentation (13; 57) ainsi qu'une unité d'aspiration (7a, 7b; 65), caractérisé en ce l'unité d'injection (3a, 3b; 53), prolongeant l'unité d'alimentation (13, 57), comporte une buse de section transversale effilée (15; 59) se prolongeant par une section élargie (19; 61) après un rétrécissement (17; 55), l'unité d'injection (3a, 3b; 53) présentant une surface plane conductrice d'électricité (6, 33; 54a, 54b) disposée en face de la bande de matériaux (1; 71) transportant les particules de poussière (S), dans laquelle la pression en gaz de l'unité d'alimentation (13; 57), ainsi que la distance (d, d/53) de la surface plane (6, 33, 54a, 54b) à la bande de matériaux (1 ; 71) à dépoussiérer en continu dans tous les cas peuvent être définies de telle manière que les particules de poussière (S) soient prélevées sans utilisation aucune d'une unité d'ionisation reliée à une source l'alimentation électrique pour ioniser le flux gazeux, et soient aspirées par l'unité d'aspiration (7a, 7b ; 65).
  5. Dispositif selon la revendication 4, caractérisé en ce que la pression en gaz au sein de l'unité d'alimentation (13; 57), la distance (d; d/53) entre la surface plane (6, 33, 54a, 54 b) et la bande de matériaux (1; 71) à dépoussiérer, ainsi que la forme de la section transversale de la buse (15, 17, 19 ; 59, 56, 55, 61) et son positionnement au dessus de la zone à dépoussiérer sont définies de telle manière que, en fonction du produit de la distance (d, d/53) et de la pression en gaz (p) générée par l'unité d'injection (3a, 3b) par la pression au sein de l'unité d'alimentation (13 ; 57) entre la surface plane (6, 33, 54a, 54b) et la bande de matériau (1 ; 71) devant impérativement être dépoussiérée et en mouvement continu, la tension de seuil (U/crit) selon la loi de Paschen reste inférieure dans la zone à la tension électrostatique (E) des particules de poussière (S) et autres.
  6. Dispositif selon l'une revendications 4 ou 5, caractérisé en ce que l'extrémité de la buse est disposée de telle manière que le flux gazeux en sortie soit dirigée à l'opposé du sens de déplacement de la bande de matériau (1; 71).
  7. Dispositif selon l'une des revendications 4 à 6, caractérisé en ce que l'axe du conduit (21 ; 55) de la buse de l'unité d'injection (3a, 3b, 53) s'étend selon un angle (α, χ) compris entre 20° et 100°, et de préférence entre 30° et 55°, par rapport a' la bande de matériaux (1; 71) ou sa tangente (68).
  8. Dispositif selon la revendication 7, caractérisé en ce que la paroi de la buse de l'unité d'injection (3a, 3b, 53) comporte au moins une zone asymétrique selon son axe, plus particulièrement dans la zone d'ouverture (20, 60) dans laquelle la génératrice du conduit de la buse de l'unité d'injection (3a, 3b, 53) est une droite (21, 55) s'étendant selon un angle (α, σ) compris entre 20° et 100° et de préférence entre 30° et 55° par rapport à la bande (11, 71).
  9. Dispositif selon la revendication 8, caractérisé en ce que la génératrice droite (21, 55) du conduit de la buse de l'unité d'injection se termine par un angle aigu (21, 63) au niveau la sortie (20, 60) de la buse pour produire une zone de turbulence s'étendant jusqu'à la bande de matériau.
  10. Dispositif selon l'une des revendications 4 à 9, caractérisé en ce que l'ouverture d'aspiration (35) de l'unité d'aspiration (27, 65) forme un conduit effilé à partir de l'ouverture d'aspiration (31a), la génératrice de la buse étant une première droite (36a) s'étendant selon un angle (α, χ) compris entre 15° et 50° et plus particulièrement entre 33° et 39° par rapport à la bande (11, 71).
  11. Dispositif selon l'une des revendication 4 à 10, caractérisé en ce que l'unité d'injection (3a, 3b; 53) est composée d'au moins deux parties (3' ; 3'', 54a, 54b), de préférence suivant une ligne de séparation (47) formée par la droite (21, 55) de la génératrice du conduit de la buse.
  12. Dispositif selon l'une des revendications 4 à 11, caractérisé en ce qu'il est séparé en éléments de préférence parallèles à la direction relative du mouvement (11, 70) de la bande (11, 71) pour permettre d'adapter facilement le dispositif à la largeur de la bande (11, 71).
  13. Dispositif selon l'une des revendications 4 à 12, caractérisé en ce qu'une première et une deuxième unité d'injection (3a) sont disposées à distance l'une de l'autre dans la direction relative du mouvement (11) de la bande de matériau (1), une unité d'aspiration (7a) étant disposée sur les deux côtés de ladite unité d'injection, l'axe du conduit de la buse d'injection de la première et de la seconde unité d'injection étant à l'opposé l'un de l'autre.
EP95928936A 1994-09-06 1995-09-06 Procede et dispositif pour l'enlevement de particules de poussiere sur une bande de materiau en mouvement relatif Expired - Lifetime EP0789635B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
CH02719/94A CH687957A5 (de) 1994-09-06 1994-09-06 Verfahren zum Entfernen von Staubpartikeln von einer bewegten Materialbahn sowie Vorrichtung hierzu.
CH2719/94 1994-09-06
CH271994 1994-09-06
CH130295 1995-05-05
CH130295 1995-05-05
CH1302/95 1995-05-05
PCT/CH1995/000196 WO1996007490A1 (fr) 1994-09-06 1995-09-06 Enlevement de particules de poussiere sur une bande de materiau en mouvement relatif

Publications (2)

Publication Number Publication Date
EP0789635A1 EP0789635A1 (fr) 1997-08-20
EP0789635B1 true EP0789635B1 (fr) 1999-08-11

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EP95928936A Expired - Lifetime EP0789635B1 (fr) 1994-09-06 1995-09-06 Procede et dispositif pour l'enlevement de particules de poussiere sur une bande de materiau en mouvement relatif

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Country Link
US (1) US5916373A (fr)
EP (1) EP0789635B1 (fr)
JP (1) JPH10505276A (fr)
CN (1) CN1082849C (fr)
AT (1) ATE183117T1 (fr)
AU (1) AU686897B2 (fr)
BR (1) BR9508885A (fr)
CA (1) CA2199151A1 (fr)
DE (1) DE59506604D1 (fr)
ES (1) ES2137536T3 (fr)
FI (1) FI109097B (fr)
HU (1) HU223697B1 (fr)
LV (1) LV11854B (fr)
MX (1) MX9701649A (fr)
NO (1) NO309970B1 (fr)
NZ (1) NZ300045A (fr)
WO (1) WO1996007490A1 (fr)

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EP0893253A1 (fr) 1997-07-26 1999-01-27 Ernst Marks GmbH & Co KG Machine d'impression avec un dispositif pour le nettoyage du support d'impression au cours de son alimentation
DE10252377B4 (de) * 2002-11-15 2006-11-09 Man Roland Druckmaschinen Ag Verarbeitungsmaschine mit einer berührungslos arbeitenden Entstaubungsvorrichtung
DE102005055312A1 (de) * 2005-11-21 2007-06-06 Hildebrand Systeme Gmbh Absaugvorrichtung zur Entfernung von bei Bearbeitungen an bewegten Materialbahnen entstehenden Partikeln

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ES2169805T3 (es) * 1996-06-24 2002-07-16 Sundwig Gmbh Dispositivo para eliminar liquido de la superficie de una banda.
US6148831A (en) * 1996-10-25 2000-11-21 Valmet Corporation Method for cleaning a web
US6117190A (en) * 1999-08-12 2000-09-12 Raytheon Company Removing soil from fabric using an ionized flow of pressurized gas
DE10016822C2 (de) * 2000-04-06 2002-08-01 Koenig & Bauer Ag Vorrichtung zum Entstauben einer Warenbahn
AU2001286971A1 (en) * 2000-09-01 2002-03-13 Bethlehem Steel Corporation Process for applying a coating to a continuous steel sheet and a coated steel sheet product therefrom
DE10108234B4 (de) * 2001-02-21 2004-03-18 Koenig & Bauer Ag Längsschneideinrichtung für eine materialbahn und Verfahren zur Reinigung der Längsschneideinrichtung
DE10211309A1 (de) * 2002-03-13 2003-09-25 Heidelberger Druckmasch Ag Schneidvorrichtung mit Entstaubungsvorrichtung im Falzapparat einer bahnverarbeitenden Druckmaschine
JP2005034782A (ja) 2003-07-17 2005-02-10 Sony Corp 洗浄装置及び洗浄方法
DE102004057445A1 (de) * 2004-11-24 2006-06-01 Hauni Maschinenbau Ag Vorrichtung zum kontaktlosen Reinigen eines Förderelementes und Anordnung zum Transportieren und/oder Speichern stabförmiger Artikel mit einer Vorrichtung zum kontaktlosen Reinigen eines Förderelementes
DE602004029595D1 (de) * 2004-12-23 2010-11-25 Tetra Laval Holdings & Finance Maschine zum Verpacken fliessfähiger Nahrungsmittel
DE102007000508B4 (de) 2007-10-15 2011-09-15 Koenig & Bauer Aktiengesellschaft Trockner für mindestens eine Materialbahn
DE102007000507B4 (de) 2007-10-15 2010-03-11 Koenig & Bauer Aktiengesellschaft Walze eines Trockners
CN101683649A (zh) * 2008-09-26 2010-03-31 无锡海达安全玻璃有限公司 一种改良的印刷玻璃的除尘装置
DE102009054865B4 (de) 2009-12-17 2014-11-13 Koenig & Bauer Aktiengesellschaft Trockner
DE102011001639A1 (de) 2011-03-29 2012-10-04 Turbofilter Gmbh Vorrichtung zur Oberflächenreinigung bewegter Materialbahnen
CN102199691B (zh) * 2011-05-23 2013-05-01 马鞍山钢铁股份有限公司 一种应用于热处理工艺中退火炉的炉辊组合装置
US8657998B2 (en) * 2011-06-17 2014-02-25 The Procter & Gamble Company Method and apparatus for particulate removal from moving paper webs
US9108229B2 (en) * 2011-06-17 2015-08-18 The Procter & Gamble Company Method and apparatus for particulate removal from moving paper webs
DE102015206747A1 (de) * 2015-04-15 2016-10-20 Voith Patent Gmbh Reinigungsvorrichtung
JP2017202441A (ja) * 2016-05-11 2017-11-16 株式会社Trinc 除塵装置
KR101875715B1 (ko) * 2017-06-27 2018-07-06 윤중식 필름 이물질 건식 제거 장치
CN109396199A (zh) * 2017-08-17 2019-03-01 Posco公司 氧化皮排出装置
CN109092732A (zh) * 2018-08-02 2018-12-28 宁国市双阳精密制造有限公司 一种耐磨材料生产用清理装置
FI12484U1 (fi) * 2019-06-13 2019-10-15 Valmet Technologies Oy Pölynpoistolaite
CN113231396A (zh) * 2021-05-13 2021-08-10 洛阳广纬精工科技有限公司 一种无接触式导轨除尘装置

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US5421901A (en) * 1990-02-14 1995-06-06 Eastman Kodak Company Method and apparatus for cleaning a web
ES2077284T3 (es) * 1991-05-17 1995-11-16 Sundwiger Eisen Maschinen Dispositivo para eliminar liquido de la superficie de un fleje transportado desde una maquina de mecanizacion de flejes.
DE4305907A1 (de) * 1993-02-24 1994-08-25 Sundwiger Eisen Maschinen Vorrichtung zum Entfernen von Flüssigkeit von der Oberfläche eines bewegten Bandes, insbesondere eines Walzbandes an einem Walzgerüst

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0893253A1 (fr) 1997-07-26 1999-01-27 Ernst Marks GmbH & Co KG Machine d'impression avec un dispositif pour le nettoyage du support d'impression au cours de son alimentation
DE10252377B4 (de) * 2002-11-15 2006-11-09 Man Roland Druckmaschinen Ag Verarbeitungsmaschine mit einer berührungslos arbeitenden Entstaubungsvorrichtung
DE102005055312A1 (de) * 2005-11-21 2007-06-06 Hildebrand Systeme Gmbh Absaugvorrichtung zur Entfernung von bei Bearbeitungen an bewegten Materialbahnen entstehenden Partikeln

Also Published As

Publication number Publication date
MX9701649A (es) 1998-02-28
FI109097B (fi) 2002-05-31
NO971002D0 (no) 1997-03-05
FI970940A0 (fi) 1997-03-05
NO971002L (no) 1997-05-05
CN1167451A (zh) 1997-12-10
ES2137536T3 (es) 1999-12-16
LV11854B (en) 1997-12-20
CN1082849C (zh) 2002-04-17
US5916373A (en) 1999-06-29
FI970940A (fi) 1997-03-05
BR9508885A (pt) 1997-12-30
WO1996007490A1 (fr) 1996-03-14
EP0789635A1 (fr) 1997-08-20
ATE183117T1 (de) 1999-08-15
DE59506604D1 (de) 1999-09-16
CA2199151A1 (fr) 1996-03-14
JPH10505276A (ja) 1998-05-26
LV11854A (lv) 1997-10-20
HU223697B1 (hu) 2004-12-28
NZ300045A (en) 1998-08-26
AU3764995A (en) 1996-03-27
NO309970B1 (no) 2001-04-30
AU686897B2 (en) 1998-02-12
HUT76873A (en) 1997-12-29

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