EP1753909B1 - Procede de nettoyage - Google Patents

Procede de nettoyage Download PDF

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Publication number
EP1753909B1
EP1753909B1 EP05740038A EP05740038A EP1753909B1 EP 1753909 B1 EP1753909 B1 EP 1753909B1 EP 05740038 A EP05740038 A EP 05740038A EP 05740038 A EP05740038 A EP 05740038A EP 1753909 B1 EP1753909 B1 EP 1753909B1
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EP
European Patent Office
Prior art keywords
cleaning
suction
transport belt
medium
suction opening
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EP05740038A
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German (de)
English (en)
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EP1753909A1 (fr
Inventor
Hartmut Schneider
Karl-Heinz Straub
Denis Miklau
Guenther Prinz
Alexander Studentschnig
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Voith Patent GmbH
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Voith Patent GmbH
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Publication of EP1753909A1 publication Critical patent/EP1753909A1/fr
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Publication of EP1753909B1 publication Critical patent/EP1753909B1/fr
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/32—Washing wire-cloths or felts

Definitions

  • the invention relates to a method for cleaning a conveyor belt of a web-processing machine, in particular a machine for the production or further processing of paper, cardboard or tissue.
  • a plurality of conveyor belts are used to transport a fibrous web to be produced.
  • the conveyor belts are used here, for example, in the form of forming fabrics in the forming section, in the form of press felts in the press section and in the form of dryer fabrics in the dryer section or as transfer belts.
  • the screens and felts are at least partially designed as fabric tapes with open pore structure.
  • the conveyor belts are increasingly contaminated by, for example, in the fiber suspension containing contaminants such as adhesives or other additives.
  • contaminants such as adhesives or other additives.
  • the pores and meshes settle with the o.g. Substances too.
  • the cleaning nozzles are inclined to the transport path, wherein the direction of inclination of the nozzles changes continuously between inclination in the direction of travel of the transport path and inclination against the direction of the transport path due to the rotation of the nozzles. According to this document is thrown back from the conveyor belt cleaning medium led away via a suction channel, which is arranged parallel to the axis of rotation of the cleaning nozzles.
  • the US 6,254,730 B1 discloses a moving belt cleaning device having rotating nozzles that are adjustable in their angle of impact.
  • the cleaning of a papermaking belt is described.
  • For cleaning serves a pressurized water flow.
  • the beam angle is adjustable with respect to the belt or screen.
  • the preamble is a method for cleaning a preferably moving. Conveyor belt of a web-processing machine.
  • the method works with at least one cleaning nozzle through which the moving conveyor belt is subjected to a cleaning medium.
  • the at least one cleaning nozzle is arranged such that the cleaning medium is jet-shaped always inclined towards the direction of the conveyor belt and at an angle of incidence ⁇ of greater than 5 ° and less than 85 ° at a cleaning point on the conveyor belt.
  • the conveyor belt to be cleaned moves under the cleaning station. Characterized in that the cleaning medium is sprayed as a jet always inclined towards the direction of the conveyor belt and at an angle of incidence ⁇ between 5 ° and 85 ° on the conveyor belt, the relative speed between the conveyor belt to be cleaned and the cleaning medium is increased. Due to the speed increase, the momentum between the cleaning medium and contamination on the conveyor belt is increased, which significantly improves the cleaning performance.
  • the cleaning medium is braked after the impact on the surface of the conveyor belt.
  • One part of the cleaning medium typically 30% of the cleaning medium applied, passes through the conveyor belt (in the case of a porous structure), another part remains in the conveyor belt (5%) and another part is thrown back by the conveyor belt.
  • the reflected part is at oblique angle of incidence ⁇ between 5 ° and 85 ° for the most part (more than 50%) as a fanned beam, depending on the angle of incidence ⁇ , the structure of the conveyor belt, the machine speed and the pressure of the exiting cleaning medium at a mean angle ⁇ between 5 ° and 75 °, preferably between 15 ° ⁇ 10 ° reflected against the direction of the conveyor belt.
  • the reflected jet entrains air, cleaning medium mist and dissolved impurities, whereby a suction effect is achieved in the direction of the reflected beam.
  • the jet of the cleaning medium "scoops" or “scoops” off the dirt from the surface of the transport path to be cleaned, by undermining and lifting off the dirt particles due to the oblique impact.
  • angle of incidence ⁇ is preferably between 15 ° and 75 °, more preferably between 30 ° and 60 °.
  • the at least one cleaning nozzle is fixed, in particular not rotatable.
  • the execution of the cleaning device according to the invention is considerably simplified. This leads, on the one hand, to a simpler structure, as it is possible to dispense with a complicated movement mechanism, as a result of which the cleaning device can be manufactured more cost-effectively.
  • the maintenance and the susceptibility is thereby significantly reduced, especially since the area in which the cleaning nozzle is arranged has a very strong tendency to fouling.
  • the cleaning device usually for removing the thrown back from the conveyor belt and mixed with dirt cleaning medium to a suction channel with suction opening, in which at least partially directly enters the thrown back cleaning medium.
  • the suction opening extends at least partially in the direction of the cleaning point pointing to the side opposite in relation to the cleaning point of the cleaning nozzle is arranged, wherein the central axis of the suction channel in the region of the suction opening with the conveyor belt forms an angle ⁇ between 5 ° and 75 °.
  • the suction opening points in the direction of the reflected beam, ie the suction opening faces the reflected beam.
  • the Cleaning medium which is reflected by the cleaning point against the direction of the conveyor belt can also be easily sucked, as the suction extends at least partially in the half-space of the reflected cleaning medium and that facing. Since the average reflection angle ⁇ is usually in the range between 5 ° and 75 ° at the angles of incidence ⁇ given above, it is possible with the inventive arrangement of the suction opening to couple the reflected beam into the suction channel better than in the known embodiments in which the suction opening does not face the reflected beam.
  • the relative position between the suction opening and the at least one cleaning nozzle is fixed.
  • the angle ⁇ is preferably between 5 ° and 50 °, particularly preferably between 5 ° and 25 °.
  • a particularly preferred embodiment of the invention provides that the cross-sectional area of the suction opening and the distance of the suction opening to the cleaning point are matched to one another, that by the cross-sectional area of the suction opening a below the mean angle ⁇ reflected and in the opening angle range 0 of ⁇ 15 °, preferably of ⁇ 25 ° fanned beam of the cleaning medium can pass through the cross-sectional area of the suction opening.
  • the suction chamber extends to at least one cleaning nozzle or if the suction chamber surrounds the at least one cleaning nozzle.
  • the suction channel In order to guide the cleaning medium flowing in the suction channel as smoothly as possible in a laminar flow through the suction channel, it makes sense if the suction channel extends at least partially straight and / or curved with a radius of curvature between 10mm to 200mm.
  • the radius may change with the angle of the swept arc.
  • the suction channel may at least in sections have a constant cross-sectional area.
  • suction channel has a cross-sectional area of 100qmm to 10000qmm, preferably from 500qmm to 3000qmm, especially from 1000qmm to 2000qmm.
  • the suction channel and / or the suction opening can also be a round or have square cross section.
  • the conveyor belt can be reliably cleaned in its entire width, it makes sense if at least two of the cleaning nozzles are spaced differently from each other. In this case, it is also advantageous if the division of the scanning steps during the transverse traversing of the cleaning device is not equal to the pitch of the distances of the cleaning nozzles.
  • the cleaning nozzles are not arranged parallel to each other. In order to increase the cleaning performance, they may be oriented such that the emerging from the cleaning nozzles jets of cleaning medium are focused on the cleaning site.
  • cleaning nozzles with a diameter between 0.1mm and 0.5mm, preferably between 0.15mm and 0.3mm.
  • the cleaning medium at the outlet from the cleaning nozzle has a pressure between 20bar and 1000bar, preferably between 200bar and 500bar.
  • the cleaning medium has a liquid and / or gaseous component.
  • a cleaning medium water is often used with or without additives.
  • the temperature of the cleaning medium is adapted to the ambient temperature. Since, depending on the location, temperatures between 20 ° C and 120 ° C, often between 50 ° C and 100 ° C prevail, a preferred embodiment of the invention provides that the cleaning medium is a temperature between 20 ° C and 120 ° C, preferred between 50 ° C and 100 ° C.
  • a preferred development of the invention provides that in the direction of the reflected / flowing in the suction channel cleaning medium after the suction opening of the suction channel has a vacuum device.
  • the vacuum device has at least one injector nozzle for injection of an injection medium.
  • a negative pressure in the manner of a water jet vacuum is created by the suction effect of the air layers accelerated with the injection medium, so that dirt particles, mist and drops of cleaning medium are entrained in the direction of the outlet opening.
  • Another advantage of the injection of the injection medium is that the suction channel is permanently flushed, whereby dirt deposits in the suction channel can be reduced or prevented.
  • the cross-section of the suction channel in the area of the at least one injector nozzle has to widen in the direction of the cleaning medium flowing in the suction channel to avoid backflow.
  • the at least one injector nozzle is arranged such that the injection medium is at least partially injected parallel to the central axis of the discharge channel.
  • the injection medium which occurs from the injector, which is arranged in the direction of flow, at the outlet pressure between 20bar and 1000bar, preferably between 200bar and 500bar have and if the injector, which from the injector located downstream in the flow direction, at the outlet has a pressure between 20bar and 40bar.
  • At least one injector nozzle has a round or oval or rectangular cross section and whose diameter is in the range between 0.1 mm and 0.5 mm, preferably between 0.15 mm and 0.3 mm.
  • the injector nozzle lying behind this preferably has a 1 mm and 2 mm, preferably 1.5 mm.
  • the injector medium may have a liquid and / or gaseous component.
  • the injector medium is heated or cooled with respect to the ambient temperature.
  • the injector medium in this case has a temperature between 30 ° C and 100 ° C, preferably between 30 ° C and 70 ° C.
  • the injector medium in this case has a temperature between 4 ° C and 50 ° C, preferably between 8 ° C and 25 ° C.
  • At least one air knife is arranged in the running direction of the conveyor belt after the at least one cleaning nozzle, through which the conveyor belt can be acted upon with compressed air, which meets at an angle ⁇ between 10 ° and 80 °, preferably between 50 ° and 70 ° in the running direction on the conveyor belt , Remains of the cleaning medium, which are located on the surface or in the conveyor belt, can be blown off and / or atomized by the air knife. Furthermore, false air inlet into the area of the cleaning nozzles can be prevented.
  • the air knife at least partially forms a plurality of individual jets, which are arranged transversely to the running direction of the conveyor belt side by side and / or that the air knife at least partially forms a slot-like transverse to the direction of the conveyor belt extending air curtain.
  • the air knife performs its tasks particularly well when the compressed air has a pressure between 1 bar and 10 bar, preferably between 4bar and 7bar.
  • the compressed air is heated to a temperature between 20 ° C and 200 ° C, preferably between 50 ° C and 200 ° C. If the compressed air, which has been heated above ambient temperature, is blown onto / into the conveyor belt, an active drying of the conveyor belt takes place.
  • the FIG. 1 shows a cleaning device 1 according to the invention for cleaning a conveyor belt 2 of a web-processing machine.
  • the cleaning device 1 has a plurality of cleaning nozzles 3 arranged in a cleaning head 18, of which only one can be seen in the present illustration. Through the cleaning nozzles 3, the conveyor belt 2 can be acted upon by a cleaning medium 4 at a cleaning point 5.
  • the cleaning nozzles 3 are arranged such that the cleaning medium 4 as a jet 7 always against the running direction 6 of the conveyor belt 2 at an angle of incidence ⁇ between 5 ° and 85 ° at the cleaning station 5 hits the conveyor belt 2.
  • the incident beam 7 with the transport path 2 includes an angle of incidence ⁇ of 45 °.
  • angle of incidence ⁇ is preferably between 15 ° and 75 °, more preferably between 30 ° and 50 °.
  • the cleaning nozzles 3 are fixed with respect to the conveyor belt 2, in particular not rotatable.
  • the device 1 for cleaning the conveyor belt 2 has a suction channel 8 with a suction opening 9.
  • the suction channel 8 has a central axis 10.
  • Through the suction opening 9 enters with dirt mixed cleaning medium 4 in the suction channel 8, after this is reflected by the conveyor belt 2.
  • a large part of the thrown back from the conveyor belt cleaning medium 4 is reflected as a fanned beam 11 at an average angle ⁇ from the conveyor belt 2 against the running direction 6 of the conveyor belt 2.
  • the suction opening 9 extends on the side which is arranged opposite the cleaning nozzle 3 with respect to the cleaning point 5. According to the invention, the suction opening 9 in the direction of the cleaning point 5 and thus in the direction of the reflected beam 11.
  • the central axis 10 of the suction channel 8 in the region of the suction opening 9 according to the invention with the conveyor belt 2 forms an angle ⁇ between 5 ° and 75 °.
  • the conveyor belt 2 in the region of the cleaning point 5 cuts.
  • the cross-sectional area 27 of the suction opening 9 and the distance A between the cross-sectional area 27 and the cleaning point 5 are matched to one another such that the cross-sectional area 27 of the suction opening 9 reflects a value below the mean angle ⁇ and ⁇ ⁇ 25 ° in the opening angle range fanned beam of the cleaning medium through the cross-sectional area 27 of the suction opening 9 can occur.
  • a suction chamber 12 is formed.
  • the suction chamber 12 extends in the present embodiment in the direction of the cleaning nozzles 3 and surrounds them.
  • the suction chamber 12 has an opening 13 which extends horizontally to the conveyor belt 2 and to the conveyor belt 2 between 1mm and 10mm, preferably between 3mm and 5mm spaced.
  • the suction channel 8 extends in the flow direction of the reflected beam 11 first curved with a radius of curvature 100mm and then extends straight through which the suction channel 8 is replaced by the shape of a "shoe".
  • the suction channel 8 has, after the suction opening 9, a vacuum device in the form of one or more injector nozzles 16 for injection of an injection medium 17.
  • a portion 14 of the suction channel 8, which extends between the suction opening 9 and the injector nozzle 16, has a constant cross-sectional area.
  • the adjoining the section 14 section 15 of the suction channel 8 extends straight.
  • the cross section of the suction channel in the region 15 widens starting from the injector nozzle 16 in the direction of the cleaning medium 4 flowing in the suction channel 8.
  • the injector nozzle 16 is arranged such that the injection medium 17 is injected at least in sections parallel to the central axis 10 of the discharge channel 8 in the region 15.
  • the suction channel and / or the suction opening may in this case have a round or quadrangular cross-section.
  • the injection medium 17 has a pressure between 20 bar and 1000 bar, preferably between 200 bar and 500 bar, on exiting the injector nozzle.
  • the injector nozzle 16 may have both a round or oval or rectangular cross-section.
  • the injector nozzle 16 has a diameter between 0.1 mm and 0.5 mm, preferably between 0.15 mm and 0.3 mm.
  • the injector medium may have a liquid and / or gaseous component and is water in the present embodiment.
  • the injector 17 is cooled with respect to the ambient temperature and has a temperature of 8 ° C.
  • an air knife 19 is arranged, through which the conveyor belt 2 can be acted upon with compressed air 20, the angle ⁇ between 10 ° and 80 °, preferably between 50 ° and 70 ° in the direction 6 on the Conveyor belt 2 hits.
  • the air knife 19 may in this case at least partially formed by a plurality of individual jets, which are arranged transversely to the running direction 6 of the conveyor belt 2 side by side and / or at least partially formed by a slot-like transverse to the running direction 6 of the conveyor belt 2 extending air curtain.
  • the compressed air has a pressure of 5bar in the present embodiment.
  • the compressed air 20 is heated above ambient temperature to a temperature of 170 ° C.
  • FIG. 2a (Section line aa in FIG. 1 ) shows the cleaning head 18 in a front view with a view of the cleaning nozzles 3, 3 ', 3 "and 3"'.
  • the cleaning nozzles 3, 3 ', 3 "and 3''' arranged side by side, wherein the cleaning head 18 is oriented such that the cleaning nozzles 3, 3 ', 3" and 3 "'
  • all the cleaning nozzles 3, 3 ', 3 "and 3'” are spaced apart from one another in a different manner (D3 ⁇ D1 ⁇ D2).
  • the cleaning nozzles 3, 3 ', 3 "and 3''' in relation to each other with respect to the vertical 28 by the angle ⁇ 1, ⁇ 2, ⁇ 3 and ⁇ 4 inclined that from the cleaning nozzles 3, 3 ', 3" and 3 '' emanating rays 7,7 ', 7 "and 7"' are focused at the cleaning site (See FIG. 2b ; Section line bb in FIG. 1 ).
  • the cleaning nozzles 3, 3 ', 3 "and 3"' have a round cross section with a diameter of 0.2 mm.
  • the cleaning medium 4 exiting from the cleaning nozzles has a pressure of 350 bar on exiting the cleaning nozzles 3, 3 ', 3 "and 3''' Water is used as the cleaning medium 4. To prevent condensation of the cleaning medium, this is above room temperature to 100 ° C heated.
  • FIG. 3 shows a view of the cleaning device 1 in combination with a papermaking machine 25.
  • the cleaning device 1 is connected to a moving unit 21, which makes it possible to move the cleaning device transversely (CD) to the running direction 6 of the transport path 2.
  • a drain line 23 is arranged, through which the cleaning medium is further led away.
  • flow accelerators 22 in the form of injector nozzles 22 are arranged.
  • the injector nozzles 22 have a nozzle diameter between 1 mm and 2 mm, preferably 1.5 mm.
  • the pressure of the injector medium exiting the injector nozzles 22 is in the range of 20bar to 40bar.
  • the system has a plurality of injector nozzles 16 and 22 arranged one behind the other in the flow direction of the cleaning medium 4 to be removed.
  • the injector medium 26 injected by the injector nozzles 22 is subjected to a lower pressure than the injector medium 17.

Landscapes

  • Cleaning In General (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Glass Compositions (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (41)

  1. Procédé de nettoyage d'une courroie transporteuse mobile (2) d'une machine de traitement de bande, dans lequel on traite la courroie transporteuse (2) avec un agent de nettoyage (4) à l'aide d'une buse de nettoyage (3), dans lequel on projette l'agent de nettoyage (4) sous la forme d'un jet (7) sur la courroie transporteuse (2) en un point de nettoyage (5) sous un angle d'incidence α copris entre 5° et 85° toujours incliné dans la direction opposée à la direction de défilement (6) de la courroie transporteuse (2) et en ce que l'on dispose une ouverture d'aspiration (9) d'un canal d'aspiration (8) de telle manière que la fraction d'agent de nettoyage (11) déviée par la courroie transporteuse (2) sous un angle moyen γ = 15°±10° et étalée dans la plage d'angle d'ouverture θ de ±15° dans la direction opposée à la direction de défilement de la courroie transporteuse (2) traverse l'aire de la section transversale (27) de l'ouverture d'aspiration.
  2. Procédé selon la revendication 1, caractérisé en ce que l'agent de nettoyage (4) sort de la buse de nettoyage (3) sous une pression comprise entre 20 bars et 1000 bars.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'angle d'incidence α est compris de préférence entre 15° et 75°, et de préférence encore entre 30° et 60°.
  4. Procédé selon au moins une des revendications précédentes, caractérisé en ce que ladite au moins une buse de nettoyage (3) est utilisée sans rotation.
  5. Procédé selon au moins une des revendications précédentes, caractérisé en ce que l'agent de nettoyage (11) mélangé à des saletés pénètre dans un canal d'aspiration (8) avec une ouverture d'aspiration (27) après avoir été renvoyé par la courroie transporteuse (2), dans lequel l'ouverture d'aspiration (27) s'étend au moins en partie sur le côté qui est disposé à l'opposé de la buse de nettoyage (3) par rapport au point de nettoyage (5), dans lequel l'ouverture d'aspiration (9) est orientée en direction du point de nettoyage (5), et dans lequel l'axe central (10) du canal d'aspiration (8) forme un angle δ compris entre 5° et 75° avec la courroie transporteuse (2) dans la région de l'ouverture d'aspiration (9).
  6. Procédé selon la revendication 5, caractérisé en ce que l'angle δ est compris de préférence entre 10° et 50°, et de préférence encore entre 15° et 35°.
  7. Procédé selon au moins une des revendications précédentes, caractérisé en ce qu'une grande partie de l'agent de nettoyage (11) renvoyé par la courroie transporteuse (2) est déviée en étant étalée sous un angle moyen γ, dans lequel l'axe central (10) du canal d'aspiration (8) dans la région de l'ouverture d'aspiration (9) s'étend essentiellement dans le prolongement de l'angle moyen γ.
  8. Procédé selon au moins une des revendications précédentes, caractérisé en ce que l'axe central (10) du canal d'aspiration (8) forme avec l'angle moyen γ, dans la région de l'ouverture d'aspiration (9), l'angle Σ compris dans la plage ±25°, de préférence ±15°, et de préférence encore ±5°.
  9. Procédé selon au moins une des revendications précédentes, caractérisé en ce que l'agent de nettoyage (4) arrive sur la courroie transporteuse (2) en un point de nettoyage (5) et en ce que le prolongement de l'axe central (10) du canal d'aspiration (8) dans la région de l'ouverture d'aspiration (9) coupe la courroie transporteuse (2) dans la région du point de nettoyage (5).
  10. Procédé selon au moins une des revendications précédentes, caractérisé en ce que l'aire de la section transversale (27) de l'ouverture d'aspiration (9) et une distance (A) entre l'ouverture d'aspiration (9) et le point de nettoyage (5) sont accordées l'une à l'autre de telle manière que, à travers l'aire de la section transversale (27) de l'ouverture d'aspiration (9), un jet (11) de l'agent de nettoyage (4) dévié sous un angle moyen γ et étalé dans une plage d'angle d'ouverture θ de ±15°, de préférence de ±25°, puisse passer à travers l'aire de la section transversale (27) de l'ouverture d'aspiration (9).
  11. Procédé selon au moins une des revendications précédentes, caractérisé en ce qu'une chambre d'aspiration (12) est formée après l'ouverture d'aspiration (9) dans la direction de défilement (6) de la courroie transporteuse (2), s'étend au moins par zones en direction de ladite au moins une buse de nettoyage (3) et présente une ouverture (13) qui s'étend horizontalement vis-à-vis de la courroie transporteuse (2).
  12. Procédé selon la revendication 11, caractérisé en ce que l'ouverture (13) est espacée de la courroie transporteuse (2) d'une distance comprise entre 1 mm et 10 mm, de préférence entre 3 mm et 5 mm.
  13. Procédé selon au moins une des revendications précédentes 11 et 12, caractérisé en ce que la chambre d'aspiration (12) s'étend jusqu'à ladite au moins une buse de nettoyage (3).
  14. Procédé selon au moins une des revendications précédentes 11 à 13, caractérisé en ce que ladite au moins une buse de nettoyage (3) est enveloppée par la chambre d'aspiration (12).
  15. Procédé selon au moins une des revendications précédentes, caractérisé en ce que le canal d'aspiration (8) s'étend au moins par zones de façon rectiligne et/ou courbée avec un rayon de courbure compris entre 10 mm et 200 mm.
  16. Procédé selon au moins une des revendications précédentes, caractérisé en ce que le canal d'aspiration (8) présente au moins par zones une aire de section transversale constante.
  17. Procédé selon au moins une des revendications précédentes, caractérisé en ce que le canal d'aspiration (8) présente une aire de section transversale de 100 mm2 à 10000 mm2, de préférence de 500 mm2 à 3000 mm2, en particulier de 1000 mm2 à 2000 mm2.
  18. Procédé selon au moins une des revendications précédentes, caractérisé en ce que le canal d'aspiration (8) et/ou l'ouverture d'aspiration (9) a une section transversale ronde ou carrée.
  19. Procédé selon au moins une des revendications précédentes, caractérisé en ce que l'on utilise plusieurs buses de nettoyage (3) disposées les unes à côté des autres transversalement à la direction de défilement (6) de la courroie transporteuse (2).
  20. Procédé selon au moins une des revendications précédentes, caractérisé en ce qu'au moins deux des buses de nettoyage (3) sont différemment espacées l'une de l'autre.
  21. Procédé selon au moins une des revendications précédentes, caractérisé en ce qu'au moins deux des buses de nettoyage (3) ne sont pas disposées parallèlement l'une à l'autre.
  22. Procédé selon au moins une des revendications précédentes, caractérisé en ce que l'on choisit une section transversale ronde pour au moins une buse de nettoyage (3).
  23. Procédé selon au moins une des revendications précédentes, caractérisé en ce que les buses de nettoyage (3) présentent un diamètre compris entre 0,1 mm et 0,5 mm, de préférence entre 0,15 mm et 0,3 mm.
  24. Procédé selon au moins une des revendications précédentes, caractérisé en ce que l'agent de nettoyage (4) présente une pression comprise entre 200 bars et 500 bars à la sortie de la buse de nettoyage (3).
  25. Procédé selon au moins une des revendications précédentes, caractérisé en ce que l'agent de nettoyage (4) comprend un composant liquide et/ou gazeux.
  26. Procédé selon au moins une des revendications précédentes, caractérisé en ce que l'agent de nettoyage (4) présente une température de plus de 20°C à 120°C, de préférence comprise entre 50°C et 100°C.
  27. Procédé selon au moins une des revendications précédentes, caractérisé en ce que le canal d'aspiration (8) présente un dispositif de dépression après l'ouverture d'aspiration (9) en direction de l'agent de nettoyage dévié circulant dans le canal d'aspiration (8).
  28. Procédé selon la revendication 27, caractérisé en ce que le dispositif de dépression comporte au moins un injecteur (16) pour injecter un agent d'injection (17).
  29. Procédé selon la revendication 28, caractérisé en ce que la section transversale du canal d'aspiration (8) s'élargit dans la direction de l'agent de nettoyage circulant dans le canal d'aspiration (8) en commençant dans la région dudit au moins un injecteur (16).
  30. Procédé selon au moins une des revendications précédentes 28 et 29, caractérisé en ce que plusieurs injecteurs (16) sont disposés l'un derrière l'autre dans la direction de l'agent de nettoyage circulant dans le canal d'aspiration (8) et en ce que l'agent d'injection (17), qui sort du/des injecteur(s) (16) disposé(s) en avant dans la direction d'écoulement, est soumis à une pression plus élevée que l'agent d'injection sortant du/des injecteur(s) (16) disposé(s) derrière ceux-ci.
  31. Procédé selon au moins une des revendications précédentes 28 et 29, caractérisé en ce que ledit au moins un injecteur (16) est disposé de telle manière que l'agent d'injection (17) soit injecté, au moins par zones, parallèlement à l'axe central du canal d'évacuation, c'est-à-dire du canal d'aspiration (8).
  32. Procédé selon au moins une des revendications précédentes 28 à 31, caractérisé en ce que l'agent d'injection (17) présente une pression comprise entre 20 bars et 1000 bars, de préférence entre 200 bars et 500 bars, à la sortie dudit au moins un injecteur (16).
  33. Procédé selon au moins une des revendications précédentes 28 à 32, caractérisé en ce que ledit au moins un injecteur (16) présente une section transversale ronde ou ovale ou rectangulaire.
  34. Procédé selon au moins une des revendications précédentes 28 à 33, caractérisé en ce que ledit au moins un injecteur (16) présente un diamètre compris entre 0,1 mm et 0,5 mm, de préférence entre 0,15 mm et 0,3 mm.
  35. Procédé selon au moins une des revendications précédentes 28 à 34, caractérisé en ce que l'agent d'injection (17) comprend un composant liquide et/ou gazeux.
  36. Procédé selon au moins une des revendications précédentes 28 à 35, caractérisé en ce que l'agent d'injection (17) est réchauffé ou refroidi par rapport à la température ambiante.
  37. Procédé selon au moins une des revendications précédentes 28 à 36, caractérisé en ce que l'agent d'injection (17) présente une température comprise entre 30°C et 100°C, de préférence entre 30°C et 70°C ou entre 4°C et 50°C, de préférence entre 8°C et 25°C.
  38. Procédé selon au moins une des revendications précédentes, caractérisé en ce qu'au moins une lame d'air (19) est disposée après ladite au moins buse de nettoyage (3) dans la direction de défilement (6) de la courroie transporteuse (2), par laquelle la courroie transporteuse (2) est traitée avec de l'air comprimé (20), qui frappe la courroie transporteuse (2) sous un angle β compris entre 10° et 80°, de préférence entre 50° et 70° dans la direction de défilement.
  39. Procédé selon la revendication 38, caractérisé en ce que la lame d'air (19) forme au moins par zones plusieurs jets individuels, qui sont disposés les uns à côté des autres transversalement à la direction de défilement (6) de la courroie transporteuse (2) et/ou en ce que la lame d'air (19) forme au moins par zones un rideau d'air en forme de fente s'étendant transversalement à la direction de défilement (6) de la courroie transporteuse (2).
  40. Procédé selon la revendication 38 ou 39,
    caractérisé en ce que l'air comprimé (20) présente une pression comprise entre 1 bar et 10 bars, de préférence entre 4 bars et 7 bars.
  41. Procédé selon l'une quelconque des revendications 38 à 40, caractérisé en ce que l'air comprimé est réchauffé à une température comprise entre 20°C et 200°C, de préférence entre 50°C et 200°C.
EP05740038A 2004-05-19 2005-04-28 Procede de nettoyage Active EP1753909B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004025291A DE102004025291A1 (de) 2004-05-19 2004-05-19 Reinigungsvorrichtung
PCT/EP2005/051927 WO2005113890A1 (fr) 2004-05-19 2005-04-28 Dispositif de nettoyage

Publications (2)

Publication Number Publication Date
EP1753909A1 EP1753909A1 (fr) 2007-02-21
EP1753909B1 true EP1753909B1 (fr) 2009-10-28

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EP05740038A Active EP1753909B1 (fr) 2004-05-19 2005-04-28 Procede de nettoyage

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EP (1) EP1753909B1 (fr)
AT (1) ATE447070T1 (fr)
DE (2) DE102004025291A1 (fr)
WO (1) WO2005113890A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8808504B2 (en) 2009-12-21 2014-08-19 Paprima Industries Inc. Cleaning apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010026831B4 (de) 2010-07-12 2021-08-12 Paprima Industries Inc. Abflussvorrichtung für und Verfahren zum Abtransport von Schmutzpartikeln und Abwasser aus einem Reinigungskopf
DE102015206747A1 (de) * 2015-04-15 2016-10-20 Voith Patent Gmbh Reinigungsvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB160861A (en) * 1919-09-13 1921-04-07 Charles Walmsley And Company L Improvements in and relating to paper making machinery
ATE209271T1 (de) * 1995-02-24 2001-12-15 Voith Paper Patent Gmbh Reinigungsvorrichtung
US6254730B1 (en) * 1999-02-09 2001-07-03 James Ross Limited Impact angle changing shower
US6468397B1 (en) * 1999-12-20 2002-10-22 Kimberly-Clark Worldwide, Inc. Scarfing shower for fabric cleaning in a wet papermaking process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8808504B2 (en) 2009-12-21 2014-08-19 Paprima Industries Inc. Cleaning apparatus
US9222221B2 (en) 2009-12-21 2015-12-29 Paprima Industries Inc. Cleaning apparatus

Also Published As

Publication number Publication date
ATE447070T1 (de) 2009-11-15
EP1753909A1 (fr) 2007-02-21
WO2005113890A1 (fr) 2005-12-01
DE502005008413D1 (de) 2009-12-10
DE102004025291A1 (de) 2005-12-08

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