EP1884588A2 - Dispositif de nettoyage - Google Patents

Dispositif de nettoyage Download PDF

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Publication number
EP1884588A2
EP1884588A2 EP20070108307 EP07108307A EP1884588A2 EP 1884588 A2 EP1884588 A2 EP 1884588A2 EP 20070108307 EP20070108307 EP 20070108307 EP 07108307 A EP07108307 A EP 07108307A EP 1884588 A2 EP1884588 A2 EP 1884588A2
Authority
EP
European Patent Office
Prior art keywords
cleaning
conveyor belt
nozzle
cleaning nozzle
cleaning head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20070108307
Other languages
German (de)
English (en)
Other versions
EP1884588A3 (fr
Inventor
Maria Dröscher
Denis Miklau
Wolfgang Schneider
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.)
Voith Patent GmbH
Original Assignee
Voith Patent 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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1884588A2 publication Critical patent/EP1884588A2/fr
Publication of EP1884588A3 publication Critical patent/EP1884588A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D21F1/325—Washing wire-cloths or felts with reciprocating devices
    • 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 device for cleaning an endlessly circulating conveyor belt in a machine for producing and / or finishing a paper, board, tissue or another fibrous web, with at least one cleaning nozzle through which the conveyor belt can be acted upon with a cleaning medium, wherein the at least one cleaning nozzle is arranged inclined so that the cleaning medium acts as a jet at an angle of incidence against the running direction of the conveyor belt.
  • the invention also relates to a method for cleaning an endlessly circulating conveyor belt.
  • Such a device is known from WO 2005/113890 already known.
  • the cleaning nozzles provided or intended for cleaning the conveyor belt are designed to be stationary, the effect of the cleaning jets emitted by the cleaning nozzle (s) running counter to the running direction of the conveyor belt and inclination angles being used in a larger area.
  • At least one further cleaning nozzle for dispensing Cleaning medium provided in the form of a jet.
  • This at least one further cleaning nozzle is also arranged inclined so that their dispensed cleaning jet impinges on this at an angle of incidence, but now additionally in the direction of the conveyor belt.
  • the device according to the invention further provides that the at least one further cleaning nozzle, seen in the direction of travel of the conveyor belt, is arranged in front of the first or already existing cleaning nozzle.
  • the at least one further cleaning nozzle in the running direction of the conveyor belt, after the first or existing cleaning nozzle.
  • the at least one further cleaning nozzle and the first or existing cleaning nozzle are seen over the width of the conveyor belt to be cleaned, arranged offset to one another. As a result, they can not affect each other in their effect. The cleaning effect is even improved overall. in principle Of course, it is also possible to arrange them in other orders.
  • the at least one further cleaning nozzle and the first or already existing cleaning nozzle can be operated in mutually different angles of incidence and can be operated separately from one another. This gives you the ability to individually and specifically affect certain, for example, heavily soiled areas of the conveyor belt.
  • An advantageous solution of the invention is also that a common suction channel for both nozzle groups is present.
  • the suction channel has a suction opening directed towards the conveyor belt to be cleaned. This suction port sucks in both directions (in and against the direction of travel) the dirt released from the conveyor belt (including those from the shaded sides) on the surface and mixed with the cleaning medium, after the impingement by the at least one further cleaning nozzle and through the first or already existing cleaning nozzle is done.
  • a particularly expedient and above all compact arrangement of the device according to the invention results when the suction channel is arranged centrically or with offset or obliquely between the at least one further cleaning nozzle and the first or already existing cleaning nozzle (i.e., between both nozzle groups).
  • the suction channel contains in its interior an arranged vacuum device, preferably injector nozzles.
  • injector nozzles which act in the manner of a known Wasserstrahlinjektors arranged symmetrically.
  • Conventional vacuum generator can be used as an external vacuum source.
  • lateral false air scores are provided. This can prevent the suction of the conveyor belt.
  • a further advantageous embodiment of the device according to the invention is that the suction channel at its end facing the moving conveyor belt has at least one wear-resistant, non-abrasive contact surface.
  • This contact surface may for example consist of convex shaped ceramic moldings or additionally or alternatively in the form of a centrally arranged and in cross-section approximately triangular shaped part, for example made of ceramic. In the case of the latter, an additional flow guidance of the cleaning beams impinging on and reflected on the conveyor belt, which entrain removed dirt particles, is achieved.
  • the contact surfaces also allow the running conveyor belt to not be sucked by the cleaning device.
  • the conveyor belt is protected from damage when touched.
  • the cleaning device is traversable above the conveyor belt to be cleaned and across its width. It is possible that the traversal takes place continuously. As a result, the entire width of the conveyor belt can be cleaned in a train or in a crossing.
  • the cleaning device can also be moved stepwise, for example with pauses, if you want to wait for a certain number of revolutions of the conveyor belt.
  • the present invention also relates to a method for cleaning an endlessly circulating conveyor belt in a machine for producing and / or refining a paper, board, tissue or another fibrous web, wherein a cleaning head comprising at least one cleaning nozzle or a nozzle group comprises a cleaning medium is applied to the conveyor belt against the direction of the conveyor belt.
  • a cleaning head comprising at least one cleaning nozzle or a nozzle group comprises a cleaning medium is applied to the conveyor belt against the direction of the conveyor belt.
  • the invention provides that even in the running direction of the conveyor belt with a second cleaning head comprising at least one further cleaning nozzle or a further nozzle group, a cleaning medium is applied to the conveyor belt and then applied by both cleaning heads or nozzle groups and thrown back from the conveyor belt or reflected , soaked with dirt cleaning medium is aspirated together.
  • the inventive method works faster and more effective than before.
  • FIG. 1 shows a cleaning device 1 according to the invention for cleaning a conveyor belt 2.
  • Such an endless conveyor belt runs in a machine not shown for the production and / or finishing (eg coating with a coating medium) of a paper, board, tissue or other fibrous web around.
  • the conveyor belt 2 is used for transport, guidance and support of the forming or already formed running fibrous web.
  • the cleaning device 1 preferably has a plurality of cleaning nozzles 4 arranged in a cleaning head 3 and is therefore intended to form a first nozzle group I. In the sectional view of Figure 1, however, only a single nozzle is visible.
  • the transport belt running in the direction L can be acted upon by a cleaning medium 5.
  • the cleaning nozzle 4 or nozzle group I with a plurality of juxtaposed nozzles 4 is / are arranged such that the cleaning medium 5 as beam 6 always directed against the running direction L of the conveyor belt 2, impinges.
  • an angle of incidence ⁇ an angle of 5 ° to 85 ° which can be set to an imaginary vertical has proved to be effective in terms of the cleaning effect in experiments.
  • a range between 15 ° and 75 ° is preferred.
  • the cleaning nozzle / or nozzles 4 is / are fixed with respect to the conveyor belt 2 and not rotatable.
  • the cleaning nozzle 4 may be formed, for example, as a multi-jet nozzle (so-called MSD). There are point jet nozzles at a short distance on a nozzle carrier. The emitted rays are parallel. These parallel rays assist in their cleaning action and in the reflection behavior. The parallel rays have less interaction with the environment and thus have a longer range.
  • MSD multi-jet nozzle
  • the cleaning head 3 can only partially, ie one-sided cleaning effect on the surface 7, as shown in Figure 2 (prior art) can be achieved. At points not reached by the jet 6 of the cleaning medium 5 (so-called dark sides S or dead spaces) of the sieve structure, dirt particles remain.
  • the cleaning head 3 according to this prior art therefore does not achieve its desired effect.
  • a second cleaning head 8 is provided according to the invention.
  • this second cleaning head 8 as well as the first head 3, preferably a plurality of cleaning nozzles 9 are arranged and should represent a second nozzle group II in this case.
  • a single cleaning nozzle 9 can be seen, from each of which a cleaning medium 5, as a jet 6 is discharged.
  • the transport belt running in the direction L can be acted upon by the same cleaning medium 5 as used for the cleaning nozzle 4. It is also conceivable to use a medium different from the cleaning medium 5.
  • the cleaning nozzle 9 or nozzle group II is arranged such that the cleaning medium 5 also impinges as jet 4 as in jet 4, but always in the running direction L of the conveyor belt 2. This avoids dirt residues in the shadow area S of the surface structure of the conveyor belt, so that the entire surface 7 of the conveyor belt, even with complicated built-up surface 7 is completely cleaned.
  • an adjustable angle of 5 ° to 85 ° has also proved to be effective in terms of the cleaning effect in experiments. Again, a range between 15 ° and 75 ° is preferred.
  • suction channel 10 is present between two cleaning heads 3 and 8 or nozzle groups I and II a common, in the example centrally arranged.
  • This suction channel 10 could also be arranged with offset between them. It has a suction opening 11 directed to the conveyor belt 2 to be cleaned. In this suction opening 11, the dirt particles released from the conveyor belt and reflected or reflected by the conveyor belt are mixed together with the cleaning medium, as shown in FIG. 1 with dashed lines and designated 5a , The sucking takes place after the application has taken place by the at least one cleaning nozzle 4 of the first cleaning head 3 and by the at least one cleaning nozzle 9 of the second cleaning head 8.
  • the suction channel 10 also preferably contains symmetrically arranged injector nozzles or driving nozzles 12 and 12 'for the suction of the dirty cleaning medium 5a or for the removal of dirt in the direction of arrow A, wherein the jet angle of the driving nozzles is variably adjustable.
  • the suction channel 10 may be in addition to an external vacuum source 13 to support the said suction A of the stained cleaning medium 5a in conjunction.
  • This additional vacuum source may be a conventional vacuum generator, which should only be indicated in FIG. 1 by a dotted line.
  • the suction channel 10 is provided at its the conveyor belt 2 facing the end with at least one wear-resistant, non-abrasive contact surface 15.
  • a contact surface 15 for example, ceramic moldings 16 use. These also prevent by their form the suction of the conveyor belt. In addition, they can take on a flow function. This is the case if, as hatched in Figure 1, a molding 16 is arranged alternately or in addition to the contact surfaces 15 at the lower part of the suction pipe.
  • the cleaning device 1 is designed so that it can be traversed above the width to be cleaned conveyor belt 2 across its width.
  • the traversing can be carried out continuously or stepwise.

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  • Cleaning In General (AREA)
  • Paper (AREA)
EP20070108307 2006-07-14 2007-05-16 Dispositif de nettoyage Withdrawn EP1884588A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610033084 DE102006033084A1 (de) 2006-07-14 2006-07-14 Reinigungsvorrichtung

Publications (2)

Publication Number Publication Date
EP1884588A2 true EP1884588A2 (fr) 2008-02-06
EP1884588A3 EP1884588A3 (fr) 2013-08-07

Family

ID=38820255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070108307 Withdrawn EP1884588A3 (fr) 2006-07-14 2007-05-16 Dispositif de nettoyage

Country Status (2)

Country Link
EP (1) EP1884588A3 (fr)
DE (1) DE102006033084A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015091432A1 (fr) * 2013-12-20 2015-06-25 Voith Patent Gmbh Dispositif de nettoyage d'une toile d'une machine à papier
US20210254270A1 (en) * 2020-02-13 2021-08-19 Kadant Nordic AB Cleaning head with directional nozzle assembly and shaped external air knife for traversing shower systems

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015206747A1 (de) * 2015-04-15 2016-10-20 Voith Patent Gmbh Reinigungsvorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0731212A1 (fr) * 1995-02-24 1996-09-11 Voith Sulzer Papiermaschinen GmbH Dispositif de nettoyage
DE20318294U1 (de) * 2002-11-19 2004-03-11 Robo Paper Engineering B.V. Vorrichtung um Reinigen einer Materialbahn

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0731212A1 (fr) * 1995-02-24 1996-09-11 Voith Sulzer Papiermaschinen GmbH Dispositif de nettoyage
DE20318294U1 (de) * 2002-11-19 2004-03-11 Robo Paper Engineering B.V. Vorrichtung um Reinigen einer Materialbahn

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015091432A1 (fr) * 2013-12-20 2015-06-25 Voith Patent Gmbh Dispositif de nettoyage d'une toile d'une machine à papier
US20210254270A1 (en) * 2020-02-13 2021-08-19 Kadant Nordic AB Cleaning head with directional nozzle assembly and shaped external air knife for traversing shower systems

Also Published As

Publication number Publication date
DE102006033084A1 (de) 2008-01-24
EP1884588A3 (fr) 2013-08-07

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