EP0918579A1 - Dispositif servant a enlever un liquide de la surface d'une bande - Google Patents

Dispositif servant a enlever un liquide de la surface d'une bande

Info

Publication number
EP0918579A1
EP0918579A1 EP96923900A EP96923900A EP0918579A1 EP 0918579 A1 EP0918579 A1 EP 0918579A1 EP 96923900 A EP96923900 A EP 96923900A EP 96923900 A EP96923900 A EP 96923900A EP 0918579 A1 EP0918579 A1 EP 0918579A1
Authority
EP
European Patent Office
Prior art keywords
gas jet
gzl
gzr
band
outlet 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.)
Granted
Application number
EP96923900A
Other languages
German (de)
English (en)
Other versions
EP0918579B1 (fr
Inventor
Bernd Berger
Manfred Benfer
Heiko Peche
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.)
Sundwig GmbH
Original Assignee
Sundwig 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 Sundwig GmbH filed Critical Sundwig GmbH
Publication of EP0918579A1 publication Critical patent/EP0918579A1/fr
Application granted granted Critical
Publication of EP0918579B1 publication Critical patent/EP0918579B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/24—Arrangements of devices using drying processes not involving heating
    • F26B13/28—Arrangements of devices using drying processes not involving heating for applying pressure; for brushing; for wiping
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0278—Cleaning devices removing liquids

Definitions

  • the invention relates to a device for removing liquid from the surface of a strip conveyed from a strip processing machine, in particular a roll stand, by means of a gas jet with an outlet nozzle from which the gas jet emerges and a suction opening through which the gas jet mixed with the liquid is extractable.
  • lubricant residues in particular, from fast-running metallic rolled strips.
  • These residues of lubricant remain after the rolling process as residues of the lubricant on the strip that is applied to the strip during rolling. If the lubricant liquid is not removed to a sufficient extent, the lubricant residues form a lubricating film between the individual windings after the strip has been wound up into a band bundle. This lubricating film can cause the individual turns of the coil to telescope, that is to say they shift in the direction of the reel axis when reeling.
  • very low amounts of lubricant residues based on the surface of the rolled strip are usually prescribed for the further processing of the strips.
  • German Offenlegungsschrift DE 42 15 602 AI An improved device for removing liquids from the surface of a belt is described in German Offenlegungsschrift DE 42 15 602 AI.
  • the gas jet is blown onto the slit jet nozzle, which is also arranged transversely to the direction of tape travel, at a certain angle of inclination against the conveying direction of the tape, the ratio between the width of the slit jet nozzle and its distance from the tape being selected such that the gas jet with a hits the belt at high speed.
  • a suction gap is arranged at a certain distance in the conveying direction of the belt in front of the slot jet nozzle in the known device, through which the gas stream and the liquid mixed with it are sucked off the belt.
  • the object of the invention is to improve a device of the type mentioned in such a way that with such a device sufficient cleaning of the surface of the belt can be achieved over its entire width.
  • the gas jet for cleaning the belt surface is no longer blown onto the belt in a flow directed essentially against the conveying direction of the belt, as is still the case with the devices according to the state of the art, but instead a side flow is additionally generated which leads to one of the side edges or towards both side edges of the band.
  • the suction opening is arranged on the side of the belt so that the gas / liquid mixture is discharged directly next to the belt. In this way it is possible to conduct a large volume flow of gas at high flow speed over the belt. The mass impulse of this large volume flow is sufficient to remove larger quantities of liquid from the surface of the belt to be cleaned and in particular from its edge areas.
  • the device according to the invention is equipped with at least two paired outlet nozzles, which are arranged opposite each other in the conveying direction of the belt .
  • the outlet nozzles With such an arrangement of the outlet nozzles, it can be achieved that the individual gas jets emerging from the nozzles unite to form a volume flow which can transmit a particularly high mass impulse or a particularly high kinetic energy. This creates turbulence in the area in which the gas jets mix. These turbulences promote the atomization of the liquid adhering to the belt surface.
  • This mixing of the gas jets emerging from at least two outlet nozzles can also be favored in that at least a partial stream of the gas jet emerging from the outlet nozzles is directed against the gas jet that emerges from the respectively opposite outlet nozzle.
  • the device according to the invention is equipped with a large number of outlet nozzles arranged in rows along the width of the belt.
  • the gas volume flow increases due to the fact that an additional partial flow is added to it from each of the outlet nozzles, towards the side edge of the belt.
  • the arrangement of the outlet nozzles can be chosen so that the increase in the volume flow over the width of the belt is optimally adapted to the conditions given by the accumulation of the liquid.
  • outlet nozzles next to one another in rows are arranged in such a way that the gas jet emerging from them is blown onto the belt directly in the direction of the lateral edge, while a certain number of the remaining nozzles, for example, in or is aligned against the conveying direction of the belt.
  • the gas jet flows then colliding in different directions have the effect that the gas jets unite with increased turbulence to form a concentrated flow with high kinetic energy. It is also possible to combine rows of nozzles with different orientations to achieve a favorable flow development.
  • the outlet nozzle can also be designed as a flat jet nozzle. If such a flat jet nozzle is used, the volume flow increases, for example, starting with the center of the band, linearly to the side edge of the band.
  • the gas jet emerging from the flat jet nozzle can be directed against the belt in such a way that when two flat jet nozzles arranged opposite one another are used, the gas jets emerging from them combine to form a volume flow of likewise high kinetic energy.
  • At least one guide device for deflecting the gas jet in the desired direction can be arranged in the region of the outlet nozzles.
  • the formation of a concentrated volume flow and the optimal atomization of the liquid adhering to the belt surface with the gas flow can be promoted.
  • the gas jet can also be fed directly into the outflow channel formed between the outlet nozzles. This can be achieved, for example, by arranging between the outlet nozzles at least one further outlet opening, in particular positioned centrally between the lateral edges of the belt, via which a gas jet directed essentially transversely to the conveying direction of the belt hits the belt surface.
  • the versatility of the device according to the invention can also be increased in that the outlet nozzles are formed in a nozzle body which is detachably held in a recess of a housing element, and that in the recess, as an alternative to the nozzle body, the latter is movable substantially vertically to the surface of the band ,
  • a wiper seal carrying seal carrier can be used, to which the pressure of the gas jet can be applied.
  • Fig. 1 shows a device for removing
  • FIG. 2 shows the device according to FIG. 1 in a cross-sectional partial view
  • FIG. 3 shows the device according to FIGS. 1 or 2 in a horizontally sectioned partial view
  • FIG. 4a shows an enlarged detail A from FIG. 3;
  • FIG. 4b shows an alternative embodiment of the devices shown in FIGS. 1 to 4a in a section corresponding to section A in FIG. 3;
  • FIGS. 1 to 4b further alternative designs of the devices shown in FIGS. 1 to 4b, each in a view corresponding to section A in FIG. 3;
  • FIG. 6 shows a further alternative embodiment of the devices shown in FIG. 1 in a view corresponding to FIG. 1, but enlarged relative to this.
  • the device according to the invention for removing liquid from the upper and lower surface 0 ', 0''of a strip B conveyed from a roll stand (not shown) has a housing 1, the housing halves la, lb of which are mirror-symmetrical in relation to the strip B, the upper housing half la of the upper band surface O 'and the lower housing half lb of the lower band surface O''is assigned.
  • the housing halves la, lb protrude laterally beyond the edges R of the band B. They each have a first outlet nozzle 2, each of which is assigned to a squeezing roller 3 arranged above or below the belt B and arranged upstream of the housing halves 1a, 1b in the conveying direction F of the belt.
  • a second outlet nozzle 4 is formed in each case in the housing halves la, b.
  • a third outlet nozzle 5 is arranged in the edge region of the housing halves 1a, 1b facing away from the squeezing rollers 3.
  • the outlet nozzles 2, 4, 5 are each designed as flat jet nozzles that extend over the width of the respective housing half 1 a, 1 b.
  • the flat jet nozzle 2 is directed against the pinch rollers 3 in such a way that liquid adhering to the belt surfaces 0 ′, 0 ′′ is blown into the squeezing gap 6 by the gas jet Gl, for example an air jet, emerging from the outlet nozzles 2.
  • the gas jet Gl for example an air jet
  • the gas jet Gl acts outside of respective edge areas directed in the direction of the squeezing gap 6 as a barrier jet for the liquid on the belt surfaces 0 ', 0''.
  • the second flat jet nozzle 4 is directed in the conveying direction F of the belt B, while the third flat jet nozzle 5 is aligned counter to the conveying direction F.
  • a channel 7 is formed in the space between the flat jet nozzles 4, 5 in the surface of the housing half 1 a, 1 b assigned to the respective strip surface 0 ′, 0 ′′.
  • This channel 7 extends transversely to the conveying direction F of the belt B over the width of the respective housing halves la, lb. It is constructed symmetrically with respect to the center M of the band B and has a height h and width b increasing in the region of the band center M in the direction of the respective edge R of the band B in order to discharge the gas volume flow which is increasingly greater towards the edges R of the band B. .
  • rows of appropriately aligned round jet nozzles can also be used.
  • a suction opening 8a of a suction channel 8 which is connected to a suction device, not shown.
  • an outlet nozzle 9 is formed in the housing halves 1 a, 1 b.
  • the additional outlet nozzle 9 has an approximately groove-shaped outlet funnel-shaped outlet opening 9a, the long axis of which extends transversely to the conveying direction F of the belt B.
  • the gas jet Gz which emerges under pressure from the outlet nozzle 9, flows into two Partial streams Gzl and Gzr directly to the left and right edge R of band B.
  • the outlet nozzles 2, 4, 5, 9 are connected via connecting channels 10 to a central gas supply device, not shown, via which the gas stream G is fed into the connecting channels 10 under pressure.
  • Guide devices 11 are arranged in the region of the outlet openings of the outlet nozzles 2, 4, 5 and ensure that the gas jet G4, G5 flowing out of the respective outlet nozzle 4, 5 at an acute angle against the respective edge R of the band B and at the same time against the one from the each opposite outlet nozzle 5,4 emerging gas jet G5, G4 is directed.
  • the respective gas jet G4, G5 is oriented such that it becomes effective at a different point on the strip B than the other gas jet G5, G4. In this way it is achieved that the gas jets G4, G5 mix with each other with strong swirling and atomizing of the liquid accumulated on the belt B and together form a side flow S in the direction of the respective edge R of the belt B, of which those on the belt B accumulated liquid is taken away.
  • the formation of the side flow S is favored by the gas flow Gzl or Gzr, which are aligned directly with the respective lateral edges R.
  • the removal of the larger liquid accumulations in the region of the respective edges R of the band B is additionally supported by the fact that the amount of the flowing gas increases in the direction of the edge R.
  • FIG. 4b differs from the one explained above in that instead of outlet nozzles 4, 5, each as Flat jet nozzles are formed, a plurality of slot nozzles 12 are used, which are aligned at an angle in the direction of the respective edge R and are arranged in a row next to one another symmetrically to the center M of the band B.
  • the width of the outlet openings of the slot nozzles 12 is relatively small.
  • This alignment of the slot nozzles 12 ensures that the gas jet G12 emerging from them meets the gas jets G12 emerging from the respectively opposite slot nozzles and combines with them to form a lateral flow S2 with swirling and entrainment of the liquid adhering to the belt.
  • the formation of this side flow S2 is also supported by the gas jets Gzl and Gzr, which emerge from the centrally arranged, additional outlet nozzle 9.
  • a gas jet G13 flows from a first slot jet nozzle 13 which extends at least across the width of the belt B in a flow directed in the conveying direction F of the belt B to the belt B.
  • a gas jet G14 directed against the conveying direction F flows from a slotted jet nozzle 14 which is spaced apart in the conveying direction F from the slot jet nozzle 13.
  • jet nozzles 15, 16 are arranged, from each of which a gas jet G15, G16 which is aligned directly with the respective edge R emerges.
  • the gas jets G15, G16 mix due to the different mass pulses of the individual flows with vortex formation with the gas jets G13, G14 emerging from the slot nozzles 13, 14 to form a side flow S2 directed against the respective edge R.
  • FIG. 5b there is one instead of the slot jet nozzles shown in FIG. 5a
  • a large number of jet nozzles 17, 18 are arranged in a row next to one another.
  • the gas jet G17, G18 emerging from them is in turn directed in or against the conveying direction F of the belt B and likewise mixes with the gas jets G15, G16 emerging from the jet nozzles 15, 16 to form a side flow.
  • the gas jets G17 ', G18' emerging from the jet nozzles 17, 18 are not directed directly in or against the conveying direction F of the belt B. Instead, the gas jets G17 ', G18' flow out of the jet nozzles G17, G18 in a flow directed toward the respective other edge R and thereby strike the gas jets G15, G16 directed towards the respectively adjacent edge R. This leads to an even stronger vortex formation, which in turn favors the atomization of liquid accumulated on the belt.
  • the outlet nozzle 19 corresponding to the outlet nozzle 4 shown in FIG. 4 is formed in a nozzle body 20.
  • the nozzle body 20 is inserted into a rail-like recess 21, which extends over the width of the respective housing half 1 a, 1 b, and is detachably held therein.
  • a lip wiper 22 is provided, which is carried by a sealing body 23.
  • the sealing body 23 is also detachably held in a recess 24 of the respective housing half, so that it can be formed against a type of nozzle body 20 if necessary Nozzle body can be replaced.
  • the sealing body 24 has a lower height H than the depth T of the recess, so that the sealing body 24, guided by the side walls of the recess 24, can move therein. At the same time, the sealing body 23 is acted upon by the pressure of the gas present in the connecting line 10. In this way it is achieved that the lip wiper seal 21 always rests on the band B with the required contact pressure and at the same time is able to elastically avoid unevenness in the band. Damage to the lip scraper 22 when threading a new band B can also be avoided by the height adjustability of the sealing body 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)

Abstract

L'invention concerne un dispositif servant à enlever un liquide de la surface (O', O') d'une bande (B) sortant d'une machine de production de bandes, en particulier une machine de laminage, au moyen d'un jet de gaz (G1, G4, G5, Gzl, Gzr, G12-G18, G17', G18'), ledit dispositif comprenant une buse de sortie (2, 4, 5, 12-19) par laquelle sort le jet de gaz (G1, G4, G5, Gzl, Gzr, G12-G18, G17', G18'), ainsi qu'une ouverture d'aspiration (8a), par laquelle le jet de gaz (G1, G4, G5, Gzl, Gzr, G12-G18, G17', G18') mélangé avec le liquide peut être aspiré. Avec ce dispositif il est possible d'effectuer un nettoyage suffisant de la bande sur toute sa largeur. Cet objectif est atteint par le fait que le jet de gaz (G1, G4, G5, Gzl, Gzr, G12-18, G17', G18') et conduit sur la bande (B) en un courant (S1, S2) dirigé vers au moins un des bords latéraux (R) de la bande (B), et par le fait que le bord latéral (R) de la bande (B) vers lequel le courant (S, S2) est dirigé est pourvu d'une ouverture d'aspiration (8a).
EP96923900A 1995-05-27 1996-06-24 Dispositif servant a enlever un liquide de la surface d'une bande Expired - Lifetime EP0918579B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19519544A DE19519544C2 (de) 1995-05-27 1995-05-27 Vorrichtung zum Entfernen von Flüssigkeit von der Oberfläche eines Bandes
PCT/EP1996/002740 WO1997049507A1 (fr) 1995-05-27 1996-06-24 Dispositif servant a enlever un liquide de la surface d'une bande

Publications (2)

Publication Number Publication Date
EP0918579A1 true EP0918579A1 (fr) 1999-06-02
EP0918579B1 EP0918579B1 (fr) 2001-12-12

Family

ID=26015539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96923900A Expired - Lifetime EP0918579B1 (fr) 1995-05-27 1996-06-24 Dispositif servant a enlever un liquide de la surface d'une bande

Country Status (3)

Country Link
EP (1) EP0918579B1 (fr)
DE (1) DE19519544C2 (fr)
WO (1) WO1997049507A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19519544C2 (de) * 1995-05-27 1999-08-19 Sundwig Gmbh Vorrichtung zum Entfernen von Flüssigkeit von der Oberfläche eines Bandes
US6134811A (en) * 1996-06-24 2000-10-24 Sundwig Gmbh Device for removing liquid from the surface of a band
DE19627118C2 (de) * 1996-07-05 2000-04-27 Carl Kramer Verfahren und Vorrichtung zur Abblasung von Medien von Gutoberflächen
DE10206244A1 (de) * 2002-02-15 2003-08-28 Sms Demag Ag Vorrichtung zum Trockenhalten von Kaltband im Auslauf von Bandwalzanlagen
ITMI20022424A1 (it) 2002-11-15 2004-05-16 Danieli Off Mecc Dispositivo e processo di rimozione a secco della scaglia
ITMI20030273A1 (it) * 2003-02-14 2004-08-15 Percivalle Special Converting S A S Di Percivall Dispositivo e metodo per il trattamento termico di un
ES2355640T3 (es) * 2004-08-05 2011-03-29 Kabushiki Kaisha Kobe Seiko Sho Dispositivo de extracción de depósito.
ITMI20081162A1 (it) * 2008-06-26 2009-12-27 Danieli Off Mecc Dispositivo per la rimozione di liquido o particelle solide da una superficie piana di un prodotto metallico
TWI449587B (zh) * 2009-10-05 2014-08-21 Shinko Kk 除塵裝置
EP2311580B1 (fr) * 2009-10-16 2012-08-08 Shinko Co., Ltd. Appareil dépoussiérant
CN102039613B (zh) * 2009-10-22 2014-04-30 株式会社伸兴 除尘装置
CN103397337B (zh) * 2013-08-19 2016-01-20 山东恒运电器有限公司 一种水洗除锈除污装置
CN104550277A (zh) * 2015-01-06 2015-04-29 无锡常欣科技股份有限公司 钢丝吹风机构
CN112718893A (zh) * 2020-12-30 2021-04-30 江苏鼎胜新能源材料股份有限公司 一种基于气刀的铝箔表面除油装置
CN114659352B (zh) * 2022-03-16 2023-08-29 德州市立尊焊丝有限公司 一种焊丝气吹装置

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US3192752A (en) * 1963-06-27 1965-07-06 Aluminum Co Of America Cold rolling aluminum and product
US3607366A (en) * 1968-11-14 1971-09-21 Yawata Iron & Steel Co Removal of excess molten metal coatings by gas blast without ripple formations on coated surfaces
US4400961A (en) * 1981-07-15 1983-08-30 Schaming Edward J Apparatus for removing liquid coolant from metal strips in a rolling mill
ZA828745B (en) * 1981-12-24 1983-09-28 Wean United Inc Apparatus for removing liquid from a strip in a rolling mill and method thereof
US4601112A (en) * 1985-06-14 1986-07-22 Kaiser Aluminum & Chemical Corporation Liquid edgebead removal device
JPS62124015A (ja) * 1985-11-22 1987-06-05 Hitachi Ltd 圧延機用ワイパ装置
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
CN1082849C (zh) * 1994-09-06 2002-04-17 专利咨询及发展公司 从一条相对运动的材料幅上清除灰尘颗粒的方法及设备
DE19519544C2 (de) * 1995-05-27 1999-08-19 Sundwig Gmbh Vorrichtung zum Entfernen von Flüssigkeit von der Oberfläche eines Bandes

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Title
See references of WO9749507A1 *

Also Published As

Publication number Publication date
DE19519544A1 (de) 1996-11-28
WO1997049507A1 (fr) 1997-12-31
EP0918579B1 (fr) 2001-12-12
DE19519544C2 (de) 1999-08-19

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