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WO1996019705A1 - Dispositif de sechage de produits poses sur une bande convoyeuse en mouvement - Google Patents

Dispositif de sechage de produits poses sur une bande convoyeuse en mouvement Download PDF

Info

Publication number
WO1996019705A1
WO1996019705A1 PCT/EP1995/005075 EP9505075W WO9619705A1 WO 1996019705 A1 WO1996019705 A1 WO 1996019705A1 EP 9505075 W EP9505075 W EP 9505075W WO 9619705 A1 WO9619705 A1 WO 9619705A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
drying
level
box
levels
Prior art date
Application number
PCT/EP1995/005075
Other languages
German (de)
English (en)
Inventor
Georg Krebs
Original Assignee
Georg Krebs
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 Georg Krebs filed Critical Georg Krebs
Priority to EP95942190A priority Critical patent/EP0796416A1/fr
Publication of WO1996019705A1 publication Critical patent/WO1996019705A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/62—Uniting opposed surfaces or edges; Taping by adhesives

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • the distributor box which can be folded up from a fixed spaced position above the conveyor track and is equipped on both longitudinal sides with aprons pointing towards the conveyor track, is supplied with hot air, the hot air energy supply being regulated.
  • the distribution box is equipped with air slots distributed over the entire distribution box floor plan, which have angled baffles opposite the direction of transport of the conveyor track, so that an air cushion flowing over the conveyor track is generated in counterflow to the direction of transport.
  • the invention has for its object to provide a device for drying, which is compact and makes external air preheating - at least largely - superfluous. It is also desirable that low temperature drying be possible with lower energy consumption and a uniform air flow.
  • non-preheated ambient air is blown in at an upper end of the box via a gas conveying device (fan).
  • the air is then led over at least two levels, where it heats up.
  • the air flows along heat exchange surfaces. It is preferably guided through deflection plates (baffles) such that sufficient contact time for warming up is available on its way through the levels.
  • the heating is preferably effected by pipelines through which heating water flows and which run in a meandering fashion along the planes.
  • an air baffle is arranged near one end of the box, which in connection with that on the longitudinal side of the box attached aprons, the conveyor track and the bottom of the box bottom defines a drying channel start.
  • slot openings can be arranged over the entire width. These slit openings have the effect that small amounts of air can escape for predrying, so that the envelopes running under this air baffle undergo additional drying and / or a sealing air cushion is created at the material entry slit in the drying duct.
  • a gas discharge is arranged, via which the air is sucked off after the drying process.
  • the fan which sucks the air out of the device according to the invention is advantageously designed with a somewhat larger volume flow than the fan which blows the air into the drying device.
  • the two fans can also be combined in the form of a double fan.
  • guide plates can also be provided here, which are equipped with downward-pointing bends which ensure that the outflowing air is preferably sucked out of the drying device via the gas discharge.
  • the gas discharge is advantageously equipped with a heat exchanger, so that the air sucked out of the drying device, cooled considerably, is returned to the surrounding space.
  • This measure prevents the operating rooms from being excessively heated by the drying device.
  • the extracted air is guided in such a way that mixing of the moisture-saturated air from the drying device with the air to be blown into the drying device is avoided.
  • the heat exchanger arranged in the gas discharge is coupled to a heat exchanger in the gas supply, so that the waste heat after drying can be used to preheat the drying air.
  • the drying device according to the invention forms a compact unit which, like the known distribution box, can be folded up so that the transport path is accessible.
  • the hot water preparation and the fan or fans are preferably located as a compact unit under the machine frame of the conveyor track.
  • An external air preheating device possibly consisting of several heat exchangers, air collecting boxes, hot water boilers and fans with a corresponding space requirement is no longer required, since the air is heated in the drying device according to the invention.
  • the drying can be regulated via the amount of air or the air temperature, or in combination of both parameters.
  • the heating coils which are preferably arranged in the bottom of the penultimate level and on the deflections, can be supplied with differently warm heating water, so that optimum drying at low temperatures and with low energy is possible.
  • the drying device Since the air is heated in the drying device according to the invention, the amount of air and the temperature can be regulated much faster. This has the advantage that the sensor technology known per se, which controls the drying via the moisture of the glue layers, can be used much more effectively. On the other hand, the fact that the drying device regulates itself to the preselected temperature much more quickly saves more energy.
  • drying device can keep its preselected temperature as good as possible even when the machine is at a standstill. This means that after a machine standstill, immediately after machine start-up, the last drying temperature set is immediately available again.
  • the drying device can be easily assembled without major adjustment work after dismantling an existing drying device.
  • the glue layers can be dried more gently. The result of this is that the moisture in the paper is retained, so that static charges are avoided.
  • Figure 1 shows the device for drying according to the invention in a schematic longitudinal sectional view.
  • Fig. 3 shows the device according to the invention in perspective - again schematically.
  • the device 1 shows that the device 1 according to the invention consists of the air flow planes I, II and III.
  • the (last) level III is delimited at the bottom by a conveyor track 2, which transports envelopes (not shown) in direction X.
  • box 3 is shown above conveyor track 2.
  • a preheated ambient air is blown into the box 3 by a gas supply 6. It flows in a horizontal direction through level I and undergoes a deflection 9 into level II.
  • level I the air is primarily heated by a partition wall of level I and level II by means of an indirect heat exchange.
  • Pipelines 11 through which heating water flows are arranged in the deflection 9 for the further heating of the air.
  • the air is additionally deflected alternately in the horizontal direction by deflection plates 14.
  • the air is further heated via the box bottom 23 and diverted at 10 to level III.
  • Pipes 12 are arranged in the deflection 10, which further heat the air.
  • level III the air flows in counterflow to the transport direction X of the conveyor track 2 and dries the glue layers of the envelopes arranged on the conveyor track 2.
  • baffles 17 are arranged with bends 18, which ensure that the air is passed through the gas discharge 8 from the drying device.
  • a heat exchanger 20 is arranged in the gas discharge 8, in which the air is cooled.
  • the amount of heat given off to the heat exchanger 20 is passed to a heat exchanger 19 which is arranged in the gas supply 6, so that the blown-in, non-preheated room air is preheated from the waste heat of the air leaving the device 1.
  • FIG. 2 a / b shows that the box 3 is at a fixed distance A from the conveyor track 2.
  • Level II is shown in a horizontal section.
  • the air flow is again symbolized by arrows in FIG. 2b.
  • the air flows along the pipes 11 into level 2 and is passed through the baffles 14 (baffles) deflected. It heats up on its way through level II and then flows through the pipes 12 into level III. Further heating takes place through the pipelines 13.
  • the device according to the invention is shown in perspective in FIG. 3.
  • Box 3 with levels I, II and III is arranged above conveyor track 2.
  • Non-preheated air is blown into level I via the gas supply 6.
  • the air baffle 15 is arranged with slot openings 16, which, together with the aprons 4 known per se, effects a targeted guidance of the air flow in the plane III.
  • the baffles 17 are provided with bends 18 through which the air is guided into the gas discharge 8.
  • Air baffles 17 are provided in the region of the front end, so that the air can be largely completely exhausted via the gas discharge 8.
  • the heat exchanger 20 is connected to the heat exchanger 19 via pipes 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Drying Of Solid Materials (AREA)
  • Structure Of Belt Conveyors (AREA)

Abstract

L'invention concerne un dispositif (1) permettant de sécher des produits posés sur une bande convoyeuse (2) en mouvement, notamment des couches de colle d'enveloppes gommées, au moyen d'air chaud. Ce dispositif comprend un châssis (3) placé à distance constante de la bande convoyeuse (2), présentant un tablier (4) sur ses deux côtés longitudinaux, ainsi qu'un canal de séchage (niveau III) formé par un fond (23) du châssis (3), le tablier (4) et la bande convoyeuse (2). Un flux d'air de séchage est acheminé à contre courant du sens de transport (X) de la bande convoyeuse (2). Ce dispositif permet de renoncer, du moins en grande partie, à un préchauffage externe de l'air et d'effectuer le séchage à basse température, avec une consommation d'énergie plus faible et un flux d'air constant. A cet effet, le châssis (3) est conçu sous forme d'un échangeur de chaleur présentant au moins deux niveaux (I, II; III) parcourus par le flux d'air de séchage. Une arrivée de gaz (6) est affectée à l'un des niveaux, près de l'extrémité d'une face (5 ou 7) du châssis et une sortie de gaz (8) est affectée à un autre niveau, à une extrémité de la face (5, 7). Des éléments servant à l'échange de chaleur sont situés le long des niveaux, et des éléments servant à dévier le flux d'un niveau à l'autre sont situés au moins près de l'extrémité d'une face (5, 7) du châssis.
PCT/EP1995/005075 1994-12-22 1995-12-21 Dispositif de sechage de produits poses sur une bande convoyeuse en mouvement WO1996019705A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95942190A EP0796416A1 (fr) 1994-12-22 1995-12-21 Dispositif de sechage de produits poses sur une bande convoyeuse en mouvement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9420510U DE9420510U1 (de) 1994-12-22 1994-12-22 Vorrichtung zum Trocknen von auf einer bewegten Förderbahn aufliegenden Produkten
DEG9420510.8U 1994-12-22

Publications (1)

Publication Number Publication Date
WO1996019705A1 true WO1996019705A1 (fr) 1996-06-27

Family

ID=6917763

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/005075 WO1996019705A1 (fr) 1994-12-22 1995-12-21 Dispositif de sechage de produits poses sur une bande convoyeuse en mouvement

Country Status (3)

Country Link
EP (1) EP0796416A1 (fr)
DE (1) DE9420510U1 (fr)
WO (1) WO1996019705A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH699658A1 (de) * 2008-10-13 2010-04-15 Strahm Hi Tex Systems Ag Vorrichtung zur Wärmerückgewinnung an einer Anlage zur thermischen Behandlung von Warenbahnen.
CN106766714A (zh) * 2016-12-08 2017-05-31 滁州源远纸制品有限公司 一种纸管生产用纸管干燥箱

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1405781A (en) * 1918-04-20 1922-02-07 Nat Evaporator Corp Conveyer drying apparatus
US3793741A (en) * 1972-01-07 1974-02-26 Smitherm Industries Drying apparatus with moisture profile control
US3869249A (en) * 1974-03-22 1975-03-04 Indian Head Inc Curing oven
US4287671A (en) * 1978-09-15 1981-09-08 George Koch Sons, Inc. Method of curing coated articles
EP0177774A2 (fr) * 1984-09-10 1986-04-16 Lohmann GmbH & Co. KG Dispositif de séchage pour des matériaux en bande
US4611989A (en) * 1985-08-28 1986-09-16 Erik Kersting Horizontally extending curing devices
WO1993019337A2 (fr) * 1992-03-19 1993-09-30 Reinhart Schmidt Gmbh Dispositif pour secher des produits se trouvant sur une brande transporteuse en mouvement, notamment les parties gommees d'enveloppes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3012880A1 (de) * 1980-04-02 1981-10-15 Babcock Textilmaschinen Kg (Gmbh & Co), 2105 Seevetal Trockner, insbesondere fuer laufende textilbahnen u.dgl.
DE9301181U1 (de) * 1993-01-29 1994-06-01 Wiesenborn, Wilfried, 41812 Erkelenz Maschine zur Herstellung von mit gummierten Leimschichten ausgestatteten Briefumschlägen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1405781A (en) * 1918-04-20 1922-02-07 Nat Evaporator Corp Conveyer drying apparatus
US3793741A (en) * 1972-01-07 1974-02-26 Smitherm Industries Drying apparatus with moisture profile control
US3869249A (en) * 1974-03-22 1975-03-04 Indian Head Inc Curing oven
US4287671A (en) * 1978-09-15 1981-09-08 George Koch Sons, Inc. Method of curing coated articles
EP0177774A2 (fr) * 1984-09-10 1986-04-16 Lohmann GmbH & Co. KG Dispositif de séchage pour des matériaux en bande
US4611989A (en) * 1985-08-28 1986-09-16 Erik Kersting Horizontally extending curing devices
WO1993019337A2 (fr) * 1992-03-19 1993-09-30 Reinhart Schmidt Gmbh Dispositif pour secher des produits se trouvant sur une brande transporteuse en mouvement, notamment les parties gommees d'enveloppes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH699658A1 (de) * 2008-10-13 2010-04-15 Strahm Hi Tex Systems Ag Vorrichtung zur Wärmerückgewinnung an einer Anlage zur thermischen Behandlung von Warenbahnen.
CN106766714A (zh) * 2016-12-08 2017-05-31 滁州源远纸制品有限公司 一种纸管生产用纸管干燥箱
CN106766714B (zh) * 2016-12-08 2019-02-01 重庆新万合环保包装科技有限公司 一种纸管生产用纸管干燥箱

Also Published As

Publication number Publication date
DE9420510U1 (de) 1995-04-20
EP0796416A1 (fr) 1997-09-24

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