US3476367A - Heat-treatment apparatus - Google Patents

Heat-treatment apparatus Download PDF

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Publication number
US3476367A
US3476367A US585809A US3476367DA US3476367A US 3476367 A US3476367 A US 3476367A US 585809 A US585809 A US 585809A US 3476367D A US3476367D A US 3476367DA US 3476367 A US3476367 A US 3476367A
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US
United States
Prior art keywords
drum
sieve
treatment medium
sieve drum
heat
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.)
Expired - Lifetime
Application number
US585809A
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English (en)
Inventor
Heinz Fleissner
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.)
Vepa AG
Original Assignee
Vepa AG
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
Priority claimed from DE1965A0050478 external-priority patent/DE1501356B2/de
Application filed by Vepa AG filed Critical Vepa AG
Application granted granted Critical
Publication of US3476367A publication Critical patent/US3476367A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/16—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning perforated in combination with hot air blowing or suction devices, e.g. sieve drum dryers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/06—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam for articles of indefinite length
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
    • D06B23/22—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation for heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/10—Cords, strands or rovings, e.g. oriented cords, strands or rovings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S68/00—Textiles: fluid treating apparatus
    • Y10S68/903—Perforated drum and continuous textile feed and discharge

Definitions

  • the present invention relates to a device for the heat treatment, for example, for drying, polymerizing, and curing of materials impregnated with synthetic resins and for heat-setting materials of all kinds, preferably natural and synthetic fibrous materials.
  • the invention concerns a closed housing in which sieve drums subjected to a suction draft are provided as conveying elements, with fans correlated to the faces of the sieve drums which function to draw a treatment medium out of the sieve drums and return it to the space surrounding the sieve drums. Heating means are also provided for heating the circulated treatment medium.
  • Sieve drum dryers which are provided with a closed housing which is subdivided by a partition into a treatment chamber, with sieve drums subjected to a suction draft, and into a fan chamber, with radial fans which are correlated to the faces of the sieve drums, are well known.
  • heater batteries are provided in the fan chamber above and below the radial fans through which the air discharged by the fans is passed and heated before entering the treatment chamber.
  • the heater batteries generally consist of steam-heated ribbed tubes.
  • devices are also known wherein hot combustion gases of an oil burner or of a gas burner are passed through the heater tubes.
  • An object of the present invention is to reduce the manufacturing and operating cost of a heat-treatment and drying device of the kind previously described, and to increase the capacity of this device. This is possible because the space in which the heater batteries can be effectively accommodated is limited and since this space is in general already completely occupied by heater batteries, an increase of the heaters capacity by providing further heater batteries is only possible by enlarging the heating device, thus rendering it more expensive.
  • the apparatus of the present invention also offers the further advantage that the oxygen of the air is substantially replaced by combustion gases, so that fiber damage and/or yellowing of the fibers caused by the influence of oxygen at high temperature treatments, also often experienced by present day heating devices, is eliminated or at least substantially reduced.
  • the direct heating means is provided, for example, by burners which are arranged annularly between the exhaust sockets of the sieve drum and the exhaust socket of the fan.
  • This arrangement offers the advantage of an intimate mixing and uniform heating of the treatment medium with the combustion flue gases. Furthermore, it offers the advantage that the fuel and compressed air feed lines can be connected to the stationary burner body without an essential modification of the existing apparatus.
  • the drum cross which supports the sieve drum can be designed as a burner body. It has also been found to be advantageous to mount burner bodies to the drum cross.
  • the flames In order to prevent the flames from being extinguished by the treatment medium, which is drawn by the suction of the fan wheel out of the sieve drum transversely to the flames, it is desirable to screen the flames, preferably within the range of the flame cone, from the suction of the treatment medium, which is directed transversely to the plane of the flame. This can be achieved by arranging the burners annularly at a predetermined distance from the suction duct so that the flames may burn in a space in which no suction prevails and where only the points of the flames extend into the suction draft.
  • the heating of the circulated treatment medium is eifected by mixing it with combustion flue gases and by the radiation heat of the flames.
  • the burner body or burner bodies is/are mounted to the wall between the treatment chamber and the fan chamber. It is advantageous to arrange the burners between the drum cross and the exhaust socket of the fan in the fan chamber so that the partition between the fan chamber and the treatment chamber screens of the radiation heat from the treatment chamber. This arrangement is of particular advantage for very large burner assemblies and thus for high-capacity devices.
  • the burners are arranged in the sieve drum and are mounted to the stationary sieve drum axis.
  • the stationary sieve drum axis itself may be designed as a burner body and the burner nozzles may be accommodated in appropriate drillings.
  • Another manner in which the burners may be arranged in the sieve drum is to mount the burners to a stationary baffle, so that a greater distance between the burners and the material adhering to the sieve drum can be obtained.
  • the burners are arranged in the rotating sieve drum, provision must be made to introduce the fuel and compressed air feed lines into the sieve drum without providing openings in the apparatus for sucking in the off-air.
  • this may be achieved by designing the sieve drum axis as a hollow axis and by arranging the fuel and com pressed air feed lines in the hollow space of the stationary sieve drum axis.
  • Another manner for introducing the fuel and compressed air feed lines into the drum is to provide drillings in the drum cross'and to introduce the feed lines into the sieve drum through these drillin'gs.
  • the feed lines are introduced into the sieve drum on the suction side, i.e., on the fan side, whereas in the case of the first-mentioned situation they are introduced into the sieve drum on the drive side.
  • the heat consumption varies widely according to the material to be treated, it is necessary to adapt the heat supply to the particular circumstances in order to avoid over heating. This can be accomplished by varying the numbers of burners utilized and by coordinating the burners with a means for multi-stage off-on switching of the burners. At the same time, or instead of the multi-stage switching means, the burners may be designed so that their heat producing capacity are infinitely variable. In general, however, the combination of a multi-stage switching means with an infinitely variable control would be most advantageous.
  • the burner or burners can also be designed as a stationary part of the exhaust socket with several burner rings, one behind the other. Thus the capacity can be changed in steps by switching on and off one or several burner rings.
  • the bottom of the sieve drum which is most distant from the stationary fan can also be designed as a burner body or as a burner support and the sieve drum can be mounted to the burner body or the burner support.
  • the arrangement of the direct heating within the circulation of the treatment medium offers the further ad vantage that fluifs or other particles which become detached from the material to be treated are burned so that soiling of the device is substantially reduced when compared with the known sieve drum dryers using direct heating.
  • the apparatus of the present invention is not only rendered less expensive but also a considerable amount of resistance which the ribbed heaters presented to the circulation of the treatment medium is eliminated so that the amount of circulated air can be considerably increased for the same fan capacity.
  • a filter may be arranged within the circulation of the treatment medium if a delicate textile material is being processed. In such a case, it is advantageous to provide filters instead of sieve sheets which can be positioned above and below the sieve drums or in the alternative to provide the sieve sheets with thin filter coatings.
  • FIGURE 1 is a cross section of the apparatus according to the present invention.
  • FIGURE 2 is a cross section of another embodiment of the apparatus according to the present invention.
  • FIGURE 3 is a longitudinal section of FIGURE 2, taken along line AA of the apparatus according to the present invention.
  • reference numeral 1 designates in all figures a closed housing.
  • sieve drums 2 are provided as conveying elements which are separated by a partition 4 from fans 3 which are correlated to the faces of the sieve drums.
  • the fans suck the treatment medium 4 out of the sieve drums in a known way, thereby creating a partial vacuum in the sieve drums which is utilized for holding and drying the material 5 to be treated.
  • the partial vacuum causes the treatment medium to be passed through the material into the sieve drums. This has the advantage of an intimate contact between the treatment medium and material 5 and also a rapid and intensive heat transfer between the treatment medium and said material to be treated.
  • conveyor belts 6 are used at the intake and the delivery end of the apparatus.
  • stationary batfles 7 are provided which interrupt the suction draft on that portion of the sieve drum which is not covered by the material being treated.
  • sieve sheets 8 and oblique bottoms 9 are provided which insure a uniform distribution of the treatment medium discharge by the fans over the whole working width of the sieve drums.
  • Deflector sheets 10 are provided above and below the fan for deflecting the air and/or the treatment medium which is discharged both upwards and downwards.
  • annular burner body 13 is provided between the sieve drum and the drum cross 12 for heating the treatment medium.
  • the drum'cross functions to support drum axis 11. Since the free inner ring of the annular burner body 13 has a larger diameter than the free diameter of cast-iron spider 14 and the drum cross, an annular space is created for the flames between the cast-iron spider 14 and the drum cross. This space is free from the transverse current of the treatment medium directed towards the fan, so that flames 15 may develop in this space, with only the tips of the flames being seized by the transverse current of the treatment medium and sucked into the fan.
  • the fan effects an intimate mixing of the hot combustion gases with the treatment medium and thus a uniform heating of the treatment medium is achieved.
  • FIGURES 2 and 3 illustrate that a dish-shaped burner body 16 can be mounted to drum axis 11 which is hollow in order to provide for the supply of fuel and compressed air therein. Using this arrangement the radiation of flames 15 heats up the sieve dium which in turn transfers its heat to the material to be treated.
  • the apparatus of the present invention can be heated with gas, oil, and other liquid or gaseous fuels.
  • a stepwise turning-on of the burner is possible when the burner body 16 consists of several mutually separate segments 21 with a proper individual gas supply line and a priming device. As is evident from FIGURE 3, it is then possible to ignite only one segment or any number thereof, in combination.
  • FIGURE 2 shows a means for infinitely regulating the supply of gas to the burner.
  • the drum axle is provided as a hollow shaft (see FIGURE 3) into which a feed line 17 may be placed.
  • the line 17 is connected with a blower 18 which has an infinitely variable motor 19.
  • the gas which is introduced by way of line 20 is mixed at the same time with the fresh air being drawn in from the room.
  • FIGURES 1, 2 and 3 show the apparatus of the present invention using two sieve drums, it is contemplated that any number of sieve drums including only one can be utilized depending upon the intended use of the apparatus and the material being treated.
  • a heat-treating apparatus which comprises a closed housing, at least one cylindrical sieve drum rotatably disposed within said housing and defining an annular space surrounding said cylindrical sieve drum, the cylindrical surface of said sieve drum serving as a conveying means, vacuum-creating means communicating with the interior of the cylindrical sieve drum for directing a treatment medium from the inside of said drum to the annular space surrounding said drum, direct heating means provided within the circulation of the treatment medium in the vacuum portion of the apparatus between the material being treated and the vacuum-creating means, inlet means for introducing the material to be heat-treated to said conveying means and outlet means for removing said heat-treated material from said conveying means.
  • heating means is a burner body means mounted to the wall between the treatment chamber and the fan chamber.
  • heating means is a burner body means disposed between the drum cross and the exhaust socket of the fan in the fan chamber.
  • a stationary baffle is disposed on the inside of the cylindrical sieve drum and shields that portion of the drum which is not in contact with the material being treated.
  • An apparatus according to claim 13 wherein a device for the multi-stage switching of the direct heating means is provided to vary the heating capacity of the apparatus.
  • deflector sheets and oblique bafile are disposed within the circulation of the treatment medium between the exhaust of the vacuum means and the sieve sheets.
  • the direct heating means is an annular burner body disposed between the sieve drum and a drum cross, said drum cross providing axial support for the cylindrical sieve drum on its vacuum side.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
US585809A 1965-10-13 1966-10-11 Heat-treatment apparatus Expired - Lifetime US3476367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965A0050478 DE1501356B2 (de) 1965-10-13 1965-10-13 Vorrichtung zum waermebehandeln von guetern aller art

Publications (1)

Publication Number Publication Date
US3476367A true US3476367A (en) 1969-11-04

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ID=6937422

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Application Number Title Priority Date Filing Date
US585809A Expired - Lifetime US3476367A (en) 1965-10-13 1966-10-11 Heat-treatment apparatus

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US (1) US3476367A (enrdf_load_stackoverflow)
BE (1) BE688115A (enrdf_load_stackoverflow)
FR (1) FR1496513A (enrdf_load_stackoverflow)
GB (1) GB1107070A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819325A (en) * 1971-06-23 1974-06-25 E Bates Method of treating a fabric web with a liquid
US3984198A (en) * 1972-02-23 1976-10-05 Hoechst Aktiengesellschaft Device for the impregnation and drying of textile material
US4570361A (en) * 1981-06-13 1986-02-18 Vepa Aktiengesellschaft Sieve drum device with flame heating
US5185940A (en) * 1990-07-13 1993-02-16 Fleissner Maschinenfabrik Ag Device for through-flow processing of web material
WO2004106827A3 (de) * 2003-05-28 2005-01-13 Carl Krafft & Soehne Gmbh & Co Trockeneinrichtung mit einem zylinder, vorrichtung mit einer vielzahl an trockenzylindern und verfahren zum trocknen einer materialbahn
US6898811B2 (en) 2002-09-10 2005-05-31 Pediatric Medical Devices, Inc. Device for emergency transport of pediatric patients
US20090165935A1 (en) * 2007-12-28 2009-07-02 Philip Morris Usa Inc. Filter tube making
US11019942B1 (en) 2018-05-21 2021-06-01 Pediatric Medical Llc Cushions for safe, sanitary transportation of children
WO2023001712A3 (en) * 2021-07-22 2023-03-16 Valmet Ab Compact high performance through-air apparatus
IT202200023484A1 (it) * 2022-11-15 2024-05-15 Zhanna Zurabyan Macchina per il trattamento termico di filati

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3081556A (en) * 1959-09-04 1963-03-19 Fleissner Gmbh Sieve drum driers
US3084447A (en) * 1959-03-05 1963-04-09 Fleissner & Co G M B H Treatment plant for two-faced cellulosic material
US3178831A (en) * 1961-02-16 1965-04-20 Howlett Edward John Apparatus for drying continuous webs of textile material
US3196555A (en) * 1960-10-04 1965-07-27 Fleissner Gmbh Drying apparatus
US3313039A (en) * 1965-04-26 1967-04-11 Proctor & Schwartz Inc Cooling arrangement for drum dryer fan bearings
US3357111A (en) * 1964-05-20 1967-12-12 Fleissner Gmbh Material guarding and guiding means for sieve drums

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3084447A (en) * 1959-03-05 1963-04-09 Fleissner & Co G M B H Treatment plant for two-faced cellulosic material
US3081556A (en) * 1959-09-04 1963-03-19 Fleissner Gmbh Sieve drum driers
US3196555A (en) * 1960-10-04 1965-07-27 Fleissner Gmbh Drying apparatus
US3178831A (en) * 1961-02-16 1965-04-20 Howlett Edward John Apparatus for drying continuous webs of textile material
US3357111A (en) * 1964-05-20 1967-12-12 Fleissner Gmbh Material guarding and guiding means for sieve drums
US3313039A (en) * 1965-04-26 1967-04-11 Proctor & Schwartz Inc Cooling arrangement for drum dryer fan bearings

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819325A (en) * 1971-06-23 1974-06-25 E Bates Method of treating a fabric web with a liquid
US3984198A (en) * 1972-02-23 1976-10-05 Hoechst Aktiengesellschaft Device for the impregnation and drying of textile material
US4570361A (en) * 1981-06-13 1986-02-18 Vepa Aktiengesellschaft Sieve drum device with flame heating
US5185940A (en) * 1990-07-13 1993-02-16 Fleissner Maschinenfabrik Ag Device for through-flow processing of web material
US6898811B2 (en) 2002-09-10 2005-05-31 Pediatric Medical Devices, Inc. Device for emergency transport of pediatric patients
WO2004106827A3 (de) * 2003-05-28 2005-01-13 Carl Krafft & Soehne Gmbh & Co Trockeneinrichtung mit einem zylinder, vorrichtung mit einer vielzahl an trockenzylindern und verfahren zum trocknen einer materialbahn
US20090165935A1 (en) * 2007-12-28 2009-07-02 Philip Morris Usa Inc. Filter tube making
US8142598B2 (en) * 2007-12-28 2012-03-27 Philip Morris Usa Inc. Filter tube making
US11019942B1 (en) 2018-05-21 2021-06-01 Pediatric Medical Llc Cushions for safe, sanitary transportation of children
WO2023001712A3 (en) * 2021-07-22 2023-03-16 Valmet Ab Compact high performance through-air apparatus
IT202200023484A1 (it) * 2022-11-15 2024-05-15 Zhanna Zurabyan Macchina per il trattamento termico di filati

Also Published As

Publication number Publication date
GB1107070A (en) 1968-03-20
BE688115A (enrdf_load_stackoverflow) 1967-03-16
FR1496513A (fr) 1967-09-29

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