US3360872A - Sieve drum dryers - Google Patents

Sieve drum dryers Download PDF

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Publication number
US3360872A
US3360872A US571517A US57151766A US3360872A US 3360872 A US3360872 A US 3360872A US 571517 A US571517 A US 571517A US 57151766 A US57151766 A US 57151766A US 3360872 A US3360872 A US 3360872A
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US
United States
Prior art keywords
drum
drums
air
sieve
fans
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
US571517A
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English (en)
Inventor
Fleissner Hans
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ESTABLISHMENT FOR AUTOMATION Firma
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ESTABLISHMENT FOR AUTOMATION Firma
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 ESTABLISHMENT FOR AUTOMATION Firma filed Critical ESTABLISHMENT FOR AUTOMATION Firma
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Publication of US3360872A publication Critical patent/US3360872A/en
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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
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/28—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rollers or discs with material passing over or between them, e.g. suction drum, sieve, the axis of rotation being in fixed position
    • F26B17/288—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rollers or discs with material passing over or between them, e.g. suction drum, sieve, the axis of rotation being in fixed position the materials being dried on perforated drums or rollers, e.g. sieve or suction drums
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/10—Drying cabinets or drying chambers having heating or ventilating means
    • D06F58/12—Drying cabinets or drying chambers having heating or ventilating means having conveying means for moving clothes, e.g. along an endless track
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • 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
    • 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
    • F26B13/30—Arrangements of devices using drying processes not involving heating for applying suction
    • 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
    • Y10S68/902—Devices for storage and reuse of soap suds
    • 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

  • This invention generally relates to sieve drum dryers and is particularly concerned with an improved construction for guiding and conducting the air ow in such dryers in a particularly advantageous and efficient manner.
  • At least two sieve drums are rotatably arranged adjacent each other in a casing defining a drying chamber.
  • the casing has an inlet side and a discharge side.
  • Material to be dried within the dryer is introduced through the inlet side and travels over the exterior surfaces of the adjacently arranged drums in a ywave-like pattern, that is the material, for example textile webs, travels first over one-half of the rotating drum adjacent the inlet, is fed into the nip between this and the next adjacent drum, and continues its passage through the dryer on the exterior of the other half of the next adjacent drum and so on until the material is discharged through the discharge side.
  • the material to be dried in this type of dryer is held on the drum exterior by means of suction which is created within the drum interior. This is usually accomplished by radial fans within the drums which are coaxially mounted on the drive shafts of the respective drums. Due to the subatmospheric pressure conditions prevailing Within the drum interior, the material traveling over the drum is not only urged thereagainst and held thereon but large quantities of air are sucked through the material, the amount of air passing through the material being dependent on the air permeability of the material.
  • air as used herein is not limited to air proper but includes other gaseous media used for drying material in drum dryers.
  • the fan located coaxially and exteriorly of the first sieve drum i.e. the drum adjacent the inlet, over which the material to be dried travels, is rotated in a direction opposite to the rotational direction of that sieve drum.
  • rotation of the fan in a direction opposite to the rotational direction of the first sieve drum results in a number of important advantages. Due to this arrangement, the air outside the drum is first moved for a short period in a direction opposite to the direction of movement of the material. Thereafter, the air ow is deiiected in the vicinity of the sieve drum jacket to flow through the material in radial direction. This is accomplished by the uniform suction force which acts in the region of the drum circumference.
  • the material Due to the radial flow of the air through the material, the material is subjected to a motion component which acts in the rotational direction of the sieve drum.
  • the casing of the dryer is provided at the inlet side with an end wall or baffle which extends and may be adjusted or positioned in a suitable manner. This baffle prevents substantial deviation of the air from the radial flow direction relative to the rotational movement of the material. The air is thus sucked through the pores of the material and the perforations of the drum in radial direction.
  • This end Wall or baffle is preferably adjustable toward all directions relative to the sieve drum so as suitably to intiuence and conne the air flow. In this manner, the motion component in the direction of movement of the material can be adjusted to any desired deg-ree.
  • the inventive construction distinguishes over the prior art constructions because, in the pior art constructions, in which the fan and the drum rotate unidirectionally, the air or the like gaseous medium is first sucked away from below the subsequent sieve drum surface which is not covered by the material to be dried.
  • the supply of air to the first sieve dru-m thus emanates in the prior art constructions to a large extent from the subsequent sieve drum, which results in the disadvantages previously referred to.
  • the fans arranged coaxially and exteriorly of the subsequent sieve drums may all rotate in a direction opposite to that of the respective drum. It should be realized, however, that the rotational movement of the fan of the first drum is decisive also for the air fiow passing through the material on the subsequent drums. Therefore, the inventive arrangement according to which the fan of the first drum rotates in a direction opposite to that of the drum significantly influences a favorable air flow through the subsequent drums even if the fans of the subsequent drums rotate in the same direction as the drums.
  • the invention significantly improves the output of sieve dryers of this kind due to the improved air flow with resulting increased drying capacity and more secure adherence of the material on the drum exterors.
  • the inventive system enables control of the air flow within wide limits, due to the arrangement of the adjustable baflie plate at the inlet side of the drying chamber.
  • the material to be dried is, of course, the heaviest when it starts wrapping around the first drum so that the control of the air flow with regard to the first drum is more critical than with regard to the subsequent drums.
  • Undesired turbulence or cross flow con- 3 ditions of the air at the first drum negatively affect the travel of the material through the dryer.
  • FIG. 1 is a longitudinal sectional view through a drum dryer embodying the invention, taken on the line 1 1 of FIG. 2;
  • FIG. 2 is a transverse sectional view of the drum dryer looking from the left of FIG. 1.
  • the drum dryer generally indicated by reference numeral 100 comprises a casing 15 defining an interior chamber 20.
  • Sieve drums 3 and 4 are mounted adjacent each other for rotation within the charn- ⁇ ber 20.
  • the drums 3 and 4 are perforated as seen at 25.
  • the upper half of the drum 3, as seen in the drawing, has an interior balie plate 27 blocking the perforations while a corresponding plate 29 is arranged to cover the perforations of the lower half of drum 4.
  • yFans 7 and S are respectively coaxially arranged exteriorly of the drums 3 and 4.
  • the material to be dried which may, for example, be a wet web of textile material 1, is introduced through the inlet 30.
  • an endless conveyor belt 2 is arranged adjacent the inlet 30. yThe web now travels over the lower exterior portion of drum 3 into the nip between drums 3 and 4 and over the upper exterior surface of drum 4, whereafter the web is discharged through the discharge end 36.
  • a chute or slide member 5 is ⁇ provided, as indicated in the drawing.
  • the fan 7 which is coaxially arranged exteriorly of the'rst drum 3, rotates K in a direction opposite to the rotational direction of drum 3.
  • the arrow 9 whichindicates the rotational direction of fan 7 as distinguished from the arrow 6 which indicates the rotational direction of drum 3.
  • fan S coaxially arranged exteriorly of drum 4 also rotates in a direction opposite to the rotational direction of drum 4, as indicated by arrow 9'.
  • the opposite rotation of the drums and fans, respectively, results in an air flow as indicated by the arrows 10.
  • the air is first urged in a direction opposed to the rotational direction of the drum whereafter, due to the suction created within the drum interior, the air is deflected and passes radially through the material into the drum.
  • I inlet side of the casing is provided with an end plate or baffle 11 which is adjustable in any desired direction.
  • Wall portion 11 is provided with an adjustable portion whichk is adjustable about a hinge 12, and is further provided with a bolt adjustment means 13 by means of which its position may be adjusted as indicated by the double headed arrow.
  • the driving means for drum 3 and the fan 7 is indicated 16 in FIG. l, drum 3 being driven through member 17 independently of fan 7. Also referring to FIG. l, it will be noted that the air discharged radially from fan 7 exits from casing 15 through perforations or apertures E6.
  • the inventive construction has the particular advantage that also loosely united materials which generally can be maintained only with difficulty on the lower half of the drums, can be dried effectively without being blown off from the drums.
  • the radial tiow of the air through the perforations into the interior of the drums effectively retains even strands of material on the surface of the drums.
  • a drying device comprising a housing defining a drying chamber, at least two perforated drums rotatably mounted within said chamber in adjacent parallel relation, at least two fans rotatably mounted within said chamber, each coaxial with a respective drum and positioned exteriorly of one axial end of the associated drum, each fan moving air inwardly through the perforations of its associated drum and axially through the interior thereof for discharge exteriorly of the associated drum, the material to be dried traveling over the perforated exterior drum surfaces and being held thereon by suction generated within the drum interiors by the associated fans, and driving means connected to said dru-ms and to the associated fans to rotate the same, said driving means rotating at least the first drum over which the material travels, and its associated fan, in opposite angular directions.
  • said housing has an inlet side and a discharge side, and including an adjustable wall member mounted on said inlet side adjacent said first drum and adjustable relative to said rst drum.
  • a drying device as claimed in claim 3, wherein said driving means rotates all of said fans in the same angular direction.
  • a drying device as claimed in claim 2, wherein said wall member includes a wall portion angularly adjustable relative to the remainder of said wall member about a horizontal axis and relative to said iirst drum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
US571517A 1962-06-19 1966-08-10 Sieve drum dryers Expired - Lifetime US3360872A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH732862A CH394952A (de) 1962-06-19 1962-06-19 Trockenanlage mit wenigstens zwei Siebtrommeln

Publications (1)

Publication Number Publication Date
US3360872A true US3360872A (en) 1968-01-02

Family

ID=4323404

Family Applications (1)

Application Number Title Priority Date Filing Date
US571517A Expired - Lifetime US3360872A (en) 1962-06-19 1966-08-10 Sieve drum dryers

Country Status (6)

Country Link
US (1) US3360872A (de)
CH (1) CH394952A (de)
DE (1) DE1604850B1 (de)
ES (1) ES289160A1 (de)
FR (1) FR1362801A (de)
GB (1) GB992996A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH415524A (de) * 1964-05-08 1966-06-30 Patentdienst Anst Siebtrommeltrockner
DE102015118596A1 (de) * 2015-10-30 2017-05-04 TRüTZSCHLER GMBH & CO. KG Vorrichtung und Verfahren zum thermischen Behandeln einer textilen Warenbahn

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1314360A (fr) * 1959-08-04 1963-01-11 Fleissner Dispositif de contraction

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1827019U (de) * 1956-02-14 1961-02-23 Fleissner G M B H Siebtrommeltrockner zum trocknen von losem fasermaterial.
DE1036800B (de) * 1956-03-07 1958-08-21 Fleissner & Sohn Maschinenfabr Mehrtrommeltrockner fuer loses Fasergut
US3027006A (en) * 1959-05-14 1962-03-27 Fleissner Ges Mit Beschraenkte Method and apparatus for processing shaving like materials
DE1148515B (de) * 1959-10-26 1963-05-16 Fleissner G M B H Vorrichtung zum Behandeln von luftdurchlaessigem Gut
FR1276837A (fr) * 1960-10-10 1961-11-24 Système de guidage de l'air dans les séchoirs à tambours perforés
DE1157186B (de) * 1960-11-02 1963-11-14 Spinnfaser Ag Verfahren und Vorrichtung zum Trocknen von fadenfoermigem oder losem Gut in Vliesform
FR1300520A (fr) * 1961-09-14 1962-08-03 Fleissner Gmbh Procédé et dispositif pour le séchage de matières

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1314360A (fr) * 1959-08-04 1963-01-11 Fleissner Dispositif de contraction

Also Published As

Publication number Publication date
CH394952A (de) 1965-06-30
GB992996A (en) 1965-05-26
ES289160A1 (es) 1963-12-16
DE1604850B1 (de) 1970-09-24
FR1362801A (fr) 1964-06-05

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