US3503229A - Apparatus for rewashing raw wool - Google Patents

Apparatus for rewashing raw wool Download PDF

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Publication number
US3503229A
US3503229A US596212A US3503229DA US3503229A US 3503229 A US3503229 A US 3503229A US 596212 A US596212 A US 596212A US 3503229D A US3503229D A US 3503229DA US 3503229 A US3503229 A US 3503229A
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US
United States
Prior art keywords
wool
container
solvent
treatment
drum
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
US596212A
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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
Application filed by Vepa AG filed Critical Vepa AG
Application granted granted Critical
Publication of US3503229A publication Critical patent/US3503229A/en
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01B—MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING
    • D01B3/00—Mechanical removal of impurities from animal fibres
    • D01B3/04—Machines or apparatus for washing or scouring loose wool fibres
    • D01B3/08—Machines or apparatus for washing or scouring loose wool fibres with longitudinal movement of either wool or liquid
    • 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
    • D06B5/00—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating
    • D06B5/02—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through moving materials of indefinite length
    • D06B5/04—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through moving materials of indefinite length through slivers 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 an apparatus for rewashing raw wool which has been prewashed with a solvent. More specifically, the present invention concerns an apparatus comprising a train of conveying elements which is used to convey the raw wool through the treatment medium.
  • a well known solvent used for cleaning wool is trichlorethylene.
  • This solvent offers the advantage that it is non-inflammable and that it boils at 73 C. in the presence of water. Therefore, trichlorethylene can be extracted from the wool, shock-like, in hot water at a temperature which is higher than the afore-mentioned boiling point, for example about 80 to 90 C. at the sudden transition from the liquid to the gaseous phase a vigorous cavitation occurs.
  • the gas bubbles which form in the wool open the fibers and the fiber tufts. Tests have also shown that the wool tips which are coalesced with dirt and mud are opened so that the removal of the solid matter, that is, the contaminates from the wool, is substantially facilitated and sped up.
  • Solvents other than trichlorethylene can also be used provided they have a boiling point lower than the boiling point of water.
  • Patented Mar. 31, 1970 when used, is generally limited to degreasing wool fabrics of all types.
  • An object of the present invention is to eliminate the disadvantages of the prior art apparatus for Washing wool.
  • Another object of the present invention is to provide an apparatus for rewashing raw wool which has been prewashed with solvents, wherein the treatment medium is heated to a temperature which is higher than the volatilization temperature of the solvent contained in the wool.
  • a further object of the present invention is to provide an apparatus which insures substantial contact of the treatment medium with the raw Wool to be treated.
  • a still further object of the present invention is to provide an apparatus with means for conveying the raw wool to be treated through the treatment medium to the outlet of the treatment bath.
  • Still another object of the present invention is to provide an apparatus for complete removal of the solvent as well as a good and complete opening of the raw wool tufts, thus effecting a substantial cleaning of the raw wool.
  • an apparatus which effects a uniform and efiicient treatment of wool which comprises a conveying element disposed in a treatment container, said conveying element being at least partially immersed in a treatment liquid in said container and advantageously slightly declined towards the outlet of the container.
  • the conveying element is a gaspermeable conveyor belt which guides the loose wool at its lower surface.
  • the loose wool is transferred from the lower surface of the conveyor belt to the lower surface of a discharge device, which guides the wool from the treatment apparatus.
  • the conveyor belt and the discharge device insure substantial contact of the wool with the treatment medium which can be for example water.
  • the discharge device of the present invention is a suction drum which is subjected to a suction draft and which functions to convey the washed wool to a pair of squeeze rollers and/or a squeezer located behind the suction drum.
  • a short chute between the suction drum and the pair of squeeze rollers such chute being mounted to the face of the treatment bath.
  • the face of the bath can be designed as a short chute.
  • the immersion of the wool, enriched with moisture, in the heated treatment bath is facilitated by locating an impeller or bolt drum and/ or roller at a distance from the conveyor belt such that the surface of the impeller or bolt drum and/or roller, together with the surface of the conveyor belt forms a feeding funnel for the wool.
  • the wool is immersed in the treatment liquid, and by the vigorous cavitation which is initiated, the wool is held to the lower surface of the conveyor belt and is guided by the conveyor belt through the treatment liquid to the discharge suction drum.
  • the conveyor belt can be provided with chain lines which facilitate the immersion of the wool at the inlet.
  • a perforated chute is provided through which the liquid can be drawn in by the suction drum located at the bath outlet.
  • the treatment liquid can be returned to the treatment bath and a flow in the direction of material passage can be constantly maintained in the treatment bath.
  • the treatment bath or container of the present invention can also be provided with a suction hood containing a fan.
  • the suction hood provides for the collection of the evaporated solvent which can be transferred toa recovery plant through suitable pipes, not shown in the figure.
  • the apparatus of the present invention comprises a liquid container 1 which is provided with a perforated intermediate bottom 2 and with a perforated chute 3 at the inlet.
  • Raw wool 5 is fed to the apparatus by means of a conveyor belt 4 and then immersed in a hot'treatment liquid 15 by means of an impeller drum 6 and a conveyor belt 7.
  • the hot treatment medium advantageously is water which is maintained at a temperature higher than the boiling point of the solvent contained in the raw wool, thus efi'ecting evaporation of the solvent from the wool, but not so high as to cause evaporation of the water.
  • the solvent applied to the wool in the preceding solvent bath and still adhering to the wool is evaporated.
  • the vigorous cavitation which is thus produced forces the wool to the lower surface of the gas-permeable conveyor belt which in turn transports the wool through the bath towards the outlet of the container, and transfers the wool to a suction drum 8 subjected to a suction draft which is provided at the end of the container.
  • the suction draft of the suction drum forms an even wool fleece which is fed through a short chute 9 to a pair of rollers 10.
  • the short chute serves for safely sealing the treatment bath against the pair of rollers.
  • a suction drum In the suction drum one or several pumps ar arranged, and the liquid drawn in is led laterally out of the suction drum through a pressure channel 12 and is returned to the treatment bath preferably to the perforated chute at the inlet of the bath. It is also possible to return part or all of the treatment liquid into the treatment bath beneath the perforated intermediate bottom. Thus an upward flow is produced in the treatment bath which carries the wool particles which may have deposited on the intermediate bottom upward towards the suction drum. Thus, an automatic cleaning of the treatment bath is achieved.
  • a collecting hood 13 Above the container, a collecting hood 13 is provided for collecting the evaporated treatment liquid and/or solvent.
  • a fan 14 is disposed within the collecting hood and functions to return the gases drawn off to a recovery plant through suitable pipes, not shown. Number 11 in the drawing is a suction pump.
  • the conveyor belt prevents the treatment liquid, and especially the wool floating in the treatment liquid, from boiling up and rolling, and thus felting the wool is substantially eliminated. Therefore, because of proper guidance of the loose wool together with the formation of a fleece on the suction drum and uniform squeezing by the rollers, substantially complete removal of the solvent as well as a good and complete opening of the raw wool tufts can be achieved.
  • the treatment liquid can be heated to the treatment temperature either by the direct introduction of steam, or by indirect heating means, for example heating coils, which can be installed in the container to heat the treatment liquid to the desired treatment temperature.
  • the treating temperature can be maintained by a regulator which controls the feeding of the heating medium, for example, steam, but it is also possible to regulate the steam supply manually.
  • An apparatus for washing raw wool which comprises a liquid container, an endless belt conveying means disposed within said container, said conveying means being slightly declined toward the outlet of the container and being at least partially immersed in a treatment liquid in said container, an impeller drum disposed in said container at its inlet and next to the end of said conveying means such that the surfaces of said impeller drum and said conveying means form a feeding funnel for the wool, and a suction drum provided at the outlet of said container and next to the end of said conveying means to provide a continuing surface for the wool to the outlet of the liquid container.
  • a suction hood is provided above the container and is provided with a fan which transfers the gaseous solvent which has been drawn off to a recovery plant through suitable pipe means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
US596212A 1965-11-22 1966-11-22 Apparatus for rewashing raw wool Expired - Lifetime US3503229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA0050839 1965-11-22

Publications (1)

Publication Number Publication Date
US3503229A true US3503229A (en) 1970-03-31

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Application Number Title Priority Date Filing Date
US596212A Expired - Lifetime US3503229A (en) 1965-11-22 1966-11-22 Apparatus for rewashing raw wool

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US (1) US3503229A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE689635A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1510175A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1123109A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3905765A (en) * 1971-09-22 1975-09-16 Wira And Mather & Platt Ltd Steam treatment of fabrics

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US263728A (en) * 1882-09-05 sargent
US663452A (en) * 1900-04-14 1900-12-11 Emile Maertens Machine for washing, rinsing, or chemically treating wool.
US2442012A (en) * 1945-04-17 1948-05-25 Leonard Bryan Method of and apparatus for scouring wool
US2736632A (en) * 1954-02-09 1956-02-28 Blau Mfg Company Inc M Dry cleaning process
US3410119A (en) * 1964-11-21 1968-11-12 Fur Patentdienst Anstalt Apparatus for the wet-treatment of materials
US3440843A (en) * 1964-09-26 1969-04-29 Fur Patentdienst Anstalt Apparatus for treating loose fibrous material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US263728A (en) * 1882-09-05 sargent
US663452A (en) * 1900-04-14 1900-12-11 Emile Maertens Machine for washing, rinsing, or chemically treating wool.
US2442012A (en) * 1945-04-17 1948-05-25 Leonard Bryan Method of and apparatus for scouring wool
US2736632A (en) * 1954-02-09 1956-02-28 Blau Mfg Company Inc M Dry cleaning process
US3440843A (en) * 1964-09-26 1969-04-29 Fur Patentdienst Anstalt Apparatus for treating loose fibrous material
US3410119A (en) * 1964-11-21 1968-11-12 Fur Patentdienst Anstalt Apparatus for the wet-treatment of materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3905765A (en) * 1971-09-22 1975-09-16 Wira And Mather & Platt Ltd Steam treatment of fabrics

Also Published As

Publication number Publication date
DE1510175A1 (de) 1970-02-26
GB1123109A (en) 1968-08-14
BE689635A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1967-05-16

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