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EP0022035A1 - Verfahren und Vorrichtung zur Reinigung in einer Anlage zur Herstellung einer Fasermatte - Google Patents

Verfahren und Vorrichtung zur Reinigung in einer Anlage zur Herstellung einer Fasermatte Download PDF

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Publication number
EP0022035A1
EP0022035A1 EP80400998A EP80400998A EP0022035A1 EP 0022035 A1 EP0022035 A1 EP 0022035A1 EP 80400998 A EP80400998 A EP 80400998A EP 80400998 A EP80400998 A EP 80400998A EP 0022035 A1 EP0022035 A1 EP 0022035A1
Authority
EP
European Patent Office
Prior art keywords
venturi
enclosure
conveyor belt
boxes
walls
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
EP80400998A
Other languages
English (en)
French (fr)
Other versions
EP0022035B1 (de
Inventor
Jean Descolas
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.)
ABB Technology FLB AB
Original Assignee
UK Secretary of State for Defence
Flaekt AB
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 UK Secretary of State for Defence, Flaekt AB filed Critical UK Secretary of State for Defence
Publication of EP0022035A1 publication Critical patent/EP0022035A1/de
Application granted granted Critical
Publication of EP0022035B1 publication Critical patent/EP0022035B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/655—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions characterised by the apparatus for applying bonding agents
    • 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
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/54—Venturi scrubbers

Definitions

  • the invention generally relates to a method and a device for depolluting or cleaning and purifying gases loaded with fibers, dust and gaseous effluents containing polymerizable materials, in an installation for manufacturing a fiber mat, by example of mineral fibers such as glass wool or rock wool, or vegetable fibers such as flax fibers, wood fibers, or any other material.
  • mineral fibers such as glass wool or rock wool
  • vegetable fibers such as flax fibers, wood fibers, or any other material.
  • the mattresses of mineral or vegetable fibers are generally formed by projection of fibers, by means of a rotating die, on a conveyor belt contained in an elongated enclosure. A suction of air under the conveyor belt causes the fibers to settle on this belt, to form a mattress. At the same time as the fibers, a polymerizable binder is also sprayed onto the strip, to agglomerate the fibers into a mat.
  • the suction of air under the conveyor belt which is generally of the perforated type, is done by means of suction fans.
  • suction fans To prevent particles of polymerizable binder from settling on the walls of the enclosure or conduits located under the conveyor belt and connected to the fans, spray bars for spraying a high-pressure washing liquid, generally water, are provided under the conveyor belt.
  • a high-pressure washing liquid generally water
  • these measures are not sufficient, and that the polymerizable binder is deposited on the blades of the fan or fans, and solidifies there. This deposit causes a static and dynamic imbalance of the fan blades, which after a very short time can no longer function. It is then necessary to dismantle the fans and clean them with a chisel.
  • the object of the present invention is precisely to avoid these drawbacks of the prior art, and for this purpose it proposes a depollution process in an installation for manufacturing a mattress of fibers, such as glass or rock wool, which are projected or deposited with particles or droplets of polymerizable binder on a perforated conveyor belt, characterized in that it consists in providing, under said conveyor belt, a series of means for extracting air loaded with fiber dust and particles or droplets of binder, to regulate the aspiration of these means as a function of their location under the conveyor belt so as to obtain on said band the formation of a mattress of fibers of constant thickness and / or density, to be associated with these suction means means for spraying a washing liquid at low pressure, such as water, so collecting and collecting dust and particles or droplets of binder in suspension in the air and then treating this washing liquid.
  • a washing liquid at low pressure such as water
  • this method consists in having, under the conveyor belt, series of Venturi with adjustable section neck, opening into a duct connected to suction means, and spraying sprays of liquid washing at low pressure, such as water, arranged on the one hand at the inlet of the Venturi, and on the other hand downstream of their outlet, to form a runoff of liquid on all the walls of the conduits or means dust collection on which dust and the binder are likely to settle.
  • low pressure such as water
  • the invention also provides a depollution device in an installation for manufacturing a fiber mat, enabling the method according to the invention to be carried out, characterized in that it comprises, under the conveyor belt for forming the fiber mat , an enclosure whose upper part is closed by the conveyor belt and which contains a series of longitudinally aligned boxes, forming Venturi with adjustable section neck, arranged under the conveyor belt, spraying sprays of washing liquid at low pressure such as water, to form a runoff of liquid on the walls of the enclosure and of the caissons, the outlet of said enclosure being connected to air suction means, and adjustment means of the Venturi pass section.
  • An installation for manufacturing a mattress of fibers generally comprises, very schematically, a forming head 10 such as a rotary die, which projects fibers 11 on a conveyor belt 12 of the perforated type, on which a mattress 13 of fibers is formed.
  • a polymerizable binder is also projected as indicated by the arrows 14, on the conveyor belt 12 with the fibers 11, to form the mattress 13.
  • the enclosure containing the rotary die 10 and the means for spraying binder has been shown very schematically at 15, and includes air inlets.
  • the air from the enclosure 15 is sucked through the conveyor belt 12 by suction fans, not shown, mounted at the end of the duct 16.
  • This suction which takes place over a certain length of conveyor belt 12, makes it possible to attract the fibers and the binder on the belt 12 to form the mattress 13.
  • the invention therefore proposes a series of means which will be described in detail in the following.
  • the invention firstly provides booms 17 for spraying a low-pressure washing liquid, such as water, under the conveyor belt 12.
  • the booms 17 extend longitudinally and horizontally under this belt, and they are provided with spray nozzles 18, surmounted by cups 19 and 20, provided at two different heights.
  • the nozzles 18 have a relatively large diameter, so that they cannot become clogged. They are also not subject to very rapid erosion, the liquid circulating in the pipes 17 being at low pressure.
  • the liquid leaving the nozzles 18 strikes the domes 19 and 20, and is sprayed on the walls of an enclosure 21 situated under the conveyor belt 12.
  • This enclosure 21 is provided with inspection doors 22, allowing the inspection and maintenance of the water spraying systems 17, 18, 19 and 20.
  • a central wall 23 is removably attached to a rod extending just under the conveyor belt 12.
  • Each box 25 comprises two Venturi 26 which are transversely juxtaposed in the box.
  • Each V-shaped Venturi 26 is of elongated longitudinal shape, its neck 27 being constituted by an elongated rectangular slot.
  • the section of the neck 27 is adjustable, by means of a plate 28 which is slidably mounted between two guide plates 29 of the box and the internal end of which more or less closes the slot constituting the neck 27 of the Venturi.
  • Each box 25 is mounted vertically movable, in the enclosure 24, between an upper service position which is that shown in FIG. 2, and a lower position, not shown, in which the box 25 is brought opposite a visit door 32 of the enclosure 24. In this lower position, the box 25 can be removed from the enclosure 24, to be cleaned or replaced.
  • Each box 25 can be supported by a rigid frame connected to handling cables 33 passing over pulleys 34 and arriving at winches 35, or else each box 25 can itself be directly connected to cables 33.
  • a central wall 36 similar to the above-mentioned removable central wall 23, is hung under each box 36.
  • the spoon-shaped part 31 placed at the outlet of the neck 27 of each Venturi 26, makes it possible to retransform by shock, the water mist resulting from atomization, in large droplets.
  • the mixture of liquid and air leaving the Venturi 26 is guided, by the parts 31, on the one hand on some of the internal walls of the enclosure 24, and on the other hand on one face of the central wall 36.
  • spraying ramps for washing liquid at low pressure, shown at 37, are provided on the other walls of the enclosure 24, to prevent them from depositing and sticking of dust and binder.
  • the washing liquid laden with dust and binder is treated, in a conventional manner, for the separation of dust and binders, and is then advantageously recycled in the spraying booms 17 and 37.
  • each box 25 can comprise several Venturi transversely juxtaposed, their number not necessarily being two as in the example shown in FIG. 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Paper (AREA)
EP80400998A 1979-07-02 1980-07-01 Verfahren und Vorrichtung zur Reinigung in einer Anlage zur Herstellung einer Fasermatte Expired EP0022035B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7917133 1979-07-02
FR7917133A FR2460360A1 (fr) 1979-07-02 1979-07-02 Procede et dispositif de depollution dans une installation de fabrication d'un matelas de fibres

Publications (2)

Publication Number Publication Date
EP0022035A1 true EP0022035A1 (de) 1981-01-07
EP0022035B1 EP0022035B1 (de) 1983-12-07

Family

ID=9227390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400998A Expired EP0022035B1 (de) 1979-07-02 1980-07-01 Verfahren und Vorrichtung zur Reinigung in einer Anlage zur Herstellung einer Fasermatte

Country Status (4)

Country Link
US (1) US4298367A (de)
EP (1) EP0022035B1 (de)
DE (1) DE3065822D1 (de)
FR (1) FR2460360A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4826514A (en) * 1987-06-23 1989-05-02 Griffis Steven C Apparatus for dampening hazardous material
US4786296A (en) * 1987-06-23 1988-11-22 Griffis Steven C Apparatus for use in asbestos removal
JP2578901B2 (ja) * 1988-04-21 1997-02-05 株式会社大氣社 遠心分離型塗料ミスト含有気体浄化装置
US5360371A (en) * 1989-07-18 1994-11-01 Peter James Coffey Material handling apparatus and method
KR100419415B1 (ko) * 2001-10-22 2004-02-19 삼성전자주식회사 광섬유 제조장치의 드로우타워 차단도어

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2247346A1 (de) * 1973-10-10 1975-05-09 Saint Gobain
FR2294138A1 (fr) * 1974-12-12 1976-07-09 Owens Corning Fiberglass Corp Procede de production de laine de verre
FR2318121A1 (fr) * 1975-02-10 1977-02-11 Saint Gobain Perfectionnement a la fabrication de nappes ou matelas de fibres de matiere thermoplastique, telle que le verre
FR2368445A1 (fr) * 1976-10-22 1978-05-19 Saint Gobain Regulation des installations de fibrage avec traitement des effluents

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2337983A (en) * 1941-05-13 1943-12-28 Ernest F Fisher Spray booth
US3795093A (en) * 1972-04-27 1974-03-05 Svenska Flaektfabriken Ab Apparatus for cleaning the air from a spray painting chamber
US3881898A (en) * 1973-01-18 1975-05-06 Lodge Cottrell Ltd Gas treatment
US4105424A (en) * 1973-03-30 1978-08-08 Saint-Gobain Industries Method and apparatus for suppression of pollution in mineral fiber manufacture
US4239512A (en) * 1977-07-21 1980-12-16 Binks Manufacturing Company Air washer particularly for paint spray booths

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2247346A1 (de) * 1973-10-10 1975-05-09 Saint Gobain
FR2294138A1 (fr) * 1974-12-12 1976-07-09 Owens Corning Fiberglass Corp Procede de production de laine de verre
FR2318121A1 (fr) * 1975-02-10 1977-02-11 Saint Gobain Perfectionnement a la fabrication de nappes ou matelas de fibres de matiere thermoplastique, telle que le verre
FR2368445A1 (fr) * 1976-10-22 1978-05-19 Saint Gobain Regulation des installations de fibrage avec traitement des effluents

Also Published As

Publication number Publication date
EP0022035B1 (de) 1983-12-07
US4298367A (en) 1981-11-03
DE3065822D1 (en) 1984-01-12
FR2460360B1 (de) 1983-08-19
FR2460360A1 (fr) 1981-01-23

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