SE203933C1

SE203933C1 -

Info

Publication number: SE203933C1
Authority: SE
Publication date: 1965-01-01

Description

Uppfinnare: A R Morrison Prioritet begdrd (ran den 23 april 1956 (USA) Foreliggande uppfinning hdnfor sig till en anordning f8r att framstdlla med bindemedel belagda fibrer av ett genom varme mjukbart material, sarskilt fibrer framstallda av mineraliska material, sasom gins, slagg, smaltbart berg och andra i naturen forekommande material. Fiberframstdllningsanordningen enligt foreliggande uppfinning omfattar ett forrad for small material med anordning fOr utmatning av en strom av det smalta materialet, en roterbar spinnare, som är anordnad att mottaga strommen av smalt material och omfattar ett perforerat band, som bildar spinnarens omkrets, sà att vid spinnarens rotation det smalta materialet under inverkan av centrifugalkrafter passerar genom det perforerade bandet i utatriktade banor i form av primara fibrer, en ringformig brannare anordnad omedelbart omkring spinnaren for uppvarmning av det perforerade bandet och omradet omkring detsamma, en ringformig blasanordning anbragt koncentriskt omkring brannaren och forsedd med en ringformig oppning for utmatning av en materialet i primarfibrerna utdragande strale. Inventor: AR Morrison Priority Required (April 23, 1956 (USA)) The present invention relates to an apparatus for producing binder-coated fibers from a heat-softenable material, in particular fibers made from mineral materials such as gin, slag, fusible rock. The fiber producing apparatus according to the present invention comprises a pre-lined material with a device for discharging a stream of the narrow material, a rotatable spinner, which is arranged to receive the stream of narrow material and comprises a perforated belt, which forms the circumference of the spinner, so that during the rotation of the spinner the narrow material under the influence of centrifugal forces passes through the perforated belt in unidirectional paths in the form of primary fibers, an annular burner arranged immediately around the spinner for heating the perforated belt and the area around it, an annular bladder placed concentrate risk around the burner and provided with an annular opening for discharging a beam extending from the material in the primary fibers.

Det har varit tidigare kant att i anordningar for framstallning av fibrer av genom varme mjukbart material begagna roterbara spinnare med periferiella hal, ur vilka materialet slungas ut i form av tunna materialstrommar, och att hdrvid verkstalla den erforderliga upphettningen av materialet och dess utdragning till fibrer medelst heta gaser, som stromma ut ur en runt omkring spinnaren anordnad fOr- brannings- och blasanordning, se den tyska patentskriften 812 452. It has been previously possible to use rotatable spinners with peripheral slides used in devices for producing fibers from heat-softenable material, from which the material is thrown out in the form of thin material drums, and thereby to effect the required heating of the material and its extraction into fibers by hot gases flowing out of a combustion and blowing device arranged around the spinner, see German Patent Specification 812 452.

Dupl. kl. 32 a: 37/04 Vid andra Uri& forfaranden och anord7 ningar for fiberutdragning medelst gasbldstrar eller -str8mmar (se t. ex. brittiska patentskriften 706 304 och amerikanska patentskrifterna 1 656 828, 2 018 478, 2 199 087 och 2 315 735) har man foreslagit att anbringa bindemedel pa fibrerna och att f8r fordelning av bindemedlet, innan det avsattes ph fibrerna, utnyttja en separat gasblaster eller ocksâ den for fiberutdragningen anvdnda gasstrommen, varvid bindemedlet i hada fallen kan inforas i denna gasstrom och av denna transporteras till fibrerna. Kven forslaget enligt foreliggande uppfinning bygger generellt pa denna princip, men for att sakerstalla en fullt likformig fOrdelning av bindemedlet vid de mycket hOga framstallningshastigheter, nar materialet utslungas ur en rotor och i omedelbar anslutning dartill utdrages medelst gasbldstrar, kraves sarskilt effektiva fordelningsanordningar for bindemedlet. Det är detta behov, som skall tillgodoses medelst anordningen enligt uppfinningen. Dupl. at 32 a: 37/04 In other Uri & processes and devices for fiber extraction by means of gas cylinders or streams (see, for example, British Pat. Nos. 706,304 and U.S. Pat. Nos. 1,656,828, 2,018,478, 2,199,087 and 2,315,735). It has been proposed to apply binder to the fibers and to use a separate gas blaster or also the gas stream used for fiber extraction before distributing the binder, the binder can in any case be introduced into this gas stream and transported by it to the fibers. Although the proposal according to the present invention is generally based on this principle, but in order to ensure a completely uniform distribution of the binder at the very high production speeds, when the material is ejected from a rotor and immediately connected thereto by gas blisters, particularly effective distribution devices for the binder are required. It is this need which is to be met by the device according to the invention.

Andamalet med anordningen enligt foreliggande uppfinning är saledes att mojliggiira en mycket snabb och effektiv framstdilning av bindemedelsbelagda fibrer under utnyttjande av en roterbar spinnare av ovannamnda typ, och att hdrvid ge anordningen en sadan konstruktion, att bindemedlet mycket likformigt fordelas pa det oftast med utomordentligt hog hastighet ur spinnaren utslungade och av gasblastern utdragna fibermateriaIet. For detta andamal foreslas enligt uppfinningen en konstruktion, vid vilken runt den roterbara spinnaren, inuti den ringformiga Opp- 2 ningen fran blasanordningen, aro anordnade ett flertal fOrdelare f8r bindemedlet, var och en uppbyggd av tva koncentriska ror, av vilka det inre leder bindemedlet och det yttre en gas, vilken tjanar sasom dispersionsmedel och barare fijr bindemedlet. The object of the device according to the present invention is thus to enable a very fast and efficient production of binder-coated fibers using a rotatable spinner of the above-mentioned type, and to thereby give the device such a construction that the binder is distributed very uniformly on it usually at extremely high speed. the fibrous material thrown out of the spinner and pulled out of the gas blaster. To this end, according to the invention, a construction is proposed in which around the rotatable spinner, inside the annular opening of the blowing device, a plurality of distributors for the binder are arranged, each of which is built up of two concentric tubes, of which the inner leads the binder and the exterior of a gas, which serves as a dispersant and carrier for the binder.

Medelst denna anordning kan astadkomInas, att bindemedlet, exempelvis en bindemedelssuspension, forst fOrstoftas genom gasen frail det yttre roret och sedan dispergeras vi-dare av blastern fran blasanordningens Oppning. Bindemedlets fordelning kan salunda g8- ras utomordentligt effektiv och likformig genom att bindemedlet underkastas olika successiva fordelningssteg, innan det kommer beroring med fibermaterialet, I. ex. 1. suspendering i vatska, 2. fordelning medelst gas Iran det yttre roret inuti blasanordningens Oppning, 3. fordelning medelst utdragningsluften (eller ev. annan blaster). Denna Arestegsfordelninp är mycket fordelaktig. Aven om bindemedlet fran borjan icke är suspenderad i en vatska erhalles en effektiv fordelning. By means of this device it can be ensured that the binder, for example a binder suspension, is first atomized by the gas from the outer tube and then further dispersed by the blaster from the opening of the blower device. The distribution of the binder can thus be made extremely efficient and uniform in that the binder is subjected to various successive distribution steps, before there is contact with the fibrous material, I. 1. suspension in liquid, 2. distribution by means of gas Iran the outer rudder inside the opening of the blower device, 3. distribution by means of the extraction air (or possibly another blaster). This Aresteg benefits advantage is very advantageous. Even if the binder is not initially suspended in a liquid, an effective distribution is obtained.

Uppfinningen beskrives narmare i det efterfoljande med hanvisning till bifogade ritningar. The invention is described in more detail in the following with reference to the accompanying drawings.

Pa ritningarna visar fig. 1 en sidovy av en del av en fiberframstallningsanlaggning, som är forsedd med anordningen enligt uppfinningen, varvid vissa partier visas i sektion. Fig. 2 är en partiell vy underifran av anordningen med nor for fordelning av bindemedel insatta i den ringformiga blasanordningen, fig. 3 visar fordelarroren i detalj, med vissa partier av det yttre roret bortbrutna och fig. 4 är en tvarsektion genom roren i fig. 3. .1 fig. 1 visas en spinnare 17 med en. yttre omkretsvagg bildad av ett perforerat band 18, samt ringformiga brannar- och gasutblasningsanordningar, som aro belagna koncentriskt omkring och nagot ovanfor spinnaren 17. De omfatta ett blasaggregat 24, som bestar av en i sektioner uppbyggd, ringformig brannare 25, som är anordnad koncentriskt i en ringformig blasanordning 26 for utdragningsblastern. Brannaren är forsedd med inlopp 27 for bransIe-luftblandning och munstycken 28, frail vilka den brinnande blandningen av bransle och luft strommar ut. Flamman brinner utanfor brannaren och uppvarmer denna zon kring spinnarens 17 omkrets. Blasanordningen är forsedd med inlopp 29 for tillforsel av luft eller dylikt och med en ringformig oppning eller slits 30 fOr att utmata blastergasen under tryck. I denna slits aro koncentriska ror 53, 54 insatta, se aven fig. 2-4, for tilIforsel och fordelning av ett bindemedel, t. ex. ett fenolharts Brannare- och blasaggregaten aro, om detta anses onskvart, atskilda av en vattenmantel. Genom en dylik mantel blir det mojligt att reglera temperaturen pa lampligt salt. In the drawings, Fig. 1 shows a side view of a part of a fiber manufacturing plant, which is provided with the device according to the invention, certain portions being shown in section. Fig. 2 is a partial bottom view of the device with nor for distributing adhesives inserted in the annular blowing device, Fig. 3 shows the distributor tube in detail, with certain parts of the outer tube broken away and Fig. 4 is a cross section through the tubes in fig. 3. .1 Fig. 1 shows a spinner 17 with a. outer circumferential cradle formed by a perforated band 18, and annular burner and gas blowout devices, which are coated concentrically around and slightly above the spinner 17. They comprise a blowout assembly 24, which consists of a sectional annular burner 25, which is arranged concentrically in an annular blowing device 26 for the extraction blaster. The burner is provided with inlet 27 for fuel-air mixture and nozzles 28, from which the burning mixture of fuel and air flows out. The flame burns outside the burner and heats this zone around the circumference of the spinner 17. The blowing device is provided with inlet 29 for supply of air or the like and with an annular opening or slot 30 for discharging the blaster gas under pressure. In this slot concentric tubes 53, 54 are inserted, see also Figs. 2-4, for supply and distribution of a binder, e.g. a phenolic resin The burner and blower units are, if considered unobtrusive, separated by a water jacket. Through such a jacket it becomes possible to regulate the temperature of suitable salt.

Nar den i fig. 1 visade apparaten an i funktion, rinner smalt material, t. ex. glas, i form av strOmmar ned i en i spinnarens 17 inre anordnad ringformig skal 48. Spinnaren roteras medelst en elektrisk motor (icke visad), och genom centrifugalkraftens inverkan slungas det smalta materialet uttit genom skalens 48 perforerade vagg 38, och darifran vidare till spinnarens 17 perforerade yttre omkretsvagg 18, varefter glaset genom denna vaggs hal 40 slungas ut i form av strommar 41 av langstrackta smalta kroppar eller primarfibrer, vilka darefter utdragas av stralen Iran biasanordningen 26 till langa fibrer med fin diameter. When the apparatus shown in Fig. 1 is in operation, narrow material flows, e.g. glass, in the form of currents into an annular shell 48. arranged in the interior of the spinner 17. The spinner is rotated by an electric motor (not shown), and by the action of the centrifugal force the narrow material ejected through the perforated rock 38 of the shell 48 is thrown, and thence on to the spinner. 17 perforated outer circumferential cradle 18, after which the glass through the cradle 40 of this cradle is thrown out in the form of streams 41 of elongated narrow bodies or primary fibers, which are then pulled out by the jet Iran bias device 26 into long fibers of fine diameter.

Flamman fran bra.nnarna uppvarmer denna zon omkring spinnarens periferi och hjalper till att halla spinnarens yttre omkrets 18 vid onskad arbetstemperatur. Denna flamma behover icke ha mycket hog hastighet, eftersom den storsta delen av utdragningskraften lamnas av blasanordningarna 26. Flamman kan ocksa ytterligare varma de langstrackta smalta kropparna fran spinnaren for att astadkomma ett material med mindre viskositet for fiberbildning. Blastern frau blasanordningen bestar av luft, anga eller annan lamplig gas. For att lainna ett belysande exempel, beslcrives luft sasom den blastergas, som utmatas fran utloppen i blasaggregatet. Genom inloppen 29 inford luft stroramar ut fran blasanordningen 26; harunder upptager luften bindemedel fran de nedan narmare beskrivna bindemedelsfordelarna, och bindemedlet fOljer med luftstrommen nedat i form av mycket sma finfordelade partiklar. The flame from the wells heats this zone around the periphery of the spinner and helps to keep the outer circumference 18 of the spinner at the desired working temperature. This flame does not need to have a very high speed, since most of the pulling force is left by the blowing devices 26. The flame can also further heat the elongate narrow bodies from the spinner to provide a material with less viscosity for fiber formation. The blaster from the blower device consists of air, steam or other suitable gas. To give an illustrative example, air is described as the blaster gas discharged from the outlets of the blower assembly. Through the inlets 29, air is introduced from the blowing device 26; below, the air absorbs binders from the binder distributors described in more detail below, and the binder follows the air stream downwards in the form of very small comminuted particles.

Bindemedelsfordelarna bestar av de koncentriska roren 53, 54 i blasanordningens Oppning 30. Det inre roret 53 i vane fOrdelare är avsett for bindemedel, t. ex. i form av en vattendispersion, och det yttre roret 54 for luft, vilken finfordelar vattendispersionen av bindemedel Iran roret 53. De hindemedelspartiklar, som brutits upp och spritts av luften fran roret 54, spridas vidare av blasterluften fran blasanordningens 26 Oppning 30, van i de koncentriska luft- och bindemedelsrliren 53, 51 aro placerade. Fordelen med roren 53, 54 är i framsta rummet, att de astadkomma en synnerligen jamn fordelning av bindemedlet pa fibrerna, trots att dessa utslungas och utdragas med mycket hog hastighet. En fordel harvid aven, att bindemedelspartiklarna paforas fibrerna i praktiskt taget samma ogonNick, som de framstallas, hi, a. emedan det är lattast att hopfora bindemedelsmaterial med glasytor, om de sistnamnda aro nybildade och salunda alldeles farska och fria frail 3 fororeningar. Den intima blandningen av fibrer och bindemedel, innan de form uppsamlats, bidrager ytterligare till en jamn fordelning av bindemedel i hela fiberbunten. The binder distributors consist of the concentric tubes 53, 54 in the opening 30 of the blowing device. The inner tube 53 in the usual distributor is intended for binders, e.g. in the form of an aqueous dispersion, and the outer tube 54 for air, which atomizes the aqueous dispersion of binder Iran the tube 53. The particulate particles, which are broken up and dispersed by the air from the tube 54, are further dispersed by the blaster air from the blowing device 26. concentric air and binder lines 53, 51 are located. The advantage of the tubes 53, 54 is in the first place that they achieve an extremely even distribution of the binder on the fibers, even though these are thrown out and pulled out at a very high speed. It is also an advantage that the binder particles are applied to the fibers in substantially the same manner as they are produced, i.e., since it is easiest to combine binder materials with glass surfaces, if the latter are newly formed and thus completely fresh and free frail 3 impurities. The intimate mixture of fibers and binders, before the form has been collected, further contributes to an even distribution of binders throughout the fiber bundle.

Claims

Claim: An apparatus for producing binder-coated fibers of hot soft-hard material, comprising a Monad for narrow material with a device for discharging a shorn of the narrow material, a rotatable spinner (17), which is arranged to receive the stream of narrow material and comprises a perforated strip (18), which forms the circumference of the spinner (17), so that during the rotation of the spinner the narrow material under the influence of centrifugal forces passes through the perforated strip (18) in unidirectional paths in the form of primary fibers, an annular burner (25) disposed immediately around the spinner (17) for heating the perforated belt (18) and the area around it, an annular blowing device (26) arranged concentrically around the burner (25) and provided with a. annular opening for discharging a jet extending a material in the primary fibers, characterized in that around the rotatable spinner (17), inside the annular opening (30) from the blowing device, a plurality of distributors (53, 54) for the binder are arranged, each composed of two concentric tubes, of which the inner (53) conducts the binder and the outer (54) a gas, which serves as a dispersant and carrier for the binder. Cited publications: U.S. Patent Nos. 706304; Germany 812452; USA 1,656,828, 2,018,478, 2,199,087, 2,315,735.