SE123740C1

SE123740C1 -

Info

Publication number: SE123740C1
Authority: SE
Publication date: 1948-01-01

Description

Uppfinnare: C. G. Munters. Inventor: C. G. Munters.

Foreliggande uppfinning hanfor sig till en anlaggning for framstallning av impregnerade isolationsplattor, sarskilt av flerskiktstyp med genomgaende inre kanaler, foretradesvis av fibermaterial. Uppfinningen avser att astadkomma en anlaggning av denna art, som mojliggor en hnpregnering av isolationsplattorna, sâ att de bliva fuktighetsbestandiga resp. erhalla stor stadga under samtidigt hansynstagande till de faktorer, som inverka pa. en varmeisolations effektivitet. Uppfinningen kanneteeknas vasentligen darav, att anlaggningen omfattar ett magasin, innehallande en losning av impregneringsmedel i yid vanlig tempera-fur flytande losningsmedel, saint en kammare, i vilken. impregneringen kan aga rum och som är genom ledningar forbunden med magasinet for losningens oyerfOrande dem emellan samt vilken kammare har en form medgivande ett insattande av ett flertal plattor i kammaren pa s'a salt att i resp. mellan desamma befintliga kanaler bilda oppna sammanhangande passager tillsammans med en till kammaren ansluten cirkulationskanal, som innehaller en flakt och ett varmeelement och som kommunicerar med en eller Hera kondensorer f Sr avskiljande av namnda 18sningsmedel i vatskeform efter verkstalld impregnering, sedan detsamma upptagits i angform av i cirkulationskanalen strommande varm gas, medan en avvagd mangd impregneringsmedel kvarbliver i plattorna. Till cirkulationskanalen ãr lampligen ansluten en tryckutjamningsledning, som mynnar utanfor kanalen ifraga och vilken har minst en kondensor for avskiljande och atervinning av 18sningsmedieangor, som afolja genom ledningen frau cirkulationskarialen avgaende gas. The present invention relates to a plant for the production of impregnated insulation boards, in particular of the multilayer type with continuous inner channels, preferably of fibrous material. The invention intends to provide an installation of this kind, which enables an impregnation of the insulation plates, so that they become moisture-resistant resp. obtain a large charter while at the same time taking into account the factors that affect. the efficiency of a thermal insulation. The invention can be essentially characterized in that the plant comprises a magazine, containing a solution of impregnating agent in a common temperature-liquid solvent, such as a chamber, in which. the impregnation can take place and which is connected by wires to the magazine for transferring the solution between them and which chamber has a shape allowing an insertion of a plurality of plates in the chamber on such a salt that in resp. between these existing ducts form open continuous passages together with a circulation duct connected to the chamber, which contains a flake and a heating element and which communicates with one or more condensers for separating said solvents in liquid form after applied impregnation, after the same has been taken up in the circulating duct flowing hot gas, while a balanced amount of impregnating agent remains in the plates. A pressure equalization line is suitably connected to the circulation duct, which opens outside the duct in question and which has at least one condenser for separating and recovering vapor medium vapors which follow through the line from the gas emitting from the circulation material.

Uppfinningen skall narmare beskrivas under hanvisning till a bifogade ritning visade utforingsexempel, varvid aven ytterligare uppfinningen kannetecknande egenskaper skola angivas. The invention will be described in more detail with reference to the exemplary embodiment shown in the accompanying drawing, in which case further characteristics of the invention may also be stated.

I fig. 1 visas en perspektivisk vy av en flerskiktsisolation i form av en platta eller ett s. k. paket. I fig. 2 visas en korg, avsedd for doppning av isolationsmaterialet i ett impregneringsbad. I fig. 3 visas i sidoprojektion och I nagot storre skala ett parti av en aystandshilllare, avsedd att anbringas mellan isolationsplattorna i den namnda korgen, och i fig. 4 en sektion efter linjeni fig. 3 i yt- terligare forstorad skala. I fig. 5 visas i mer eller mindre schematisk frarnstallning och del-iris sektion en enligt uppfinningen utfOrd anlaggning. Fig. 1 shows a perspective view of a multilayer insulation in the form of a plate or a so-called package. Fig. 2 shows a basket, intended for dipping the insulating material in an impregnation bath. Fig. 3 shows in side projection and on a somewhat larger scale a portion of a stand shelf, intended to be placed between the insulation plates in the said basket, and in Fig. 4 a section along the line in Fig. 3 on a further enlarged scale. Fig. 5 shows in a more or less schematic representation and sub-iris section a plant according to the invention.

Den i fig. 1 visade flerskiktsisolationen be-star lampligen av ett flertal vaxelvis plana och veckade eller korrugerade skikt 1, 2, vilka, innan de impregneras medelst anordningen. enligt uppfinningen, foretradesvis forenas med varandra medelst ett lampligt bindemedel, sasom vattenglas. Bindemedlet kan darvid pastrykas Over veckens hela langd, varvid en relalivt stark hopbindning av de olika skikten uppnas. I de fiesta fall am det emellertid tillraekligt att endast punktvis hafta ihop de olika skikten, sasom antytts vid 3 i fig. 1. For genomfOrande av impregneringen enligt uppfinningen anbringas sedan lampligen ett flertal isolationsplattor 8 (fig. 2) i en platkorg 4. Denna korg kan besta av tre sidoyaggar 5, vilka pa insidan aro bekladda med korrugerad plat 6. Sistnamnda plat har till uppgift att underlatta impregneringsmedlets intrangande mellan isolationsplattorna och korgens vaggar saint att forhindra, att plattorna fastna vid dessa vaggar. I stallet for att korrugera platarna 6 kunna desamma f Orses med upphojningar resp. utstansade flikar, vilka medgiva en mera punktartad beroring med plattorna. Isolationsplattorna 8 insattas I ett eller flera skikt i korgen 4, sa att de utfylla dennas hela tvarsektion (for vinnande av tydlighet har i fig, 2 endast visats nagra isolationsplattor). Det am av vikt, att isolationsmaterialet alltid placeras sa, att kanalerna mellan pappersbladen overallt lamna genomgaende oppna passager i vertikal led, d. v. s. i vinkel mot korgens botten, som kan besta av ett galler 7 av platremsor. Dessa remsor aro stallda pa kant samt aro av lamplig 2— 1.23740 — hojd i vertikal led, sit att avrinningen av impregneringsmedel efter doppningen fran plattornas nedre delar underlattas. Vid det visade utforingsexemplet arc samtliga veck i de olika bladskikten 2 parallella med varandra, tarvid de anbringas med yeekkanalerna i rat vinkel mot bottengallret 7. Mellon varje skikt resp. ovanpa det tiversta skiktet av platter 8 i korgen 4 kan ett platgaller 9 anbringas, vilket har till andarnal att belasta isolationsmaterialet och liana detsamma I raft litge under impregneringen. Vidare kunna arstandshallare 50 vara anordnade mellan de olika Isolationsplattorna 8, vilka avstandshallare lampligen utgoras av mellan en ram 51 forlopande platribbor 52 (fig. 3 och 4), forsedda med at bada sidor utstansade och utatbojda fIikar 53, mot vilka plattorna punktvis anligga och -vilka forhindra kastning resp. skevning av plattorna under behandlingen. The multilayer insulation shown in Fig. 1 suitably consists of a plurality of alternately flat and pleated or corrugated layers 1, 2, which, before being impregnated by means of the device. according to the invention, are preferably combined with each other by means of a suitable adhesive, such as water glass. The binder can then be paste-pressed over the entire length of the fold, whereby a relatively strong bonding of the various layers is achieved. In most cases, however, it is sufficient to glue the different layers together only point by point, as indicated in Fig. 1. basket may consist of three side grooves 5, which on the inside are covered with corrugated plate 6. The latter plate has the task of facilitating the penetration of the impregnating agent between the insulation plates and the cradles of the basket, in order to prevent the plates from sticking to these cradles. Instead of corrugating the plates 6, the same f Orses with elevations resp. punched tabs, which allow a more punctual contact with the plates. The insulation plates 8 are inserted in one or more layers in the basket 4, so that they fill its entire cross section (for the sake of clarity, only some insulation plates have been shown in Fig. 2). It is important that the insulating material is always placed so that the channels between the sheets of paper everywhere leave continuous open passages in vertical direction, i.e. at an angle to the bottom of the basket, which can consist of a grid 7 of plate strips. These strips are placed on the edge and are of suitable height in the vertical direction, so that the drainage of impregnating agent after dipping from the lower parts of the plates is facilitated. In the embodiment shown, all the folds in the different leaf layers 2 are parallel to each other, in which case they are applied with the eye channels at right angles to the bottom grid 7. Between each layer resp. on top of the tenth layer of plates 8 in the basket 4, a plate grid 9 can be applied, which has the effect of loading the insulating material and lining it in the same way during the impregnation. Furthermore, stand holders 50 can be arranged between the various insulation plates 8, which spacer holders are constituted by plate ribs 52 extending between a frame 51 (Figs. 3 and 4), provided with both sides punched and bent-out flaps 53, against which the plates abut pointwise and - which prevent throwing resp. skew of the plates during the treatment.

Den pa ovan beskrivet satt fyllda korgen 4, vilken fir forsedd med en bygel 10, transporteras darefter exempelvis medelst en telleranordning 12 till en impregneringskammare 13, i vilken korgen infores genom en Oppning, som under impregneringen fir tillsluten medelst ett lock 14. Kammaren 13 liar ungefar samma rektangulara tvarsektion som korgen 4 och vidare kunna anordningar, sasom banister 11 for korgen, vara forutsedda, vilka forebygga uppkomsten av genomgitende pas-sager mellan korgens och kammarens vaggar. en blandningsbehallare 15, normalt tillsluten av ett lock 15a, beredes en blandning av impregnerings- och Iosningsmedel, exempelvis relativt hardsmalt asfalt och trikloretylen. En lämplig mfingd av denna blandning tillfores ett forradsmagasin 18 genom en ledning 17, fOrsedd med ventilanordning 16. Alagasinet 18 kart vara utrustat med en uppvfirmningsanordning 47, till exempel i form av en rorslinga for uppvarnming av den vatskeformiga blandningen. Undre delen av magasinet 18 star genom en ledning 19, i vilken fir anbragt en pump samt ett ventilorgan 21, i forbindelse med den undre delen av kammaren 13. Da pnrnpen 20 forsattes i funktion och ventilen 21 Or oppen, pumpas vfitskan av impregnetings- °eh losningsmedel upp frail ledningen 19 och magasinet 18 in i kammaren 13 till en niva 22, som ligger ovanfor korgen 4. Samtidigt sjunker vatskenivan i magasinet 18, t. ex. frail en nil/ 23, som ligger under kammarens 13 botten, till en niva 24. Till kamMarert 13 at ansluten den ovre delen av en braddavloppsledning 25, vars undre del mynnar i magasinet 18 och vilken hindrar vatskan aft stiga for Mgt i kammaren 13. Genom den-ha. ledning sker aven en hug- resp. gasoverstromning mellan kammaren och magasinet under itnpregnetingsvatskans overstromning Iran del ena Varlet till det andra. Kammarens 13 owe och nedre delar sta i forbindelse med en cirkulationskanal 26, vilken avenledes kom mer att till en del fyIlas med vatska, sasom framgar av fig. 5. Tack vare korgens 4 konstruktion och den ovan beskrivna anordningen av isolationsplattornas kanaler hanger den vatskeformiga blandningen Hit in i isolationsmaterialet. Sedan isolationsmaterialet impregnerats i onskad grad far den i kammaren 13 resp. cirkulationsledningen 26 staende vfitskan ftterrinna till magasinet 18. The basket 4 filled as described above, which is provided with a bracket 10, is then transported, for example by means of a counter device 12, to an impregnation chamber 13, in which the basket is inserted through an opening which during closure is closed by means of a lid 14. The chamber 13 approximately the same rectangular cross-section as the basket 4 and furthermore devices such as banisters 11 for the basket can be provided, which prevent the occurrence of penetrating passages between the cradles of the basket and the chamber. a mixing container 15, normally closed by a lid 15a, is prepared with a mixture of impregnating and dissolving agents, for example relatively hard-narrow asphalt and trichlorethylene. A suitable amount of this mixture is supplied to a storage magazine 18 through a line 17, provided with a valve device 16. The magazine 18 may be equipped with a heating device 47, for example in the form of a tube loop for heating the liquid mixture. The lower part of the magazine 18 stands through a line 19, in which a pump and a valve member 21 are arranged, in connection with the lower part of the chamber 13. When the opening 20 is kept in operation and the valve 21 is open, the fluid is pumped by impregnation. a solvent up frail the line 19 and the magazine 18 into the chamber 13 to a level 22, which lies above the basket 4. At the same time, the water level in the magazine 18 drops, e.g. frail a nil / 23, which lies below the bottom of the chamber 13, to a level 24. To chamber 13 is connected the upper part of a brad drain line 25, the lower part of which opens into the magazine 18 and which prevents the liquid from rising too much in the chamber 13. Through the-ha. wiring also takes place a cut- resp. gas overflow between the chamber and the reservoir during the flooding of the impregnation liquid Iran part one Varlet to the other. The owe and lower parts of the chamber 13 are connected to a circulation channel 26, which will also be partly filled with liquid, as shown in Fig. 5. Thanks to the construction of the basket 4 and the arrangement of the channels of the insulation plates described above, the liquid-shaped mixture hangs Hit into the insulation material. After the insulation material has been impregnated to the desired degree, it is placed in the chamber 13 resp. the circulation line 26 standing vfitskan ftterrinna to the magazine 18.

I cirkulationskanalens 26 ovre del, fOretradesvis ovanfor den hogsta niva, som vatskan kan intaga i kanalen, dr anordnad en av en motor 27 driven flakt 28 saint ett uppvarmningselement 29. 1;1:Alen 28 astadkommer en: eirkulation av i kammaren 13 och kanalen 26 fOrefintliga angor resp. luft i den av pilarna 30 antydda riktningen. En kondensor 32, forsedd med ett lampligen vattenkylt element 33, fir medelst ledningar 34, 35 kopplad parallellt till den del av eirkulationskanalen 26, som Or belagen mellan fliikten 28 °eh viirmeelementet 29. Fran kondensorn utgar en ledning 36, vilken foretradesvis är kyld medelst tvenne kondensorer 37, 38 och vilken genom en ledning 31 mynnar i den yttre atmosffiren. Den ena kondensorn 37 Or lampligen kyld rued ledningsvatten och den andra med kylvatska frau en kylmaskin. En sugflakt kan yam anordnad i ledningen 31, vilken flakt skapar ett mindre undertryek i cirkulationssystemet, tilIrackligt for att forebygga en utlackning av anga Iran detsamma. Flfiktens volymkapacitet kan for det ifra.gavarande andamalet vara liten. Kondensorn 32 och ledningen 36 Oro fOrsedda med uppsamlingsbehallare 39, 40 for kondensat, vilket aterledes till behallaren 15 genom ledningar 41, i vilka kunna yam anordnade ventiler 42. Den ovre delen av cirkulationskanalen 26 är vidare melIan uppvfirmningselementet 29 och impregneringskammaren 13 f5rsedd med en roranslutning 43 till den yttre luften, i vilken Or anbragt ett spjall 44. Liknande spjall Ore insatta I eirkulationskanalen 26 mellan a ena sidan kondensorledningarna 34 och 35 och 0 andra sidan mellan roranslutningen 43 och kammaren 13, sasom antytts vid 45 resp. 46. 1 kondensortedningen 35 Or anbragt ett spjfill 56 och i ledningen 34 ett spjall 56a. Friskluft kan intagas till impregneringskammaren 13 genom en kanal 48, forsedd med ett uppvarmningselement 49 samt ett ventilorgan 55. SAsom av fig. 5 framgar Oro delar av anlaggningen, vilka kunna utsattas for varme, omgivna av isolationsskikt 57. In the upper part of the circulation channel 26, preferably above the highest level which the liquid can occupy in the channel, there is arranged a surface 28 driven by a motor 27 and a heating element 29. 1; 26 Pre-existing angles resp. air in the direction indicated by the arrows 30. A condenser 32, provided with a suitably water-cooled element 33, is connected by means of conduits 34, 35 parallel to the part of the circulation channel 26 which is occupied between the flap 28 ° and the heating element 29. A conduit 36 emanates from the condenser, which is preferably cooled by means of two capacitors 37, 38 and which through a conduit 31 open into the outer atmosphere. One condenser 37 Or suitably cooled rued tap water and the other with coolant frau a cooling machine. A suction flap can be arranged in the line 31, which flap creates a small negative pressure in the circulation system, sufficient to prevent a leaching of the same Iran. The volume capacity of the fan may be small for the purpose in question. The condenser 32 and the conduit 36 are provided with collecting containers 39, 40 for condensate, which is returned to the container 15 through conduits 41, in which valves 42 can be arranged. 43 to the outside air, in which Or is arranged a damper 44. Similar dampers Ore inserted in the circulation duct 26 between on the one hand the condenser lines 34 and 35 and 0 on the other hand between the rudder connection 43 and the chamber 13, as indicated at 45 resp. 46. In the condenser line 35 Or is placed a throttle 56 and in the line 34 a throttle 56a. Fresh air can be taken into the impregnation chamber 13 through a duct 48, provided with a heating element 49 and a valve member 55. As can be seen from Fig. 5, parts of the plant which can be exposed to heat are surrounded by insulating layers 57.

Sedan isolationsmaterialet i korgen 4 indrankts med losnings- och impregneringsmedel och vatskan fait aterrinna till magasinet 18, sattes flakten 28 igfing, varjhmte vOrmetihföres elementet 29. Pet kan intraff a, att onodigt myeket av den namnda vatskan stannar kvar i pappersisolationen, speciellt dfr avstanden mellan de plana pappersskikten firci' sma, till fOljd av kapillarverkan. Dylikt vats- — 12374O —3 keoverskott stblases till att borja med frail isolationen ,n-iedelst den av fliikten alstrade luftstrommen samt far rinna tillbaka till ledningen 19. After the insulating material in the basket 4 has been soaked with release and impregnating agent and the liquid has been returned to the magazine 18, the surface 28 has been set, and the element 29 has to be heated. the flat paper layers firci 'small, due to the capillary action. Such water excess is blown to begin with the frail insulation, n-at least the air stream generated by the flue, and is allowed to flow back to the conduit 19.

Cirkulationssystemet liar som vasentlig uppgift att efter impregneringen avlagsna 15sningsmedlet fran isolationsplattorna samt att atervinna detsamma. Detta kan age rum pa foljande satt. Spjallet 44 och ventilorganet 55 hallos stfingda, medan spjfillet 46 ar Oppet. Spjallen 45 och 56 resp. 56a instiillas sà, att en viss del av den av flakten 28 i cirkulation forsatta luften resp. angorna bringas att pas-sera genom kondensorn 32. Den isolationsmaterialet genomstrommande, av elementet 29 uppvarmda luften framkallar en avdunstning resp. forangning av losningsmedlet och medlager delta i cirkulationen. Den cirkulerande luften hindras Iran att mattas med lOsningsmedel, genom att en -viss del av densamma alltid passerar genom kondensorn 32, dar losningsmedlet utfaller. Den i kondensorn 32 nedkylda luften uppvarmes anyo av varmeelementet 29 fore passagen genom isolationsmaterialets kanaler. Eftersom kondensorn 32 via ledningen 36 star i standigt oppen forbindelse med atmosfaren uppratthalles standigt samma tryck i cirkulationssystemet, namligen I huvudsak atmosfarstryek eller nagot Iligre tryek, om till ledningen 31 ãr ansluten en sugflakt, sasom own namnts. Gasformigt losningsmedel, som tillsammans med luft uttranger genom ledningen 36 till foljd av losningsmedlets avdunstning och dfirigenom framkallad volymokning i cirkulationssystemet, kondenseras i kondensorerna 37, 38. Kondensatet aterrinner via behfillaren 40 och ledningen 41 till uppsamlingsbehallaren 15. Sedan vatskan avtappats fran kammaren 13 avdunstar losningsmedel och mattar luften i isolationsmaterialets kanaler. Innan flakten 28 forsattes i funktion kan salunda en ytterligare avdunstning icke aga rum, varfOr vatskans viskositet bibehalles och Avrinningen av vatska frail paketens inre fortsatter. Pet ár uppenbart att man kan variera mangden kvarvarande impregneringsmedel i isolationen genom att igangsatta flakten resp. kondensationsforloppet vid olika tidsintervall frail det ogonblick, dà kammaren 13 tomdes. Ofta fir det fordelaktigt att omedelbart paborja cirkulations- och kondenseringsforloppen efter vatskans avtappning. Mangden asfalt kan uppga. till 25-100 procent av papperets vikt i den fardiga produkten. The circulation system has the essential task of removing the solder from the insulation plates after the impregnation and of recovering the same. This can take place in the following way. The damper 44 and the valve member 55 are held in place, while the throttle 46 is open. Slats 45 and 56 respectively. 56a is adjusted so that a certain part of the air resp. the vapors are caused to pass through the condenser 32. The air flowing through the insulating material, heated by the element 29, produces an evaporation resp. evaporation of the solvent and co-bearings participate in the circulation. The circulating air is prevented from being fed with solvent by Iran, in that a certain part of it always passes through the condenser 32, where the solvent fails. The air cooled in the condenser 32 is heated by the heating element 29 before the passage through the channels of the insulating material. Since the condenser 32 via the line 36 is in constant open connection with the atmosphere, the same pressure is constantly maintained in the circulation system, namely essentially atmospheric pressure or slightly lighter pressure, if a suction flake, as its own name, is connected to the line 31. Gaseous release agent, which together with air exits through line 36 due to evaporation of the release agent and thereby induced volume increase in the circulation system, is condensed in the condensers 37, 38. The condensate flows via the reservoir 40 and the conduit 41 to the collection container 15. After the liquid is drained from the chamber and mats the air in the ducts of the insulation material. Thus, before the float 28 is continued to function, further evaporation cannot take place, so that the viscosity of the liquid is maintained and the drainage of the liquid frail interior continues. It is obvious that one can vary the amount of remaining impregnating agent in the insulation by initiating the flattening resp. the condensation process at different time intervals from the moment when the chamber 13 was emptied. It is often advantageous to start the circulation and condensation processes immediately after the water has been drained. The amount of asphalt can indicate. to 25-100 percent of the weight of the paper in the finished product.

Cirkulationen fortgar pa ovan beskrivet salt under det att temperaturen hos den cirkule- rande luftangblandningen blir alit hogre och den relativa rnattningsgraden hos den cirkulerande luften alit mindre, tills slutligen den storsta delen av losningsmedlet har avdunstat fran pappersisolationen och Over kondensorerna 32 resp. 37, 38 aterletts till behallaren 15. Losningsmedlet atervinnes alltsa praktiskl la- get hell och hâilet. F5r att i mojligaste man forhindra, att aven den sista aterstoden av losningsmedlet i cirkulationssystemet avgar till den omgivande luften kan spjallet 46 stangas och ventilen 55 tippnas vid slutet av den oven beskrivna torkningsprocessen. Samtidigt padrages varme till varmeelementet 49 I ledningen 48. Flakten 28 kommer dá att insuga en relativt liten mangd uppvarmd friskluft till impregneringskammaren 13, -silken luft upptager de sista resterna av lOsningsmedlet, varpa derma luft far avga till den yttre atmosfaren efter passerandet av kendensorerna 32 resp. 37, 38, som befria luften Iran den sista aterstoden av losningsmedlet. The circulation continues on the salt described above while the temperature of the circulating air vapor mixture becomes alit higher and the relative humidity of the circulating air alit decreases, until finally most of the solvent has evaporated from the paper insulation and Over the condensers 32 resp. 37, 38 is returned to the container 15. The solvent is thus practically recovered in the layer of hell and healed. In order to prevent, as far as possible, even the last residue of the solvent in the circulation system from escaping to the ambient air, the damper 46 can be closed and the valve 55 tipped at the end of the drying process described above. At the same time heat is fed to the heating element 49 in the line 48. The flap 28 will then suck in a relatively small amount of heated fresh air to the impregnation chamber 13, which absorbs the last residues of the solvent, whereby this air is allowed to escape to the external atmosphere after passing the sensors 32. resp. 37, 38, which liberate the air Iran the last remnant of the solvent.

I vissa fall, speciellt om losningsmedlet har relativt lag kokpunkt, kan utdrivningen av detsamma frail isolationsplattorna lampligen age rum genom direkt bortkokning. Cirkulationssystemet koinmer da huvudsakligen endast att innehalla anga av losningsmedlet, som intranger i kondensorerna 32 resp. 37, 38, dar densamma kondenseras. I delta fall kan alltsa spjallet 56a vara stangt. Cirkulationen forsiggar emellertid i ovrigt pa samma salt som ovan beskrivits for tillfOrande av varme fran elementet 29 till papperspaketen. For att slutligen avlagsna och Atervinna de efter avdunstningens slut kvarvarande angorna av losningsmedlet i cirkulationssystemet kan man fi5rfara pa samma sfitt som oven beskrivits, i dot att spj fillet 46 stanges och forvarmd friskluft intages genom kanalen 48. De denna friskluft medfOljande angorna bringas att kondensera i kondensorerna 32 resp. 37 och 38. In some cases, especially if the solvent has a relatively low boiling point, the expulsion of the same frail insulation plates can hardly take place by direct boiling off. The circulation system then mainly only contains some of the solvent, which penetrates the condensers 32 resp. 37, 38, where the same is condensed. In some cases, therefore, the damper 56a may be closed. However, the circulation otherwise proceeds on the same salt as described above to supply heat from the element 29 to the paper packages. In order to finally remove and recycle the vapors of the solvent remaining in the circulation system after the end of the evaporation, one can proceed on the same surface as described above, in that the spinneret 46 is closed and preheated fresh air is taken in through the duct 48. The vapors accompanying this fresh air are caused to condense the capacitors 32 resp. 37 and 38.

Blandningen av losnings- och impregneringsmedlen kan antingen vara kall eller vara uppyarind medelst elementet 47. I bada fallen kunna den ena eller den andra av de ovan beskrivna metoderna for losningsmedlets atervinning komma till anvandning. Den ovan fOrst beskrivna metoden fir dock ofta att 10- redraga vid kall blandning och den andra vid varm blandning. The mixture of the solvents and impregnating agents can either be cold or be raised by the element 47. In either case, one or the other of the methods described above for the recovery of the solvent can be used. However, the method first described above is often reduced in cold mixing and the other in hot mixing.

Pet her visat sig, att dot kan vara av varde att fore impregneringen noggrant torka pappersisolationen. Lufttorrt pepper innehaller som bekant normalt 5-10 % fuktighet, vilket kan vara tillraekligt for att forsvara impregneringsmedlets intrangande i papperets porer och fibrer. Del ar darfor onskvart att Oven drive ut derma fuktighet for att uppna baste mojliga impregnering. Darest impregneringen sker vid relativt hog temperatur kan pappersisolationen vidare taga skada av den Anga, som vid doppningen utvecklas, om isolationen joke fiirut har blivit fullstandigt forked. Torkningen av pappersisolationen ken natur- ligtvis she fore des insattning i impregneringskammaren. Donna torkning kan emeller- tid med fardel foretagas i impregneringskammaren 18, som dA efter insattandet av isolationen tillslutes medelst locket 14. Spj Allen 44 resp. 56 hallas samtidigt stangda, medan spjal- 4— — len. 45, 56a och 46 aro appna. Varmen i uppvarmningselementet 29 drages ph och flakten 28 sattes igang. Man erhaller dã en cirkulation av varmluft genom isolationsmaterialets alla kanaler, varvid fuktigheten i papperet upptages av luften. Harvid kan det yarn onsk-vart att nagot oppna ventilorganet 55, sa att standigt en viss procentsats friskluft intages cirkulationssystemet, under det att en motsvarande mangd med fuktighet mattad luft -drives ut genom ledningarna 34, 36. It turned out that the dot can be of value for the impregnation to thoroughly dry the paper insulation. Air-dried pepper is known to normally contain 5-10% moisture, which may be sufficient to justify the impregnation of the impregnating agent in the pores and fibers of the paper. It is therefore advisable for Oven to expel this moisture to achieve the best possible impregnation. If the impregnation takes place at a relatively high temperature, the paper insulation can further be damaged by the Anga, which develops during dipping, if the insulation joke has previously been completely forked. The drying of the paper insulation can, of course, be preceded by insertion into the impregnation chamber. Donna drying can, however, be carried out with a part in the impregnation chamber 18, which dA after insertion of the insulation is closed by means of the lid 14. Spj Allen 44 resp. 56 halls simultaneously barred, while the slat- 4— - len. 45, 56a and 46 are the apps. The heat in the heating element 29 is drawn ph and the flake 28 is started. A circulation of hot air is then obtained through all the channels of the insulation material, whereby the moisture in the paper is absorbed by the air. In this case, it may be desirable to open the valve member 55 somewhat, so that a certain percentage of fresh air is constantly taken up by the circulation system, while a corresponding amount of moisture-matte air is expelled through the lines 34, 36.

Den ovan beskrivna app araturen kan aven anvandas for impregnering av pappersisolationer med impregneringsmedel i emulgerad form sasom t. ex. astfaltemulsion. The apparatus described above can also be used for impregnating paper insulations with impregnating agent in emulsified form such as e.g. astphalt emulsion.

Efter fullgjord impregnering, speciellt vid anvandande av asfaltemulsion, kan det vara Onskvart att uppvarma isolationen till relativt hog temperatur, varvid impregneringsmedlet insmaltes i och fullstandigt genomdranker pappersskikten, sa att basta mojliga impregneringseffekt uppnas. Denna uppv5rmning och insmaltning sker aven latt och effektivt med det i fig. 5 visade cirkulationssystemet. Spjallen 44, 56 resp. 56a och ventilen 55 'Alias darvid stangda under det att spjallen 45 och 46 aro oppna, varme tillfores elementet 29 och flakten 28 sattes i funktion. I vissa fall kan samtidigt en oxidering av asfalten Aga rum, varvid luften lampligen fornyas under cirkulationen i systemet genom reglering av spjallen 55, 46 och 44. After complete impregnation, especially when using asphalt emulsion, it may be desirable to heat the insulation to a relatively high temperature, whereby the impregnating agent is melted in and completely soaks through the paper layers, so that the best possible impregnating effect is achieved. This heating and melting also takes place easily and efficiently with the circulation system shown in Fig. 5. Spjallen 44, 56 resp. 56a and the valve 55 'Alias thereby closed while the slats 45 and 46 are open, heat is supplied to the element 29 and the flap 28 is put into operation. In some cases, an simultaneous oxidation of the asphalt Aga can take place, whereby the air is suitably renewed during the circulation in the system by regulating the dampers 55, 46 and 44.

Vid anvandning av vissa losningsmedel kan det forekomma, att efter verkstalld impregnering en viss lukt frail losningsmedlet kvarstannar i pappersisolationen. For att avlagsna denna lukt bor man lampligen cirkulera frisk Tuft genom isolationen, vilket sker ph sá satt, att locket 14 avlyftes frau kammaren 13, varvid samtidigt spjallet 46 stanges och spjallet 44 Oppnas. Flakten 28 suger da en strain av frisk Tuft genom pappersisolationen, vilken Tuft darpa utblases genom kanalen 43 till den yttre atmosfaren. When using certain solvents, it may happen that after impregnation, a certain odor from the solvent remains in the paper insulation. In order to remove this odor, fresh Tuft should suitably be circulated through the insulation, which is done in such a way that the lid 14 is lifted from the chamber 13, whereby at the same time the damper 46 is closed and the damper 44 is opened. The flat 28 then sucks a strain of fresh Tuft through the paper insulation, which Tuft darpa is blown out through the channel 43 to the outer atmosphere.

Anordningen enligt uppfinningen her den fordelen, att hela impregneringsproceduren av pappersisolationen forsiggar i ett slutet system. Detta mojliggOr ett atervinnande av den storsta mOjliga mangden av losningsmedlet genom undvikande av alla forluster, som vid overfOringen av den impregnerade isolationen fran en behallare till en annan annars skulle uppsta. Detta ãr givetvis av varde, di de fiesta ifragakommande losningsmedel aro relativt dyrbara. Det slutna systemet är aven av stor fordel i de fall, dar impregneringsmedlen aro eldfarliga eller hava ofiirdelaktiga fysiologiska verkningar pa betjaningspersonalen. Genom att torkning, impregnering, avdunstning etc. sker under insattning av isolationen i en och samma behallare utan omlastningar forenklas givetvis ocksa betjaningen med atfoljande besparing av tid och kostnader. The device according to the invention has the advantage that the entire impregnation procedure of the paper insulation takes place in a closed system. This makes it possible to recover the largest possible amount of the solvent by avoiding all the losses which would occur during the transfer of the impregnated insulation from one container to another. This is of course of value, as most of the solvents in question are relatively expensive. The closed system is also of great advantage in cases where the impregnating agents are flammable or have adverse physiological effects on the operating personnel. By drying, impregnation, evaporation, etc. takes place during insertion of the insulation in one and the same container without transhipments, the operation is of course also simplified with the consequent saving of time and costs.

I stallet for att purnpa upp impregnerings vatskan i kammaren 13 kan Inagasinet 18 vara anbragt under kammaren, varvid isolationsplattorna vid impregneringen nedsankas I magasinet. Mellan kammaren 13 och magasinet 18 kan darvid ett sjall vara anbragt. Instead of pumping up the impregnation liquid in the chamber 13, the Inagasine 18 can be arranged under the chamber, whereby the insulating plates during the impregnation are immersed in the magazine. A shawl can then be arranged between the chamber 13 and the magazine 18.

Claims

Patent claim:

Installation system for impregnating insulation boards, in particular of a multilayer type with continuous inner channels, preferably of fibrous material, characterized in that it comprises a magazine (19), containing a solution of impregnating agent in ordinary liquid liquid solvents, and a core mare ( 13), in which the impregnation can take place and which is connected by wires to the magazine for the transfer of the solution between them, which chamber has a shape allowing an insertion of a number of plates in the chamber in such a way that in resp. between these existing channels form open continuous passages together with a circulation channel (26) connected to the chamber, which contains a flat (28) and a heating element (29) and which communicates with one or more capacitors (32, 37, 38) for separating said solvent in liquid form after applied impregnation, after the same has been taken up in the form of yam gas flowing in the circulation channel, while a balanced amount of impregnating agent remains in the plates.

Plant according to claim 1, characterized in that a pressure equalization line (31, 30) is connected to the circulation channel (26), which opens outside the channel in question and which has at least one condenser for separating and recovering solvent vapors which follow through the line Iran the circulation channel. gas.

Installation according to claim 1 or 2, characterized in that the circulation channel (26) communicates with at least two capacitors (37, 88), which have different temperatures.

Plant according to claims 1-3, characterized in that the condenser (38), which the gas last passes under its vague out of the circulation duct (26), here the lower temperature.

Arrangement according to one of the preceding patent claims, characterized in that one or more of the capacitors are connected by lines (34, 35) in parallel to the circulation channel (26).

Plant according to patent claim 5, can be characterized by in the circulation channel (26) resp. these cables (34, 35) fitted, installable dampers resp. valves (45, 46, 56, 56a) for regulating the amount of gas or steam flowing through the pipes.

7. Plant according to the patent patent 1; - - kannetecknad darav, att kammarens (13) vagaar aro stallda vertically.

Plant according to claim 1, characterized in that the circulation channel (26) has a branch connected to the lower part of the chamber (13) and a part thereof, which later contains the flat (28) and the varine element (29), and that the insulating plates containing basket (4) or the like device is arranged insertable into the chamber by means of a support device so arranged that the plates during the impregnation in the fine magazine (18) to the chamber (13) overlay the impregnation solution are below the surface (28) and the heating element (29).

Plant according to patent claim 8, characterized in that the part of the magazine (18) located above the impregnation solution communicates with the part of the chamber (13) above the insulation plates by means of an open line (25), so that a gas resp. Steam overflow arises through this line, as the flow is transferred from one to some other of these rooms.

An installation according to any one of the preceding patent claims, characterized by a channel (43) communicating with the external atmosphere and connected to the circulation duct (26), through which the air passing through the chamber (13) can be caused to flow out after conversion of the said duct mounted shutters or similar means (46).