SE125726C1

SE125726C1 -

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Publication number: SE125726C1
Authority: SE
Publication date: 1949-01-01

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KLASS 55 d:4 BEVILJAT DEN 2 JUNI 1949 PATENTTID PAN DEN 15 JUL! 1942 PUBLICERAT DEN 2 AUGUST! 1949 Florti11 tad ritningar. CLASS 55 d: 4 GRANTED ON JUNE 2, 1949 PATENT PERIOD ON JULY 15! 1942 PUBLISHED ON AUGUST 2! 1949 Florti11 tad drawings.

VICKERY S LIMITED, LONDON, STORBRITANNIEN. VICKERY S LIMITED, LONDON, UNITED KINGDOM.

Separator av virveltyp. Separator type separator.

Urppfinnare: H. E. B. Scott. Inventor: H. E. B. Scott.

Prieritet beaiird frdn, den 15 juli, oh 30 september 1941 (Storbritannien). Priority beaiird frdn, July 15, oh September 30, 1941 (Great Britain).

Foreliggande uppfinning avser separatorer for behandling av vatskor och suspensioner av fasta amnen i vatskor, speciellt for behandling av pappersmassa, dar materialet, som skall behandlas, insprutas tangentiellt under hog hastighet genom ett inlopp, vilket avsmalnar till reducerad och i huvudsak rektangular tvdrsektion, in i en virvelbehallare av cirku- lärfrau -vilken det renade materialet hojer sig i riktning uppat, under det att de separerade fororeningarna fa eller tvingas avAlta sig lampligen i ett utrymme skyddat Iran virveln I virvelkammaren. Separatorer av delta slag beskrivas i det engelska paten-let nr 532 808. The present invention relates to separators for treating liquids and suspensions of solids in liquors, in particular for treating pulp, where the material to be treated is injected tangentially at high speed through an inlet, which tapers into a reduced and substantially rectangular cross-section, into a vortex container of circular frau -which the purified material rises in the upward direction, while the separated contaminants fa or are forced byLight fit in a space protected Iran vortex In the vortex chamber. Separators of the delta type are described in English Patent No. 532,808.

Det raka tangentiella munstycket maste Overga i en spiralledning, i vilken bildandet av virveln ager rum, och overgangen hOr ske gradvis. Hitintills har spiralledningen, i vilken virveln bildas, utformats i det inre av en gjuten overdel, vilken medelst bultar fasts vid virvelbehallarens ovre kant. En sâ tillverkad lednings inneryta är icke latt slutbearbetbar och icke heller latt tillgdnglig for rengoring eller polering efter tang anvandning. The straight tangential nozzle must pass Overga in a spiral line, in which the formation of the vortex takes place, and the transition must take place gradually. Hitherto, the spiral conduit, in which the vortex is formed, has been formed in the interior of a molded upper part, which is fixed by bolts to the upper edge of the vortex container. The inner surface of such a pipe is not easily machinable, nor is it readily available for cleaning or polishing after pliers use.

Enligt uppfinningen uppfylles overdelen av virvelbehallaren eller en cylindrisk, uppatriktad forldngning av denna utav en. hylsa, som kan omgiva eller bilda avslutningen av utloppsroret, genom vilket den renade pappersmassan hojer sig, och pa. ytterytan av denna hylsa dr utformat ett i huvudsak spiralformat spar med alltmer okande radiellt djup och med ett audit djup lika med det hos det tillh5rande munstycket. Delta spar och den omgivande vaggen av virvelbehallaren utgora den virveln bildande ledning, som sammanhanger med munstycket. Innervaggen hos den rektanguldra anden av munstycket är tangentiell till vaggen hos virvelbehallaren och dess inneryta är tangentiell till hylsans yta vid dess del med full diameter och vid den punkt, ddr sparet borjar. Anordningar sasom en tapp eller en avfasning born anordnas for att lokalisera hylsan i overdelen av virvelbehallaren, ty em den vrides fran det just beskrivna ldget till ett Idge, i vilket en del av spdret tackes av innervaggen hos munstycket kommer en halighet att bildas, i vilken suspenderade amnen komma att anhopas. Om den vrides till ett i vilket innerytan av munstycket moter hylsans yta med full diameter strax intill spa.- rets borjan kommer inloppskanalen att delvis tilltappas och dess minimitvdrsektion att reduceras. Det sistnamnda laget är emellertid icke utan betydelse. Ty dessa separatorer arbeta, fastan de kunna fungera tillfredsstallande mom ett stort arbetsomrade, sarskilt elfektivt vid en viss insprutningshastighet, d. v. s. vid en viss -vinkelhastighet hos det material, som skall behandlas. Mojligheten att modifiera minimitvarsektionen hos inloppskanalen genom att andra installningen av hylsan mojliggor darfor for tillverkaren att genom en eller tva modeller av separatorer tillfredsstalla behovet av separatorervil- ken corn heist given genomstrOmningskapacitet mom ett stort omrade. Dessutom maste i praktiken genomstromningen hos en given separator ofta variera. Volymen av den till pappersmaskinen tillf8rda papp ersmass an maste andras med vane andring av typen av papper, som tillverkas, och den konsistens, vid vilken pappersmassan bearbetas. Pappersmassan kan aven passera genom en sats av tva eller flera separatorer, och man kan vara tvungen all taga bort en av dem ur drift grund av oavsedd tilltdppning, eller av nagot annat skal, varpa genomstromningen hos de aterstaende separatorerna maste i motsvarande grad Ras. According to the invention, the upper part of the vortex container or a cylindrical, upwardly directed extension thereof is fulfilled by one. sleeve, which can surround or form the end of the outlet pipe, through which the purified pulp rises, and pa. the outer surface of this sleeve forms a substantially helical groove with increasingly increasing radial depth and with an audit depth equal to that of the associated nozzle. Delta spades and the surrounding cradle of the vortex container form the vortex-forming conduit, which is connected to the nozzle. The inner cradle of the rectangular spirit of the nozzle is tangential to the cradle of the vortex container and its inner surface is tangential to the surface of the sleeve at its full diameter portion and at the point where the groove begins. Devices such as a pin or bevel bore are provided to locate the sleeve in the upper part of the vortex container, for if it is turned from the just described beam to an Idge, in which part of the spear is thanked by the inner cradle of the nozzle a cavity will be formed, in which suspended subjects will be accumulated. If it is turned to one in which the inner surface of the nozzle meets the full diameter surface of the sleeve just next to the beginning of the groove, the inlet channel will be partially drained and its minimum turning section will be reduced. However, the latter team is not without significance. For these separators work, although they can function satisfactorily in a large working area, especially electrically at a certain injection rate, i.e. at a certain angular velocity of the material to be treated. The possibility of modifying the minimum response section of the inlet duct by second installation of the sleeve therefore enables the manufacturer to satisfy through one or two models of separators the need for a separator which has a given given flow capacity in a large area. In addition, in practice the throughput of a given separator must often vary. The volume of pulp fed to the paper machine must be different from that of the type of paper being produced and the consistency with which the pulp is processed. The pulp can also pass through a batch of two or more separators, and one may have to remove all of them from operation due to unintentional clogging, or some other shell, warping the flow of the remaining separators must be correspondingly Ras.

For att mojliggOra att separatorns effekti-vitet bibehalles, ndr genomstromningen varieras, kunna organ vara anordnade for -vridRing air hylsan genom paverkan av en mekanism utanfor virvelbehallaren for att variera inloppstvararean sa, att insprutningshastigheten kan hallas mer eller mindre konstant. Det är icke tiliräckligt att variera inloppsarean genom en kran, sasom tidigare foreslagits, ty en partiellt oppen kran astadkommer turbulens i massastrommen. Vad som erford- 2— — ras fir att den tillgangliga tryckhojden yid inloppet anvandes fOr att astadkomma en okad hastighet pfi massastromningen genom det avsmalnande inloppet med ett minimum av virvel- och andra friktionsfOrluster, vilket sker genom den vridbara hylsan, dâ i alla regleringslagen av hylsan reduceringen i inloppets tvarsnitt bör vara jamn och gradvis. Att helt uppna syftemalet med konstant yinkelhastighet innebar en Mining av tillforseltryckhoj den, nar flodet minskas, och darf Or bee- pappersmassa matas till separatorn av en pump, som liar en sakta fallande tryckeffektkarakteristik, vilket latt uppnas genom lfimplig utformning av en centrifugalpump. En tryckokning fran 5 till 6 % har befunnits tillracklig for att tacka ett effektomrade fran full belastning till 'A delar av full belastning. Pumpen matar pappersmassa fran den vanliga blandningsladan, i vilken massan fran hollandaren utspades med den onskade proportionen bakvatten, och separatorn avlamnar i ett trag, &fin vilket den renade pappersmassan flyter genom en kontrolldammlucka I pappersmaskinen. Det är onsk-vart, att det alltid finnes eft litet overskott fran trauet, och detta ledes tillbaka till blandningsladan. Det variabla inloppet kan automatiskt kontrolleras genora en flottar eller ett flote, vilken fir anordnad pa den suspension, som behandlas, i narheten av en damm, over vilken suspensionen strommar. For mycket stora yariationer i genomstr8mningen kan det -vara onskvart att aven variera arean av utloppet pa samma satt som genomstromningen, och uppfinningen medgiver detta, och Astadkomma en lamplig proportionering av variationen i utloppsarean i forhfillande till variationen i inloppsarean. In order to enable the efficiency of the separator to be maintained, as the flow is varied, means may be provided for twisting the air sleeve by actuating a mechanism outside the vortex container so as to vary the inlet area so that the injection speed can be kept more or less constant. It is not sufficient to vary the inlet area through a crane, as previously suggested, for a partially open crane causes turbulence in the mass stream. What is required is that the available pressure head yid the inlet is used to achieve an increased velocity of the mass flow through the tapered inlet with a minimum of vortex and other friction losses, which occurs through the rotatable sleeve, then in all control layers of The sleeve reduction in the inlet cross section should be even and gradual. Completely achieving the target at a constant angular velocity involved a Mining of supply pressure height when the flow is reduced, and pulp must be fed to the separator by a pump which has a slowly decreasing pressure effect characteristic, which is easily achieved by the simple design of a centrifugal pump. A pressure increase from 5 to 6% has been found sufficient to accommodate a power range from full load to 'A parts of full load. The pump feeds pulp from the ordinary mixing barn, in which the pulp from the Dutch was diluted with the desired proportion of backwater, and the separator slows down in a funnel, and fine as the purified pulp flows through a control dust hatch in the paper machine. It is desirable that there is always a small excess from the tray, and this is led back to the mixing barn. The variable inlet can be automatically controlled by a raft or a raft, which is arranged on the suspension being treated, near a pond over which the suspension flows. For very large variations in the flow, it may be unreasonable to also vary the area of the outlet in the same way as the flow, and the invention allows this, and to achieve an appropriate proportioning of the variation in the outlet area in comparison to the variation in the inlet area.

Uppfinningen är ytterligare pa annat salt fordelaktig. Den ar namligen lamplig for en tillverkare av separatorer, aven nfir en anyfindare icke liar flagon m8jlighet att variera genomstromningen. Den tillater tillverkaren att installa genomstromningen till ett pa for-hand bestamt varde, under det att den medgiver stora toleranser vid tillyerknincien och mojliggor att ett utforande av separatorer genom en enkel installning kan tacka en hel rad av Onskade genomstromningar. The invention is further advantageous on other salts. Namely, it is suitable for a manufacturer of separators, even if an inventor does not like the possibility of varying the flow. It allows the manufacturer to adjust the flow rate to a predetermined value, while allowing large tolerances at the supplier and enabling the design of separators through a simple installation to accommodate a whole range of desired flows.

Ett antal mojliga utforingsformer av det variabla inloppet visas sasom exempel pa bifogade ritning, dar fig. 1 och 2 visa en sidoresp. planvy, hada delvis i sektion, av Overdelen av en virvelseparator, som liar bade -variabelt inlopp och variabelt utlopp. Fig. 3 visar en sidosektion efter linjen III—III i fig. 4 och fig. 1 en plansektion efter linjen IV—IV I fig. 3 av en modifierad utforingsform. Fig. visar en sidovy av den rorliga delen av det variabla inloppet i fig. 3 och 4. Fig. 6 visar en axialsektion och fig. 7 en plansektion efter linjen VII—VII i fig. 6 av en alternativ utforingsform av det variabla ntloppet, medan fig. 8 liknar fig. 7, men. visar delarna i ett annat lage, och fig. 9 en sidosektion efter linj en IX—IX i fig. 8. Fig. 10 visar ett diagram for A.skadliggorande av den automatiska kontrollen av ett variabelt inlopp eller inlopp och utlopp. A number of possible embodiments of the variable inlet are shown as examples in the accompanying drawing, in which Figures 1 and 2 show a side response. plan view, had partly in section, of the upper part of a vortex separator, which liar both -variable inlet and variable outlet. Fig. 3 shows a side section along the line III-III in Fig. 4 and Fig. 1 a plan section along the line IV-IV in Fig. 3 of a modified embodiment. Fig. Shows a side view of the movable part of the variable inlet in Figs. 3 and 4. Fig. 6 shows an axial section and Fig. 7 a plan section along the line VII-VII in Fig. 6 of an alternative embodiment of the variable inlet, while Fig. 8 is similar to Fig. 7, but. shows the parts in another layer, and Fig. 9 a side section along line IX-IX in Fig. 8. Fig. 10 shows a diagram for A. damage of the automatic control of a variable inlet or inlet and outlet.

Vid alla utforingsformerna Or 1 den byre delen av den egentliga virvelbehallaren och 2 ett vid densamma medelst bultar fast for-aligning eller huvud, av vilket det avsmalnande tangentiella inloppet 3 utgor en del och mom vilket Or belagen den spiralformiga hanan, genom vilken suspensionen nar virvelbehallaren. Ett utloppsror 4 Or medelst bultar fast vid den ovre flansen ph huvudet 2. I fig. 1 och 2 stracker sig utloppsroret 4 nedat i virvelbehallaren en tillracklig stracka for att sakerstalla att den onskade separeringen av fororeningar ager rum, innan suspensionen far vanda i riktning uppat. Mellan utloppsrorets flans och huvudets flans Or anordnad och fast flansen av en hylsa 5, varvid en vfitsketat fog finnes mellan flansarna genom lamm liga packningar i ringformiga spar 6. I hylsan finnes ett spar med okande radiellt djup och av samma axiella djup som det tangentiella inloppsroret 3. Detta Or ringformigt vid sin oversta del och darefter spiralformigt. Sparet fordjupas till den totala radiella tjockleken av hylsan, vilken saledes slutar med en spiralformig anddel 7 lindad kring utloppsroret. Pa en arm 8, som stacker sig fran hylsan 5, Or medelst bultar fast ett tandat segment 9, vilket star i ingrepp med ett kugghjul 11 pa en vertikal axel 12, uppburen vid sin. ovre dude ay en hallare 13, vilken Or fast medelst de Millar, vilka fasta huvudet 2 yid virvelbehallaren 1. P0 ett lampligt stifle langre ned kan axeln 12 uppbara en ratt 14, sa.- som framgar av fig. 10, eller ocksa, sasom i det foljande beskrives, vara forsedd riled automatiska manoveranordningar. Fig. 1 och 2 visa Oven anordningar fOr installning av den verksamma tvarsnittsarean hos utloppsroret 4 i Oyerensstammelse och samtidigt med installningen ay inloppet. For detta andamal Or en rundad plunsch 15 anordnad aft glida I ett lock 6 i utloppsrOrets 4 vagg. Vid densamma Or fast en tapp, som uppbar en mile 17, vilken Or belagen i ett kamspar 18 i ett kamorgan 19, som Or fast -vid armen 8. Genom att vrida axeln 12 med tillhj alp ay rat-ten 14 eller ph annat satt kan hylsan 5 vridas i nagondera riktningen &fin det i figurerna visade mittlaget. Om hylsan vrides motsols, sasom framgar av fig. 2, tills punkten 21 p0 hylsan star mitt emot punkten 22 pa huvudet 2, kommer inloppet att ha sift maximitvarsnitt. I det visade laget fir inloppet huvudsakligen sammandraget utan plotslig andring av tvarsnittet och utan stOrning av de yttre susperisionslagren. Sammandragningen Or alltid anordnad tatt intill den cirkulara banans bOrjan, sa att den Okade hastighet, som astad- — —3 homilies genom sammandragningen, fir off ekfly for bildandet ay virveln. Anddelen 7 fir for- djupad, dar sfi är riodyandigt, for att forhind- ra att flagon del ay huvudets inloppskanal ar obetackt fri av hylsan 5 i dennas andlage. In all embodiments Or 1 the upper part of the actual vortex container and 2 one at the same by means of bolts fixed for-alignment or head, of which the tapered tangential inlet 3 forms a part and mom which Or coated the helical male, through which the suspension reaches the vortex container . An outlet pipe 4 Or by means of bolts fixed to the upper flange ph the head 2. In Figs. . Arranged between the outlet pipe flange and the head flange Or arranged and fixed flange of a sleeve 5, wherein a whip-jointed joint is present between the flanges through lamellar gaskets in annular grooves 6. In the sleeve there is a groove with increasing radial depth and of the same axial depth as the tangential inlet pipe This Or is annular at its uppermost part and then helical. The ridge is recessed to the total radial thickness of the sleeve, which thus ends with a helical portion 7 wound around the outlet pipe. On an arm 8 projecting from the sleeve 5, Or by means of bolts a toothed segment 9, which engages with a gear 11 on a vertical shaft 12, supported by its. upper dude ay a holder 13, which Or fixed by means of the Millar, which fixed the head 2 yid the vortex container 1. On a lamp stifle further down the shaft 12 can support a knob 14, as shown in Fig. 10, or also, as in the following is described, be provided riled automatic actuators. Figs. 1 and 2 also show devices for installing the effective cross-sectional area of the outlet pipe 4 in the Oyer lineage and at the same time as the installation at the inlet. For this purpose, a rounded plunger 15 arranged to slide in a lid 6 in the cradle of the outlet pipe 4. Attached to the same is a pin which carried a mile 17, which is coated in a cam pair 18 in a cam member 19, which is attached to the arm 8. By turning the shaft 12 with the aid of the steering wheel 14 or otherwise the sleeve 5 can be rotated in any direction & fine the middle layer shown in the figures. If the sleeve is turned counterclockwise, as shown in Fig. 2, until the point 21 on the sleeve is opposite the point 22 on the head 2, the inlet will have a sieve maximum cross-section. In the team shown, the inlet is mainly contracted without a sudden change in the cross section and without disturbance of the outer suspension layers. The contraction Or always arranged close to the beginning of the circular path, so that the increased velocity, which astad- - —33 homilies through the contraction, fir off ekfly for the formation of the vortex. The portion 7 is deepened, where sfi is riodyandigt, to prevent the flake portion of the head inlet channel from being uncovered free of the sleeve 5 in its face.

Vridningen av hylsan fororsakar ocksa att kamorganet 19 f Or fram plunschen 15 till eller drar tillbaka den fran utloppsroret 4, nar inloppets tvarsektion minskas eller Ras. The rotation of the sleeve also causes the cam member 19 to advance the plunger 15 to or retract it from the outlet pipe 4 when the cross section of the inlet is reduced or Ras.

Om det icke är meningen, att anyandaren av maskinen skall ha mojligheten att installa separatorn for en varierande genomstriimDing, erfordras icke armen 8 och installningsinekanismen 9, 11, 12, 13, 14 och icke heller paekningen mellan 2, 4_ och 5. Hylsan 5 in-shines en gang for alla av tillverkaren riled korrigering for flagon tillverkningstolerans, som inyerkar pa genomstromningen, eller installes for att avpassa genomstromningen till ett yisst yarde mom ett begransat miracle och fixeras sedan i lage, varefter delarna fa.stas tatt samman medelst bultar. Om anvandaren ay maskinen skulle tvingas att andra sina arbetsforhallanden och det erfordras att minska eller Oka genomstromningen, är tillyerkaren i stand att omstalla spiraldelen. If it is not intended that the user of the machine be able to install the separator for a varying flow, the arm 8 and the installation mechanism 9, 11, 12, 13, 14 are not required, nor the point between 2, 4_ and 5. The sleeve 5 in -shines once for all by the manufacturer riled correction for flake manufacturing tolerance, which affects the flow, or is installed to adjust the flow to a yisst yarde mom a limited miracle and then fixed in layer, after which the parts are fastened together by bolts. If the user of the machine should be forced to change his working conditions and it is required to reduce or increase the flow, the operator is able to readjust the spiral part.

I den i fig. 3, 4 och 5 visade utforingsformen slutar det egentliga utloppsroret 4 vid flansen och är fOrlangt genom inloppsregulatorhylsan 23. Den Owe delen av hylsan är ilksom forut ay en diameter lika med huvudets och i denna del ar utformat ett spiralformigt spar, sasom redan beskriyits. Hylsans urborrDing, vilken Sr lika med utloppsrorets urborrning vid overdelen, är sammandragen yid 24. OYanfor denna sammandragning fir en sta'ng 25 med en forstorad och utat avsmalnande ande 26 anordnad glidbar i ett lock 27 i utloppsroret 4. Den är rorligt anordnad genom en vinkelhaystang 28, Aiken Sr svangbar pa en hallo.re 29 pa utloppsroret och vippas genom kamorganets 19 yerkan pa en rulle 31 ph dess undo. Hylsans 23 form framgar ytterligare av fig. 5, i vilken visas det relativa laget av kanten av kanalen 20 i huvudet, nar inloppet reducerats till en minimitvararea genom vridningen av den med spiralformigt spar forsedda hylsan 23 och forlangningsdelen 30 av hylsans del med full diameter, sa som är nOdvandigt for att halla den undre delen av kanalen tackt for att forhindra forbistromningen ILV fluidum direkt till huvudvirvelkammaren. In the embodiment shown in Figs. 3, 4 and 5, the actual outlet pipe 4 ends at the flange and is extended through the inlet regulator sleeve 23. The upper part of the sleeve is similar to a diameter equal to the head and in this part a helical groove is formed. as already described. The bore of the sleeve, which is equal to the bore of the outlet pipe at the upper part, is contracted at 24. angle lift rod 28, Aiken Sr pivotable on a halo.re 29 on the outlet pipe and tilted through the cam member 19 yerkan on a roller 31 ph its undo. The shape of the sleeve 23 is further shown in Fig. 5, in which the relative layer of the edge of the channel 20 in the head is shown, when the inlet has been reduced to a minimum product area by rotating the helical sleeve 23 and the extension portion 30 of the full diameter part of the sleeve. which is necessary to keep the lower part of the channel tight to prevent the bypass flow ILV fluid directly to the main vortex chamber.

Fig. 6-9 visa en alternativ anordning for variation av utloppets tyarsektion. Vid anden cv utloppsroret 4 finnes ett tvarstycke 32 med striimlinjeformat tyarsnitt och spindelform. Ett liknande tvarstycke 33 i hylsan 84 Sr anordnat med en platt sida Overst och i kontakt med tvarstycket 32. Vid det i fig. 6 visade laget tacker det ena stycket precis det andra och de bada styckena astadkomma det minsta hindret fOr stromningen. Nar hylsan 34 vrides, intaga de hada styckena sadana re lativlagen, som visas i fig. 8 och 9, i vilka den fria arean av utloppsrorets borrning Sr redu- cerad i huvudsak till ett minimum. Genom lamplig utformning ay styckena 32 och 33, vilka kunna ha annan form an den visade, kan variationen ay borrningen fran maximum till minimum goras Over samma vridningsbage, som behoys fiir att andra inloppsarean fran maximum till minimum. Sasom regel Sr det tillrackligt att installa inloppet f Or hand. Om nagon markering behovs betraffande den riktiga iustallningen, kan denna givas genom en indikator, vilken pfiverkas genom en flottor eller ett flote, som Sr anordnad pA strom- men av den behandlade suspensionen, intill en dammn, Over vilken strOmmen flyter yid sin passage till eller fran separatorn. Delta illustreras schematiskt i fig. 10. Blandningsladan visas yid 46 med Mr 47 och 48, som till densamma leda bakvatten resp. pappersmaterial. En pump 49 matar pappersmassan fran blandningsladan 46 och avlamnar den till en eller flera virvelbehallare 1. Pumpen bar lampligen ha en sakta fallande tryekeffektkarakteristik, emedan erhMlandet av konstant vinkelhastighet i virvelkammaren innebar okning av tillforseltryckhojden, nar strommen minskar. Den renade pappersmassan, som avlamnas av separatorn 1 till stromningsladan 51, Hiles i overskott Over behoyet i peppersmaskinerna, som betjanas ay separatorn, och och overskottet aterfOres till blandningsladan Over en damm 52. Intill denna damm Sr striimmens yta anordnad en flottor eller ett flOte 53, vilket kan ha formen av ett hjul eller en rulle och Sr vridbar genom en motor 54. FlOtet visas uppburet av en radiell arm 55, Yid vilken Sr fast en yisare 56, som ror sig Over en skala. Figs. 6-9 show an alternative device for varying the thyr section of the outlet. At the spirit and outlet pipe 4 there is a crosspiece 32 with a streamlined bull section and spindle shape. A similar crosspiece 33 in the sleeve 84 Sr arranged with a flat side at the top and in contact with the crosspiece 32. In the case shown in Fig. 6, one piece just thanks the other and the two pieces provide the least obstacle to the flow. When the sleeve 34 is rotated, the had pieces take on such relative layers, as shown in Figs. 8 and 9, in which the free area of the outlet pipe bore Sr is reduced substantially to a minimum. By suitable design of the pieces 32 and 33, which may have a different shape from the one shown, the variation of the bore from maximum to minimum can be made over the same torsion bag, which is needed for other inlet areas from maximum to minimum. As a rule, it is sufficient to install the inlet manually. If any marking is required for the proper installation, this may be given by an indicator which is actuated by a float or float arranged on the stream of the treated suspension, adjacent to a dam, over which the stream flows yid its passage to or from the separator. Delta is schematically illustrated in Fig. 10. The mixing barn is shown yid 46 with Mrs 47 and 48, which lead to it backwater resp. paper material. A pump 49 feeds the pulp from the mixing tray 46 and unloads it into one or more vortex containers 1. The pump should suitably have a slowly decreasing pressure effect characteristic, since maintaining a constant angular velocity in the vortex chamber meant increasing the feed pressure height as the current decreases. The purified pulp, which is unloaded by the separator 1 to the flow barn 51, hiles in excess over the housing of the pepper machines, which are operated by the separator, and the excess is returned to the mixing barn over a pond 52. Adjacent to this pond is a float or a float 53. , which may be in the form of a wheel or a roller and Sr rotatable by a motor 54. The float is shown supported by a radial arm 55, Yid which Sr fixed a yisare 56, which moves over a scale.

Om det Sr Onskyart att Ora installningen ay inloppet automatiskt, kan samma flote reglera verkan av en servomotor for detta andamal. Motorn 54 payerkar vipphart sasom visas genom en excenter en svangbar arm 57, vilken uppbar tva sparrhakar 58, 59 ay vilka endera eller bada kunna hallas ur ingrepp med ett tandat hjul 61 genom ett vippkamorgan 62, som Sr forbundet genom lankar med fl5tet 53. SA snart en Okning eller minskning ay oyerskottspappersmassans niva tillater en av stangerna att komma i kontakt med hjulet 61, vrides hjulet steg for slog, och genom en kedja och en utvaxling vrides axeln 12 i riktningen for att Oka eller minska instrOmningen till separatorn, vilket är nodvandigt for att aterstalla oyerskottsstrommen till dess ursprungliga niva. Det kan ocksh finnas elf kamorgan, som vrides tillsammans med hjulet 61 for att hoja sta'ngen 58 eller 59 ut ur ingrepp, nar installningsgransen naffs. DA flera virvelseparatorer arbeta parallellt, kunna deras installningsanordningar sa kopplas, att belastningen alltid Sr lika fordelad mellan dem. Nar en hjalp- eller sekundarseparator 4— — anvandes for att astadkomma ytterligare be-handling av den renade pappersmassan, som utstrommar fran primarseparatorerna, kan det variabla inloppet far hjalpseparatorn. an- väudas for att reglera den utstrommande mangden av pappersmassa. If it Sr Onskyart that Ora installation ay the inlet automatically, the same float can regulate the action of a servomotor for this purpose. The motor 54 has a rocker arm as shown by an eccentric pivotable arm 57 which has two ratchets 58, 59 ay which either or both can be held out of engagement with a toothed wheel 61 by a rocker cam member 62 which is connected by links to the float 53. SA as soon as an increase or decrease in the level of the waste paper pulp allows one of the rods to come into contact with the wheel 61, the wheel is rotated step by step, and through a chain and a gear the shaft 12 is rotated in the direction to increase or decrease the inflow to the separator, which is necessary to restore the surplus current to its original level. There may also be eleven cam members which are rotated together with the wheel 61 to raise the rod 58 or 59 out of engagement when the installation border is napped. Since several vortex separators work in parallel, their installation devices can be connected in such a way that the load is always evenly distributed between them. When an auxiliary or secondary separator 4 is used to effect further treatment of the purified pulp flowing out of the primary separators, the variable inlet may pass the auxiliary separator. used to regulate the outflowing amount of pulp.

Claims

Patent claim:

A vortex separator, especially for pulp, consisting of a vortex container with a circular cross-section, a central outlet pipe projecting upwards out of the container from a point located between its spirits and a tangential inlet nozzle which tapers to a reduced and substantially rectangular cross-section for a helical vortex-forming conduit, which surrounds the outlet pipe and through which pulp is fed from the nozzle to the vortex container, characterized in that the vortex-forming conduit consists of a helical groove in the outer surface of a sleeve (5 or 23), which surrounds or forms part of the outlet pipe ( ) and is fitted and fills the upper part of the vortex container (1) or a cylindrical, upwardly directed extension (2) thereof.

Swirl separator according to claim 1, characterized in that the helical groove has a radial depth which extends from the spirit of the groove examining the nozzle (3).

Swirl separator according to claim 1 or 2, characterized in that the sleeve (5) is rotatable in relation to the vortex container (1).

Swirl separator according to claim 3, characterized by an installation device (12, 11, 9, 8), coated outside the vortex container (1) for rotating the sleeve (5) in and for varying the inlet to the vortex container across the sectional area.

Swirl separator according to claim 4, characterized by a float (53) resting on the material deposited by the separator near a pond (52), over which the material flows, and by means (54, 57, 58, 59, 61 , 62, 12, 11, 9, 8), regulated by the flow for automatic rotation of the sleeve (5) in order to vary the cross-section of the inlet of the vortex container, when the height of the hotel is different.

Swirl separator according to claim 4, characterized in that the arrangement of means (19, 17, 15) is made to vary the cross-sectional area of the outlet pipe (4) on suitable salt, as the cross-sectional area of the inlet is varied.

Swirl separator according to claim 6, characterized in that the sleeve (34) forms a downwardly extending extension of the outlet pipe (4) and carried a transverse displacement part (33), which cooperates with a similar displacement part (32) in the outlet pipe to vary the effective outlet area.

A vortex separator according to claim 6, characterized by a displacement part (15 or 25), which is movable from and to the transverse or along the outlet pipe (4) in order to vary its effective area, and a cam (19), which rotates together with the sleeve (5) to effect a reciprocating movement of the displacement part. Stockholm 1949. Kungl. Boktr. P. A. Norstedt Sr. Saner 400089 PI. I. ,, .. / .. / •••• ■ • ■■ •• ■ / Or 16 mt. fit am 6 ..................... ralwafir prblittz-regalitiA Pr 74 1111111111 11 PM I

9. B ism / 3 12 19 LITOG OF THE GENERAL STAFF