SE203846C1

SE203846C1 -

Info

Publication number: SE203846C1
Authority: SE
Publication date: 1965-01-01

Description

KLASS INTERNATIONELLSVENSK D21 f55 d:7/01 PATENT- OCH REGISTRERINGSVERKET Ans. 1860/1959 inkom den 26/2 1959 utlagd den 918 196 J R DUNBAR, VANCOUVER, CANADA Anordning for sortering av fibersuspensioner innefattande ett flertal samverkande, i samma riktning med samma hastighet roterbara valsar Foreliggande uppfinning avser en anordning for sortering av fibersuspensioner, t. ex. groysortering av pappersmassa i det forsta silningssteget for att avlagsna icke fardigkokade fiberknippen, massaknutar och andra grovre partiklar. CLASS INTERNATIONAL SWEDISH D21 f55 d: 7/01 PATENT AND REGISTRATION AGENCY Ans. The present invention relates to a device for sorting fiber suspensions, e.g. . groy sorting of pulp in the first screening step to remove uncooked fiber bundles, pulp knots and other coarser particles.

Anordningen enlist uppfinningen ar air det slag som framgar av ingressen till patentanspraket 1. Dylika sorteringsmaskiner aro kanda, som besta av en serie valsar, som alla rotera i samma riktning. Det at awn kant att anordna rannor i dylika valsar, som bilda en fran rat vinkel avvikande vinkel med valsens langdaxel, sd som exempelvis beskrives i den syenska patentskriften nr 73 015. Dessutom är ,det Mint att anordna valsar med rannor I rat vinkel mot valsens langdaxel, som arc sa arrangerade, att ryggarna pa en vals ligger mellan narliggande ryggar p0. narliggande valsar, sd som exempelvis framgar av den svenska patentskriften nr 68 843. The device according to the invention is of the type which appears from the preamble of patent claim 1. Such sorting machines are known as consisting of a series of rollers, all of which rotate in the same direction. It is possible to arrange grooves in such rollers, which form an angle deviating from the angle with the longitudinal axis of the roller, as described, for example, in the Syrian patent specification No. 73 015. long axis, as arc so arranged, that the ridges of a roller lie between adjacent ridges p0. adjacent rollers, sd which, for example, appear from the Swedish patent specification no. 68 843.

A.nordningen enligt uppfinningen kannetecknas huvudsakligen darav, att valsarna aro anordnade sa, att var och en av ryggarna melIan rannorna pa en vals i huvudsak tacker den appning, som astadkommes av en ranna i en intilliggande vals, sa. att oppningar med iitminstone i huvudsak .konstant tvarsnitt bildas mellan valsarna, yilka appningar Tara sig fram och ger i valsarnas axialriktning, da valsarna rotera. Harigenom äî det majligt att samtidigt astadkomma transversell forflyttning av materialet som sorteras och jamn sortering av detsamma. Den i .den s-venska patentskrif ten 68 843 beskrivna anordningen ger enhetlig sortering men ingen rarelse, medan den i den svenska patentskriften 73 045 beskrivna anordningea ger rarelse, .men ingen enhetlig sortering. The device according to the invention can be characterized mainly by the fact that the rollers are arranged in such a way that each of the ridges between the grooves on a roller substantially thanks to the opening which is provided by a groove in an adjacent roller, so to speak. that openings with at least substantially constant cross-sections are formed between the rollers, which openings advance and give in the axial direction of the rollers, as the rollers rotate. As a result, it is possible to simultaneously achieve transverse movement of the material being sorted and even sorting of the same. The device described in Swedish patent specification 68,843 gives uniform sorting but no sorting, while the device described in Swedish patent specification 73 045 gives uniformity but no uniform sorting.

Uppfinningen beskrives i det foljande un- der hanvisning till de bifogade ritningarna, van i fig. 1 är en perspektivbild av en grovsorteringsmaskin for pappersmassa, som uppvisar for foreliggande uppfinning kannetecknande drag, fig. 2 schematiskt visar ett langdsnitt genom en sorteringsmaskin, som uppvisar far uppfinningen kannetecknande drag, och fig. 3 visar en planvy av .nagra sadana valsar, som utgora en av de vasentliga komponenterna i den maskin, soul visas i fig. 1. The invention is described in the following with reference to the accompanying drawings, in which Fig. 1 is a perspective view of a coarse sorting machine for pulp, which has feature features for the present invention, Fig. 2 schematically shows a longitudinal section through a sorting machine, which has a Fig. 3 shows a plan view of some such rollers, which constitute one of the essential components of the machine soul shown in Fig. 1.

Enlist ritningarna innefattar den anordning, som ar foremal far foreliggande uppfinning, ett .flertal valsar 1, la, lb, lc . t. o. m. ii i den visade utforingsformen. Var och en av dessa valsar Or, som framgar av fig. 3, utbildad med ett flertal spar 2 av fyrkantsektion och med likformigt djup. Bred-den av vart spar är i den visade utforingsformen lika med bredden ay den rygg 3, som bildas mellan tva. spar, och sparen aro anordnade sa, att var rygg 3 pa en vals i huvudsak tacker den appning, som astadkommes av ett spa'r 2 i intilliggande vals. Som senare kommer att framsa aygransa sparen, som salunda tackas av ryggarna pa en intilliggande vals, Oppningarna for de godtagbara partiklarna, vilka appningars storlek forblir konstant trots valsarnas rotation pa satt som senare kommer att bli fullt klart Intilliggande valsars lagen i forhallande till varandra ha stor betydelse vid tillampning ay foreliggande uppfinning. Var rygg pa. en vats maste ligga mittfar och bor lampligen i havudsak tacka motsvurande spar i intilliggande vals. I beaktande av den foljande beskrivningen kommer det att kunna inses, att vii-ken som heist annan anordning, t. ex. en anordning av sparen pa en vals mitt for sparen pa en annan vals, kommer att resultera i en hela tiden vaxlande storlek pa oppningarna, Dupl. kl. 1 a: 21 2 vilket aven skulle utsatta dot material, som passerar mellan valsarna, for en icke onskad klippverkan. According to the drawings, the device which is the subject of the present invention comprises a plurality of rollers 1, 1a, 1b, 1c. t. o. m. ii in the embodiment shown. Each of these rollers Or, as shown in Fig. 3, is formed with a plurality of grooves 2 of square section and of uniform depth. The width of each groove in the embodiment shown is equal to the width of the ridge 3 formed between two. savings, and the savings are arranged so that each ridge 3 on a roll essentially owes the opening provided by a spa 2 in the adjacent roll. The later openings for the acceptable particles, which the size of the openings remains constant despite the rotation of the rollers in a way which will later become fully clear, are the law of the adjacent rollers in relation to each other. significance in the application of the present invention. Be back. a vats must lie the middle father and should suitably in the sea mainly thank the corresponding spears in the adjacent waltz. In view of the following description, it will be understood that vii-ken as heist other device, e.g. an arrangement of the grooves on one roller opposite the grooves on another roller, will result in an ever-changing size of the openings, Dupl. at 1 a: 21 2 which would also expose dot material, which passes between the rollers, to an undesired cutting effect.

Aven om i den visade utfOringsformen sparen ha samma bredd som ryggarna mellan sparen fir data icke nodvandigt for tilla.mpning av uppfinningen. Spann kunna vara avsevart mycket smalare an ryggarna daremellan, beroen.de pa typen av det material, som shall hindras att passera, °eh beroende pa graden av noggrannhet ach separation som fordras. Om sparen ara smalare an ryggarna, ma.ste de ha lika inbordes avstand, sa att var oak en av ryggarna i en. vals i huvudsak tacker den oppning, som astadkommes av ett spar i en intilliggande yak Vid den foredragna utforingsformen, som hr den, som visas pa ritningarna, aro spare.n snedstallda med avseende ph rotationsaxelns riktning, °oh intill varandra Magna valsar ha sparen anordnade sa, att de arc snedstallda i motsatta riktningar, vilket tydligt framgar av fig. 2. Although in the embodiment shown the spares have the same width as the ridges between the spares for data not necessary for applying the invention. Spans can be considerably narrower than the ridges in between, depending on the type of material to be prevented from passing, depending on the degree of accuracy and separation required. If the spares are narrower than the backs, they must have the same inboard distance, so that each of the backs was in one. roller mainly thanks to the opening provided by a groove in an adjacent yak. In the preferred embodiment, as shown in the drawings, the grooves are inclined with respect to the direction of the axis of rotation, said that the arcs are inclined in opposite directions, as is clear from Fig. 2.

Sam framhallits fir detta emellertid blott den foredragna utforingsformen. Om det av nagon anledning skulle vara att foredraga att anordna sparen vinkelratt mot rotationsaxelns riktning kan detta mycket val ;toms. Den visade utforingsformen erbjuder emellertid vissa fOrdelar, s.om senare komma att framga. However, only the preferred embodiment has been emphasized for this. If for any reason it would be preferable to arrange the spares perpendicular to the direction of the axis of rotation, this can be very toms. However, the embodiment shown offers certain advantages, as will be seen later.

Anordningen av en vals med spar, belagna och anordnade ph' beskrivet satt, xnaste noga sarskiljas fran en skruvvaxel. Ett i form av en skruv framstallt spar skulle icke kunna godtagas far det andama.1, sam foreliggande uppfinning avser, emedan, som senare shall framga, en sadan konstruktian kontinuerligt skulle forflytta avfallspartiklar at ena sidan av maskinen i stallet fOr att bibringa dem en riirelse i maskinens langdrildning, vilket astadkommes vid en maskin enligt denna uppfinning. Detta skall detaljerat beskrivas langre fram. Den likformiga paverkningen for astadkommande air en langsgaende rorelse utg6r ett av foreliggan.de uppfinnings kfinnetecken. The arrangement of a roller with grooves, coated and arranged ph 'as described, is almost carefully separated from a screw shaft. A spar produced in the form of a screw could not be accepted for the breath.1, as the present invention relates, since, as will be seen later, such a construction would continuously move waste particles on one side of the machine in the stable to impart a movement to them. in the longitudinal drilling of the machine, which is achieved in a machine according to this invention. This will be described in detail later. The uniform effect of producing longitudinal motion constitutes one of the hallmarks of the present invention.

Samma verkan som yid snedstallda, skurna spar av fyrkantsektian kan erhallas om var rulle ar framstalld av ett flertal skivor av tva olika diametrar, vilka ski-var aro av samma tjocklek ach Oro snedstallda i fOrhallande till valsens. axelriktning. De snedstallda spar av fyrkantsektion, vartill i det foljande kommer att hanvisas i beskrivning och patentansprak, far dad Or endast anses .ange en form eller en effekt has valsarna, oavsett pa vilket salt sparen och valsarna framstallts. The same effect as in oblique, cut grooves of the square section can be obtained if each roll is made of a plurality of discs of two different diameters, which discs are of the same thickness and are inclined in relation to the roller. shoulder direction. The oblique grooves of square section, to which reference will be made in the following in the description and patent claims, may only be considered if the shape or effect of the rollers has, regardless of the salt on which the grooves and rollers are made.

Valsarnas in... ii axlar aro roterbara i samma riktning och med gamma varvtal och valsarna aro anslutna till en raterande kraftkalla, sa att valsarna kunna bringas. att rotera ph detta satt. The shafts of the rollers in ... ii are rotatable in the same direction and at gamma speeds and the rollers are connected to a rotating force so that the rollers can be brought. to rotate ph this set.

Axlarna kunna bringas att rotera genom kedje-, band- eller kuggdrivning, anordnad vilket sam heist lämpligt satt med nOdvandig anslutning under varvtalsreducering till en motor. Emedan denna drivanordnings detaljer lake utgora flagon del av foreliggande uppfinning ach emedan de utan vidare kunna forstas av den ph anuldet kun.nige ha de icke ibeskrivits eller utritats. The shafts can be made to rotate by chain, belt or gear drive, arranged which suitably sat with the necessary connection during speed reduction to a motor. Since the details of this drive device form part of the present invention and because they can be readily understood by the present invention, they have not been described or drawn.

Pappersmassa eller nagot annat material, som skall sorteras, tillfores till oversidan av de roterande valsarna. Det forhallandet, att valsarna rotera i samma riktning och med samma varvtal, medfor att de oppningar, som begransas av sidorna och hoax-len i ett spar och overytan av motsvarande rygg ph intillliggande vals, forbli av konstant storlek, och i sort bestammer denna oppning starleken pa de godtagbara partiklar, som kunna passera genom valsarna och uppsamlas under dem. Om valsarna Oro fiirsedda med snedstallda spar som framgar av fig. 1, bringas materialet ovanfor valsarna att oscillera i tvarriktningen ph grund air sparens inverkan, vilken likformiga tvarrorelse sakerstaller en konstant omskakning av materialet ovanfor valsarna, och ph grund darav en fullstandig sortering. Denna rorelse bidrager ocksa till att Oppningarna icke bliva igensatta. Pulp or other material to be sorted is fed to the top of the rotating rollers. The tendency of the rollers to rotate in the same direction and at the same speed means that the openings bounded by the sides and hooks in a groove and the upper surface of the corresponding ridge adjacent to the roll remain of a constant size, and in variety this opening determines the size of the acceptable particles, which can pass through the rollers and collect under them. If the rollers are provided with oblique grooves as shown in Fig. 1, the material above the rollers is caused to oscillate in the transverse direction due to the action of the air save, which uniform transverse movement ensures a constant shaking of the material above the rollers, and therefore a complete sorting. This movement also contributes to the openings not being clogged.

Vid en utfOringsform ay en maskin enligt foreliggande uppfinning, tillverkad fOr graysartering av pappersmassa, hade valsarna en ytterdiameter ay c:a 50 mm (2") ach sparen more c:a 6 mm (1(4") breda och c:a 6 mm (1/4") djupa. Ryggarna mellan sparen more ocksa 6,35 mm breda. Sparen voro snedstallda en vinkel air mellan 180 och 0 i forhallande till rotationsaxelns riktning. Maskinen var f5rsedd med anordningar for tillforsel av den massa, som skulle silas, vid ena anden av raden ay valsar. Vid den visade utforingsformen avger ett rnassainlopp 4 massan till en. behallare 5, varifran den flodar Over en skarmplat 6 for att tillforas till oversidan ay de raterande valsarna. In one embodiment of a machine according to the present invention, made for gray sorting of pulp, the rollers had an outer diameter of about 50 mm (2 ") and the spar more about 6 mm (1 (4") wide and about 6 mm (1/4 ") deep. The ridges between the grooves were also 6.35 mm wide. The grooves were inclined at an angle of air between 180 and 0 in relation to the direction of the axis of rotation. In one embodiment of the row of rollers, in the embodiment shown, a rassassa inlet 4 delivers the mass to a container 5, from which it flows over a screen plate 6 to be fed to the upper side of the rotating rollers.

Slam framghr av ritningarna aro de tre sista valsarna 1g, lh och ii i raden av valsar placerade hagre an de ovriga, och de avfallspartiklar, sona bringas att forflytta sig fram Over maskinen frail vals till vals, mains upp- och avgar genom ett avlopp 7 for avfall, under det att de godtagbara partiklarna avga genom ett avlopp 8 under valsarna. Ett flertal spritsar 9, 9a, 9b kunna anordnas under valsarna fOr att bortspola godtagbara partiklar frail valsarna och fOr att bringa dem att forflytta sig mot avloppet, och ett flertal sprit- 3 sar 10, 10a, 10b kunna anordnas, lampligen nara maskinens avloppsande, ovanfor valsarna for att onabesorja, att alla godtagbara partiklar spolas genom Oppningarna och genom avloppet, sa att de kunna pasera under valsarna. Om. det är .nodvandigt eller tillradligt kunna bojliga fingrar eller skraporgan anordnas att ersatta den ena eller den andra eller bada av dessa spritssatser. Sludge appears from the drawings are the last three rollers 1g, lh and ii in the row of rollers placed hagre than the others, and the waste particles, sona are brought to move forward Over the machine frail roll to roll, mains up and down through a drain 7 for waste, while the acceptable particles discharge through a drain 8 under the rollers. A plurality of nozzles 9, 9a, 9b may be arranged below the rollers to flush acceptable particles from the rollers and to cause them to move towards the drain, and a plurality of nozzles 10, 10a, 10b may be arranged, suitably near the drain of the machine, above the rollers to ensure that all acceptable particles are flushed through the openings and through the drain so that they can pass under the rollers. If. it is necessary or advisable for flexible fingers or scraper means to be arranged to replace one or the other or both of these liquor sets.

Storleken pit valsarna och sparens diniensioner bestammas i enlighet med de krav, som betingas av de onskade silningsegenskaperna. Det är uppenbart, att ju mindre oppningarna valjas, ju mindre Mir storleken pa de storsta godtagbara partiklarna. En serie rullar, som genomslappa godtagbara partiklar av successivt minskande storsta storlek skulle kunna anvandas vid vissa tillampningar. The size of the pit rollers and the dimensions of the spare are determined in accordance with the requirements, which are conditioned by the desired screening properties. It is obvious that the smaller the apertures, the smaller the size of the largest acceptable particles. A series of rollers, which pass through acceptable particles of successively decreasing largest size, could be used in certain applications.

Den totala avsaknaden av vibrationer i en =skin enligt foreliggande uppfinning fir en av dess framsta kannetecken, liksom aven det forhallandet, att de roterande valsarna aro, sjalvrensande och ej ha flagon benagenhet bli igensatta, vilket sker vid sadan massasorterare, som en maskin enligt uppfinningen fir avsedd att ersatta. The total absence of vibrations in a machine according to the present invention is due to one of its foremost features, as well as the fact that the rotating rollers are self-cleaning and do not have a flake tendency to become clogged, as happens with such a pulp sorter as a machine according to the invention. fir intended to replace.

Uppfinningen har beskrivits under Mavisning till en f6redragen utforingsform. Del bar emellertid inses, att uppfinningen lace ãr begransad till vissa bestamda konstruktionsdetaljer enligt ovan, och sadana utfOringsformer, som svara mot den uppfinningstanke, som definieras i de bifogade anspraken amfattas aven av uppfinningen. The invention has been described under Referring to a Preferred Embodiment. It should be understood, however, that the invention is limited to certain particular constructional details as defined above, and such embodiments as correspond to the inventive concept defined in the appended claims are also encompassed by the invention.

Claims

Patent claims:

An apparatus for sorting fiber suspensions comprising a plurality of cooperating, same direction rotatable rollers, each formed with a plurality of spaced apart grooves, which are spaced apart and inclined relative to the axis of rotation of the roll, wherein the grooves in adjacent rollers are inclined in opposite directions and intersect at an acute angle, characterized in that the rollers are arranged so that each of the ridges between the grooves on a roller substantially extends to the opening provided by a groove. in an adjacent roll, said that apertures with Itmin.stone substantially constant cross-section Midas between the rollers, which apertures move 'forward and Ater in the axial direction of the rollers, as the rollers rotate.

2. Device according to claim 1, characterized in that each roller comprises a plurality of resiliently arranged discs with two different diameters, so that grooves are formed between discs of larger diameter.

3. Device according to patent claims 1 and 2, characterized in that the rollers are arranged with inboard parallel axes.

4. Device according to the patent claims, 1 () eh 2, characterized in that the width of the grooves is substantially equal to the width of the ridges between the grooves.

5. Device according to patent claim 2, characterized in that the discs with the Iva different diameters have substantially the same thickness.

Device according to patent claims 1-5, characterized in that the spares have a square section.

7. Device according to claims 1-6, characterized in that it comprises an inlet for fiber suspensions, which communicates with the first air etit several successively arranged rollers, a drain under the rollers for acceptable particles and an outlet, arranged after the last of the rollers , for air-making of waste particles.

8. Device according to patent claims 1-7, characterized in that the rollers have an outer diameter of about 50 mm oak that the grooves are about 3-6 mm wide and about 3-6 mm deep.

9. Device according to claims 1-8, characterized in that the spares are inclined at an angle of 70 ° -72 ° in relation to the axes of rotation of the rollers. Cited publications: Patents from Sweden 68,843, 73,045; United Kingdom 569018; Germany 14810 8.