Uppfinnare: K F 0 Jakobson FOreliggande uppfinning avser ett fOrfarande och en anordning for utmatning av fibrost material, t. ex. mekanisk eller kemisk cellulosamassa fran en behallare, dar massa fore-Egger i form av ett sammanhangande block med en torrhalt av foretradesvis over 30 %.
Inventor: K F 0 Jakobson The present invention relates to a method and a device for discharging fibrous material, e.g. mechanical or chemical cellulose pulp from a container, the pulp pre-Egger in the form of a continuous block with a dry content of preferably more than 30%.
Det är kant att for utmatning av exempelvis träflis fran rektanguldra eller cirkulara bingar eller silor av olika slag anvanda utmatningsanordningar belagna i bingarnas nedersta del eller som utgora bingarnas botten. Dessa utmatningsanordningar kunna besta av Oppningsbara bottenluckor, roterbara, plana eller koniska bottnar med avskrapningsorgan, avskrapningsanordningar, som vandra Over bingens botten mot en oppning i bingens vagg, eller skruvar, som kunna Tara stationara eller sidovandrande Over en fast botten etc. liannetecknande fOr de anordningar, som hittills kommit till anyandning ar, att det material, som shall lagras, t. ex. trans, infores i bingens oversta del men uttages fran den nedersta delen. Ovanstaende anordningar kunna icke anvandas, om cellulosamassan skall lagras i form av ett sammanhangande block, da dess struktur gar, att den latt hanger upp sig och bildar bryggor Indian bingens vaggar. Massan bildar vidare mycket latt fOrhardnader och storre klumpar, om den tvangsvis skall matas ut genom en oppning, och igensatter mycket latt utmatningsskruvar pa grund av sina fibrosa och klibbiga egenskaper samt sin stora lure sammanhallningsfOrmaga. It is possible to use, for example, wood chips from rectangular or circular bins or silos of various kinds for discharging discharge devices located in the lower part of the bins or which form the bottom of the bins. These discharge devices may consist of openable bottom hatches, rotatable, flat or conical bottoms with scraping means, scraping devices which migrate over the bottom of the bin towards an opening in the cradle of the bin, or screws which may be stationary or laterally movable over a fixed bottom etc. , which has hitherto come to anyandand is, that the material to be stored, e.g. trans, is inserted in the upper part of the bin but is removed from the lower part. The above devices can not be used if the pulp is to be stored in the form of a continuous block, as its structure causes it to hang up easily and form bridges in the cradles of the Indian bin. The mass also forms very easily hardeners and larger lumps if it is to be forced out through an opening, and clogs very easily discharge screws due to its fibrous and sticky properties as well as its large lure cohesive capacity.
Det utmarkande for de till dessa anordningar horande bingarna är, att dessa aro mycket hOga i forhallande till bottenarean. Salunda bildas hoga materialpelare, som utova ett starkt stigande tryck mot bottnen, vilket Dupl. kl. 55 b: 5/ innebar, att mycket hogre volymvikt erhalles i bottenskiktet fin i det ovre skildet. Detta har till foljd, att utmatningen forsvaras. Bingafnas form innebar aven, att en med material fylld binge Sr om011ig att inspektera invandigt, vilket Sr av vdsentlig nackdel, speciellt vintertid, da frysrisk foreligger i framfOr allt de delar av materialet, corn aro hogre komprimerade. Om frysningen intraffar, omajliggores utmatningen, d'a man icke kan bryta isar on lasgora materialet. Dessa oldgenheter elimineras enligt foreliggande uppfinning. The distinguishing feature of the bins belonging to these devices is that they are very high in relation to the bottom area. Salunda forms high material pillars, which exert a strongly rising pressure towards the bottom, which Dupl. at 55 b: 5 / meant that a much higher volume weight is obtained in the bottom layer fine in the upper shield. This means that the output is defended. The shape of the binafna also meant that a binge filled with material was difficult to inspect internally, which was of significant disadvantage, especially in winter, when there was a risk of freezing, above all the parts of the material that were more compressed. If freezing occurs, the discharge is impossible, because ice cannot be broken on the lasgora material. These antiquities are eliminated according to the present invention.
Det for forfarandet enligt uppfinningen utmarkande ar, att massan i form av ett block ledes mot en nedanfor behallarens ena ande belagen fieka ph sadant salt, aft franire delen av massablocket brytes och faller ned i fickan, varifran massan utinatas med en transportor. Massan ledes lampligen nppat pa transport8ren. The distinguishing feature of the process according to the invention is that the mass in the form of a block is led to a salt which is coated below one of the containers, so that the pulp block breaks and falls into the pocket, from which the mass is discharged with a conveyor. The mass is led appropriately on the conveyor belt.
Det I Or anordningen utmarkande ar, att ragerbehallarens ena kortvagg helt saknas -och att i behallarens botten aro anbragta transportanordningar for framforande av massan I form av ett block till den oppna kortsidan, nedanfor vilken Sr anordnad en ficka, till vii-ken en transport& Or- ansluten. Denna strakker sig lampligen snett uppat fran fickan:s botten. I fickan kan en indikator vara anbragt, som reglerar massatillforseln. Vid transporWrens ovre del kan en anordning for astadkommande av en bestamd tjocklek pa den utmatade massan vara anbragt. Vid den ande av behallaren, som dr motsatt den Oppna kortsidan, Sr lampligen anbragt en anordning for avstrykning och utjamning av det ovre partiet av den i behallaren framf8rda massan. 13a bifogade ritning askadliggores en utfo- .- 2— •— ringsform av en anordning enligt uppfin, ningeii for uttagning av cellulosamassa fran en lagerbehallare. Figuren visar en langdseklion genom anordningen. The distinguishing feature of the device is that one short wall of the rager container is completely missing - and that transport devices are arranged in the bottom of the container for conveying the mass in the form of a block to the open short side, below which a pocket is arranged, to which a transport - connected. This extends obliquely obliquely upwards from the bottom of the pocket. An indicator can be placed in the pocket, which regulates the mass supply. At the upper part of the conveyor a device for achieving a certain thickness of the discharged mass can be arranged. At the end of the container, which is opposite the open short side, a device for smoothing and leveling the upper part of the mass conveyed in the container is suitably arranged. 13a is an embodiment of a device according to the invention for removing cellulose pulp from a storage container. The figure shows a longitudinal clion through the device.
Massan tillfores genom en bandtransportor eller frail en overliggande behallare vid den ena anden av en lagerbehallare 1, som är langstrackt och oppen upptill. Lagerbehallarens 1 botten bestdr av en lamelltransportor 2, som for massan i form av ett liggande block mot behallarens 1 andra kortsida, vilken Ar helt appen. Nedanfor denna oppna kortsida finnes en doseringsficka 3 och fran denna ficka leder en elevator 4 snett appal. NOr massan anlander till den oppna kortsidan oeh matas fram aver tran.sportorens 2 and-vals 5, brytes massablocket och faller med i fickan 3 och transporteras darifran med elevatorn 4. I fickan 3 Ar anbragt en indikator 6, som, nar den Ar belt tackt av massa, avbryter transportorens 2 rarelse och som nar den blir fri lean massa Ater igangsatter transporthren 2. Om na.mligen denna skulle fortsatta sin rorelse, skulle massan komma att med skim tyngd pressas mot elevatorn 4, sa att driftstopp intraffade eller att en okontrollerbar utmatning uppstode. Vid inloppet till lagerbehallaren 1 finnes en genombruten transportor 7, som Or forsedd med medbringare, t. ex. kattingar, som slapa Over den bildade massatoppen, sa att denna avplanas for att inmatningen i lagerbehallaren skall kunna fortgd, om transportoren 2 Ar stillastaende. Vid elevatorns 4 Ovre del Ar anbragt en utjamningsvals, I. ex. en med piggar eller liknande forsedd vals 8, som avplanar massaskiktet pa elevatorn, sa att detta alltid avgar med en viss bestamd tjocklek och Overskollsmassa faller ned mot fickan 3. Valsen 8 Ar installbar i hojdled for reglering av utmatningsmangden och denna kan varieras ytterligare genom att elevatorns hastighet andras. The mass is fed through a belt conveyor or frail an overlying container at one end of a storage container 1, which is elongated and open at the top. The bottom of the storage container 1 consists of a lamella conveyor 2, which carries the mass in the form of a horizontal block towards the other short side of the container 1, which is completely the app. Below this open short side there is a dosing pocket 3 and from this pocket an elevator 4 leads obliquely. When the mass arrives at the open short side and is fed forward over the conveyor 2 and roller 5, the mass block is broken and falls into the pocket 3 and transported from there with the elevator 4. In the pocket 3 an indicator 6 is placed, which, when thanks to the mass, the conveyor 2 interrupts the movement and as when it becomes free lean mass again initiates the conveyor 2. If this were to continue its movement, the mass would be pressed with skim weight against the elevator 4, so that downtime occurred or that a uncontrollable output occurred. At the inlet to the storage container 1 there is an openwork conveyor 7, which Or is provided with a carrier, e.g. kittens, which slack Over the formed mass top, said that this is flattened so that the feeding in the storage container can continue, if the conveyor 2 Is stationary. At the upper part Ar of the elevator 4 a leveling roller is arranged, I. ex. a roller 8 provided with spikes or the like, which flattens the mass layer on the elevator, so that this always emits with a certain determined thickness and Overskoll mass falls down towards the pocket 3. The roller 8 is height-adjustable for regulating the discharge quantity and this can be further varied by the speed of the elevator of others.
Lagerbehallarens botten behOver givetvis icke sa.som pa ritningen besta av en lamelleller bandtransportor utan behallaren kan vara utrustad med en fast botten, i vilken medbringare Oro anordnade, som slapa massan mot den oppna kortsidan. The bottom of the storage container does not, of course, need to consist, as in the drawing, of a lamella or belt conveyor, but the container can be equipped with a fixed bottom, in which carriers Oro are arranged, which slacken the mass towards the open short side.
Beroende pA massans kvalitet, vilken ger olika rasvinkel, kan indikatorn 6 vara belagen pa olika stallen I fickan for erhallande av en lamplig mangd kvarvarande material, innan nasta dosering hunnit anlanda, Depending on the quality of the pulp, which gives different race angles, the indicator 6 can be coated in different places in the pocket to obtain a suitable amount of remaining material, before the next dosing has arrived.