SE504724C2 - Koncentreringspress - Google Patents
KoncentreringspressInfo
- Publication number
- SE504724C2 SE504724C2 SE9503591A SE9503591A SE504724C2 SE 504724 C2 SE504724 C2 SE 504724C2 SE 9503591 A SE9503591 A SE 9503591A SE 9503591 A SE9503591 A SE 9503591A SE 504724 C2 SE504724 C2 SE 504724C2
- Authority
- SE
- Sweden
- Prior art keywords
- press
- concentrated
- concentration
- rollers
- web
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
- D21F1/80—Pulp catching, de-watering, or recovering; Re-use of pulp-water using endless screening belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
- B01D33/042—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering whereby the filtration and squeezing-out take place between at least two filtering bands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
- B01D33/37—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in parallel connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/20—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using rotary pressing members, other than worms or screws, e.g. rollers, rings, discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/24—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using an endless pressing band
- B30B9/246—The material being conveyed around a drum between pressing bands
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Treatment Of Fiber Materials (AREA)
- Filtering Materials (AREA)
- Filtration Of Liquid (AREA)
Abstract
Description
15 20 25 30 35 504 724 koncentrerat material. Genom detta arrangemang undanröjes i stor utsträckning en återfuktning av det koncentrerade mate- rialet. Ytterligare förbättringar i detta avseende uppnås om i enlighet med ett föredraget utförande av uppfinningen de parallellt med varandra löpande banavsnitten sträcker sig uppåt från pressvalsarna. Med speciell fördel är de paral- lellt med varandra löpande banavsnitten omböjda upptill, för att avlämna det koncentrerade materialet åt ena sidan i för- hållande till pressen. Härigenom minskas ytterligare risken för återfuktning av det koncentrerade materialet och erhålles det senare i form av en sammanhängande, väsentligen jämntjock bana, som på enkelt och rationellt sätt kan tillföras exem- pelvis ett efterföljande ytterligare koncentreringssteg. 15 20 25 30 35 504 724 concentrated material. This arrangement eliminates to a large extent a wetting of the concentrated material. Further improvements in this respect are achieved if, in accordance with a preferred embodiment of the invention, the parallel running sections of web extend upwards from the press rollers. With special advantage, the parallel runway sections are bent at the top, to deliver the concentrated material to one side in relation to the press. This further reduces the risk of wetting the concentrated material and the latter is obtained in the form of a coherent, substantially evenly thick web, which can be added in a simple and rational manner, for example a subsequent additional concentration step.
Ytterligare för uppfinningen utmärkande drag och förde- lar anges i underkraven resp. framgår av efterföljande be- skrivning av några blott såsom exempel valda utföringsformer av uppfinningen.Further features and advantages characteristic of the invention are stated in the subclaims resp. appears from the following description of some exemplary embodiments of the invention.
Fig. 1 och 2 visar schematiskt i vertikal tvärsektionsvy en första resp. andra utföringsform av koncentrerings- pressen enligt uppfinningen.Figs. 1 and 2 schematically show in vertical cross-sectional view a first and second embodiment of the concentrating press according to the invention.
På ritningen är överensstämmande eller väsentligen över- ensstämmande detaljer ásatta samma hänvisningsbeteckning i de olika ritningsfigurerna. Den i fig. 1 visade koncentrerings- pressen uppvisar två pressvalsar 1, vilka är partiellt ned- sänkta i ett tràg 2, vilket här antages innehålla en massa- suspension 3, som skall koncentreras eller avvattnas. Massa- suspensionen tillföres genom ett inlopp 4 med hjälp av en icke visad tillförselpump.In the drawing, corresponding or substantially corresponding details are assigned the same reference numerals in the various drawing figures. The concentration press shown in Fig. 1 has two press rollers 1, which are partially immersed in a trough 2, which here is assumed to contain a mass suspension 3, which is to be concentrated or dewatered. The pulp suspension is supplied through an inlet 4 by means of a supply pump (not shown).
Pressvalsarna 1 är på känt sätt försedda med perforerade eller genombrutna mantlar 5, vilka i det genombrutna området partiellt omges av var sin ändlös bana 6, 7 av silduk, t.ex. viraduk av ett lämpligt plastmaterial. Såsom framgår av fig. 1, är åtmisntone de i massasuspensionen neddoppande partierna av pressvalsarnas 1 mantlar 5 omgivna av tillhörande silduks- bana. Pressvalsarnas 1 axeltappar är lagrade i tràggavlarna, varvid åtminstone den ena axeltappen 8 hos varje pressvals är 10 15 20 25 30 35 504 724 rörformig och ansluten till en icke visad pump eller annan undertryckskälla för bortskaffande av vätska, som inkommit i valsarnas 1 inre. Tätningar 9 inverkar på de pressnypet mot- satta sidorna av pressvalsarna 1 i ett område, där dessas mantel är täckt av tillhörande silduksbana 6, 7. Motsvarande tätningar (icke visade) tätar mot valsarnas 1 ändstycken el- ler gavlar, så att tràget 2 är slutet och ett övertryck på fördelaktigt sätt kan upprätthållas däri, för att befrämja avgángen av vätska från massasuspensionen 3 i tràget 2 till det inre av valsarna 1.The press rolls 1 are provided in a known manner with perforated or perforated sheaths 5, which in the perforated area are partially surrounded by their respective endless webs 6, 7 of screen cloth, e.g. wire cloth of a suitable plastic material. As can be seen from Fig. 1, the portions of the press rolls 5 of the press rollers 1 immersed in the pulp suspension are surrounded by the associated screen fabric web. The shaft pins of the press rollers 1 are mounted in the trough ends, at least one shaft pin 8 of each press roll being tubular and connected to a pump or other source of negative pressure (not shown) for disposing of liquid which has entered the interior of the rollers 1. Seals 9 act on the sides of the press rollers 1 opposite the press nip in an area where their jacket is covered by the associated screen web 6, 7. Corresponding seals (not shown) seal against the end pieces or ends of the rollers 1, so that the trough 2 is the end and an overpressure can advantageously be maintained therein, in order to promote the escape of liquid from the pulp suspension 3 in the trough 2 to the interior of the rollers 1.
De pressvalsarna l partiellt omgivande silduksbanorna 6, 7 löper vardera kring en brytvals 10. Från valsnypet till brytvalsarna 10 löper silduksbanorna uppåt i pilarnas 11 riktning väsentligen parallellt med varandra. Med 12 är be- tecknade mot silduksbanorna 6, 7 ansättbara spännvalsar för sträckning av dessa banor, medan 13 betecknar sprutmunstycken för renspolning av silduksbanorna.The press rollers 1 partially surrounding the screen webs 6, 7 each run around a breaking roller 10. From the roll nip to the breaking rollers 10 the screen webs run upwards in the direction of the arrows 11 substantially parallel to each other. Denoted by 12 are clamping rollers which can be used against the screen webs 6, 7 for stretching these webs, while 13 denote spray nozzles for flushing the screen webs.
Vid drift av koncentreringspressen enligt fig. 1 drivs pressvalsarna 1 i motsatta riktningar på sådant sätt, att de inbördes parallella avsnitten av silduksbanorna 6, 7 rör sig uppåt, samtidigt som massasuspensionen tillföres tråget 2 un- der övertryck samt undertryck upprättas i det inre av valsar- na 1. Suspensionen suges därvid mot de i tràget 2 neddoppan- de, silduksklädda valsmantelområdena och transporteras under avvattning till och genom valsnypet, medan vatten avgår genom de ihåliga valsaxeltapparna 8. Mellan de inbördes parallella banavsnitten transporteras den avvattnade massan 14 vidare uppåt till ett avgivningsställe, där schabrar 15 leder den koncentrerade massan in i en på avstånd ovanför pressvalsarna 1 belägen materialbortförselanordning 16. Åtminstone den ena pressvalsen kan vara rörlig mot och från den andra för in- ställning av pressnypet, och silduksbanorna 6, 7 kan vara försedda med konventionella, icke visade styrorgan för för- hindrande av vandring av silduksbanorna i sidled.When operating the concentrating press according to Fig. 1, the press rollers 1 are driven in opposite directions in such a way that the mutually parallel sections of the screen webs 6, 7 move upwards, at the same time as the pulp suspension is fed to the trough 2 under overpressure and underpressure is established in the interior of rollers. The suspension is then sucked against the roller cloth-covered roller cloth areas immersed in the trough 2 and transported during dewatering to and through the roller nip, while water passes through the hollow roller shaft pins 8. Between the mutually parallel web sections a further dewatered mass is transported to dispensing point, where scrapers 15 guide the concentrated mass into a material removal device 16 located at a distance above the press rollers 1. At least one press roll can be movable towards and away from the other for adjusting the press nip, and the screen webs 6, 7 can be provided with conventional , control means not shown for preventing migration of screen cloth rna sideways.
Den i fig. 2 visade utföringsformen överensstämmer i allt väsentligt med och_beskrives därför nedan endast i den utsträckning den skiljer sig från utföringsformen enligt fig. 1. Enligt fig. 2 är brytvalsen 10 för silduksbanan 6 även 10 504 724 rörlig i vertikal riktning för inställning av spänningen i banan 6. För banan 7 är anordnade två brytvalsar 17, 18 och en styrvals 19, varmed de parallellt med varandra löpande banavsnitten är omböjda àt vänster i figuren, för att avlämna den koncentrerade massan 14 i form av en sammanhängande, vä- sentligen jämntjock materialbana àt ena sidan i förhållande till pressen. I detta fall är den ena av brytvalsarna 17, 18 även rörlig i väsentligen horisonell led för inställning av spänningen i banan 7.The embodiment shown in Fig. 2 substantially corresponds to and is therefore described below only to the extent that it differs from the embodiment according to Fig. 1. According to Fig. 2, the breaking roller 10 for the screen web 6 is also movable in the vertical direction for setting the tension in the web 6. For the web 7, two breaking rollers 17, 18 and a guide roller 19 are provided, with which the running sections running parallel to each other are bent to the left in the figure, in order to deliver the concentrated mass 14 in the form of a continuous, substantially evenly thick web of material on one side in relation to the press. In this case, one of the breaking rollers 17, 18 is also movable in a substantially horizontal direction for adjusting the tension in the web 7.
Uppfinningen är icke begränsad till de ovan med hänvis- ning till ritningen beskrivna utföringsformerna utan kan rea- liseras på godtyckligt sätt inom ramen för den i patentkraven definierade uppfinningstanken.The invention is not limited to the embodiments described above with reference to the drawing, but can be realized in any manner within the scope of the inventive concept defined in the claims.
Claims (9)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9503591A SE9503591L (en) | 1995-10-13 | 1995-10-13 | Koncentreringspress |
JP9514974A JPH11513313A (en) | 1995-10-13 | 1996-10-03 | Concentrator press |
CA002234097A CA2234097A1 (en) | 1995-10-13 | 1996-10-03 | A concentrator press |
PCT/SE1996/001249 WO1997013572A1 (en) | 1995-10-13 | 1996-10-03 | A concentrator press |
AU73496/96A AU7349696A (en) | 1995-10-13 | 1996-10-03 | A concentrator press |
EP96935670A EP0956132A1 (en) | 1995-10-13 | 1996-10-03 | A concentrator press |
NO981640A NO981640L (en) | 1995-10-13 | 1998-04-08 | Konsentratorpresse |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9503591A SE9503591L (en) | 1995-10-13 | 1995-10-13 | Koncentreringspress |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9503591D0 SE9503591D0 (en) | 1995-10-13 |
SE504724C2 true SE504724C2 (en) | 1997-04-14 |
SE9503591L SE9503591L (en) | 1997-04-14 |
Family
ID=20399823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9503591A SE9503591L (en) | 1995-10-13 | 1995-10-13 | Koncentreringspress |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0956132A1 (en) |
JP (1) | JPH11513313A (en) |
AU (1) | AU7349696A (en) |
CA (1) | CA2234097A1 (en) |
NO (1) | NO981640L (en) |
SE (1) | SE9503591L (en) |
WO (1) | WO1997013572A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5226854B1 (en) * | 2011-12-21 | 2013-07-03 | ファナック株式会社 | Machining fluid filtration device for electric discharge machine |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU561765A1 (en) * | 1975-05-06 | 1977-06-15 | Научно-Исследовательский И Проектно-Конструкторский Институт Целлюлозного Машиностроения | Drum thickener |
-
1995
- 1995-10-13 SE SE9503591A patent/SE9503591L/en not_active IP Right Cessation
-
1996
- 1996-10-03 EP EP96935670A patent/EP0956132A1/en not_active Withdrawn
- 1996-10-03 AU AU73496/96A patent/AU7349696A/en not_active Abandoned
- 1996-10-03 WO PCT/SE1996/001249 patent/WO1997013572A1/en not_active Application Discontinuation
- 1996-10-03 JP JP9514974A patent/JPH11513313A/en active Pending
- 1996-10-03 CA CA002234097A patent/CA2234097A1/en not_active Abandoned
-
1998
- 1998-04-08 NO NO981640A patent/NO981640L/en unknown
Also Published As
Publication number | Publication date |
---|---|
SE9503591D0 (en) | 1995-10-13 |
JPH11513313A (en) | 1999-11-16 |
CA2234097A1 (en) | 1997-04-17 |
WO1997013572A1 (en) | 1997-04-17 |
NO981640D0 (en) | 1998-04-08 |
SE9503591L (en) | 1997-04-14 |
NO981640L (en) | 1998-06-08 |
EP0956132A1 (en) | 1999-11-17 |
AU7349696A (en) | 1997-04-30 |
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