SE522413C2 - Device for rotating filters - Google Patents
Device for rotating filtersInfo
- Publication number
- SE522413C2 SE522413C2 SE0201691A SE0201691A SE522413C2 SE 522413 C2 SE522413 C2 SE 522413C2 SE 0201691 A SE0201691 A SE 0201691A SE 0201691 A SE0201691 A SE 0201691A SE 522413 C2 SE522413 C2 SE 522413C2
- Authority
- SE
- Sweden
- Prior art keywords
- filter
- air
- liquid
- spray
- rotation
- Prior art date
Links
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
anno» »unna 522 413 -2- Uppfinningen kännetecknas vidare av, att spritssystemet för luft företrädesvis anordnas, i rotationsriktningen, före spritssystemet för vatten, samt att varje luftspritsdysas spritsningsyta skall täckas, i rotationsriktningen, av g eller flera efterföljande vattenspritsdysors spritsningsyta. The invention is further characterized in that the spraying system for air is preferably arranged, in the direction of rotation, before the spraying system for water, and that the spraying surface of each air spray nozzle must be covered, in the direction of rotation, by the spraying surface of g or fl subsequent water spray nozzles.
I undantagsfall kan dock vattenspritssystemet placeras före luftspritssystemet och i så fall skall varje vattenspritsdysas spritsningsyta täckas av en eller flera luftspritsdysors spritsningsyta Uppfinningen skall närmare beskrivas med stöd av bifogade ritning.In exceptional cases, however, the water spray system may be placed before the air spray system, in which case the spray surface of each water spray nozzle must be covered by the spray surface of one or more air spray nozzles. The invention must be described in more detail with the aid of the accompanying drawing.
Fig. 1 visar ett längdsnitt efter linjen I - I i fig. 2.Fig. 1 shows a longitudinal section along the line I - I in fi g. 2.
Fig. 2 visar ett tvärsnitt efter linjen H - 11 i fig. 1.Fig. 2 shows a cross section along the line H - 11 in fi g. 1.
Fig. 3 visar ett snitt efter linjen HI - III i fig. 1.Fig. 3 shows a section along the line HI - III in fi g. 1.
Fig. 4 visar en vy efter linjen IV -IV i fig. 1. I denna figur har dock endast spritssystemen och filterrotorn visats.Fig. 4 shows a view along the line IV -IV in fi g. 1. In this figure, however, only the spirit systems and the rotlterrotor have been shown.
Uppfinningen skall närmare beskrivas med stöd av bifogade ritning Filtret består av en i ett filtertråg 2 anordnad filterrotor 1, vilken bringas att rotera medelst en drivanordning 3. Filterrotom 1 kan bestå av en enda filterskiva 4 eller altemativt flera filterskivor 4 anordnade efter varandra i axiell led. Filterskivan 4 är enligt fig. 1 försedd med filterorgan 5 och 6 på filterskivans sidor och filterorgan 7 rtmt periferin. (Alternativt kan filterorgan vara anordnade endast på sidoma eller endast nmt periferin).Ovanför en utloppsanordning 10 är ett spritssystem 11 , 12 och 13 för luft anordnat samt ett spritssystem 14, 15 och 16 för vatten anordnad. Utloppsanordningen 10 för grovfasen består av ett tråg 16 och en transportskruv 17.The invention will be described in more detail with the aid of the accompanying drawing. The filter consists of an filter rotor 1 arranged in a filter tray 2, which is caused to rotate by means of a drive device 3. The filter rotor 1 may consist of a single filter disc 4 or alternatively your filter discs 4 arranged successively in axial joints. . The filter disc 4 is according to fi g. 1 provided with filter means 5 and 6 on the sides of the ivlter disk and organlter means 7 rtmt the periphery. (Alternatively, filter means can be arranged only on the sides or only near the periphery). Above an outlet device 10, an alcohol system 11, 12 and 13 for air and an alcohol system 14, 15 and 16 for water are arranged. The outlet device 10 for the coarse phase consists of a trough 16 and a transport screw 17.
Filtrets funktion är följande.The function of the filter is as follows.
Suspensionen tillföres vid inloppet 20, varvid en inre nivå 21 och en yttre nivå 22 erhålles. Genom att den inre nivån 21 anordnas högre än den yttre nivån 22 erhålles ett filterskikt på filterorganets eller filterorganens insida, vilket fïlterskikt vid rotationen transporteras upp till spritsanordningarna för luft och vatten.The suspension is supplied at the inlet 20, whereby an inner level 21 and an outer level 22 are obtained. By arranging the inner level 21 higher than the outer level 22, an filter layer is obtained on the inside of the filter means or filter means, which filter layer is transported up to the spraying devices for air and water during the rotation.
Genom ändring av förhållandet mellan stängda/öppna lultspritsdysor 23 och öppna/stängda vattenspritsdysor 24 kan utgående grovfaskoncentrationen regleras stegvis. vana; »man 522 413 -3- Då filterskiktet vid rotationen kommer upp till en eller flera öppna luftspritsdysor 23 avtages filterskiktet i dessa dysors verknjngsområde, under det att filterskiktet passerar de stängda lufispritsdysorna. Medelst de öppna spritsdysorna 24 i vattenspritssystemet avtages sedan de resterande delarna av filterskiktet. Lättfasfralnionen avgår via utloppet 25 och grovfasfmktionen via utloppet 26.By changing the ratio between closed / open liquor nozzles 23 and open / closed water spray nozzles 24, the outgoing coarse phase concentration can be regulated step by step. habit; »Man 522 413 -3- When the filter layer comes up to one or more of the open air spray nozzles 23 during rotation, the filter layer is removed in the area of operation of these nozzles, while the filter layer passes the closed air spray nozzles. By means of the open spray nozzles 24 in the water spray system, the remaining parts of the filter layer are then removed. The light phase function exits via the outlet 25 and the coarse phase function via the outlet 26.
Lämpligen avstänges den eller de, radiellt sett, innersta luftspritsdysorna 23 i första hand. Anledningen härtill är, att de delar av filterskiktet, som luftspritsdysorna avtagit, har hög koncentration (t. ex. 6 %) och om dessa delar av filterskiktet vid smala ñlterskívor med filterorgan på sidorna har tendens att fastna kommer dessa delar att sköljas ut av spritsvatten från de ovanför belägna vattenspritsdysorna 24. Detta är också anledningen till att vid smala filterskivor är lämpligt att anordna spritssystemet för lufi, i rotationsríktriingeri, före spritssystemet för vatten.Suitably, the radially innermost air spray nozzle (s) 23 is turned off in the first place. The reason for this is that the parts of the filter layer which the air spray nozzles have removed have a high concentration (eg 6%) and if these parts of the filter layer in the case of narrow filter discs with filter means on the sides have a tendency to stick, these parts will be rinsed out of spray water. from the water spray nozzles located above 24. This is also the reason why, in the case of narrow filter discs, it is suitable to arrange the spray system for lu fi, in rotary direction, before the spray system for water.
I praktiken kommer ofiast ett sådant förhållande mellan öppna och stängda luft- och vattenspritsdysor väljas så, att så hög koncentration som möjligt erhålles, dock inte högre än att grovfasen får en rinnande koncistens (under ca 3 % vid fibermassasuspensioner), innebärande, att transportskruven 17 kan eliminerasIn practice, no such ratio between open and closed air and water spray nozzles will be chosen so that as high a concentration as possible is obtained, but not higher than that the coarse phase has a flowing consistency (below about 3% in bulk mass suspensions), meaning that the transport screw 17 can be eliminated
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0201691A SE522413C2 (en) | 2002-06-04 | 2002-06-04 | Device for rotating filters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0201691A SE522413C2 (en) | 2002-06-04 | 2002-06-04 | Device for rotating filters |
Publications (3)
Publication Number | Publication Date |
---|---|
SE0201691D0 SE0201691D0 (en) | 2002-06-04 |
SE0201691L SE0201691L (en) | 2003-12-05 |
SE522413C2 true SE522413C2 (en) | 2004-02-10 |
Family
ID=20288067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0201691A SE522413C2 (en) | 2002-06-04 | 2002-06-04 | Device for rotating filters |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE522413C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005046839A1 (en) * | 2003-11-12 | 2005-05-26 | Nordic Water Products Ab | Apparatus for separating suspensions |
-
2002
- 2002-06-04 SE SE0201691A patent/SE522413C2/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005046839A1 (en) * | 2003-11-12 | 2005-05-26 | Nordic Water Products Ab | Apparatus for separating suspensions |
Also Published As
Publication number | Publication date |
---|---|
SE0201691D0 (en) | 2002-06-04 |
SE0201691L (en) | 2003-12-05 |
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Legal Events
Date | Code | Title | Description |
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NUG | Patent has lapsed |