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Machine translation
1. (WO2000058549) SCREENING APPARATUS INCLUDING TWO SCREEN MEANS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2000/058549    International Application No.:    PCT/SE2000/000421
Publication Date: 05.10.2000 International Filing Date: 03.03.2000
Chapter 2 Demand Filed:    18.10.2000    
IPC:
D21D 5/02 (2006.01), D21D 5/06 (2006.01)
Applicants: VALMET FIBERTECH AB [SE/SE]; S-851 94 Sundsvall (SE) (For All Designated States Except US).
FORSLUND, Kjell [SE/SE]; (SE) (For US Only).
WIKSTRÖM, Björn [SE/SE]; (SE) (For US Only)
Inventors: FORSLUND, Kjell; (SE).
WIKSTRÖM, Björn; (SE)
Common
Representative:
VALMET FIBERTECH AB; Sundqvist, Hans, S-851 94 Sundsvall (SE)
Priority Data:
9901148-8 29.03.1999 SE
Title (EN) SCREENING APPARATUS INCLUDING TWO SCREEN MEANS
(FR) APPAREIL DE TAMISAGE COMPRENANT DEUX TAMIS
Abstract: front page image
(EN)Screening apparatus for separating fiber suspensions, preferably pulp suspensions, comprising at least two co-axially arranged screen means. A first tubular screen means (6) has outside itself a first screen chamber (7) with an outer defining surface (8). A second tubular screen means (10) has inside itself a second screen chamber (11) with an inner defining surface (23). Such a screening apparatus tends to become relatively high and not to yield good screening results. According to the invention, the first screen means (6) is rotary and located on the rotor means (4). Inside the rotary screen means (6) a stator (17) with at least one pulse means (18) is provided. The smallest diameter of the outer defining surface (8) of the first screen chamber (7) is smaller than the greatest diameter of the inner defining surface (23) of the second screen chamber (11). The first screen chamber (7) is separated from the second screen chamber (11) and at least partially located inside the second screen chamber (11).
(FR)L'invention porte sur un appareil de tamisage permettant de séparer des suspensions fibreuses, de préférence des suspensions de pâte, et comprenant au moins deux tamis disposés axialement. Un premier tamis tubulaire (6) comporte, à l'extérieur, une première chambre (7) dotée d'une surface (8) délimitant l'extérieur. Un second tamis (10) tubulaire comporte, à l'intérieur, une seconde chambre (11) dotée d'une surface (23) délimitant l'intérieur. Cette disposition tend à rendre l'appareil de tamisage relativement haut et n'est pas appropriée pour produire un bon tamisage. Selon cette invention, le premier tamis (6) est rotatif et est placé sur le rotor (4). A l'intérieur du tamis rotatif (6) est ménagé un stator (17) pourvu d'au moins un dispositif à impulsions (18). Le plus petit diamètre de la surface (8) délimitant l'extérieur de la première chambre (7) est inférieur au plus grand diamètre de la surface (23) délimitant l'intérieur de la seconde chambre (11). La première chambre (7) est séparée de la seconde (11) et placée au moins partiellement à l'intérieur de celle-ci.
Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ, DE, DK, DM, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)