Global Patent Index - EP 0971070 A1

EP 0971070 A1 2000-01-12 - Drying cylinder having a steam and condensate removal device, for making paper or board

Title (en)

Drying cylinder having a steam and condensate removal device, for making paper or board

Title (de)

Trockenzylinder mit Dampf und Kondensatabführungsanlage, für die Herstellung von Papier oder Pappe

Title (fr)

Cylindre sécheur avec dispositif d'évacuation des vapeurs et condensats, pour la fabrication de papier ou carton

Publication

EP 0971070 A1 (FR)

Application

EP 99401737 A

Priority

FR 9809013 A

Abstract (en)

The drying cylinder for a wet fiber web, of paper or cardboard, has an injection tube (5) to deliver vapor into its central chamber (6). The tube is fixed in relation to the cylinder half-shaft by a lubricating ring (11). The ring (11) has an opening (21) as a passage for blown vapor and the condensation for their removal from the half-shaft space (4). The space between the double wall (9) and the base (3) of the cylinder is divided into sectors by partitions (13). Each sector is linked to the ring (11) opening (21) in a regular cycle. The ring (11) remains static, while the sectors rotate with the cylinder to link them to the ring opening (21) on each rotation. The double wall (9) is centered on a cylindrical socket (12) which extends to the base (3) and is centered at it. The socket secures the ring (11) to the injection tube (5), and has openings (15) which match each sector and which give an escape for vapor and condensation to be removed. The ring (11), fixed to the injection tube (5), has a water lubricating action. The ring opening (21) is an axial window, cut on part of its length, located on the vertical plane of the cylinder under its axis.

Abstract (fr)

Le cylindre comporte un tube (5) permettant l'injection de vapeur dans la chambre centrale (6) ; ce tube est fixe, guidé par rapport au demi-arbre au moyen d'une bague autolubrifiante (11). Cette bague (11) comporte un orifice (21) qui permet le passage de la vapeur soufflée et des condensats afin de les évacuer dans la cavité (4) du demi-arbre (2). L'espace entre la double paroi (9) et le fond (3) du cylindre est divisé en secteurs au moyen de cloisons (13) et chaque secteur est mis en communication régulièrement avec l'orifice (21) de la bague (11). <IMAGE>

IPC 1-7 (main, further and additional classification)

D21F 5/10

IPC 8 full level (invention and additional information)

D21F 5/10 (2006.01)

CPC (invention and additional information)

D21F 5/10 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0971070 A1 20000112; FR 2780991 A1 20000114; FR 2780991 B1 20000922

INPADOC legal status


2001-04-25 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20000713

2000-09-27 [AKX] PAYMENT OF DESIGNATION FEES

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-01-12 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI