Global Patent Index - EP 0953677 A3

EP 0953677 A3 2000-02-23 - Apparatus for removing rotating flows

Title (en)

Apparatus for removing rotating flows

Title (de)

Drallbrecher

Title (fr)

Dispositif pour éliminer des courants tourbillonaires

Publication

EP 0953677 A3 (DE)

Application

EP 99104323 A

Priority

DE 19819330 A

Abstract (en)

[origin: EP0953677A2] The pipe (2) to carry a fiber suspension along a main flow direction, has a swirl breaker (1) to reduce or eliminate rotary suspension flows round the main flow line. The swirl breaker has at least one plane (3) with a finite thickness, parallel to the main flow line, thicker than the length of the longest fibers in the suspension and pref. twice their length to give a thickness of 5 mm and pref. 8 mm. The plane is a flat plate or a plastics unit, connected to the pipe walls (7) at two opposite sides or at only one side. A number of planes can be used, intersecting at 90 degrees or 120 degrees . A gap between the side of a plane, and the nearest wall, is at least twice the mean fiber length in the suspension and max. two-thirds the pipe dia. At the bond with the pipe wall, the plane has a curvature matching the pipe shape and passing smoothly into it. The plane is at the pipe wall on both sides at an angle of significantly less than 90 degrees for the transit into the pipe wall curvature. The plane is thickened at the pipe wall and is bonded to the pipe wall without a gap by clamping and/or welding and/or an adhesive.

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

D21F 1/06

IPC 8 full level (invention and additional information)

D21F 1/02 (2006.01); D21F 1/06 (2006.01)

CPC (invention and additional information)

D21F 1/024 (2013.01); D21F 1/02 (2013.01); D21F 1/065 (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 0953677 A2 19991103; EP 0953677 A3 20000223; DE 19819330 A1 19991104

INPADOC legal status


2000-08-23 [18W] WITHDRAWN

- Date of withdrawal: 20000701

2000-02-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

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

2000-02-23 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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

1999-11-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

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

1999-11-03 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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