EP 1679403 A1 20060712 - Pulper for comminuting and suspending papermaking material
Title (en)
Pulper for comminuting and suspending papermaking material
Title (de)
Stofflöser zur Zerkleinerung und Suspendierung von Papierstoff
Title (fr)
Pulpeur pour désintégrer et mettre en suspension des matériaux pour pâte à papier
Publication
Application
Priority
DE 202005000332 U 20050111
Abstract (en)
The sieve screen (3) has openings (5) with shapes other than circular. The openings are: oval, especially elliptical. They are alternatively slots and/or wavy. The sieve is rotationally-symmetrical. The length (L) of each sieve opening relative to the radius (6) running through the sieve center includes an angle between -80[deg] and +80[deg], preferably between -45[deg] and +45[deg]. The leading edge (10) of the rotor blade runs at an acute angle relative to the length of the sieve openings. This angle is preferably between -45[deg] and +45[deg]. The sieve opening length-to-width ratio is preferably at least 3. Maximum opening width (B) is 4-20 mm. Maximum length (L) is 10-100 mm. The openings are milled, stamped, produced by laser, or by steel-casting. The sieve is a combination of a sieve plate (11) with openings, and a support plate (12). The support plate is a frame- or coarse sieve construction. Its outer contours correspond with those of the plate; its openings are larger than those of the sieve.
IPC 8 full level
D21B 1/34 (2006.01); D21D 5/04 (2006.01); D21D 5/16 (2006.01)
CPC (source: EP)
D21B 1/345 (2013.01); D21D 5/04 (2013.01); D21D 5/16 (2013.01)
Citation (search report)
- [Y] EP 1357222 A1 20031029 - VOITH PAPER PATENT GMBH [DE]
- [Y] EP 1398410 A1 20040317 - KADANT LAMORT [FR]
- [Y] DE 10138860 A1 20030227 - VOITH PAPER PATENT GMBH [DE]
- [Y] FR 1047321 A 19531214
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1679403 A1 20060712; EP 1679403 B1 20080305; AT E388266 T1 20080315; DE 202005000332 U1 20050317; DE 502005003085 D1 20080417; ES 2300923 T3 20080616
DOCDB simple family (application)
EP 05023603 A 20051028; AT 05023603 T 20051028; DE 202005000332 U 20050111; DE 502005003085 T 20051028; ES 05023603 T 20051028