EP 1059381 A1 20001213 - Rotor for a pulper
Title (en)
Rotor for a pulper
Title (de)
Rotor für eine Papierstoffaufbereitungsmaschine
Title (fr)
Rotor pour un pulpeur
Publication
Application
Priority
EP 99111193 A 19990609
Abstract (en)
The rotor (1), for the preparation of a paper pulp suspension, has a fitted wear protection cover (5), with a base body and at least one wear-protection working surface (7) and a rear surface, welded to the rotor blade (3). The wear-protection working surface (7) is formed by welding a wear-protection material before the base body is welded to the rotor blade (3). At least the initial section of the leading rotor blade surface (4), at the blade tip, is wholly shrouded by the protective cover (5). The fitted wear protection cover (5) at the rotor blade (3) projects over the side of the rotor blade (3) towards the base of the pulp container, over the leading surface (4) of the blade (3). The end side of the protective cover (5), at the side of the rotor blade (3) towards the pulp container wall, lies at an angle of 1-45 degrees , and is chamfered so that the radial gap between the end side and the rotary axis of the rotor increases towards the container wall. The leading blade surface (4) has the shape of a cylindrical or conical ring segment. The base of the protective shrouding has the shape of a cylindrical or conical ring segment. The protective working surface (7) has at least one leading edge, extending forwards in the direction of rotor (1) rotation. The leading edge has a curvature radius of max. 2 mm.
Abstract (de)
Der Rotor (1) ist zum Einsatz in einer Papierstoffaufbereitungsmaschine, z.B. Stofflöser, bestimmt, insbesondere um die darin enthaltene Papierstoffsuspension umzuwälzen. Dabei kann auch eine weitere Zerkleinerung des suspendierten Papiers bezweckt werden. Der Rotor ist mit Rotorflügeln (3) ausgestattet, welche jeweils mit mindestens einem Verschleißschutzelement (5) versehen sind. Ein solches Verschleißschutzelement (5) besteht aus einem Grundkörper mit einer verschleißgeschützten Arbeitsfläche (7) und ist an den Rotorflügel (3) angeschweißt. <IMAGE>
IPC 1-7
IPC 8 full level
D21B 1/34 (2006.01)
CPC (source: EP US)
D21B 1/347 (2013.01 - EP US)
Citation (search report)
- [X] DE 19649764 A1 19970612 - ASK HIGH TECHNOLOGY TECH ENTWI [DE]
- [X] WO 9849389 A1 19981105 - CELLWOOD MACHINERY AB [SE], et al
- [A] BE 1010118 A3 19980106 - MAGOTTEAUX INT [BE]
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 1059381 A1 20001213; EP 1059381 B1 20040421; CA 2311018 A1 20001209; DE 10016560 A1 20001214; DE 59909240 D1 20040527; US 6705554 B1 20040316
DOCDB simple family (application)
EP 99111193 A 19990609; CA 2311018 A 20000608; DE 10016560 A 20000403; DE 59909240 T 19990609; US 57757000 A 20000525