EP 0117716 A3 19850529 - APPARATUS FOR PULPING PAPER, AND A ROTOR THEREFOR
Title (en)
APPARATUS FOR PULPING PAPER, AND A ROTOR THEREFOR
Publication
Application
Priority
US 47084783 A 19830228
Abstract (en)
[origin: EP0117716A2] An apparatus for pulping paper making stock at high consistencies includes a rotor (28) having a rotor body (30), a plurality of vanes (36, 38) extending generally radially outwardly therefrom and a feed screw (40) mounted centrally of the rotor body and extending upwardly therefrom along an axis of rotation of the rotor body. The feed screw includes a conical body (42) having a base (46) with a periphery adjacent root portions (48) of the rotor vanes (38), and at least one helical flight (50, 52) extending along the length of the conical body and, in one embodiment, has a tapered end (54) which is located adjacent a vane root. The rotor body (30) and feed screw (40) are mounted for rotation in a center portion of the bottom wall (14, 16) of a tub (10) for holding paper making stock such that, when the rotor (28) is rotated, the conical body (42) and helical screw (40) guide material contacting the feed screw downwardly and outwardly to contact the rotor vanes (36, 38) which impel the stock toward the side wall (12) of the tub with sufficient force to climb the wall.
IPC 1-7
IPC 8 full level
CPC (source: EP)
D21B 1/347 (2013.01)
Citation (search report)
- DE 2542065 A1 19770324 - BOLTON EMERSON
- GB 1176412 A 19700101 - BOLTON EMERSON [CH]
- US 3171606 A 19650302 - LOWRY WARREN M
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0117716 A2 19840905; EP 0117716 A3 19850529; EP 0117716 B1 19880907; BR 8400776 A 19841002; CA 1242346 A 19880927; DE 3473894 D1 19881013; ES 530083 A0 19850201; ES 8503050 A1 19850201; JP H055958 B2 19930125; JP S59199895 A 19841113
DOCDB simple family (application)
EP 84301139 A 19840222; BR 8400776 A 19840221; CA 448340 A 19840227; DE 3473894 T 19840222; ES 530083 A 19840227; JP 3721584 A 19840228