Patent · US Expired

Pulp grinder with liquid retention

US4456182A · kind A · utility

1Cited by

5References

5Claims

0Family size

Assignee

J.M. Voith GmbH · DE

Inventors

Richard Suttinger · Schongau, DE
Ernst Bottger · Herbrechtingen, DE
Hans-Otto Henrich · Heidenheim, DE
Theodor Bahr · Heidenheim, DE
Helmut Thumm · Heidenheim, DE

Key dates

Filing date	Dec 4, 1981
Grant date	Jun 26, 1984
Priority date	—
Expiry date	Dec 4, 2001

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21B1/24
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The invention concerns a pulp grinder in which feed devices force the wood against the grinder stone and in which there is an elevated level of water in the grinding zone. Sealing devices or plates extend between the walls of the wood-supply chutes or pusher chambers and the grinder stone to keep the water level high only in the grinding zone. The sealing plates are adjustable for controlling the liquid level in the grinding zone.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.